Exhibt 10.1

                AMENDED AND RESTATED CDMA MASTER SUPPLY AGREEMENT

                                     BETWEEN

                       UNITED STATES CELLULAR CORPORATION

                                       AND

                              NORTEL NETWORKS INC.





                             TABLE OF CONTENTS

     SECTION                                                       PAGE

1.   DEFINITIONS                                                      1
2.   SCOPE                                                            5
3.   PURCHASE ORDERS                                                  6
4.   PRICE                                                            7
5.   PAYMENT                                                          8
6.   DELIVERY, RISK OF LOSS, TITLE                                   10
7.   WARRANTIES, REMEDIES AND LIMITATION OF WARRANTIES
     AND REMEDIES AND DISCLAIMERS OF WARRANTIES AND
     LIABILITY                                                       13
8.   FORCE MAJEURE                                                   16
9.   PATENT OR COPYRIGHT INFRINGEMENTS                               17
10.  SOFTWARE LICENSE                                                19
11.  SOFTWARE UPDATES                                                20
12.  REMEDIES                                                        20
13.  BUYER'S RESPONSIBILITIES                                        22
14.  TESTING, TURNOVER AND ACCEPTANCE                                23
15.  COVERAGE, INTERFERENCE AND THIRD-PARTY FACILITIES               24
16.  REGULATORY COMPLIANCE                                           24
17.  CHANGES                                                         25
18.  CONDITION OF INSTALLATION SITE(S)                               26
19.  RELEASE OF INFORMATION                                          26
20.  CONFIDENTIALITY                                                 26
21.  INTERCONNECTION TO SWITCH                                       27
22.  EQUIPMENT CHANGES                                               27
23.  LONG TERM SUPPORT                                               28
24.  INSURANCE; GENERAL INDEMNITY; LIMITATION OF
     LIABILITY                                                       29
25.  SUPPLEMENT AND ANNEXES                                          30
26.  GENERAL                                                         30

                                       i




SUPPLEMENT AND ANNEXES

SUPPLEMENT 1  -     SPECIFIC TERMS RELATED TO EQUIPMENT PRICING, PRODUCT CREDITS
                    AND DISCOUNTS, TRADE-IN ALLOWANCES AND TRAINING
ANNEX 1       -     HARDWARE DESCRIPTIONS
ANNEX 2       -     SERVICES DESCRIPTIONS
ANNEX 3       -     STATEMENT OF WORK
ANNEX 4       -     TURNOVER AND ACCEPTANCE NOTICES
ANNEX 5       -     WARRANTY SERVICES
ANNEX 6       -     SAMPLE PROJECT PLAN
ANNEX 7       -     AFFILIATES
ANNEX 8       -     SOFTWARE ACCESS
ANNEX 9       -     MTX10 AND MTX 11 SOFTWARE

                                       ii







                AMENDED AND RESTATED CDMA MASTER SUPPLY AGREEMENT

THIS AMENDED AND RESTATED CDMA MASTER SUPPLY  AGREEMENT  (this  "Agreement")  is
effective  as of April 18, 2002 (the  "Effective  Date") by and  between  United
States Cellular Corporation, a Delaware corporation with offices located at 8410
West Bryn Mawr Avenue, Suite 700, Chicago,  Illinois 60631 ("Buyer"), and Nortel
Networks  Inc., a Delaware  corporation  with offices  located at 2221  Lakeside
Boulevard, Richardson, TX 75082 ("Seller").

                                   WITNESSETH:

WHEREAS,  Buyer and Seller entered into the CDMA Master Supply  Agreement  dated
April 18, 2002 for the sale and purchase of Seller's CDMA equipment and services
("Existing CDMA Agreement"); and,

WHEREAS,  the parties wish to amend and restate the Existing  CDMA  Agreement to
effect certain amendments and changes to the Existing CDMA Agreement:

NOW,   THEREFORE,   in  consideration  of  the  mutual  promises  and  covenants
hereinafter set forth, the parties hereby agree as follows:

1.   DEFINITIONS
     -----------

     As  used  herein,  the  following  capitalized  terms  have  the  following
     meanings:

