EXHIBIT 4.5

         INDENTURE dated as of March 1, 1996, among SHARED TECHNOLOGIES
           FAIRCHILD COMMUNICATIONS CORP., a Delaware corporation (the
           "Company"), SHARED TECHNOLOGIES INC., to be renamed SHARED
         TECHNOLOGIES FAIRCHILD INC. ("STFI"), various subsidiaries of
              the Company listed on the signature page hereto (the
         "Subsidiary Guarantors" and, with STFI, the "STFC Guarantors")
            and UNITED STATES TRUST COMPANY OF NEW YORK, a New York
                          corporation (the "Trustee").

                  Each  party  agrees as  follows  for the  benefit of the other
parties  and for the equal and ratable  benefit of the Holders of the  Company's
12-1/4% Senior  Subordinated  Discount Notes Due 2006 (the "Initial Notes") and,
if and when issued  pursuant to a  registered  exchange for Initial  Notes,  the
Company's  12-1/4%  Senior  Subordinated  Discount Notes Due 2006 (the "Exchange
Notes")  and, if and when  issued  pursuant  to a private  exchange  for Initial
Notes, the Company's  12-1/4% Senior  Subordinated  Discount Notes Due 2006 (the
"Private  Exchange Notes" and,  together with the Exchange Notes and the Initial
Notes, the "Notes"):


                                    ARTICLE 1

                   Definitions and Incorporation by Reference

                  SECTION 1.01.  Definitions.

                  "Accreted Value" as of any date (the "Specified  Date") means,
with respect to each $1,000 principal amount at maturity of Notes:

                  (i) if the Specified Date is one of the following  dates (each
         a "Semi-Annual  Accrual Date"), the amount set forth opposite such date
         below:




SEMI-ANNUAL ACCRUAL DATE                                                                          ACCRETED
                                                                                                   VALUE
                                                                                              
March 13, 1996                                                                                   $  702.77
September 1, 1996                                                                                   742.87
March 1, 1997                                                                                       788.37
September 1, 1997                                                                                   836.66
March 1, 1998                                                                                       887.90
September 1, 1988                                                                                   942.29
March 1, 1999                                                                                     1,000.00



                  (ii) if the  Specified  Date occurs  between  two  Semi-Annual
         Accrual Dates,  the sum of (A) the Accreted  Value for the  Semi-Annual
         Accrual Date immediately preceding the Specified Date and (B) an amount
         equal to the  product  of (i) the  Accreted  Value for the  immediately



         following  Semi-Annual  Accrual  Date less the  Accreted  Value for the
         immediately preceding Semi-Annual Accrual Date and (ii) a fraction, the
         numerator of which is the number of days from the immediately preceding
         Semi-Annual Accrual Date to the Specified Date, using a 360-day year of
         twelve 30-day months,  and the  denominator of which is 180 (or, if the
         Semi-Annual  Accrual Date  immediately  preceding the Specified Date is
         March 13, 1996, the denominator of which is 169); and

                  (iii) if the Specified Date occurs after the last  Semi-Annual
Accrual Date, $1,000.

                  "Acquisition"  means the merger of Fairchild  Industries  Inc.
with and into Shared Technologies Inc.

                  "Additional  Assets" means  (i) any  property or assets (other
than  Indebtedness  and Capital Stock) in a Related  Business;  (ii) the Capital
Stock of a Person  that  becomes  a  Restricted  Subsidiary  as a result  of the
acquisition  of  such  Capital  Stock  by  the  Company  or  another  Restricted
Subsidiary;  or  (iii) Capital  Stock  constituting  a minority  interest in any
Person that at such time is a Restricted Subsidiary; provided, however, that any
such Restricted  Subsidiary described in clause (ii) or (iii) above is primarily
engaged in a Related Business.

                  "Adjusted  Consolidated Net Income" means, for any period, the
Consolidated Net Income for such period plus, to the extent deducted  therefrom,
the  consolidated  amortization of goodwill of the Company and its  consolidated
Subsidiaries for such period related to the Acquisition.

                  "Affiliate"  of any  specified  Person means any other Person,
directly or indirectly, controlling or controlled by or under direct or indirect
common control with such specified Person.  For the purposes of this definition,
"control"  when used with  respect to any  Person  means the power to direct the
management and policies of such Person, directly or indirectly,  whether through
the  ownership of voting  securities,  by contract or  otherwise;  and the terms
"controlling" and "controlled" have meanings  correlative to the foregoing.  For
purposes of SectionsE4.05,  4.07 and 4.08 only,  "Affiliate" shall also mean any
beneficial  owner of Capital Stock  representing  5% or more of the total voting
power of the Voting Stock (on a fully diluted basis) of the Company or of rights
or  warrants  to  purchase  such  Capital   Stock   (whether  or  not  currently
exercisable)  and any Person who would be an  Affiliate  of any such  beneficial
owner pursuant to the first sentence hereof.

                  "Asset  Disposition" means any sale, lease,  transfer or other
disposition (or series of related sales,  leases,  transfers or dispositions) by
the Company or any Restricted Subsidiary,  including any disposition by means of
a  merger,

                                       2


consolidation or similar  transaction (each referred to for the purposes of this
definition  as a  "disposition"),  of  (i) any  shares  of  Capital  Stock  of a
Restricted  Subsidiary  (other  than  directors'  qualifying  shares  or  shares
required by  applicable  law to be held by a Person  other than the Company or a
Restricted Subsidiary), (ii) all or substantially all the assets of any division
or line of business of the Company or any  Restricted  Subsidiary  or  (iii) any
other assets of the Company or any Restricted Subsidiary outside of the ordinary
course of business of the Company or such Restricted  Subsidiary (other than, in
the  case of (i),  (ii) and  (iii)  above,  (y) a  disposition  by a  Restricted
Subsidiary  to the Company or by the  Company or a  Restricted  Subsidiary  to a
Wholly Owned Subsidiary and (z) for purposes of Section 4.07 only, a disposition
that constitutes a Restricted Payment permitted by Section 4.05).

                  "Attributable Debt" in respect of a Sale/Leaseback Transaction
means,  as at the time of  determination,  the present value  (discounted  at an
interest rate which would be applicable to Capital Lease Obligations with a like
term in accordance with GAAP) of the total  obligations of the lessee for rental
payments during the remaining term of the lease included in such  Sale/Leaseback
Transaction (including any period for which such lease has been extended).

                  "Average Life" means,  as of the date of  determination,  with
respect to any  Indebtedness  or  Preferred  Stock,  the  quotient  obtained  by
dividing  (i) the sum of the  products  of  numbers  of  years  from the date of
determination  to the dates of each successive  scheduled  principal  payment of
such  Indebtedness  or  redemption  or  similar  payment  with  respect  to such
Preferred Stock  multiplied by the amount of such payment by (ii) the sum of all
such payments.

                  "Bank  Indebtedness"  means any and all amounts payable by the
Company or any STFC Guarantor under or in respect of the Credit Facility, or any
facility  that  refinances  or  replaces  the Credit  Facility,  in each case as
amended, refinanced or replaced from time to time, including principal,  premium
(if any),  interest  (including  interest accruing on or after the filing of any
petition in bankruptcy or for reorganization  relating to the Company whether or
not a claim for post  filing  interest  is allowed in such  proceedings),  fees,
charges, expenses,  reimbursement obligations,  Guarantees and all other amounts
payable thereunder or in respect thereof.

                  "Banks" has the meaning specified in the Credit Facility.

                                       3


                  "Board  of  Directors"  means the  Board of  Directors  of the
Company or any committee thereof duly authorized to act on behalf of such Board.

                  "Business Day" means each day which is not a Legal Holiday.

                  "Capital  Lease  Obligations"  means  an  obligation  that  is
required to be  classified  and  accounted  for as a capital lease for financial
reporting  purposes  in  accordance  with GAAP,  and the amount of  Indebtedness
represented  by  such  obligation  shall  be  the  capitalized  amount  of  such
obligation  determined in accordance with GAAP; and the Stated Maturity  thereof
shall be the date of the last payment of rent or any other amount due under such
lease  prior to the first date upon which  such lease may be  terminated  by the
lessee without payment of a penalty.

                  "Capital  Stock"  of any  Person  means  any and  all  shares,
interests,  rights  to  purchase,  warrants,  options,  participations  or other
equivalents  of or  interests  in (however  designated)  equity of such  Person,
including any Preferred  Stock,  but excluding any debt  securities  convertible
into such equity.

                  "Change  of  Control"  means  the  occurrence  of  any  of the
following events:

                  (i) any "person" (as such term is used in  SectionsE13(d)  and
         14(d) of the Exchange Act), other than one or more Permitted Holders or
         STFI, is or becomes the beneficial owner (as defined in RulesE13d-3 and
         13d-5  under  the  Exchange  Act  except  that  for  purposes  of  this
         clauseE(i) such person shall be deemed to have  "beneficial  ownership"
         of all shares that any such  person has the right to  acquire,  whether
         such right is  exercisable  immediately  or only  after the  passage of
         time),  directly or  indirectly,  of more than 30% of the total  voting
         power of the Voting Stock of the Company;  provided,  however, that the
         Permitted Holders beneficially own (as defined in RulesE13d-3 and 13d-5
         under the Exchange  Act),  directly or  indirectly,  in the aggregate a
         lesser  percentage of the total voting power of the Voting Stock of the
         Company  than such other person and do not have the right or ability by
         voting power,  contract or otherwise to elect or designate for election
         a  majority  of the  Board  of  Directors  (for  the  purposes  of this
         clauseE(i),  a person  shall be deemed  beneficially  to own any Voting
         Stock of a  specific  corporation  held by a another  corporation  (the
         "parent corporation"), if such other person is the beneficial owner (as
         defined in this clauseE(i)),  directly or indirectly,  of more than 30%
         of the voting power of the Voting Stock of such parent  corporation and
         the Permitted  Holders  beneficially own (as defined in this clauseE(i)
         above), directly or indirectly, in the aggregate a

                                       4


         lesser  percentage  of the  voting  power of the  Voting  Stock of such
         parent  corporation  and do not have the  right or  ability  by  voting
         power,  contract or  otherwise  to elect or  designate  for  election a
         majority of the board of directors of such parent corporation);

                  (ii) one   or  more   Permitted   Holders   collectively   own
         beneficially, directly or indirectly, shares representing more than 49%
         of the  total  voting  power  of the  outstanding  Voting  Stock of the
         Company  or STFI;  provided,  however,  a Person  shall  be  deemed  to
         beneficially  own any Voting Stock of a specified  corporation or other
         entity  held by  another  corporation  or  other  entity  (the  "parent
         entity") if such person  owns  beneficially  more than 49% of the total
         voting power of the Voting Stock of such parent entity;

                  (iii) during any period of two consecutive years,  individuals
         who at the beginning of such period  constituted the Board of Directors
         (together  with  any new  directors  whose  election  by such  Board of
         Directors or whose  nomination  for election by the  shareholder of the
         Company was  approved by a vote of 60% of the  directors of the Company
         then still in office who were either directors at the beginning of such
         period or whose  election or nomination  for election was previously so
         approved) cease for any reason to constitute a majority of the Board of
         Directors then in office; or

                  (iv) the merger or  consolidation  of the Company with or into
         another  Person  or the  merger  of  another  Person  with or into  the
         Company,  or the sale of all or  substantially  all the  assets  of the
         Company to another  Person  (other than a Person that is  controlled by
         the  Permitted  Holders)  and,  in the  case  of  any  such  merger  or
         consolidation,  the  securities  of the  Company  that are  outstanding
         immediately  prior to such  transaction and which represent 100% of the
         aggregate  voting  power of the Voting Stock of the Company are changed
         into or exchanged for cash, securities or property,  unless pursuant to
         such  transaction such securities are changed into or exchanged for, in
         addition  to any  other  consideration,  securities  of  the  surviving
         corporation that represent immediately after such transaction, at least
         a majority of the  aggregate  voting  power of the Voting  Stock of the
         surviving corporation.

                  "Code" means the Internal Revenue Code of 1986, as amended.

                  "Company"  means  the  party  named as such in this  Indenture
until a successor  replaces it and,  thereafter,  means the  successor  and, for
purposes of any provision  contained  herein and required by the TIA, each other
obligor on the indenture securities.

                                       5


                  "Consolidated  Coverage Ratio" as of any date of determination
means the ratio of (i) the aggregate amount of EBITDA for the period of the most
recent four  consecutive  fiscal  quarters  ending at least 45 days prior to the
date of such  determination to (ii) Consolidated  Interest Expense for such four
fiscal quarters;  provided,  however,  that (1) if the Company or any Restricted
Subsidiary has Incurred any Indebtedness since the beginning of such period that
remains  outstanding or if the transaction  giving rise to the need to calculate
the  Consolidated  Coverage  Ratio is an  Incurrence of  Indebtedness,  or both,
EBITDA and  Consolidated  Interest  Expense for such period shall be  calculated
after  giving  effect  on a pro  forma  basis  to such  Indebtedness  as if such
Indebtedness has been Incurred on the first day of such period and the discharge
of any other Indebtedness repaid, repurchased,  defeased or otherwise discharged
with the proceeds of such new  Indebtedness as if such discharge had occurred on
the first day of such  period,  (2) if  since the  beginning  of such period the
Company or any Restricted Subsidiary shall have made any Asset Disposition,  the
EBITDA for such  period  shall be  reduced by an amount  equal to the EBITDA (if
positive)  directly  attributable  to the assets  which are the  subject of such
Asset Disposition for such period, or increased by an amount equal to the EBITDA
(if negative),  directly  attributable  thereto for such period and Consolidated
Interest  Expense  for such  period  shall be reduced by an amount  equal to the
Consolidated  Interest Expense directly  attributable to any Indebtedness of the
Company or any Restricted Subsidiary repaid, repurchased,  defeased or otherwise
discharged   with  respect  to  the  Company  and  its   continuing   Restricted
Subsidiaries in connection  with such Asset  Disposition for such period (or, if
the  Capital  Stock  of any  Restricted  Subsidiary  is sold,  the  Consolidated
Interest  Expense for such period directly  attributable to the  Indebtedness of
such  Restricted  Subsidiary  to the  extent  the  Company  and  its  continuing
Restricted  Subsidiaries are no longer liable for such  Indebtedness  after such
sale),  (3) if since the beginning of such period the Company or any  Restricted
Subsidiary  (by  merger  or  otherwise)  shall  have made an  Investment  in any
Restricted  Subsidiary (or any person which becomes a Restricted  Subsidiary) or
an  acquisition  of assets,  including any  acquisition  of assets  occurring in
connection with a transaction causing a calculation to be made hereunder,  which
constitutes all or substantially all of an operating unit of a business,  EBITDA
and  Consolidated  Interest  Expense for such period shall be  calculated  after
giving pro forma effect thereto  (including the Incurrence of any  Indebtedness)
as if such  Investment or  acquisition  occurred on the first day of such period
and (4) if  since the  beginning  of such period any Person  (that  subsequently
became a  Restricted  Subsidiary  or was merged  with or into the Company or any
Restricted  Subsidiary  since the  beginning or such period) shall have made any
Asset  Disposition,  any  Investment  or

                                       6


acquisition  of assets  that would  have  required  an  adjustment  pursuant  to
clauseE(2) or (3) above if made by the Company or a Restricted Subsidiary during
such period,  EBITDA and Consolidated  Interest Expense for such period shall be
calculated  after giving pro forma effect thereto as if such Asset  Disposition,
Investment or acquisition occurred on the first day of such period. For purposes
of this  definition,  whenever pro forma effect is to be given to an acquisition
of assets, the amount of income or earnings relating thereto,  and the amount of
Consolidated  Interest  Expense  associated  with any  Indebtedness  Incurred in
connection  therewith,  the pro forma  calculations  shall be determined in good
faith by a responsible  financial or accounting  Officer of the Company.  If any
Indebtedness  bears a floating  rate of  interest  and is being  given pro forma
effect,  the interest of such Indebtedness shall be calculated as if the rate in
effect on the date of determination  had been the applicable rate for the entire
period  (taking into  account any Interest  Rate  Agreement  applicable  to such
Indebtedness  if such Interest Rate  Agreement has a remaining term in excess of
12Emonths).

                  "Consolidated  Interest  Expense" means,  for any period,  the
total  interest  expense  of  the  Company  and  its   consolidated   Restricted
Subsidiaries,  plus, to the extent not included in such total interest  expense,
and to the  extent  incurred  by the  Company  or its  Restricted  Subsidiaries,
(i) interest  expense attributable to capital leases and one-third of the rental
expense attributable to operating leases, (ii) amortization of debt discount and
debt issuance cost, (iii) capitalized interest, (iv) non-cash interest expenses,
(v) commissions,  discounts  and other  fees and  charges  owed with  respect to
letters of credit and bankers' acceptance  financing,  (vi) net costs associated
with Hedging Obligations (including amortization of fees), (vii) Preferred Stock
dividends  in respect  of all  Preferred  Stock  held by Persons  other than the
Company or a Wholly Owned  Subsidiary,  (viii) interest  incurred in  connection
with  Investments  in  discontinued  operations,  (ix) interest  accruing on any
Indebtedness  of any other Person to the extent such  Indebtedness is Guaranteed
by the Company or any Restricted  Subsidiary and (x) the cash  contributions  to
any  employee  stock  ownership  plan  or  similar  trust  to  the  extent  such
contributions  are used by such  plan or trust  to pay  interest  or fees to any
Person (other than the Company) in connection with Indebtedness Incurred by such
plan or trust.

                  "Consolidated  Net  Income"  means,  for any  period,  the net
income of the Company and its consolidated Subsidiaries; provided, however, that
there shall not be included in such Consolidated Net Income:

                  (i) any  net  income  of any  Person  if such  Person is not a
         Restricted  Subsidiary,   except  that  (A) subject  to  the

                                       7


         exclusion  contained in clauseE(iv)  below, the Company's equity in the
         net income of any such Person for such period shall be included in such
         Consolidated  Net Income up to the  aggregate  amount of cash  actually
         distributed  by such  Person  during  such  period to the  Company or a
         Restricted Subsidiary as a dividend or other distribution  (subject, in
         the case of a  dividend  or  other  distribution  paid to a  Restricted
         Subsidiary,  to the limitations  contained in  clauseE(iii) below)  and
         (B) the  Company's  equity  in a net loss of any such  Person  for such
         period shall be included in determining such Consolidated Net Income;

                  (ii) any  net income (or loss) of any Person  acquired  by the
         Company or a Subsidiary in a pooling of interests  transactions for any
         period prior to the date of such acquisition;

                  (iii) any  net  income of any  Restricted  Subsidiary  if such
         Restricted   Subsidiary  is  subject  to   restrictions,   directly  or
         indirectly,  on the payment of dividends or the making of distributions
         by such Restricted Subsidiary,  directly or indirectly, to the Company,
         except that  (A) subject  to the  exclusion  contained  in  clauseE(iv)
         below,  the Company's  equity in the net income of any such  Restricted
         Subsidiary for such period shall be included in such  Consolidated  Net
         Income up to the aggregate amount of cash actually  distributed by such
         Restricted  Subsidiary  during  such  period to the  Company or another
         Restricted Subsidiary as a dividend or other distribution  (subject, in
         the case of a dividend or other distribution paid to another Restricted
         Subsidiary,  to the  limitation  contained  in this clause) and (B) the
         Company's  equity in a net loss of any such  Restricted  Subsidiary for
         such period  shall be included in  determining  such  Consolidated  Net
         Income;

                  (iv) any  gain (but not loss)  realized upon the sale or other
         disposition   of  any  assets  of  the  Company  or  its   consolidated
         Subsidiaries (including pursuant to any sale-and-leaseback arrangement)
         which is not sold or otherwise  disposed of in the  ordinary  course of
         business  and any gain (but not loss)  realized  upon the sale or other
         disposition of any Capital Stock of any Person;

                  (v) extraordinary gains or losses; and

                  (vi) the   cumulative   effect  of  a  change  in   accounting
         principles.

Notwithstanding  the foregoing,  for the purposes of  Section 4.05  only,  there
shall be excluded  from  Consolidated  Net Income any  dividends,  repayments of
loans or advances or other transfers of assets from  Unrestricted  Subsidiary to
the Company or a Restricted Subsidiary to the extent such

                                       8


dividends,  repayments or transfers  increase the amount of Restricted  Payments
permitted under Section 4.05 pursuant to clauseE(a)(3)(D) thereof.

                  "Consolidated  Net Worth" means the total of the amounts shown
on  the  balance  sheet  of  the  Company  and  its  consolidated  Subsidiaries,
determined on a consolidated basis in accordance with GAAP, as of the end of the
most recent fiscal  quarter of the Company  ending at least 45Edays prior to the
taking of any action for the purpose of which the  determination  is being made,
as (i) the par or stated value of all  outstanding  Capital Stock of the Company
plus (ii) paid-in capital or capital surplus relating to such Capital Stock plus
(iii) any retained earnings or earned surplus less (A) any  accumulated  deficit
and (B) any amounts attributable to Disqualified Stock.

                  "Currency  Agreement" means in respect of a Person any foreign
exchange  contract,  currency swap agreement or other similar agreement to which
such Person is a party or a beneficiary.

                  "Credit  Facility"  means  the  Credit  Agreement  dated as of
March 12,  1996,  as amended  from time to time,  among the Company,  STFI,  the
Lenders referred to therein and the Banks referred to therein, Credit Suisse, as
Administrative  Agent and Collateral Agent,  Citicorp USA, Inc. and NationsBank,
N.A., as Documentation Agent.

                  "Default" means any event which is, or after notice or passage
of time or both would be, an Event of Default.

                  "Designated   Preferred   Stock"   means  the  6%   Cumulative
Convertible Preferred Stock issued by STFI in connection with the Acquisition.

                  "Designated   Senior    Indebtedness"   means   (i) the   Bank
Indebtedness and (ii) any other Senior Indebtedness of the Company which, at the
date of  determination,  has an aggregate  principal  amount  outstanding of, or
under which, at the date of determination,  the holders thereof are committed to
lend up to, at least  $10 million and is specifically  designated by the Company
in  the  instrument   evidencing  or  governing  such  Senior   Indebtedness  as
"Designated Senior Indebtedness" for purposes of this Indenture.

                  "Disqualified  Stock" means,  with respect to any Person,  any
Capital  Stock which by its terms (or by the terms of any security into which it
is  convertible  or for which it is  exchangeable)  or upon the happening of any
event  (i) matures  or is  mandatorily  redeemable  pursuant  to a sinking  fund
obligation or otherwise, (ii) is convertible or exchangeable for Indebtedness or
Disqualified  Stock or

                                       9


(iii) is redeemable at the option of the holder thereof, in whole or in part, in
each case on or prior to the first  anniversary  of the Stated  Maturity  of the
Notes;  provided,  however,  that any  Capital  Stock that would not  constitute
Disqualified  Stock but for the provisions  thereof  giving holders  thereof the
right to require such Person to repurchase or redeem such Capital Stock upon the
occurrence  of an "asset  sale" or "change of  control"  occurring  prior to the
first  anniversary  of the Stated  Maturity  of the Notes  shall not  constitute
Disqualified  Stock  if the  "asset  sale" or  "change  of  control"  provisions
applicable to such Capital  Stock are not more  favorable to the holders of such
Capital Stock than the provisions in Section 4.07 and Section 4.12.

