Exhibit 4.1



                           REVOLVING CREDIT AGREEMENT

                                   DATED AS OF

                                  June 26, 2002

                                      AMONG

                       UNITED STATES CELLULAR CORPORATION,
                                   as Borrower

                            THE LENDERS NAMED HEREIN,

                         TORONTO DOMINION (TEXAS), INC.,
                             as Administrative Agent

                      WACHOVIA BANK, NATIONAL ASSOCIATION,
                              as Syndication Agent

                                 CITIBANK, N.A.
                                       and
                       LASALLE BANK NATIONAL ASSOCIATION,
                           as Co-Documentation Agents


                                      with

           TD SECURITIES (USA) INC. and FIRST UNION SECURITIES, INC.,
                 acting under the tradename WACHOVIA SECURITIES,
                                 having acted as
                   Joint Lead Arrangers and Joint Bookrunners








                                TABLE OF CONTENTS


Section 1.  DEFINITIONS AND RULES OF INTERPRETATION............................1
   Section 1.1.  Definitions...................................................1
                 -----------
   Section 1.2.  Rules of Interpretation......................................17
                 -----------------------
Section 2.  THE REVOLVING CREDIT FACILITY.....................................18
   Section 2.1.  Commitment to Lend...........................................18
                 ------------------
   Section 2.2.  Facility Fee.................................................18
                 ------------
   Section 2.3.  Reduction of Commitment......................................18
                 -----------------------
   Section 2.4.  The Notes for the Loans......................................19
                 -----------------------
   Section 2.5.  Notice and Matter of Borrowing or Conversion of Loans;
                 ------------------------------------------------------
                 Swing Line...................................................19
                 ----------
   Section 2.6.  Funds for Loans..............................................20
                 ---------------
   Section 2.7.  Mandatory Repayments of Loans................................21
                 -----------------------------
   Section 2.8.  Optional Repayments of Loans.................................22
                 ----------------------------
   Section 2.9.  Settlements..................................................22
                 -----------
Section 3.  LETTERS OF CREDIT.................................................23
   Section 3.1.   Letter of Credit Commitments................................23
                  ----------------------------
   Section 3.2.  Reimbursement Obligations of the Borrower....................24
                 -----------------------------------------
   Section 3.3.  Letter of Credit Payments....................................25
                 -------------------------
   Section 3.4.  Obligations Absolute.........................................25
                 --------------------
   Section 3.5.  Reliance by Issuer...........................................26
                 ------------------
   Section 3.6.  Letter of Credit Fee.........................................26
                 --------------------
Section 4.  INTEREST; CERTAIN GENERAL PROVISIONS..............................27
   Section 4.1.  Interest on Loans; Payments of Interest......................27
                 ---------------------------------------
   Section 4.2.  Interest Period Options......................................27
                 -----------------------
   Section 4.3.  Indemnity....................................................27
                 ---------
   Section 4.4.  Funds for Payments...........................................28
                 ------------------
   Section 4.5.  Computations.................................................29
                 ------------
   Section 4.6.  Inability to Determine Eurodollar Rate.......................29
                 --------------------------------------
   Section 4.7.  Illegality...................................................29
                 ----------
   Section 4.8.  Additional Costs, Etc........................................30
                 ---------------------
   Section 4.9.  Certificate..................................................31
                 -----------
   Section 4.10.  Capital Adequacy............................................31
                  ----------------
   Section 4.11.  Interest on Overdue Amounts.................................32
                  ---------------------------
   Section 4.12.  Payment Date Adjustment for Non-Business Days...............32
                  ---------------------------------------------
Section 5.  REPRESENTATIONS AND WARRANTIES....................................32
   Section 5.1.  Corporate Authority..........................................32
                 -------------------
   Section 5.2.  Governmental Approvals.......................................33
                 ----------------------
   Section 5.3.  Title to Properties; Leases..................................33
                 ---------------------------
   Section 5.4.  Financial Statements.........................................33
                 --------------------
   Section 5.5.  No Material Changes, Etc.....................................34
                 ------------------------
   Section 5.6.  Franchises, Patents, Copyrights, Etc.........................34
                 ------------------------------------
   Section 5.7.  No Litigation................................................34
                 -------------
   Section 5.8.  No Materially Adverse Contracts, Etc.........................34
                 ------------------------------------
   Section 5.9.  Compliance With Other Instruments, Laws, Etc.................35
                 --------------------------------------------
   Section 5.10.  Tax Status..................................................35
                  ----------
   Section 5.11.  No Event of Default.........................................35
                  -------------------
   Section 5.12.  Holding Company and Investment Company Acts.................35
                  -------------------------------------------
   Section 5.13.  Certain Transactions........................................35
                  --------------------
   Section 5.14.  ERISA Compliance............................................36
                  ----- ----------
   Section 5.15.  Purpose Credit..............................................36
                  --------------
   Section 5.16.  Environmental Compliance....................................37
                  ------------------------
   Section 5.17.  Compliance With Fair Labor Standards Act....................37
                  ----------------------------------------
   Section 5.18.  Subsidiaries................................................37
                  ------------

                                      -ii-

   Section 5.19.  Solvency....................................................38
                  --------
   Section 5.20.  Transactions with Affiliates................................38
                  ----------------------------
   Section 5.21.  Disclosure..................................................38
                  ----------
Section 6.  AFFIRMATIVE COVENANTS OF THE BORROWER.............................38
   Section 6.1.  Punctual Payment.............................................38
                 ----------------
   Section 6.2.  Maintenance of Office........................................38
                 ---------------------
   Section 6.3.  Records and Accounts.........................................39
                 --------------------
   Section 6.4.  Financial Statements, Certificates and Information...........39
                 --------------------------------------------------
   Section 6.5.  Corporate Existence; Maintenance of Properties...............40
                 ----------------------------------------------
   Section 6.6.  Insurance....................................................40
                 ---------
   Section 6.7.  Taxes; Etc...................................................41
                 ----------
   Section 6.8.  Inspection of Properties and Books...........................41
                 ----------------------------------
   Section 6.9.  Compliance with Laws, Contracts, Licenses, and Permits.......41
                 ------------------------------------------------------
   Section 6.10.  Pension Plans...............................................42
                  -------------
   Section 6.11.  Further Assurances..........................................42
                  ------------------
   Section 6.12.  Notices.....................................................42
                  -------
   Section 6.13.  Fair Labor Standards Act....................................42
                  ------------------------
   Section 6.14.  Environmental Events........................................43
                  --------------------
   Section 6.15.  Notification of Claims......................................43
                  ----------------------
   Section 6.16.  Use of Proceeds.............................................43
                  ---------------
   Section 6.17.  Notice of Litigation, Judgment and Material Events..........43
                  --------------------------------------------------
   Section 6.18.  Obligations to Parent Affiliated Companies..................44
                  ------------------------------------------
   Section 6.19.  Certain Documents...........................................44
                  -----------------
Section 7.  CERTAIN NEGATIVE COVENANTS OF THE BORROWER........................44
   Section 7.1.  Funded Debt..................................................44
                 -----------
   Section 7.2.  Restrictions on Liens........................................45
                 ---------------------
   Section 7.3.  Limitation on Sales, Consolidation, Merger, Etc..............47
                 -----------------------------------------------
   Section 7.4.  Federal Regulations..........................................48
                 -------------------
   Section 7.5.  Restrictions on Ability to Repay Loans.......................48
                 --------------------------------------
   Section 7.6.  Employee Benefit Plans.......................................48
                 ----------------------
   Section 7.7.  Compliance with Environmental Laws...........................48
                 ----------------------------------
   Section 7.8.  Limitation on Sale and Leaseback.............................49
                 --------------------------------
   Section 7.9.  Certain Funded Debt..........................................50
                 -------------------
   Section 7.10. Proceeds of Initial Loan.....................................50
                 ------------------------
Section 8.  FINANCIAL COVENANTS OF THE BORROWER...............................51
   Section 8.1.  Funded Debt to Capitalization Ratio..........................51
                 -----------------------------------
   Section 8.2.  Interest Coverage Ratio......................................51
                 -----------------------
   Section 8.3.  Funded Debt to EBITDA Ratio..................................52
                 ---------------------------
Section 9.  CLOSING CONDITIONS................................................52
   Section 9.1.  Corporate Action.............................................52
                 ----------------
   Section 9.2.  Loan Documents...............................................52
                 --------------
   Section 9.3.  Opinion of Borrower's Legal Counsel..........................52
                 -----------------------------------
   Section 9.4.  Certified Copies of Charter Documents........................52
                 -------------------------------------
   Section 9.5.  Incumbency Certificate.......................................52
                 ----------------------
   Section 9.6.  Good Standing Certificates...................................52
                 --------------------------
   Section 9.7.  Payment of Fees..............................................52
                 ---------------
   Section 9.8.  Receipt of Financial Statements..............................53
                 -------------------------------
   Section 9.9.  Financial Arrangements.......................................53
                 ----------------------
   Section 9.10.  C20 Acquisition.............................................53
                  ---------------
Section 10.  CONDITIONS TO ALL BORROWINGS.....................................54
   Section 10.1.  Representations True; No Event of Default...................54
                  -----------------------------------------
   Section 10.2.  No Legal Impediment.........................................54
                  -------------------
   Section 10.3.  Governmental Regulation.....................................54
                  -----------------------
   Section 10.4.  Proceedings and Documents...................................54
                  -------------------------
   Section 10.5.  No Material Adverse Change..................................54
                  --------------------------
Section 11.  EVENTS OF DEFAULT; ACCELERATION..................................54


                                     -iii-
Section 12.  THE AGENTS.......................................................56
   Section 12.1.  Authorization...............................................56
                  -------------
   Section 12.2.  Employees and Agents........................................57
                  --------------------
   Section 12.3.  No Liability................................................57
                  ------------
   Section 12.4.  No Representations..........................................57
                  ------------------
   Section 12.5.  Payments....................................................58
                  --------
   Section 12.6.  Holders of Notes............................................58
                  ----------------
   Section 12.7.  Indemnity...................................................58
                  ---------
   Section 12.8.  Agents as Lenders...........................................59
                  -----------------
   Section 12.9.  Resignation.................................................59
                  -----------
   Section 12.10.  Subordination Agreement....................................59
                   -----------------------
   Section 12.11.  Syndication Agent; Documentation Agents and Arrangers......59
                   -----------------------------------------------------
Section 13.  EXPENSES.........................................................59
             --------
Section 14.  INDEMNIFICATION..................................................60
             ---------------
Section 15.  ADJUSTMENTS; SETOFF..............................................61
Section 16.  SURVIVAL OF COVENANTS, ETC.......................................61
Section 17.  ASSIGNMENT AND PARTICIPATION.....................................62
   Section 17.1.  Conditions to Assignment by Lenders.........................62
                  -----------------------------------
   Section 17.2.  Certain Representations and Warranties; Limitations;
                  ----------------------------------------------------
                  Covenants...................................................62
                  ---------
   Section 17.3.  Register....................................................63
                  --------
   Section 17.4.  New Notes...................................................63
                  ---------
   Section 17.5.  Participations..............................................64
                  --------------
   Section 17.6.  Disclosure..................................................64
                  ----------
   Section 17.7.  Assignee or Participant Affiliated with the Borrower........64
                  ----------------------------------------------------
   Section 17.8.  Miscellaneous Assignment Provisions.........................64
                  -----------------------------------
   Section 17.9.  Assignment by Borrower......................................65
                  ----------------------
   Section 17.10.  Increase in Total Commitment...............................65
                   ----------------------------
Section 18.  NOTICES, ETC.....................................................67
Section 19.  GOVERNING LAW....................................................68
Section 20.  HEADINGS.........................................................68
             --------
Section 21.  COUNTERPARTS.....................................................68
             ------------
Section 22.  ENTIRE AGREEMENT, ETC............................................68
Section 23.  WAIVER OF JURY TRIAL.............................................68
Section 24.  CONSENTS, AMENDMENTS, WAIVERS, ETC...............................68
Section 25.  FCC APPROVAL.....................................................69
Section 26.  SEVERABILITY.....................................................70
             ------------
Section 27.  CONFIDENTIALITY..................................................70
             ---------------




                                      -iv-

                             SCHEDULES AND EXHIBITS

EXHIBIT A                                  Form of Note
EXHIBIT B                                  Form of Loan Request
EXHIBIT C                                  Form of Compliance Certificate
EXHIBIT D                                  Form of Opinion of Borrower's Counsel
EXHIBIT E                                  Form of Assignment and Acceptance
EXHIBIT F                                  Form of Subordination Agreement

SCHEDULE 1.1(a)                            Commitments
SCHEDULE 1.1(b)                            Eurodollar Lending Offices
SCHEDULE 1.2                               Pricing Grid
SCHEDULE 2                                 Disclosure Schedule











                           REVOLVING CREDIT AGREEMENT


     This REVOLVING  CREDIT AGREEMENT is made as of the 26 day of June, 2002, by
and among  UNITED  STATES  CELLULAR  CORPORATION  (the  "Borrower"),  a Delaware
corporation  having  its  principal  place of  business  at 8410  West Bryn Mawr
Avenue, Suite 700, Chicago, Illinois 60631, the financial institutions listed on
Schedule  1.1(a) hereto (the  "Lenders"),  TORONTO  DOMINION  (TEXAS),  INC., as
administrative  agent for the Lenders  (the  "Administrative  Agent"),  WACHOVIA
BANK,  NATIONAL   ASSOCIATION,   as  syndication  agent  for  the  Lenders  (the
"Syndication Agent"),  CITIBANK, N.A. and LASALLE BANK NATIONAL ASSOCIATION,  as
co-documentation  agents for the Lenders (the "Documentation  Agents"),  with TD
SECURITIES  (USA)  INC.  and FIRST  UNION  SECURITIES,  INC.,  acting  under the
tradename  WACHOVIA  SECURITIES  having acted as joint lead  arrangers and joint
bookrunners (the "Arrangers").

         Section 1.  DEFINITIONS AND RULES OF INTERPRETATION.
                     ----------------------------------------

         Section 1.1.  Definitions.  The following terms shall have the meanings
                       ------------
set forth in this  Section  1 or  elsewhere  in the  provisions  of this  Credit
Agreement referred to below:

         Acceding Lender.  See Section 17.10(a)
         ---------------

         Administrative  Agent.  Toronto  Dominion  (Texas),  Inc.,  not  in its
         ----------------------
individual capacity, but acting as administrative agent for the Lenders.

         Administrative Agent's Fee Letter. The letter agreement dated April 26,
         ----------------------------------
2002 among the Administrative Agent, TD Texas and the Borrower.

         Administrative Agent's Office.  See Section 4.4.
         -----------------------------

         Administrative  Agent's  Special  Counsel.  Bingham Dana LLP of Boston,
         ------------------------------------------
Massachusetts,  or such other  counsel as may be approved by the  Administrative
Agent.

         Affiliate.  Any Person that would be  considered  to be an affiliate of
         ----------
the  Borrower or, as the case may be, the Parent  Company,  under Rule 144(a) of
the Rules and  Regulations  of the  Securities  and Exchange  Commission,  as in
effect on the date  hereof,  if the  Borrower or, as the case may be, the Parent
Company, were issuing securities.

         Agents.  Collectively,  the Administrative Agent, the Syndication Agent
         -------
and the Documentation Agents.

         Agents' Fee Letter. The letter agreement dated April 26, 2002 among the
         -------------------
Administrative  Agent,  the  Syndication  Agent,  TD  Texas,  Wachovia  and  the
Borrower.

                                      -2-

         Anticipated  Reinvestment  Amount.  With  respect  to any  Reinvestment
         ----------------------------------
Election,  the amount  specified  in the  Reinvestment  Notice  delivered by the
Borrower  in  connection  therewith  as the  aggregate  amount  of the Net  Cash
Proceeds from the related  Reinvestment  Event that the Borrower intends to use,
or (as the case may be) intends to cause one or more of its Subsidiaries to use,
to purchase, construct or otherwise acquire Reinvestment Assets.

         Asset Sale. Any direct or indirect Transfer  (including any Transfer of
         -----------
all or any part of any  Subsidiary  of the  Borrower  by or through the issue or
Transfer of any Equity  Interests of such  Subsidiary,  and also  including  any
Transfer  pursuant  to a Sale and  Leaseback  Transaction),  whether in a single
transaction or in a series of related transactions, by the Borrower or by any of
its  Subsidiaries of any businesses or property of the Borrower or of any of its
Subsidiaries,  whether now owned or from time to time hereafter created, arising
or acquired, including Equity Interests; provided, however, that the term "Asset
Sale" shall not include any Transfer  made to the Borrower or any  Subsidiary of
the Borrower.

         Assignment and Acceptance.  See Section 17.1.
         -------------------------

         Balance Sheet Date.  December 31, 2001.
         ------------------

         Base Rate.  The greater of: (a) the variable per annum rate of interest
         ----------
so designated from time to time by the Administrative Agent at its office in New
York, New York as its "base rate" minus .50% (i.e., 50 Basis Points), or (b) the
Federal  Funds Rate plus .75%  (i.e.,  75 Basis  Points).  The "base  rate" is a
reference rate and does not necessarily  represent the lowest or best rate being
charged to any customer.  Changes in the rate of interest resulting from changes
in the "base  rate" or the  Federal  Funds Rate  shall  take  place  immediately
without notice or demand of any kind.

         Base Rate Loan.  Any Loan bearing  interest  determined by reference to
         ---------------
the Base Rate.

         Basis Points.  One one-hundredth of one percent (0.01%).
         ------------

         Borrower.  United States Cellular Corporation, a Delaware corporation.
         --------

         Business  Day. Any day other than  Saturday or Sunday on which  banking
         --------------
institutions  in  Houston,  Texas  and New  York,  New  York  are  open  for the
transaction of banking  business and, in addition,  if Eurodollar Rate Loans are
involved,  a day  which is also a day in  which  commercial  banks  are open for
international business (including dealings in Dollar deposits) in London or such
other Eurodollar Interbank Market as may be selected by the Administrative Agent
in its sole discretion acting in good faith.

         Buying Lender.  See Section 17.10(b).
         -------------

         C20.  Chicago 20MHz, LLC, a Delaware limited liability company.
         ---

         C20 Acquisition. The acquisition by the Borrower of one hundred percent
         ----------------
(100%) of the outstanding membership interests in C20 and certain related
assets, including personal communication service licenses and related wireless
system assets for the Chicago metropolitan trading area.

                                      -3-

         C20  Acquisition  Closing Date.  The first date on which the conditions
         -------------------------------
set  forth  in the  C20  Purchase  Agreement  have  been  satisfied  and the C20
Acquisition has occurred.

         C20 Acquisition Documents. Collectively, the C20 Purchase Agreement and
         --------------------------
all material  agreements and documents  required to be entered into or delivered
pursuant thereto or in connection with the C20 Acquisition.

         C20 Purchase  Agreement.  The Purchase and Sale Agreement,  dated as of
         ------------------------
May 9, 2002, entered into by and between PrimeCo Wireless Communications LLC and
the Borrower, together with all schedules, exhibits and annexes thereto.

         Capital Assets.  Fixed assets, both tangible (such as land,  buildings,
         ---------------
fixtures,  machinery and equipment) and intangible (such as patents, copyrights,
trademarks,  franchises  and good will);  provided that Capital Assets shall not
include any item  customarily  charged directly to expense or depreciated over a
useful life of twelve (12) months or less in accordance with Generally  Accepted
Accounting Principles.

         Capital  Stock.  (a) In the  case  of any  corporation,  any  corporate
         ---------------
capital  stock of any class or  series,  (b) in the case of any  association  or
business  entity,  any  shares,  interests,  participations,   rights  or  other
equivalents  (howsoever  designated) of corporate  capital stock, and (c) in the
case of any partnership or limited liability company,  partnership or membership
interests (whether general or limited).

         Capitalized  Lease. As applied to any Person,  any lease of property by
         -------------------
such Person as lessee or obligor,  the discounted  future rental  payments under
which are  required to be  capitalized  on the  balance  sheet of such Person in
accordance with Generally Accepted Accounting Principles.

         Capitalized  Rent.  The present value  (discounted  semi-annually  at a
         ------------------
discount  rate  equal to the  weighted  average  rate of  interest  borne by the
Obligations)  of the total net amount of rent payable for the remaining  term of
any lease of property by the Borrower (including any period for which such lease
has been extended);  provided that no such rental  obligation shall be deemed to
be  Capitalized  Rent  unless  the  lease  resulted  from a Sale  and  Leaseback
Transaction. The total net amount of rent payable under any lease for any period
shall be the total amount of the rent payable by the lessee with respect to such
period  but  shall  not  include  amounts  required  to be  paid on  account  of
maintenance and repairs, insurance, taxes, assessments, water rates, sewer rates
and similar charges.

         Cash  Collateralize.  To pledge  and  deposit  with or  deliver  to the
         --------------------
Administrative  Agent,  for  the  benefit  of the  Agents  and the  Lenders,  as
collateral for the Reimbursement  Obligations,  cash or deposit account balances
pursuant to documentation in form and substance  reasonably  satisfactory to the
Administrative  Agent.   Derivatives  of  such  term  shall  have  corresponding
meanings.

         Change in Control. Any event or series of related events (including (1)
         ------------------
the sale or issuance (or series of sales or  issuances)  of Equity  Interests of
the Borrower by the Borrower or

                                      -4-

by any holder or holders  thereof,  (2) the sale or issuance (or series of sales
or issuances) of Equity Interests of the Parent Company by the Parent Company or
by  any  holder  or  holders   thereof,   or  (3)  any  merger,   consolidation,
recapitalization,  reorganization  or other  transaction  or  arrangement)  as a
result of which:  (a) the Parent  Company shall cease to own more than fifty-one
percent  (51%) of the total  number of  shares  of common  Capital  Stock of the
Borrower from time to time issued and outstanding;  (b) the Parent Company shall
cease to be a  "beneficial  owner" (as defined in Rule 13d-3 under the  Exchange
Act) of voting  interests in the Borrower  having the voting power,  by class or
through a combined  total  voting  power of all classes of Capital  Stock of the
Borrower,  to elect at least a majority of the members of the board of directors
of the  Borrower;  (c) the  Carlson  Family  Group  shall  together  cease to be
"beneficial  owners" (as defined in Rule 13d-3 under the Exchange Act) of voting
interests in the Parent Company  having the voting power,  by class or through a
combined  total  voting  power of all  classes  of  Capital  Stock of the Parent
Company,  to elect at least a majority of the members of the board of  directors
of the Parent Company; or (d) any "Change in Control" or any other similar event
under and as defined in any of the instruments  governing any Funded Debt of the
Borrower or the Parent Company or of any of their respective  Subsidiaries in an
aggregate  principal amount exceeding  $100,000,000 shall at any time occur. The
term "Carlson Family Group" shall mean any and all of the following persons: (i)
LeRoy T. Carlson or his spouse,  Margaret Carlson;  (ii) any child,  grandchild,
great  grandchild  or other lineal  descendant  of LeRoy T. Carlson and Margaret
Carlson,  including any person with such relationship by adoption, or the spouse
of any such person;  (iii) the estate of any of the persons described in clauses
(i) and (ii);  (iv) any trust or  similar  arrangement,  provided  that  persons
described in clauses (i),  (ii),  or (iii) own more than fifty  percent (50%) of
the  beneficial  interests  in such trust or  arrangement;  (v) the voting trust
which  expires on June 30, 2009,  as amended from time to time, or any successor
to such voting trust,  including the trustees of such voting trust; and (vi) any
corporation,  partnership,  limited  liability  company or other entity in which
persons  identified in clauses (i) through (v) own more than fifty percent (50%)
of the voting interests in the election of directors or other management of such
entity.

         Closing  Date.  The date upon which the  Borrower,  the Lenders and the
         --------------
Agents execute and deliver this Credit Agreement.


         Closing   Fees.   The   nonrefundable   closing  fees  payable  to  the
         ---------------
Administrative  Agent  on the  Closing  Date,  for the pro rata  account  of the
Lenders, in an aggregate amount specified in the Supplemental Fee Letter.

         Code. The Internal  Revenue Code of 1986, as amended and in effect from
         -----
time to time.

         Commitment.  With respect to each  Lender,  the amount set forth in the
         -----------
column  labeled  Commitment,  opposite  such  Lender's  name on Schedule  1.1(a)
hereto,  as the same may be reduced or increased,  in accordance  with the terms
hereof, from time to time.

         Commitment Increase Notice.  See Section 17.10(a)
         --------------------------

         Commitment  Percentage.  With respect to each Lender at any  particular
         -----------------------
time,  such  Lender's  Commitment  in effect at such time  divided  by the Total
Commitment in effect at such time, expressed as a percentage.

                                      -5-

         Compliance Certificate.  See Section 6.4(c).
         ----------------------

         Consolidated  or  consolidated.  With  reference  to any  term  defined
         -------------------------------
herein,  shall mean that term as applied to the accounts of the Borrower and all
of  its  Subsidiaries,   consolidated  in  accordance  with  Generally  Accepted
Accounting Principles.

         Consolidated Capitalization. The sum of (i) Funded Debt of the Borrower
         ----------------------------
and its Subsidiaries  calculated on a consolidated basis, plus (ii) Consolidated
Net Worth plus (iii) deferred taxes and deferred investment credit to the extent
deducted in calculating Consolidated Net Worth.

         Consolidated  EBITDA. For any period, an amount equal to the sum of (a)
         ---------------------
Consolidated Net Income for such period, plus (b) depreciation, amortization and
all other  non-cash  charges  deducted  from  Consolidated  Net  Income for such
period,  plus (c) to the extent deducted in the calculation of Consolidated  Net
Income, Consolidated Interest Expense and taxes paid or payable for such period.

         Consolidated  Interest Expense. For any period, the aggregate amount of
         -------------------------------
interest  required  to be paid or payable in cash by the  Borrower or any of its
Subsidiaries during such period on all Funded Debt of the Borrower or any of its
Subsidiaries  outstanding  during all or any part of such  period,  whether such
interest  was  or is  required  to  be  reflected  as  an  item  of  expense  or
capitalized, including payments consisting of interest in respect of Capitalized
Leases (including,  without  duplication,  the interest for rental payments made
with respect to Sale and Leaseback  Transactions) and including any Facility Fee
payable pursuant to Section 2.2.

         Consolidated Net Assets.  For any period,  the net book value of all of
         ------------------------
the property and assets of the Borrower  and its  Subsidiaries  determined  on a
consolidated basis.

         Consolidated Net Income. For any period, the net income of the Borrower
         ------------------------
and its  Subsidiaries for such period,  after deduction of all expenses,  taxes,
and other proper charges for such period,  determined on a consolidated basis in
accordance with Generally  Accepted  Accounting  Principles,  after  eliminating
therefrom (a) all extraordinary nonrecurring gains or losses, including, without
limitation,  any gains (or losses)  from any sales of assets other than sales in
the  ordinary  course  of  business,  and (b)  non-cash  dividends  or  non-cash
distributions  from  entities in which the  Borrower or any of its  Subsidiaries
holds a minority interest.

         Consolidated  Net Worth.  The excess of Consolidated  Total Assets over
         ------------------------
Consolidated Total Liabilities.

         Consolidated   Total  Assets.  All  assets  of  the  Borrower  and  its
         -----------------------------
Subsidiaries  determined on a  consolidated  basis in accordance  with Generally
Accepted Accounting Principles.

         Consolidated Total Liabilities. All liabilities of the Borrower and its
         -------------------------------
Subsidiaries  determined on a  consolidated  basis in accordance  with Generally
Accepted Accounting Principles (including all Funded Debt and other indebtedness
of the Borrower and its Subsidiaries).

                                      -6-

         Continuation   Request.   A  notice   given  by  the  Borrower  to  the
         -----------------------
Administrative  Agent in  accordance  with  Section  4.2  pursuant  to which the
Borrower  notifies the  Administrative  Agent of its election to continue a Loan
for a particular Interest Period.

         control.  See the definition of the term "Monetization Transaction".
         -------                                   ------------------------

         Credit  Agreement.  This  Revolving  Credit  Agreement,  including  the
         ------------------
Schedules and Exhibits hereto.

         Debt Rating. At the relevant time of reference thereto, the debt rating
         ------------
issued by S&P or Moody's with respect to unsecured  indebtedness of the Borrower
not maturing  within twelve months and not by its terms or pursuant to any other
contractual  arrangement  subordinated in right of payment to other indebtedness
of the Borrower.

         Default.  See Section 11.
         -------

         Delinquent Lender.  See Section 12.5(b)
         ---------- ------

         Disclosure Schedule.  Schedule 2 hereto,  prepared and completed by the
         --------------------
Borrower,  and  delivered  by the Borrower to the  Administrative  Agent and the
Lenders  in  connection  with  this  Credit  Agreement  and  identified  as  the
"Disclosure Schedule".

         Dollars.  Dollars in lawful currency of the United States of America.
         -------

         Domestic  Lending  Office.   Initially,   the  office  of  each  Lender
         --------------------------
designated as such in Schedule 1.1(a) hereto;  thereafter,  such other office of
such Lender,  if any,  located  within the United  States that will be making or
maintaining Base Rate Loans.

         Drawdown  Date.  The date on which any Loan is made or is to be made in
         ---------------
accordance with Section 2.

         Effective Commitment Amount.  See Section 17.10(a).
         ---------------------------

         Eligible  Assignee.  Any of (a) a  commercial  bank or finance  company
         -------------------
organized  under the laws of the  United  States,  or any State  thereof  or the
District of Columbia, and having total assets in excess of $1,000,000,000; (b) a
savings and loan  association  or savings bank  organized  under the laws of the
United  States,  or any State thereof or the District of Columbia,  and having a
net worth of at least  $1,000,000,000,  calculated in accordance  with generally
accepted accounting  principles;  (c) a commercial bank organized under the laws
of any  other  country  which  is a  member  of the  Organization  for  Economic
Cooperation and Development (the "OECD"), or a political subdivision of any such
country, and having total assets in excess of $1,000,000,000, provided that such
bank is acting  through a branch or agency located in the country in which it is
organized or another country which is also a member of the OECD; (d) the central
bank of any country which is a member of the OECD;  (e) an Affiliate of a Lender
and (f) if, but only if, an Event of Default has occurred and is continuing, any
other bank,  insurance  company,  commercial  finance company or other financial
institution  approved  by the  Administrative  Agent,  such  approval  not to be
unreasonably  withheld.  For purposes of this definition "Affiliate" means, with
respect to a specified Lender, another Person that directly, or


                                      -7-

indirectly through one or more  intermediaries,  Controls or is Controlled by or
is under common Control with the Lender specified.

         Environmental Laws.  See Section 5.16.
         ------------------

         Equity  Interests.  Capital  Stock and all  warrants,  options or other
         ------------------
rights to purchase or otherwise  acquire  Capital Stock (but  excluding any debt
securities that are convertible into, or exchangeable for, Capital Stock).

         ERISA. The Employee Retirement Income Security Act of 1974, as amended.
         ------

         ERISA Affiliate.  Any Person which is treated as a single employer with
         ----------------
the Borrower under Section 414 of the Code.