1.1  "Affiliate"  shall mean any entity that is (a) owned directly or indirectly
     by Buyer or  Buyer's  parent  company,  Telephone  and Data  Systems,  Inc.
     ("TDS");  (b) controlled  directly or indirectly by Buyer or TDS; (c) under
     common  ownership  with Buyer or TDS,  directly  or  indirectly;  (d) under
     common control with Buyer or TDS,  directly or  indirectly;  or (e) managed
     (pursuant to a management  agreement) by Buyer, TDS or an entity that falls
     within the  description  set forth in clause (a),  (b),  (c) or (d) of this
     definition.  For  purposes  of this  definition  (i)  "control"  (and  with
     correlative  meaning,  "controlled")  shall  mean the  ability to direct or
     cause the direction of the management and operating  policies of an entity,
     whether  by  contract  or  otherwise;   and  (ii)   "ownership"  (and  with
     correlative  meaning,  "owned") shall mean the possession of 50% or more of
     the voting securities or other voting equity interest in an entity. Annex 7
     is a list of the Affiliates.

1.2  "Aggregate Volume Commitment" shall mean the purchase hereunder by Buyer of
     Equipment (and related Services) for a total of 3500 Minimum Configurations
     during the Term.

1.3  "BSC" shall mean a Seller-engineered  CDMA base station controller that (a)
     provides  radio  channel  management  between a Switch  and a BTS,  and (b)
     includes a base station manager ("BSM").

                                       1



1.4  "BTS" shall mean a Seller-engineered CDMA base transceiver station that (a)
     provides a radio link with mobile  subscribers,  and (b) is controlled by a
     BSC.

1.5  "Buyer's Expanded  Network" shall mean Buyer's wireless  telecommunications
     network  which shall not have more than 75 Switches or more than  7,500,000
     subscribers.

1.6  "CDMA" shall mean Code  Division  Multiple  Access-based  telecommunication
     services operational in the 800 MHz or 1900 MHz band of the electromagnetic
     spectrum.

1.7  "Commissioning"  shall mean Seller's on-site testing of installed Equipment
     to determine whether such Equipment complies with the applicable Acceptance
     Criteria (as defined in Section 14.1).

1.8  "Cumulative  Annual Volume Commitment" shall mean the purchase hereunder by
     Buyer of  Equipment  (and related  Services)  for the  specified  number of
     Minimum  Configurations  during the period commencing on the Effective Date
     and  ending  at the end of the  applicable  time  period  set  forth in the
     following table:

                                          Cumulative Annual
                 Time Period              Volume Commitment
     -------------------------------------------------------
       From the Effective Date through           500
                Dec. 31, 2002

             Calendar Year 2003                 1100

             Calendar Year 2004                 1900

             Calendar Year 2005                 2700

             Calendar Year 2006                 3500

1.9  "Documentation" shall mean (a) the Equipment-related documentation provided
     by Seller (including, without limitation,  applicable installation manuals,
     Nortel  Networks  Practices  ("NTPs"),  maintenance  instructions  and user
     manuals)  that  contains  the  Specifications  and  describes in detail the
     engineering, installation, commissioning, maintenance, operation and repair
     of the Equipment;  and (b) any other  documentation or other materials that
     Seller  generally  provides  to  purchasers  of  the  Equipment;  provided,
     however,  that  "Documentation"  shall not  include  the  Materials  or the
     Training Manuals.

1.10 "Equipment"  shall mean, either singularly or collectively (as the case may
     be),  the  Hardware and  Software  products  provided by Seller  hereunder.
     Subject to the limitations  set forth in Section 2.1(d),  the terms of this
     Agreement  applicable to  "Equipment"  shall also be deemed to apply to OEM
     Equipment, unless otherwise expressly indicated in this Agreement.

                                       2


1.11 "Freight"   shall  mean  freight,   freight-related   insurance  and  other
     freight-related costs and expenses.

1.12 "Hardware" shall mean,  either  singularly or collectively (as the case may
     be),  the  CDMA  800 MHz  and  CDMA  1900  MHz  Seller-engineered  hardware
     components  including,  without  limitation,  the hardware  portions of the
     BSCs, BTSs, Switches, Systems, and Merchandise.