                  "EBITDA"  for any  period  means the sum of  Consolidated  Net
Income  plus  the  following  to  the  extent   deducted  in  calculating   such
Consolidated   Net  Income:   (a) all   income  tax  expense  of  the   Company,
(b) Consolidated Interest Expense,  (c) depreciation  expense,  (d) amortization
expense and (e) all other non-cash items reducing such  Consolidated  Net Income
(excluding  any  non-cash  item to the extent it  represents  an accrual  of, or
reserve for,  cash  disbursement  for any  subsequent  period) less all non-cash
items increasing such Consolidated Net Income (such amount  calculated  pursuant
to this  clauseE(e)  not to be less than  zero),  in each case for such  period.
Notwithstanding  the  foregoing,  the provision for taxes based on the income or
profits of, and the  depreciation  and amortization of, and other non-cash items
with respect to, a Subsidiary of the Company shall be added to Consolidated  Net
Income to compute  EBITDA only to the extent (and in the same  proportion)  that
the net income of such Subsidiary was included in calculating  Consolidated  Net
Income and only if a  corresponding  amount  would be  permitted  at the date of
determination  to be dividended to the Company by such Subsidiary  without prior
approval (that has not been obtained),  pursuant to the terms of its charter and
all agreements,  instruments,  judgments,  decrees,  orders, statuses, rules and
governmental regulations applicable to such Subsidiary or its stockholders.

                  "Exchange Act" means the  Securities  Exchange Act of 1934, as
amended.

                  "GAAP" means generally accepted  accounting  principles in the
United States of America as in effect as of the Issue Date,  including those set
forth (i) in the opinions and pronouncements of the Accounting  Principles Board
of the American Institute of Certified Public  Accountants,  (ii) statements and
pronouncements of the Financial  Accounting Standards Board, (iii) in such other
statements  by such other  entity as  approved by a  significant  segment of the
accounting  profession and (iv) the  rules and  regulations of the SEC governing
the inclusion of financial statements (including pro

                                       10


forma financial statements) in periodic reports required to be filed pursuant to
Section 13 of the Exchange Act,  including  opinions and pronouncements in staff
accounting bulletins and similar written statements from the accounting staff of
the SEC.

                  "Guarantee" means any obligation,  contingent or otherwise, of
any  Person  directly  or  indirectly  guaranteeing  any  Indebtedness  or other
obligation of any Person and any obligation,  direct or indirect,  contingent or
otherwise, of such Person (i) to purchase or pay (or advance or supply funds for
the purchase or payment of) such Indebtedness or other obligation of such Person
(whether  arising by virtue of  partnership  arrangements,  or by  agreements to
keep-well,  to purchase assets, goods, securities or services, to take-or-pay or
to maintain  financial  statement  conditions or otherwise) or (ii) entered into
for the purpose of assuring in any other manner the obligee of such Indebtedness
or other  obligation of the payment  thereof or to protect such obligee  against
loss in respect thereof (in whole or in part); provided,  however, that the term
"Guarantee"  shall not include  endorsements  for  collection  or deposit in the
ordinary  course  of  business.  The  term  "Guarantee"  used  as a  verb  has a
corresponding  meaning.  The term "Guarantor" shall mean any Person Guaranteeing
any obligation.

                  "Guaranty"  means the  Guarantee  of the Notes by STFI and the
Subsidiary Guarantors pursuant to this Indenture.

                  "Hedging  Obligations"  of any Person means the obligations of
such Person pursuant to any Interest Rate Agreement or Currency Agreement.

                  "Holder" or "Noteholder" means the Person in whose name a Note
is registered on the Registrar's books.

                  "Incur"  means issue,  assume,  Guarantee,  incur or otherwise
become liable for; provided,  however, that any Indebtedness or Capital Stock of
a Person  existing  at the time such  Person  becomes a  Subsidiary  (whether by
merger, consolidation,  acquisition or otherwise) shall be deemed to be Incurred
by such Subsidiary at the time it becomes Subsidiary. The term "Incurrence" when
used as a noun shall have a correlative meaning. The accretion of principal of a
non-interest  bearing or other discount  security shall be deemed the Incurrence
of Indebtedness.

                  "Indebtedness"  means,  with respect to any Person on any date
of determination (without duplication):

                  (i) the  principal  of and  premium  (if  any) in  respect  of
         (A) indebtedness of such Person for money borrowed and (B) indebtedness
         evidenced by notes, debentures,  bonds or

                                       11


         other  similar  instruments  for the  payment of which  such  Person is
         responsible or liable;

                  (ii) all  Capital  Lease  Obligations  of such  Person and all
         Attributable  Debt in respect of  Sale/Leaseback  Transactions  entered
         into by such Person;

                  (iii) all  obligations of such Person issued or assumed as the
         deferred  purchase price of property,  all conditional sale obligations
         of such  Person  and all  obligations  of such  Person  under any title
         retention  agreement (but excluding  trade accounts  payable arising in
         the ordinary course of business);

                  (iv) all  obligations of such Person for the  reimbursement of
         any  obligor on any letter of credit,  banker's  acceptance  or similar
         credit  transaction (other than the obligations with respect to letters
         of credit securing  obligations  (other than  obligations  described in
         (i) through  (iii) above)  entered  into  in  the  ordinary  course  of
         business of such  Person to the extent  such  letters of credit are not
         drawn  upon or,  if and to the  extent  drawn  upon,  such  drawing  is
         reimbursed no later than the third  Business Day  following  receipt by
         such  Person of a demand  for  reimbursement  following  payment on the
         letter of credit);

                  (v) the amount of all  obligations of such Person with respect
         to the redemption,  repayment or other  repurchase of any  Disqualified
         Stock or, with respect to any Subsidiary of such Person,  any Preferred
         Stock (but excluding, in each case, any accrued dividends);

                  (vi) all  obligations  of the type referred to in  clausesE(i)
         through (v) of other Persons and all dividends of other Persons for the
         payment of which, in either case, such Person is responsible or liable,
         directly or indirectly, as obligor,  Guarantor or otherwise,  including
         by means of any Guarantee;

                  (vii) all  obligations  of the type referred to in clausesE(i)
         through  (vi) of other  Persons  secured by any Lien on any property or
         asset of such Person (whether or not such obligation is assumed by such
         Person), the amount of such obligation being deemed to be the lesser of
         the value of such property or assets or the amount of the obligation so
         secured; and

                  (viii) to   the  extent  not   otherwise   included   in  this
         definition, Hedging Obligations of such Person.

                  The amount of  Indebtedness of any Person at any date shall be
the  outstanding  balance  at such  date  of all  unconditional  obligations  as
described  above  and  the  maximum

                                       12


liability, upon the occurrence of the contingency giving rise to the obligation,
of any contingent obligations at such date.

                  "Indenture"  means this  Indenture as amended or  supplemented
from time to time.

                  "Interest  Rate  Agreement"   means  any  interest  rate  swap
agreement,   interest  rate  cap  agreement  or  other  financial  agreement  or
arrangement designed to protect the Company or any Restricted Subsidiary against
fluctuations in interest rates.

                  "Investment"  in any  Person  means  any  direct  or  indirect
advance,  loan  (other than  advances to  customers  in the  ordinary  course of
business  that are recorded as accounts  receivable on the balance sheet of such
Person) or other extensions of credit  (including by way of Guarantee or similar
arrangement)  or capital  contribution  to (by means of any  transfer of cash or
other property to others or any payment for property or services for the account
or use of others), or any purchase or acquisition of Capital Stock, Indebtedness
or  other  similar  instruments  issued  by such  Person.  For  purposes  of the
definition of "Unrestricted Subsidiary",  the definition of "Restricted Payment"
and Section 4.05,  (i) "Investment"  shall include the portion (proportionate to
the Company's  equity  interest in such  Subsidiary) of the fair market value of
the net assets of any Subsidiary of the Company at the time that such Subsidiary
is  designated  an  Unrestricted  Subsidiary;  provided,  however,  that  upon a
redesignation of such Subsidiary as a Restricted  Subsidiary,  the Company shall
be  deemed to  continue  to have a  permanent  "Investment"  in an  Unrestricted
Subsidiary  equal  to  an  amount  (if  positive)  equal  to  (x) the  Company's
"Investment" in such Subsidiary at the time of such  redesignation  less (y) the
portion  (proportionate  to the Company's equity interest in such Subsidiary) of
the fair market value of the net assets of such  Subsidiary  at the time of such
redesignation;  and (ii) any  property  transferred  to or from an  Unrestricted
Subsidiary  shall  be  valued  at its  fair  market  value  at the  time of such
transfer, in each case as determined in good faith by the Board of Directors.

                  "Issue Date" means the date on which the Notes are  originally
issued.

                  "Lien"  means  any  mortgage,   pledge,   security   interest,
encumbrance, lien or charge of any kind (including any conditional sale or other
title retention agreement or lease in the nature thereof).

                  "Net  Available  Cash"  from an Asset  Disposition  means cash
payments  received  therefrom  (including  any cash payments  received by way of
deferred  payment of principal  pursuant to a note or installment  receivable or
otherwise,  but only as and

                                       13


when  received,  but excluding any other  consideration  received in the form of
assumption by the acquiring Person of Indebtedness or other obligations relating
to such properties or assets or received in any other noncash form) in each case
net of all legal,  title and recording tax expenses,  commissions and other fees
and expenses incurred,  and all Federal,  state,  provincial,  foreign and local
taxes required to be accrued as a liability under GAAP, as a consequence of such
Asset Disposition, and in each case net of all payments made on any Indebtedness
which is secured by any assets subject to such Asset Disposition,  in accordance
with the terms of any Lien  upon or other  security  agreement  of any kind with
respect to such  assets,  or which  must by its  terms,  or in order to obtain a
necessary consent to such Asset Disposition, or by applicable law be, repaid out
of the proceeds from such Asset  Disposition,  and net of all  distributions and
other payments  required to be made to minority interest holders in Subsidiaries
or joint ventures as a result of such Asset Disposition.

                  "Net Cash  Proceeds,"  with respect to any issuance or sale of
Capital  Stock,  means  the  cash  proceeds  of such  issuance  or  sale  net of
attorneys' fees,  accountants'  fees,  underwriters' or placement  agents' fees,
discounts or  commissions  and  brokerage,  consultant  and other fees  actually
incurred  in  connection  with such  issuance  or sale and net of taxes  paid or
payable as a result thereof.

                  "Officer" means the Chairman of the Board, the President,  any
Vice President, the Treasurer or the Secretary of the Company.

                  "Officers'  Certificate"  means a  certificate  signed  by two
Officers.

                  "Opinion  of  Counsel"  means a  written  opinion  from  legal
counsel who is acceptable  to the Trustee.  The counsel may be an employee of or
counsel to the Company or the Trustee.

                  "Permitted   Holders"   means   JeffreyEJ.   Steiner  and  his
"associates"  (as defined in  Rule 12b-2  under the Exchange Act as in effect on
the Issue Date, except that a person shall not be an "associate" for purposes of
this  Indenture  solely  because such person comes within the definition of such
term in clauseE(a) of such Rule) and his Affiliates.

                  "Permitted  Investment"  means an Investment by the Company or
any Restricted  Subsidiary in (i) a Restricted Subsidiary or a Person that will,
upon the making of such Investment,  become a Restricted  Subsidiary;  provided,
however,  that the primary  business of such Restricted  Subsidiary is a Related
Business;  (ii) another  Person if as a result  of such

                                       14


Investment  such  other  Person  is  merged  or  consolidated  with or into,  or
transfers  or conveys all or  substantially  all its assets to, the Company or a
Restricted Subsidiary; provided, however, that such Person's primary business is
a Related Business; (iii) Temporary Cash Investments;  (iv) receivables owing to
the Company or any Restricted  Subsidiary if created or acquired in the ordinary
course of business and payable or  dischargeable  in accordance  with  customary
trade  terms;  provided,  however,  that  such  trade  terms  may  include  such
consessionary trade terms as the Company or any such Restricted Subsidiary deems
reasonable under the circumstances;  (v) payroll, travel and similar advances to
cover  matters that are expected at the time of such  advances  ultimately to be
treated as expenses  for  accounting  purposes and that are made in the ordinary
course of business;  (vi) loans  or advances to  employees  made in the ordinary
course  of  business  consistent  with past  practices  of the  Company  or such
Restricted  Subsidiary;  and (vii) stock,  obligations or securities received in
settlement of debts created in the ordinary  course of business and owing to the
Company or any Restricted Subsidiary or in satisfaction of judgments.

                  "Person" means any individual, corporation, partnership, joint
venture,  association,  joint-stock company, trust, unincorporated organization,
government or any agency or political subdivision thereof or any other entity.

                  "Preferred  Stock",  as  applied to the  Capital  Stock of any
corporation,  means Capital Stock of any class or classes  (however  designated)
which is preferred to the payment of  dividends,  or as to the  distribution  of
assets upon any voluntary or  involuntary  liquidation  or  dissolution  of such
corporation,   over  shares  of  Capital  Stock  of  any  other  class  of  such
corporation.

                  "principal" of a Note means the principal of the Note plus the
premium, if any, payable on the Note which is due or overdue or is to become due
at the relevant time.

                  "Public Equity Offering" means an underwritten  primary public
offering of common stock of STFI pursuant to an effective registration statement
under the Securities Act.

                  "Public  Market"  means any time  after  (x) a  Public  Equity
Offering  has been  consummated  and  (y) at  least 15% of the total  issued and
outstanding  common stock of STFI has been  distributed by means of an effective
registration  statement  under the  Securities Act or sales pursuant to Rule 144
under the Securities Act.

                  "Refinance"   means,  in  respect  of  any  Indebtedness,   to
refinance,  extend, renew, refund, repay, prepay,  redeem,

                                       15


defease or retire,  or to issue other  Indebtedness  in exchange or  replacement
for, such  Indebtedness.  "Refinanced" and "Refinancing"  shall have correlative
meanings.

                  "Refinancing  Indebtedness" means Indebtedness that Refinances
any  Indebtedness  of the Company or any Restricted  Subsidiary  existing on the
Issue Date or Incurred in compliance with the Indenture  including  Indebtedness
that  Refinances  Refinancing  Indebtedness;  provided,  however,  that (i) such
Refinancing  Indebtedness  has a Stated  Maturity  no  earlier  than the  Stated
Maturity  of  the   Indebtedness   being   Refinanced,   (ii) such   Refinancing
Indebtedness  has an Average Life at the time such  Refinancing  Indebtedness is
Incurred  that is equal to or greater than the Average Life of the  Indebtedness
being  Refinanced  and (iii)  such  Refinancing  Indebtedness  has an  aggregate
principal  amount (or if Incurred with  original  issue  discount,  an aggregate
issue price) that is equal to or less than the aggregate principal amount (or if
Incurred with  original  issue  discount,  the  aggregate  accreted  value) then
outstanding  or committed  (plus fees and  expenses,  including  any premium and
defeasance  costs) under the Indebtedness  being  Refinanced;  provided further,
however, that Refinancing Indebtedness shall not  includeE(x) Indebtedness  of a
Subsidiary that Refinances  Indebtedness of the Company  orE(y) Indebtedness  of
the  Company or a  Restricted  Subsidiary  that  refinances  Indebtedness  of an
Unrestricted Subsidiary.

                  "Related  Business" means any business  related,  ancillary or
complementary to the business of the Company and the Restricted  Subsidiaries on
the Issue Date.

                  "Representative"  means any trustee,  agent or  representative
(if any) for an issue of Senior Indebtedness of the Company.

                  "Restricted  Payment" with respect to any Person means (i) the
declaration or payment of any dividends or any other  distributions  of any sort
in respect of its Capital Stock  (including  any payment in connection  with any
merger or consolidation  involving such Person) or similar payment to the direct
or indirect  holders of its Capital Stock (other than dividends or distributions
payable  solely  in its  Capital  Stock  (other  than  Disqualified  Stock)  and
dividends  or  distributions  payable  solely  to the  Company  or a  Restricted
Subsidiary,  and other than pro rata dividends or other  distributions made by a
Subsidiary that is not a Wholly Owned  Subsidiary to minority  stockholders  (or
owners of an equivalent  interest in the case of a Subsidiary  that is an entity
other than a corporation)),  (ii) the purchase,  redemption or other acquisition
or  retirement  for value of any Capital Stock of the Company held by any Person
or of any Capital stock of a Restricted  Subsidiary held by any Affiliate of the
Company  (other than a  Restricted  Subsidiary),  including  the exercise of any
option

                                       16


to exchange any Capital Stock (other than into Capital Stock of the Company that
is  not  Disqualified  Stock),  (iii) the  purchase,   repurchase,   redemption,
defeasance  or other  acquisition  or retirement  for value,  prior to scheduled
maturity,   scheduled  repayment  or  scheduled  sinking  fund  payment  of  any
Subordinated   Obligations  (other  than  the  purchase,   repurchase  or  other
acquisition of Subordinated  Obligations purchased in anticipation of satisfying
a sinking fund obligation, principal installment or final maturity, in each case
due  within  one year of the date of  acquisition)  or  (iv) the  making  of any
Investment in any Person (other than a Permitted Investment).

                  "Restricted  Subsidiary"  means any  Subsidiary of the Company
that is not an Unrestricted Subsidiary.

                  "Revolving  Credit  Provisions"  means the  provisions  in the
Credit  Facility  pursuant to which the lenders have committed to make available
to the Company a revolving  credit  facility  in a maximum  principal  amount of
$25.0 million.

                  "Sale/Leaseback  Transaction" means an arrangement relating to
property  now owned or  hereafter  acquired  whereby the Company or a Restricted
Subsidiary  transfers  such property to a Person and the Company or a Restricted
Subsidiary leases it from such Person.

                  "SEC" means the Securities and Exchange Commission.

                  "Secured  Indebtedness"  means any Indebtedness of the Company
secured by a Lien.

                  "Senior Indebtedness" with respect to any Person means (i) the
Bank Indebtedness,  (ii) Indebtedness of such Person, whether outstanding on the
Issue  Date or  thereafter  Incurred  and  (iii)  accrued  and  unpaid  interest
(including  interest  accruing  on or  after  the  filing  of  any  petition  in
bankruptcy  or  for  reorganization  relating  to  such  Person  whether  or not
post-filing   interest   is   allowed   in  such   proceeding)   in  respect  of
(A) indebtedness  of  such  Person  for  money  borrowed  and   (B) indebtedness
evidenced  by notes,  debentures,  bonds or other  similar  instruments  for the
payment of which such Person is responsible or liable unless,  in the instrument
creating or evidencing the same or pursuant to which the same is outstanding, it
is provided that such  obligations  are  subordinate  in right of payment to the
Notes or the applicable Guaranty,  as the case may be; provided,  however,  that
Senior  Indebtedness  shall not include (1) any obligation of such Person to any
Subsidiary of such Person, (2) any liability for Federal,  state, local or other
taxes owed or owing by such Person,  (3) any accounts payable or other liability
to trade  creditors  arising  in the  ordinary  course  of  business  (including
guarantees  thereof  or

                                       17


instruments  evidencing such liabilities),  (4) any  Indebtedness of such Person
(and any accrued and unpaid  interest in respect  thereof) which by its terms is
subordinate  or  junior  in any  respect  to any  other  Indebtedness  or  other
obligation of such Person or (5) that portion of any  Indebtedness  which at the
time of  Incurrence  is  Incurred  in  violation  of this  Indenture,  it  being
understood that, for purposes of this clauseE(5), all Bank Indebtedness shall at
all times constitute Senior Indebtedness.

                  "Senior Subordinated  Indebtedness" with respect to any Person
means the Notes (in the case of the  Company) or the Guaranty of such Person (in
the case of an STFC Guarantor) and, in each case, any other Indebtedness of such
Person that  specifically  provides that such Indebtedness is to rank pari passu
with the Notes or such Guaranty,  as the case may be, in right of payment and is
not  subordinated by its terms in right of payment to any  Indebtedness or other
obligation  of the Company or such STFC  Guarantor,  respectively,  which is not
Senior Indebtedness of such Person.

                  "Significant  Subsidiary" means any Restricted Subsidiary that
would be a  "Significant  Subsidiary"  of the Company within the meaning of Rule
1-02 under Regulation S-X promulgated by the SEC.

                  "Stated  Maturity"  means,  with respect to any security,  the
date  specified in such security as the fixed date on which the final payment of
principal  of  such  security  is due and  payable,  including  pursuant  to any
mandatory  redemption  provision (but excluding any provision  providing for the
repurchase  of such  security  at the  option  of the  holder  thereof  upon the
happening of any contingency unless such contingency has occurred).

                  "STFC  Guarantors"  means  each  of STFI  and  the  Subsidiary
Guarantors.

                  "STFI" means Shared  Technologies  Fairchild  Inc., a Delaware
corporation.

                  "Subordinated   Obligation"  means  any  Indebtedness  of  the
Company (whether  outstanding on the Issue Date or thereafter Incurred) which is
subordinate  or junior in right of  payment to the Notes  pursuant  to a written
agreement to the effect.

                  "Subsidiary" means, in respect of any Person, any corporation,
association,  partnership or other business entity of which more than 50% of the
total  voting  power of shares of Capital  Stock or other  interests  (including
partnership  interests)  entitled  (without  regard  to  the  occurrence  of any
contingency) to vote in the election of directors, managers,

                                       18


or trustees thereof is at the time owned or controlled,  directly or indirectly,
by (i) such Person, (ii) such Person and one or more Subsidiaries of such Person
or (iii) one or more Subsidiaries of such Person.

                  "Subsidiary  Guarantor"  means each  Subsidiary of the Company
that Guarantees any Indebtedness of the Company.

                  "Subsidiary  Guaranty"  means  the  Guaranty  by a  Subsidiary
Guarantor of the Company's obligations with respect to the Notes.

                  "Temporary  Cash  Investments"  means  any of  the  following:
(i) any  investment in direct obligations of the United States of America or any
agency thereof or obligations  guaranteed by the United States of America or any
agency  thereof,  (ii)  investments in time deposit  accounts,  certificates  of
deposit  and  money  market  deposits  maturing  within  180 days of the date of
acquisition  thereof issued by a bank or trust company which is organized  under
the laws of the United  States of  America,  any state  thereof  or any  foreign
country  recognized  by the United  States,  and which bank or trust company has
capital,  surplus and undivided profits aggregating in excess of $50,000,000 (or
the foreign currency equivalent thereof) and has outstanding debt which is rated
"A" (or such  similar  equivalent  rating) or higher by at least one  nationally
recognized  statistical  rating  organization  (as defined in Rule 436 under the
Securities  Act) or any  money-market  fund sponsored by any  registered  broker
dealer or mutual fund distributor,  (iii) repurchase  obligations with a term of
not more than 30 days for underlying securities of the types described in clause
(i) above  entered  into with a bank  meeting the  qualifications  described  in
clause (ii) above,  (iv) investments in commercial paper, maturing not more than
90 days after the date of  acquisition,  issued by a corporation  (other than an
Affiliate  of the  Company)  organized  and in  existence  under the laws of the
United States of America or any foreign country  recognized by the United States
of America with a rating at the time as of which any investment  therein is made
of "P-1" (or higher) according to Moody's Investors Service,  Inc., or "A-1" (or
higher)  according to Standard and Poor's Ratings Group and  (v) investments  in
securities  with  maturities of six months or less from the date of  acquisition
issued or fully guaranteed by any state, commonwealth or territory of the United
States of America, or by any political  subdivision or taxing authority thereof,
and rated at least "A" by  Standard  & Poor's  Ratings  Group or "A" by  Moody's
Investors Service, Inc.