         ERISA Reportable Event. A reportable event with respect to a Guaranteed
         -----------------------
Pension  Plan  within the meaning of Section  4043 of ERISA and the  regulations
promulgated  thereunder  as to which  the  requirement  of  notice  has not been
waived.

         Eurocurrency  Reserve  Requirement.  For  any  day  with  respect  to a
         -----------------------------------
Eurodollar  Rate Loan,  the maximum rate  (expressed  as a decimal) at which any
lender subject thereto would be required to maintain reserves under Regulation D
of the Board of Governors  of the Federal  Reserve  System (or any  successor or
similar regulations relating to such reserve requirements) against "Eurocurrency
Liabilities"  (as that term is used in Regulation D), if such  liabilities  were
outstanding.   The   Eurocurrency   Reserve   Requirement   shall  be   adjusted
automatically  on and as of the effective date of any change in the Eurocurrency
Reserve Requirement.

         Eurodollar  Interbank  Market.  Any lawful  recognized  market in which
         ------------------------------
deposits of Dollars are offered by international  banking units of United States
banking  institutions  and by foreign banking  institutions to each other and in
which foreign currency and exchange  operations or eurodollar funding operations
are customarily conducted.

         Eurodollar  Lending  Office.  Initially,  the  office  of  each  Lender
         ----------------------------
designated as such on Schedule 1.1(b) hereto and, thereafter,  such other office
of such Lender,  if any,  that shall be making or  maintaining  Eurodollar  Rate
Loans.

         Eurodollar  Rate.  For any  Interest  Period,  the LIBOR rate per annum
         -----------------
equal to the  quotient  (rounded  upwards  to the  next  higher  1/100th  of one
percent)  of (a) (i) the rate per annum for  deposits  in  Dollars  for a period
comparable to such Interest Period which appears on the Telerate Page 3750 as of
11:00  a.m.,  London  time,  on the day that is two  Business  Days prior to the
beginning of such Interest Period,  or (ii) if such rate specified in clause (i)
does not appear on the Telerate Page 3750, the rate at which the  Administrative
Agent's  Eurodollar  Lending Office is offered Dollar deposits two Business Days
prior to the  beginning  of such  Interest  Period in the  eurodollar  interbank
market where the eurodollar and foreign currency and exchange operations of such
Eurodollar  Lending  Office are  customarily  conducted  at or about 11:00 a.m.,
Houston  time,  for  delivery on the first day of such  Interest  Period for the
number of days  comprised  therein and in an amount  comparable to the amount of
the Administrative  Agent's Loan to which such Interest Period applies,  divided
in either  case by (b) a number  equal to 1.00  minus the  Eurocurrency  Reserve
Requirement.

                                      -8-

         Eurodollar Rate Loans.  Loans bearing interest  calculated by reference
         ----------------------
to the Eurodollar Rate.

         Event of Default.  See Section 11.
         ----------------

         Excluded Sales.  Any of the following Asset Sales by the Borrower or by
         ---------------
any of its Subsidiaries:  (a) Transfers of assets made in the ordinary course of
business;  and (b) Asset  Sales to the extent that the  aggregate  amount of Net
Cash Proceeds  received by the Borrower and its Subsidiaries from all such Asset
Sales during the term of this Credit Agreement shall not exceed $250,000,000.

         FCC. The Federal  Communications  Commission (or any successor  agency,
         ----
commission,  bureau,  department or other  political  subdivision) of the United
States.

         FCC License. Any license, permit, certificate of compliance, franchise,
         ------------
approval or authorization granted or issued by the FCC.

         Facility Fee.  See Section 2.2.
         ------------

         Federal  Funds  Rate.  For any day,  the rate  per  annum  equal to the
         ---------------------
weighted  average of the rates on  overnight  federal  funds  transactions  with
members of the Federal  Reserve  System  arranged by federal funds  brokers,  as
published  for  such  day (or if such day is not a  Business  Day,  for the next
preceding  Business  Day) by the Federal  Reserve Bank of New York,  or, if such
rate is not so published  for any day that is a Business Day, the average of the
quotations  for such day on such  transactions  received  by the  Administrative
Agent  from  three  funds  brokers  of  recognized   standing  selected  by  the
Administrative Agent.

         Fee Letters.  Collectively,  the Agents' Fee Letter, the Administrative
         ------------
Agent's Fee Letter and the Supplemental Fee Letter.

         Financing  Event.  See  the  definition  of  the  term  "Net  Financing
         -----------------
Proceeds".

         Funded  Debt.  As to the  Borrower  and its  Subsidiaries  and  without
         -------------
duplication,  the  amount  (whether  such  obligations  are owing to any  Parent
Affiliated Company or to any other Person) of: (a) all indebtedness for borrowed
money; (b) all obligations  incurred as the deferred  purchase price of property
or services  (other than (i) trade payables  entered into in the ordinary course
of business  pursuant to ordinary terms, and (ii) ordinary course purchase price
adjustments);  (c) all reimbursement and other payment  obligations with respect
to letters of  credit,  bankers'  acceptances,  surety  bonds and other  similar
documents;  (d) all obligations evidenced by promissory notes, bonds, debentures
or other similar instruments, including all obligations so evidenced incurred in
connection with the acquisition of property or any business; (e) all Capitalized
Lease  obligations and all  indebtedness  created under any conditional  sale or
other  title  retention  agreements  or sales of  accounts  receivable;  (f) all
non-recourse indebtedness of the kind described in clause (a) through clause (e)
secured by liens on property of the obligor; and (g) all guaranty obligations in
respect of  indebtedness  of the kind described in clause (a) through clause (f)
above; excluding up to $25,000,000 in the aggregate of contingent liabilities of
the Borrower and its Subsidiaries  which are not required by Generally  Accepted
Accounting  Principles  to be disclosed on the balance sheet of the Borrower and
its Subsidiaries.  For all

                                      -9-

purposes of this Credit  Agreement,  the term "Funded  Debt" shall also include,
with respect to the Borrower and its  Subsidiaries,  the  contractual  and other
similar  obligations  of the Borrower and its  Subsidiaries  with respect to any
Monetization Transaction,  except as and to the extent that such contractual and
other  similar  obligations  are not  required  to be  treated  as funded  debt,
long-term debt or the like by Generally Accepted Accounting Principles.

         Funded Debt to Capitalization  Ratio. For any Measurement  Period,  the
         -------------------------------------
ratio of (a) Funded Debt of the Borrower and its  Subsidiaries  calculated  on a
consolidated   basis  on  the  last  day  of  such  Measurement  Period  to  (b)
Consolidated Capitalization on the last day of such Measurement Period.

         Funded Debt to EBITDA Ratio. For any Measurement  Period,  the ratio of
         ----------------------------
(a)  Funded  Debt  of  the  Borrower  and  its  Subsidiaries   calculated  on  a
consolidated   basis  on  the  last  day  of  such  Measurement  Period  to  (b)
Consolidated EBITDA for such Measurement Period.

         Generally Accepted Accounting  Principles.  Accounting  principles that
         ------------------------------------------
are  consistent  with the  principles  promulgated  or adopted by the  Financial
Accounting Standards Board and its predecessors in effect for the fiscal year of
the Borrower ended on the Balance Sheet Date, and to the extent  consistent with
such  principles,  the  accounting  practices of the  Borrower  reflected in its
financial statements for the year ended on the Balance Sheet Date; provided that
a  certified  public  accountant  would,  insofar as the use of such  accounting
principles  is  pertinent,  be in a position to deliver an  unqualified  opinion
(other than a qualification  regarding changes in generally accepted  accounting
principles)  as to  financial  statements  in which  such  principles  have been
properly applied.

         Guaranteed Pension Plan. Any pension plan maintained by the Borrower or
         ------------------------
any of its  Subsidiaries,  or to which the  Borrower or any of its  Subsidiaries
contributes,  that is required to pay plan termination insurance premiums to the
PBGC.

         Hazardous Substances.  See Section 5.16.
         --------------------

         Interest Coverage Ratio. For any Measurement  Period,  the ratio of (i)
         ------------------------
Consolidated  EBITDA for such Measurement  Period to (ii) Consolidated  Interest
Expense for such Measurement Period.

         Interest Payment Date. (a) As to any Eurodollar Rate Loan in respect of
         ----------------------
which the Interest Period is (i) 3 months or less, the last Business Day of such
Interest Period, and (ii) more than 3 months, the date that is 3 months from the
Drawdown Date thereof and the last Business Day of such Interest Period, and (b)
as to any Base Rate Loan, the last Business Day of each calendar quarter.

         Interest  Period.  With  respect  to each  Eurodollar  Rate  Loan,  (a)
         -----------------
initially, the period commencing on the date such Loan is made and ending on the
last day of a period of either seven (7) days,  if  available,  or 1, 2, 3, or 6
months as selected by the  Borrower in a Loan  Request for any  Eurodollar  Rate
Loan,  and  (b)  thereafter,  each  period  commencing  on the  last  day of the
immediately  preceding  Interest Period  applicable to such Eurodollar Rate Loan
and ending on the last day of one of the periods set forth above, as selected by
the Borrower in a Continuation

                                      -10-


Request;  provided  that all of the  foregoing  provisions  relating to Interest
Periods are subject to the following:

         (i) if any  Interest  Period with respect to any  Eurodollar  Rate Loan
would  otherwise end on a day that is not a Business  Day, that Interest  Period
shall be extended to the next succeeding  Business Day unless the result of such
extension would be to carry such Interest Period into another calendar month, in
which event such Interest Period shall end on the immediately preceding Business
Day;

         (ii) if the  Borrower  shall  fail to give a  Continuation  Request  as
provided in Section 4.2 with respect to any  Eurodollar  Rate Loan, the Borrower
shall be deemed to have requested that a seven (7) day Interest  Period apply to
such  Eurodollar  Rate  Loan  commencing  on the last  day of the  then  current
Interest Period with respect thereto;

         (iii) any  Interest  Period that begins on the last  Business  Day of a
calendar month (or on a day for which there is no numerically  corresponding day
in the calendar month at the end of such Interest  Period) shall end on the last
Business  Day of a calendar  month  unless such  Interest  Period is a seven day
Interest  Period;

         (iv) the Borrower  may not select an Interest  Period for any Loan that
would extend beyond the scheduled Maturity Date; and

         (v) at no time may the total number of Interest  Periods  applicable to
Eurodollar Rate Loans exceed ten (10).

         Investment.  In relation to any Person:
         ----------

         (a) any loan,  advance or other extension of credit made by such Person
to any other Person;

         (b) the creation of any guaranty or similar  obligation  of such Person
to support any of the Funded Debt of any other Person; or

         (c) any  capital  contribution  by such  Person to, or purchase by such
Person of any Equity  Interests  of, any other Person,  or any other  investment
evidencing  an ownership or other  similar  interest of such Person in any other
Person.

         Lenders.  The financial  institutions  listed on Schedule  1.1(a),  any
         --------                                         ----------------
Acceding Lender, and any of their successors and permitted assigns.

         Letter of Credit.  See Section 3.1(a).
         ----------------

         Letter of Credit Application.  See Section 3.1(a).
         ----------------------------

         Letter of Credit Fee.  See Section 3.6.
         --------------------

         Letter of Credit Participation.  See Section 3.1(d).
         ------------------------------


                                      -11-

         Lien. Any mortgage, deed of trust, pledge,  hypothecation,  assignment,
         -----
deposit arrangement,  encumbrance,  lien (statutory or other), security interest
or preference,  priority or other security agreement or preferential arrangement
of any kind or nature whatsoever, including, without limitation, any conditional
sale or other  title  retention  agreement,  the  interest  of a lessor  under a
Capitalized  Lease, any financing lease having  substantially  the same economic
effect as any of the foregoing and the filing of any financing  statement naming
the owner of the asset to which such Lien relates as debtor.

         Loan Documents.  This Credit Agreement, the Notes, the Letter of Credit
         ---------------
Applications,  the Letters of Credit,  the  Subordination  Agreement and the Fee
Letters.

         Loan Request.  See Section 2.5.
         ------------

         Loans. Collectively,  the loans advanced to the Borrower by the Lenders
         ------
pursuant to this Credit Agreement.

         Margin  Percentage.  At the  relevant  time of  reference  hereto,  the
         -------------------
applicable  rate per annum,  expressed in Basis  Points,  set forth in the table
attached  hereto as  Schedule  1.2 beneath  the column for the  applicable  Debt
Rating in the row labeled Margin Percentage,  as adjusted in accordance with the
paragraphs below such table.

         Material Adverse Change. Any event, development, change or circumstance
         ------------------------
that,  either  individually  or when taken  together  with any such other event,
change or the like, (a) materially  adversely  affects,  or could  reasonably be
expected to materially  adversely affect, the financial condition or business of
the Borrower and its  Subsidiaries,  taken as a whole, (b) materially  adversely
affects,  or could reasonably be expected to materially  adversely  affect,  the
ability of the Borrower to perform any of its payment or other obligations under
this Credit  Agreement  or any of the other Loan  Documents,  or (c)  materially
impairs,  or could reasonably be expected to materially  impair, the validity or
enforceability  of this Credit  Agreement or any of the other Loan  Documents or
any of the rights or remedies of the Agents or the Lenders thereunder.

         Material  Subsidiaries.  United States Cellular  Operating  Company,  a
         -----------------------
Delaware  corporation,  United States Cellular  Investment  Company,  a Delaware
corporation,  and any other  Subsidiary that is directly or indirectly  owned by
the  Borrower  and whose total assets  constitute  at least 10% of  Consolidated
Total Assets or whose gross  revenues  determined in accordance  with  Generally
Accepted Accounting Principles constitute at least 10% of the consolidated gross
revenues of the Borrower and its  Subsidiaries  calculated  in  accordance  with
Generally Accepted Accounting Principles.

         Maturity  Date.  June  26,  2007;  provided  that (a) in any  case,  if
         ---------------
earlier,  the  Maturity  Date  shall be deemed to occur on the date on which the
outstanding  Loans hereunder are declared or become due and payable  pursuant to
the terms of this Credit Agreement,  including, without limitation,  pursuant to
Section 11 hereof, or on which the Total Commitment is terminated and (b) in the
event that the C20  Acquisition  is not  completed  on or prior to November  30,
2002, the Maturity Date shall be December 1, 2002.

                                      -12-

         Maximum  Drawing  Amount.   The  maximum   aggregate  amount  that  the
         -------------------------
beneficiaries may at any time draw under outstanding  Letters of Credit, as such
aggregate  amount may be reduced from time to time  pursuant to the terms of the
Letters of Credit.

         Measurement  Period.  Any period of four consecutive fiscal quarters of
         --------------------
the  Borrower  ending on or after June 30, 2002 for which  financial  statements
have been delivered by the Borrower pursuant to Section 6.4.

         Monetization Transaction. With respect to any Equity Interests owned by
         -------------------------
any Parent  Affiliated  Company,  the  Borrower or any of its  Subsidiaries  (an
"Owner") in any Person or Persons that are not directly,  or indirectly  through
one  or  more  intermediaries,   controlled  by  the  Owners,  any  transaction,
agreement, device or arrangement which results in an Owner receiving payments on
account of entering into contractual or similar  obligations and granting rights
in, to or with respect to such Equity Interests.  The term "control" (including,
with correlative meanings, the terms "controlled by", "under common control" and
other terms of similar import) shall mean the possession, directly or indirectly
through one or more intermediaries, of the power to elect at least a majority of
the members of the board of directors or other  management of any Person whether
through the ownership of Voting Stock or otherwise.

         Moody's.  Moody's Investors Service, Inc.
         -------

         Multiemployer  Plan.  Any  multiemployer  plan  within  the  meaning of
         --------------------
Section 3(37) of ERISA  maintained or  contributed to by any of the Borrowers or
any ERISA Affiliate.

         Net Cash Proceeds. In connection with any Asset Sale, the cash proceeds
         ------------------
(including any cash payments  received by way of deferred  payment pursuant to a
promissory note, receivable or otherwise, but only as and when received in cash)
of such Asset Sale, net of (a) transaction  costs  (including any  underwriting,
brokerage or other selling  commissions  and legal,  advisory and other fees and
expenses, including title and recording expenses,  associated therewith, in each
case,  actually  incurred and  satisfactorily  documented),  (b)  required  debt
payments  (other than pursuant  hereto),  (c) taxes  reasonably  estimated to be
payable  as a result  of such  Asset  Sale,  and (d) any  portion  of such  cash
proceeds  which the  Borrower  determines  in good faith  should be reserved for
post-closing  adjustments or liabilities (to the extent the Borrower delivers to
the Administrative  Agent a certificate signed by its chief financial officer as
to such  determination),  it being  understood and agreed that on the day all of
such  post-closing  adjustments and liabilities  have been  determined,  (i) the
amount (if any) by which the reserved  amount of the cash proceeds of such Asset
Sale exceeds the actual  post-closing  adjustments or liabilities payable by the
Borrower or any of its  Subsidiaries  shall constitute Net Cash Proceeds on such
date, and (ii) the amount (if any) by which the actual post-closing  adjustments
or other liabilities payable by the Borrower or any of its Subsidiaries  exceeds
the reserved  amount of the cash  proceeds of such Asset Sale on such date shall
be credited against any subsequent Net Cash Proceeds that the Borrower or any of
its  Subsidiaries  are required to apply to prepay the Loans pursuant to Section
2.7(b).

         Net Financing Proceeds.  With respect to any Monetization  Transaction,
         -----------------------
an equity  rights  offering by the  Borrower or the  issuance or Transfer by the
Borrower, in each case, for the account of the Borrower, of any Equity Interests
of the  Borrower or of any Funded Debt of the  Borrower to any Person or Persons
other than the Borrower or any of its Subsidiaries  (each such

                                      -13-

transaction  being  herein  called a  "Financing  Event"):  (a) the  gross  cash
proceeds received in connection with such Financing Event, as and when received;
minus (b) all of the transaction costs (including legal,  investment banking and
other fees and  disbursements)  payable or incurred in  connection  therewith in
favor of any Person.

         Note Record.  The grid attached to a Note, or the  continuation of such
         -----------
grid, or any other  similar  record  maintained by the Lender  holding such Note
with respect to any Loan.

         Notes.  The  promissory  notes  issued  pursuant to Section 2.4 of this
         ------
Credit Agreement evidencing the Loans.

         Obligations.  All  indebtedness,  obligations  and  liabilities  of the
         ------------
Borrower and its  Subsidiaries  to the Lenders,  individually  or  collectively,
existing on the date of this Credit Agreement or arising  thereafter,  direct or
indirect,  joint or  several,  absolute  or  contingent,  matured or  unmatured,
liquidated or unliquidated, secured or unsecured, arising by contract, operation
of law or otherwise,  arising or incurred under this Credit  Agreement or any of
the other  Loan  Documents  or in  respect  of the Loans  made or  Reimbursement
Obligations incurred or any of the Notes, Letter of Credit Applications, Letters
of Credit or other instruments at any time evidencing any thereof.

         Outstanding or  outstanding.  With respect to the Loans,  the aggregate
         ----------------------------
unpaid principal thereof as of any date of determination.

         PBGC. The Pension Benefit Guaranty  Corporation created by Section 4002
         -----
of ERISA and any successor entity or entities having similar responsibilities.

         Parent Affiliated Companies.  Collectively, (a) the Parent Company, and
         ----------------------------
b) all  Subsidiaries  and  Affiliates  of the  Parent  Company,  other than the
Borrower and the Borrower's Subsidiaries.

         Parent   Company.   Telephone  and  Data  Systems,   Inc.,  a  Delaware
         -----------------
corporation.

         Person.  Any individual,  corporation,  partnership,  limited liability
         -------
company, trust, unincorporated association, business, or other legal entity, and
any government or any governmental agency or political subdivision thereof.

         Pro Forma.  With respect to  preparation  of any  financial  statement,
         ----------
preparation  of  such  financial  statement  after  giving  effect  to  the  C20
Acquisition and the incurrence of Funded Debt in connection therewith using, for
purposes of preparing such  financial  statements,  the most recently  available
quarterly  historical financial statements of all entities or assets so acquired
or to be acquired and the consolidated  financial statements of the Borrower and
its  Subsidiaries  which shall be reformulated (a) as if the C20 Acquisition and
the incurrence of Funded Debt in connection  therewith and any other such action
to be  consummated  in  connection  therewith,  and any  Funded  Debt  or  other
liabilities  incurred in connection with any such actions,  had been consummated
as of the first day of such  period  (and  assuming  that such Funded Debt bears
interest  during any  portion of the  applicable  period  prior to the  relevant
action at the weighted  average of the interest rates  applicable to outstanding
Loans during such period),  and (b) otherwise in conformity with such reasonable
procedures as may be agreed upon between the

                                      -14-

Agents  and  the  Borrower;  provided,  however,  that  all of the  calculations
referred  to  herein  shall be in  reasonable  detail  and  shall be in form and
substance reasonably satisfactory to the Agents in all material respects.

         Proprietary Rights.  See Section 5.6.
         ------------------

         Real  Estate.  All real  property  at any time  owned or  leased by the
         -------------
Borrower or any of its Subsidiaries.

         Register.  See Section 17.3.
         --------

         Reimbursement  Obligation.  The Borrower's  obligation to reimburse the
         --------------------------
Administrative  Agent and the Lenders on account of any drawing under any Letter
of Credit as provided in Section 3.2.

         Reinvestment  Assets.  Any Equity  Interests or Capital Assets or other
         ---------------------
property  to be used or  otherwise  employed  by the  Borrower  or by any of its
Subsidiaries in its business.

         Reinvestment Election.  See Section 2.7(b).
         ---------------------

         Reinvestment  Event.  Any Asset Sale in  respect of which the  Borrower
         --------------------
shall have made a Reinvestment Election by delivering a Reinvestment Notice with
respect thereto.

         Reinvestment  Notice.  A written  notice duly executed by an authorized
         ---------------------
officer of the  Borrower  stating that (a) on and as of the date of such notice,
no Event of Default is continuing,  and (b) the Borrower  reasonably  expects to
use or to cause its  Subsidiaries  to use all or a specified  portion of the Net
Cash  Proceeds of an Asset Sale to  purchase,  construct  or  otherwise  acquire
Reinvestment Assets.

         Reinvestment Period. With respect to any Reinvestment  Election and the
         --------------------
related  Anticipated  Reinvestment  Amount, the period commencing on the date of
the  Reinvestment  Event  to  which  such  Reinvestment   Election  relates  and
terminating  on the  later to  occur  of (a) the  expiration  of the  period  of
eighteen (18) months commencing on the date of such  Reinvestment  Event, or (b)
if, prior to the expiration of such eighteen (18) month period,  the Borrower or
any of its Subsidiaries  shall have entered into a binding agreement to reinvest
all or any part of such Anticipated  Reinvestment Amount in Reinvestment Assets,
then the earlier of the expiration of (i) the period of twenty-four  (24) months
commencing on the date of such Reinvestment Event or (ii) the period of nine (9)
months  commencing  on the date such  binding  agreement to reinvest was entered
into.

         Reinvestment  Prepayment  Amount.  With  respect  to  any  Reinvestment
         ---------------------------------
Election,  the amount,  if any, on any  Reinvestment  Prepayment  Date  relating
thereto,  by which (a) the  Anticipated  Reinvestment  Amount in respect of such
Reinvestment  Election  exceeds  (b) the  aggregate  amount  thereof  which  the
Borrower or any of its Subsidiaries have expended or have entered into legal and
binding commitments to expend prior to such date to acquire Reinvestment Assets.

         Reinvestment   Prepayment   Date.  With  respect  to  any  Reinvestment
         ---------------------------------
Election,  the  earliest  to occur of:  (a) the  date,  if any,  upon  which the
Administrative Agent, on behalf of the Required

                                      -15-

Lenders,  shall have  delivered a written  termination  notice to the  Borrower;
provided,  however,  that such  notice  may only be given by the  Administrative
Agent to the Borrower  while any Event of Default shall be  continuing;  (b) the
last day of the relevant  Reinvestment Period; or (c) promptly after the date on
which the Borrower shall have determined not to, or shall have otherwise  ceased
to, proceed with the purchase, construction or other acquisition of Reinvestment
Assets with all or any part of the related Anticipated Reinvestment Amount.

         Required  Lenders.  As of any date,  any three or more Lenders  holding
         ------------------
more than fifty-one  percent (51%) of the  outstanding  principal  amount of the
Notes on such date, and if no such principal is  outstanding,  any three or more
Lenders whose aggregate Commitments constitute more than fifty-one percent (51%)
of the Total Commitment.

         S&P.  Standard & Poor's  Rating  Group,  a division of The  McGraw-Hill
         ----
Companies, Inc. and its successors.

         Sale. Any Transfer,  if the assets so transferred have (a) an aggregate
         -----
fair  value  (which  shall be the price at which the Board of  Directors  of the
relevant  Person  shall  have  agreed  to sell such  assets  in an arm's  length
transaction to a third party buyer which is not an Affiliate), as of the date of
such Transfer,  in excess of five percent (5%) of the  Consolidated Net Worth of
the Borrower,  or (b) an aggregate book value,  as of the date of such Transfer,
in excess of five percent (5%) of the Consolidated Net Worth of the Borrower.

         Sale and Leaseback  Transaction.  Any arrangement with any Person other
         --------------------------------
than a Tax Consolidated  Subsidiary providing for the leasing (as lessee) by the
Borrower of any property (except for temporary leases for a term,  including any
renewal  thereof,  of not more  than  three (3)  years  (provided  that any such
temporary  lease  may be for a term of up to five (5)  years if (a) the Board of
Directors  reasonably finds such term to be in the best interest of the Borrower
and (b) the primary  purpose of the transaction of which such lease is a part is
not to provide funds to or financing for the Borrower)), which property has been
or is to be sold or  transferred  by the Borrower (i) to any  Subsidiary  of the
Borrower in  contemplation  of or in connection with such arrangement or (ii) to
such other Person.

         Selling Lender.  See Section 17.10(b).
         --------------

         Settlement.  The  making  or  receiving  of  payments,  in  immediately
         -----------
available funds, by the Lenders,  to the extent necessary to cause each Lender's
actual share of the outstanding amount of Loans (after giving effect to any Loan
Request) to be equal to such Lender's  Commitment  Percentage of the outstanding
amount of such Loans  (after  giving  effect to any Loan  Request),  in any case
where, prior to such event or action, the actual share is not so equal.

         Settlement Amount.  See Section 2.9(a).
         -----------------

         Settlement  Date.  (a) The Drawdown  Date relating to any Loan Request,
         -----------------
(b) Friday of each week,  or if a Friday is not a Business Day, the Business Day
immediately  following  such  Friday,  (c) at the  option of the  Administrative
Agent, on any Business Day following a day on which the account  officers of the
Administrative  Agent  active upon the  Borrower's  account  become aware of the
existence  of an Event of Default,  (d) any  Business Day on which the amount of
Loans  outstanding  from TD Texas plus the Commitment  Percentage of TD Texas of

                                      -16-

the sum of the Maximum Drawing Amount and any Unpaid  Reimbursement  Obligations
is equal to or greater than the  Commitment  Percentage of TD Texas of the Total
Commitment, (e) the Business Day immediately following any Business Day on which
the amount of Loans outstanding  increases or decreases by more than $10,000,000
as compared to the previous Settlement Date, (f) any day on which any conversion
of a Base Rate Loan to a Eurodollar Rate Loan occurs, or (g) any Business Day on
which (i) the amount of outstanding  Loans  decreases and (ii) the amount of the
Administrative Agent's Loans outstanding equals zero Dollars ($0).

         Settling Lender.  See Section 2.9(a).
         ---------------

         Subordinated   Debt.   Any  Funded  Debt  of  the  Borrower   which  is
         --------------------
subordinated to the Obligations; provided, however, that: (a) the obligations of
the  Borrower  under  or  with  respect  to any of such  Funded  Debt  shall  be
subordinated,  and made junior in right of payment, to all of the Obligations on
terms and  conditions  reasonably  satisfactory  to the Agents,  as evidenced by
their prior written approval  thereof;  (b) no part of such Funded Debt shall be
guaranteed  by any  Subsidiary  of  the  Borrower  or  secured  by any  security
interests in or Liens on any property  (including  any Equity  Interests) of the
Borrower or any of its  Subsidiaries;  (c) no portion of the  principal  of such
Funded  Debt shall  mature or shall be  mandatorily  redeemable,  pursuant  to a
sinking fund  obligation  or  otherwise,  or be  redeemable at the option of the
holder  thereof,  in whole or in part, on or prior to the Maturity Date; and (d)
all of the other terms and  conditions  of such Funded Debt shall be  reasonably
satisfactory  to the  Agents,  as  evidenced  by their  prior  written  approval
thereof.

         Subordination   Agreement.   The   Subordination   Agreement,   in   or
         --------------------------
substantially  in the form of Exhibit F hereto,  pursuant to which in accordance
with the terms thereof, the Parent Affiliated Companies shall subordinate Funded
Debt  owing  to  them  by  the  Borrower  and  any of  its  Subsidiaries  to the
Obligations.

         Subsidiary.  Any  corporation,  association,  trust,  or other business
         -----------
entity  of which  the  designated  parent  shall at any  time  own  directly  or
indirectly  through a Subsidiary or  Subsidiaries at least a majority (by number
of votes) of the outstanding Voting Stock.

         Supplemental Fee Letter. The letter agreement dated June 25, 2002 among
         ------------------------
the Administrative Agent and the Borrower.

         Tax Consolidated Subsidiary. Any subsidiary of the Borrower with which,
         ----------------------------
at the time a Sale and  Leaseback  Transaction  is entered into by the Borrower,
the Borrower would be entitled to file a consolidated federal income tax return.

         TD Texas.  Toronto Dominion (Texas), Inc., in its individual capacity.
         --------

         Telerate Page 3750. The display page  designated  3750 on the Dow Jones
         -------------------
Telerate  Service (or such other page as may replace that page on that  service,
or such  other  service  as may  replace  the Dow Jones  Telerate  Service  as a
customary reference for interest rates).

         Total  Commitment.  The sum of the  Commitments  of the Lenders,  as in
         ------------------
effect from time to time.

                                      -17-

         Transfer. Any sale, transfer or other disposition of assets (other than
         ---------
by means of a  simultaneous  exchange  of assets of a similar  type and having a
comparable   value),   whether  in  one  transaction  or  a  series  of  related
transactions.

         Uniform Customs.  See Section 3.1(c).
         ---------------

         Unpaid Reimbursement Obligation. Any Reimbursement Obligation for which
         --------------------------------
the Borrower does not reimburse the Administrative  Agent and the Lenders on the
date specified in, and in accordance with, Section 3.2.

         Voting  Stock.  Stock or  similar  interests,  of any class or  classes
         --------------
(however  designated),  the holders of which are at the time  entitled,  as such
holders,  to vote for the  election  of the  directors  (or  persons  performing
similar  functions) of the  corporation,  association,  trust or other  business
entity  involved,  whether  or not the right so to vote  exists by reason of the
happening of a contingency.