1.13 "Installation"  shall mean the  installation  of Equipment by Seller at the
     Installation Site in accordance with the applicable Documentation, Purchase
     Order and the provisions set forth in Annex 3.

1.14 "Installation  Site"  shall  mean  the  location  (in  the  United  States)
     specified by Buyer in a site-specific  Purchase Order for Equipment if such
     Purchase Order provides for Installation.

1.15 "Market"  shall mean (a) any MSA,  RSA,  MTA or BTA, as such are defined by
     the FCC, or (b) any other geographic area or similar  apportionment defined
     by  the   FCC   from   time   to   time   in   connection   with   wireless
     telecommunications.

1.16 "Merchandise"  shall  mean  miscellaneous  Hardware  with  respect to which
     Seller does not provide Installation or Commissioning;  provided,  however,
     that "Merchandise" shall not include BSCs, BTSs, Switches, or Systems.

1.17 "Materials"  shall mean any and all designs,  documentation  and other work
     product  prepared by Seller and delivered to Buyer  pursuant to the support
     Services set forth in Annex 2; provided,  however,  that "Materials"  shall
     not include any Software.

1.18 "Minimum Configuration" shall mean a BTS consisting of one 800 MHz, 24 Vdc,
     1 Cxr, MFRM w/128 CEs and 1xVoice Software (or the equivalent thereof).

1.19 "OEM  Equipment"  shall mean any  hardware or software  made  available  by
     Seller  for  sale  to  Buyer   under  this   Agreement   that  (a)  is  not
     Seller-engineered  or  Seller-proprietary,  (b) is not integrated  into the
     Equipment  during  the  manufacturing  process;  and  (c)  is  specifically
     identified by Seller as (i) OEM Equipment, or (ii) a vendor item on certain
     price quotations by Seller.

1.20 "Optional Features" shall mean certain features of the Software that may be
     activated at Buyer's  option upon the payment of certain  license  fees, if
     applicable, and are not licensed as part of a Universal Load.

1.21 "Project" shall mean the delivery, Installation and Commissioning by Seller
     of 200 or more BTSs in accordance with a mutually agreed upon plan pursuant
     to which Seller  shall ship such  Equipment  initially to a  Seller-managed
     warehouse.

1.22 "Project  Schedule"  shall  mean the  Ship  Date,  delivery,  Installation,
     Commissioning  and Turnover  dates,  as  applicable,  proposed by Buyer and
     accepted by Seller in connection with any Equipment purchased hereunder.

                                       3


1.23 "Purchase Order" shall mean any purchase order issued to Seller by Buyer or
     an Affiliate pursuant to Section 3.

1.24 "Services"  shall  mean  those  services  performed  by Seller  under  this
     Agreement including  delivery,  Installation,  Commissioning,  warranty and
     post-warranty support.

1.25 "Ship Date" shall mean the date set forth in the Project Schedule or on the
     applicable  Purchase  Order (which has been accepted by Seller) as the date
     for shipment of the  applicable  Equipment  from  Seller's  facility to the
     Initial Delivery Location.

1.26 "Software" shall mean,  either  singularly or collectively (as the case may
     be), the CDMA 800 MHz and CDMA 1900 MHz  Seller-proprietary and third-party
     software computer programs  (consisting of firmware and logic  instructions
     in machine-readable code residing in, or intended to be loaded in, Hardware
     memories  providing basic logic,  operating  instructions  and user-related
     application  instructions) as well as the related  Documentation;  provided
     that "Software"  shall not include any of Buyer's data or Buyer's  customer
     data.

1.27 "Software  Release"  shall  mean  the  Universal  Load  and the  applicable
     Optional Features for each version of the Software.

1.28 "Special  Delivery" shall mean the delivery of Equipment which requires the
     use of  personnel,  methods  and/or  tools  in  excess  of  reasonable  and
     customary  delivery  (i.e.,  by not more than two delivery  personnel via a
     lift truck) of Equipment;  provided that "Special  Delivery" shall include,
     without  limitation,  delivery using a crane, heavy duty fork lift, special
     delivery vehicle (e.g., snowmobile,  helicopter,  boom truck), or more than
     two delivery personnel.