                  "Term  Loan  Provisions"  means the  provisions  in the Credit
Facility  pursuant to which the lenders  commit to make available to the Company
$120.0 million of credit  facilities

                                       19


in the form of either amortizing term loans or letters of credit.

                  "TIA"  means  the  Trust  Indenture  Act  of  1939  (15EU.S.C.
ss.ss.E77aaa-77bbbb) as in effect on the date of this Indenture.

                  "Trust Officer" means any officer or assistant  officer of the
Trustee assigned by the Trustee to administer its corporate trust matters.

                  "Trustee"  means  the  party  named as such in this  Indenture
until a successor replaces it and, thereafter, means the successor.

                  "Uniform   Commercial   Code"  means  the  New  York   Uniform
Commercial Code as in effect from time to time.

                  "Unrestricted  Subsidiary"  means  (i) any  Subsidiary  of the
Company that at the time of  determination  shall be designated an  Unrestricted
Subsidiary by the Board of Directors in the manner  provided  below and (ii) any
Subsidiary of an Unrestricted  Subsidiary.  The Board of Directors may designate
any  Subsidiary  of the Company  (including  any newly  acquired or newly formed
Subsidiary) to be an  Unrestricted  Subsidiary  unless such Subsidiary or any of
its Subsidiaries owns any Capital Stock or Indebtedness of, or holds any Lien on
any property of, the Company or any other  Subsidiary of the Company that is not
a Subsidiary of the  Subsidiary to be so  designated;  provided,  however,  that
either (A) the Subsidiary to be so designated has total assets of $1,000 or less
or (B) if such Subsidiary has assets greater than $1,000, such designation would
be permitted  under  Section 4.05.  The Board of  Directors  may  designate  any
Unrestricted Subsidiary to be a Restricted Subsidiary;  provided,  however, that
immediately after giving effect to such designation  (x) the Company could Incur
$1.00 of additional  Indebtedness under Section 4.03(a) and (y) no Default shall
have occurred and be continuing.  Any such designation by the Board of Directors
shall be by the  Company to the  Trustee by  promptly  filing with the Trustee a
copy of the Board resolution  giving effect to such designation and an Officers'
Certificate  certifying  that  such  designation  complied  with  the  foregoing
provisions.

                  "U.S.  Government  Obligations"  means direct  obligations (or
certificates  representing  an ownership  interest in such  obligations)  of the
United States of America (including any agency or  instrumentality  thereof) for
the  payment of which the full faith and credit of the United  States of America
is pledged and which are not callable at the issuer's option.

                                       20


                  "Voting  Stock" of a Person means all classes of Capital Stock
or  other  interests  (including  partnership  interests)  of such  Person  then
outstanding  and normally  entitled  (without  regard to the  occurrence  of any
contingency) to vote in the election of directors, managers or trustees thereof.

                  "Wholly Owned  Subsidiary"  means a Restricted  Subsidiary all
the Capital Stock of which (other than directors'  qualifying  shares and shares
held by other Persons to the extent such shares are required by  applicable  law
to be held by a Person  other than the Company or a  Restricted  Subsidiary)  is
owned by the Company or one of more Wholly Owned Subsidiaries.

                  SECTION 1.02.  Other Definitions.

                                                     Defined in
                          Term                        Section

         "Affiliate Transaction" ................       4.08
         "Bankruptcy Law" .......................       6.01
         "Blockage Notice" ......................      10.03
         "covenant defeasance option" ...........       8.01(b)
         "Custodian" ............................       6.01
         "Default Amount"........................       6.02
         "Event of Default" .....................       6.01
         "legal defeasance option" ..............       8.01(b)
         "Legal Holiday" ........................      12.08
         "Offer" ................................       4.07
         "Offer Amount" .........................       4.07
         "Offer Period" .........................       4.07
         "pay the Notes" ........................      10.03
         "Paying Agent" .........................       2.03
         "Payment Blockage Period" ..............      10.03
         "Purchase Date" ........................       4.07
         "Registrar".............................       2.03
         "Restricted Payment" ...................       4.05
         "Successor Company" ....................       5.01

                  SECTION 1.03.  Incorporation  by Reference of Trust  Indenture
Act. This Indenture is subject to the mandatory  provisions of the TIA which are
incorporated  by reference in and made a part of this  Indenture.  The following
TIA terms have the following meanings:

                  "Commission" means the SEC.

                  "indenture securities" means the Notes and the Guaranties.

                  "indenture security holder" means a Noteholder.

                                       21


                  "indenture to be qualified" means this Indenture.

                  "indenture  trustee"  or  "institutional  trustee"  means  the
Trustee.

                  "obligor" on the indenture securities means the Company, STFI,
the Subsidiary Guarantors and any other obligor on the indenture securities.

                  All other TIA terms used in this Indenture that are defined by
the TIA, defined by TIA reference to another statute or defined by SEC rule have
the meanings assigned to them by such definitions.

                  SECTION  1.04.  Rules  of  Construction.  Unless  the  context
otherwise requires:

                  (1) a term has the meaning assigned to it;

                  (2) an  accounting term not otherwise  defined has the meaning
         assigned to it in accordance with GAAP;

                  (3) "or" is not exclusive;

                  (4) "including" means including without limitation;

                  (5) words in the singular  include the plural and words in the
         plural include the singular;

                  (6)  unsecured   Indebtedness   shall  not  be  deemed  to  be
         subordinate or junior to Secured  Indebtedness  merely by virtue of its
         nature as unsecured Indebtedness;

                  (7) the  principal amount of any noninterest  bearing or other
         discount  security at any date shall be the  principal  amount  thereof
         that would be shown on a balance  sheet of the  issuer  dated such date
         prepared in accordance with GAAP;

                  (8) the  principal  amount  of any  Preferred  Stock  shall be
         (i) the maximum  liquidation  value of such Preferred Stock or (ii) the
         maximum mandatory redemption or mandatory repurchase price with respect
         to such Preferred Stock, whichever is greater; and

                  (9) all  references  to the date  the  Notes  were  originally
         issued  shall  refer to the  date the  Initial  Notes  were  originally
         issued.

                                       22


                                    ARTICLE 2

                                    The Notes


                  SECTION  2.01.  Form and  Dating.  Provisions  relating to the
Initial Notes,  the Private  Exchange Notes and the Exchange Notes are set forth
in Appendix 1, which is hereby  incorporated  in and expressly made part of this
Indenture.  The Initial Notes and the Trustee's  certificate  of  authentication
shall be substantially in the form of ExhibitEA which is hereby  incorporated in
and expressly made a part of this  Indenture.  The Exchange  Notes,  the Private
Exchange  Notes  and  the  Trustee's  certificate  of  authentication  shall  be
substantially  in the form of  ExhibitEB,  which is hereby  incorporated  in and
expressly made a part of this Indenture.  The Notes may have notations,  legends
or  endorsements  required by law, stock exchange rule,  agreements to which the
Company is subject, if any, or usage (provided that any such notation, legend or
endorsement  is in a form  acceptable to the Company).  Each Note shall be dated
the date of its  authentication.  The terms of the Notes set forth in  Exhibit A
and ExhibitEB are part of the terms of this Indenture.

                  SECTION 2.02. Execution and Authentication. Two Officers shall
sign the Notes for the Company by manual or facsimile  signature.  The Company's
seal shall be impressed,  affixed,  imprinted or reproduced on the Notes and may
be in facsimile form.

                  If an Officer  whose  signature  is on a Note no longer  holds
that office at the time the Trustee  authenticates  the Note,  the Note shall be
valid nevertheless.

                  A Note shall not be valid until an authorized signatory of the
Trustee  manually  signs the  certificate  of  authentication  on the Note.  The
signature  shall be  conclusive  evidence  that the Note has been  authenticated
under this Indenture.

                  The  Trustee may appoint an  authenticating  agent  reasonably
acceptable to the Company to authenticate the Notes. Unless limited by the terms
of such appointment, an authenticating agent may authenticate Notes whenever the
Trustee may do so. Each  reference in this  Indenture to  authentication  by the
Trustee includes  authentication by such agent. An authenticating  agent has the
same rights as any  Registrar,  Paying Agent or agent for service of notices and
demands.

                  SECTION 2.03.  Registrar  and Paying Agent.  The Company shall
maintain an office or agency where Notes may be presented  for  registration  of
transfer or for exchange (the

                                       23


"Registrar")  and an office or agency where Notes may be  presented  for payment
(the "Paying  Agent").  The Registrar  shall keep a register of the Notes and of
their transfer and exchange.  The Company may have one or more co-registrars and
one or more  additional  paying  agents.  The term "Paying  Agent"  includes any
additional paying agent.

                  The Company shall enter into an appropriate  agency  agreement
with any Registrar,  Paying Agent or co-registrar not a party to this Indenture,
which shall  incorporate the terms of the TIA. The agreement shall implement the
provisions of this Indenture that relate to such agent. The Company shall notify
the Trustee of the name and address of any such agent.  If the Company  fails to
maintain a Registrar or Paying Agent, the Trustee shall act as such and shall be
entitled to  appropriate  compensation  therefor  pursuant to Section 7.07.  The
Company or any of its domestically  incorporated  Wholly Owned  Subsidiaries may
act as Paying Agent, Registrar or transfer agent.

                  The Company  initially  appoints the Trustee as Registrar  and
Paying Agent in connection with the Notes.

                  SECTION  2.04.  Paying Agent To Hold Money in Trust.  Prior to
each due date of the  principal  and  interest on any Note,  the  Company  shall
deposit with the Paying Agent a sum in immediately available funds sufficient to
pay such  principal and interest when so becoming due. The Company shall require
each Paying  Agent  (other than the Trustee) to agree in writing that the Paying
Agent  shall hold in trust for the  benefit of  Noteholders  or the  Trustee all
money held by the Paying  Agent for the payment of  principal  of or interest on
the Notes and shall  notify the Trustee in writing of any default by the Company
in making any such  payment.  If the Company or a Subsidiary of the Company acts
as Paying  Agent,  it shall  segregate  the money held by it as Paying Agent and
hold it as a separate  trust fund.  The Company at any time may require a Paying
Agent to pay all money held by it to the  Trustee  and to account  for any funds
disbursed by the Paying Agent.  Upon  complying  with this  Section,  the Paying
Agent shall have no further liability for the money delivered to the Trustee.

                  SECTION 2.05.  Noteholder Lists. The Trustee shall preserve in
as current a form as is reasonably practicable the most recent list available to
it of the  names  and  addresses  of  Noteholders.  If the  Trustee  is not  the
Registrar,  the Company shall  furnish to the Trustee,  in writing at least five
Business Days before each  interest  payment date and at such other times as the
Trustee may  request in writing,  a list in such form and as of such date as the
Trustee may reasonably require of the names and addresses of Noteholders.

                                       24


                  SECTION  2.06.  Replacement  Notes.  If a  mutilated  Note  is
surrendered to the Registrar or if the Holder of a Note claims that the Note has
been lost,  destroyed  or  wrongfully  taken,  the  Company  shall issue and the
Trustee  shall   authenticate  a  replacement   Note  if  the   requirements  of
Section 8-405  of the Uniform  Commercial Code are met and the Holder  satisfies
any other reasonable  requirements of the Trustee. If required by the Trustee or
the Company,  such Holder  shall  furnish an indemnity  bond  sufficient  in the
judgment of the Company and the Trustee to protect the Company, the Trustee, the
Paying Agent, the Registrar and any co-registrar from any loss which any of them
may suffer if a Note is  replaced.  The  Company  and the Trustee may charge the
Holder for their expenses in replacing a Note.

                  Every  replacement  Note is an  additional  obligation  of the
Company.

                  SECTION 2.07. Outstanding Notes. Notes outstanding at any time
are all Notes  authenticated  by the  Trustee  except for those  canceled by it,
those  delivered to it for  cancellation  and those described in this Section as
not outstanding.  A Note does not cease to be outstanding because the Company or
an Affiliate of the Company holds the Note.

                  If a Note is replaced  pursuant to Section 2.06,  it ceases to
be outstanding  unless the Trustee and the Company receive proof satisfactory to
them that the replaced Note is held by a bona fide purchaser.

                  If  the  Paying  Agent  segregates  and  holds  in  trust,  in
accordance  with this  Indenture,  on a redemption  date or maturity  date money
sufficient to pay all  principal and interest  payable on that date with respect
to the Notes (or portions  thereof) to be redeemed or maturing,  as the case may
be,  and the  Paying  Agent is not  prohibited  from  paying  such  money to the
Noteholders  on that date pursuant to the terms of this  Indenture,  then on and
after that date such Notes (or portions  thereof)  cease to be  outstanding  and
interest on them ceases to accrue.

                  SECTION 2.08.  Temporary  Notes.  Until  definitive  Notes are
ready for delivery,  the Company may prepare and the Trustee shall  authenticate
temporary  Notes.  Temporary  Notes  shall  be  substantially  in  the  form  of
definitive Notes but may have variations that the Company considers  appropriate
for temporary Notes.  Without  unreasonable delay, the Company shall prepare and
the Trustee shall authenticate definitive Notes and deliver them in exchange for
temporary Notes.

                  SECTION  2.09.  Cancellation.  The  Company  at any  time  may
deliver  Notes to the Trustee for  cancellation.  The  Registrar  and the Paying
Agent  shall  forward  to  the  Trustee

                                       25


any Notes surrendered to them for registration of transfer, exchange or payment.
The  Trustee  and no one else shall  cancel and  destroy  (subject to the record
retention   requirements  of  the  Exchange  Act)  all  Notes   surrendered  for
registration  of  transfer,  exchange,  payment or  cancellation  and  deliver a
certificate of such  destruction  to the Company unless the Company  directs the
Trustee to deliver canceled Notes to the Company.  The Company may not issue new
Notes to replace  Notes it has  redeemed,  paid or  delivered to the Trustee for
cancellation.

                  SECTION 2.10. Defaulted Interest. If the Company defaults in a
payment of interest on the Notes, the Company shall pay defaulted interest (plus
interest on such defaulted  interest to the extent lawful) in any lawful manner.
The Company shall pay the defaulted  interest to the persons who are Noteholders
on a subsequent  special record date. The Company shall fix or cause to be fixed
any such special record date and payment date which special record date shall be
10 days  before such payment date and shall  promptly mail to each  Noteholder a
notice that states the special  record date,  the payment date and the amount of
defaulted interest to be paid.

                  SECTION  2.11.EECUSIP  Numbers.EEThe  Company in  issuing  the
Notes may use "CUSIP" numbers (if then generally in use) and, if so, the Trustee
shall use "CUSIP"  numbers in notices of redemption as a convenience to Holders;
provided, however, that any such notice may state that no representation is made
as to the  correctness  of such  numbers  either as  printed  on the Notes or as
contained in any notice of a redemption  and that reliance may be placed only on
the other  identification  numbers printed on the Notes, and any such redemption
shall not be affected by any defect in or omission of such numbers.


                                    ARTICLE 3

                                   Redemption

                  SECTION  3.01.  Notices to Trustee.  If the Company  elects to
redeem Notes pursuant to  paragraphE5 of the Notes,  it shall notify the Trustee
in writing of the redemption  date, the principal amount of Notes to be redeemed
and the paragraph of the Notes pursuant to which the redemption will occur.

                  The Company shall give each notice to the Trustee provided for
in this Section at least 60 days before the  redemption  date unless the Trustee
consents to a shorter  period.  Such notice shall be accompanied by an Officers'
Certificate  and an Opinion of Counsel  from the Company to the

                                       26


effect that such redemption will comply with the conditions herein.

                  SECTION 3.02. Selection of Notes To Be Redeemed. If fewer than
all the Notes are to be  redeemed,  the  Trustee  shall  select  the Notes to be
redeemed pro rata or by lot or by a method that complies with  applicable  legal
and securities  exchange  requirements,  if any, and that the Trustee  considers
fair and appropriate  and in accordance with methods  generally used at the time
of selection by fiduciaries in similar circumstances. The Trustee shall make the
selection from  outstanding  Notes not  previously  called for  redemption.  The
Trustee may select for  redemption  portions of the principal of Notes that have
denominations larger than $1,000. Notes and portions of them the Trustee selects
shall be in amounts of $1,000 or a whole multiple of $1,000.  Provisions of this
Indenture  that apply to Notes called for  redemption  also apply to portions of
Notes called for  redemption.  The Trustee shall notify the Company  promptly of
the Notes or portions of Notes to be redeemed.

                  SECTION 3.03.  Notice of Redemption.  At least 30 days but not
more than 60 days before a date for redemption of Notes,  the Company shall mail
a  notice  of  redemption  by  first-class  mail to each  Holder  of Notes to be
redeemed.

                  The notice  shall  identify the Notes to be redeemed and shall
state:

                  (1) the redemption date;

                  (2) the redemption price;

                  (3) the name and address of the Paying Agent;

                  (4) that  Notes called for  redemption  must be surrendered to
         the Paying Agent to collect the redemption price;

                  (5) if  fewer  than  all  the  outstanding  Notes  are  to  be
         redeemed,  the  identification  and principal amounts of the particular
         Notes to be redeemed;

                  (6) that,   unless  the   Company   defaults  in  making  such
         redemption  payment or the Paying Agent is prohibited  from making such
         payment pursuant to the terms of this Indenture,  interest on Notes (or
         portion  thereof)  called for redemption  ceases to accrue on and after
         the  redemption  date and the Accreted Value of the Notes (or portions)
         thereof  called  for  redemption  cease to  increase  on or  after  the
         redemption date; and

                                       27


                  (7) that no  representation  is made as to the  correctness or
         accuracy of the CUSIP number,  if any, listed in such notice or printed
         on the Notes.

                  At the Company's request, the Trustee shall give the notice of
redemption in the Company's  name and at the Company's  expense.  In such event,
the Company  shall  provide the Trustee  with the  information  required by this
Section.

                  SECTION 3.04.  Effect of Notice of Redemption.  Once notice of
redemption is mailed,  Notes called for redemption become due and payable on the
redemption  date  and at the  redemption  price  stated  in the  notice.  On the
redemption  date, such Notes shall be paid at the redemption price stated in the
notice,  plus accrued interest to the redemption date. Failure to give notice or
any  defect in the notice to any Holder  shall not  affect the  validity  of the
notice to any other Holder.

                  SECTION  3.05.  Deposit  of  Redemption  Price.  Prior  to the
redemption  date,  the Company  shall  deposit with the Paying Agent (or, if the
Company or a Subsidiary of the Company is the Paying Agent,  shall segregate and
hold in trust) money,  in  immediately  available  funds,  sufficient to pay the
redemption  price of and  accrued  interest  on all Notes to be redeemed on that
date other than Notes or portions of Notes called for redemption which have been
delivered by the Company to the Trustee for cancellation.

                  SECTION 3.06. Notes Redeemed in Part. Upon surrender of a Note
that is  redeemed  in part,  the Company  shall  execute  and the Trustee  shall
authenticate  for the  Holder  (at the  Company's  expense)  a new Note equal in
principal amount to the unredeemed portion of the Note surrendered.


                                    ARTICLE 4

                                    Covenants


                  SECTION 4.01. Payment of Notes. The Company shall promptly pay
the  principal  of and  interest  on the Notes on the  dates  and in the  manner
provided in the Notes and in this Indenture.  Principal and interest  (including
any redemption  price in connection  with any redemption  pursuant to ArticleE3)
shall be  considered  paid on the date due if on such  date the  Trustee  or the
Paying Agent holds in accordance with this Indenture money sufficient to pay all
principal and interest (or in the case of any such  redemption,  such redemption
price) then due and the Trustee or the Paying Agent,  as the case may be, is not
prohibited  from paying such money to the

                                       28


Noteholders on that date pursuant to the terms of this Indenture.

                  The Company shall pay interest on overdue principal (including
any redemption price) at the rate specified  therefor in the Notes, and it shall
pay interest on overdue  installments of interest at the same rate to the extent
lawful.

                  SECTION 4.02.EESEC Reports.  Notwithstanding  that the Company
may  not be  required  to  remain  subject  to  the  reporting  requirements  of
Section 13 or 15(d) of the Exchange Act, the Company shall file with the SEC and
provide  the  Trustee  and  Noteholders   with  such  annual  reports  and  such
information,  documents and other reports as are  specified in  SectionsE13  and
15(d) of the Exchange Act and applicable to a U.S.  corporation  subject to such
Sections,  such  information,  documents  and other  reports  to be so filed and
provided at the times  specified for the filing of such  information,  documents
and reports under such Sections.

                  SECTION 4.03.  Limitation on  Indebtedness.  (a)  The  Company
shall not Incur, directly or indirectly, any Indebtedness unless, on the date of
such Incurrence,  the  Consolidated  Coverage Ratio would be equal to or greater
than 2.0 to 1.0 if such Indebtedness is Incurred prior to March 1,  1998 or 2.25
to 1.0 if such Indebtedness is Incurred thereafter.

                  (b)  Notwithstanding  Section 4.03(a),  the  Company may Incur
any or all of the following Indebtedness:

                   (1) Indebtedness  Incurred  pursuant to the Revolving  Credit
         Provisions  of the  Credit  Facility  or  any  other  revolving  credit
         facility in a principal  amount  which,  when taken  together  with the
         principal amount of all other  Indebtedness  Incurred  pursuant to this
         Section 4.03(b)(1) and then outstanding, does not exceed $25.0 million;

                   (2) Indebtedness   Incurred   pursuant   to  the  Term   Loan
         Provisions of the Credit Facility or any other credit or loan agreement
         or  indenture  in an  aggregate  principal  amount  which,  when  taken
         together with the principal amount of all other  Indebtedness  Incurred
         pursuant  to this  Section 4.03(b)(2)  and then  outstanding,  does not
         exceed   (A) $120.0 million   less  (B) the  aggregate  amount  of  all
         principal repayments of any such Indebtedness made after the Issue Date
         (other  than  any such  principal  repayments  made as a result  of the
         Refinancing of any such Indebtedness);

                  (3) Indebtedness   owed  to  and  held  by  a   Wholly   Owned
         Subsidiary; provided, however, that any subsequent issuance or transfer
         of any Capital Stock which results in any such Wholly

                                       29


         Owned  Subsidiary  ceasing  to be a  Wholly  Owned  Subsidiary  or  any
         subsequent  transfer of such Indebtedness (other than to another Wholly
         Owned  Subsidiary)  shall be deemed,  in each case, to  constitute  the
         Incurrence of such Indebtedness by the Company;

                  (4) the Notes;

                  (5) Indebtedness  outstanding  on the Issue Date  (other  than
         Indebtedness described in SectionsE4.03(b)(1), (2), (3) or (4));

                  (6) Refinancing   Indebtedness   in  respect  of  Indebtedness
         Incurred pursuant to Section 4.03(a) or pursuant to SectionsE4.03(b)(4)
         or (5) or this Section 4.03(b)(6);

                  (7) Hedging Obligations consisting of Interest Rate Agreements
         directly  related  to  Indebtedness  permitted  to be  Incurred  by the
         Company pursuant to this Indenture; and

                  (8) Indebtedness  in  an  aggregate  principal  amount  which,
         together with all other Indebtedness of the Company  outstanding on the
         date  of  such  Incurrence  (other  than   Indebtedness   permitted  by
         SectionsE4.03(b)(1)   through  (7)  above  or  Section 4.03(a)),   when
         aggregated  with  all  Indebtedness   then   outstanding   pursuant  to
         Section 4.04(a)(v), does not exceed $5.0 million.