         Wachovia.  Wachovia  Bank,  National  Association,  in  its  individual
         ---------
capacity.

         Wachovia Securities.  Wachovia Securities is the trade name under which
         --------------------
Wachovia  Corporation  conducts  its  investment  banking,  capital  markets and
institutional  securities business through First Union Securities,  Inc., Member
NYSE,  NASD,  SIPC  and  through  other  bank  and  non-bank  and  broker-dealer
subsidiaries of Wachovia Corporation.

         Section 1.2.  Rules of Interpretation.
                       ------------------------

         (a) A  reference  to any  document  or  agreement  shall  include  such
document or agreement as amended,  modified or supplemented from time to time in
accordance with its terms and the terms of this Credit Agreement.

         (b) The  singular  includes  the  plural and the  plural  includes  the
singular.

         (c) A reference to any law includes any  amendment or  modification  to
such law.

         (d) A reference to any Person  includes its  permitted  successors  and
permitted assigns.

         (e)  Accounting  terms not otherwise  defined  herein have the meanings
assigned  to them by  Generally  Accepted  Accounting  Principles  applied  on a
consistent basis by the accounting entity to which they refer.

         (f) The words "include", "includes" and "including" are not limiting.

         (g) Reference to a particular "Section " refers to that section of this
Credit Agreement unless otherwise indicated.

         (h) The words "herein", "hereof",  "hereunder" and words of like import
shall  refer to the  agreement  in which  they  appear as a whole and not to any
particular   section  or  subdivision  of  that   agreement   unless   otherwise
specifically indicated.

                                      -18-

         Section 2.  THE REVOLVING CREDIT FACILITY.
                     -----------------------------

         Section 2.1.  Commitment to Lend.  Subject to the terms and  conditions
                       -------------------
set forth in this Credit Agreement, each of the Lenders severally agrees to lend
to the Borrower and the Borrower may borrow,  repay,  and reborrow  from time to
time between the date of this Credit Agreement and the Maturity Date upon notice
by the Borrower to the Administrative Agent given in accordance with Section 2.5
such  sums  as may  be  requested  by the  Borrower  up to a  maximum  aggregate
principal  amount  outstanding  (after  giving  effect to all Loans  then  being
requested) at any one time equal to such Lender's Commitment minus such Lender's
Commitment  Percentage of the sum of the Maximum  Drawing  Amount and all Unpaid
Reimbursement  Obligations;  provided that the sum of the outstanding  amount of
the Loans  (after  giving  effect to all Loans  then being  requested)  plus the
Maximum  Drawing  Amount  plus all Unpaid  Reimbursement  Obligations  shall not
exceed the Total Commitment. The Loans shall be made pro rata in accordance with
each Lender's Commitment Percentage.  Each request for a Loan shall constitute a
representation  by the Borrower that the  conditions  set forth in Section 9 and
Section 10, in the case of the initial Loans to be made on the Closing Date, and
Section 10, in the case of all other Loans,  have been  satisfied on the date of
such request. Each Loan shall be denominated in Dollars.

         Section  2.2.   Facility  Fee.  The  Borrower  agrees  to  pay  to  the
                         --------------
Administrative  Agent for the accounts of the Lenders in  accordance  with their
respective Commitment Percentages a facility fee (the "Facility Fee") calculated
daily on the Total Commitment in effect on such date at the per annum rate equal
to that amount set forth on Schedule 1.2 in the row headed  Facility Fee beneath
the  column  for the Debt  Rating in effect  for such  date.  The amount of such
Facility Fee shall be payable  quarterly in arrears on the last  Business Day of
each March,  June,  September  and  December  and on the  Maturity  Date for the
calendar quarter, or portion thereof, then ended.

         Section 2.3.  Reduction of Commitment.
                       ------------------------

         (a) The Borrower shall have the right at any time and from time to time
upon five (5)  Business  Days'  written  notice to the  Administrative  Agent to
reduce by $5,000,000 or an integral  multiple of $1,000,000 in excess thereof or
terminate entirely the unborrowed portion of the Total Commitment, whereupon the
Commitments  of the Lenders shall be reduced pro rata in  accordance  with their
respective Commitment  Percentages of the amount specified in such notice or, as
the case may be, terminated. Promptly after receiving any notice of the Borrower
delivered pursuant to this Section 2.3, the Administrative Agent will notify the
Lenders of the substance thereof. No reduction of the Commitments of the Lenders
may be  reinstated.  Notwithstanding  the  provisions  of Section 2.2,  upon the
effective  date  of  any  such  termination,  the  Borrower  shall  pay  to  the
Administrative  Agent for the respective accounts of the Lenders the full amount
of any  Facility  Fee then accrued and unpaid with respect to the portion of the
Total  Commitment  so  reduced;  provided  that an  invoice is  provided  to the
Borrower by the Administrative Agent with respect to such Facility Fee.

         (b) In the event that the C20  Acquisition is not completed,  or any of
the other  conditions  identified  and  described  in clauses (a) through (e) of
Section  7.10 are not  satisfied,  on or prior to November 30,  2002,  then,  on
December 1, 2002, (i) all of the  Commitments  shall terminate in full, and (ii)
all of the Obligations shall become due and payable in full.

                                      -19-

         (c) On each date on which the Borrower is required by Section 2.7(b) to
make a mandatory  repayment of the Loans,  the Total Commitment shall be reduced
by an amount equal to such required repayment,  whereupon the Commitments of the
Lenders shall be reduced pro rata in accordance with their respective Commitment
Percentages of the amount of the reduction in the Total Commitment.

         Section 2.4.  The Notes for the Loans.  The Loans shall be evidenced by
                       ------------------------
separate promissory notes of the Borrower in substantially the form of Exhibit A
hereto (each a "Note"),  dated the Closing Date and completed  with  appropriate
insertions. One Note shall be payable to the order of each Lender in a principal
amount equal to such Lender's  Commitment or, if less, the outstanding amount of
all Loans made by such  Lender,  plus  interest  accrued  thereon,  as set forth
below.  The Borrower  irrevocably  authorizes each Lender to make or cause to be
made,  at or about the time of  receipt  of any  payment  of  principal  on such
Lender's  Note,  an  appropriate  notation  reflecting  such payment on the Note
Record attached to such Lender's Note. The  outstanding  amount of the Loans set
forth on such Note Record shall be prima facie evidence of the principal  amount
thereof owing and unpaid to such Lender, but the failure to record, or any error
in so  recording,  any such  amount  on such  Note  Record  shall  not  limit or
otherwise affect the obligations of the Borrower  hereunder or under any Note to
make  payments of principal of or interest on any Note when due. Upon receipt of
any affidavit of any officer of a Lender as to the loss,  theft,  destruction or
mutilation  of its  Note,  together  with an  indemnity  in form  and  substance
reasonably  satisfactory  to the  Borrower,  and,  in the case of any such loss,
theft,  destruction or mutilation,  upon cancellation of such Note, the Borrower
will issue,  in lieu thereof,  a replacement  Note in the same principal  amount
thereof and otherwise of like tenor.

         Section 2.5.  Notice and Matter of Borrowing  or  Conversion  of Loans;
                       ---------------------------------------------------------
Swing Line.
- -----------

         (a)  Whenever  the  Borrower  desires to obtain a Loan  hereunder or to
convert an  outstanding  Loan into a Loan of another  type  provided for in this
Credit Agreement,  the Borrower shall give to the  Administrative  Agent written
notice in the form of  Exhibit B hereto (or  telephonic  notice  confirmed  in a
writing in the form of Exhibit B hereto),  which written notice must be received
by the  Administrative  Agent no later than (i) 11:00 a.m., Houston time, on the
day on which the requested  Loan is to be made or converted to a Base Rate Loan,
and (ii) 11:00 a.m.,  Houston time, on the date two (2) Business Days before the
day on which the requested Loan is to be made or converted to a Eurodollar  Rate
Loan.  Each such notice (a "Loan Request") shall specify the type of Loan (i.e.,
Base Rate Loan or Eurodollar Rate Loan),  the Drawdown Date, or (as the case may
be) the date of conversion,  and principal  amount of each Loan or the principal
portion  thereof to be  converted,  the  interest  rate option to be  applicable
thereto,  and the duration of the applicable Interest Period, if any (subject in
any case to the provisions of the definition of the term "Interest  Period") and
shall be  substantially in the form of Exhibit B; provided,  however,  that when
any  Default  or  Event of  Default  is  continuing,  no Base  Rate  Loan may be
converted into a Eurodollar Rate Loan.

         (b) Promptly upon receipt of any such Loan Request,  the Administrative
Agent  shall  notify  each of the Lenders of the  substance  thereof.  Each Loan
Request shall be irrevocable and binding on the Borrower, and shall obligate the
Borrower  to  accept  the Loan of the type  requested  from the  Lenders  on the
proposed  Drawdown Date or (as the case may be) to convert

                                      -20-


the Loan or a portion  thereof as  requested.  Each Loan  Request  shall be in a
minimum  amount of  $3,000,000  or an  integral  multiple  of $250,000 in excess
thereof.

         (c)  Notwithstanding  the notice and minimum  amount  requirements  set
forth in Section  2.5(a) and (b) but otherwise in accordance  with the terms and
conditions of this Credit Agreement,  the Administrative  Agent may, in its sole
discretion and without  conferring with the Lenders,  make Loans to the Borrower
in an  aggregate  principal  amount  not to  exceed  $20,000,000.  The  Borrower
acknowledges  and agrees that the making of such Loans shall,  in each case,  be
subject in all respects to the  provisions  of this Credit  Agreement as if they
were  Loans  covered  by a  Loan  Request  including,  without  limitation,  the
limitations  set forth in Section 2.1 and the  requirements  that the applicable
provisions  of Section 9 and Section 10 be  satisfied.  All actions taken by the
Administrative  Agent pursuant to the provisions of this Section 2.5(c) shall be
conclusive and binding on the Borrower and the Lenders absent the Administrative
Agent's  gross  negligence  or willful  misconduct.  Loans made pursuant to this
Section 2.5(c) shall be Base Rate Loans until  converted in accordance  with the
provisions of the Credit  Agreement  and,  prior to a Settlement,  such interest
shall be for the account of the Administrative Agent. Unless a Lender shall have
notified the Administrative Agent, prior to its making any Loan pursuant to this
Section 2.5(c),  that any applicable  condition precedent set forth in Section 9
or  Section  10, as  applicable,  had not then  been  satisfied,  such  Lender's
obligation to make payments of its  Settlement  Amount with respect to such Loan
pursuant to Section 2.9(a) shall be unconditional,  continuing,  irrevocable and
absolute  and shall not be affected  by any  circumstances,  including,  without
limitation, (i) any set-off,  counterclaim,  recoupment,  defense or other right
which such Lender may have against the Administrative Agent or any other Person,
(ii) the occurrence or  continuance of a Default or Event of Default,  (iii) any
adverse  change in the condition  (financial  or otherwise) of the Borrower,  or
(iv) any other circumstances, happening or event whatsoever.

         Section 2.6.  Funds for Loans.
                       ----------------

         (a) Not later than 2:00 p.m.  (Houston  time) on the proposed  Drawdown
Date of any Loans,  each of the Lenders,  severally,  will make available to the
Administrative  Agent, at its head office in immediately  available  funds,  the
amount of such  Lender's  Commitment  Percentage  of the amount of the requested
Loans.  Upon receipt  from each Lender of such  amount,  and upon receipt of the
documents  required  by  Sections  9 and 10 and the  satisfaction  of the  other
conditions set forth therein, to the extent applicable, the Administrative Agent
will make the  aggregate  amount of such Loans  available to the  Borrower.  The
failure or refusal of any Lender to make available to the  Administrative  Agent
at the  aforesaid  time  on any  Drawdown  Date  the  amount  of its  Commitment
Percentage  of the  requested  Loans shall not relieve any other Lender from its
several obligation  hereunder to make available to the Administrative  Agent the
amount of such  Lender's  Commitment  Percentage  of the amount of the requested
Loans.

         (b) The  Administrative  Agent may (unless  notified to the contrary by
any Lender prior to a Drawdown  Date) assume that each Lender has made available
to the  Administrative  Agent on such  Drawdown Date the amount of such Lender's
Commitment  Percentage of the amount of the  requested  Loans to be made on such
Drawdown  Date, and the  Administrative  Agent may (but it shall not be required
to),  in  reliance  upon such  assumption,  make  available  to the  Borrower  a
corresponding  amount. If any Lender makes available to the Administrative Agent
such amount advanced by the  Administrative  Agent on a date after such Drawdown
Date,

                                      -21-

such Lender shall pay to the  Administrative  Agent on demand an amount equal to
the product of (i) the  average  computed  for the period  referred to in clause
(iii)  below,  of the Federal  Funds Rate for each day  included in such period,
times (ii) the amount of such  Lender's  Commitment  Percentage of the amount of
such Loans, times (iii) a fraction, the numerator of which is the number of days
that  elapse  from and  including  such  Drawdown  Date to the date on which the
amount of such Lender's Commitment  Percentage of the amount of such Loans shall
become immediately available to the Administrative Agent, and the denominator of
which is 360. If the amount of such Lender's Commitment Percentage of the amount
of such Loans is not made available to the  Administrative  Agent by such Lender
within three (3) Business Days of such Drawdown Date, the  Administrative  Agent
shall be entitled  to recover  such  amount  from the  Borrower on demand,  with
interest  thereon  at the rate per annum  applicable  to the Loans  made on such
Drawdown Date. A statement of the  Administrative  Agent submitted to any Lender
with  respect to any  amounts  owing under this  paragraph  shall be prima facie
evidence of the amount due and owing to the Administrative Agent by such Lender.

         Section 2.7.  Mandatory Repayments of Loans.
                       ------------------------------

         (a) The Borrower promises to pay the outstanding amount of all Loans on
the earlier to occur of a Change in Control or the Maturity  Date.  In addition,
if at any time the outstanding  amount of the Loans,  the Maximum Drawing Amount
and all Unpaid  Reimbursement  Obligations  exceeds the Total Commitment at such
time,  then the Borrower shall  immediately pay the amount of such excess to the
Administrative  Agent  for  application:  first,  to  any  Unpaid  Reimbursement
Obligations;  second,  to the  Loans;  and  third,  to  Cash  Collateralize  the
Reimbursement Obligations as contemplated by Section 3.2(b) and (c).

         (b) If on any  date  the  Borrower  or  any of its  Subsidiaries  shall
receive Net Cash Proceeds from any Asset Sale (other than Excluded Sales),  then
an amount equal to 100% of the Net Cash  Proceeds  from such Asset Sale shall be
applied upon receipt to prepay principal of the outstanding Loans; provided that
the requirements  for mandatory  repayment set forth in this paragraph (b) shall
be  reduced  if and to the  extent  that the  Borrower  elects,  as  hereinafter
provided, to cause all or part of such Net Cash Proceeds to be reinvested by the
Borrower  or by one or more of its  Subsidiaries  in  Reinvestment  Assets on or
prior  to  the  end of the  applicable  Reinvestment  Period  (herein  called  a
"Reinvestment  Election").  The Borrower may exercise the Reinvestment  Election
with  respect  to any  Asset  Sale  only if (i) no  Event  of  Default  shall be
continuing  at the time of such Asset  Sale,  and (ii) the  Borrower  delivers a
Reinvestment Notice with respect to such Asset Sale to the Administrative  Agent
not  later  than  the  thirtieth   Business  Day  following  the  date  of  such
Reinvestment Event, with such Reinvestment Election being effective with respect
to the Anticipated Reinvestment Amount specified in such Reinvestment Notice. On
the Reinvestment  Prepayment Date with respect to any Reinvestment  Election, an
amount  equal  to  the  Reinvestment   Prepayment   Amount,  if  any,  for  such
Reinvestment  Election  shall be applied as a mandatory  repayment  of principal
hereunder.

         (c) Nothing in this Section 2.7 shall be construed as a consent for, or
be deemed to  permit,  any Asset Sale not  otherwise  permitted  by this  Credit
Agreement.

         (d) Each  repayment  pursuant  to this  Section 2.7 shall be subject to
Section 4.3 and accompanied by the payment of accrued  interest on the principal
repaid to the date of

                                      -22-


payment.  Each partial repayment of the Loan shall be allocated (i) first, among
the Lenders, in proportion,  as nearly as practicable,  to the respective unpaid
principal  amount  of  each  Lender's  Note,  with  adjustments  to  the  extent
practicable to equalize any prior repayments not exactly in proportion, and (ii)
second, to Cash Collateralize any outstanding Letters of Credit.

         Section 2.8. Optional  Repayments of Loans. The Borrower shall have the
                      ------------------------------
right, at its election, to repay the outstanding amount of any Loans, as a whole
or in part, at any time without penalty or premium; provided that in the case of
any full or partial prepayment of the outstanding amount of any Eurodollar Loans
prior to the end of the Interest Period applicable  thereto,  the Borrower shall
be  obligated to reimburse  the Lenders in respect  thereof  pursuant to Section
4.3. The Borrower shall give the Administrative  Agent, no later than 11:00 a.m.
(Houston time), at least two (2) Business Days' notice of any proposed repayment
of  Loans,  in each case  specifying  the  proposed  date of  repayment  and the
principal amount to be paid, which notice, if not in writing,  shall be promptly
confirmed in writing.  Each such partial  payment of Loans shall be in a minimum
amount of  $5,000,000 or an integral  multiple of $1,000,000 in excess  thereof.
Each repayment  pursuant to this Section 2.8 shall be accompanied by the payment
of accrued  interest on the principal  repaid to the date of payment.  Each such
partial repayment of Loans shall be allocated among the Lenders,  in proportion,
as nearly as  practicable,  to the respective  unpaid  principal  amount of each
Lender's Note, with adjustments to the extent  practicable to equalize any prior
repayments not exactly in proportion.

         Section 2.9.  Settlements.
                       ------------

         (a) General.  On each Settlement Date, the Administrative  Agent shall,
not later than 11:00  a.m.  (Houston  time),  give  facsimile  notice (a) to the
Lender and the Borrower of the  respective  outstanding  amount of Loans made by
the Administrative Agent on behalf of the Lenders from the immediately preceding
Settlement Date through the close of business on the prior day and the amount of
any  Loans to be made  (following  the  giving  of notice  pursuant  to  Section
2.5(a)(ii) in the case of Eurodollar Rate Loans) on such date pursuant to a Loan
Request and (b) to the Lenders of the amount (a  "Settlement  Amount") that each
Lender (a "Settling  Lender")  shall pay to effect a  Settlement  of any Loan. A
statement of the Administrative  Agent submitted to the Lenders and the Borrower
or to the Lenders with respect to any amounts owing under this Section 2.9 shall
be prima facie evidence of the amount due and owing. Each Settling Lender shall,
not later than 2:00 p.m.  (Houston time) on such Settlement Date,  effect a wire
transfer  of  immediately  available  funds to the  Administrative  Agent in the
amount of the Settlement Amount for such Settling Lender.  All funds advanced by
any Lender as a  Settling  Lender  pursuant  to this  Section  2.9 shall for all
purposes be treated as a Loan made by such  Settling  Lender to the Borrower and
all funds  received  by any Lender  pursuant  to this  Section 2.9 shall for all
purposes be treated as  repayment  of amounts owed with respect to Loans made by
such  Lender.  In the event that any  bankruptcy,  reorganization,  liquidation,
receivership  or similar cases or  proceedings in which the Borrower is a debtor
prevents a  Settling  Lender  from  making  any Loan to effect a  Settlement  as
contemplated  hereby,  such  Settling  Lender  will make such  dispositions  and
arrangements with the other Lenders with respect to such Loans, either by way of
purchase  of  participations,  distribution,  pro tanto  assignment  of  claims,
subrogation  or  otherwise  as  shall  result  in  each  Lender's  share  of the
outstanding Loans being equal, as nearly as may be, to such Lender's  Commitment
Percentage of the outstanding amount of the Loans.

                                      -23-

         (b)  Failure to Make Funds  Available.  The  Administrative  Agent may,
              ---------------------------------
unless  notified to the  contrary by any  Settling  Lender prior to a Settlement
Date,  assume that such Settling  Lender has made or will make  available to the
Administrative  Agent  on such  Settlement  Date  the  amount  of such  Settling
Lender's  Settlement Amount, and the Administrative  Agent may (but it shall not
be  required  to), in  reliance  upon such  assumption,  make  available  to the
Borrower a corresponding  amount.  If any Settling Lender makes available to the
Administrative  Agent such  amount on a date after such  Settlement  Date,  such
Settling Lender shall pay to the Administrative  Agent on demand an amount equal
to the product of (i) the average  computed for the period referred to in clause
(iii)  below,  of the Federal  Funds Rate for each day  included in such period,
times (ii) the amount of such  Settlement  Amount,  times (iii) a fraction,  the
numerator  of which is the number of days that  elapse from and  including  such
Settlement Date to the date on which the amount of such Settlement  Amount shall
become immediately available to the Administrative Agent, and the denominator of
which is 360. A statement of the Administrative Agent submitted to such Settling
Lender with  respect to any amounts  owing under this  Section  2.9(b)  shall be
prima facie evidence of the amount due and owing to the Administrative  Agent by
such Settling Lender.  If such Settling  Lender's  Settlement Amount is not made
available to the  Administrative  Agent by such Settling Lender within three (3)
Business Days following such Settlement Date, the Administrative  Agent shall be
entitled  to recover  such amount from the  Borrower  on demand,  with  interest
thereon  at the rate per annum  applicable  to the  Loans as of such  Settlement
Date.

         (c) No Effect on Other Lenders.  The failure or refusal of any Settling
             ---------------------------
Lender to make available to the  Administrative  Agent at the aforesaid time and
place on any  Settlement  Date the amount of such Settling  Lender's  Settlement
Amount  shall  not (a)  relieve  any  other  Settling  Lender  from its  several
obligations  hereunder to make available to the Administrative  Agent the amount
of such other Settling Lender's Settlement Amount or (b) impose upon any Lender,
other than the  Settling  Lender so  failing or  refusing,  any  liability  with
respect to such failure or refusal or otherwise  increase the Commitment of such
other Lender.

         Section 3.  LETTERS OF CREDIT.
                     ------------------
         3.1.  Letter of Credit Commitments.
               -----------------------------

         (a)  Commitment  to Issue  Letters of Credit.  Subject to the terms and
              ----------------------------------------
conditions  hereof and the execution and delivery by the Borrower of a letter of
credit  application on the  Administrative  Agent's customary form (a "Letter of
Credit  Application"),  the Administrative Agent on behalf of the Lenders and in
reliance upon the agreement of the Lenders set forth in Section  3.1(d) and upon
the representations and warranties of the Borrower contained herein,  agrees, in
its  individual  capacity,  to issue,  extend  and renew for the  account of the
Borrower one or more standby or documentary letters of credit  (individually,  a
"Letter of Credit"),  in such form as may be requested  from time to time by the
Borrower and agreed to by the Administrative  Agent;  provided,  however,  that,
after  giving  effect  to such  request,  (i) the sum of the  aggregate  Maximum
Drawing  Amount  and all  Unpaid  Reimbursement  Obligations  shall  not  exceed
$50,000,000  at any one time and (ii) the sum of (A) the Maximum  Drawing Amount
on all Letters of Credit, (B) all Unpaid Reimbursement Obligations,  and (C) the
amount of all Loans  outstanding  shall not exceed the Total  Commitment at such
time.

                                      -24-

         (b) Letter of Credit  Applications.  Each Letter of Credit  Application
             -------------------------------
shall be completed to the satisfaction of the Administrative Agent. In the event
that any  provision of any Letter of Credit  Application  shall be  inconsistent
with any provision of this Credit Agreement,  then the provisions of this Credit
Agreement shall, to the extent of any such inconsistency, govern.

         (c) Terms of Letters of Credit. Each Letter of Credit issued,  extended
             ---------------------------
or renewed hereunder shall,  among other things,  (i) provide for the payment of
sight drafts for honor  thereunder  when presented in accordance  with the terms
thereof and when accompanied by the documents  described therein,  and (ii) have
an expiry  date no later than the date which is  fourteen  (14) days (or, if the
Letter of Credit is confirmed  by a confirmer  or otherwise  provides for one or
more nominated  persons,  forty-five (45) days) prior to the Maturity Date. Each
Letter of Credit so issued,  extended or renewed shall be subject to the Uniform
Customs and Practice for  Documentary  Credits  (1993  Revision),  International
Chamber of Commerce Publication No. 500 or any successor version thereto adopted
by the  Administrative  Agent in the ordinary course of its business as a letter
of credit  issuer and in effect at the time of issuance of such Letter of Credit
(the "Uniform  Customs") or, in the case of a standby  Letter of Credit,  either
the  Uniform   Customs  or  the   International   Standby   Practices   (ISP98),
International  Chamber of Commerce Publication No. 590, or any successor code of
standby  letter of credit  practices  among banks adopted by the  Administrative
Agent in the  ordinary  course of its  business  as a  standby  letter of credit
issuer and in effect at the time of issuance of such Letter of Credit.

         (d) Reimbursement  Obligations of Lenders. Each Lender severally agrees
             --------------------------------------
that it shall be  absolutely  liable,  without  regard to the  occurrence of any
Default or Event of Default or any other condition precedent whatsoever,  to the
extent of such Lender's  Commitment  Percentage of such amount, to reimburse the
Administrative  Agent  on  demand  for  the  amount  of each  draft  paid by the
Administrative  Agent under each Letter of Credit to the extent that such amount
is not reimbursed by the Borrower  pursuant to Section 3.2 (such agreement for a
Lender being called herein the "Letter of Credit Participation" of such Lender).

         (e) Participations of Lenders. Each such payment made by a Lender shall
             --------------------------
be treated as the  purchase  by such Lender of a  participating  interest in the
Borrower's Reimbursement Obligation under Section 3.2 in an amount equal to such
payment.  Each Lender shall share in accordance with its participating  interest
in any interest which accrues pursuant to Section 3.2.

         Section 3.2.  Reimbursement  Obligations  of the Borrower.  In order to
                       --------------------------------------------
induce the Administrative Agent to issue, extend and renew each Letter of Credit
and the Lenders to participate  therein, the Borrower hereby agrees to reimburse
or pay to the Administrative  Agent, for the account of the Administrative Agent
or (as the case may be) the  Lenders,  with  respect  to each  Letter  of Credit
issued, extended or renewed by the Administrative Agent hereunder,

         (a) except as otherwise  expressly  provided in Section 3.2(b) and (c),
on each date that any draft  presented under such Letter of Credit is honored by
the Administrative  Agent, or the Administrative Agent otherwise makes a payment
with respect thereto,  (i) the amount paid by the Administrative  Agent under or
with respect to such Letter of Credit,  and (ii) the amount of any taxes,  fees,
charges or other costs and expenses  whatsoever  incurred by the  Administrative

                                      -25-

Agent or any Lender in  connection  with any payment made by the  Administrative
Agent or any Lender under, or with respect to, such Letter of Credit,

         (b) upon the reduction (but not termination) of the Total Commitment to
an  amount  less  than the  Maximum  Drawing  Amount,  an  amount  equal to such
difference,  which  amount  shall be held by the  Administrative  Agent  for the
benefit of the Lenders and the  Administrative  Agent as Cash Collateral for all
Reimbursement Obligations, and

         (c) upon the termination of the Total  Commitment,  or the acceleration
of the  Reimbursement  Obligations  with  respect  to all  Letters  of Credit in
accordance  with Section 11, an amount equal to the then Maximum  Drawing Amount
on all Letters of Credit, which amount shall be held by the Administrative Agent
for the benefit of the Lenders and the  Administrative  Agent as Cash Collateral
for all Reimbursement Obligations.

         Each  such  payment  shall be made to the  Administrative  Agent at the
Administrative  Agent's Office in immediately  available funds.  Interest on any
and all amounts  remaining  unpaid by the Borrower under this Section 3.2 at any
time from the date such  amounts  become due and  payable  (whether as stated in
this Section 3.2, by acceleration  or otherwise)  until payment in full (whether
before or after judgment) shall be payable to the Administrative Agent on demand
at the rate specified in Section 4.11 for overdue principal on the Loans.

         Section 3.3. Letter of Credit Payments. If any draft shall be presented
                      --------------------------
or other  demand for  payment  shall be made  under any  Letter of  Credit,  the
Administrative  Agent  shall  notify the  Borrower of the date and amount of the
draft  presented  or demand for payment and of the date and time when it expects
to pay such draft or honor such demand for  payment.  If the  Borrower  fails to
reimburse the  Administrative  Agent as provided in Section 3.2 on or before the
date  that such  draft is paid or other  payment  is made by the  Administrative
Agent, the Administrative Agent may at any time thereafter notify the Lenders of
the amount of any such Unpaid Reimbursement  Obligation. No later than 3:00 p.m.
(Houston  time) on the Business Day next  following  the receipt of such notice,
each  Lender  shall  make  available  to  the   Administrative   Agent,  at  the
Administrative  Agent's Office,  in immediately  available funds,  such Lender's
Commitment Percentage of such Unpaid Reimbursement Obligation,  together with an
amount equal to the product of (a) the average, computed for the period referred
to in clause (c) below,  of the Federal Funds Rate for each day included in such
period,  times (b) the amount equal to such  Lender's  Commitment  Percentage of
such Unpaid  Reimbursement  Obligation,  times (c) a fraction,  the numerator of
which  is the  number  of days  that  elapse  from  and  including  the date the
Administrative  Agent  paid the  draft  presented  for honor or  otherwise  made
payment to the date on which such Lender's Commitment  Percentage of such Unpaid
Reimbursement   Obligation   shall   become   immediately   available   to   the
Administrative Agent, and the denominator of which is 360. The responsibility of
the  Administrative  Agent  to the  Borrower  and the  Lenders  shall be only to
exercise  reasonable  care and to determine that the documents  (including  each
draft) delivered under each Letter of Credit in connection with such presentment
shall be in conformity in all material respects with such Letter of Credit.

         Section 3.4.  Obligations  Absolute.  The Borrower's  obligations under
                       ----------------------
this  Section  3  shall  be  absolute  and  unconditional   under  any  and  all
circumstances  and  irrespective  of the  occurrence  of any Default or Event of
Default or any condition  precedent  whatsoever or any setoff,  counterclaim  or

                                      -26-

defense  to  payment  which  the  Borrower  may  have or have  had  against  the
Administrative  Agent, any Lender or any beneficiary of a Letter of Credit.  The
Borrower further agrees with the  Administrative  Agent and the Lenders that the
Administrative  Agent and the  Lenders  shall not be  responsible  for,  and the
Borrower's Reimbursement Obligations under Section 3.2 shall not be affected by,
among  other  things,  the  validity  or  genuineness  of  documents  or of  any
endorsements  thereon,  even if such documents should in fact prove to be in any
or all respects  invalid,  fraudulent or forged, or any dispute between or among
the  Borrower,  the  beneficiary  of any  Letter  of  Credit  or  any  financing
institution  or other party to which any Letter of Credit may be  transferred or
any claims or defenses whatsoever of the Borrower against the beneficiary of any
Letter  of  Credit  or any such  transferee.  The  Administrative  Agent and the
Lenders shall not be liable for any error,  omission,  interruption  or delay in
transmission,   dispatch  or   delivery  of  any  message  or  advice,   however
transmitted,  in connection with any Letter of Credit.  The Borrower agrees that
any action taken or omitted by the  Administrative  Agent or any Lender under or
in connection  with each Letter of Credit and the related  drafts and documents,
if done in good  faith  and in  conformity  with  the  requirements  of the last
sentence of Section 3.3 if and to the extent  applicable,  shall be binding upon
the  Borrower  and  shall  not  result  in  any  liability  on the  part  of the
Administrative Agent or any Lender to the Borrower.