1.29 "Specifications" shall mean the technical  specifications that describe and
     explain the standard  functional  capabilities of and  requirements for the
     Equipment and Services as set forth in the applicable Documentation.

1.30 "Standards"  shall  mean the  then-current  interim  or final  versions  of
     technical specifications developed by one of the ANSI-accredited  standards
     organizations governing the operational and/or interface standards for CDMA
     800 MHz or CDMA 1900 MHz hardware and software.

1.31 "Switch" shall mean any of Seller's DMS-MTX family of switches.

1.32 "System" shall mean a Switch along with its related BTSs.

1.33 "Term" shall mean the period commencing on the Effective Date and ending on
     December 31, 2006, unless  terminated  earlier in accordance with the terms
     and conditions  hereof.  If Buyer satisfies the Aggregate Volume Commitment
     on or before December 31, 2006, Buyer may, at its sole  discretion,  extend
     the Term for a period not to exceed one year upon written  notice to Seller
     on or before December 31, 2006.

                                       4


1.34 "Third-Party  CDMA Cell Site"  shall mean a CDMA base  transceiver  station
     that is functionally equivalent to a BTS and was engineered and supplied by
     a third-party supplier.

1.35 "Training  Manuals"  shall  mean the  manuals  and  other  training  course
     materials  provided by Seller to participants in Seller's training courses;
     provided,   however,   that  "Training   Manuals"  shall  not  include  the
     Documentation or the Materials.

1.36 "Universal Load" shall mean Seller's commercially  available base operating
     Software  together  with certain  standard  incremental  subscriber  and/or
     carrier software features included at Seller's sole discretion.

1.37 "Warranty Period" shall mean:

     1.37.1  With respect to Hardware for which  Installation and  Commissioning
             is  performed  by Seller  (other  than as part of a  Project),  the
             period  commencing on the Turnover Date and ending upon the earlier
             to occur of (a) the date that is twelve  months  after the Turnover
             Date,  or (b) the date  that is  fifteen  months  after the date of
             shipment  (subject to Sections 6.6 and 6.8) to the Initial Delivery
             Location;  provided,  however, if Seller fails to complete Turnover
             within 90 days after the date of shipment  to the Initial  Delivery
             Location,  for reasons  attributable  to Seller or its agents,  the
             Warranty  Period shall be extended on a day-for-day  basis for each
             day thereafter until Turnover is achieved.


     1.37.2  With respect to Hardware for which  Installation and  Commissioning
             is performed  by Seller in  connection  with a Project,  the period
             commencing  on the  Turnover  Date and ending upon the date that is
             twelve months after the Turnover Date.

     1.37.3  With respect to Hardware  installed or commissioned  by Buyer,  the
             sixteen-month  period  commencing on the date of shipment by Seller
             to the Initial Delivery Location.

     1.37.4  With  respect  to  a  Software  Release,  the  twelve-month  period
             commencing  on the date that such  Software  Release  is  initially
             implemented in Buyer's wireless telecommunications network.

     1.37.5  With respect to Merchandise,  the twelve-month period commencing on
             the date of shipment by Seller of such Merchandise.

     1.37.6  With respect to any Service,  the 30-day  period  commencing on the
             date of completion of such Service.

2.   SCOPE
     -----

2.1  During the Term, in accordance with an appropriate Purchase Order issued by
     Buyer and accepted by Seller for Equipment and/or  Services,  Seller shall:
     (a) deliver the Equipment and perform Installation and Commissioning of the
     Equipment for use in the United States; (b) acquire and maintain all local,
     state and federal government approvals required

                                       5


     in  Seller's  normal  course  of  doing  business;  (c)  grant  to  Buyer a
     nonexclusive  license to use all Software associated with, and integral to,
     Hardware purchased by Buyer hereunder,  which license shall continue beyond
     the Term provided that such Software has been paid for by Buyer  hereunder;
     and (d) furnish OEM Equipment to Buyer.