                  (c)  Notwithstanding  the  foregoing,  the  Company  shall not
Incur any Indebtedness  pursuant to  Section 4.03(b) if the proceeds thereof are
used, directly or indirectly,  to Refinance any Subordinated  Obligations unless
such Indebtedness shall be subordinated to the Notes to at least the same extent
as such Subordinated Obligations.

                  (d)  Notwithstanding   Section 4.03(a)   and   Section 4.03(b)
above,  (i) the Company shall not Incur any Indebtedness if such Indebtedness is
subordinate  or junior in  ranking in any  respect  to any  Senior  Indebtedness
unless such  Indebtedness  is Senior  Subordinated  Indebtedness or is expressly
subordinated  in  right of  payment  to  Senior  Subordinated  Indebtedness  and
(ii) the  Company shall not Incur any Secured  Indebtedness  which is not Senior
Indebtedness unless  contemporaneously  therewith effective provision is made to
secure the Notes equally and ratably with such Secured  Indebtedness for so long
as such Secured Indebtedness is secured by a Lien.

                  (e)  For   purposes  of  determining   compliance   with  this
Section 4.03,  (i) in the event that an item of Indebtedness  meets the criteria
of more than one of the types of Indebtedness  described above, the Company,  in
its  sole  discretion,  will  classify  such  item of  Indebtedness  and only

                                       30


be required to include  the amount and type of such  Indebtedness  in one of the
above clauses and (ii) an item of Indebtedness  may be divided and classified in
more than one of the types of Indebtedness described above.

                  SECTION 4.04.  Limitation on Indebtedness  and Preferred Stock
of Restricted  Subsidiaries.  (a)  The  Company shall not permit any  Restricted
Subsidiary to Incur, directly or indirectly, any Indebtedness or Preferred Stock
except:

               (i) Indebtedness  or  Preferred  Stock  issued to and held by the
         Company  or a Wholly  Owned  Subsidiary;  provided,  however,  that any
         subsequent  issuance or transfer of any Capital  Stock which results in
         any  such  Wholly  Owned  Subsidiary  ceasing  to  be  a  Wholly  Owned
         Subsidiary or any subsequent transfer of such Indebtedness or Preferred
         Stock (other than to the Company or a Wholly Owned Subsidiary) shall be
         deemed, in each case, to constitute the Incurrence of such Indebtedness
         or Preferred Stock by the issuer thereof;

               (ii) Indebtedness or Preferred Stock of a Subsidiary Incurred and
         outstanding  on or  prior  to the date on  which  such  Subsidiary  was
         acquired by the Company  (other than  Indebtedness  or Preferred  Stock
         Incurred in  connection  with,  or to provide all or any portion of the
         funds or credit  support  utilized to  consummate,  the  transaction or
         series of related transactions pursuant to which such Subsidiary became
         a  Subsidiary   or  was  acquired  by  the  Company)  and   Refinancing
         Indebtedness Incurred in respect thereof; provided,  however, that such
         Refinancing   Indebtedness   shall   only  be   permitted   under  this
         Section 4.04(a)(ii)  to the  extent  Incurred  by the  Subsidiary  that
         originally Incurred such Indebtedness;

               (iii) in the case of a Subsidiary Guarantor, (A) any Guarantee of
         Indebtedness  of the  Company and (B) any  Indebtedness  consisting  of
         Liens securing any Guarantee permitted pursuant to this clauseE(iii);

               (iv) Indebtedness  or  Preferred  Stock  outstanding on the Issue
         Date  (other  than   Indebtedness   described   in   Section 4.04(a)(i)
         orESection 4.04(a)(ii));

               (v) Indebtedness   represented   by  Capital  Lease   Obligations
         Incurred for the purpose of  financing  all or any part of the purchase
         price of equipment used in a Related  Business or Incurred to Refinance
         any  such  purchase  price;  provided,  however,  that  the  amount  of
         Indebtedness    outstanding    at   any   time    pursuant    to   this
         Section 4.04(a)(v),   when  aggregated  with  all   Indebtedness   then
         outstanding   pursuant   to   Section 4.03(b)(8),   shall  not   exceed
         $5.0 million; and

                                       31


               (vi) Refinancing Indebtedness Incurred in respect of Indebtedness
         or  Preferred  Stock  referred  to  in   Section 4.04(a)(iv)   or  this
         Section 4.04(a)(vi).

               (b) Notwithstanding  the foregoing,  the Company shall not permit
any Subsidiary  Guarantor to Incur any Indebtedness  pursuant to Section 4.04(a)
if the proceeds  thereof are used,  directly or  indirectly,  to  Refinance  any
Subordinated  Obligations of such Subsidiary  Guarantor unless such Indebtedness
shall be subordinated to the Subsidiary Guaranty of such Subsidiary Guarantor to
at least the same extent as such Subordinated Obligations.

               (c)  For   purposes   of   determining   compliance   with   this
Section 4.04,  (i) in the event that an item of Indebtedness  meets the criteria
of more than one of the types of Indebtedness  described above, the Company,  in
its  sole  discretion,  will  classify  such  item of  Indebtedness  and only be
required to include the amount and type of such Indebtedness in one of the above
clauses and (ii) an item of  Indebtedness  may be divided and classified in more
than one of the types of Indebtedness described above.

               (d)  Notwithstanding  Section 4.04(a)  and  Section 4.04(b),  the
Company shall not permit any Subsidiary  Guarantor to Incur (i) any Indebtedness
if such  Indebtedness  is subordinate or junior in ranking in any respect to any
Senior  Indebtedness of such Subsidiary  Guarantor,  unless such Indebtedness is
Senior  Subordinated  Indebtedness of such Subsidiary  Guarantor or is expressly
subordinated  in right of payment to Senior  Subordinated  Indebtedness  of such
Subsidiary  Guarantor  or  (ii) any  Secured  Indebtedness  that  is not  Senior
Indebtedness of such Subsidiary  Guarantor  unless  contemporaneously  therewith
effective provision is made to secure such Subsidiary  Guarantor's  Guarantee of
the Notes equally and ratably with such Secured Indebtedness for so long as such
Secured Indebtedness is secured by a Lien.

               SECTION 4.05. Limitation on Restricted Payments. (a)  The Company
shall  not,  and  shall  not  permit  any  Restricted  Subsidiary,  directly  or
indirectly,  to make a  Restricted  Payment  if at the time the  Company or such
Restricted  Subsidiary makes such Restricted  Payment:  (1) a Default shall have
occurred and be continuing (or would result  therefrom);  or (2) the  Company is
not  able  to  Incur  an   additional   $1.00  of   Indebtedness   pursuant   to
Section 4.03(a);  or (3) the aggregate amount of such Restricted Payment and all
other Restricted  Payments since the Issue Date would exceed the sum of: (A) 50%
of the Adjusted  Consolidated  Net Income accrued during the period  (treated as
one  accounting  period) from the  beginning of the fiscal  quarter  immediately
following the Issue Date to the end of the most recent fiscal  quarter ending at
least 45 days prior to the date of such  Restricted  Payment  (or,  in case

                                       32


such  Adjusted  Consolidated  Net Income shall be a deficit,  minus 100% of such
deficit);  (B) the  aggregate Net Cash Proceeds received by the Company from the
issuance or sale of its Capital Stock (other than Disqualified Stock) subsequent
to the Issue Date (other than an issuance or sale to a Subsidiary of the Company
and other than an issuance or sale to an employee  stock  ownership plan or to a
trust  established by the Company or any of its  Subsidiaries for the benefit of
their employees) plus the aggregate cash capital  contributions  received by the
Company  subsequent to the Issue Date;  (C) the amount by which  Indebtedness of
the Company is reduced on the  Company's  balance  sheet upon the  conversion or
exchange  (other than by a Subsidiary  of the Company)  subsequent  of the Issue
Date, of any Indebtedness of the Company convertible or exchangeable for Capital
Stock  (other than  Disqualified  Stock) of the Company  (less the amount of any
cash, or the fair value of any other  property,  distributed by the Company upon
such conversion or exchange);  and (D) an amount equal to the sum of (i) the net
reduction in Investments in Unrestricted  Subsidiaries resulting from dividends,
repayments  of loans or advances or other  transfers of assets,  in each case to
the Company or any Restricted  Subsidiary from  Unrestricted  Subsidiaries,  and
(ii) the  portion  (proportionate  to the  Company's  equity  interest  in  such
Subsidiary)  of the fair  market  value  of the net  assets  of an  Unrestricted
Subsidiary at the time such  Unrestricted  Subsidiary is designated a Restricted
Subsidiary;  provided,  however, that the foregoing sum shall not exceed, in the
case of any Unrestricted  Subsidiary,  the amount of Investments previously made
(and  treated  as a  Restricted  Payment)  by  the  Company  or  any  Restricted
Subsidiary in such Unrestricted Subsidiary.

               (b) The provisions of Section 4.05(a) shall not prohibit: (i) any
purchase or  redemption  of Capital  Stock or  Subordinated  Obligations  of the
Company  made by  exchange  for,  or out of the  proceeds  of the  substantially
concurrent  sale of or cash capital  contribution in respect of Capital Stock of
the Company (other than  Disqualified  Stock and other than Capital Stock issued
or sold to a Subsidiary of the Company or an employee stock ownership plan or to
a trust established by the Company or any of its Subsidiaries for the benefit of
their employees);  provided, however, that (A) such purchase or redemption shall
be excluded in the calculation of the amount of Restricted  Payments and (B) the
Net Cash Proceeds from such sale and any such cash capital contribution shall be
excluded  from the  calculation  of amounts under  Section 4.05(a)(3)(B)  above;
(ii) any purchase,  repurchase,  redemption,  defeasance or other acquisition or
retirement for value of Subordinated Obligations of the Company made by exchange
for,  or  out  of  the  proceeds  of  the  substantially   concurrent  sale  of,
Indebtedness  of the  Company  which is  permitted  to be  Incurred  pursuant to
Section 4.03;  provided,  however, that such purchase,  repurchase,  redemption,
defeasance or other acquisition or

                                       33


retirement  for value  shall be  excluded  in the  calculation  of the amount of
Restricted  Payments;  (iii) dividends  paid  within  60 days  after the date of
declaration  thereof if at such date of  declaration  such  dividend  would have
complied with this covenant;  provided, however, that, at the time of payment of
such dividend, no other Default shall have occurred and be continuing (or result
therefrom),  provided further,  however, that such dividend shall be included in
the calculation of the amount of Restricted  Payments;  (iv) the declaration and
payment of a dividend or other  distribution by the Company to STFI the proceeds
of which are to be used promptly by STFI for (A) the  payment of cash  dividends
on the Designated Preferred Stock at a rate not in excess of 6% per annum of the
liquidation  preference of the Designated  Preferred Stock or (B) the payment of
cash dividends on the STFI's  SeriesEC  Preferred  Stock and SeriesED  Preferred
Stock;  provided,  however,  that the maximum  amount of cash  dividends on such
SeriesEC Preferred Stock and SeriesED Preferred Stock in any calendar year shall
not exceed  $0.5Emillion;  provided further,  however,  that the payments of all
such  dividends and  distributions  made pursuant to this  clauseE(iv)  shall be
included in the  calculation  of the amount of Restricted  Payments;  or (v) the
declaration  and payment of a dividend or other  distribution  by the Company to
STFI the proceeds of which are to be used for  (A) legal,  accounting  and other
professional  fees  incurred by STFI and any fees and  expenses  payable by STFI
that are associated with registration statements and periodic reports filed with
the SEC or (B) the dividends,  redemptions and other payments to be made by STFI
on the Issue Date in connection with the Acquisition;  provided,  however,  that
the  payments of all such  dividends  and  distributions  made  pursuant to this
clauseE(v)  shall be excluded  in the  calculation  of the amount of  Restricted
Payments.

               SECTION 4.06.  Limitation on Restrictions on  Distributions  from
Restricted  Subsidiaries.EEThe  Company  shall  not,  and shall not  permit  any
Restricted Subsidiary to, create or otherwise cause or permit to exist or become
effective  any  consensual  encumbrance  or  restriction  on the  ability of any
Restricted  Subsidiary  (a) to pay dividends or make any other  distributions on
its  Capital  Stock  to the  Company  or a  Restricted  Subsidiary  or  pay  any
Indebtedness  owed to the  Company,  (b) to  make any loans or  advances  to the
Company or (c) to transfer any of its property or assets to the Company, except:
(i) any  encumbrance  or  restriction  pursuant to an  agreement in effect at or
entered into on the Issue Date; (ii) any encumbrance or restriction with respect
to a Restricted Subsidiary pursuant to an agreement relating to any Indebtedness
Incurred  by such  Restricted  Subsidiary  on or prior to the date on which such
Restricted  Subsidiary  was  acquired  by the Company  (other than  Indebtedness
Incurred as  consideration  in, or to provide all or any portion of the

                                       34


funds or credit  support  utilized to consummate,  the  transaction or series of
related  transactions  pursuant  to which such  Restricted  Subsidiary  became a
Restricted  Subsidiary or was acquired by the Company) and  outstanding  on such
date; (iii) any  encumbrance or restriction pursuant to an agreement effecting a
Refinancing of  Indebtedness  Incurred  pursuant to an agreement  referred to in
clause (i) or (ii) of this Section 4.06 or this clause (iii) or contained in any
amendment to an agreement referred to in clause (i) or (ii) of this Section 4.06
or this clause (iii); provided,  however, that the encumbrances and restrictions
with respect to such  Restricted  Subsidiary  contained in any such  refinancing
agreement  or  amendment  are  no  less  favorable  to  the   Noteholders   than
encumbrances  and  restrictions  with  respect  to  such  Restricted  Subsidiary
contained  in  such   agreements;   (iv) any  such  encumbrance  or  restriction
consisting of customary  nonassignment  provisions in leases governing leasehold
interests  to the extent such  provisions  restrict the transfer of the lease or
the  property  leased  thereunder;  (v) in  the  case  of  clause  (c)  of  this
Section 4.06,   restrictions  contained  in  security  agreements  or  mortgages
securing Indebtedness of a Restricted Subsidiary to the extent such restrictions
restrict the transfer of the property  subject to such  security  agreements  or
mortgages;  and (vi) any  restriction  with  respect to a Restricted  Subsidiary
imposed pursuant to an agreement entered into for the sale or disposition of all
or substantially  all the Capital Stock or assets of such Restricted  Subsidiary
pending the closing of such sale or disposition.

               SECTION 4.07. Limitation on Sales of Assets and Subsidiary Stock.
(a)  The  Company shall not, and shall not permit any Restricted  Subsidiary to,
directly or indirectly,  consummate any Asset Disposition unless (i) the Company
or such Restricted  Subsidiary receives  consideration at the time of such Asset
Disposition  at least equal to the fair market value  (including as to the value
of all  noncash  consideration),  as  determined  in good  faith by the Board of
Directors,  of the shares and assets  subject to such Asset  Disposition  and at
least  85%  of  the  consideration  thereof  received  by the  Company  or  such
Restricted  Subsidiary  is in the form of cash or cash  equivalents  and (ii) an
amount equal to 100% of the Net Available  Cash from such Asset  Disposition  is
applied  by the  Company  (or such  Restricted  Subsidiary,  as the case may be)
(A) first,  to the extent the Company elects (or is required by the terms of any
Senior  Indebtedness  of the Company),  to prepay,  repay,  redeem or repurchase
Senior  Indebtedness of the Company or Indebtedness (other than any Disqualified
Stock or, in the case of a Subsidiary Guarantor,  any Subordinated  Obligations)
of a Wholly Owned Subsidiary (in each case other than  Indebtedness  owed to the
Company or an Affiliate  of the  Company)  within one year from the later of the
date of such  Asset  Disposition  or the  receipt  of such Net  Available  Cash;
(B) second,  to the  extent of the  balance  of such Net  Available  Cash  after
application in accordance with clause (A), to the extent the Company elects,  to
invest in  Additional  Assets within one year from the later of the date of such
Asset Disposition or the receipt of such Net

                                       35


Available  Cash;  (C) third,  to the extent of the balance of such Net Available
Cash in excess of $250,000 in any fiscal year after  application  in  accordance
with  clausesE(A)  and (B), to make an offer to the holders of the Notes (and to
holders of other Senior  Subordinated  Indebtedness of the Company designated by
the Company) to purchase Notes (and such other Senior Subordinated Indebtedness)
pursuant to and subject to Section 4.07(b); and (D) fourth, to the extent of the
balance of such Net Available Cash after  application in accordance with clauses
(A),  (B) and (C) to (x) the  acquisition  by the  Company  or any Wholly  Owned
Subsidiary of Additional Assets or (y) the prepayment,  repayment or purchase of
Indebtedness  (other than any  Disqualified  Stock) of the  Company  (other than
Indebtedness  owned to an  Affiliate  of the  Company)  or  Indebtedness  of any
Subsidiary  (other than  Indebtedness owed to the Company or an Affiliate of the
Company), in each case within one year from the later of the receipt of such Net
Available  Cash  and  the  date  the  offer  described  in   Section 4.07(b)  is
consummated,  provided,  however,  that,  in  connection  with  any  prepayment,
repayment or purchase of Indebtedness  pursuant to clause (A), (C) or (D) above,
the Company or such Restricted  Subsidiary  shall retire such  Indebtedness  and
shall cause the related loan commitment (if any) to be permanently reduced in an
amount  equal  to  the  principal  amount  so  prepaid,   repaid  or  purchased.
Notwithstanding the foregoing provisions of this paragraph,  the Company and the
Restricted Subsidiaries shall not be required to apply any Net Available Cash in
accordance  with this  paragraph  except to the extent  that the  aggregate  Net
Available  Cash from all Asset  Dispositions  which is not applied in accordance
with this paragraph exceeds  $5.0 million.  Pending application of Net Available
Cash pursuant to this  covenant,  such Net  Available  Cash shall be invested in
Permitted Investments.

               For the purposes of this  Section 4.07,  the following are deemed
to be  cash or cash  equivalents:  (x) the  assumption  of  Indebtedness  of the
Company or any  Restricted  Subsidiary  and the  release of the  Company or such
Restricted Subsidiary from all liability on such Indebtedness in connection with
such  Asset  Disposition  and  (y) securities  received  by the  Company  or any
Restricted  Subsidiary  from the transferee  that are promptly  converted by the
Company or such Restricted Subsidiary into cash.

               (b) In the  event  of an  Asset  Disposition  that  requires  the
purchase of the Notes (and other Senior Subordinated  Indebtedness)  pursuant to
clause  (ii)(C) of

                                       36


Section 4.07(a),  the  Company  will be  required  to  purchase  Notes  tendered
pursuant to an offer by the Company for the Notes (and other Senior Subordinated
Indebtedness)  (the "Offer") at a purchase price of 100% of their Accreted Value
plus  accrued  but  unpaid  interest  (or,  in  respect  of  such  other  Senior
Subordinated Indebtedness,  such lesser price, if any, as may be provided for by
the terms of such  Senior  Subordinated  Indebtedness)  in  accordance  with the
procedures  (including prorating in the event of oversubscription)  set forth in
Section 4.07(c).  If the aggregate purchase price of Notes (and any other Senior
Subordinated  Indebtedness)  tendered pursuant to the Offer is less than the Net
Available Cash allotted to the purchase thereof, the Company will be required to
apply    the    remaining    Net    Available    Cash   in    accordance    with
Section 4.07(a)(ii)(D).  The Company shall not be required to make such an offer
to purchase Notes (and other Senior Subordinated  Indebtedness) pursuant to this
Section 4.07 if the Net Available Cash available  therefor (after application of
the proceeds as provided in clauses (A) and (B) of  Section 4.07(a)(ii)) is less
than $5.0 million (which lesser amount shall be carried  forward for purposes of
determining  whether such an offer is required  with  respect to any  subsequent
Asset Disposition).

               (c)   (1)  Promptly,  and in any event within  10 days  after the
Company  becomes  obligated to make an Offer,  the Company shall be obligated to
deliver to the Trustee and send, by first-class  mail to each Holder,  a written
notice  stating  that the  Holder may elect to have his Notes  purchased  by the
Company  either in whole or in part  (subject  to  prorationing  as  hereinafter
described  in the event the Offer is  oversubscribed)  in integral  multiples of
$1,000 of principal amount,  at the applicable  purchase price. The notice shall
specify a  purchase  date not less than 30 days nor more than 60 days  after the
date of such notice (the  "Purchase  Date") and shall  contain such  information
concerning  the business of the Company which the Company in good faith believes
will enable such Holders to make an informed  decision  (which at a minimum will
include  (i) the  most  recently  filed  Annual  Report on Form 10-K  (including
audited  consolidated  financial  statements)  of the  Company,  the most recent
subsequently  filed Quarterly Report on Form 10-Q and any Current Report on Form
8-K of the Company filed subsequent to such Quarterly Report, other than Current
Reports  describing  Asset  Dispositions  otherwise  described  in the  offering
materials (or corresponding  successor reports),  (ii) a description of material
developments in the Company's  business  subsequent to the date of the latest of
such Reports, and (iii) if material, appropriate pro forma financial information
and all  instructions  and materials  necessary to tender Notes  pursuant to the
Offer, together with the information contained in clause (3).

                                       37


               (2)  Not  later  than the date upon  which  written  notice of an
Offer is delivered to the Trustee as provided  below,  the Company shall deliver
to the Trustee an Officers'  Certificate  as to (i) the amount of the Offer (the
"Offer  Amount"),  (ii) the  allocation of the Net Available Cash from the Asset
Dispositions pursuant to which such Offer is being made and (iii) the compliance
of such  allocation  with the provisions of  Section 4.07(a).  On such date, the
Company shall also  irrevocably  deposit with the Trustee or with a paying agent
(or, if the  Company is acting as its own paying  agent,  segregate  and hold in
trust) in Temporary Cash Investments,  maturing on the day prior to the Purchase
Date or on the  Purchase  Date if funds  are  immediately  available  by open of
business  an  amount  equal  to the  Offer  Amount  to be held  for  payment  in
accordance  with the  provisions  of this  Section.  Upon the  expiration of the
period for which the Offer remains open (the "Offer Period"),  the Company shall
deliver to the Trustee for cancellation the Notes or portions thereof which have
been  properly  tendered to and are to be accepted by the  Company.  The Trustee
shall, on the Purchase Date, mail or deliver payment to each tendering Holder in
the amount of the purchase price. In the event that the aggregate purchase price
of the Notes  delivered  by the  Company  to the  Trustee is less than the Offer
Amount,  the Trustee shall deliver the excess to the Company  immediately  after
the  expiration  of the Offer Period for  application  in  accordance  with this
Section.