         Section 3.5.  Reliance by Issuer.  To the extent not inconsistent  with
                       -------------------
Section 3.4, the  Administrative  Agent shall be entitled to rely,  and shall be
fully  protected  in  relying  upon,  any  Letter  of  Credit,  draft,  writing,
resolution,   notice,  consent,   certificate,   affidavit,  letter,  cablegram,
telegram,  telecopy,  telex  or  teletype  message,  statement,  order  or other
document believed by it to be genuine and correct and to have been signed,  sent
or made by the proper Person or Persons and upon advice and  statements of legal
counsel,   independent   accountants   and  other   experts   selected   by  the
Administrative  Agent.  The  Administrative  Agent shall be fully  justified  in
failing or refusing to take any action  under this  Credit  Agreement  unless it
shall first have received such advice or concurrence of the Required  Lenders as
it  reasonably  deems  appropriate  or it  shall  first  be  indemnified  to its
reasonable satisfaction by the Lenders against any and all liability and expense
which may be incurred by it by reason of taking or  continuing  to take any such
action.  The  Administrative  Agent  shall in all  cases be fully  protected  in
acting, or in refraining from acting,  under this Credit Agreement in accordance
with a request of the Required Lenders, and such request and any action taken or
failure to act pursuant thereto shall be binding upon the Lenders and all future
holders of the Notes or of a Letter of Credit Participation.

         Section 3.6.  Letter of Credit Fee.  The  Borrower  shall pay a fee (in
                       ---------------------
each case, a "Letter of Credit Fee") to the  Administrative  Agent in respect of
each Letter of Credit in (a) an amount  equal to the per annum rate set forth on
Schedule 1.2 in the applicable row headed Margin  Percentage  beneath the column
for the Debt Rating (as adjusted in accordance  with the  paragraphs  below such
table) in effect  for such date on the  undrawn  face  amount of such  Letter of
Credit for the  accounts  of the  Lenders in  accordance  with their  respective
Commitment  Percentages  and (b) an amount  equal to  one-tenth  of one  percent
(0.10%)  per annum on the  undrawn  face amount of such Letter of Credit for the
account of the  Administrative  Agent as a fronting  fee. The accrued  Letter of
Credit  Fee shall be  payable,  quarterly  in  arrears,  on the last day of each
March,  June,  September  and December and on the Maturity Date for the calendar
quarter,  or portion  thereof,  then ended. In respect of each Letter of Credit,
the Borrower shall also pay to the  Administrative  Agent for the Administrative
Agent's own account, at such other time or times as such charges are customarily
made by the Administrative Agent, the

                                      -27-

Administrative  Agent's customary issuance,  amendment,  negotiation or document
examination and other administrative fees as in effect from time to time.

         Section 4.  INTEREST; CERTAIN GENERAL PROVISIONS.
                     ------------------------------------

         Section 4.1.  Interest on Loans; Payments of Interest.
                       ----------------------------------------
         (a) Except as otherwise provided by Section 4.11 hereof, each Base Rate
Loan shall bear interest on the outstanding  principal  amount thereof at a rate
per annum equal to the Base Rate in effect  from time to time,  which rate shall
change contemporaneously with any change in the Base Rate.

         (b)  Except  as  otherwise  provided  by  Section  4.11  hereof,   each
Eurodollar  Rate Loan shall bear interest on the  outstanding  principal  amount
thereof,  for each Interest Period applicable thereto, at a rate per annum equal
to the Eurodollar Rate determined for such Interest Period,  plus the applicable
Margin Percentage as in effect on the first day of such Interest Period.

         (c) The Borrower  absolutely  and  unconditionally  promises to pay all
interest  accrued  on each Loan in arrears on each  Interest  Payment  Date with
respect thereto.

         Section 4.2.  Interest  Period  Options.  Upon notice (a  "Continuation
                       --------------------------
Request") given to the  Administrative  Agent no later than 11:00 a.m.  (Houston
time) at least two (2)  Business  Days prior to the  expiration  of an  Interest
Period  applicable  to any  Eurodollar  Rate  Loan,  the  Borrower  may elect to
continue such  Eurodollar  Rate Loan upon the expiration of the then  applicable
Interest Period for another  Interest  Period of the duration  specified in such
notice;  provided,  however,  that no Eurodollar Rate Loan may be continued as a
Eurodollar Rate Loan when any Default or Event of Default is continuing,  and on
the last day of the then  current  Interest  Period with  respect  thereto  each
Eurodollar  Rate Loan shall  convert to a Base Rate Loan;  and provided  further
that the  Eurodollar  Rate Loans to which a particular  Interest  Period applies
shall be in an aggregate  principal amount of $3,000,000 or an integral multiple
of $250,000 in excess  thereof.  Each  continuation  of a  Eurodollar  Rate Loan
hereunder  shall be allocated  between the Lenders in  proportion,  as nearly as
practicable,  to such Lender's  Commitment  Percentage,  with adjustments to the
extent   practicable  to  equalize  any  prior   continuations  not  exactly  in
proportion.

         Section 4.3.  Indemnity.  The Borrower  agrees to indemnify each Lender
                       ----------
and to hold each Lender  harmless  from any loss or expense that such Lender may
sustain or incur as a  consequence  of (a) default by the Borrower in payment of
the  principal  amount of or interest on any Loans,  including  any such loss or
expense arising from interest or fees payable by such Lender to lenders of funds
obtained by it in order to maintain  its Loans,  (b) default by the  Borrower in
making a borrowing  after the  Borrower has given (or is deemed to have given) a
Loan Request or a  Continuation  Request in accordance  with Sections 2.5 or 4.2
other than as a result of a default by any Lender, (c) the making of any payment
of a Loan on a day that is not the last day of the  applicable  Interest  Period
with  respect  thereto,  including  interest  or fees  payable  by any Lender to
lenders of funds  obtained  by it in order to  maintain  any such  Loan,  to the
extent not off-set by income derived from the  redeployment of such funds or (d)
default by the Borrower in making any repayment of a Loan after the Borrower has
given a notice in

                                      -28-

accordance with Section 2.8. This covenant shall survive the termination of this
Credit Agreement and payment of the Notes.

         Section 4.4. Funds for Payments. All payments of principal, interest on
                      -------------------
Loans made to the Borrower and all  Reimbursement  Obligations,  Facility  Fees,
Letter of Credit Fees and any other  amounts due  hereunder  or under any of the
other Loan  Documents  shall be made on the due date  thereof by the Borrower to
the Administrative Agent at the Administrative  Agent's office in Houston, Texas
or at such other location in the United States that the Administrative Agent may
from time to time designate in writing (the "Administrative Agent's Office"), in
each case in  Dollars  in  immediately  available  funds.  All  payments  by the
Borrower  hereunder  and  under any of the other  Loan  Documents  shall be made
without setoff or counterclaim  and free and clear of and without  deduction for
any taxes, levies,  imposts,  duties,  charges, fees, deductions,  withholdings,
compulsory  loans,  restrictions  or  conditions  of any nature now or hereafter
imposed or levied by any  jurisdiction or any political  subdivision  thereof or
taxing or other  authority  therein  unless the  Borrower is compelled by law to
make such deduction or  withholding.  If any such obligation is imposed upon the
Borrower with respect to any amount  payable by it hereunder or under any of the
other Loan Documents, the Borrower will pay to the Administrative Agent, for the
account of the Lenders or (as the case may be) the Administrative  Agent, on the
date on which such amount is due and payable  hereunder or under such other Loan
Document,  such additional amount in Dollars as shall be necessary to enable the
Lenders or the  Administrative  Agent to receive  the same net amount  which the
Lenders or the Administrative  Agent would have received on such due date had no
such  obligation  been imposed  upon the  Borrower.  The  Borrower  will deliver
promptly to the  Administrative  Agent  certificates or other valid vouchers for
all taxes or other  charges  deducted from or paid with respect to payments made
by the Borrower  hereunder or under such other Loan Document.  The Borrower may,
within ninety (90) days of the imposition of any such  obligation by any Lender,
by notice in writing to the  Administrative  Agent and such Lender,  (a) require
such Lender that  imposed  such  obligation  to  cooperate  with the Borrower in
obtaining an Eligible  Assignee  satisfactory to the  Administrative  Agent as a
replacement  bank  for such  Lender  and in  assigning  such  Lender's  interest
hereunder  and under its Note to such  Eligible  Assignee  subject to the terms,
conditions,  and procedures of Section 17, or (b) repay all amounts owed to such
Lender,  terminate  such  Lender's  Commitments  and reduce the aggregate of the
Commitments  under the Credit Agreement by a corresponding  amount.  Each Lender
that is not  incorporated  or organized  under the laws of the United  States of
America or a state thereof or the District of Columbia agrees that, on an annual
basis,  it will deliver to the Borrower  and the  Administrative  Agent two duly
completed copies of United States Internal Revenue Service Form W-8BEN or W-8ECI
or successor  applicable form, as the case may be,  certifying in each case that
such Lender is entitled to receive  payments under this Credit Agreement and the
Note  payable to it,  without  deduction  or  withholding  of any United  States
federal  income  taxes.  Notwithstanding  anything  in this  Section  4.4 to the
contrary,  the  Borrower  shall not be  required to pay any  additional  amounts
related to the  deduction or  withholding  of any United States  federal  income
taxes  pursuant  to this  Section 4.4 to any Lender that (i) is not, on the date
this Credit Agreement is executed by such Lender,  either (x) entitled to submit
United States  Internal  Revenue  Service Form W-8BEN or W-8ECI or any successor
applicable form, as the case may be, certifying in each case that such Lender is
entitled to receive payments under this Credit Agreement and the Note payable to
it,  without  deduction or withholding of any United States federal income taxes
or (y) a U.S.  person (as such term is defined  in  Section  7701(a)(30)  of the
Code), or (ii) has failed to submit any form or certificate that it was required

                                      -29-

to file pursuant to this Section 4.4 and entitled to file under  applicable law,
or (iii) is no longer entitled to submit United States Internal  Revenue Service
Form W-8BEN or W-8ECI or  successor  applicable  form,  as the case may be, as a
result of any change in  circumstances  other than a change in  applicable  law,
regulation or treaty or in any official application or interpretation thereof.

         Section 4.5.  Computations.  All computations of interest on Eurodollar
                       -------------
Rate Loans,  the  Facility Fee and the Letter of Credit Fees shall be based on a
360 day year and paid for the actual number of days elapsed. All computations of
interest  on Base Rate Loans  shall be based on a 365/366  day year and paid for
the actual number of days  elapsed.  Except as otherwise  specifically  provided
herein,  whenever a payment  hereunder or under any of the other Loan  Documents
becomes due on a day that is not a Business  Day,  the due date for such payment
shall be extended to the next succeeding Business Day, and interest shall accrue
during such extension.  The outstanding  amount of the Loans as reflected on the
Note Records from time to time shall be considered conclusive and binding absent
manifest  mathematical  error on the Borrower unless within thirty (30) Business
Days  after  receipt  of any  notice by the  Administrative  Agent or any of the
Lenders of such outstanding amount, the Borrower shall notify the Administrative
Agent or such Lender to the contrary.

         Section 4.6.  Inability to Determine  Eurodollar Rate. In the event the
                       ----------------------------------------
Administrative Agent shall determine that adequate and reasonable methods do not
exist for  ascertaining  the Eurodollar Rate that would otherwise  determine the
rate of interest to be applicable during any Interest Period, the Administrative
Agent  shall  forthwith  give  notice  of such  determination  (which  shall  be
conclusive  and  binding  on the  Borrower)  to the  Borrower  at least  one (1)
Business Day before the first day of such Interest  Period.  In such event,  (a)
any Loan Request or  Continuation  Request with respect to Eurodollar Rate Loans
shall  be  automatically  withdrawn,  (b) the  Borrower  and the  Lenders  shall
negotiate  in good  faith to  agree on an  alternative  interest  rate  which is
reasonably  equivalent to the Eurodollar Rate; provided that if the Borrower and
the Lenders are unable to agree on such  alternative  interest rate prior to the
last day of the then current  Interest  Period,  each  Eurodollar Rate Loan then
outstanding  will as of the last day of the then  current  Interest  Period bear
interest  at a per annum rate equal to the Base Rate in effect from time to time
payable in arrears on the last day of each fiscal  quarter of the  Borrower  and
(c) the  obligations  of the Lenders to make  additional  Eurodollar  Rate Loans
shall  be  suspended  until  the   Administrative   Agent  determines  that  the
circumstances  giving rise to such  suspension  no longer  exist,  whereupon the
Administrative Agent shall so notify the Borrower and the Lenders.

         Section 4.7.  Illegality.  Notwithstanding any other provisions herein,
                       -----------
if any introduction of or change in any law, regulation,  treaty or directive or
in the  interpretation  or  application  thereof shall make it unlawful,  or any
central bank or other governmental authority having jurisdiction over any Lender
or its  Eurodollar  Lending  Office shall  assert that it is unlawful,  for such
Lender or its  Eurodollar  Lending  Office to make or  maintain  Loans that bear
interest  calculated by reference to the Eurodollar  Rate, (a) such Lender shall
forthwith give notice by telefax of such  circumstances,  confirmed in a writing
delivered to the Borrower by courier or postal  service  (which  notice shall be
withdrawn by such Lender when such Lender  shall  reasonably  determine  that it
shall no longer be illegal for such Lender or its  Eurodollar  Lending Office to
make or  maintain  such  Loans),  (b) the  commitment  of such Lender to make or
maintain  Eurodollar  Rate  Loans  shall  forthwith  be  cancelled  and (c) such
Lender's  Eurodollar  Rate Loans then

                                      -30-

outstanding,  if any, shall be converted  automatically  on the next  succeeding
last day of each Interest Period applicable to such Loans or within such earlier
period as may be  required  by law to Loans  which bear  interest at a per annum
rate equal to an alternative interest rate which is reasonably equivalent to the
Eurodollar Rate upon which the Administrative  Agent and the Lenders may in good
faith agree;  provided  that if the Borrower and the Lenders are unable to agree
on such  alternative  interest  rate,  such Loans,  shall bear interest at a per
annum rate equal to the Base Rate in effect from time to time payable in arrears
on the last day of each fiscal  quarter of the  Borrower.  The  Borrower  agrees
promptly to pay the  Administrative  Agent for the account of each Lender,  upon
demand  by  the  Administrative  Agent  in  accordance  with  Section  4.3,  any
additional amounts necessary to compensate the Lenders for any costs incurred by
the  Lenders in making any  conversion  in  accordance  with this  Section  4.7,
including  any  interest  or fees  payable  by the  Lenders  to lenders of funds
obtained  by them in order to make or maintain  their Loans (the  Administrative
Agent's  written  notice of such costs,  as  certified  to the  Borrower,  to be
conclusive absent manifest error).

         Section 4.8.  Additional  Costs,  Etc. If any present or future, or any
                       ------------------------
change in any  present or future,  applicable  law,  which  expression,  as used
herein, includes statutes,  rules and regulations thereunder and interpretations
thereof by any competent court or by any  governmental or other  regulatory body
or official charged with the  administration or the  interpretation  thereof and
requests, directives,  instructions and notices at any time or from time to time
hereafter  made upon or  otherwise  issued to any Lender by any central  bank or
other fiscal,  monetary or other  authority  (whether or not having the force of
law), shall:

         (a) subject any Lender to any tax, levy,  impost,  duty,  charge,  fee,
deduction or  withholding  of any nature with respect to this Credit  Agreement,
the other Loan Documents, any Letters of Credit, such Lender's Commitment or the
Loans  advanced by such  Lender  (other than taxes based upon or measured by the
income or profits of such Lender), or

         (b)  materially  change the basis of  taxation  (except  for changes in
taxes on income or profits) of payments to any Lender of the principal of or the
interest on any Loans or any other  amounts  payable to such  Lender  under this
Credit Agreement or the other Loan Documents, or

         (c) impose or increase or render  applicable  (other than to the extent
specifically  provided  for  elsewhere  in this  Credit  Agreement)  any special
deposit, reserve,  assessment,  liquidity, or other similar requirements against
assets  held  by,  or  deposits  in or for the  account  of,  or  loans  by,  or
commitments of, or letters of credit issued by, an office of any Lender, or

         (d) impose on any  Lender any other  conditions  or  requirements  with
respect to this  Credit  Agreement,  the other Loan  Documents,  any  Letters of
Credit, the Loans, such Lender's Commitment or any class of loans or commitments
of which any of the Loans or such Lender's Commitment forms a part;

and the result of any of the foregoing is

             (i) to increase the cost to any Lender of making, funding, issuing,
          renewing,  extending or maintaining the Loans, any Letter of Credit or
          such Lender's Commitment, or

                                      -31-

             (ii) to reduce the amount of  principal,  interest or other amounts
          payable  to  such  Lender   hereunder  on  account  of  such  Lender's
          Commitment, the Loans or any Letter of Credit, or

             (iii) to require  such  Lender to make any payment or to forego any
          interest or Reimbursement  Obligation or other sum payable  hereunder,
          the amount of which  payment or  foregone  interest  or  Reimbursement
          Obligation or other sum is calculated by reference to the gross amount
          of any sum  receivable  or deemed  received  by such  Lender  from the
          Borrower hereunder,

then, and in each such case, the Borrower will, upon written demand made by such
Lender at any time and from time to time and as often as the  occasion  therefor
may arise,  pay to such Lender such additional  amounts as will be sufficient to
compensate such Lender for such additional cost, reduction,  payment or foregone
interest or Reimbursement  Obligation or other sum (after such Lender shall have
allocated  the same  fairly  and  equitably  among  all  customers  of any class
generally  affected  thereby);  provided that in the event that such  additional
cost, reduction,  payment, or foregone interest or Reimbursement  Obligations or
other  sum  which was  incurred  by such  Lender  is  subsequently  returned  or
reimbursed to such Lender, such Lender shall return or reimburse to the Borrower
any additional  amount paid pursuant to this Section 4.8 by the Borrower to such
Lender  with  respect  thereto.  In the event that any of the  foregoing  events
occur,  each Lender will use its reasonable  efforts to take such actions as are
reasonably  feasible and  available  to such Lender to decrease  the  additional
costs payable  hereunder;  provided that no Lender shall be required to transfer
any  activities  related to this  Agreement  to any  jurisdiction  in which such
Lender does not at such time regularly conduct ordinary banking operations or to
a jurisdiction  which  otherwise will be  disadvantageous  to such Lender.  Such
Lender  shall  give the  Borrower  written  notice  of any  event  causing  such
additional  cost,  reduction,  payment or  foregone  interest  or  Reimbursement
Obligation  or other sum within ninety (90) days of the  occurrence  thereof and
the Borrower  shall not be liable for any such costs  incurred prior to the date
which is ninety (90) days prior to the date of such notice.

         Section 4.9.  Certificate.  A certificate  setting forth any additional
                       ------------
amounts payable  pursuant to Sections 4.7 and 4.8 and the changes as a result of
which such amounts are due and the computations in reasonable detail pursuant to
which such amounts  were  calculated,  submitted by any Lender to the  Borrower,
shall be conclusive  absent  manifest  error.  Upon delivery of a notice to such
Lender no more than thirty (30) Business Days after receipt of such certificate,
the  Borrower  shall have  reasonable  opportunity  to review and  discuss  such
computations with a responsible officer at such Lender.

         Section 4.10. Capital Adequacy. If any present or future, or any change
                       -----------------
in any present or future, law, governmental rule, regulation,  policy, guideline
or  directive  (whether  or not having  the force of law) or the  interpretation
thereof  by a court or  governmental  authority  with  appropriate  jurisdiction
affects  the amount of capital  required or  expected  to be  maintained  by any
Lender or any  corporation  controlling  such Lender and such Lender  determines
that the amount of capital  required to be maintained by it or such  corporation
is increased by or based upon the existence of its  Commitment or the Loans made
pursuant  hereto,  then such Lender may notify the Borrower of such fact. To the
extent that the costs of such increased  capital  requirements are not reflected
in the rates of interest payable  hereunder,  the Borrower and such

                                      -32-

Lender shall thereafter  attempt to negotiate in good faith,  within thirty (30)
days of the day on which  the  Borrower  receives  such  notice,  an  adjustment
payable hereunder that will adequately  compensate such Lender in light of these
circumstances.  If the  Borrower  and such  Lender  are  unable to agree to such
adjustment  within  thirty (30) days of the date on which the Borrower  receives
such notice,  then  commencing  on the date of such notice (but not earlier than
the effective date of any such increased capital requirement),  the fees payable
hereunder  shall  increase by an amount that will, in such  Lender's  reasonable
determination,  provide adequate  compensation to such Lender, such amount to be
conclusive and binding on the Borrower, absent manifest error. Each Lender shall
allocate  such  cost  increases  among  its  customers  in good  faith and on an
equitable basis.

         Section 4.11.  Interest on Overdue Amounts.  Overdue  principal and (to
                        ----------------------------
the extent  permitted  by  applicable  law)  interest on the Loans and all other
overdue amounts payable hereunder or under any of the other Loan Documents shall
bear interest  compounded  daily and payable on demand at a rate per annum which
is two  percent  (2%) above the per annum  interest  rate  otherwise  applicable
thereto,  until  such  amount  shall be paid in full  (after  as well as  before
judgment).

         Section 4.12.  Payment Date Adjustment for  Non-Business  Days.  Unless
                        ------------------------------------------------
otherwise explicitly set forth herein, if any payment hereunder becomes due on a
day which is not a Business  Day, the due date of such payment shall be extended
to the next  succeeding  Business  Day,  and  such  extension  of time  shall be
included in computing interest and fees in connection with such payment.

         Section 5. REPRESENTATIONS AND WARRANTIES.  The Borrower represents and
                    -------------------------------
warrants to the Lenders and the Administrative Agent as follows:

         Section 5.1.  Corporate Authority.
                       --------------------

         (a) Incorporation; Good Standing. Each of the Borrower and its Material
             -----------------------------
Subsidiaries (i) is a corporation  duly organized,  validly existing and in good
standing  under the laws of its state of  incorporation,  (ii) has all requisite
corporate  power and  authority and legal right to own and operate its property,
to lease the  property it operates as lessee and to conduct its  business as now
conducted  and as  presently  contemplated,  and (iii) is in good  standing as a
foreign  corporation and is duly authorized to do business in each  jurisdiction
where  such  qualification  is  necessary  except  where (x) a failure  to be so
qualified would not have a materially adverse effect on the business,  assets or
financial   condition   of  the  Borrower  or  the  Borrower  and  its  Material
Subsidiaries,  taken  as a whole,  or the  Borrower's  ability  to  perform  the
Obligations or (y) the Borrower or such Subsidiary has applied for qualification
to do business in such jurisdiction and such application is pending.

         (b)  Authorization.  The  execution,  delivery and  performance of this
              --------------
Credit  Agreement and the other Loan Documents to which the Borrower is or is to
become a party and the  transactions  contemplated  hereby and  thereby  (i) are
within the corporate  authority and legal right of the Borrower,  (ii) have been
duly authorized by all necessary  corporate  proceedings,  (iii) do not conflict
with or result in any breach or contravention of any provision of law,  statute,
rule or  regulation  to which the  Borrower is subject or any  judgment,  order,
writ, injunction,  license or permit applicable to the Borrower which would have
a materially  adverse effect on the business,

                                      -33-

assets or  financial  condition of the Borrower or the Borrower and its Material
Subsidiaries,  taken as a whole and (iv) do not conflict  with any  provision of
the corporate charter or bylaws of, or any agreement or other instrument binding
upon, the Borrower.

         (c) Enforceability. The execution and delivery of this Credit Agreement
             ---------------
and the other Loan  Documents  to which the  Borrower is or is to become a party
will result in valid and legally binding obligations of the Borrower enforceable
against it in accordance  with the respective  terms and  provisions  hereof and
thereof,  except  as  enforceability  is  limited  by  bankruptcy,   insolvency,
reorganization,  moratorium or other laws relating to or affecting generally the
enforcement of creditors'  rights and except to the extent that  availability of
the  remedy of  specific  performance  or  injunctive  relief is  subject to the
discretion of the court before which any proceeding therefor may be brought.

         Section  5.2.  Governmental  Approvals.  The  execution,  delivery  and
                        ------------------------
performance  by the  Borrower  of  this  Credit  Agreement  and the  other  Loan
Documents to which the Borrower is or is to become a party and the  transactions
contemplated  hereby  and  thereby do not  require  the  Borrower  to obtain the
approval  or  consent  of, to make a filing  with,  or to  perform or obtain the
performance  of any other act by or in  respect  of any  governmental  agency or
authority other than those already obtained or performed.

         Section 5.3.  Title to Properties;  Leases.  Other than as noted on the
                       -----------------------------
audited  consolidated  financial statements of the Borrower and its Subsidiaries
as at the Balance Sheet Date, the Borrower and its  Subsidiaries  own all of the
assets  reflected  in the  consolidated  balance  sheet of the  Borrower and its
Subsidiaries  as at the Balance  Sheet Date or acquired  since that date (except
property  and assets sold or  otherwise  disposed of in the  ordinary  course of
business  since  that date and  except  for  defects  of title to  certain  real
property  which do not  materially  impair  the  value or  usefulness  thereof),
subject to no rights of others,  including any  mortgages,  leases,  conditional
sales  agreements,  title  retention  agreements,  liens or other  encumbrances,
except  for liens  permitted  pursuant  to Section  7.2.  The  Borrower  and its
Material Subsidiaries enjoy peaceful and undisturbed possession under all leases
under which they are operating, and all said leases are valid and subsisting and
in full force and effect except to the extent that the failure to enjoy peaceful
and  undisturbed  possession  of such  lease or the  failure of such lease to be
valid,  subsisting and in full force and effect does not have a material adverse
effect on the assets,  financial  condition  or business of the Borrower and its
Material Subsidiaries, taken as a whole.

         Section 5.4. Financial Statements.  There has been furnished to each of
                      ---------------------
the Lenders a consolidated balance sheet of the Borrower and its Subsidiaries as
at the  Balance  Sheet  Date,  and related  consolidated  statements  of income,
retained  earnings  and cash flow for the fiscal year then ended,  certified  by
Arthur Andersen LLP, the Borrower's  independent certified public accountants as
of such date.  There has also been furnished to each of the Lenders an unaudited
consolidated balance sheet of the Borrower and its Subsidiaries as at the end of
the fiscal quarter ending March 31, 2002, and the related consolidated statement
of  income  and  consolidated  statement  of cash  flow for the  portion  of the
Borrower's  fiscal year then  elapsed,  all in reasonable  detail.  Such balance
sheets and  statements  of  income,  retained  earnings  and cash flow have been
prepared  in  accordance   with   Generally   Accepted   Accounting   Principles
consistently  applied  and are  correct  and  complete  and fairly  present  the
financial  condition  of the Borrower  and its  Subsidiaries  as at the close of
business on the date thereof and the consolidated  results of

                                      -34-


operations for the fiscal period then ended. There are no contingent liabilities
of the  Borrower  or any of its  Subsidiaries  as of each  such  date  involving
material  amounts,  known  to the  officers  of  the  Borrower,  required  to be
disclosed in accordance with Generally  Accepted  Accounting  Principles and not
disclosed in said balance sheet and the related notes thereto.

         Section 5.5. No Material  Changes,  Etc.  Since the Balance  Sheet Date
                      ---------------------------
there has occurred no Material Adverse Change.

         Section 5.6. Franchises, Patents, Copyrights, Etc. Each of the Borrower
                      -------------------------------------
and its  Subsidiaries,  respectively,  possesses or has a valid right to use all
material franchises,  patents,  copyrights,  inventions,  technology,  trademark
registrations,  trademarks,  trade names,  trade  secrets,  service  marks,  FCC
Licenses,  other  licenses and permits,  and rights in respect of the  foregoing
and, to the best of its knowledge,  patent and trademark applications and rights
in respect thereto (collectively,  the "Proprietary  Rights"),  adequate for the
conduct of its business  substantially  as now conducted  without known conflict
with any rights of others which could reasonably be expected to affect or impair
in a material  manner the  business or assets of the  Borrower  and its Material
Subsidiaries,  taken as a whole. Except as disclosed in the financial statements
referred to in Section 5.4 hereof,  the Borrower is not aware of any existing or
threatened  infringement or  misappropriation  of (a) any Proprietary  Rights of
others by the Borrower or any of its Subsidiaries or (b) any Proprietary  Rights
of the  Borrower or any of its  Subsidiaries  by others,  in any way which could
reasonably be expected to materially  adversely  affect the business,  assets or
condition,   financial   or   otherwise,   of  the  Borrower  and  its  Material
Subsidiaries, taken as a whole.

         Section 5.7. No Litigation. There are no actions, suits, proceedings or
                      --------------
investigations of any kind pending or, to the Borrower's  knowledge,  threatened
against the Borrower or any of its  Subsidiaries  before any court,  tribunal or
administrative  agency or board that,  if adversely  determined  are  reasonably
likely to, in the aggregate, materially adversely affect the properties, assets,
financial  condition or business of the Borrower and its Material  Subsidiaries,
taken as a whole,  or  materially  impair  the  right  of the  Borrower  and its
Material  Subsidiaries,  taken as a whole, to carry on business substantially as
now conducted by them,  or result in any  substantial  liability not  adequately
covered by insurance,  or for which adequate  reserves are not maintained on the
consolidated  balance sheet of the Borrower,  or which  question the validity of
this Credit Agreement or any of the other Loan Documents, or any action taken or
to be taken pursuant hereto or thereto. There are no final judgments against the
Borrower  or  any  of  its  Subsidiaries  that,  with  other  outstanding  final
judgments,  undischarged and not covered by insurance,  exceeds in the aggregate
five percent (5%) of the Consolidated Net Worth of the Borrower.

         Section 5.8. No Materially Adverse Contracts, Etc. Neither the Borrower
                      -------------------------------------
nor any of its Subsidiaries is subject to any charter,  corporate or other legal
restriction,  or any judgment, decree, order, rule or regulation that has or, to
the Borrower's knowledge, is expected in the future to have a materially adverse
effect on the  business,  assets or financial  condition of the Borrower and its
Material  Subsidiaries,  taken as a whole.  Neither the  Borrower nor any of its
Subsidiaries  is a party  to any  contract  or  agreement  that  has or,  to the
Borrower's  knowledge,  is expected, in the judgment of the Borrower's officers,
to have any  materially  adverse  effect on the business of the Borrower and its
Material Subsidiaries, taken as a whole.