2.2  During the Term,  if Buyer or an  Affiliate  desires to purchase  Equipment
     pursuant to this Agreement  other than for use in the United States,  Buyer
     or such Affiliate shall issue a Purchase Order for such Equipment  directly
     to the applicable affiliate of Seller in each applicable territory pursuant
     to the terms of this Agreement  subject to any  modifications to such terms
     that are required to comply with  applicable  laws and  regulations in such
     territory.  Subject to Buyer's  obligations set forth in Section 2.3 below,
     any Purchase Order issued and accepted  hereunder shall create  contractual
     rights and  obligations  solely between Buyer or an Affiliate  which issued
     the  Purchase  Order and Seller or Seller's  Affiliate  which  accepted the
     Purchase Order, unless otherwise expressly set forth in this Agreement.

2.3  Any  Affiliate  may  submit a  Purchase  Order  pursuant  to the  terms and
     conditions of this Agreement; provided, however, that Buyer shall guarantee
     the performance of any such Affiliate's  obligations  under this Agreement,
     including  but  not  limited  to,  such  Affiliate's  payment  obligations.
     References  to Buyer in this  Agreement  shall be  deemed to  include  each
     Affiliate  issuing  a  Purchase  Order  under  this  Agreement,   and  such
     Affiliates,  by  placing  such  Purchase  Orders,  shall be  deemed to have
     accepted the terms and  conditions of this  Agreement  applicable to Buyer.
     Upon written  notice from Buyer to Seller,  Buyer may add  Affiliates to or
     delete  Affiliates  from the list set forth in Annex 7, provided that Buyer
     shall  continue to guarantee the  performance  of any  Affiliate  under any
     Purchase  Order  placed by such  Affiliate  prior to  Seller's  receipt  of
     Buyer's notice of deletion of such Affiliate from Annex 7.

3.   PURCHASE ORDERS
     ---------------

3.1  Notwithstanding that a Purchase Order may not refer to this Agreement,  any
     Purchase Order for Equipment  and/or  Services issued during the Term shall
     be deemed to have  been  issued  pursuant  to this  Agreement  and shall be
     governed by the terms and conditions of this  Agreement  unless the parties
     expressly  agree to the  contrary  in writing.  Except for  non-conflicting
     administrative  terms as provided below, any additional or preprinted terms
     or conditions on any Purchase Order (or on any notice from Seller accepting
     a Purchase Order) shall be null, void and of no effect. Each Purchase Order
     shall specify:

     3.1.1   a  description  of the ordered  Equipment (as set forth in Annex 1)
             and/or  any  Services  (as set  forth  in Annex  2)  including  any
             cross-reference to the Prices set forth in Supplement 1;

     3.1.2   the Initial Delivery Location or Installation Site, as the case may
             be, for the Equipment;

                                       6



     3.1.3   the Prices for the ordered  Equipment  and/or Services as set forth
             in Supplement 1 (or, if not set forth in Supplement 1, as quoted by
             Seller from time to time);

     3.1.4   the Project Schedule or Project Plan (or a proposal for either), as
             the case may be;

     3.1.5   other appropriate  information as may be required by Seller to fill
             the Purchase Order (including,  without  limitation,  Buyer's floor
             plan and frequency  plan),  provided that prior to Buyer's issuance
             of such Purchase Order,  Seller has notified Buyer of Seller's need
             for such information; and

     3.1.6   the location to which the applicable  invoice shall be rendered for
             payment.

3.2  Any Purchase  Order issued by Buyer and not rejected in writing  within ten
     business days after  receipt by Seller shall be deemed  accepted by Seller.
     On the last business day of each week during the Term,  Buyer shall provide
     to Seller a summary of all Purchase Orders  submitted to Seller during such
     week (each, a "Summary").  For the purposes of this Section 3.2,  "receipt"
     by Seller  shall mean the earlier of (a)  Seller's  receipt of the Purchase
     Order,  or (b) Seller's  receipt of a Summary that  includes  such Purchase
     Order.  Buyer  shall not be  obligated  to  provide a Summary  for any week
     during which Buyer does not issue any Purchase Orders.