               (3)  Holders  electing to have a Note  purchased will be required
to surrender the Note, with an appropriate  form duly completed,  to the Company
at the address specified in the notice at least three Business Days prior to the
Purchase  Date.  Holders  will be  entitled to  withdraw  their  election if the
Trustee or the Company  receives  not later than one  Business  Day prior to the
Purchase Date, a telegram, telex, facsimile transmission or letter setting forth
the name of the Holder,  the Accreted  Value of the Note which was delivered for
purchase  by the Holder and a  statement  that such  Holder is  withdrawing  his
election to have such Note  purchased.  If at the expiration of the Offer Period
the aggregate  Accreted Value of Notes  surrendered by Holders exceeds the Offer
Amount,  the Company  shall select the Notes to be purchased on a pro rata basis
(with such adjustments as may be deemed  appropriate by the Company so that only
Notes in  denominations  of $1,000,  or  integral  multiples  thereof,  shall be
purchased).  Holders whose Notes are  purchased  only in part will be issued new
Notes  equal  in  Accreted  Value  to  the  unpurchased  portion  of  the  Notes
surrendered.

               (4)  At the time the Company  delivers Notes to the Trustee which
are to be accepted  for  purchase,  the Company  will also  deliver an Officers'
Certificate  stating that such Notes are to be accepted by the Company  pursuant
to and in 

                                       38


accordance  with the terms of this Section.  A Note shall be deemed to have been
accepted  for  purchase at the time the  Trustee,  directly or through an agent,
mails or delivers payment therefor to the surrendering Holder.

               (d)  The Company shall comply, to the extent applicable, with the
requirements of  Section 14(e) of the Exchange Act and any other securities laws
or  regulations  in connection  with the  repurchase  of Notes  pursuant to this
Section. To the extent that the provisions of any securities laws or regulations
conflict  with  provisions  of this  Section,  the Company shall comply with the
applicable  securities  laws and  regulations  and  shall  not be deemed to have
breached its obligations under this Section by virtue thereof.

               SECTIONE4.08.EELimitation  on  Affiliate  Transactions.  (a)  The
Company shall not, and shall not permit any Restricted Subsidiary to, enter into
or permit to exist any  transaction  (including  the  purchase,  sale,  lease or
exchange of any property, employee compensation arrangements or the rendering of
any  service)  with any  Affiliate of the Company (an  "Affiliate  Transaction")
unless  the terms  thereof  (1) are  no less  favorable  to the  Company or such
restricted  Subsidiary  than those that  could be  obtained  at the time of such
transaction in arm's-length dealings with a Person who is not such an Affiliate,
(2) if such Affiliate  Transaction involves an amount in excess of $1.0 million,
(i) are set forth in writing and  (ii) have  been  approved by a majority of the
members of the Board of  Directors  having no personal  stake in such  Affiliate
Transaction and (3) if such Affiliate  Transaction  involves an amount in excess
of  $5.0 million,  have been  determined  by  nationally  recognized  investment
banking  firm to be fair,  from a financial  standpoint,  to the Company and its
Restricted Subsidiaries.

               (b)  The provisions of Section 4.08(a) shall not prohibit (i) any
Restricted  Payment  permitted  to be paid  pursuant to  Section 4.05;  (ii) any
issuance of securities,  or other payments, awards or grants in cash, securities
or otherwise  pursuant  to, or the funding of,  employment  arrangements,  stock
options and stock ownership plans approved by the Board of Directors;  (iii) the
grant of stock  options or similar  rights to  employees  and  directors  of the
Company  pursuant to plans  approved by the Board of  Directors;  (iv) loans  or
advances to employees in the ordinary  course of business in accordance with the
past practices of the Company or its Restricted  Subsidiaries,  but in any event
not to exceed $1.0 million in the aggregate outstanding at any one time; (v) the
payment of  reasonable  fees to  directors  of the  Company  and its  Restricted
Subsidiaries   who  are  not   employees  of  the  Company  or  its   Restricted
Subsidiaries;  and  (vi) any  Affiliate  Transaction  between  the Company and a
Wholly Subsidiary or between Wholly Owned Subsidiaries.

                                       39


               SECTION 4.09. Limitation on the Sale or Issuance of Capital Stock
of Restricted  Subsidiaries.  The Company shall not sell or otherwise dispose of
any shares of Capital Stock of a Restricted Subsidiary, and shall not permit any
Restricted  Subsidiary,  directly or  indirectly,  to issue or sell or otherwise
dispose of any shares of its Capital Stock except (i) to the Company or a Wholly
Owned Subsidiary or (ii) if,  immediately  after giving effect to such issuance,
sale or other disposition, such Restricted Subsidiary would no longer constitute
a Restricted Subsidiary.

                  SECTION 4.10. Unrestricted Subsidiaries. The Company shall not
permit  any  Unrestricted  Subsidiary  to  engage  in  the  business  of  shared
telecommunications services in commercial office buildings.

               SECTION  4.11.  Future  Guarantors.  The Company shall cause each
Person  that  Guarantees  any  Indebtedness  of the  Company  to  become an STFC
Guarantor under this Indenture and thereby  Guarantee the Notes on the terms and
conditions set forth in this Indenture.

               SECTION 4.12.  Change of Control.  (a)  Upon a Change of Control,
each Holder  shall have the right to require  that the Company  repurchase  such
Holder's  Notes at a purchase  price in cash equal to 101% of the Accreted Value
thereof  plus  accrued  and unpaid  interest,  if any,  to the date of  purchase
(subject to the right of Holders of record on a record date to receive  interest
on  the  relevant   interest   payment  date),  in  accordance  with  the  terms
contemplated in Section 4.12(b). In the event that at the time of such Change of
Control the terms of the Bank  Indebtedness  restrict or prohibit the repurchase
of Notes  pursuant to this  Section,  then prior to the mailing of the notice to
Holders  provided  for  in  Section 4.12(b)  but  in any  event  within  30 days
following any Change of Control,  the Company  shall  (i) repay in full all Bank
Indebtedness  or to offer to repay in full all Bank  Indebtedness  and repay the
Bank  Indebtedness of each lender who has accepted such offer or (ii) obtain the
requisite consent under the agreements governing the Bank Indebtedness to permit
the repurchase of the Notes as provided for in Section 4.12(b).

               (b) Within 30 days  following any Change of Control,  the Company
shall mail a notice to each Holder with a copy to the Trustee stating:

               (1) that a Change of Control  has  occurred  and that such Holder
         has the right to require the Company to purchase such Holder's Notes at
         a purchase  price in cash equal to 101% of the Accreted  Value  thereof
         plus  accrued  and unpaid  interest,  if any,  to the date of  purchase
         (subject  to the 

                                       40


         right of Holders of record on a record date to receive  interest on the
         relevant interest payment date);

               (2) the circumstances and relevant facts regarding such Change of
         Control  (including  information  with respect to pro forma  historical
         income, cash flow and capitalization after giving effect to such Change
         of Control);

               (3) the  repurchase  date (which shall be no earlier than 30 days
         nor later than 60 days from the date such notice is mailed); and

               (4) the instructions  determined by the Company,  consistent with
         this  Section,  that a Holder  must  follow  in order to have its Notes
         purchased.

               (c) Holders electing to have a Note purchased will be required to
surrender the Note, with an appropriate  form duly completed,  to the Company at
the address  specified in the notice at least three  Business  Days prior to the
purchase  date.  Holders  will be  entitled to  withdraw  their  election if the
Trustee or the Company  receives not later than three Business Days prior to the
purchase date, a telegram, telex, facsimile transmission or letter setting forth
the name of the Holder, the principal amount of the Note which was delivered for
purchase  by the Holder and a  statement  that such  Holder is  withdrawing  his
election to have such Note purchased.

               (d) On the  purchase  date,  all Notes  purchased  by the Company
under this Section shall be delivered by the Trustee for  cancellation,  and the
Company shall pay the purchase price plus accrued and unpaid  interest,  if any,
to the Holders entitled thereto.

               (e)  The Company shall comply, to the extent applicable, with the
requirements of  Section 14(e) of the Exchange Act and any other securities laws
or  regulations  in connection  with the  repurchase  of Notes  pursuant to this
Section. To the extent that the provisions of any securities laws or regulations
conflict  with  provisions  of this  Section,  the Company shall comply with the
applicable  securities  laws and  regulations  and  shall  not be deemed to have
breached its obligations under this Section by virtue thereof.

               SECTION 4.13. Compliance  Certificate.  The Company shall deliver
to the Trustee within  120 days after the end of each fiscal year of the Company
an Officers'  Certificate  stating that in the course of the  performance by the
signers of their  duties as  Officers of the Company  they would  normally  have
knowledge of any Default and whether or not the signers know of any Default that
occurred  during such period.  If they do, the  certificate  shall  describe the
Default,  its status and what  action the  Company is taking or proposes to take
with 

                                       41


respect thereto. The Company also shall comply with TIA ss.E314(a)(4).

               SECTION 4.14.  Further  Instruments and Acts. Upon request of the
Trustee,  the Company will execute and deliver such further  instruments  and do
such  further  acts as may be  reasonably  necessary or proper to carry out more
effectively the purpose of this Indenture.


                                    ARTICLE 5

                                Successor Company


                  SECTION  5.01.  When  Company  May Merge or  Transfer  Assets.
(a) The  Company  shall not  consolidate  with or merge with or into, or convey,
transfer  or  lease,  in one  transaction  or a series of  transactions,  all or
substantially all its assets to, any Person, unless:E

               (i) the resulting, surviving or transferee Person (the "Successor
         Company")  shall be a Person  organized and existing  under the laws of
         the United  States of  America,  any State  thereof or the  District of
         Columbia and the Successor Company (if not the Company) shall expressly
         assume, by an indenture supplemental thereto, executed and delivered to
         the Trustee,  in form satisfactory to the Trustee,  all the obligations
         of the Company under the Notes and this Indenture;

               (ii) immediately  after giving  effect to such  transaction  (and
         treating any Indebtedness  which becomes an obligation of the Successor
         Company or any  Subsidiary  as a result of such  transaction  as having
         been Incurred by such Successor  Company or such Subsidiary at the time
         of such transaction), no Default shall have occurred and be continuing;

               (iii) immediately  after giving effect to such  transaction,  the
         Successor  Company  would  be able to  Incur  an  additional  $1.00  of
         Indebtedness pursuant to Section 4.03(a);

               (iv) immediately  after giving  effect to such  transaction,  the
         Successor  Company shall have  Consolidated Net Worth in an amount that
         is not less than the  Consolidated  Net Worth of the  Company  prior to
         such transaction; and

               (v) the  Company shall have delivered to the Trustee an Officers'
         Certificate  and  an  Opinion  of  Counsel,   each  stating  that  such
         consolidation,  merger or transfer and such supplemental  indenture (if
         any) comply with the Indenture.

                                       42


               The  Successor  Company shall be the successor to the Company and
shall succeed to, and be substituted for, and may exercise every right and power
of, the Company under the Indenture,  but the predecessor Company in the case of
a conveyance, transfer or lease shall not be released from the obligation to pay
the principal of and interest on the Notes.

               Notwithstanding the foregoing  clausesE(ii),  (iii) and (iv), any
Restricted  Subsidiary may consolidate  with, merge into or transfer all or part
of its properties and assets to the Company.

               (b)  STFI  shall  not,  and  the  Company  will  not  permit  any
Subsidiary  Guarantor  to,  consolidate  with or merge with or into,  or convey,
transfer  or  lease,  in one  transaction  or a series of  transactions,  all or
substantially all of its assets to any Person  unless:E(i) in  the case of STFI,
such Person is not the Company or any Restricted Subsidiary; (ii) the resulting,
surviving or transferee Person (if not STFI or such Subsidiary,  as the case may
be) shall be a Person  organized and existing under the laws of the jurisdiction
under which STFI or such Subsidiary,  as applicable,  was organized or under the
laws of the United  States of America,  or any State  thereof or the District of
Columbia,  and such  Person  shall  expressly  assume,  by an  amendment  to the
Indenture, in a form satisfactory to the Trustee, all the obligations of STFI or
such Subsidiary (as applicable) under its Guaranty; and (iii) immediately  after
giving  effect to such  transaction  or  transactions  on a pro forma basis (and
treating  any  Indebtedness  which  becomes  an  obligation  of  the  resulting,
surviving or transferee  Person as a result of such  transaction  as having been
issued by such Person at the time of such  transaction),  no Default  shall have
occurred and be continuing.


                                    ARTICLE 6

                              Defaults and Remedies


                  SECTION 6.01. Events of Default.  An "Event of Default" occurs
if:

               (1) the  Company  defaults in any payment of interest on any Note
         when the same  becomes  due and  payable,  whether or not such  payment
         shall be  prohibited  by Article 10, and such default  continues  for a
         period of 30 days;

               (2) the Company  (i) defaults in the payment of the principal (or
         Accreted  Value) of any Note when the same  becomes  due and payable at
         its Stated Maturity,  upon  redemption,  upon declaration or otherwise,
         whether  or not such  

                                       43


         payment  shall be  prohibited  by Article 10 or (ii) fails to redeem or
         purchase  Notes when required  pursuant to this Indenture or the Notes,
         whether or not such  redemption  or  purchase  shall be  prohibited  by
         ArticleE10;

               (3) the Company or STFI fails to comply with Section 5.01;

               (4) the Company fails to comply with  Section 4.02,  4.03,  4.04,
         4.05,  4.06, 4.07, 4.08, 4.09, 4.10, 4.11 or 4.12 (other than a failure
         to purchase  Notes when required under  Section 4.07  or 4.12) and such
         failure continues for 30 days after the notice specified below;

               (5) the Company or any STFC Guarantor fails to comply with any of
         its  agreements  in the  Notes  or this  Indenture  (other  than  those
         referred to in (1),  (2), (3) or (4) above) and such failure  continues
         for 60 days after the notice specified below;

               (6) Indebtedness   of  the  Company,   STFI  or  any  Significant
         Subsidiary is not paid within any  applicable  grace period after final
         maturity or is accelerated by the holders  thereof because of a default
         and the total amount of such Indebtedness unpaid or accelerated exceeds
         $5.0 million or its foreign currency equivalent at the time;

               (7) the Company,  STFI or any Significant  Subsidiary pursuant to
         or within the meaning of any Bankruptcy Law:

                           (A) commences a voluntary case;

                           (B) consents  to the  entry  of an order  for  relief
               against it in an involuntary case;

                           (C) consents  to the appointment of a Custodian of it
               or for any substantial part of its property; or

                           (D) makes a general assignment for the benefit of its
               creditors;

               or takes any comparable action under any foreign laws relating to
         insolvency;

               (8) a court of competent  jurisdiction  enters an order or decree
         under any Bankruptcy Law that:

                           (A) is for relief  against the  Company,  STFI or any
               Significant Subsidiary in an involuntary case;

                           (B) appoints a Custodian of the Company,  STFI or any
               Significant  Subsidiary  or  for  any  substantial  part  of  its
               property; or

                                       44


                           (C) orders  the  winding  up or  liquidation  of  the
               Company, STFI or any Significant Subsidiary;

               or any similar  relief is granted  under any foreign laws and the
         order or decree remains unstayed and in effect for 60 days;

               (9) any  judgment or decree for the payment of money in excess of
         $5.0 million or its foreign currency  equivalent at the time is entered
         against  the  Company,  STFI  or any  Significant  Subsidiary,  remains
         outstanding  for a  period  of  60 days  following  the  entry  of such
         judgment  or decree  and is not  discharged,  waived  or the  execution
         thereof stayed within 10 days after the notice specified below; or

               (10) a Guaranty ceases to be in full force and effect (other than
         in  accordance  with the terms of such  Guaranty) or an STFC  Guarantor
         denies or disaffirms its obligations under its Guaranty.

               The  foregoing  will  constitute  Events of Default  whatever the
reason for any such Event of Default and whether it is voluntary or  involuntary
or is effected by operation of law or pursuant to any judgment,  decree or order
of any  court  or any  order,  rule  or  regulation  of  any  administrative  or
governmental body.

               The term "Bankruptcy Law" means TitleE11,  United States Code, or
any similar Federal or state law for the relief of debtors. The term "Custodian"
means any receiver, trustee, assignee, liquidator, custodian or similar official
under any Bankruptcy Law.

               A Default under clause (4), (5) or (9) is not an Event of Default
until the  Trustee  or the  Holders of at least 25% in  principal  amount of the
Notes  notify the  Company of the  Default  and the  Company  does not cure such
Default within the time specified after receipt of such notice. Such notice must
specify the Default,  demand that it be remedied and state that such notice is a
"Notice of Default".

               The Company  shall  deliver to the Trustee,  within 30 days after
the occurrence thereof,  written notice in the form of an Officers'  Certificate
of any Event of Default  under  clauseE(6)  or (10) and any event which with the
giving of notice or the lapse of time  would  become an Event of  Default  under
clauseE(4),  (5) or (9),  its  status and what  action the  Company is taking or
proposes to take with respect thereto.

               SECTION 6.02. Acceleration. If an Event of Default (other than an
Event  of  Default  specified  in  Section 6.01(7)  or (8) with  respect  to the
Company) occurs and is continuing, 

                                       45


the Trustee by written notice to the Company,  or the Holders of at least 25% in
principal  amount of the Notes by written notice to the Company and the Trustee,
may declare  the  Accreted  Value of and accrued but unpaid  interest on all the
Notes to be due and payable  (collectively,  the "Default Amount").  Upon such a
declaration,  the Default  Amount  shall be due and payable  immediately.  If an
Event of Default specified in Section 6.01(7) or (8) with respect to the Company
occurs,  the  Default  Amount on all the Notes  shall ipso  facto  become and be
immediately  due and payable without any declaration or other act on the part of
the Trustee or any Noteholders. The Holders of a majority in principal amount of
the Notes by written notice to the Trustee may rescind an  acceleration  and its
consequences  if the  rescission  would not conflict with any judgment or decree
and if all  existing  Events  of  Default  have  been  cured  or  waived  except
nonpayment  of  principal  or  interest  that has become  due solely  because of
acceleration.  No such rescission shall affect any subsequent  Default or impair
any right consequent thereto.

               SECTION 6.03.  Other Remedies.  If an Event of Default occurs and
is  continuing,  the  Trustee  may pursue any  available  remedy to collect  the
payment of principal  of or interest on the Notes or to enforce the  performance
of any provision of the Notes or this Indenture.

               The Trustee may maintain a proceeding even if it does not possess
any of the Notes or does not produce any of them in the  proceeding.  A delay or
omission  by the Trustee or any  Noteholder  in  exercising  any right or remedy
accruing  upon an Event of  Default  shall  not  impair  the  right or remedy or
constitute  a waiver of or  acquiescence  in the Event of Default.  No remedy is
exclusive of any other remedy. All available remedies are cumulative.

               SECTION 6.04. Waiver of Past Defaults.  The Holders of a majority
in principal  amount of the Notes by written  notice to the Trustee may waive an
existing Default and its consequences except (i) a Default in the payment of the
principal  of or interest on a Note or (ii) a  Default in respect of a provision
that under Section 9.02 cannot be amended without the consent of each Noteholder
affected. When a Default is waived, it is deemed cured, but no such waiver shall
extend to any subsequent or other Default or impair any consequent right.

               SECTION 6.05.  Control by Majority.  The Holders of a majority in
principal  amount  of the  Notes  may  direct  the  time,  method  and  place of
conducting  any  proceeding  for  any  remedy  available  to the  Trustee  or of
exercising any trust or power conferred on the Trustee. However, the Trustee may
refuse to follow any direction  that  conflicts  with law or this  Indenture or,
subject to Section 7.01,  that the Trustee  

                                       46


determines is unduly  prejudicial  to the rights of other  Noteholders  or would
involve the Trustee in personal liability;  provided,  however, that the Trustee
may take any other action deemed proper by the Trustee that is not  inconsistent
with such direction.  Prior to taking any action hereunder, the Trustee shall be
entitled to  indemnification  satisfactory to it in its sole discretion  against
all losses and expenses caused by taking or not taking such action.

               SECTION 6.06.  Limitation on Suits.  A Noteholder  may not pursue
any remedy with respect to this Indenture or the Notes unless:

               (1) the  Holder gives to the Trustee  written notice stating that
         an Event of Default is continuing;

               (2) the Holders of at least 25% in principal  amount of the Notes
         make a written request to the Trustee to pursue the remedy;

               (3) such  Holder  or  Holders  offer  to the  Trustee  reasonable
         security or indemnity against any loss, liability or expense;

               (4) the  Trustee does not comply with the request  within 60 days
         after  receipt of the request  and the offer of security or  indemnity;
         and

               (5) the Holders of a majority in principal amount of the Notes do
         not give the Trustee a direction  inconsistent  with the request during
         such 60-day period.

               A Noteholder  may not use this  Indenture to prejudice the rights
of  another  Noteholder  or to obtain a  preference  or  priority  over  another
Noteholder.

               SECTION   6.07.   Rights   of   Holders   To   Receive   Payment.
Notwithstanding  any other provision of this Indenture,  the right of any Holder
to  receive  payment  of  principal  of and  interest  on the Notes held by such
Holder, on or after the respective due dates expressed in the Notes, or to bring
suit for the enforcement of any such payment on or after such respective  dates,
shall not be impaired or affected without the consent of such Holder.

               SECTION 6.08.  Collection Suit by Trustee. If an Event of Default
specified in  Section 6.01(1)  or (2) occurs and is continuing,  the Trustee may
recover  judgment in its own name and as trustee of an express trust against the
Company for the whole amount then due and owing  (together  with interest on any
unpaid  interest to the extent  lawful) and the amounts  provided for in Section
7.07.

                                       47


               SECTION 6.09.  Trustee May File Proofs of Claim.  The Trustee may
file such proofs of claim and other  papers or  documents as may be necessary or
advisable in order to have the claims of the Trustee and the Noteholders allowed
in any  judicial  proceedings  relative to the  Company,  its  creditors  or its
property and, unless  prohibited by law or applicable  regulations,  may vote on
behalf of the Holders in any election of a trustee in bankruptcy or other Person
performing similar functions,  and any Custodian in any such judicial proceeding
is hereby  authorized by each Holder to make payments to the Trustee and, in the
event that the Trustee shall consent to the making of such payments  directly to
the  Holders,  to  pay to the  Trustee  any  amount  due it for  the  reasonable
compensation,  expenses,  disbursements and advances of the Trustee,  its agents
and its counsel, and any other amounts due the Trustee under Section 7.07.

               SECTION 6.10.  Priorities.  If the Trustee  collects any money or
property  pursuant to this  Article 6, it shall pay out the money or property in
the following order:

               FIRST: to the Trustee for amounts due under Section 7.07;
               
               SECOND: to holders of Senior  Indebtedness to the extent required
         by ArticleE10;

               THIRD: to Noteholders for amounts due and unpaid on the Notes for
         principal (or Accreted Value) and interest, ratably, without preference
         or  priority of any kind,  according  to the amounts due and payable on
         the Notes for principal (or Accreted Value) and interest, respectively;
         and

               FOURTH:  to the Company.