                                      -35-

         Section 5.9. Compliance With Other Instruments,  Laws, Etc. Neither the
                      ----------------------------------------------
Borrower nor any of its  Subsidiaries  is in  violation of any  provision of its
charter documents, bylaws, or any agreement or instrument to which it is subject
or by  which  it or  any of its  properties  are  bound  or any  decree,  order,
judgment, statute, license, rule or regulation, in any of the foregoing cases in
a manner that is reasonably  likely to result in the  imposition of  substantial
penalties or materially and adversely affect the financial condition, properties
or business of the Borrower and its Material  Subsidiaries,  taken as a whole or
the Borrower's ability to perform the Obligations.

         Section  5.10.  Tax  Status.  The  Borrower  and,  to the  best  of the
                         ------------
Borrower's  knowledge,  its Subsidiaries  have (a) made or filed all federal and
state  income and all other  material  tax  returns,  reports  and  declarations
required by any  jurisdiction  to which any of them is subject or properly filed
for and received  extensions  with respect thereto which are still in full force
and effect and which have been fully complied with in all material respects, (b)
paid  all  taxes  and  other  governmental  assessments  and  charges  shown  or
determined to be due on such  returns,  reports and  declarations,  except those
being contested in good faith by appropriate  proceedings and for which adequate
reserves,  to the extent required by Generally Accepted  Accounting  Principles,
have been  established  and (c) set aside on their books  provisions  reasonably
adequate for the payment of all  estimated  taxes for periods  subsequent to the
periods  to which such  returns,  reports or  declarations  apply.  There are no
unpaid taxes in any material amount claimed to be due by the taxing authority of
any jurisdiction, and the officers of the Borrower know of no basis for any such
claim.

         Section 5.11.  No Event of Default.  No Default or Event of Default has
                        --------------------
occurred and is continuing.

         Section 5.12.  Holding Company and Investment Company Acts. Neither the
                        --------------------------------------------
Borrower nor any of its  Subsidiaries is a "holding  company",  or a "subsidiary
company" of a "holding company",  or an "affiliate" of a "holding  company",  as
such terms are defined in the Public Utility Holding Company Act of 1935; nor is
it a "registered investment company", or an "affiliated company" or a "principal
underwriter" of a "registered  investment company", as such terms are defined in
the Investment Company Act of 1940.

         Section   5.13.   Certain   Transactions.   Except  for  arm's   length
                           -----------------------
transactions  pursuant to which the  Borrower  makes  payments  in the  ordinary
course of business upon terms no less  favorable  than the Borrower could obtain
from third parties and transactions  disclosed in the Borrower's Form 10-K filed
with the Securities and Exchange  Commission for its fiscal year ending December
31, 2001, none of the officers, directors or other key employees of the Borrower
or any of its Material Subsidiaries is presently a party to any transaction with
the  Borrower or any of its  Material  Subsidiaries  (other than for services as
employees,  officers and directors),  including any contract, agreement or other
arrangement  providing for the  furnishing  of services to or by,  providing for
rental of real or personal property to or from, or otherwise  requiring payments
to or from any officer,  director or such key  employee or, to the  knowledge of
the Borrower, any corporation,  partnership,  trust or other entity in which any
officer,  director, or any such key employee has a substantial interest or is an
officer, director, trustee or partner.

                                      -36-

         Section 5.14.  ERISA Compliance.
                        -----------------

         (a) In General.  To the  Borrower's  knowledge,  the  Borrower  and its
             -----------
Subsidiaries have complied in all material respects with provisions of the Code,
to the extent applicable,  and of ERISA relevant to the Borrower's Pension Plans
(as  defined  in  Section  3(2) of  ERISA),  including  the  provisions  thereof
respecting  funding  requirements  for, and the  termination  of, such plans and
respecting prohibited transactions thereunder, and the funding of any Guaranteed
Pension Plan complies with the minimum  funding  standards of Section 412 of the
Code.

         (b) Guaranteed Pension Plans. Each contribution  required to be made to
             -------------------------
a Guaranteed  Pension Plan,  whether required to be made to avoid the incurrence
of an accumulated funding  deficiency,  the notice or lien provisions of Section
302(f) of ERISA, or otherwise, has been timely made. No waiver of an accumulated
funding  deficiency or extension of amortization  periods has been received with
respect to any  Guaranteed  Pension  Plan.  No liability to the PBGC (other than
required insurance  premiums,  all of which have been paid) has been incurred by
the Borrowers or any ERISA Affiliate with respect to any Guaranteed Pension Plan
and  there  has not been any  ERISA  Reportable  Event,  or any  other  event or
condition  which  presents  a material  risk of  termination  of any  Guaranteed
Pension  Plan by the PBGC.  Based on the  latest  valuation  of each  Guaranteed
Pension Plan (which in each case  occurred  within  twelve months of the date of
this representation),  and except as disclosed in Section 5.14 of the Disclosure
Schedule, the current value of all accrued benefits under each of such plans did
not,  as of the latest  valuation  date,  exceed the then  current  value of the
assets of such plans allocable to such accrued benefits based upon the actuarial
methods and assumptions used for such plans.

         (c) Multiemployer  Plans.  Neither the Borrower nor any ERISA Affiliate
             ---------------------
has incurred any  material  liability  (including  secondary  liability)  to any
Multiemployer  Plan as a result of a complete  or partial  withdrawal  from such
Multiemployer  Plan  under  Section  4201 of ERISA  or as a result  of a sale of
assets  described in Section  4204 of ERISA.  Neither the Borrower nor any ERISA
Affiliate has been notified that any Multiemployer  Plan is in reorganization or
insolvent  under and within the meaning of Section 4241 or Section 4245 of ERISA
or that any Multiemployer Plan intends to terminate or has been terminated under
Section 4041A of ERISA.

         Section 5.15.  Purpose Credit.
                        ---------------

         (a) The Borrower has not engaged principally or as one of its important
activities in the business of extending  credit for the purpose of  "purchasing"
or "carrying" any "margin  stock" within the respective  meanings of each of the
quoted terms under Regulation U of the Board of Governors of the Federal Reserve
System.

         (b) The Borrower shall not,  directly or indirectly,  apply any part of
the  proceeds  of the  Notes  for  the  purpose  of or in  connection  with  the
Borrower's broker-dealer  activities, if any, within the meaning of Regulation T
of the Federal  Reserve Board (Title 12, Part 220, Code of Federal  Regulations,
as amended) or any published regulations, interpretations or rulings thereunder.

         (c) The  issuance  of the Notes  and the  application  of the  proceeds
thereof by the Borrower will not contravene  Regulation X of the Federal Reserve
Board  (Title 12,  Part 224,

                                      -37-

Code  of  Federal  Regulations,   as  amended)  or  any  published  regulations,
interpretations or rulings thereunder.

         Section 5.16.  Environmental Compliance.
                        -------------------------

         (a) The Borrower has no actual  knowledge that any operator of the Real
Estate has  violated,  or is alleged to have  violated,  any  judgment,  decree,
order,  law,  license,  rule or regulation  pertaining to environmental  matters
(hereinafter  "Environmental  Laws"),  which  violation  would  have a  material
adverse effect on the environment or the business, assets or financial condition
of the Borrower or any of its Material Subsidiaries, taken as a whole.

         (b) Neither  the  Borrower  nor any of its  Material  Subsidiaries  has
received notice from any third party including, without limitation, any federal,
state  or  local  governmental  authority,  (i)  that  any one of them  has been
identified by the United States  Environmental  Protection  Agency  ("EPA") as a
potentially  responsible party under the Comprehensive  Environmental  Response,
Compensation  and  Liability  Act of 1980 with  respect to a site  listed on the
National Priorities List, 40 C.F.R. Part 300 Appendix B; (ii) that any hazardous
waste,  as defined by 42 U.S.C.  Section  6903(5),  any hazardous  substances as
defined by 42 U.S.C.  Section 9601(14),  any pollutant or contaminant as defined
by 42  U.S.C.  Section  9601(33)  and any  toxic  substances,  oil or  hazardous
materials or other chemicals or substances  regulated by any Environmental  Laws
(hereinafter  "Hazardous  Substances")  which  any  one of them  has  generated,
transported or disposed of has been found at any site at which a federal,  state
or local  agency or other third  party has  conducted  or has  ordered  that the
Borrower or any of its Material  Subsidiaries conduct a remedial  investigation,
removal or other response  action  pursuant to any  Environmental  Law; or (iii)
that it is or shall be a named  party to any  claim,  action,  cause of  action,
complaint,  or legal or administrative  proceeding (in each case,  contingent or
otherwise)  arising  out of any third  party's  incurrence  of costs,  expenses,
losses or damages  of any kind  whatsoever  in  connection  with the  release of
Hazardous Substances.

         (c) Neither  the  Borrower  nor any of its  Material  Subsidiaries  are
subject  to any  applicable  environmental  law  requiring  the  performance  of
Hazardous  Substances  site  assessments,  or  the  removal  or  remediation  of
Hazardous Substances,  or the giving of notice to any governmental agency or the
recording or delivery to other Persons of an environmental  disclosure  document
or statement  by virtue of the  transactions  set forth herein and  contemplated
hereby or the effectiveness of any other transactions contemplated hereby.

         Section  5.17.  Compliance  With  Fair  Labor  Standards  Act.  To  the
                         ----------------------------------------------
Borrower's  knowledge,  the Borrower  has at all times  operated its business in
compliance  with all  applicable  provisions of the Fair Labor  Standards Act of
1938 (29 U.S.C.  Sections 106 and 207) except to the extent that the  Borrower's
failure  to comply  therewith  would not have a material  adverse  affect on the
business,  assets or condition,  financial or otherwise, of the Borrower and its
Material  Subsidiaries,  taken as a whole. To the Borrower's knowledge,  none of
the Borrower's inventory has been produced by employees who are or were employed
in violation of the minimum wage or maximum hour  provisions  of such Act or any
regulations thereunder.

         Section 5.18.  Subsidiaries.  Section 5.18 of the  Disclosure  Schedule
                        -------------
identifies with respect to each Material Subsidiary the jurisdiction in which it
is organized and the approximate  percentage of

                                      -38-

the  outstanding  Voting Stock of that Subsidiary held either by the Borrower or
another  Subsidiary.  All of the  outstanding  capital  stock  of each  Material
Subsidiary   has  been  duly   authorized  and  issued  and  is  fully-paid  and
non-assessable;  and,  except as  indicated  in Section  5.18 of the  Disclosure
Schedule, free and clear of any pledge, charge, lien, security interest or other
encumbrance or restriction on transfer.

         Section  5.19.  Solvency.  The  Borrower,  both before and after giving
                         ---------
effect to the  transactions  contemplated by this Credit Agreement and the other
Loan  Documents (a) is solvent,  (b) has assets having a fair value in excess of
its  liabilities,  (c) has  assets  having a fair  value in excess of the amount
required to pay its  liabilities on existing debts as such debts become absolute
and matured,  and (d) has,  and expects to continue to have,  access to adequate
capital  for the conduct of its  business  and the ability to pay its debts from
time to time incurred in  connection  with the operation of its business as such
debts mature.

         Section 5.20. Transactions with Affiliates.
                       -----------------------------

         (a)  Section  5.20(a) of the  Disclosure  Schedule  identifies  (i) all
Funded Debt of the  Borrower or of any of its  Subsidiaries  owing to any Parent
Affiliated Company on or as of the Closing Date, and (ii) all Investments in the
Borrower or in any of its Subsidiaries  owned,  held or controlled by any Parent
Affiliated Company on or as of the Closing Date.

         (b)  Section  5.20(b) of the  Disclosure  Schedule  identifies  (i) all
Funded Debt of each Parent  Affiliated  Company  owing to the Borrower or any of
its  Subsidiaries on or as of the Closing Date, and (ii) all Investments in each
Parent  Affiliated  Company owned,  held or controlled by the Borrower or any of
its Subsidiaries on or as of the Closing Date.

         Section 5.21.  Disclosure.  No  representation  or warranty made by the
                        -----------
Borrower in any of the Loan  Documents or in any other  document  furnished from
time to time in connection herewith or therewith, contains any misrepresentation
of a material  fact or omits to state any  material  fact  necessary to make the
statements  herein or  therein  not  misleading.  There is no fact  known to the
Borrower that materially adversely affects, or that might reasonably be expected
to materially adversely affect, the business, property or financial condition of
the Borrower and its Material Subsidiaries on a consolidated basis.

         Section  6.  AFFIRMATIVE  COVENANTS  OF  THE  BORROWER.   The  Borrower
                      ------------------------------------------
covenants and agrees that, so long as any Loan, Unpaid Reimbursement Obligation,
Letter of Credit or Note is outstanding or any Lender has any obligation to make
any Loans or the  Administrative  Agent has any  obligation to issue,  extend or
renew any Letters of Credit:

         Section 6.1.  Punctual  Payment.  The Borrower will duly and punctually
                       ------------------
pay  or  cause  to be  paid  the  principal  and  interest  on  the  Loans,  all
Reimbursement  Obligations,  the Letter of Credit Fees and the Facility Fee, all
in accordance with the terms of this Credit Agreement and the Notes.

         Section 6.2.  Maintenance  of Office.  The Borrower  will  maintain its
                       -----------------------
chief  executive  office in  Chicago,  Illinois,  or at such other  place in the
United States of America as the Borrower shall  designate upon written notice to
the Administrative  Agent,  where notices,  presentations and demands to or upon
the Borrower in respect of the Loan Documents may be given or made.


                                      -38-

         Section 6.3.  Records and  Accounts.  The Borrower  will (a) keep,  and
                       ----------------------
cause each of its  Subsidiaries to keep, true and accurate  records and books of
account in which full,  true and correct entries will be made in accordance with
Generally Accepted Accounting  Principles and (b) maintain adequate accounts and
reserves  for all  taxes  (including  income  taxes),  depreciation,  depletion,
obsolescence  and  amortization  of its  properties  and the  properties  of its
Subsidiaries, contingencies, and other reserves.

         Section 6.4. Financial  Statements,  Certificates and Information.  The
                      -----------------------------------------------------
Borrower will deliver to each of the Lenders or, with respect to subsection  (f)
of  this  Section  6.4  only,  make  available  to each  of the  Lenders  at the
Borrower's principal place of business:

         (a) as soon as practicable, but in any event not later than ninety (90)
days after the end of each fiscal year of the Borrower, the consolidated balance
sheet of the Borrower and its  Subsidiaries  as at the end of such year, and the
related consolidated  statements of income, retained earnings and cash flows for
such year,  each setting forth in comparative  form the figures for the previous
fiscal year and all such  consolidated  statements to be in  reasonable  detail,
prepared in  accordance  with  Generally  Accepted  Accounting  Principles,  and
certified  without material  qualification  as to any  circumstance  which could
reasonably be expected to have a material adverse effect on the Borrower and its
Material  Subsidiaries,  taken  as a  whole,  by  PricewaterhouseCoopers  LLP or
independent public accountants of nationally recognized standing selected by the
Borrower  and  acceptable  to the  Required  Lenders,  together  with a  written
statement from such accountants to the effect that they have read a copy of this
Credit  Agreement,  and  that,  in  making  the  examination  necessary  to said
certification,  they have  obtained  no  knowledge  of any  Default  or Event of
Default,  or, if such  accountants  shall have  obtained  knowledge  of any then
existing  Default or Event of Default they shall  disclose in such statement any
such Default or Event of Default;  provided that such  accountants  shall not be
liable to the Lenders for failure to obtain knowledge of any Default or Event of
Default;

         (b) as soon as practicable,  but in any event not later than forty-five
(45) days after the end of each of the first  three  fiscal  quarters in each of
the Borrower's fiscal years, copies of the unaudited  consolidated balance sheet
of the  Borrower and its  Subsidiaries  as at the end of such  quarter,  and the
related  consolidated  statements  of income and cash flows for such quarter and
the  portion  of  the  Borrower's  fiscal  year  then  elapsed,   together  with
comparative consolidated figures for the same periods of the preceding year, all
in  reasonable  detail  and  prepared  in  accordance  with  Generally  Accepted
Accounting  Principles  and  accompanied  by  a  certificate  of  the  principal
financial officer of the Borrower stating that the information contained in such
financial  statements is correct and complete and fairly  presents the financial
position  of the  Borrower  and its  Subsidiaries  on the date  thereof  and the
results of their operations for the periods covered thereby (subject to year-end
adjustments);

         (c)  simultaneously  with  the  delivery  of the  financial  statements
referred  to in  subsections  (a) and (b) above,  a statement  certified  by the
principal financial officer of the Borrower in substantially the form of Exhibit
C hereto and (i) setting forth in reasonable detail  computations  (based on the
four-fiscal quarter period then ended) evidencing  compliance with the covenants
contained in Sections  8.1,  8.2 and 8.3 as at the end of the period  covered by
such  statements or during such period as may be required,  and (if  applicable)
reconciliations to reflect changes in Generally Accepted  Accounting  Principles
since the Balance Sheet Date and (ii)

                                      -40-

identifying  in  reasonable  detail (A) all Funded Debt of the  Borrower and its
Subsidiaries  owing to any Parent Affiliated  Company and (B) all Investments by
the Borrower and its Subsidiaries in any of the Parent Affiliated Companies,  in
each  case as at the  end of the  period  covered  by  such  statements  (each a
"Compliance Certificate");

         (d) contemporaneously with the filing or mailing thereof, copies of all
material of a financial nature filed with the Securities and Exchange Commission
or sent to the  stockholders  of the  Borrower  or any holder of the  Borrower's
Funded Debt;

         (e) promptly  upon request by the  Administrative  Agent or any Lender,
all detailed audits or reports  submitted to the Borrower by independent  public
accountants in connection  with any annual or interim audits of the books of the
Borrower or any Material Subsidiary; and

         (f) from time to time upon request by the  Administrative  Agent or any
Lender,   such  other  financial  data  and  information   (including,   without
limitation,  accountants management letters and such other information regarding
the business and affairs and  condition,  financial and other,  of the Borrower,
its Subsidiaries and their respective properties) as the Administrative Agent or
any Lender may reasonably request, subject to the confidentiality provisions set
forth in Section 27 hereof.

         Section  6.5.  Corporate  Existence;  Maintenance  of  Properties.  The
                        ---------------------------------------------------
Borrower  will do or cause to be done all things  necessary to preserve and keep
in full force and effect its corporate  existence,  material rights,  franchises
and Proprietary  Rights and those of its Subsidiaries  except to the extent that
the  Borrower's  failure to do so could not  reasonably  be  expected  to have a
materially adverse effect on the assets,  financial condition or business of the
Borrower and its Material Subsidiaries,  taken as a whole. It (a) will cause all
of its material  properties and those of its Subsidiaries  used or useful in the
conduct of its business or the business of its Subsidiaries to be maintained and
kept in  good  condition,  repair  and  working  order  and  supplied  with  all
reasonably  necessary  equipment,  (b)  will  cause  to be made  all  reasonably
necessary repairs, renewals, replacements, betterments and improvements thereof,
all as in the  judgment of the  Borrower  may be  necessary so that the business
carried on in connection therewith may be properly and advantageously  conducted
at all times, and (c) will, and will cause each of its Material Subsidiaries to,
continue to engage  primarily  in the  businesses  now  conducted by them and in
related businesses;  provided that nothing in this Section 6.5 shall prevent the
Borrower  from  discontinuing  the  operation  and  maintenance  of  any  of its
properties or those of its Material  Subsidiaries if such  discontinuance is, in
the sole  judgment  of the  Borrower,  desirable  in the conduct of its or their
business and does not in the aggregate  materially adversely affect the business
of the Borrower and its Material Subsidiaries on a consolidated basis.

         Section 6.6.  Insurance.  The Borrower will, and will cause each of its
                       ----------
Subsidiaries  to,  maintain  with  financially  sound  and  reputable   insurers
insurance  with respect to its insurable  properties  and business  against such
casualties  and  contingencies  as  shall  be in  accordance  with  the  general
practices of  businesses  engaged in similar  activities  in similar  geographic
areas and in amounts,  containing such terms, in such forms and for such periods
as  may  be  reasonably  satisfactory  to the  Administrative  Agent;  provided,
however,  that the  Borrower and any  Subsidiary  may  self-insure  for physical
damage to automobiles,  welfare benefits and against liability to workers in any
state or jurisdiction,  or may effect worker's  compensation  insurance  therein
through an

                                      -41-


insurance fund operated by such state or  jurisdiction;  and provided,  further,
that notwithstanding  anything to the contrary contained herein, the Borrower or
such Subsidiary will keep its assets which are of an insurable character insured
by financially  sound and reputable  insurers  against loss or damage by fire or
explosion in amounts  sufficient to prevent the Borrower or such Subsidiary from
becoming a co-insurer and not in any event less than eighty percent (80%) of the
full insurable value of the property insured.

         Section 6.7. Taxes;  Etc. The Borrower will, and will cause each of its
                      ------------
Subsidiaries to, (a) duly pay and discharge, or cause to be paid and discharged,
before  the same  shall  become  overdue or (b)  properly  file for and  receive
extensions for such payment and duly pay and discharge,  or cause to be paid and
discharged,  within such  extension  period,  all taxes,  assessments  and other
governmental  charges  (other than  taxes,  assessments  and other  governmental
charges imposed by foreign jurisdictions,  including states in which neither the
Borrower  nor  any  of its  Subsidiaries  conducts  a  material  portion  of its
business,  that in the  aggregate  are not material to the business or assets of
the Borrower on an individual basis or of the Borrower and its Subsidiaries on a
consolidated  basis)  imposed  upon  it  and  its  real  properties,  sales  and
activities,  or any part thereof,  or upon the income or profits  therefrom,  as
well as all claims for labor, materials, or supplies that if unpaid might by law
become a lien or charge upon any of its  property;  provided  that any such tax,
assessment,  charge,  levy or claim need not be paid if the  validity  or amount
thereof shall  currently be contested in good faith by  appropriate  proceedings
and if the  Borrower  or such  Subsidiary  shall  have set  aside  on its  books
adequate  reserves with respect thereto;  and provided further that the Borrower
and each  Subsidiary  of the  Borrower  will pay all  such  taxes,  assessments,
charges,  levies or claims  forthwith  upon the  commencement  of proceedings to
foreclose any lien that may have attached as security therefor.

         Section 6.8.  Inspection of Properties  and Books.  The Borrower  shall
                       ------------------------------------
permit the  Lenders,  through the  Administrative  Agent or any of the  Lenders'
other designated representatives,  to visit and inspect any of the properties of
the Borrower or any of its Subsidiaries,  to examine the books of account of the
Borrower  and  its  Subsidiaries  (and  to  make  copies  thereof  and  extracts
therefrom),  and to discuss the  affairs,  finances and accounts of the Borrower
and its  Subsidiaries  with,  and to be advised as to the same by, its and their
officers,  employees and independent  public accountants (such accountants being
hereby  authorized  by the  Borrower  to so  discuss  and  advise)  all at  such
reasonable  times and  intervals as the  Administrative  Agent or any Lender may
reasonably request. In connection with any such inspections or discussions,  (a)
the Borrower shall be given reasonable  notice of and shall have the right to be
present at such  inspections or discussions,  and (b) each Lender,  on behalf of
itself and any  representative  authorized by it, agrees to treat all non-public
information as confidential  information  pursuant to Section 27 and to take all
reasonable  precautions  to prevent  such  confidential  information  from being
exposed to third parties and to those of its employees and  representatives  who
do not need to know such  confidential  information;  provided that this Section
6.8 shall not affect the disclosure by any Lender of information  required to be
disclosed to its auditors,  regulatory agencies or pursuant to subpoena or other
legal   process   or  by  virtue  of  any  other  law,   regulation,   order  or
interpretation.

         Section 6.9. Compliance with Laws,  Contracts,  Licenses,  and Permits.
                      ----------------------------------------------------------
The Borrower will, and will cause each of its Material  Subsidiaries  to, comply
with (a) the applicable laws and regulations wherever its business is conducted,
including all  Environmental  Laws which may be in effect from time to time, (b)
the  provisions of its charter  documents and by-laws,  (c) all

                                      -42-

agreements and  instruments by which it or any of its properties or business may
be bound and (d) all applicable decrees,  orders, and judgments; if in each such
case failure to comply would have a  materially  adverse  effect on the Borrower
and  its  Material  Subsidiaries,   taken  as  a  whole.  If  at  any  time  any
authorization,  consent, approval, permit or license from any officer, agency or
instrumentality  of any government  shall become  necessary or required in order
that the Borrower may fulfill any of the Obligations, the Borrower will promptly
take or cause to be taken all reasonable  steps within the power of the Borrower
to obtain such authorization,  consent,  approval, permit or license and furnish
the Lenders with evidence thereof.

         Section  6.10.  Pension  Plans.  The Borrower  and any ERISA  Affiliate
                         ---------------
shall:

         (a)  promptly  after the Borrower or any ERISA  Affiliate  knows or has
reason  to know  that any  ERISA  Reportable  Event  has  occurred,  notify  the
Administrative Agent that such ERISA Reportable Event has occurred;

         (b)  promptly  upon  request  make  available  to  each  Lender  at the
Borrower's  principal  place of business a copy of (i) any  actuarial  statement
related to any pension plan  required to be submitted  under  Section  103(d) of
ERISA or (ii) any notice,  report or demand  sent or received by a pension  plan
under Section 4065 of ERISA;

         (c)  furnish to each  Lender  forthwith,  a copy of (i) any notice of a
pension plan  termination  sent to the PBGC under  Section  4041(a) of ERISA and
(ii) any  notice,  report or demand  sent or  received  by a pension  plan under
Sections 4041, 4042, 4043, 4063, 4066 or 4068 of ERISA; and

         (d)  furnish to each  Lender a copy of any  request for waiver from the
funding  standards or extension of the amortization  periods required by Section
412 of the Code no later than the date on which the request is  submitted to the
Department of Labor or the Internal Revenue Service, as the case may be.

         Section 6.11. Further Assurances.  The Borrower will cooperate with the
                       -------------------
Lenders and the  Administrative  Agent and execute such further  instruments and
documents as the Lenders or the Administrative Agent shall reasonably request to
carry out to their  satisfaction  the  transactions  contemplated by this Credit
Agreement and the other Loan Documents.

         Section  6.12.   Notices.   The  Borrower  will  promptly   notify  the
                          --------
Administrative Agent and each of the Lenders in writing of the occurrence of any
Default or Event of  Default.  If any  Person  shall give any notice or take any
other action in respect of a claimed  default  (whether or not  constituting  an
Event of  Default)  under this  Credit  Agreement  or any other  material  note,
evidence of indebtedness, indenture or other obligation to which or with respect
to which the Borrower or any of its Subsidiaries is a party or obligor,  whether
as principal or surety, the Borrower shall forthwith give written notice thereof
to each of the  Lenders,  describing  the notice or action and the nature of the
claimed default.

         Section 6.13.  Fair Labor  Standards  Act. The Borrower  will, and will
                        ---------------------------
cause  each of its  Subsidiaries  to,  at all  times  operate  its  business  in
compliance  with all  applicable  provisions of the Fair Labor  Standards Act of
1938 (29  U.S.C.  Sections  206 and 207) if the  failure  to  comply  with  such
provisions might  reasonably be expected to have a materially  adverse affect on
the Borrower and its Subsidiaries, taken as a whole.


                                      -43-

         Section  6.14.  Environmental  Events.  The Borrower will promptly give
                         ----------------------
notice to the Administrative Agent (a) of any violation of any Environmental Law
that the Borrower or any of its Subsidiaries reports in writing or is reportable
by such Person in writing (or for which any written report  supplemental  to any
oral report is made) to any federal, state or local environmental agency and (b)
upon becoming aware thereof, of any inquiry, proceeding, investigation, or other
action, including a notice from any agency of potential environmental liability,
or any  federal,  state or local  environmental  agency  or  board,  that  might
reasonably be expected to materially  adversely affect the assets,  liabilities,
financial conditions or operations of the Borrower and its Material Subsidiaries
on a consolidated basis.

         Section 6.15.  Notification of Claims.  The Borrower will,  immediately
                        -----------------------
upon becoming aware thereof,  notify the Administrative  Agent in writing of any
uninsured  set-off,  claims  (including,   with  respect  to  the  Real  Estate,
environmental claims),  withholdings or other defenses which might reasonably be
expected  to  have a  materially  adverse  affect  on the  assets,  liabilities,
financial conditions or operations of the Borrower and its Material Subsidiaries
on a consolidated basis.

         Section  6.16.  Use of  Proceeds.  Except as and to the extent that the
                         -----------------
Borrower funds the C20 Acquisition from other sources, the Borrower will use the
proceeds of the initial  Loan made under this Credit  Agreement to pay a portion
of the purchase  price  required to be paid under the C20 Purchase  Agreement to
complete the C20  Acquisition.  Prior to the C20  Acquisition  Closing Date, the
Borrower  may,  subject  to the  other  terms  and  conditions  of  this  Credit
Agreement, borrow the initial Loan and, if the initial Loan is so borrowed, will
immediately  deposit  all  proceeds  thereof  in a  separate  account  with  the
Administrative  Agent  to be held  and  released  only in  accordance  with  the
provisions  of Section  7.10.  The  Borrower  will use the proceeds of all Loans
other than the  initial  Loan and obtain  Letters of Credit  solely for  general
corporate  purposes,  including  without  limitation  the  financing  of capital
expenditures and acquisitions and for working capital purposes.

         Section 6.17. Notice of Litigation,  Judgment and Material Events.  The
                       ----------------------------------------------------
Borrower will give notice to the Administrative  Agent in writing within fifteen
(15) days of becoming  aware of any  litigation  or  proceedings  threatened  in
writing or any pending litigation and proceedings  affecting the Borrower or any
of its  Subsidiaries  or to which the Borrower or any of its  Subsidiaries is or
becomes a party involving an uninsured  claim against the Borrower  individually
or the  Borrower  and  its  Subsidiaries  on a  consolidated  basis  that  could
reasonably be expected to have a materially  adverse  effect on the Borrower and
its  Subsidiaries  on a consolidated  basis and stating the nature and status of
such  litigation or  proceedings.  The Borrower will, and will cause each of its
Subsidiaries to, give notice to the  Administrative  Agent, in writing,  in form
and detail satisfactory to the Administrative Agent, (a) within ten (10) days of
any judgment not covered by insurance or reserves,  final or otherwise,  against
the Borrower or any of its  Subsidiaries  in an amount  which in aggregate  with
other such  judgments  against the Borrower or any of its  Subsidiaries  exceeds
five percent (5%) of the Consolidated Net Worth of the Borrower and (b) promptly
after  becoming  aware  thereof,  of the  occurrence  of any  event  that  it is
reasonable  to expect  will be  required  to be  reported  to or filed  with the
Securities and Exchange Commission.