3.3  Seller shall not reject any Purchase Order for Hardware solely on the basis
     of Seller's inability to comply with Buyer's proposed dates for shipment of
     such Hardware (from  Seller's  facility to the Initial  Delivery  Location)
     unless the proposed  dates for shipment of such  Hardware are  inconsistent
     with the  Intervals  set forth in  Section  6.9.1 or (a) the sum of (i) the
     units of Hardware set forth in such Purchase Order for shipment  during any
     Forecast  Period,  plus  (ii) the units of  Hardware  that have a Ship Date
     during such Forecast Period and are set forth in Purchase  Orders,  if any,
     previously accepted by Seller; is greater than (b) 110% of the Forecast for
     such Forecast Period.

4.   PRICE
     -----

4.1  The prices  for  certain  Equipment,  Merchandise  and  Services  (each,  a
     "Price")  are set forth in  Supplement  1. From time to time,  Seller shall
     quote the price to Buyer for any  Equipment,  Merchandise  or Services  for
     which a Price is not  specified  in  Supplement  1. All Prices set forth in
     this  Agreement  and/or  quoted by  Seller  from time to time are in United
     States dollars.

4.2  Seller  shall  specify  whether or not  Freight is  included in each of the
     Prices  provided to Buyer  pursuant  to this  Agreement.  Unless  otherwise
     specified  in  Supplement  1, except for prices for spares and piece parts,
     all Prices  pursuant to this  Agreement for Equipment to be delivered to an
     Initial Delivery Location within the United States shall include all export
     duties,  import duties and related  customs  charges in connection with the
     shipment of  Equipment  from  Seller's  facility to each  Initial  Delivery
     Location.

4.3  Unless  otherwise  specified  in  Supplement  1,  the unit  Prices  for the
     Equipment   do  not  include   Seller's   charges  for   Installation   and
     Commissioning.  The Prices for  Installation  and  Commissioning of certain
     Equipment are set forth separately in Supplement 1.

                                       7



4.4  After  expiration of the Warranty  Period for certain  Hardware,  Buyer may
     purchase  repair  and/or  replacement  Services  in  connection  with  such
     Hardware at the Prices set forth in Supplement 1.

5.   PAYMENT
     -------

5.1  With  respect to Equipment  for which Seller does not provide  Installation
     and Commissioning, Seller shall invoice Buyer for 100% of the Price of such
     Equipment  and  any  applicable  prepaid  Freight  upon  shipment  of  such
     Equipment  by Seller to the  Initial  Delivery  Location.  With  respect to
     Equipment for which Seller provides Installation and Commissioning,  Seller
     shall invoice Buyer for (a) 90% of the Price of such  Equipment,  inclusive
     of any prepaid Freight,  if applicable,  upon shipment of such Equipment by
     Seller to the Initial Delivery  Location,  (b) the 10% balance of the Price
     of such Equipment upon  Acceptance of such  Equipment,  and (c) 100% of the
     Price of Installation  and  Commissioning of such Equipment upon Acceptance
     of such Equipment.  Seller shall provide each invoice to Buyer on or before
     the second business day after the date of such invoice.  Buyer's payment of
     each invoice  shall be due to Seller  within 30 days after the date of such
     invoice.

     5.1.1   If Seller  fails to  provide  an  invoice to Buyer on or before the
             second  business day after the date of such  invoice,  then the due
             date for  payment of such  invoice  shall be  extended  day-for-day
             until Seller  provides  such invoice to Buyer,  provided that Buyer
             shall be required to provide reasonable  evidence as to the date of
             receipt of such invoice.

     5.1.2   If Buyer receives  Equipment that has sustained  obvious or visible
             damage in transit,  then (a) Buyer  shall  promptly  notify  Seller
             thereof and shall  return such  damaged  Equipment  to Seller;  (b)
             promptly after Seller's  receipt of such notice,  Seller shall ship
             to Buyer a replacement for such damaged Equipment; and (c) the date
             of the  invoice for such  Equipment  shall be deemed to be the date
             that  Seller  ships  such   replacement   Equipment  from  Seller's
             facility.