               The  Trustee  may fix a  record  date  and  payment  date for any
payment to  Noteholders  pursuant to this Section.  At least 15Edays before such
record date, the Company shall mail or cause to be mailed to each Noteholder and
the Trustee a notice that states the record date, the payment date and amount to
be paid.

               SECTION  6.11.  Undertaking  for  Costs.  In  any  suit  for  the
enforcement  of any right or remedy under this  Indenture or in any suit against
the  Trustee for any action  taken or omitted by it as  Trustee,  a court in its
discretion  may  require  the  filing  by any party  litigant  in the suit of an
undertaking  to pay the costs of the suit,  and the court in its  discretion may
assess reasonable costs, including reasonable attorneys' fees, against any party
litigant  in the suit,  having  due  regard to the  merits and good faith of the
claims or defenses made by the party litigant.  This Section does not apply to a
suit by the  Trustee,  a suit by a Holder  pursuant to 

                                       48


Section  6.07 or a suit by Holders of more than 10% in  principal  amount of the
Notes.

               SECTION 6.12.  Waiver of Stay or Extension  Laws. The Company (to
the extent it may lawfully do so) shall not at any time insist  upon,  or plead,
or in any manner  whatsoever claim or take the benefit or advantage of, any stay
or extension law wherever enacted,  now or at any time hereafter in force, which
may affect the covenants or the performance of this  Indenture;  and the Company
(to the extent that it may lawfully do so) hereby  expressly  waives all benefit
or  advantage  of any such  law,  and  shall not  hinder,  delay or  impede  the
execution  of any power  herein  granted to the  Trustee,  but shall  suffer and
permit the execution of every such power as though no such law had been enacted.

                                    ARTICLE 7

                                     Trustee

               SECTION 7.01. Duties of Trustee.  (a)  If an Event of Default has
occurred and is  continuing,  the Trustee  shall  exercise the rights and powers
vested  in it by this  Indenture  and use the same  degree  of care and skill in
their exercise as a prudent Person would exercise or use under the circumstances
in the conduct of such Person's own affairs.

               (b)  Except during the continuance of an Event of Default:

               (1) the  Trustee  undertakes to perform such duties and only such
         duties as are  specifically  set forth in this Indenture and no implied
         covenants or obligations  shall be read into this Indenture against the
         Trustee; and

               (2) in the  absence  of bad faith on its part,  the  Trustee  may
         conclusively   rely,  as  to  the  truth  of  the  statements  and  the
         correctness of the opinions  expressed  therein,  upon  certificates or
         opinions furnished to the Trustee and conforming to the requirements of
         this Indenture. However, the Trustee shall examine the certificates and
         opinions to determine  whether or not they conform to the  requirements
         of this Indenture.

               (c)  The  Trustee may not be relieved from  liability for its own
negligent action, its own negligent failure to act or its own wilful misconduct,
except that:

               (1) this  paragraph does not limit the effect of paragraphE(b) of
         this Section;

                                       49


               (2) the  Trustee  shall not be liable  for any error of  judgment
         made in good  faith by a Trust  Officer  unless it is  proved  that the
         Trustee was negligent in ascertaining the pertinent facts; and

               (3) the Trustee shall not be liable with respect to any action it
         takes or omits to take in good  faith in  accordance  with a  direction
         received by it pursuant to Section 6.05.

               (d)  Every provision of this Indenture that in any way relates to
the Trustee is subject to paragraphsE(a), (b) and (c) of this Section.

               (e)  The  Trustee  shall not be liable for  interest on any money
received by it except as the Trustee may agree in writing with the Company.

               (f)  Money  held in trust by the Trustee  need not be  segregated
from other funds except to the extent required by law.

               (g) No provision of this  Indenture  shall require the Trustee to
expend or risk its own  funds or  otherwise  incur  financial  liability  in the
performance  of any of its duties  hereunder  or in the  exercise  of any of its
rights or powers, if it shall have reasonable  grounds to believe that repayment
of such  funds or  adequate  indemnity  against  such risk or  liability  is not
reasonably assured to it.

               (h) Every provision of this Indenture  relating to the conduct or
affecting  the  liability of or  affording  protection  to the Trustee  shall be
subject to the provisions of this Section and to the provisions of the TIA.

               Notwithstanding  anything to the contrary  contained herein,  the
Trustee  shall not be charged with  knowledge of any default or Event of Default
(other than those under SectionsE6.01 and 6.02) unless and until a Trust Officer
receives  written notice of or has actual knowledge of any such default or Event
of Default.

               SECTION 7.02. Rights of Trustee. (a)  The Trustee may rely on any
document  believed by it to be genuine and to have been signed or  presented  by
the proper person. The Trustee need not investigate any fact or matter stated in
the document.

               (b)  Before  the Trustee  acts or refrains  from  acting,  it may
require an Officers' Certificate or an Opinion of Counsel. The Trustee shall not
be liable for any action it takes or omits to take in good faith in  reliance on
the Officers' Certificate or Opinion of Counsel.

                                       50


               (c)  The  Trustee  may  act  through  agents  and  shall  not  be
responsible  for the  misconduct or negligence of any agent  appointed  with due
care.

               (d)  The  Trustee  shall not be liable for any action it takes or
omits to take in good faith  which it believes  to be  authorized  or within its
rights  or  powers;  provided,  however,  that the  Trustee's  conduct  does not
constitute wilful misconduct or negligence.

               (e)  The  Trustee may  consult  with  counsel,  and the advice or
opinion of counsel with respect to legal matters  relating to this Indenture and
the Notes shall be full and complete authorization and protection from liability
in respect to any action  taken,  omitted or  suffered by it  hereunder  in good
faith and in accordance with the advice or opinion of such counsel.

               SECTION 7.03.  Individual  Rights of Trustee.  The Trustee in its
individual  or any other  capacity  may become the owner or pledgee of Notes and
may otherwise  deal with the Company or its  Affiliates  with the same rights it
would have if it were not Trustee. Any Paying Agent, Registrar,  co-registrar or
co-paying  agent may do the same with like  rights.  However,  the Trustee  must
comply with Sections 7.10 and 7.11.

               SECTION  7.04.  Trustee's  Disclaimer.  The Trustee  shall not be
responsible  for and makes no  representation  as to the validity or adequacy of
this Indenture or the Notes,  it shall not be accountable  for the Company's use
of the  proceeds  from  the  Notes,  and it  shall  not be  responsible  for any
statement  of  the  Company  in  the  Indenture  or in any  document  issued  in
connection  with the sale of the Notes or in the Notes other than the  Trustee's
certificate of authentication.

               SECTION  7.05.  Notice of  Defaults.  If a Default  occurs and is
continuing  and if it is known to the  Trustee,  the Trustee  shall mail to each
Noteholder  notice of the Default within 90 days after it occurs.  Except in the
case of a Default in payment of principal (or Accreted  Value) of or interest on
any Note,  the Trustee may  withhold the notice if and so long as a committee of
its Trust Officers in good faith  determines  that  withholding the notice is in
the interests of Noteholders.

               SECTION  7.06.  Reports by Trustee to  Holders.  As  promptly  as
practicable  after each MayE15  beginning with the MayE15  following the date of
this  Indenture,  and in any event  prior to JulyE15 in each year,  the  Trustee
shall mail to each  Noteholder a brief  report dated as of MayE15 that  complies
with TIA ss.E313(a). The Trustee also shall comply with TIA ss.E313(b).

                                       51


               A copy of each report at the time of its  mailing to  Noteholders
shall be filed with the SEC and each stock  exchange (if any) on which the Notes
are listed. The Company agrees to notify promptly the Trustee whenever the Notes
become listed on any stock exchange and of any delisting thereof.

               SECTION 7.07. Compensation and Indemnity. The Company or the STFC
Guarantors  if the Company  fails to do so shall pay to the Trustee from time to
time reasonable  compensation for its services. The Trustee's compensation shall
not be limited by any law on compensation of a trustee of an express trust.  The
Company or the STFC Guarantors if the Company fails to do so shall reimburse the
Trustee upon request for all reasonable  out-of-pocket expenses incurred or made
by it,  including costs of collection,  in addition to the  compensation for its
services.  Such expenses shall include the reasonable compensation and expenses,
disbursements  and advances of the Trustee's  agents,  counsel,  accountants and
experts.  The Company and each STFC  Guarantors  shall,  jointly and  severally,
indemnify the Trustee against any and all loss,  liability or expense (including
attorneys'  fees) incurred by it in connection with the  administration  of this
trust and the performance of its duties hereunder.  The Trustee shall notify the
Company  and the STF  Guarantors  promptly  of any  claim  for which it may seek
indemnity. Failure by the Trustee to so notify the Company shall not relieve the
Company of its obligations hereunder.  The Company and the STFC Guarantors shall
defend the claim and the  Trustee  may retain  separate  counsel and the Company
shall pay the reasonable fees and expenses of such counsel.  The Company and the
STFC  Guarantors  need not reimburse any expense or indemnify  against any loss,
liability or expense  incurred by the Trustee  through the  Trustee's own wilful
misconduct, negligence or bad faith.

               To  secure  the  Company's  and  the  STFC  Guarantors'   payment
obligations in this Section, the Trustee shall have a lien prior to the Notes on
all money or  property  held or  collected  by the  Trustee  other than money or
property held in trust to pay  principal (or Accreted  Value) of and interest on
particular Notes.

               The  Company's  and  the  STFC  Guarantors'  payment  obligations
pursuant to this Section shall survive the discharge of this Indenture. When the
Trustee  incurs  expenses  after  the  occurrence  of  a  Default  specified  in
Section 6.01(7)  or (8) with respect to the Company or any STFC  Guarantor,  the
expenses  are  intended  to  constitute  expenses  of  administration  under the
Bankruptcy Law.

               SECTION 7.08.  Replacement of Trustee.  The Trustee may resign at
any time by so  notifying  the  Company.  The 

                                       52


Holders of a majority in principal amount of the Notes may remove the Trustee by
so notifying the Trustee and may appoint a successor Trustee.  The Company shall
remove the Trustee if:

               (1) the Trustee fails to comply with Section 7.10;

               (2) the Trustee is adjudged bankrupt or insolvent;

               (3) a  receiver  or other  public  officer  takes  charge  of the
         Trustee or its property; or

               (4) the Trustee otherwise becomes incapable of acting.

               If the  Trustee  resigns,  is  removed  by the  Company or by the
Holders of a majority in  principal  amount of the Notes and such Holders do not
reasonably  promptly appoint a successor Trustee,  or if a vacancy exists in the
office of Trustee  for any reason (the  Trustee in such event being  referred to
herein as the retiring Trustee),  the Company shall promptly appoint a successor
Trustee.

               A successor  Trustee  shall  deliver a written  acceptance of its
appointment  to  the  retiring  Trustee  and  to  the  Company.   Thereupon  the
resignation or removal of the retiring Trustee shall become  effective,  and the
successor  Trustee  shall have all the rights,  powers and duties of the Trustee
under this  Indenture  and the  retiring  Trustee  shall have no further  rights
powers or duties under the Indenture.  The successor Trustee shall mail a notice
of its succession to Noteholders.  The retiring Trustee shall promptly  transfer
all property held by it as Trustee to the successor Trustee, subject to the lien
provided for in Section 7.07.

               If a successor  Trustee does not take office within 60 days after
the retiring Trustee resigns or is removed,  the retiring Trustee or the Holders
of 10% in  principal  amount of the Notes may  petition  any court of  competent
jurisdiction for the appointment of a successor Trustee.

               If the Trustee fails to comply with Section 7.10,  any Noteholder
may petition any court of competent  jurisdiction for the removal of the Trustee
and the appointment of a successor Trustee.

               Notwithstanding  the replacement of the Trustee  pursuant to this
Section,  the Company's  obligations under  Section 7.07  shall continue for the
benefit of the retiring Trustee.

               SECTION  7.09.  Successor  Trustee  by  Merger.  If  the  Trustee
consolidates  with,  merges or converts into, or transfers all or  substantially
all its corporate  trust 

                                       53


business  or  assets  to,  another  corporation  or  banking  association,   the
resulting,  surviving or transferee corporation without any further act shall be
the successor Trustee.

               In case at the time  such  successor  or  successors  by  merger,
conversion or  consolidation  to the Trustee shall succeed to the trusts created
by this  Indenture  any of the  Notes  shall  have  been  authenticated  but not
delivered,  any such  successor  to the  Trustee  may adopt the  certificate  of
authentication   of  any  predecessor   trustee,   and  deliver  such  Notes  so
authenticated;  and in case at that  time any of the  Notes  shall not have been
authenticated,  any successor to the Trustee may authenticate  such Notes either
in the name of any predecessor  hereunder or in the name of the successor to the
Trustee; and in all such cases such certificates shall have the full force which
it is anywhere in the Notes or in this Indenture  provided that the  certificate
of the Trustee shall have.

               SECTION 7.10. Eligibility; Disqualification. The Trustee shall at
all times satisfy the  requirements of TIA ss.E310(a).  The Trustee shall have a
combined  capital and surplus of at least  $50,000,000  as set forth in its most
recent published  annual report of condition.  The Trustee shall comply with TIA
ss.E310(b);  provided,  however, that there shall be excluded from the operation
of TIAEss.E310(b)(1) any indenture or indentures under which other securities or
certificates of interest or participation in other securities of the Company are
outstanding   if  the   requirements   for   such   exclusion   set   forth   in
TIAEss.E310(b)(1) are met.

               SECTION 7.11.  Preferential Collection of Claims AgainstECompany.
The  Trustee   shall  comply  with  TIA   ss.E311(a),   excluding  any  creditor
relationship  listed in TIA  ss.E311(b).  A  Trustee  who has  resigned  or been
removed shall be subject to TIA ss.E311(a) to the extent indicated.


                                    ARTICLE 8

                       Discharge of Indenture; Defeasance

               SECTION  8.01.  Discharge  of  Liability  on  Notes;  Defeasance.
(a)  When  (i) the Company delivers to the Trustee all outstanding  Notes (other
than Notes  replaced  pursuant  to Section  2.06) for  cancellation  or (ii) all
outstanding  Notes have  become due and  payable,  whether at  maturity  or as a
result of the mailing of a notice of redemption pursuant to ArticleE3 hereof and
the Company  irrevocably  deposits with the Trustee  funds  sufficient to pay at
maturity or upon redemption all outstanding Notes, including interest thereon to
maturity or such redemption date (other than Notes replaced  pursuant to 

                                       54


Section  2.06),  and if in either case the Company  pays all other sums  payable
hereunder  by the  Company,  then this  Indenture  shall,  subject  to  Sections
8.01(c),   cease  to  be  of  further  effect.  The  Trustee  shall  acknowledge
satisfaction   and  discharge  of  this  Indenture  on  demand  of  the  Company
accompanied  by an  Officers'  Certificate  and an Opinion of Counsel and at the
cost and expense of the Company.

               (b)  Subject  to Sections  8.01(c)  and 8.02,  the Company at any
time may terminate  (i) all its  obligations  under the Notes and this Indenture
("legal defeasance option") or (ii) its obligations under  SectionsE4.02,  4.03,
4.04,  4.05,  4.06,  4.07,  4.08, 4.09, 4.10, 4.11 and 4.12 and the operation of
Sections  6.01(4),  6.01(6),  6.01(7)  (but only  with  respect  to  Significant
Subsidiaries)  and  6.01(9)  ("covenant  defeasance  option").  The  Company may
exercise its legal defeasance option  notwithstanding  its prior exercise of its
covenant defeasance option.

               If the Company exercises its legal defeasance option,  payment of
the Notes may not be accelerated  because of an Event of Default. If the Company
exercises  its  covenant  defeasance  option,  payment  of the  Notes may not be
accelerated  because  of an  Event of  Default  specified  in  SectionsE6.01(4),
6.01(6), 6.01(7) (but only with respect to Significant  Subsidiaries) or 6.01(9)
or because of the failure of the  Company to comply  with  SectionsE5.01(a)(iii)
and (iv) or Section 5.01(b)(iii).  If the Company exercises its legal defeasance
option or its covenant  defeasance option,  each STFC Guarantor will be released
from all of its obligations under its Guaranty.

               Upon  satisfaction  of the  conditions  set forth herein and upon
request of the Company,  the Trustee shall  acknowledge in writing the discharge
of those obligations that the Company terminates.

               (c)  Notwithstanding  clausesE(a)  and (b) above,  the  Company's
obligations in Sections 2.03, 2.04, 2.05, 2.06, 2.07, 7.07, 7.08, 8.04, 8.05 and
8.06  shall  survive  until the Notes  have been paid in full.  Thereafter,  the
Company's obligations in Sections 7.07, 8.04 and 8.05 shall survive.

               SECTION 8.02. Conditions to Defeasance.  The Company may exercise
its legal defeasance option or its covenant defeasance option only if:

               (1) the  Company  irrevocably  deposits in trust with the Trustee
         money orEU.S.  Government  Obligations  for the payment of principal of
         and  interest on the Notes to maturity or  redemption,  as the case may
         be;

                                       55


               (2) the  Company  delivers  to the Trustee a  certificate  from a
         nationally recognized firm of independent  accountants expressing their
         opinion  that the  payments  of  principal  and  interest  when due and
         without reinvestment on the depositedEU.S.  Government Obligations plus
         any deposited money without  investment will provide cash at such times
         and in such amounts as will be sufficient to pay principal and interest
         when due on all the Notes to  maturity or  redemption,  as the case may
         be;

               (3) 123Edays  pass  after  the  deposit  is made and  during  the
         123-day  period no Default  specified  in  Section  6.01(7) or (8) with
         respect to the Company  occurs  which is  continuing  at the end of the
         period;

               (4) the  deposit does not  constitute  a default  under any other
         agreement binding on the Company and is not prohibited by Article 10;

               (5) the Company  delivers to the Trustee an Opinion of Counsel to
         the  effect  that  the  trust  resulting  from  the  deposit  does  not
         constitute,  or is qualified as, a regulated  investment  company under
         the Investment Company Act of 1940;

               (6) in the case of the legal defeasance option, the Company shall
         have  delivered  to the  Trustee an Opinion  of  Counsel  stating  that
         (i) the  Company has received from, or there has been published by, the
         Internal  Revenue  Service a  ruling,  or  (ii) since  the date of this
         Indenture there has been a change in the applicable  Federal income tax
         law, in either case to the effect that,  and based thereon such Opinion
         of Counsel  shall  confirm  that,  the  Noteholders  will not recognize
         income,  gain or loss for  Federal  income tax  purposes as a result of
         such  defeasance  and will be subject to Federal income tax on the same
         amounts,  in the same  manner  and at the same times as would have been
         the case if such defeasance had not occurred;

               (7) in the case of the covenant  defeasance  option,  the Company
         shall have delivered to the Trustee an Opinion of Counsel to the effect
         that  the  Noteholders  will  not  recognize  income,  gain or loss for
         Federal income tax purposes as a result of such covenant defeasance and
         will be subject to Federal income tax on the same amounts,  in the same
         manner  and at the  same  times  as  would  have  been the case if such
         covenant defeasance had not occurred; and

               (8) the Company delivers to the Trustee an Officers'  Certificate
         and an Opinion of Counsel,  each stating that all conditions  precedent
         to the  defeasance and discharge of the Notes as  contemplated  by this
         Article 8 have been complied with.

                                       56


               Before or after a  deposit,  the  Company  may make  arrangements
satisfactory  to the  Trustee  for the  redemption  of Notes at a future date in
accordance with Article 3.

               SECTION 8.03.  Application of Trust Money. The Trustee shall hold
in trust money orEU.S. Government Obligations deposited with it pursuant to this
ArticleE8. It shall apply the deposited money and the money fromEU.S. Government
Obligations  through the Paying Agent and in accordance  with this  Indenture to
the payment of principal of and interest on the Notes.  Money and  securities so
held in trust are not subject to Article 10.

               SECTION  8.04.  Repayment to Company.  The Trustee and the Paying
Agent shall  promptly  turn over to the Company upon request any excess money or
securities held by them at any time.

               Subject to any applicable abandoned property law, the Trustee and
the Paying  Agent shall pay to the Company  upon  request any money held by them
for the payment of principal or interest  that remains  unclaimed for two years,
and, thereafter,  Noteholders entitled to the money must look to the Company for
payment as general creditors.

               SECTION 8.05. Indemnity for Government  Obligations.  The Company
shall pay and shall  indemnify the Trustee  against any tax, fee or other charge
imposed on or assessed  against  depositedEU.S.  Government  Obligations  or the
principal and interest received on suchEU.S. Government Obligations.

               SECTION  8.06.  Reinstatement.  If the Trustee or Paying Agent is
unable to apply any money orEU.S. Government Obligations in accordance with this
Article  8 by  reason  of any  legal  proceeding  or by  reason  of any order or
judgment  of any  court or  governmental  authority  enjoining,  restraining  or
otherwise  prohibiting such  application,  the Company's  obligations under this
Indenture and the Notes shall be revived and reinstated as though no deposit had
occurred  pursuant  to this  Article 8 until such time as the  Trustee or Paying
Agent is permitted to apply all such money  orEU.S.  Government  Obligations  in
accordance with this ArticleE8; provided, however, that, if the Company has made
any  payment  of  interest  on  or  principal  of  any  Notes   because  of  the
reinstatement of its obligations,  the Company shall be subrogated to the rights
of the Holders of such Notes to receive such payment from the money or U.S.
Government Obligations held by the Trustee or Paying Agent.

                                       57


                                    ARTICLE 9

                                   Amendments

               SECTION 9.01. Without Consent of Holders.  The Company,  the STFC
Guarantors  and the Trustee may amend this Indenture or the Notes without notice
to or consent of any Noteholder:

               (1) to cure any ambiguity, omission, defect or inconsistency;

               (2) to comply with Article 5;

               (3) to  provide  for  uncertificated  Notes in  addition to or in
         place of certificated Notes; provided, however, that the uncertificated
         Notes are issued in registered form for purposes of  Section 163(f)  of
         the  Code  or in a  manner  such  that  the  uncertificated  Notes  are
         described in Section 163(f)(2)(B) of the Code;

               (4) to  make  any  change  in  ArticleE10  that  would  limit  or
         terminate the benefits  available to any holder of Senior  Indebtedness
         (or Representatives therefor) under ArticleE10;

               (5) to add  guarantees  with respect to the Notes,  including any
         new Subsidiary Guaranties, or to secure the Notes;

               (6) to add to the covenants of the Company for the benefit of the
         Holders or to surrender  any right or power herein  conferred  upon the
         Company;

               (7) to comply with any requirements of the SEC in connection with
         qualifying,  or maintaining the  qualification  of this Indenture under
         the TIA; or

               (8) to make any change that does not adversely  affect the rights
         of any Noteholder.

               An  amendment  under this  Section  may not make any change  that
adversely  affects  the  rights  under  Article  10  of  any  holder  of  Senior
Indebtedness then outstanding unless the holders of such Senior Indebtedness (or
any group or  representative  thereof  authorized to give a consent)  consent to
such change.

               After an amendment  under this  Section  becomes  effective,  the
Company shall mail to Noteholders a notice briefly  describing  such  amendment.
The failure to give such notice to all Noteholders, or any defect therein, shall
not 

                                       58


impair or affect the validity of an amendment under this Section.