                                      -44-

         Section 6.18. Obligations to Parent Affiliated Companies.  The Borrower
                       -------------------------------------------
will cause all Funded Debt of the Borrower and of its Subsidiaries  owing to any
Parent  Affiliated  Company existing on the Closing Date or arising from time to
time thereafter to at all times be unsecured,  and all of such Funded Debt in an
aggregate  outstanding  amount at any time in excess of $50,000,000 shall at all
times  be  subordinated  to  the  Obligations   pursuant  to  the  Subordination
Agreement.  In addition to the requirements of the foregoing  provisions of this
Section 6.18, if and to the extent that any loans,  advances or other extensions
of credit are made by any Parent  Affiliated  Company to the  Borrower or any of
its Subsidiaries prior to, on or after the Closing Date out of (whether directly
or indirectly) the proceeds of any Monetization  Transaction,  the Borrower will
cause all of the Funded Debt of the Borrower and its  Subsidiaries to the Parent
Affiliated  Companies  with  respect  to  any  such  loans,  advances  or  other
extensions of credit to be and at all times remain unsecured and subordinated to
the Obligations pursuant to the Subordination Agreement.

         Section 6.19. Certain Documents.  The Borrower will, on or prior to the
                       ------------------
C20 Acquisition Closing Date and prior to the use of any proceeds of the initial
Loan made under this Credit Agreement  (whether directly or indirectly) to pay a
portion  of the  purchase  price  required  to be paid  under  the C20  Purchase
Agreement:

         (a) deliver a certificate  of an authorized  officer of the Borrower to
the Administrative  Agent stating that the material terms and conditions of each
of the C20 Acquisition  Documents shall be in all material  respects the same as
and consistent  with the terms and conditions  contained in the form of such C20
Acquisition  Document  delivered to the Agents on or prior to the Closing  Date,
and no material provision of any such C20 Acquisition  Documents shall have been
modified  or waived by the  Borrower  in any  material  respect,  in each  case,
without the prior  written  consent of the Agents  (which  consent  shall not be
unreasonably withheld or delayed); and

         (b) with respect to each Financing Event consummated by the Borrower or
any of its Subsidiaries on or after April 1, 2002, deliver to the Administrative
Agent (i)  complete  copies of all  documents  related to such  Financing  Event
(except with  respect to  Monetization  Transactions),  certified to be true and
complete by an authorized officer of the Borrower and (ii) a summary, containing
information  reasonably  satisfactory  to  the  Administrative  Agent,  of  each
Monetization Transaction,  certified to be a reasonable summary by an authorized
officer of the Borrower.

         Section 7. CERTAIN  NEGATIVE  COVENANTS OF THE  BORROWER.  The Borrower
                    ----------------------------------------------
covenants  and  agrees  that,  so  long  as  any  Loan,   Unpaid   Reimbursement
Obligations,  Letter of  Credit or Note is  outstanding  or any  Lender  has any
obligation to make any Loans or the  Administrative  Agent has any obligation to
issue, extend or renew any Letters of Credit:

         Section 7.1.  Funded Debt.  The Borrower  will not, and will not permit
                       ------------
any of its  Subsidiaries  to incur any Funded  Debt if an Event of Default  will
occur hereunder  immediately after giving effect thereto as a consequence of the
incurrence of such Funded Debt.  The Borrower  will not incur any  obligation to
repay money borrowed in an aggregate  principal amount in excess of $150,000,000
under or in  connection  with any line of credit  having an initial or scheduled
maturity date of less than one year from the initial  borrowing  date or renewal
date therefor.


                                      -45-

         Section 7.2.  Restrictions on Liens.  The Borrower shall not, and shall
                       ----------------------
not cause or permit any of its Subsidiaries to, create, incur or permit to exist
any Liens of any kind on any  property or assets of any  character,  whether now
owned or hereafter  acquired other than the following Liens:

         (a) Liens to secure taxes,  assessments and other government charges in
respect of  obligations  not overdue or liens on properties to secure claims for
labor,  material or supplies in respect of obligations not overdue or in respect
of which the Borrower or relevant  Subsidiary shall at the time in good faith be
prosecuting an appeal or proceeding for review and in respect of which a stay of
execution  shall have been obtained  pending such appeal or review and for which
any  reserves  required  in  accordance  with  Generally   Accepted   Accounting
Principles have been established;

         (b) deposits or pledges made in connection  with, or to secure  payment
of, workmen's compensation,  unemployment  insurance,  old age pensions or other
social security obligations;

         (c) Liens on  properties  in respect of  judgments  or awards that have
been in force for less than the  applicable  period for taking an appeal so long
as  execution  is not levied  thereunder  or in respect of which the Borrower or
relevant  Subsidiary shall at the time in good faith be prosecuting an appeal or
proceeding  for review and in  respect of which a stay of  execution  shall have
been obtained pending such appeal or review and for which any reserves  required
in  accordance  with  Generally   Accepted   Accounting   Principles  have  been
established;

         (d) Liens of carriers,  warehousemen,  mechanics and  materialmen,  and
other like liens on properties in existence  less than 120 days from the date of
creation thereof in respect of obligations not overdue;


         (e)  encumbrances  consisting  of  easements,  rights  of  way,  zoning
restrictions,  restrictions  on  the  use  of  real  property  and  defects  and
irregularities  in the title thereto,  landlord's or lessor's liens under leases
to which the Borrower or relevant  Subsidiary is a party,  and other minor liens
or  encumbrances  none  of  which  in the  opinion  of the  Borrower  interferes
materially with the use of the property  affected in the ordinary conduct of the
business of the Borrower or such  Subsidiary,  which defects do not individually
or in the  aggregate  have a  materially  adverse  effect on the business of the
Borrower or such Subsidiary individually or of the Borrower and its Subsidiaries
on a consolidated basis;

         (f) presently outstanding Liens listed in Section 7.2 of the Disclosure
Schedule;

         (g) Liens on  property  existing  at the time the  Borrower or relevant
Subsidiary  acquires  such  property  and not  created in  anticipation  of such
acquisition, purchase money security interests in or purchase money mortgages on
real or  personal  property  acquired  or  constructed  after the date hereof to
secure Funded Debt permitted to be incurred hereunder and incurred in connection
with the  acquisition or  construction of such property at the time of or within
270 days following the acquisition of such property, which security interests or
mortgages  cover only the real or personal  property so  acquired,  and Liens on
existing  properties  or assets to secure  Funded Debt  permitted  hereunder and
incurred for improvements on such properties or assets;


                                      -46-

         (h) Liens on the  property  of a Person (i)  existing  at the time such
Person is merged into or consolidated  with the Borrower or relevant  Subsidiary
as permitted hereby or at the time of a sale, lease or other  disposition of the
properties  of a Person as an  entirety or  substantially  as an entirety to the
Borrower or relevant  Subsidiary as permitted  hereby,  (ii) resulting from such
merger,  consolidation,  sale,  lease or  disposition  by  virtue of any Lien on
property  granted by the Borrower or relevant  Subsidiary  as  permitted  hereby
prior to such merger,  consolidation,  sale,  lease or  disposition  (and not in
contemplation   thereof   or  in   connection   therewith)   which   applies  to
after-acquired  property  of the  Borrower  or  relevant  Subsidiary,  or  (iii)
resulting from such merger,  consolidation,  sale, lease or disposition pursuant
to a Lien or contractual  provision granted or entered into by such Person prior
to such  merger,  consolidation,  sale,  lease  or  disposition  (and not at the
request of the  Borrower or relevant  Subsidiary);  provided  that any such Lien
referred  to in clause (i) shall not apply to any  property  of the  Borrower or
relevant  Subsidiary  other than the property  subject  thereto at the time such
Person or properties  were acquired and any such Lien referred to in clause (ii)
or (iii) shall not apply to any property of the Borrower or relevant  Subsidiary
other than the property so acquired;

         (i) (i) Liens arising by reason of deposits  with, or the giving of any
form of security to, any governmental  agency or any body created or approved by
law  or  governmental  regulation,  which  Liens  (A)  are  required  by  law or
governmental regulation as a condition to the transaction of any business or the
exercise  of any  privilege,  franchise,  license  or  permit,  and (B) cover or
otherwise  attach to only such  deposits or (as the case may be) the  properties
and assets  which are the  subject of such  transaction,  privilege,  franchise,
license or permit;  and (ii) Liens in favor of any  government  or  governmental
entity  to  secure  partial,  progress,  advance  or  other  payments,  or other
obligations,  pursuant to any contract or statute or to secure any  indebtedness
incurred for the purpose of financing all or any part of the costs of acquiring,
constructing  or  improving  the  property  subject to such  Liens,  which Liens
referred to in this clause (ii) cover or otherwise attach to only the properties
or  assets  which are the  subject  of such  contract  or  statute  or which are
acquired,  constructed  or  improved  with the  proceeds  of such  indebtedness;
provided,  however, that if the Borrower and its Subsidiaries incur or otherwise
permit to exist Liens under  clauses (i) and (ii) above,  and the net book value
of all of the property and assets  (whether  tangible or intangible)  subject to
all of such Liens shall at any time exceed $25,000,000,  then the net book value
of all of such  property  and  assets  in  excess of  $25,000,000  (the  "Excess
Amount")  shall be included  in the  calculation  of  compliance  under  Section
7.2(n);

         (j) Liens on any Equity  Interests  owned by the  Borrower or by any of
its  Subsidiaries in any Person or Persons that are not directly,  or indirectly
through one or more intermediaries,  Controlled by the Borrower or by any of its
Subsidiaries;  provided,  however,  that  such  Liens (i) are  incurred  only in
connection with any Monetization Transaction, (ii) such Liens cover or otherwise
attach to only the  specific  Equity  Interests  which are the  subject  of such
Monetization  Transaction  (and rights and  interests  usually  and  customarily
related  thereto,  e.g.,  proceeds  and  dividends)  and do not  cover any other
property or assets owned or acquired by the Borrower or any of its Subsidiaries,
and (iii) such Liens remain in existence  only during the  continuation  of such
Monetization Transaction;

         (k) Liens incurred on deposits made in the ordinary  course of business
to secure  surety  and appeal  bonds,  leases,  return-on-money  bonds and other
similar  obligations  (exclusive  of  obligations  for the  payment of  borrowed
money);

                                      -47-

         (l) Liens  upon or in any  property  or  assets  (other  than  spectrum
licenses) now owned or from time to time  hereafter  acquired by the Borrower or
any of its  Subsidiaries  related in any way to the ownership by the Borrower or
by any of its Subsidiaries of wireless telecommunications towers, including, but
not limited to, tower structures,  land on which towers are located,  other real
estate  associated  with such  towers,  leases  for  towers or for tower  sites,
subleases,  licenses,  co-location  arrangements,  easements  and all other real
property and other tangible or intangible assets related thereto;

         (m) any extension,  renewal or replacement  (or successive  extensions,
renewals  or  replacements)  in whole or in part of any Lien  referred to in the
foregoing  clauses (a)  through  (l),  inclusive;  provided,  however,  that the
principal  amount secured thereby shall not exceed the principal  amount secured
thereby at the time of such  extension,  renewal or  replacement,  and that such
extension,  renewal  or  replacement  shall be  limited  to all or a part of the
property  which secured the  obligation so extended,  renewed or replaced  (plus
improvements to such property);and

         (n) any other Liens on the  property and assets of the Borrower and its
Subsidiaries  so long as the net book  value of all of the  property  and assets
subject to all of such other Liens,  including any Excess Amount  referred to in
Section  7.2(i),  together  with the net book value of all of the  property  and
assets subject to Sale and Leaseback  Transactions  permitted by Section 7.8(f),
shall not at any time in the aggregate  exceed ten percent (10%) of Consolidated
Net Assets.

         Section  7.3.   Limitation  on  Sales,   Consolidation,   Merger,  Etc.
                         -------------------------------------------------------

         (a) The Borrower will not, and will not permit any of its  Subsidiaries
to  complete a Sale if a Default or Event of  Default  is  continuing,  or would
result immediately after giving effect to such Sale.

         (b)  Nothing  contained  in this  Credit  Agreement  shall  prevent any
consolidation  of the  Borrower  with or merger of the  Borrower  into any other
Person or Persons  (whether or not affiliated with the Borrower),  or successive
consolidations  or mergers to which the Borrower or its  successor or successors
shall be a party or parties,  provided  that, the Borrower  hereby  consents and
agrees that, upon any such consolidation or merger, the due and punctual payment
of the  principal  of and  interest on all of the Loans and the due and punctual
performance  and  observance  of all  of the  covenants,  conditions  and  other
obligations  of the Credit  Agreement and the Notes to be performed and observed
by the Borrower, shall be expressly assumed in an agreement satisfactory in form
and  substance  to the  Administrative  Agent  and  the  Lenders,  executed  and
delivered to the Administrative Agent by the Person formed by such consolidation
or merger,  provided,  further,  that the Person formed by such consolidation or
merger shall be a Person  organized  and  existing  under the laws of the United
States,  any state thereof or the District of Columbia,  and provided,  further,
that  immediately  before and after giving effect to any such  transaction  (and
treating  any Funded Debt or Sale and  Leaseback  Transaction  which  becomes an
obligation of the resulting or surviving  Person as a result of such transaction
as having  been  incurred  or  entered  into by such  Person at the time of such
transaction),  no Default or Event of Default shall exist. Unless the conditions
prescribed above in this Section 7.3(b) are satisfied,  no such consolidation or
merger shall be permitted.

                                      -48-

         (c)  Nothing  contained  in this  Credit  Agreement  shall  prevent any
consolidation  of  any  Subsidiary  of  the  Borrower  with,  or  merger  of any
Subsidiary  of the Borrower  into,  any other Person or Persons  (whether or not
affiliated with the Borrower), or successive  consolidations or mergers to which
any such  Subsidiary of the Borrower or its  successor or successors  shall be a
party or parties,  provided that,  immediately before and after giving effect to
any such  transaction,  no Default or Event of Default  shall exist.  Unless the
condition  prescribed  above  in  this  Section  7.3(c)  is  satisfied,  no such
consolidation or merger shall be permitted.

         Section 7.4. Federal  Regulations.  The Borrower will not, and will not
                      ---------------------
permit  any  of  its  Subsidiaries  to,  engage,  principally  or as  one of its
important  activities,  in the business of  extending  credit for the purpose of
"purchasing" or "carrying" any "margin stock" within the respective  meanings of
each of the quoted  terms under  Regulation  U of the Board of  Governors of the
Federal Reserve System.  The Borrower will not, directly or indirectly,  use any
part of the proceeds of any Loans for  "purchasing"  or  "carrying"  any "margin
stock"  within  the  respective  meanings  of each  of the  quoted  terms  under
Regulation U of the Board of Governors of the Federal  Reserve System or for any
purpose that violates, or that would be inconsistent with, the provisions of the
Regulations of such Board of Governors.

         Section 7.5.  Restrictions on Ability to Repay Loans. The Borrower will
                       ---------------------------------------
not, and will not permit any of its Material  Subsidiaries  to, become or remain
subject to any  restriction  which  could  reasonably  be expected to impair the
Borrower's  ability  to  repay  in full its  Obligations  hereunder,  including,
without limitation, any restriction which would prohibit the distribution by any
Material Subsidiary to the Borrower of proceeds from Asset Sales.

         Section 7.6. Employee Benefit Plans. Neither the Borrower nor any ERISA
                      -----------------------
Affiliate will:

         (a)  engage in any  "prohibited  transaction"  within  the  meaning  of
Section  406 of ERISA or Section  4975 of the Code  which  could  reasonably  be
expected  to result  in a  material  liability  for the  Borrower  or any of its
Subsidiaries; or

         (b) permit any Guaranteed  Pension Plan (other than those maintained by
Persons  that  become  ERISA  Affiliates  after  the  Closing  Date) to incur an
"accumulated  funding  deficiency",  as such term is defined  in Section  302 of
ERISA,  in excess  of  $500,000,  whether  or not such  deficiency  is or may be
waived; or

         (c) fail to  contribute  to any  Guaranteed  Pension  Plan to an extent
which, or terminate any Guaranteed  Pension Plan in a manner which, could result
in the  imposition of a lien or encumbrance on the assets of the Borrower or any
of its Subsidiaries pursuant to Section 302(f) or Section 4068 of ERISA; or

         (d)  permit or take any  action  which  would  result in the  aggregate
benefit  liabilities  (with  the  meaning  of  Section  4001  of  ERISA)  of all
Guaranteed  Pension  Plans (other than those  maintained  by Persons that become
ERISA  Affiliates  after the Closing Date)  exceeding the value of the aggregate
assets of such Plans by more than  $500,000,  disregarding  for this purpose the
benefit liabilities and assets of any such Plan with assets in excess of benefit
liabilities.

         Section 7.7. Compliance with Environmental Laws. Except as permitted by
                      -----------------------------------
any  applicable  Environmental  Laws, the Borrower will not, and will not permit
any of its  Subsidiaries  to,  (a) use

                                      -49-

any of the Real Estate or any  portion  thereof  for the  handling,  processing,
storage or disposal of Hazardous  Substances,  (b) cause or permit to be located
on any of the Real  Estate any  underground  tank or other  underground  storage
receptacle for Hazardous  Substances,  (c) generate any Hazardous  Substances on
any of the Real  Estate,  (d) conduct any activity at any Real Estate or use any
Real Estate in any manner which is likely to cause a release  (i.e.,  releasing,
spilling, leaking, pumping, pouring, emitting, emptying, discharging, injecting,
escaping,  leaching,  disposing or dumping) of Hazardous  Substances on, upon or
into the Real Estate or (e) otherwise conduct any activity at any Real Estate or
use any Real Estate in any manner that might  reasonably  be expected to violate
any   Environmental   Law  or  bring  such  Real  Estate  in  violation  of  any
Environmental  Law if any of the foregoing would be reasonably  likely to have a
material adverse effect on the Borrower and its Subsidiaries, taken as a whole.

         Section 7.8.  Limitation on Sale and Leaseback.  The Borrower will not,
                       ---------------------------------
and will not cause or permit any of its Subsidiaries to, enter into any Sale and
Leaseback  Transactions,  other than the  following:

         (a) any Sale and Leaseback  Transaction entered into by the Borrower to
finance  the  payment of all or any part of the  purchase  price of such real or
personal property  (including any improvements to existing property) acquired or
constructed  after the date  hereof at the time of or within 270 days  following
the acquisition or construction of such property,  which covers only the real or
personal property so acquired and does not in the aggregate exceed the lesser of
the purchase price or the fair market value of such property;

         (b) any Sale and Leaseback  Transaction  involving property of a Person
existing  at the time  such  Person  is  merged  into or  consolidated  with the
Borrower  as  permitted  hereby  or at  the  time  of a  sale,  lease  or  other
disposition of the properties of a Person as an entirety or  substantially as an
entirety to the Borrower as permitted hereby;

         (c) any Sale and Leaseback Transaction the net proceeds of which are at
least  equal  to the  fair  value  (as  determined  by the  Borrower's  Board of
Directors)  of  the  property   leased  pursuant  to  such  Sale  and  Leaseback
Transaction,  so long as within 270 days of the effective  date of such Sale and
Leaseback Transaction, the Borrower applies (or irrevocably commits to an escrow
account for the purpose or purposes  hereinafter  mentioned)  an amount equal to
the net  proceeds  of such Sale and  Leaseback  Transaction  to  either  (x) the
purchase of other property having a fair market value at least equal to the fair
market value of the property  leased in such Sale and Leaseback  Transaction and
having a similar utility and function or (y) the repayment of Funded Debt of the
Borrower or the  retirement  of preferred  stock of any  Subsidiary  (other than
preferred  stock  owned  by the  Borrower  or any  Subsidiary)  and if any  such
repayment  is applied to the Loans  under this Credit  Agreement  then upon such
repayment the Total Commitment shall be automatically reduced by an amount equal
to the amount of such repayment;

         (d) any Sale and Leaseback Transaction involving any property or assets
(other than spectrum licenses) now owned or from time to time hereafter acquired
by the Borrower or any of its  Subsidiaries  related in any way to the ownership
by the  Borrower or by any of its  Subsidiaries  of wireless  telecommunications
towers,  including,  but not limited to, tower structures,  land on which towers
are located, other real estate associated with such towers, leases for towers or
for

                                      -50-

tower sites, subleases,  licenses,  collocation arrangements,  easements and all
other real property and other tangible or intangible assets related thereto;

         (e) any Sale and Leaseback Transaction involving the extension, renewal
or replacement (or successive extensions,  renewals or replacements) in whole or
in part of a lease pursuant to a Sale and Leaseback  Transaction  referred to in
the foregoing clauses (a) through (d), inclusive;  provided,  however,  that any
such lease,  extension,  renewal or  replacement  shall be limited to all or any
part of the same  property  leased  under  the  lease so  extended,  renewed  or
replaced (plus improvements to such property); and

         (f) any other Sale and Leaseback  Transactions  so long as the net book
value of all of the  property  and assets  subject to all of such other Sale and
Leaseback Transactions,  together with the net book value of all of the property
and assets subject to Liens permitted by Section  7.2(n),  shall not at any time
in the aggregate exceed more than ten percent (10%) of Consolidated Net Assets.

         Section 7.9. Certain Funded Debt. The Borrower will not incur or permit
                      --------------------
to exist  Funded Debt of the Borrower or any of its  Subsidiaries  to any Parent
Affiliated  Company  unless (a) such Funded Debt shall at all times be unsecured
and (b) all of such Funded Debt in an aggregate  principal amount outstanding at
any time in excess of  $50,000,000  shall at all  times be  subordinated  to the
Obligations  pursuant  to  the  Subordination  Agreement.  In  addition  to  the
requirements  of the  foregoing  provisions  of this  Section 7.9, if and to the
extent that any loans,  advances or other  extensions  of credit are made by any
Parent Affiliated  Company to the Borrower or any of its Subsidiaries  prior to,
on or after  the  Closing  Date out of  (whether  directly  or  indirectly)  the
proceeds of any Monetization Transaction, all of the Funded Debt of the Borrower
and its  Subsidiaries  to such Parent  Affiliated  Company  with respect to such
loans,  advances or other  extensions of credit shall be and at all times remain
unsecured and  subordinated  to the  Obligations  pursuant to the  Subordination
Agreement.

         Section  7.10.  Proceeds of Initial  Loan.  Except as and to the extent
                         --------------------------
that the Borrower funds the C20  Acquisition  from other  sources,  the Borrower
will use the proceeds of the initial Loan (and,  if  applicable,  withdraw  such
proceeds from deposit in a separate account with the Administrative  Agent) only
for the purpose of paying a portion of the  purchase  price  required to be paid
under the C20 Purchase Agreement on the C20 Acquisition Closing Date. All of the
proceeds of the initial Loan shall be  deposited in a separate  account with the
Administrative  Agent, shall be continuously held in such separate account,  and
shall not be  withdrawn  from such  account or used for any  purpose  unless and
until each of the conditions precedent set forth below are satisfied:

         (a) the Borrower  shall have received for its own account,  on or prior
to the C20  Acquisition  Closing Date,  Net  Financing  Proceeds in an aggregate
amount of not less than  $264,000,000  from any one or more of a combination  of
the following Financing Events: (i) Monetization Transactions; (ii) the issuance
of  Equity  Interests  of the  Borrower  or an  equity  rights  offering  by the
Borrower; (iii) the issuance of Subordinated Debt by the Borrower; or (iv) other
financing  transactions entered into by the Borrower and approved by the Agents.
Each of such Financing  Events shall have been completed on terms and conditions
reasonably satisfactory to the Agents;

                                      -51-

         (b) in addition to the Net Financing Proceeds required by paragraph (a)
of this Section 7.10, the Borrower shall also have received for its own account,
on or prior to the C20 Acquisition  Closing Date, Net Financing Proceeds (in the
minimum aggregate amount specified in the next sentence) from the issue and sale
by the Borrower of its senior  unsecured  notes under Rule 144A or by means of a
registered  public  offering  or a  private  placement  of such  notes.  The Net
Financing Proceeds so received shall be in the minimum aggregate amount equal to
(i)  $250,000,000  minus (ii) the aggregate amount of all increases in the Total
Commitment  which shall have become  effective  pursuant to Section 17.10 (a) of
this Credit  Agreement on or prior to the C20  Acquisition  Closing  Date.  Such
senior  unsecured notes shall have been issued and sold by the Borrower on terms
and conditions reasonably satisfactory to the Agents;

         (c) there shall have been  delivered  to the Agents  true,  correct and
complete  copies of each of the documents (or, in the case of each  Monetization
Transaction, summaries of such documents) pursuant to which each Financing Event
described in  paragraphs  (a) and (b) above has been  completed,  and all of the
material terms and conditions of such documents shall be reasonably satisfactory
to the Agents;  all material  conditions  precedent to the  consummation  of the
Financing  Events pursuant to such documents shall have been satisfied;  and the
Financing  Events pursuant to such documents shall have been  consummated in all
material  respects in accordance  with the material  terms and conditions of the
applicable documents and all applicable laws;

         (d) arrangements  reasonably satisfactory to the Agents shall have been
made by the Borrower for the simultaneous completion of the C20 Acquisition upon
the terms contained in the C20 Purchase  Agreement and in all material  respects
in accordance  with the C20 Acquisition  Documents and all applicable  laws; and
all material conditions precedent to the Borrower's obligation to consummate the
C20 Acquisition,  as set forth in the C20 Acquisition  Documents shall have been
satisfied, and not waived in any material respect, except with the prior consent
of the Agents (which consent shall not be unreasonably  withheld or delayed), to
the reasonable satisfaction of the Agents; and

         (e) the  Borrower  shall  have  delivered  to the  Agents an  officer's
certificate  dated as of the C20  Acquisition  Closing Date stating that each of
the  matters  described  in  paragraphs  (a),  (b),  (c) and (d)  above has been
completed to the satisfaction of the Borrower.

         Section 8. FINANCIAL COVENANTS OF THE BORROWER.  The Borrower covenants
                    ------------------------------------
and agrees that, so long as any Loan, Unpaid Reimbursement Obligation, Letter of
Credit or Note is outstanding or any Lender has any obligation to make any Loans
or the  Administrative  Agent has any  obligation to issue,  extend or renew any
Letters of Credit:

         Section 8.1. Funded Debt to Capitalization Ratio. The Borrower will not
                      ------------------------------------
permit its Funded Debt to  Capitalization  Ratio for any  Measurement  Period to
exceed sixty-five percent (65%).

         Section 8.2.  Interest Coverage Ratio. The Borrower will not permit its
                       ------------------------
Interest Coverage Ratio for any Measurement Period to be less than 3.00 to 1.00.

                                      -52-

         Section 8.3. Funded Debt to EBITDA Ratio.  The Borrower will not permit
                      ----------------------------
its Funded  Debt to EBITDA  Ratio for any  Measurement  Period to exceed 4.00 to
1.00.

         Section 9. CLOSING CONDITIONS. The obligation of any Lender to make the
                    -------------------
initial  Loan and of the  Administrative  Agent to issue any initial  Letters of
Credit  shall  be  subject  to  the  satisfaction  of the  following  conditions
precedent:

         Section 9.1.  Corporate Action.  All corporate action necessary for the
                       -----------------
valid  execution,  delivery  and  performance  by the  Borrower  of this  Credit
Agreement  and the other Loan  Documents  to which it is or is to become a party
shall have been duly and effectively taken, and evidence thereof satisfactory to
the Lenders shall have been provided to each of the Lenders.

         Section 9.2. Loan Documents. Each of the Loan Documents shall have been
                      ---------------
duly executed and delivered by the respective parties thereto,  shall be in full
force and effect and shall be in form and substance  satisfactory to each of the
Lenders.  Each Lender  shall have  received a fully  executed  copy of each such
document.

         Section 9.3. Opinion of Borrower's  Legal Counsel.  Each of the Lenders
                      -------------------------------------
and the  Administrative  Agent  shall have  received  from legal  counsel to the
Borrower,  a favorable opinion  addressed to the Lenders and the  Administrative
Agent dated the Closing Date, in substantially the form of Exhibit D hereto.

         Section 9.4. Certified Copies of Charter Documents. Each of the Lenders
                      --------------------------------------
shall have received from the Borrower a copy of the Borrower's charter or other
incorporation documents and by-laws certified by the Secretary of the Borrower
to be true and complete as of the Closing Date.

         Section 9.5.  Incumbency  Certificate.  Each of the Lenders  shall have
                       ------------------------
received  from the Borrower an incumbency  certificate,  dated the Closing Date,
signed by a duly  authorized  officer of the  Borrower,  and giving the name and
bearing a specimen signature of each individual who shall be authorized:  (a) to
sign, in the name and on behalf of the Borrower,  each of the Loan  Documents to
which it is or is to  become a party;  (b) to make Loan  Requests,  Continuation
Requests and to apply for Letters of Credit; and (c) to give notices and to take
other action on its behalf under the Loan Documents.

         Section 9.6. Good Standing Certificates. The Administrative Agent shall
                      ---------------------------
have received,  with a copy for each Lender, a certificate from the Secretary of
State, or other appropriate authority of such jurisdiction,  evidencing the good
standing  of the  Borrower in the  jurisdiction  of its  incorporation  and each
jurisdiction  in which a failure to so qualify  could have a materially  adverse
effect on the business, operations,  property or financial or other condition of
the Borrower.

         Section 9.7.  Payment of Fees.  The Borrower shall have paid (a) to the
                       ----------------
Agents the Closing  Fees and all other fees and  expenses  which the Borrower is
obligated  to pay on the  Closing  Date  pursuant  to the  Fee  Letters  and the
Commitment Letter (as defined in the Fee Letters) and (b) to the  Administrative
Agent's Special Counsel all invoiced  amounts which the Borrower is obligated to
pay pursuant to Section 13(c).

                                      -53-

         Section 9.8. Receipt of Financial Statements. Each of the Lenders shall
                      --------------------------------
have  received  from the  Borrower a certified  copy of the  Borrower's  audited
consolidated  balance sheet and the related  consolidated  statements of income,
retained  earnings and cash flows for the Borrower's  fiscal year ended December
31, 2001,  each setting forth in  comparative  form the figures for the previous
fiscal year and all such  consolidated  statements to be in  reasonable  detail.
Each of the Lenders  shall also have  received  from the  Borrower a copy of the
Borrower's  unaudited   consolidated  balance  sheet  and  related  consolidated
statements  of income and cash flows for the  Borrower's  fiscal  quarter  ended
March 31, 2002,  together  with  comparative  consolidated  figures for the same
period of the preceding year.

         Section 9.9. Financial Arrangements.
                      ----------------------

         (a) The  Borrower  shall have Debt  Ratings  that are not below BBB+ by
Standard and Poor's and not below Baa1 by Moody's.