     5.1.3   If any  portion  of an  invoice  is  the  subject  of a good  faith
             dispute,  Buyer shall  provide in writing the basis for its dispute
             within 30 days  after the date of the  invoice  and the  undisputed
             portion of such  invoice  shall be due and  payable  within 30 days
             after  the  date of the  applicable  invoice.  If such  dispute  is
             resolved  in favor of Buyer,  Seller  shall  invoice  Buyer for the
             correct  amount which shall be due and payable within 30 days after
             the date of such corrected invoice.  If such dispute is resolved in
             favor of Seller,  Buyer's  payment  of the  disputed  amount  shall
             remain  due and  payable  within  30  days  after  the  date of the
             applicable invoice.

5.2  All past due amounts (collectively, "Past Due Amounts") shall bear interest
     at a rate of 12% per annum (1% per month or such  lesser rate as may be the
     maximum  permissible  rate under  applicable  law) beginning on the date on
     which the  applicable  Past Due Amounts are due and payable and ending when
     paid.

                                       8



5.3  Buyer shall promptly reimburse and/or pay Seller, upon demand, or shall pay
     directly,  if so  requested  by Seller,  all taxes and charges  (including,
     without limitation, penalty and interest, imposed by any federal, state, or
     local governmental or taxing authority) relating to the purchase,  license,
     ownership,   possession,   use,   operation  or  relocation  of  Equipment,
     Merchandise,   or  Services   provided  by  Seller  under  this  Agreement,
     excluding,  however,  all taxes based upon the net income of Seller. To the
     extent  Seller is required by law to collect  such taxes,  Seller shall add
     such taxes to invoices as separately  stated charges which shall be paid by
     Buyer unless the Buyer is exempt from such taxes and furnishes  Seller with
     a certificate of exemption in a form reasonably  acceptable to Seller prior
     to issuance of such invoice.  Buyer shall hold Seller harmless from any and
     all claims  levied by a proper taxing  authority for such taxes,  including
     any interest,  penalties or late charges due to Buyer's  failure to perform
     hereunder.  If any taxes collected by Seller are  inappropriately  assessed
     against  Buyer or any such  taxes  are  charged  at the  incorrect  rate of
     taxation,  then  within  30  days  after  Seller  receives  notice  of  the
     overpayment ("Tax Credits"),  Seller shall credit Buyer's outstanding (and,
     if necessary,  future) invoices for an amount agreed upon by the parties as
     the amount of tax inappropriately  assessed or incorrectly charged, if any.
     Within 30 days after the  expiration or  termination of this Agreement (or,
     for Tax Credits arising thereafter, within 30 days after notice of such Tax
     Credits),  Seller shall pay to Buyer any Tax Credits  outstanding  upon the
     expiration or termination of this Agreement or arising  thereafter.  Notice
     of  overpayment  shall be  considered  received  by Seller  when (a) Seller
     discovers an error in the  assessment or  calculation  of taxes;  (b) Buyer
     provides  Seller with  written  notice of the tax error;  or (c) any local,
     state or federal  agency  advises  Seller of the tax  error.  The terms and
     conditions of this Section 5.3 shall survive the  expiration or termination
     of this Agreement.

5.4  Until the Price for each unit of Equipment is paid to Seller,  Seller shall
     retain and Buyer hereby grants to Seller a purchase money security interest
     in such unit of Equipment, and Buyer shall cooperate with Seller (solely at
     Seller's  cost and expense) in  perfecting  such  purchase  money  security
     interest.

5.5  Seller  reserves the right to require  reasonable  assurances of payment by
     Buyer as a condition to accepting Purchase Orders.

5.6  Prior  to  payment  in full of the  Price,  Buyer  shall  not sell or lease
     Equipment  purchased by it, or allow any liens or encumbrances to attach to
     any such Equipment, or remove such Equipment from the Installation Site (if
     applicable) provided that an Affiliate may lease such Equipment to Buyer at
     anytime without violating this Section.

5.7  In this Section,  "Receivables"  shall mean all or any portion of any right
     of Seller to  payments  from  Buyer  arising  under this  Agreement  or any
     Purchase Orders submitted pursuant to this Agreement,  together with all or
     any associated rights and remedies of Seller. Buyer hereby consents to: (i)
     the  Seller's  provision to any proposed  assignee of  Receivables  and its
     advisors,  under written obligations of confidentiality,  of a copy of this
     Agreement,  any  amendments  hereto  and any  applicable  Purchase  Orders,
     invoices  or  any  other  documentation  related  to  the  Receivables,  as
     necessary to facilitate the assignment by Seller of  Receivables;  and (ii)
     the assignment by Seller of any Receivables

                                       9


     to  any  assignee   without  further  notice.   Notwithstanding   any  such
     assignment,  Buyer shall retain (y) against any such assignee all claims in
     recoupment  and all defenses  that Buyer has arising from the  transactions
     governed by this  Agreement and (z) against  Seller all rights and defenses
     it has against Seller.