               SECTION  9.02.  With Consent of Holders.  The  Company,  the STFC
Guarantors  and the Trustee may amend this Indenture or the Notes without notice
to any  Noteholder  but with the  written  consent of the  Holders of at least a
majority in principal amount of the Notes. However,  without the consent of each
Noteholder affected, an amendment may not:

               (1) reduce  the amount of Notes whose  Holders must consent to an
         amendment;

               (2) reduce the rate of or extend the time for payment of interest
         on any Note;

               (3) reduce  the  principal  or  Accreted  Value of or extend  the
         Stated Maturity of any Note;

               (4) reduce the premium payable upon the redemption of any Note or
         change the time at which any Note may be  redeemed in  accordance  with
         ArticleE3;

               (5) make  any Note payable in money other than that stated in the
         Note;

               (6) make any change in Article 10 or  ArticleE12  that  adversely
         affects the rights of any Noteholder under ArticleE10 or ArticleE12;

               (7) make  any  change  in  Section  6.04 or  6.07  or the  second
         sentence of this Section; or

               (8) make any change in any Guaranty that would  adversely  affect
         the Noteholders.

               It shall not be  necessary  for the consent of the Holders  under
this Section to approve the particular  form of any proposed  amendment,  but it
shall be sufficient if such consent approves the substance thereof.

               An  amendment  under this  Section  may not make any change  that
adversely  affects  the  rights  under  Article  10  of  any  holder  of  Senior
Indebtedness then outstanding unless the holders of such Senior Indebtedness (or
any group or  representative  thereof  authorized to give a consent)  consent to
such change.

               After an amendment  under this  Section  becomes  effective,  the
Company shall mail to Noteholders a notice briefly  describing  such  amendment.
The failure to give such notice to all Noteholders, or any defect therein, shall
not 

                                       59


impair or affect the validity of an amendment under this Section.

               SECTION  9.03.   Compliance   with  Trust  Indenture  Act.  Every
amendment  to this  Indenture  or the Notes shall comply with the TIA as then in
effect.

               SECTION 9.04.  Revocation and Effect of Consents
and  Waivers.  A consent to an amendment or a waiver by a Holder of a Note shall
bind the Holder and every subsequent  Holder of that Note or portion of the Note
that evidences the same debt as the consenting  Holder's Note,  even if notation
of the  consent or waiver is not made on the Note.  However,  any such Holder or
subsequent  Holder may revoke the consent or waiver as to such  Holder's Note or
portion of the Note if the Trustee receives the notice of revocation  before the
date the  amendment or waiver  becomes  effective.  After an amendment or waiver
becomes  effective,  it shall  bind every  Noteholder.  An  amendment  or waiver
becomes effective upon the execution of such amendment or waiver by the Trustee.

               The Company may, but shall not be obligated to, fix a record date
for the purpose of determining the Noteholders entitled to give their consent or
take any other  action  described  above or  required or  permitted  to be taken
pursuant to this Indenture.  If a record date is fixed, then notwithstanding the
immediately  preceding  paragraph,  those Persons who were  Noteholders  at such
record date (or their duly designated proxies), and only those Persons, shall be
entitled to give such  consent or to revoke any consent  previously  given or to
take any such action,  whether or not such Persons  continue to be Holders after
such record date.  No such consent shall be valid or effective for more than 120
days after such record date.

               SECTION 9.05.  Notation on or Exchange of Notes.  If an amendment
changes  the terms of a Note,  the Trustee may require the Holder of the Note to
deliver it to the Trustee.  The Trustee may place an appropriate notation on the
Note regarding the changed terms and return it to the Holder. Alternatively,  if
the Company or the Trustee so  determines,  the Company in exchange for the Note
shall issue and the Trustee  shall  authenticate  a new Note that  reflects  the
changed terms.  Failure to make the appropriate  notation or to issue a new Note
shall not affect the validity of such amendment.

               SECTION 9.06. Trustee To Sign Amendments.  The Trustee shall sign
any amendment  authorized  pursuant to this Article 9 if the amendment  does not
adversely affect the rights,  duties,  liabilities or immunities of the Trustee.
If it does,  the Trustee may but need not sign it. In signing such amendment the
Trustee shall be entitled to receive 

                                       60


indemnity reasonably  satisfactory to it and to receive, and (subject to Section
7.01) shall be fully protected in relying upon, an Officers'  Certificate and an
Opinion of Counsel  stating that such  amendment is  authorized  or permitted by
this Indenture and that such amendment  constitutes the legal, valid and binding
obligation  of the  Company  and each STFC  Guarantor  subject to the  customary
exceptions.

               SECTION  9.07.  Payment for Consent.  Neither the Company nor any
Affiliate of the Company shall, directly or indirectly,  pay or cause to be paid
any consideration,  whether by way of interest, fee or otherwise,  to any Holder
for or as an inducement to any consent,  waiver or amendment of any of the terms
or  provisions  of this  Indenture  or the Notes  unless such  consideration  is
offered to be paid to all Holders  that so  consent,  waive or agree to amend in
the time frame set forth in  solicitation  documents  relating to such  consent,
waiver or agreement.


                                   ARTICLE 10

                           Subordination of the Notes

               SECTION 10.01. Agreement To Subordinate.  The Company agrees, and
each Noteholder by accepting a Note agrees,  that the Indebtedness  evidenced by
the Notes is subordinated  in right of payment,  to the extent and in the manner
provided in this Article 10, to the prior payment of all Senior  Indebtedness of
the Company and that the  subordination is for the benefit of and enforceable by
the holders of such Senior  Indebtedness.  The Notes shall in all respects  rank
pari passu with all other Senior  Subordinated  Indebtedness  of the Company and
only Indebtedness of the Company which is Senior  Indebtedness shall rank senior
to the Notes in accordance with the provisions set forth herein.  All provisions
of this ArticleE10 shall be subject to Section 10.12.

               SECTION 10.02.  Liquidation,  Dissolution,  Bankruptcy.  Upon any
payment or  distribution  of the assets of the Company to creditors upon a total
or partial  liquidation or a total or partial dissolution of the Company or in a
bankruptcy,  reorganization,  insolvency,  receivership  or  similar  proceeding
relating to the Company or its property:

               (1) holders  of  Senior  Indebtedness  of the  Company  shall  be
         entitled to receive payment in full of such Senior Indebtedness in cash
         or cash equivalents before Noteholders shall be entitled to receive any
         payment of principal of or interest on the Notes; and

                                       61


               (2) until  such  Senior  Indebtedness  is paid in full in cash or
         cash  equivalents,  any  distribution  to  which  Noteholders  would be
         entitled  but for this  Article  10 shall  be made to  holders  of such
         Senior  Indebtedness  as  their  interests  may  appear,   except  that
         Noteholders  may receive shares of stock and any debt  securities  that
         are  subordinated  to  such  Senior  Indebtedness,   and  to  any  debt
         securities received by holders of such Senior Indebtedness, to at least
         the same extent as the Notes are subordinated to Senior Indebtedness of
         the Company.

               SECTION 10.03. Default on Senior Indebtedness of the Company. The
Company  may not pay the  principal  of or  premium,  if any, or interest on the
Notes or make any  deposit  pursuant  to  Section  8.01 and may not  repurchase,
redeem or otherwise retire or defease any Notes (collectively,  "pay the Notes")
if (i) any Designated Senior Indebtedness is not paid when due or (ii) any other
default  on  Designated  Senior  Indebtedness  occurs and the  maturity  of such
Designated  Senior  Indebtedness  is  accelerated  in accordance  with its terms
unless,  in either case,  (x) the  default has been cured or waived and any such
acceleration has been rescinded or (y) such  Designated Senior  Indebtedness has
been paid in full; provided, however, that the Company may pay the Notes without
regard to the foregoing if the Company and the Trustee  receive  written  notice
approving  such  payment  from  the  Representatives  of the  Designated  Senior
Indebtedness.  During  the  continuance  of any  default  (other  than a default
described in clause (i) or (ii) of the preceding  sentence)  with respect to any
Designated  Senior  Indebtedness  pursuant to which the maturity  thereof may be
accelerated  immediately  without  further  notice (except such notice as may be
required to effect such  acceleration) or the expiration of any applicable grace
periods,  the Company  may not pay the Notes for a period (a  "Payment  Blockage
Period")  commencing  upon the receipt by the Company and the Trustee of written
notice (a "Blockage  Notice") of such default  from the  Representative  of such
Designated  Senior  Indebtedness  specifying  an  election  to  effect a Payment
Blockage  Period and ending  179Edays  thereafter  (or  earlier if such  Payment
Blockage  Period is  terminated  (i) by  written  notice to the  Trustee and the
Company  from the  Person or  Persons  who gave such  Blockage  Notice,  (ii) by
repayment in full of such Designated  Senior  Indebtedness or (iii) because  the
default  giving  rise  to  such  Blockage  Notice  is  no  longer   continuing).
Notwithstanding the provisions  described in the immediately  preceding sentence
(but subject to the provisions contained in the first sentence of this Section),
unless the holders of such Designated Senior  Indebtedness or the Representative
of such holders shall have  accelerated the maturity of such  Designated  Senior
Indebtedness,  the Company may resume  payments on the Notes after such  Payment
Blockage  Period.  Not  more  than  one  Blockage  Notice  may be  given  in any
consecutive 360-day 

                                       62


period, irrespective of the number of defaults with respect to Designated Senior
Indebtedness during such period; provided,  however, that if any Blockage Notice
within such 360-day period is given by or on behalf of any holders of Designated
Senior Indebtedness  (other than the Bank  Indebtedness),  the Representative of
the Bank  Indebtedness  may give  another  Blockage  Notice  within such period;
provided further,  however, that in no event may the total number of days during
which any Payment Blockage Period or Periods is in effect exceed 179Edays in the
aggregate during any  360 consecutive  day period. For purposes of this Section,
no default or event of default  which  existed or was  continuing on the date of
the  commencement of any Payment  Blockage Period with respect to the Designated
Senior  Indebtedness  initiating  such Payment  Blockage  Period shall be, or be
made, the basis of the  commencement of a subsequent  Payment Blockage Period by
the Representative of such Designated Senior Indebtedness, whether or not within
a period of 360 consecutive  days, unless such default or event of default shall
have been cured or waived for a period of not less than 90 consecutive days.

               SECTION 10.04.  Acceleration  of Payment of Notes.  If payment of
the Notes is  accelerated  because of an Event of  Default,  the  Company or the
Trustee  shall  promptly  notify  the  Representative  for  the  holders  of the
Designated  Senior  Indebtedness  by written  notice to the address set forth in
Section 13.02 hereof or at any other address specified in writing to the Trustee
from time to time.

               SECTION  10.05.  When  Distribution  Must  Be  Paid  Over.  If  a
distribution  is made to Noteholders  that because of this Article 10 should not
have been made to them, the Noteholders who receive the distribution  shall hold
it in trust for holders of Senior Indebtedness of the Company and pay it over to
them or their Representatives as their interests may appear.

               SECTION 10.06. Subrogation.  After all Senior Indebtedness of the
Company is paid in full and until the Notes are paid in full,  Noteholders shall
be  subrogated to the rights of holders of such Senior  Indebtedness  to receive
distributions applicable to such Senior Indebtedness.  A distribution made under
this Article 10 to holders of such Senior  Indebtedness  which  otherwise  would
have been made to Noteholders is not, as between the Company and Noteholders,  a
payment by the Company on such Senior Indebtedness.

               SECTION  10.07.  Relative  Rights.  This  Article 10 defines  the
relative  rights  of  Noteholders  and  holders  of Senior  Indebtedness  of the
Company. Nothing in this Indenture shall:

                                       63


               (1) impair,   as  between  the  Company  and   Noteholders,   the
         obligation of the Company, which is absolute and unconditional,  to pay
         principal of and interest on the Notes in accordance  with their terms;
         or

               (2) prevent  the Trustee or any  Noteholder  from  exercising its
         available remedies upon a Default,  subject to the rights of holders of
         Senior Indebtedness of the Company to receive  distributions  otherwise
         payable to Noteholders.

               SECTION 10.08.  Subordination May Not Be Impaired by Company.  No
right of any  holder  of Senior  Indebtedness  of the  Company  to  enforce  the
subordination  of the  Indebtedness  evidenced by the Notes shall be impaired by
any act or failure to act by the  Company or by its  failure to comply with this
Indenture.
               SECTION   10.09.    Rights   of   Trustee   and   Paying   Agent.
Notwithstanding  Section 10.03, the Trustee or Paying Agent may continue to make
payments on the Notes and shall not be charged with  knowledge of the  existence
of facts that would  prohibit the making of any such payments  unless,  not less
than two Business Days prior to the date of such payment, a Trust Officer of the
Trustee receives written notice satisfactory to it that payments may not be made
under this Article 10. The Company,  the Registrar or  co-registrar,  the Paying
Agent, a  Representative  or a holder of Senior  Indebtedness of the Company may
give the notice; provided,  however, that, if an issue of Senior Indebtedness of
the Company has a Representative, only the Representative may give the notice.

               The  Trustee in its  individual  or any other  capacity  may hold
Senior Indebtedness of the Company with the same rights it would have if it were
not Trustee. The Registrar and co-registrar and the Paying Agent may do the same
with like rights.  The Trustee  shall be entitled to all the rights set forth in
this  Article 10 with respect to any such Senior  Indebtedness  which may at any
time be held by it,  to the same  extent  as any  other  holder  of such  Senior
Indebtedness;  and nothing in Article 7 shall  deprive the Trustee of any of its
rights as such  holder.  Nothing in this Article 10 shall apply to claims of, or
payments to, the Trustee under or pursuant to Section 7.07.

               SECTION 10.10. Distribution or Notice to Representative. Whenever
a distribution is to be made or a notice given to holders of Senior Indebtedness
of the  Company,  the  distribution  may be made and the  notice  given to their
Representative (if any).

               SECTION  10.11.  ArticleE10  Not To Prevent  Events of Default or
Limit Right To Accelerate.  The failure to make a payment  pursuant to the Notes
by  reason  of any  provision  in 

                                       64


this  Article  10 shall not be  construed  as  preventing  the  occurrence  of a
Default.  Nothing  in this  Article 10 shall have any effect on the right of the
Noteholders or the Trustee to accelerate the maturity of the Notes.

               SECTION  10.12.  Trust Moneys Not  Subordinated.  Notwithstanding
anything  contained herein to the contrary,  payments from money or the proceeds
ofEU.S.  Government Obligations held in trust under Article 8 by the Trustee for
the payment of principal of and interest on the Notes shall not be  subordinated
to the prior payment of any Senior Indebtedness of the Company or subject to the
restrictions set forth in this Article 10, and none of the Noteholders  shall be
obligated  to pay over any such  amount to the  Company  or any holder of Senior
Indebtedness of the Company or any other creditor of the Company.

               SECTION  10.13.  Trustee  Entitled  To Rely.  Upon any payment or
distribution  pursuant to this Article 10, the Trustee and the Noteholders shall
be  entitled  to rely  (i) upon  any  order or  decree  of a court of  competent
jurisdiction in which any proceedings of the nature referred to in Section 10.02
are pending,  (ii) upon a  certificate  of the  liquidating  trustee or agent or
other  Person  making  such  payment or  distribution  to the  Trustee or to the
Noteholders  or  (iii) upon  the  Representatives  for  the  holders  of  Senior
Indebtedness of the Company for the purpose of ascertaining the Persons entitled
to  participate  in such  payment or  distribution,  the  holders of such Senior
Indebtedness  and other  Indebtedness  of the  Company,  the  amount  thereof or
payable thereon, the amount or amounts paid or distributed thereon and all other
facts  pertinent  thereto or to this  Article  10. In the event that the Trustee
determines,  in good faith,  that evidence is required with respect to the right
of any Person as a holder of Senior  Indebtedness  of the Company to participate
in any  payment or  distribution  pursuant  to this  Article 10, the Trustee may
request such Person to furnish  evidence to the reasonable  satisfaction  of the
Trustee as to the amount of such Senior  Indebtedness  held by such Person,  the
extent to which  such  Person is  entitled  to  participate  in such  payment or
distribution  and other facts  pertinent to the rights of such Person under this
ArticleE10,  and, if such evidence is not  furnished,  the Trustee may defer any
payment to such Person pending  judicial  determination  as to the right of such
Person to receive such payment.  The  provisions of Sections 7.01 and 7.02 shall
be applicable to all actions or omissions of actions by the Trustee  pursuant to
this Article 10.

               SECTION  10.14.   Trustee  To  Effectuate   Subordination.   Each
Noteholder by accepting a Note  authorizes and directs the Trustee on his behalf
to take  such  action as may be  necessary  or  appropriate  to  acknowledge  or
effectuate the  subordination  

                                       65


between the Noteholders and the holders of Senior Indebtedness of the Company as
provided in this Article 10 and appoints the Trustee as attorney-in-fact for any
and all such purposes.

               SECTION  10.15.  Trustee  Not  Fiduciary  for  Holders  of Senior
Indebtedness.  The Trustee shall not be deemed to owe any fiduciary  duty to the
holders of Senior  Indebtedness  of the  Company  and shall not be liable to any
such holders if it shall mistakenly pay over or distribute to Noteholders or the
Company or any other Person, money or assets to which any holders of such Senior
Indebtedness shall be entitled by virtue of this Article 10 or otherwise.

               SECTION  10.16.  Reliance  by Holders of Senior  Indebtedness  on
Subordination  Provisions.  Each Noteholder by accepting a Note acknowledges and
agrees that the foregoing subordination  provisions are, and are intended to be,
an inducement and a consideration  to each holder of any Senior  Indebtedness of
the Company,  whether such Senior Indebtedness was created or acquired before or
after the issuance of the Notes, to acquire and continue to hold, or to continue
to hold, such Senior  Indebtedness  and such holder of such Senior  Indebtedness
shall be deemed conclusively to have relied on such subordination  provisions in
acquiring  and  continuing  to  hold,  or in  continuing  to hold,  such  Senior
Indebtedness.


                                   ARTICLE 11

                                   Guaranties

               SECTION   11.01.   Guaranties.   Each   STFC   Guarantor   hereby
unconditionally  and  irrevocably  guarantees,  jointly and  severally,  to each
Holder and to the  Trustee  and its  successors  and  assigns  (a) the  full and
punctual  payment of  principal  or Accreted  Value of and interest on the Notes
when due, whether at maturity, by acceleration,  by redemption or otherwise, and
all other monetary obligations of the Company under this Indenture and the Notes
and (b) the full and punctual performance within applicable grace periods of all
other  obligations  of the Company  under this  Indenture and the Notes (all the
foregoing being hereinafter  collectively called the  "Obligations").  Each STFC
Guarantor  further agrees that the  Obligations  may be extended or renewed,  in
whole or in part,  without notice or further assent from such STFC Guarantor and
that such STFC Guarantor will remain bound under this ArticleE11 notwithstanding
any extension or renewal of any Obligation.

               Each STFC Guarantor  waives  presentation  to, demand of, payment
from and protest to the Company of any of the Obligations and also waives notice
of protest for  nonpayment.  Each STFC  Guarantor  waives  notice of any default
under the  

                                       66


Notes or the Obligations. The obligations of each STFC Guarantor hereunder shall
not be  affected  by (a) the  failure of any Holder or the Trustee to assert any
claim or demand or to enforce  any right or remedy  against  the  Company or any
other  Person  under  this  Indenture,  the  Notes  or any  other  agreement  or
otherwise;  (b) any  extension  or renewal of any thereof;  (c) any  rescission,
waiver,  amendment or  modification  of any of the terms or  provisions  of this
Indenture,  the Notes or any other  agreement;  (d) the  release of any security
held by any Holder or the Trustee for the  Obligations  or any of them;  (e) the
failure of any Holder or Trustee to  exercise  any right or remedy  against  any
other guarantor of the  Obligations;  or (f) any change in the ownership of such
STFC Guarantor.

               Each STFC  Guarantor  further  agrees that its  Guarantee  herein
constitutes a guarantee of payment, performance and compliance when due (and not
a guarantee  of  collection)  and waives any right to require that any resort be
had by any  Holder  or the  Trustee  to any  security  held for  payment  of the
Obligations.

               Each  Guaranty  is, to the  extent and in the manner set forth in
ArticleE12, subordinated and subject in right of payment to the prior payment in
full of the  principal  of and  premium,  if any,  and  interest  on all  Senior
Indebtedness  of the STFC  Guarantor  giving such  Guaranty and each Guaranty is
made subject to such provisions of this Indenture.

               Except  as  expressly  set forth in  SectionsE8.01(b),  11.02 and
11.06, the obligations of each STFC Guarantor  hereunder shall not be subject to
any reduction,  limitation,  impairment or termination for any reason, including
any claim of waiver, release, surrender, alteration or compromise, and shall not
be subject to any defense of setoff,  counterclaim,  recoupment  or  termination
whatsoever or by reason of the invalidity, illegality or unenforceability of the
Obligations or otherwise.  Without limiting the generality of the foregoing, the
obligations of each STFC Guarantor herein shall not be discharged or impaired or
otherwise  affected  by the  failure of any Holder or the  Trustee to assert any
claim or demand or to enforce any remedy under this Indenture,  the Notes or any
other agreement,  by any waiver or modification of any thereof,  by any default,
failure or delay,  willful or otherwise,  in the performance of the obligations,
or by any other act or thing or  omission  or delay to do any other act or thing
which  may or might in any  manner or to any  extent  vary the risk of such STFC
Guarantor or would otherwise  operate as a discharge of such STFC Guarantor as a
matter of law or equity.

               Each STFC  Guarantor  further  agrees that its  Guarantee  herein
shall continue to be effective or be  

                                       67


reinstated,  as the case may be, if at any time payment, or any part thereof, of
principal  or Accreted  Value of or interest on any  Obligation  is rescinded or
must  otherwise be restored by any Holder or the Trustee upon the  bankruptcy or
reorganization of the Company or otherwise.

               In  furtherance  of the  foregoing  and not in  limitation of any
other right which any Holder or the Trustee has at law or in equity  against any
STFC  Guarantor  by virtue  hereof,  upon the  failure of the Company to pay the
principal  or Accreted  Value of or interest on any  Obligation  when and as the
same shall become due, whether at maturity,  by  acceleration,  by redemption or
otherwise,  or to  perform  or  comply  with any  other  Obligation,  each  STFC
Guarantor  hereby  promises to and will,  upon receipt of written  demand by the
Trustee,  forthwith  pay,  or cause to be paid,  in cash,  to the Holders or the
Trustee an amount equal to the sum of (i) the unpaid amount of such Obligations,
(ii) accrued and unpaid interest on such Obligations (but only to the extent not
prohibited by law) and (iii) all other  monetary  Obligations  of the Company to
the Holders and the Trustee.