         (b) Each of the Agents  shall  have  received  from the  Borrower a Pro
Forma consolidated  balance sheet of the Borrower and its Subsidiaries as of the
date of the most recent fiscal quarter-end  financial statements of the Borrower
and its  Subsidiaries  required to be delivered  pursuant to Section 6.4,  which
consolidated  balance sheet shall give Pro Forma effect to the C20  Acquisition,
all Funded Debt  incurred or to be in incurred  in  connection  therewith  or in
anticipation  thereof and all other transactions in connection  therewith.  Such
Pro  Forma  consolidated  balance  sheet  shall  demonstrate  to the  reasonable
satisfaction  of the Agents that,  as of the date of such Pro Forma  financials,
the Borrower  shall be in  compliance  with all of the covenants and other terms
and provisions contained in all indentures, credit agreements or other documents
pursuant  to which  Funded  Debt has been or will be issued or  governed  and by
which the Borrower or any of its  Subsidiaries  shall be bound after the Closing
Date.

         (c) All Funded Debt owing by the Borrower or any of its Subsidiaries to
any Parent  Affiliated  Company existing on the Closing Date shall be unsecured,
and  all  such  Funded  Debt in an  aggregate  principal  amount  in  excess  of
$50,000,000   existing  on  the  Closing  Date  shall  be  subordinated  to  the
Obligations  pursuant  to  the  Subordination  Agreement.  In  addition  to  the
foregoing  requirement,  if and to the extent that any loans,  advances or other
extensions  of credit  existing on the Closing Date have been made by any Parent
Affiliated  Company to the Borrower or any of its  Subsidiaries  out of (whether
directly or indirectly) the proceeds of any  Monetization  Transactions,  all of
such Funded Debt shall be unsecured and subordinated to the Obligations pursuant
to the Subordination Agreement.

         (d) No material change shall have been made to the corporate or capital
structure of the Borrower and its  Subsidiaries as disclosed to the Agents prior
to the Closing  Date.  Other than existing  Funded Debt  disclosed to the Agents
prior to the Closing Date and  reflected in the Pro Forma  balance  sheet of the
Borrower and its Subsidiaries delivered pursuant to Section 9.9(b), the Borrower
and its Subsidiaries shall have no other Funded Debt on the Closing Date.

         Section 9.10. C20 Acquisition.  The Agents shall have received from the
                       ----------------
Borrower  a fully  executed  copy of the C20  Purchase  Agreement,  in form  and
substance  reasonably  acceptable  to the  Agents,  certified  by an  authorized
officer of the  Borrower to be true and  complete as of the  Closing  Date.  The
aggregate  principal  amount  of the  purchase  price  (determined  net of  cash

                                      -54-

included in the business acquired pursuant to the C20 Acquisition Documents) and
all related  transaction  fees payable by the Borrower and its  Subsidiaries  in
connection with the C20 Acquisition shall not exceed $635,000,000.

         Section 10. CONDITIONS TO ALL BORROWINGS.  The obligation of any Lender
                     -----------------------------
to make any Loan, and of the Administrative  Agent to issue, extend or renew any
Letter of Credit,  in each case whether on or after the Closing Date, shall also
be subject to the satisfaction of the following conditions precedent:

         Section 10.1.  Representations  True; No Event of Default.  Each of the
                        -------------------------------------------
representations  and  warranties  of  the  Borrower  contained  in  this  Credit
Agreement  or  in  any  document  or  instrument  delivered  pursuant  to  or in
connection  with this Credit  Agreement shall be true as of the date as of which
they were made and shall also be true at and as of the time of the making of the
Loan or the  issuance,  extension or renewal of such Letter of Credit,  with the
same  effect as if made at and as of that time  (except to the extent of changes
resulting from  transactions  contemplated or permitted by this Credit Agreement
and changes  occurring in the ordinary  course of business that singly or in the
aggregate   are  not   materially   adverse,   and  to  the  extent   that  such
representations  and  warranties  relate  expressly  to an earlier  date) and no
Default  or  Event  of  Default  shall  have  occurred  and be  continuing.  The
Administrative Agent shall have received a certificate of the Borrower signed by
an authorized officer of the Borrower to such effect.

         Section 10.2. No Legal Impediment. No change shall have occurred in any
                       --------------------
law or regulations thereunder or interpretations  thereof that in the reasonable
opinion of any Lender would make it illegal for such Lender to make the Loans or
to participate in the issuance,  extension or renewal of any Letter of Credit or
in the reasonable opinion of the Administrative  Agent would make it illegal for
the Administrative Agent to issue, extend or renew any Letter of Credit.

         Section 10.3. Governmental Regulation.  Each Lender shall have received
                       ------------------------
such statements in substance and form reasonably  satisfactory to such Lender as
such Lender  shall  require for the purpose of  compliance  with any  applicable
regulations of the  Comptroller of the Currency or the Board of Governors of the
Federal Reserve System.

         Section 10.4. Proceedings and Documents.  All proceedings in connection
                       --------------------------
with the  transactions  contemplated by this Credit  Agreement and all documents
incident  thereto shall be  satisfactory in substance and in form to the Lenders
and to the  Administrative  Agent's  Special  Counsel,  and the Lenders and such
counsel shall have received all  information and such  counterpart  originals or
certified  or other  copies of such  documents  as the  Lenders  may  reasonably
request.

         Section 10.5. No Material Adverse Change. No Material Adverse Change
                       ---------------------------
shall have occurred since the Balance Sheet Date.

         Section 11.  EVENTS OF DEFAULT;  ACCELERATION.  If any of the following
                      ---------------------------------
events  ("Events of Default" or, if the giving of notice or the lapse of time or
both is required, then, prior to such notice or lapse of time, "Defaults") shall
occur:

         (a) the  Borrower  shall fail to pay any  principal of the Loans or any
Reimbursement  Obligation when the same shall become due and payable, whether at
the stated date of maturity or any accelerated  date of maturity or at any other
date fixed for payment;

                                      -55-


         (b) the  Borrower  shall fail to pay any  interest  on the  Loans,  any
Letter of Credit Fee, the Facility Fee or other sums due  hereunder or under any
of the  other  Loan  Documents,  on or  prior  to  the  second  day  immediately
succeeding  the day on which the same shall become due and  payable,  whether at
the stated date of maturity or any accelerated  date of maturity or at any other
date fixed for payment;

         (c) the Borrower or any Subsidiary of the Borrower shall fail to comply
with any of its covenants  contained in Sections 6.9, 6.10,  6.12,  6.15 through
6.19, inclusive, Section 7 or Section 8;

         (d) the  Borrower  fails to perform  any term,  covenant  or  agreement
contained in Section 6.4 for five (5) days after written  notice of such failure
has been given to the Borrower by the Administrative Agent or the Borrower shall
fail to perform any other term, covenant or agreement contained herein or in any
of the other Loan  Documents  (other  than  those  specified  elsewhere  in this
Section 11) for thirty (30) days after  written  notice of such failure has been
given to the Borrower by the Administrative Agent or, if such performance is not
possible  within  such  thirty  (30) day  period,  the  Borrower  shall  fail to
undertake such performance  within such thirty (30) day period and thereafter to
diligently and in good faith pursue the completion of such performance;

         (e)  any  representation  or  warranty  of the  Borrower  or any of its
Subsidiaries  in this Credit  Agreement or any of the other Loan Documents or in
any other  document or instrument  delivered  pursuant to or in connection  with
this Credit  Agreement  shall prove to have been false in any  material  respect
upon the date when made;

         (f) the  Borrower or any of its  Subsidiaries  shall (i) fail to pay at
maturity,  or within any applicable period of grace, any obligation for borrowed
money in an aggregate  amount  equal to or greater  than 2% of the  Consolidated
Capitalization  of the  Borrower  or (ii) fail to observe  or perform  any term,
covenant or agreement  relating to or contained in any  instrument  or agreement
evidencing or securing any  obligation for borrowed money which would permit the
holders thereof to accelerate such  indebtedness or results in the  acceleration
(whether by declaration or automatically) of such  indebtedness,  in either case
in an  aggregate  amount  equal  to or  greater  than  2%  of  the  Consolidated
Capitalization  of the  Borrower;

         (g) the  Borrower  or any of its  Material  Subsidiaries  shall make an
assignment  for the benefit of  creditors,  or admit in writing its inability to
pay or  generally  fail to pay its debts as they  mature or become due, or shall
petition  or  apply  for  the  appointment  of a  trustee  or  other  custodian,
liquidator or receiver of the Borrower or any of its Material Subsidiaries or of
any  substantial  part of the  assets  of the  Borrower  or any of its  Material
Subsidiaries  or shall  commence  any case or other  proceeding  relating to the
Borrower   or  any  of  its   Material   Subsidiaries   under  any   bankruptcy,
reorganization,  arrangement,  insolvency,  readjustment of debt, dissolution or
liquidation or similar law of any  jurisdiction,  now or hereafter in effect, or
shall take any action to authorize or in furtherance of any of the foregoing, or
if any such  petition  or  application  shall be filed or any such case or other
proceeding  shall be  commenced  against  the  Borrower  or any of its  Material
Subsidiaries and the Borrower or any of its Material Subsidiaries shall indicate
its approval thereof,  consent thereto or acquiescence  therein;

                                      -56-

         (h)  a  decree  or  order  is  entered  appointing  any  such  trustee,
custodian,  liquidator  or receiver or  adjudicating  the Borrower or any of its
Material Subsidiaries bankrupt or insolvent, or approving a petition in any such
case or other proceeding,  or a decree or order for relief is entered in respect
of the Borrower or any  Material  Subsidiary  of the Borrower in an  involuntary
case under federal bankruptcy laws as now or hereafter constituted;

         (i)  there  shall  remain  in  force,  undischarged,   unsatisfied  and
unstayed, for more than thirty (30) days, whether or not consecutive,  any final
judgment  against  the  Borrower  or any of its  Subsidiaries  that,  with other
outstanding final judgments,  undischarged and not covered by insurance, against
such Person(s)  exceeds in the aggregate  five percent (5%) of the  Consolidated
Net Worth of the Borrower; or

         (j) a Change in Control occurs;

then,  and in any  such  event,  so  long as the  same  may be  continuing,  the
Administrative Agent may, and upon the request of the Required Lenders shall, by
notice in writing to the Borrower declare all amounts owing with respect to this
Credit  Agreement,  the Notes,  the other Loan  Documents and all  Reimbursement
Obligations to be, and they shall thereupon  forthwith  become,  immediately due
and payable without  presentment,  demand,  protest or other notice of any kind,
all of which are hereby expressly  waived by the Borrower;  provided that in the
event of any Event of Default  specified in Section 11(g) or Section 11(h),  all
such amounts shall become immediately due and payable  automatically and without
any requirement of notice from the Administrative Agent or any Lender.

         If any one or more of the Events of Default  specified in Section 11(g)
or Section 11(h) shall occur,  any unused portion of the credit  hereunder shall
forthwith terminate and each of the Lenders shall be relieved of all obligations
to make Loans  hereunder and the  Administrative  Agent shall be relieved of all
further obligations to issue, extend or renew Letters of Credit and the Borrower
shall immediately Cash  Collateralize the Reimbursement  Obligations  related to
all Letters of Credit which are outstanding  and undrawn.  If any other Event of
Default shall have occurred and be continuing,  the  Administrative  Agent, upon
the request of the Required Lenders, shall, by notice to the Borrower, terminate
the unused  portion of the credit  hereunder,  and upon such notice  being given
such unused portion of the credit hereunder shall terminate immediately and each
of the Lenders  shall be relieved of all further  obligations  to make Loans and
the Administrative  Agent shall be relieved of all further obligations to issue,
extend or renew  Letters  of Credit  and the  Borrower  shall  immediately  Cash
Collateralize  the  Reimbursement  Obligations  related to all Letters of Credit
which are outstanding and undrawn.  If any such notice is given to the Borrower,
the  Administrative  Agent will forthwith  furnish a copy thereof to each of the
Lenders.  No termination of the credit  hereunder  shall relieve the Borrower of
any of the Obligations or any of its existing obligations to the Lenders arising
under other agreements or instruments.

         Section 12. THE AGENTS.
                     -----------

         Section 12.1. Authorization.  The Administrative Agent is authorized to
                       --------------
take  such  action on behalf of each of the  Lenders  and to  exercise  all such
powers as are hereunder and in related documents delegated to the Administrative
Agent, together with such powers as are reasonably

                                      -57-


incident  thereto;  provided  that no duties or  responsibilities  not expressly
assumed  herein  or  therein  shall  be  implied  to have  been  assumed  by the
Administrative  Agent. The relationship  among the Agents,  on the one hand, and
the Lenders,  on the other hand,  shall be that of agent and principal  only and
nothing contained in this Credit Agreement or any of the related documents shall
be construed to constitute the Agents as trustees of the Lenders.

         Section  12.2.  Employees  and  Agents.  The  Administrative  Agent may
                         -----------------------
exercise its powers and execute its duties by or through employees or agents and
shall be  entitled to take,  and to rely on,  advice of counsel  concerning  all
matters  pertaining to its rights and duties under this Credit Agreement and the
other Loan Documents.  The Administrative Agent may utilize the services of such
Persons  as the  Administrative  Agent in its  sole  discretion  may  reasonably
determine,  and upon the occurrence and during the  continuation of a Default or
an Event of Default,  all reasonable fees and expenses of any such Persons shall
be paid by the Borrower.

         Section  12.3.  No  Liability.  None of the  Agents  nor  any of  their
                         --------------
respective shareholders,  directors,  officers or employees nor any other Person
assisting  them in their  duties  nor any agent or  employee  thereof,  shall be
liable for any waiver, consent or approval given or any action taken, or omitted
to be taken,  in good  faith by it or them  hereunder  or under any of the other
Loan Documents,  or in connection  herewith or therewith,  or be responsible for
the consequences of any oversight or error of judgment  whatsoever,  except that
the  Agents or such other  Person,  as the case may be, may be liable for losses
due to its own willful misconduct or gross negligence.

         Section 12.4. No Representations.
                       -------------------

         (a) The Agents shall not be  responsible  for the execution or validity
or  enforceability  of this Credit  Agreement,  the Notes,  any Letter of Credit
Application  or  any  instrument  at  any  time  constituting,  or  intended  to
constitute,  collateral  security  for the  Notes,  or for the value of any such
collateral security or for the validity, enforceability or collectability of any
such amounts owing with respect to the Notes, or for any recitals or statements,
warranties or representations  made herein or in any of the other Loan Documents
or in any certificate or instrument hereafter furnished to it by or on behalf of
the  Borrower,  or be bound to  ascertain  or inquire as to the  performance  or
observance of any of the terms, conditions, covenants or agreements herein or in
any instrument at any time constituting,  or intended to constitute,  collateral
security for the Notes.  The Agents shall not be bound to ascertain  whether any
notice,  consent,  waiver or request  delivered  to them by the  Borrower or any
holder of any of the Notes shall have been duly authorized or is true,  accurate
and complete.  The Agents have not made nor do they now make any representations
or  warranties,  express or  implied,  nor do they assume any  liability  to the
Lenders,  with respect to the credit  worthiness or financial  conditions of the
Borrower  or any of its  Subsidiaries.  Each  Lender  acknowledges  that it has,
independently  and without  reliance upon the Agents or the other  Lenders,  and
based upon such information and documents as it has deemed appropriate, made its
own credit analysis and decision to enter into this Credit Agreement.

         (b) For purposes of  determining  compliance  with the  conditions  set
forth in Section 9, each Lender that has executed this Credit Agreement shall be
deemed to have consented to, approved or accepted, or to be satisfied with, each
document and matter either sent, or made available,  by the Administrative Agent
or Arrangers, to such Lender for consent, approval,

                                      -58-

acceptance  or  satisfaction,  or  required  thereunder  to be  consented  to or
approved by or acceptable or satisfactory  to such Lender,  unless an officer of
the Administrative  Agent active upon the Borrower's account shall have received
notice from such Lender not less than two (2) Business Days prior to the Closing
Date specifying such Bank's objection  thereto and such objection shall not have
been withdrawn by notice to the Administrative  Agent to such effect on or prior
to the Closing Date.

         Section 12.5. Payments.
                       ---------

         (a) If in the opinion of the  Administrative  Agent the distribution of
any amount  received by it in such  capacity  hereunder or under the Notes might
involve it in liability, it may refrain from making distribution until its right
to make  distribution  shall  have  been  adjudicated  by a court  of  competent
jurisdiction. If a court of competent jurisdiction shall adjudge that any amount
received  and  distributed  by the  Administrative  Agent is to be repaid,  each
Person to whom any such distribution  shall have been made shall either repay to
the Administrative Agent its proportionate share of the amount so adjudged to be
repaid or shall pay over the same in such manner and to such Persons as shall be
determined  by such  court.  With  respect  to  Obligations,  a  payment  to the
Administrative  Agent  shall be deemed to be a payment to each Lender of its pro
rata share of such payment.

         (b)  Notwithstanding  anything to the contrary contained in this Credit
Agreement  or any of the other Loan  Documents,  any  Lender  that fails to make
available  to the  Administrative  Agent its pro rata share of any Loan as, when
and to the full extent  required  by the  provisions  of this Credit  Agreement,
shall be  deemed  delinquent  (a  "Delinquent  Lender")  and  shall be  deemed a
Delinquent Lender until such time as such delinquency is satisfied. A Delinquent
Lender shall be deemed to have  assigned any and all payments due to it from the
Borrower,  whether on account of outstanding Loans, interest, fees or otherwise,
to the remaining  nondelinquent  Lenders for  application  to, and reduction of,
their respective pro rata shares of all outstanding Loans. The Delinquent Lender
hereby  authorizes the  Administrative  Agent to distribute such payments to the
nondelinquent  Lenders in proportion to their  respective pro rata shares of all
outstanding Loans. A Delinquent Lender shall be deemed to have satisfied in full
a delinquency  when and if, as a result of application of the assigned  payments
to all outstanding Loans of the nondelinquent  Lenders,  the Lenders' respective
pro rata  shares  of all  outstanding  Loans  have  returned  to those in effect
immediately  prior  to  such  delinquency  and  without  giving  effect  to  the
nonpayment causing such delinquency.

         Section 12.6. Holders of Notes. The  Administrative  Agent may deem and
                       -----------------
treat  the  payee  of  any  Note  or  the  purchaser  of any  Letter  of  Credit
Participation  as the absolute  owner  thereof for all purposes  hereof until it
shall have been furnished in writing with a different name by such payee or by a
subsequent holder.

         Section 12.7. Indemnity. The Lenders jointly and severally agree hereby
                       ----------
to indemnify  and hold  harmless the Agents from and against any and all claims,
actions and suits (whether  groundless or otherwise),  losses,  damages,  costs,
expenses  (including any expenses for which the Agents have not been  reimbursed
by the  Borrower as required by Section 13 or Section 14),  and  liabilities  of
every nature and character arising out of or related to this Credit Agreement or
the Notes or the

                                      -59-

transactions contemplated or evidenced hereby or thereby, or the Agents' actions
taken  hereunder or thereunder,  except to the extent that any of the same shall
be directly caused by such Agent's own willful misconduct or gross negligence.

         Section 12.8. Agents as Lenders. In their individual  capacities,  each
                       ------------------
of the Agents shall have the same  obligations  and the same rights,  powers and
privileges  in respect to its  Commitments  and the Loans made by it, and as the
holder  of any of  the  Notes  and as the  purchaser  of any  Letter  of  Credit
Participations,  as such  Lender  would  have  were it not  also an  Agent or an
Affiliate of an Agent.

         Section 12.9.  Resignation.  Any Agent may resign at any time by giving
                        ------------
ninety (90) days' prior written  notice thereof to the Lenders and the Borrower.
Upon any such resignation,  the Required Lenders shall have the right to appoint
another Lender or any other financial institution as the successor Agent. Unless
a Default  or Event of Default  shall  have  occurred  and be  continuing,  such
successor,  if other  than a  Lender,  shall  be  reasonably  acceptable  to the
Borrower.  If no  successor  Agent shall have been so  appointed by the Required
Lenders and shall have accepted such  appointment  within thirty (30) days after
the retiring  Agent's giving of notice of  resignation,  then the retiring Agent
may, on behalf of the Lenders,  appoint a successor  Agent,  as the case may be.
Upon the acceptance of any appointment as Agent hereunder by a successor  Agent,
such successor Agent shall  thereupon  succeed to and become vested with all the
rights,  powers,  privileges and duties of the retiring Agent,  and the retiring
Agent shall be discharged from its duties and obligations  hereunder.  After any
retiring  Agent's  resignation,  the provisions of this Credit  Agreement  shall
continue in effect for its benefit in respect of any actions taken or omitted to
be taken by it while it was acting as Agent.

         Section  12.10.  Subordination  Agreement.  Each of the Lenders and the
                          -------------------------
other Agents hereby further  authorizes the  Administrative  Agent, on behalf of
and for the  benefit of Lenders  and the other  Agents,  to be the agent for and
representative  of  the  Lenders  and  the  other  Agents  with  respect  to the
Subordination Agreement.  Anything contained in any of the Loan Documents to the
contrary notwithstanding,  the Administrative Agent, each of the Lenders and the
other  Agents  hereby  agree that none of the Lenders or the other  Agents shall
have any rights  individually to enforce the Subordination  Agreement,  it being
understood  and agreed that all of the powers,  rights and remedies with respect
to the  Subordination  Agreement may be exercised  solely by the  Administrative
Agent for the benefit of the Lenders and the Agents in accordance with the terms
hereof and thereof.

         Section 12.11.  Syndication Agent;  Documentation Agents and Arrangers.
                         -------------------------------------------------------
None of the Syndication Agent, the Documentation Agents nor any of the Arrangers
shall have any right, power, obligation, liability, responsibility or duty under
this Credit  Agreement  in such  capacity,  other than those  applicable  to all
Lenders as Lenders.

         Section 13.  EXPENSES.  The Borrower  agrees to pay (a) the  reasonable
                      ---------
cost of  producing  and  reproducing  this  Credit  Agreement,  the  other  Loan
Documents and the other  agreements and instruments  mentioned  herein,  (b) any
taxes  (including any interest and penalties in respect  thereto) payable by the
Administrative   Agent  or  the  Lenders   (other  than  taxes  based  upon  the
Administrative  Agent's or any  Lender's  net income) on or with  respect to the
transactions contemplated by this Credit Agreement (the Borrower hereby agreeing
to  indemnify  the Lenders

                                      -60-

with respect  thereto),  (c) the reasonable fees,  expenses and disbursements of
the Administrative Agent's Special Counsel,  counsel to the other Agents, or any
local  counsel to the  Administrative  Agent  incurred  in  connection  with the
preparation,  administration  or  interpretation of the Loan Documents and other
instruments   mentioned  herein,   each  closing   hereunder,   and  amendments,
modifications,  approvals, consents or waivers hereto or hereunder regardless of
whether  any  such  transaction  is  consummated,  (d) the  fees,  expenses  and
disbursements of the Administrative  Agent incurred by the Administrative  Agent
in connection with the preparation, administration or interpretation of the Loan
Documents and other  instruments  mentioned  herein,  each closing hereunder and
amendments,  modifications,  approvals, consents or waivers hereto or hereunder,
regardless  of  whether  any  such  transaction  is  consummated,  and  (e)  all
reasonable   out-of-pocket  expenses  (including  reasonable  attorneys'  (which
attorneys  may be, but shall not be required to be,  employees  of any Lender or
the  Administrative  Agent)  fees  and  costs)  incurred  by any  Lender  or the
Administrative  Agent in connection  with (i) the enforcement of any of the Loan
Documents against the Borrower or any of its Subsidiaries or the  administration
thereof  after  the  occurrence  of a  Default  or  Event of  Default,  (ii) any
so-called "work-out" of the Obligations and (iii) any litigation,  proceeding or
dispute  whether   arising   hereunder  or  otherwise  in  connection  with  the
transactions  contemplated hereby or under the other Loan Documents,  in any way
related to any  Lender's or the  Administrative  Agent's  relationship  with the
Borrower  or  any  of  its  Subsidiaries.  The  Borrower  agrees  to  pay to the
Administrative  Agent's Special Counsel all amounts  invoiced on or prior to the
Closing  Date and which the  Borrower is  obligated  to pay  pursuant to Section
13(c) within fourteen (14) days of receipt of the invoice. The covenants of this
Section 13 shall  survive  payment or  satisfaction  of payment of amounts owing
under or with respect to the Loan Documents.

         Section 14. INDEMNIFICATION.  The Borrower agrees to indemnify and hold
                     ----------------
harmless  each  of  the  Lenders,   Agents,   Arrangers  and  their   respective
shareholders,  directors,  officers, employees,  affiliates,  agents, attorneys,
accountants and consultants,  and each other entity,  if any, which controls any
of the  Lenders,  Agents  or  Arrangers,  and to hold each of such  Persons  and
entities  harmless  from  and  against  any and  all  losses,  claims,  damages,
settlement payments,  actions,  causes of action,  obligations,  liabilities and
reasonable costs and expenses, joint or several, which any such Person or entity
may incur arising out of or in connection  with this Credit  Agreement,  the C20
Acquisition,  the use of proceeds of any  extensions of credit  hereunder or any
related transactions,  or any claims, litigation,  investigations or proceedings
relating to any of the foregoing,  regardless of whether any of such indemnified
Persons is a party hereto,  and to reimburse each of such  indemnified  Persons,
upon  demand,  for any  reasonable  legal or other costs or expenses  reasonably
incurred in connection with any of the foregoing;  provided,  however,  that the
foregoing indemnity will not, as to any indemnified Person, apply to any losses,
claims, damages,  settlement payments,  liabilities or related costs or expenses
to the extent  resulting from the willful  misconduct or gross negligence of the
proposed  indemnified  Person.  No  indemnified  Person  shall be liable for any
indirect  or  consequential  damages in  connection  with any of its  activities
relating to this Credit Agreement or the other Loan Documents. In litigation, or
the  preparation  therefor,  the Lenders and the  Administrative  Agent shall be
entitled  to  select  their  own  counsel  and,  in  addition  to the  foregoing
indemnity,  the Borrower agrees to pay promptly the reasonable fees and expenses
of such  counsel.  If, and to the extent that the  obligations  of the  Borrower
under this Section 14 are  unenforceable  for any reason,  the  Borrower  hereby
agrees to make the maximum  contribution  to the payment in satisfaction of such

                                      -61-

obligations  which is permissible  under  applicable  law. The covenants of this
Section 14 shall  survive  payment or  satisfaction  of payment of amounts owing
under or with respect to the Loan Documents.

         Section 15. ADJUSTMENTS; SETOFF.
                     --------------------

         (a) If any Lender (a "benefitted Lender") shall at any time receive any
payment  of all or part of its Loans or  Unpaid  Reimbursement  Obligations,  or
interest  thereon,  or  receive  any  collateral  in  respect  thereof  (whether
voluntarily or involuntarily, by set-off, or otherwise), in a greater proportion
than any such payment to or collateral  received by any other Lender, if any, in
respect of such other Lender's  Loans or Unpaid  Reimbursement  Obligations,  or
interest thereon,  such benefitted Lender shall purchase for cash from the other
Lenders a  participating  interest in such  portion of each such other  Lender's
Loans and Unpaid Reimbursement Obligations,  or shall provide such other Lenders
with the benefits of any such collateral,  or the proceeds thereof,  as shall be
necessary  to cause  such  benefitted  Lender to share  the  excess  payment  or
benefits  of such  collateral  or  proceeds  ratably  with each of the  Lenders;
provided, however, that if all or any portion of such excess payment or benefits
is thereafter  recovered  from such  benefitted  Lender,  such purchase shall be
rescinded,  and the purchase price and benefits returned,  to the extent of such
recovery,  but without  interest,  unless the Lender from which such  payment is
recovered  is  required  to pay  interest  thereon,  in which  case each  Lender
returning funds to such Lender shall pay its pro rata share of such interest.

         (b) In  addition  to any  other  rights  and  remedies  of the  Lenders
provided by law, and regardless of the adequacy of any collateral,  if any Event
of Default shall be  continuing,  each Lender is authorized at any time and from
time to time,  without  prior  notice to the  Borrower,  any such  notice  being
irrevocably  waived by the Borrower to the fullest  extent  permitted by law, to
set off and apply,  to the fullest extent  permitted by applicable  law, any and
all deposits (general or special,  time or demand,  provisional or final) at any
time held by, and other indebtedness at any time owing by, such Lender to or for
the credit or the account of the Borrower against any and all Obligations  owing
to such  Lender,  now or at any time  hereafter  created,  arising or  existing,
irrespective  of whether or not the  Administrative  Agent or such Lender  shall
have made demand  under this Credit  Agreement  or any other Loan  Document  and
although such  Obligations  may be  contingent or unmatured.  Each Lender agrees
promptly  to notify the  Borrower  and the  Administrative  Agent after any such
set-off and application made by such Lender; provided, however, that the failure
to give any such  notice  shall not  affect the  validity  of such  set-off  and
application.  The rights of each Lender under this Section 15 are in addition to
all of the other rights and remedies  (including  other rights of set-off) which
such Lender may have.

         Section 16.  SURVIVAL OF  COVENANTS,  ETC. All  covenants,  agreements,
                      -----------------------------
representations  and warranties  made herein,  in the Notes, in any of the other
Loan Documents or in any documents or other papers  delivered by or on behalf of
the  Borrower  pursuant  hereto  shall be deemed to have been relied upon by the
Lenders  and  the  Administrative   Agent,   notwithstanding  any  investigation
heretofore or hereafter made by any of them, and shall survive the making by the
Lenders of the Loans and the  issuance,  extension  or renewal of any Letters of
Credit, as herein  contemplated,  and shall continue in full force and effect so
long as any Obligation  remains  outstanding or any Lender has any obligation to
make any Loans or the Administrative  Agent has any obligation to issue,  extend
or renew any Letter of Credit.  All

                                      -62-


statements  contained in any  certificate or other paper delivered to any Lender
or the Administrative Agent at any time by or on behalf of the Borrower pursuant
hereto  or  in  connection  with  the  transactions  contemplated  hereby  shall
constitute representations and warranties by the Borrower hereunder.

         Section 17. ASSIGNMENT AND PARTICIPATION.
                     -----------------------------
         Section 17.1.  Conditions to Assignment by Lenders.  Except as provided
                        ------------------------------------
herein,  each  Lender  may  assign to one or more  Eligible  Assignees  all or a
portion of its interests,  rights and  obligations  under this Credit  Agreement
(including  all or a portion  of  Commitment  Percentage,  the Loans at the time
owing to it, the Notes  held by it and its  participation  interest  in the risk
relating to any Letters of Credit);  provided that (a) the Administrative  Agent
and, so long as no Event of Default has occurred and is continuing, the Borrower
(unless  such  assignment  is (i) to any Federal  Reserve  Bank or (ii) from any
Lender to an  affiliate  of such  Lender)  shall  have  given its prior  written
consent to such assignment, which consent will not be unreasonably withheld, (b)
each such assignment  shall be of a constant,  and not a varying,  percentage of
all the assigning  Lender's rights and obligations  under this Credit Agreement,
(c) each such  assignment  shall be in a minimum  amount of  $5,000,000  (or, if
less, such Lender's entire  Commitment),  except in the case of an assignment to
an existing  Lender),  and (d) the parties to such assignment  shall execute and
deliver  to  the  Administrative  Agent,  for  recording  in  the  Register  (as
hereinafter defined), an Assignment and Acceptance, substantially in the form of
Exhibit E hereto  (an  "Assignment  and  Acceptance"),  together  with any Notes
subject  to such  assignment.  Upon such  execution,  delivery,  acceptance  and
recording,  from and after the effective date  specified in each  Assignment and
Acceptance,  which effective date shall be at least five (5) Business Days after
the execution thereof,  (i) the assignee thereunder shall be a party hereto and,
to the extent provided in such  Assignment and  Acceptance,  have the rights and
obligations  of a Lender  hereunder,  (ii) the assigning  Lender  shall,  to the
extent provided in such assignment and upon payment to the Administrative  Agent
of the  registration  fee  referred to in Section  17.3,  be  released  from its
obligations  under this Credit  Agreement  and (iii)  Schedule  1.1(a)  shall be
deemed to be automatically amended to reflect the change in the Lenders and each
Lender's Commitment and Commitment Percentage resulting from such Assignment and
Acceptance.

         Section 17.2.  Certain  Representations  and  Warranties;  Limitations;
                        --------------------------------------------------------
Covenants. By executing and delivering an Assignment and Acceptance, the parties
- ----------
to the assignment  thereunder confirm to and agree with each other and the other
parties hereto as follows:  (a) other than the  representation and warranty that
it is the legal and beneficial owner of the interest being assigned thereby free
and clear of any adverse claim, the assigning Lender makes no  representation or
warranty,  express or implied, and assumes no responsibility with respect to any
statements,  warranties or  representations  made in or in connection  with this
Credit  Agreement  or  the  execution,   legality,   validity,   enforceability,
genuineness,  sufficiency  or value of this  Credit  Agreement,  the other  Loan
Documents or any other instrument or document  furnished  pursuant hereto or the
attachment, perfection or priority of any security interest or mortgage; (b) the
assigning   Lender   makes  no   representation   or  warranty  and  assumes  no
responsibility  with respect to the financial  condition of the Borrower and its
Subsidiaries or any other Person  primarily or secondarily  liable in respect of
any of the Obligations, or the performance or observance by the Borrower and its
Subsidiaries or any other Person  primarily or secondarily  liable in respect of
any of the Obligations of any of their  obligations  under this Credit Agreement

                                      -63-

or any of the other Loan Documents or any other instrument or document furnished
pursuant  hereto or thereto;  (c) such assignee  confirms that it has received a
copy of this Credit Agreement, together with copies of the most recent financial
statements  referred to in Section 5.4 and Section 6.4 and such other  documents
and information as it has deemed appropriate to make its own credit analysis and
decision to enter into such Assignment and  Acceptance;  (d) such assignee will,
independently and without reliance upon the assigning Lender, the Administrative
Agent or any other  Lender and based on such  documents  and  information  as it
shall deem appropriate at the time, continue to make its own credit decisions in
taking or not taking  action  under this  Credit  Agreement;  (e) such  assignee
represents  and  warrants  that it is an Eligible  Assignee;  (f) such  assignee
appoints and authorizes the Administrative Agent to take such action as agent on
its behalf and to exercise such powers under this Credit Agreement and the other
Loan Documents as are delegated to the Administrative  Agent by the terms hereof
or thereof,  together with such powers as are reasonably incidental thereto; (g)
such assignee  agrees that it will perform in accordance with their terms all of
the  obligations  that by the terms of this Credit  Agreement are required to be
performed by it as a Lender;  (h) such assignee  represents and warrants that it
is legally authorized to enter into such Assignment and Acceptance; and (i) such
assignee  acknowledges  that it has made  arrangements with the assigning Lender
satisfactory  to such  assignee  with respect to its pro rata share of Letter of
Credit Fees in respect of outstanding Letters of Credit.

         Section 17.3. Register.  The Administrative Agent shall maintain a copy
                       ---------
of each Assignment and Acceptance delivered to it and a register or similar list
(the  "Register")  for the recordation of the names and addresses of the Lenders
and the Commitment Percentage of, and principal amount of the Loans owing to and
Letter of Credit Participations purchased by, the Lenders from time to time. The
entries in the Register shall be conclusive,  in the absence of manifest  error,
and the Borrower, the Administrative Agent and the Lenders may treat each Person
whose name is recorded in the Register as a Lender hereunder for all purposes of
this Credit  Agreement.  The Register  shall be available for  inspection by the
Borrower  and the  Lenders  at any  reasonable  time and from  time to time upon
reasonable prior notice. Upon each such recordation, the assigning Lender agrees
to pay to the Administrative Agent a registration fee in the sum of $3,500.

         Section  17.4.  New  Notes.  Upon  its  receipt  of an  Assignment  and
                         -----------
Acceptance  executed by the parties to such assignment,  together with each Note
subject  to such  assignment,  the  Administrative  Agent  shall (a)  record the
information  contained  therein  in the  Register,  and (b) give  prompt  notice
thereof to the  Borrower  and the  Lenders  (other than the  assigning  Lender).
Within five (5) Business Days after receipt of such notice, the Borrower, at its
own expense,  shall execute and deliver to the Administrative Agent, in exchange
for each surrendered  Note, a new Note to the order of such Eligible Assignee in
an amount equal to the amount assumed by such Eligible Assignee pursuant to such
Assignment and Acceptance and, if the assigning Lender has retained some portion
of its obligations hereunder, a new Note to the order of the assigning Lender in
an amount  equal to the amount  retained by it  hereunder.  Such new Notes shall
provide that they are  replacements  for the surrendered  Notes,  shall be in an
aggregate  principal  amount  equal to the  aggregate  principal  amount  of the
surrendered  Notes,  shall be dated the effective  date of such  Assignment  and
Acceptance  and shall  otherwise  be in  substantially  the form of the assigned
Notes.  Upon the request of any Lender,  the Borrower shall within five (5) days
of the  issuance  of any  new  Notes  pursuant  to  this  Section  17.4,  at the
requesting  Lender's  expense,  deliver an opinion of counsel,  addressed to the
Lenders  and the  Agents,  relating  to the  due  authorization,

                                      -64-

execution and delivery of such new Notes and the legality,  validity and binding
effect  thereof,  in  form  and  substance  satisfactory  to  the  Lenders.  The
surrendered Notes shall be cancelled and returned to the Borrower.

         Section 17.5.  Participations.  Each Lender may sell  participations to
                        ---------------
one or more banks or other entities in all or a portion of such Lender's  rights
and  obligations  under this  Credit  Agreement  and the other  Loan  Documents;
provided that (a) each such participation shall be in an amount of not less than
$5,000,000,  (b) any such sale or participation  shall not affect the rights and
duties of the selling  Lender  hereunder to the Borrower and (c) the only rights
granted to the  participant  pursuant to such  participation  arrangements  with
respect to waivers,  amendments or  modifications of the Loan Documents shall be
the rights to approve waivers, amendments or modifications that would reduce the
principal of or the interest rate on any Loans,  extend the term or increase the
amount of the  Commitment  of such  Lender as it  relates  to such  participant,
reduce the amount of any  Facility  Fees or Letter of Credit  Fees to which such
participant  is  entitled or extend any  regularly  scheduled  payment  date for
principal or interest.

         Section  17.6.  Disclosure.  The  Borrower  agrees  that in addition to
                         -----------
disclosures  made in accordance with standard and customary  banking  practices,
any  Lender  may in  accordance  with the terms of  Section  27 hereof  disclose
information  obtained  by such  Lender  pursuant  to this  Credit  Agreement  to
assignees or participants  and potential  assignees or  participants  hereunder;
provided  that  such  assignees  or  participants  or  potential   assignees  or
participants shall agree (a) to treat in confidence such information unless such
information  otherwise  becomes  public  knowledge,  (b)  not to  disclose  such
information to a third party, except as required by law or legal process and (c)
not to make use of such  information for purposes of  transactions  unrelated to
such contemplated assignment or participation.

         Section 17.7. Assignee or Participant  Affiliated with the Borrower. If
                       ------------------------------------------------------
any  assignee  Lender is an Affiliate of the  Borrower,  then any such  assignee
Lender  shall  have no right to vote as a Lender  hereunder  or under any of the
other  Loan  Documents  for  purposes  of  granting  consents  or waivers or for
purposes of agreeing to  amendments  or other  modifications  to any of the Loan
Documents  or for  purposes  of  making  requests  to the  Administrative  Agent
pursuant to Section 11, and the  determination of the Required Lenders shall for
all  purposes of this  Agreement  and the other Loan  Documents  be made without
regard to such assignee  Lender's  interest in any of the Loans or Reimbursement
Obligations. If any Lender sells a participating interest in any of the Loans or
Reimbursement Obligations to a participant, and such participant is the Borrower
or an Affiliate of the  Borrower,  then such  transferor  Lender shall  promptly
notify the Administrative Agent of the sale of such participation.  A transferor
Lender  shall  have no right to vote as a Lender  hereunder  or under any of the
other  Loan  Documents  for  purposes  of  granting  consents  or waivers or for
purposes of agreeing to amendments or modifications to any of the Loan Documents
or for  purposes of making  requests  to the  Administrative  Agent  pursuant to
Section 11 to the extent that such  participation  is beneficially  owned by the
Borrower or any Affiliate of the Borrower, and the determination of the Required
Lenders shall for all purposes of this Agreement and the other Loan Documents be
made without  regard to the interest of such  transferor  Lender in the Loans or
Reimbursement Obligations to the extent of such participation.

         Section 17.8. Miscellaneous Assignment Provisions. Any assigning Lender
                       ------------------------------------
shall retain its rights to be indemnified  pursuant to Section 13 and Section 14
with  respect  to any  claims  or  actions  arising

                                      -65-

prior  to  the  date  of  such  assignment.  Any  assignee  Lender  that  is not
incorporated  or organized under the laws of the United States of America or any
state  thereof,  shall,  prior  to the date on which  any  interest  or fees are
payable  hereunder  or under any of the other Loan  Documents  for its  account,
deliver to the Borrower and the  Administrative  Agent two duly completed copies
of United  States  Internal  Revenue  Service Form W-8BEN or W-8ECI or successor
applicable form, as the case may be, certifying in each case that such Lender is
entitled to receive  payments  under this Credit  Agreement  or any of the other
Loan  Documents  payable to it,  without  deduction or withholding of any United
States  federal  income  taxes.  The last sentence of Section 4.4 shall apply to
each  assignee  Lender.  Anything  contained  in this Section 17 to the contrary
notwithstanding,  any  Lender may at any time  pledge all or any  portion of its
interest and rights under this Credit Agreement (including all or any portion of
its Notes) to any of the twelve Federal Reserve Lenders  organized under Section
4 of the  Federal  Reserve  Act,  12 U.S.C.  Section  341. No such pledge or the
enforcement  thereof  shall  release  the pledgor  Lender  from its  obligations
hereunder or under any of the other Loan Documents.

         Section 17.9. Assignment by Borrower.  The Borrower shall not assign or
                       -----------------------
transfer  any of its  rights  or  obligations  under  any of the Loan  Documents
without the prior written  consent of the  Administrative  Agent and each of the
Lenders.

         Section 17.10. Increase in Total Commitment.
                        -----------------------------
         (a) At any  time  prior  to 5:00  p.m.  (Houston,  Texas  time)  on the
ninetieth (90th) day after the Closing Date, the Borrower may request on no more
than one occasion that the Total Commitment be increased, without the consent of
the Required Lenders, by an amount up to $100,000,000; provided, that, the Total
Commitment,  determined  after  giving  effect  to such  increase  in the  Total
Commitment,  shall not at any time exceed  $350,000,000.  The Borrower's request
shall be made in writing (a "Commitment  Increase  Notice") and delivered to the
Administrative  Agent at  least  one (1)  Business  Day  prior  to the  proposed
effective date of the increase in Total  Commitment and shall specify the amount
of the proposed increase in Total Commitment and the proposed effective date for
such increase in Total Commitment,  which proposed  effective date must be prior
to the ninetieth (90th) day after the Closing Date. No Lender,  by virtue of its
being a party  hereto,  shall have any  obligation  of any kind to provide  such
commitments,  and each Lender may  determine  with sole,  absolute  and complete
discretion whether to provide such commitments.  The Commitment  Increase Notice
shall specify  each,  if any,  Lender which has agreed to provide an increase in
its Commitment and the amount of such increase and each Eligible  Assignee which
has  agreed  to  become a  "Lender"  party  hereto  (an  "Acceding  Lender")  in
connection with the Commitment  Increase Notice and the amount of the Commitment
of  such  Acceding  Lender.  Any  Acceding  Lender  shall  be  approved  by  the
Administrative  Agent,  which approval shall not be unreasonably  withheld.  The
Administrative  Agent shall notify the Borrower and the Lenders on or before the
Business Day immediately  prior to the proposed  effective date of the amount of
each  Lender's and  Acceding  Lender's  Commitment  (the  "Effective  Commitment
Amount")  and the  amount  of the  Total  Commitment,  which  amounts  shall  be
effective  on the  following  Business Day subject to the  conditions  set forth
herein.  Any increase in the Total  Commitment under this Credit Agreement shall
be subject to the following conditions precedent:

                                      -66-

                  (i) as of the date of the Commitment Increase Notice and as of
          the proposed  effective  date of the increase in the Total  Commitment
          under this Credit Agreement,  all representations and warranties shall
          be true and  correct in all  material  respects as though made on such
          date (unless such representation and warranty is made as of a specific
          date, in which case,  such  representation  and warranty shall be true
          and correct as of such date);

                  (ii) as of the date of the Commitment  Increase  Notice and as
          of the proposed effective date of the increase in the Total Commitment
          under this Credit Agreement,  no event shall have occurred and then be
          continuing  which  constitutes a Default or Event of Default under the
          Credit  Agreement  and all  other  conditions  precedent  to a  credit
          extension specified in Section 10 shall be satisfied;

                  (iii) each Acceding  Lender which shall have agreed to provide
          a  "Commitment"  in support of such  increase in the Total  Commitment
          under this  Credit  Agreement,  shall have  executed  and  delivered a
          counterpart of this Credit Agreement; and

                  (iv) the  Borrower  shall have  executed  and  delivered  such
          additional Notes as appropriate in connection with such increase.

Upon  satisfaction  of the  conditions  precedent  to any  increase in the Total
Commitment under this Credit Agreement,  the Administrative Agent shall promptly
advise the Borrower and each Lender of the effective date of such increase. Upon
the  effective  date of any increase in the Total  Commitment  under this Credit
Agreement that is supported by an Acceding Lender, such Acceding Lender shall be
a party to this  Credit  Agreement  as a Lender  and shall  have the  rights and
obligations  of a Lender  hereunder.  In addition,  on the effective  date,  the
Administrative  Agent shall replace the existing Schedule 1.1(a) attached hereto
with the revised  Schedule 1.1(a)  reflecting such new Total Commitment and each
Lender's Commitment.  Nothing contained herein shall constitute, or otherwise be
deemed to be, a commitment on the part of any Lender to increase its Commitments
hereunder.

         (b) For purposes of this paragraph (b), (i) the term "Buying Lender(s)"
shall mean (A) each Lender the Effective  Commitment  Amount of which is greater
than its  Commitment  prior to the  effective  date of any increase in the Total
Commitment  under this Credit  Agreement  and (B) each  Acceding  Lender that is
allocated an  Effective  Commitment  Amount in  connection  with any  Commitment
Increase  Notice and (ii) the term  "Selling  Lender(s)"  shall mean each Lender
whose Commitment under this Credit Agreement is not being increased from that in
effect  prior  to such  increase  in the  Total  Commitment  under  this  Credit
Agreement as the case may be. Effective on the effective date of any increase in
the Total  Commitment  under this Credit  Agreement  pursuant to  paragraph  (a)
above,  each Selling  Lender hereby sells,  grants,  assigns and conveys to each
Buying Lender, without recourse,  warranty or representation of any kind, except
as  specifically  provided  herein,  an  undivided  percentage  in such  Selling
Lender's  right,  title  and  interest  in and to its  outstanding  Loans in the
respective amounts and percentages  necessary so that, from and after such sale,
each such Selling Lender's  outstanding  Loans shall equal such Selling Lender's
pro rata share (calculated based upon the Effective  Commitment  Amounts) of the
outstanding  Loans under this Credit  Agreement as applicable.  Effective on the
effective  date of any  increase  in the  Total  Commitment  under  this  Credit
Agreement  pursuant to paragraph (a) above,  each Buying Lender hereby purchases
and accepts such grant, assignment

                                      -67-

and conveyance from the Selling  Lenders.  Each Buying Lender hereby agrees that
its respective purchase price for the portion of the outstanding Loans purchased
hereby shall equal the respective  amount necessary so that, from and after such
payments,  each  Buying  Lender's  outstanding  Loans  shall  equal such  Buying
Lender's pro rata share (calculated based upon the Effective Commitment Amounts)
of the  outstanding  Loans under this  Credit  Agreement.  Such amount  shall be
payable on the effective date of the increase in the Total Commitment under this
Credit  Agreement  by  wire  transfer  of  immediately  available  funds  to the
Administrative Agent. The Administrative Agent, in turn, shall wire transfer any
such funds  received to the  Selling  Lenders,  in same day funds,  for the sole
account of the Selling  Lenders.  Each  Selling  Lender  hereby  represents  and
warrants to each Buying  Lender  that such  Selling  Lender owns the Loans being
sold and assigned  hereby for its own account and has not sold,  transferred  or
encumbered any or all of its interests in such Loans,  except for participations
which will be  extinguished  upon  payment to the  Selling  Lender of any amount
equal to the portion of the outstanding Loans being sold by such Selling Lender.
Each Buying Lender hereby  acknowledges and agrees that, except for such Selling
Lender's  representations  and warranties  contained in the foregoing  sentence,
each such  Buying  Lender  has agreed to such  increase  on the basis of its own
independent  investigation  and has not relied upon, and will not rely upon, any
explicit or implicit written or oral representation, warranty or other statement
of the  Lenders  or  the  Administrative  Agent  concerning  the  authorization,
execution,  legality, validity,  effectiveness,  genuineness,  enforceability or
sufficiency of this Credit  Agreement or the other Loan Documents.  The Borrower
hereby agrees to  compensate  each Selling  Lender for all losses,  expenses and
liabilities  incurred by each Lender in connection  with the sale and assignment
of any Eurodollar  Rate Loans hereunder on the terms and in the manner set forth
in Section 4.3 hereof.

         Section 18.  NOTICES,  ETC. Except as otherwise  expressly  provided in
                      --------------
this Credit Agreement,  all notices and other communications made or required to
be given pursuant to this Credit  Agreement or the Notes or any Letter of Credit
Applications  shall be in  writing  and shall be  delivered  in hand,  mailed by
United States registered or certified first class mail, postage prepaid, or sent
by telecopy and confirmed by delivery via courier or postal  service,  addressed
as follows:

         (a) if to the  Borrower,  at 8410  West Bryn Mawr  Avenue,  Suite  700,
Chicago,  Illinois  60631,  Attention:  Executive Vice  President-Finance,  with
copies to the  Secretary of the Borrower,  Stephen P. Fitzell,  at Sidley Austin
Brown & Wood, Bank One Plaza, 10 South Dearborn Street, Chicago,  Illinois 60603
and to the Parent Company at 30 North LaSalle Street,  Chicago,  Illinois 60602,
Attention:  Corporate  Treasurer,  and to the  Secretary of the Parent  Company,
Michael  G.  Hron,  at Sidley  Austin  Brown & Wood,  Bank One  Plaza,  10 South
Dearborn Street, Chicago, Illinois 60603, or at such other address for notice as
the  Borrower  shall last have  furnished  in  writing to the Person  giving the
notice;

         (b) if to the  Administrative  Agent at the  address  set forth for the
Administrative  Agent on Schedule 1.1(a) hereto or such other address for notice
as the  Administrative  Agent shall last have furnished in writing to the Person
giving the notice;

         (c) if to any other Agent or any other Lender, at the address set forth
for such Agent or Lender in  Schedule  1.1(a)  hereto or such other  address for
notice as such Agent or such Lender shall have last  furnished in writing to the
Person giving the notice.

                                      -68-

         Any such  notice or demand  shall be deemed to have been duly  given or
made and to have become  effective (i) if telecopied,  or delivered by hand to a
responsible  officer  of the party to which it is  directed,  at the time of the
receipt  thereof by such  officer and (ii) if sent by  registered  or  certified
first-class mail, postage prepaid, three days after the date mailed.

         Section 19.  GOVERNING LAW. THIS CREDIT AGREEMENT AND EACH OF THE OTHER
                      --------------
LOAN  DOCUMENTS ARE CONTRACTS  UNDER THE LAWS OF THE STATE OF NEW YORK AND SHALL
FOR ALL  PURPOSES BE CONSTRUED  IN  ACCORDANCE  WITH AND GOVERNED BY THE LAWS OF
SAID STATE  (EXCLUDING  THE LAWS  APPLICABLE TO CONFLICTS OR CHOICE OF LAW OTHER
THAN GENERAL  OBLIGATIONS  LAW Section  5-1401).  THE  BORROWER  CONSENTS TO THE
JURISDICTION  IN ANY OF THE FEDERAL OR STATE COURTS  LOCATED IN THE STATE OF NEW
YORK IN  CONNECTION  WITH ANY SUIT TO ENFORCE  THE RIGHTS OF THE LENDERS AND THE
AGENT UNDER THIS CREDIT AGREEMENT OR ANY OF THE OTHER LOAN DOCUMENTS.

         Section 20.  HEADINGS.  The captions in this Credit  Agreement  are for
                      ---------
convenience  of  reference  only and  shall not  define or limit the  provisions
hereof.

         Section 21.  COUNTERPARTS.  This  Credit  Agreement  and any  amendment
                      -------------
hereof may be executed in several  counterparts  and by each party on a separate
counterpart,  each of which when so executed and delivered shall be an original,
and all of which  together  shall  constitute  one  instrument.  In proving this
Credit  Agreement  it shall not be necessary to produce or account for more than
one such  counterpart  signed by the party against whom  enforcement  is sought.
Delivery by  facsimile by any of the parties  hereto of an executed  counterpart
hereof or of any amendment or waiver hereto shall be as effective as an original
executed counterpart hereof or of such amendment or waiver.

         Section 22.  ENTIRE  AGREEMENT,  ETC. The Loan  Documents and any other
                      ------------------------
documents  executed  in  connection  herewith  or  therewith  express the entire
understanding  of the  parties  with  respect to the  transactions  contemplated
hereby.  The  obligations  of the Borrower to make payments  required by the Fee
Letters  shall remain in full force and effect after the Closing  Date.  Neither
this Credit Agreement nor any term hereof may be changed, waived,  discharged or
terminated, except as provided in Section 24.

         Section 23.  WAIVER OF JURY TRIAL.  Each of the parties  hereto  hereby
                      ---------------------
waives its right to a jury trial with respect to any action or claim arising out
of any dispute in connection with this Credit Agreement or any of the other Loan
Documents,  any rights or obligations hereunder or thereunder or the performance
of  such  rights  and   obligations.   The  Borrower  (a)   certifies   that  no
representative,  agent or attorney of any Lender or the Administrative Agent has
represented,  expressly  or  otherwise,  that such Lender or the  Administrative
Agent  would  not,  in the event of  litigation  seek to enforce  the  foregoing
waivers and (b) acknowledges  that it has been induced to enter into this Credit
Agreement  and the other Loan  Documents  by,  among  other  things,  the mutual
waivers and certifications contained herein.

         Section 24.  CONSENTS,  AMENDMENTS,  WAIVERS,  ETC. Except as otherwise
                      --------------------------------------
expressly provided in this Credit Agreement, any consent or approval required or
permitted by

                                      -69-


this Credit  Agreement to be given by the Lenders may be given,  and any term of
this Credit  Agreement or of any other  instrument  related  hereto or mentioned
herein may be amended,  and the performance or observance by the Borrower of any
terms of this Credit  Agreement or such other  instrument or the  continuance of
any  Default  or  Event of  Default  may be  waived  (either  generally  or in a
particular  instance and either  retroactively or prospectively)  with, but only
with,  the  written  consent  of the  Borrower  and the  written  consent of the
Required Lenders.  Notwithstanding the foregoing, no amendment,  modification or
waiver shall:

         (a)  without  the  written  consent  of the  Borrower  and each  Lender
directly affected thereby:

                  (i) reduce or  forgive  the  principal  amount of any Loans or
          Reimbursement Obligations, or reduce the rate of interest on the Notes
          or the amount of the Facility Fee or Letter of Credit Fees (other than
          interest  accruing  pursuant to Section 4.11  following  the effective
          date of any waiver by the Required  Lenders of the Default or Event of
          Default relating thereto);

                  (ii) increase the amount of such Lender's Commitment or extend
          the expiration date of such Lender's Commitment; and

                  (iii)  postpone  or  extend  the  Maturity  Date or any  other
          regularly  scheduled  dates for payments of principal  of, or interest
          on,  the  Loans  or  Reimbursement  Obligations  or any  fees or other
          amounts payable to such Lender (it being  understood that (A) a waiver
          of the application of the default rate of interest pursuant to Section
          4.11,  and (B) any vote to rescind any  acceleration  made pursuant to
          Section  11 of  amounts  owing  with  respect  to the  Loans and other
          Obligations shall require only the approval of the Required Lenders);

         (b) without the written  consent of all of the Lenders,  amend or waive
Section 15, this Section 24 or the definition of Required Lenders;

         (c) without the written consent of the  Administrative  Agent, amend or
waive  Section  2.5(c),  Section 2.9, the amount or time of payment of Letter of
Credit  Fees  payable  for  the  Administrative  Agent's  account  or any  other
provision applicable to the Administrative Agent; and

         (d) without the written  consent of the Agents,  amend or waive Section
12.

No waiver  shall  extend to or affect any  obligation  not  expressly  waived or
impair any right consequent  thereon.  No course of dealing or delay or omission
on the part of any Lender or the  Administrative  Agent in exercising  any right
shall operate as a waiver thereof or otherwise be prejudicial thereto. No notice
to or demand upon the  Borrower  shall  entitle the Borrower to other or further
notice or demand in similar or other circumstances.

         Section 25. FCC  APPROVAL.  Notwithstanding  anything  to the  contrary
                     --------------
contained in this Credit  Agreement or in the other Loan Documents,  neither the
Administrative  Agent nor any  Lender  will  take any  action  pursuant  to this
Agreement or any of the other Loan Documents,  which would  constitute or result
in a change in control of the Borrower or any of its Subsidiaries  requiring the
prior  approval of the FCC without first  obtaining  such prior  approval of the
FCC.

                                      -70-

After the occurrence of an Event of Default, the Borrower shall take or cause to
be taken any action which the Agents may  reasonably  request in order to obtain
from the FCC such  approval as may be necessary to enable the Agents to exercise
and enjoy the full rights and benefits granted to the Administrative  Agent, for
the  benefit of the Lenders by this  Credit  Agreement  or any of the other Loan
Documents,  including,  at the  Borrower's  cost  and  expense,  the  use of the
Borrower's  best efforts to assist in obtaining  such approval for any action or
transaction  contemplated  by this  Credit  Agreement  or any of the other  Loan
Documents for which such approval is required by law.

         Section 26. SEVERABILITY. The provisions of this Credit Agreement are
                     -------------
severable and if any one clause or provision hereof shall be held invalid or
unenforceable in whole or in part in any jurisdiction, then such invalidity or
unenforceability shall affect only such clause or provision, or part thereof, in
such jurisdiction, and shall not in any manner affect such clause or provision
in any other jurisdiction, or any other clause or provision of this Credit
Agreement in any jurisdiction.

         Section 27. CONFIDENTIALITY. Each of the Lenders and the Administrative
                     ----------------
Agent agrees to keep any non-public  information  delivered or made available to
it pursuant to this Credit  Agreement or any other Loan Document  (including the
terms  hereof or of any  amendment  or waiver  hereto to the extent the Borrower
does not  disclose  such  information  in its filings  with the  Securities  and
Exchange   Commission)   confidential  from  any  Person  other  than  officers,
employees,  agents,  accountants,  professional advisors,  counsel, designees or
representatives  of  such  Lender  or the  Administrative  Agent  who are or are
expected  to  become   engaged  in   evaluating,   approving,   structuring   or
administering  this  Credit  Agreement  or  any  of the  other  Loan  Documents;
provided,  that,  nothing herein shall prevent the  Administrative  Agent or any
Lender from disclosing such  information (i) to any assignee or participant that
has agreed in  writing  to comply  with the  confidentiality  provision  of this
Section 27 in connection with the contemplated assignment or participation, (ii)
to any  of its  Affiliates  to the  extent  any  such  Affiliates  require  such
information  in the  ordinary  course  of the  Administrative  Agent's  or  such
Lender's credit committee or asset management  procedures,  or (iii) as required
or requested by any governmental authority or representative thereof or pursuant
to  subpoena  or other legal  process,  by virtue of any other law,  regulation,
order, or interpretation,  or as required in connection with the exercise or any
remedy under this Credit Agreement or any of the other Loan Documents.



            [THE REMAINDER OF THIS PAGE IS INTENTIONALLY LEFT BLANK]

                          ***Signature Pages Follow***




                                      -71-


         IN WITNESS  WHEREOF,  the  undersigned  have duly  executed this Credit
Agreement under seal as of the date first set forth above.


                            UNITED STATES CELLULAR CORPORATION



                            By:   /s/ Kenneth R. Meyers
                               -------------------------------------------------
                               Name:   Kenneth R. Meyers
                               Title:  Executive Vice President - Finance (Chief
                                       Financial Officer) and Treasurer


                            By:   /s/ LeRoy T. Carlson, Jr.
                               -------------------------------------------------
                               Name:   LeRoy T. Carlson, Jr.
                               Title:  Chairman

                            TORONTO DOMINION (TEXAS), INC., as a Lender
                            and as Administrative Agent



                            By:   /s/ Jeffery R. Lents
                               -------------------------------------------------
                               Name:    Jeffery R. Lents
                               Title:   Vice President

                            WACHOVIA BANK, NATIONAL ASSOCIATION, as
                            Syndication Agent and a Lender



                            By:   /s/ Dorothy M. Killeen
                               -------------------------------------------------
                               Name:    Dorothy M. Killeen
                               Title:   Assistant Vice President



                       Signature Page to Credit Agreement

                          *** Signature Page Follows***




                                      -72-

                            CITIBANK, N.A., as a Lender and as a Documentation
                            Agent



                            By:   /s/ Maureen Maroney
                               -------------------------------------------------
                               Name:    Maureen Maroney
                               Title:   Director

                            LASALLE BANK NATIONAL ASSOCIATION, as a
                            Lender and as a Documentation Agent



                            By:   /s/ Robert M. Swanson
                               -------------------------------------------------
                               Name:    Robert M. Swanson
                               Title:   Senior Vice President












                       Signature Page to Credit Agreement