               Each STFC  Guarantor  agrees that it shall not be entitled to any
right of  subrogation  in respect of any  Obligations  guaranteed  hereby  until
payment in full of all  Obligations and all obligations to which the Obligations
are subordinated as provided in ArticleE12.  Each STFC Guarantor  further agrees
that,  as between it, on the one hand,  and the Holders and the Trustee,  on the
other  hand,  (x) the  maturity  of the  Obligations  Guaranteed  hereby  may be
accelerated  as provided in Article 6 for the purposes of such STFC  Guarantor's
Guarantee  herein,  notwithstanding  any stay,  injunction or other  prohibition
preventing such  acceleration in respect of the Obligations  guaranteed  hereby,
and (y) in the event of any declaration of  acceleration of such  obligations as
provided in ArticleE6,  such Obligations  (whether or not due and payable) shall
forthwith become due and payable by such STFC Guarantor for the purposes of this
Section.

               Each  STFC  Guarantor  also  agrees  to pay any and all costs and
expenses (including  reasonable  attorneys' fees) incurred by the Trustee or any
Holder in enforcing any rights under this Section.

               SECTION 11.02. Limitation on Liability.  Any term or provision of
this Indenture to the contrary notwithstanding, the maximum, aggregate amount of
the  obligations  guaranteed  hereunder by any  Subsidiary  Guarantor  shall not
exceed the maximum amount that can be hereby  guaranteed  without rendering this
Indenture, as it relates to such Subsidiary Guarantor, voidable under applicable
law relating to fraudulent  conveyance  or  fraudulent  transfer or 

                                       68


similar laws affecting the rights of creditors  generally  (taking into account,
for purposes of such determination,  the full amount, without any reduction,  of
such STFC Guarantor's  liability under its guarantee of Bank Indebtedness or any
other guarantee of Senior Indebtedness).

               SECTION 11.03.  Successors and Assigns.  This ArticleE11 shall be
binding upon each STFC  Guarantor and its successors and assigns and shall enure
to the benefit of the successors and assigns of the Trustee and the Holders and,
in the event of any  transfer  or  assignment  of  rights  by any  Holder or the
Trustee,  the rights and privileges  conferred upon that party in this Indenture
and in the Notes shall automatically  extend to and be vested in such transferee
or assignee, all subject to the terms and conditions of this Indenture.

               SECTION  11.04.  No Waiver.  Neither a failure nor a delay on the
part of either the  Trustee or the  Holders in  exercising  any right,  power or
privilege under this Article 11 shall operate as a waiver  thereof,  nor shall a
single or partial exercise thereof preclude any other or further exercise of any
right, power or privilege.  The rights, remedies and benefits of the Trustee and
the Holders herein  expressly  specified are cumulative and not exclusive of any
other rights,  remedies or benefits  which either may have under this Article 11
at law, in equity, by statute or otherwise.

               SECTION 11.05. Modification. No modification, amendment or waiver
of any  provision of this  ArticleE11,  nor the consent to any  departure by any
STFC Guarantor therefrom,  shall in any event be effective unless the same shall
be in writing and signed by the Trustee,  and then such waiver or consent  shall
be effective only in the specific  instance and for the purpose for which given.
No notice to or demand on any STFC Guarantor in any case shall entitle such STFC
Guarantor to any other or further notice or demand in the same, similar or other
circumstances.

               SECTION 11.06.  Release of  Subsidiary  Guarantor.  Upon the sale
(including  any sale  pursuant to any exercise of remedies by a holder of Senior
Indebtedness) or other disposition (including by way of consolidation or merger)
of a Subsidiary  Guarantor,  or the sale or disposition of all or  substantially
all the  assets of such  Subsidiary  Guarantor  (in each case  other than to the
Company or an Affiliate of the  Company),  such  Subsidiary  Guarantor  shall be
deemed released from all obligations  under this ArticleE11  without any further
action required on the part of the Trustee or any Holder.  At the request of the
Company,  the  Trustee  shall  execute  and  deliver an  appropriate  instrument
evidencing such release.

                                       69


                                   ARTICLE 12

                        Subordination of STFC Guaranties

               SECTION 12.01.  Agreement  To  Subordinate.  Each STFC  Guarantor
agrees, and each Noteholder by accepting a Note agrees,  that the Obligations of
such STFC Guarantor are  subordinated in right of payment,  to the extent and in
the  manner  provided  in this  Article  12, to the prior  payment of all Senior
Indebtedness  of such  STFC  Guarantor  and  that the  subordination  is for the
benefit of and  enforceable  by the  holders of such  Senior  Indebtedness.  The
Obligations of an STFC Guarantor  shall in all respects rank pari passu with all
other Senior  Subordinated  Indebtedness  of such STFC Guarantor and only Senior
Indebtedness of such STFC Guarantor  (including such STFC Guarantor's  Guarantee
of Senior  Indebtedness  of the Company) shall rank senior to the Obligations of
such STFC Guarantor in accordance with the provisions set forth herein.

               SECTION 12.02.  Liquidation,  Dissolution,  Bankruptcy.  Upon any
payment or  distribution of the assets of any STFC Guarantor to creditors upon a
total or  partial  liquidation  or a total or partial  dissolution  of such STFC
Guarantor  or  in a  bankruptcy,  reorganization,  insolvency,  receivership  or
similar proceeding relating to such STFC Guarantor or its property:

               (1) holders of Senior  Indebtedness  of such STFC Guarantor shall
         be entitled to receive  payment in full of such Senior  Indebtedness in
         cash or cash  equivalents  before  Noteholders  shall  be  entitled  to
         receive any payment pursuant to any Obligations of such STFC Guarantor;
         and

               (2) until the Senior  Indebtedness  of any STFC Guarantor is paid
         in  full  in  cash  or cash  equivalents,  any  distribution  to  which
         Noteholders  would be entitled but for this Article 12 shall be made to
         holders of such  Senior  Indebtedness  as their  interests  may appear,
         except  that  Noteholders  may  receive  shares  of stock  and any debt
         securities  of such  STFC  Guarantor  that are  subordinated  to Senior
         Indebtedness,  and to any debt securities received by holders of Senior
         Indebtedness, of such STFC Guarantor to at least the same extent as the
         Obligations  of  such  STFC  Guarantor  are   subordinated   to  Senior
         Indebtedness of such STFC Guarantor.

               SECTION 12.03.  Default on Senior Indebtedness of STFC Guarantor.
No STFC  Guarantor may make any payment  pursuant to any of its  Obligations  or
repurchase, redeem or otherwise retire or defease any Notes or other Obligations
(collectively,  "pay its Guaranty") if (i) any Designated Senior Indebtedness of
the Company is not paid when due or (ii) any other default on Designated  Senior
Indebtedness  of 

                                       70


the Company occurs and the maturity of such  Designated  Senior  Indebtedness is
accelerated in accordance with its terms unless, in either case, (x) the default
has been  cured  or  waived  and any such  acceleration  has been  rescinded  or
(y) such  Designated  Senior  Indebtedness  has  been  paid in  full;  provided,
however,  that any STFC  Guarantor  may pay its Guaranty  without  regard to the
foregoing  if  such  STFC  Guarantor  and the  Trustee  receive  written  notice
approving  such  payment  from  the  Representatives  of the  Designated  Senior
Indebtedness.  No STFC Guarantor may pay its Guaranty  during the continuance of
any Payment  Blockage  Period after  receipt by the Company and the Trustee of a
Payment Notice under Section 10.03.  Notwithstanding the provisions described in
the immediately  preceding sentence (but subject to the provisions  contained in
the first  sentence of this  Section),  unless the holders of Designated  Senior
Indebtedness  giving such Payment Notice or the  Representative  of such holders
shall have accelerated the maturity of such Designated Senior Indebtedness,  any
STFC  Guarantor  may resume  payments  pursuant  to its  Obligations  after such
Payment Blockage Period.

               SECTION 12.04.  Demand for  Payment.  If a demand for  payment is
made on an STFC  Guarantor  pursuant to  ArticleE11,  the Trustee shall promptly
notify  the   holders  of  the   Designated   Senior   Indebtedness   (or  their
Representatives) of such demand.

               SECTION 12.05.   When  Distribution  Must  Be  Paid  Over.  If  a
distribution  is made to Noteholders  that because of this Article 12 should not
have been made to them, the Noteholders who receive the distribution  shall hold
it in trust for holders of the relevant Senior  Indebtedness  and pay it over to
them or their Representatives as their interests may appear.

               SECTION 12.06.  Subrogation.  After all Senior Indebtedness of an
STFC Guarantor is paid in full and until the Notes are paid in full, Noteholders
shall be  subrogated  to the rights of holders of such  Senior  Indebtedness  to
receive  distributions  applicable to Senior  Indebtedness.  A distribution made
under this  Article 12 to holders of such Senior  Indebtedness  which  otherwise
would  have been made to  Noteholders  is not,  as  between  the  relevant  STFC
Guarantor  and  Noteholders,  a payment by such STFC  Guarantor  on such  Senior
Indebtedness.

               SECTION 12.07.  Relative  Rights.  This  Article 12  defines  the
relative  rights of Noteholders  and holders of Senior  Indebtedness  of an STFC
Guarantor. Nothing in this Indenture shall:

               (1) impair,  as between an STFC  Guarantor and  Noteholders,  the
         obligation of such STFC Guarantor, which is 

                                       71


         absolute and  unconditional,  to pay its  Obligations to the extent set
         forth in ArticleE11 or the relevant Guaranty; or

               (2) prevent  the Trustee or any  Noteholder  from  exercising its
         available  remedies  upon a default  by such STFC  Guarantor  under its
         Obligations, subject to the rights of holders of Senior Indebtedness of
         such STFC  Guarantor  to  receive  distributions  otherwise  payable to
         Noteholders.

               SECTION 12.08.  Subordination May Not Be Impaired by Company.  No
right of any holder of Senior  Indebtedness of any STFC Guarantor to enforce the
subordination of the Obligations of such STFC Guarantor shall be impaired by any
act or failure to act by such STFC  Guarantor  or by its  failure to comply with
this Indenture.

               SECTION 12.09.    Rights   of   Trustee    and   Paying    Agent.
Notwithstanding  Section 12.03, the Trustee or Paying Agent may continue to make
payments  on any  Guaranty  and  shall  not be  charged  with  knowledge  of the
existence of facts that would  prohibit the making of any such payments  unless,
not less  than two  Business  Days  prior to the date of such  payment,  a Trust
Officer of the Trustee receives written notice  satisfactory to it that payments
may not be made under this Article 12. The Company, the relevant STFC Guarantor,
the Registrar or co-registrar, the Paying Agent, a Representative or a holder of
Senior  Indebtedness  of any  STFC  Guarantor  may give  the  notice;  provided,
however,  that, if an issue of Senior  Indebtedness  of any STFC Guarantor has a
Representative, only the Representative may give the notice.

               The  Trustee in its  individual  or any other  capacity  may hold
Senior  Indebtedness  with the same rights it would have if it were not Trustee.
The  Registrar and  co-registrar  and the Paying Agent may do the same with like
rights.  The  Trustee  shall be  entitled  to all the  rights  set forth in this
Article 12 with respect to any Senior  Indebtedness  of any STFC Guarantor which
may at any time be held by it, to the same extent as any other  holder of Senior
Indebtedness;  and nothing in Article 7 shall  deprive the Trustee of any of its
rights as such  holder.  Nothing in this Article 12 shall apply to claims of, or
payments to, the Trustee under or pursuant to Section 7.07.

               SECTION 12.10. Distribution or Notice to Representative. Whenever
a distribution is to be made or a notice given to holders of Senior Indebtedness
of any STFC  Guarantor,  the  distribution  may be made and the notice  given to
their Representative (if any).

               SECTION 12.11.   ArticleE12  Not  To  Prevent  Defaults  Under  a
Guaranty  or Limit  Right To  Demand  Payment.  The  failure  to make a  payment
pursuant to a Guaranty by reason of 

                                       72


any  provision  in this  Article 12 shall not be  construed  as  preventing  the
occurrence  of a default under such  Guaranty.  Nothing in this Article 12 shall
have any effect on the right of the  Noteholders or the Trustee to make a demand
for  payment  on any STFC  Guarantor  pursuant  to  ArticleE11  or the  relevant
Guaranty.

               SECTION 12.12.  Trustee  Entitled  To Rely.  Upon any  payment or
distribution  pursuant to this Article 12, the Trustee and the Noteholders shall
be  entitled  to rely  (i) upon  any  order or  decree  of a court of  competent
jurisdiction in which any proceedings of the nature referred to in Section 12.02
are pending,  (ii) upon a  certificate  of the  liquidating  trustee or agent or
other  Person  making  such  payment or  distribution  to the  Trustee or to the
Noteholders  or  (iii) upon  the  Representatives  for  the  holders  of  Senior
Indebtedness of any STFC Guarantor for the purpose of  ascertaining  the Persons
entitled to  participate  in such payment or  distribution,  the holders of such
Senior  Indebtedness and other  indebtedness of such STFC Guarantor,  the amount
thereof or payable  thereon,  the amount or amounts paid or distributed  thereon
and all other facts  pertinent  thereto or to this Article 12. In the event that
the Trustee determines, in good faith, that evidence is required with respect to
the right of any Person as a holder of Senior Indebtedness of any STFC Guarantor
to participate in any payment or  distribution  pursuant to this Article 12, the
Trustee  may  request  such  Person  to  furnish   evidence  to  the  reasonable
satisfaction of the Trustee as to the amount of Senior Indebtedness of such STFC
Guarantor  held by such  Person,  the extent to which such Person is entitled to
participate  in such payment or  distribution  and other facts  pertinent to the
rights of such  Person  under this  ArticleE12,  and,  if such  evidence  is not
furnished,  the Trustee may defer any  payment to such Person  pending  judicial
determination  as to the  right of such  Person to  receive  such  payment.  The
provisions  of  Sections  7.01 and 7.02 shall be  applicable  to all  actions or
omissions of actions by the Trustee pursuant to this Article 12.

               SECTION 12.13.   Trustee  To   Effectuate   Subordination.   Each
Noteholder by accepting a Note  authorizes and directs the Trustee on his behalf
to take  such  action as may be  necessary  or  appropriate  to  acknowledge  or
effectuate the  subordination  between the Noteholders and the holders of Senior
Indebtedness  of any STFC  Guarantor as provided in this Article 12 and appoints
the Trustee as attorney-in-fact for any and all such purposes.

               SECTION 12.14.  Trustee  Not  Fiduciary  for  Holders  of  Senior
Indebtedness  of STFC  Guarantor.  The  Trustee  shall  not be deemed to owe any
fiduciary duty to the holders of Senior  Indebtedness  of any STFC Guarantor and
shall not be  liable  to 

                                       73


any such holders if it shall mistakenly pay over or distribute to Noteholders or
the  Company or any other  Person,  money or assets to which any holders of such
Senior Indebtedness shall be entitled by virtue of this Article 12 or otherwise.

               SECTION 12.15.  Reliance by Holders of Senior  Guarantor  Debt on
Subordination  Provisions.  Each Noteholder by accepting a Note acknowledges and
agrees that the foregoing subordination  provisions are, and are intended to be,
an inducement and a consideration  to each holder of any Senior  Indebtedness of
any STFC  Guarantor,  whether such Senior  Indebtedness  was created or acquired
before or after the issuance of the Notes,  to acquire and continue to hold,  or
to  continue  to hold,  such  Senior  Indebtedness  and such  holder  of  Senior
Indebtedness  shall be deemed  conclusively to have relied on such subordination
provisions in acquiring and  continuing to hold, or in continuing to hold,  such
Senior Indebtedness.


                                   ARTICLE 13

                                  Miscellaneous


               SECTION 13.01. Trust Indenture Act Controls.  If any provision of
this Indenture  limits,  qualifies or conflicts with another  provision which is
required to be included in this  Indenture by the TIA,  the  required  provision
shall control.

               SECTION 13.02.  Notices.  Any notice or communication shall be in
writing and  delivered  in person or mailed by  first-class  mail  addressed  as
follows:

               if to the Company or any STFC Guarantor:

                           Shared Technologies Fairchild Corp.
                           100 Great Meadow Road
                           Wethersfield, Connecticut 06109

                           Attention:       KennethEM. Dorros
                                            Senior Vice President, General
                                            Counsel and Secretary

               if to the Trustee:

                           United States Trust Company of New York
                           114 West 47th Street
                           New York, New York 10036

                           Attention:       RobertEF. Lee
                                            Corporate Trust Administration

                                       74


               if to the Representative of the Designated Senior Indebtedness:

                           Credit Suisse
                           Tower 49
                           12EEast 49th Street
                           New York, New York 10017

                           Attention:       Lisa Perrotto
                                            Agency Group

               The Company or the  Trustee by notice to the other may  designate
additional or different addresses for subsequent notices or communications.

               Any  notice  or  communication  mailed to a  Noteholder  shall be
mailed to the  Noteholder  at the  Noteholder's  address  as it  appears  on the
registration books of the Registrar and shall be sufficiently given if so mailed
within the time prescribed.

               Failure to mail a notice or  communication to a Noteholder or any
defect in it shall not affect its sufficiency with respect to other Noteholders.
If a notice or  communication is mailed in the manner provided above, it is duly
given, whether or not the addressee receives it.

               SECTION  13.03.  Communication  by Holders  with  Other  Holders.
Noteholders  may communicate  pursuant to TIA ss. 312(b) with other  Noteholders
with respect to their rights under this Indenture or the Notes. The Company, the
Trustee,  the  Registrar  and anyone else shall have the  protection  of TIA ss.
312(c).

               SECTION   13.04.   Certificate   and  Opinion  as  to  Conditions
Precedent. Upon any request or application by the Company to the Trustee to take
or refrain  from  taking any action  under this  Indenture,  the  Company  shall
furnish to the Trustee:

               (1) an  Officers'  Certificate  in form and substance  reasonably
         satisfactory  to  the  Trustee  stating  that,  in the  opinion  of the
         signers,  all  conditions  precedent,  if  any,  provided  for in  this
         Indenture relating to the proposed action have been complied with; and

               (2) an  Opinion  of  Counsel  in form  and  substance  reasonably
         satisfactory  to the  Trustee  stating  that,  in the  opinion  of such
         counsel, all such conditions precedent have been complied with.

                                       75


               SECTION  13.05.  Statements  Required in  Certificate or Opinion.
Each  certificate  or opinion  with  respect to  compliance  with a covenant  or
condition provided for in this Indenture shall include:

               (1) a  statement that the individual  making such  certificate or
         opinion has read such covenant or condition;

               (2) a  brief  statement  as  to  the  nature  and  scope  of  the
         examination  or  investigation  upon which the  statements  or opinions
         contained in such certificate or opinion are based;

               (3) a statement that, in the opinion of such  individual,  he has
         made such examination or investigation as is necessary to enable him to
         express an  informed  opinion as to  whether  or not such  covenant  or
         condition has been complied with; and

               (4) a  statement  as to  whether or not,  in the  opinion of such
         individual, such covenant or condition has been complied with.

               SECTION 13.06. When Notes Disregarded. In determining whether the
Holders  of the  required  principal  amount  of  Notes  have  concurred  in any
direction,  waiver or  consent,  Notes  owned by the  Company  or by any  Person
directly or indirectly  controlling or controlled by or under direct or indirect
common  control  with the  Company  shall be  disregarded  and  deemed not to be
outstanding,  except that,  for the purpose of  determining  whether the Trustee
shall be protected  in relying on any such  direction,  waiver or consent,  only
Notes which the Trustee receives an Officer's  Certificate  certifying that such
Notes are so owned shall be so disregarded. Also, subject to the foregoing, only
Notes outstanding at the time shall be considered in any such determination.

               SECTION 13.07. Rules by Trustee, Paying Agent and Registrar.  The
Trustee may make reasonable rules for action by or a meeting of Noteholders. The
Registrar and the Paying Agent may make reasonable rules for their functions.

               SECTION 13.08. Legal Holidays. A "Legal Holiday" is a Saturday, a
Sunday or a day on which banking institutions are not required to be open in the
State of New York. If a payment date is a Legal  Holiday,  payment shall be made
on the next  succeeding day that is not a Legal  Holiday,  and no interest shall
accrue for the intervening  period. If a regular record date is a Legal Holiday,
the record date shall not be affected.

               SECTION 13.09.  Governing Law. This Indenture and the Notes shall
be governed  by, and  construed  in  accordance  with,  the laws of the State of
New York but without giving 

                                       76


effect to  applicable  principles  of  conflicts  of law to the extent  that the
application of the laws of another jurisdiction would be required thereby.

               SECTION 13.10. No Recourse Against Others.  A director,  officer,
employee or stockholder, as such, of the Company or any STFC Guarantor shall not
have any  liability for any  obligations  of the Company under the Notes or this
Indenture  or for any  claim  based  on,  in  respect  of or by  reason  of such
obligations or their creation.  By accepting a Note, each Noteholder shall waive
and release  all such  liability.  The waiver and  release  shall be part of the
consideration for the issue of the Notes.

               SECTION 13.11. Successors.  All agreements of the Company and the
STFC  Guarantors in this Indenture and the Notes and  Guaranties  shall bind its
successors.  All  agreements  of the  Trustee in this  Indenture  shall bind its
successors.

               SECTION  13.12.  Multiple  Originals.  The  parties  may sign any
number of copies of this Indenture.  Each signed copy shall be an original,  but
all of them together represent the same agreement.  One signed copy is enough to
prove this Indenture.

               SECTION  13.13.  Table  of  Contents;   Headings.  The  table  of
contents,  cross-reference  sheet and  headings of the  Articles and Sections of
this  Indenture have been inserted for  convenience  of reference  only, are not
intended to be  considered a part hereof and shall not modify or restrict any of
the terms or provisions hereof.

               IN WITNESS WHEREOF,  the parties have caused this Indenture to be
duly executed as of the date first written above.


                                       SHARED TECHNOLOGIES FAIRCHILD
                                       COMMUNICATIONSECORP.,

                                       by: /s/ Vincent DiVincenzo
                                          ------------------------
                                          Name:  Vincent DiVincenzo
                                          Title:  Treasurer


                                       SHARED TECHNOLOGIES INC.,
                                       as Guarantor,

                                       by: /s/ Vincent DiVincenzo
                                          ------------------------
                                          Name:  Vincent DiVincenzo
                                          Title:  Treasurer

                                       77


                                       MULTI-TENANT SERVICES, INC.,
                                       as Guarantor,

                                       by: /s/ Vincent DiVincenzo
                                          ------------------------
                                          Name:  Vincent DiVincenzo
                                          Title:  Treasurer


                                       BOSTON TELECOMMUNICATIONS
                                       GROUP, INC.,
                                       as Guarantor,

                                       by: /s/ Vincent DiVincenzo
                                          ------------------------
                                          Name:  Vincent DiVincenzo
                                          Title:  Treasurer


                                       OFFICE TELEPHONE MANAGEMENT,
                                       as Guarantor,

                                       by: /s/ Vincent DiVincenzo
                                          ------------------------
                                          Name:  Vincent DiVincenzo
                                          Title:  Treasurer


                                       STI INTERNATIONAL, INC.,
                                       as Guarantor,

                                       by: /s/ Vincent DiVincenzo
                                          ------------------------
                                          Name:  Vincent DiVincenzo
                                          Title:  Treasurer



                                       UNITED STATES TRUST COMPANY OF
                                       NEW YORK,

                                       by: /s/ Gerard V. Ganey
                                          ------------------------
                                          Name: Gerard V. Ganey
                                          Title: Senior Vice President