5.8  Upon Buyer's written request, Seller shall provide reasonable documentation
     substantiating  any pass-through  charges or any charges made on a time and
     materials basis.

6.   DELIVERY, RISK OF LOSS, TITLE
     -----------------------------

6.1  Delivery

     6.1.1   All  Equipment  shipped by Seller  from a  location  outside of the
             United States to Buyer's  designated  initial delivery  location in
             the  United  States  (the  "Initial  Delivery  Location")  shall be
             shipped by Seller  Delivered Duty Paid ("DDP").  Under DDP,  Seller
             shall  (a)  be  solely   responsible  for  all  customs   clearance
             formalities for export/import;  (b) select the common carrier;  and
             (c) provide for insurance and assume risk of loss until delivery of
             the Equipment to Buyer's Initial  Delivery  Location.  Seller shall
             make all applications  required under the laws of the exporting and
             importing countries (or any other applicable country) in connection
             with the  Equipment  and  related  technology  being sold and shall
             request such  authorizations  as may be required for  exporting and
             importing  such Equipment and related  technology  from and to such
             countries.  Buyer  acknowledges  that Seller  cannot  guarantee the
             issuance of any export or import  license.  Buyer shall be entitled
             to rely on Seller's  written  confirmation to Buyer that Seller has
             obtained  such  licenses.  For  Equipment  for  which  the  Initial
             Delivery  Location  is  outside  of  the  United  States,  Seller's
             obligation to ship the Equipment is subject to and conditional upon
             the issuance of any such requisite export and import licenses.

     6.1.2   Seller  shall ship all  Equipment  from  within  the United  States
             F.O.B.  Buyer's designated Initial Delivery Location.  Seller shall
             pre-pay all Freight  from the place of shipment to each  applicable
             Initial Delivery Location.  If Freight is not included in the Price
             for the  applicable  Equipment,  Seller may bill Buyer for  Freight
             (solely  on  a   pass-through   basis   without   any   mark-up  or
             administrative  charge)  by  adding  it  to  the  invoice  for  the
             applicable  Equipment.  If Freight is included in the Price for the
             applicable Equipment,  Seller shall select the method of and common
             carrier  for  shipment.  If Freight is not  included  in the Price,
             Seller shall  select the method of and common  carrier for shipment
             unless,  at least 14 days prior to the applicable Ship Date,  Buyer
             notifies  Seller  that  Buyer  desires  to select the method of and
             common carrier for shipment.  Buyer shall be solely responsible for
             arranging  and  paying for any  relocation  of  Equipment  from the
             Initial  Delivery  Location  to the  Installation  Site.  Buyer may
             request  that  Seller  quote a price to  Buyer  for  relocation  of
             Equipment from the Initial  Delivery  Location to the  Installation
             Site. If Buyer accepts such price,  Seller shall prepay the charges
             for delivery from the Initial Delivery Location to the specified

                                       10


             Installation Site, and Seller shall bill such charges to Buyer as a
             separate item on the applicable invoice.

6.2  Title and risk of loss or damage to all  Equipment  furnished  by Seller to
     Buyer in accordance  with this Agreement  shall pass to Buyer upon delivery
     of  such  Equipment  to  the  Initial  Delivery  Location.   The  foregoing
     notwithstanding, title to Software shall not pass to Buyer at any time.

6.3  Seller warrants to Buyer that title to all Equipment furnished by Seller to
     Buyer in accordance with this Agreement shall be good and clear title, free
     and clear of all liens and encumbrances.

6.4  Notwithstanding  Sections 6.1 and 6.2, for each Project,  Seller shall ship
     the Equipment to a  Seller-managed  warehouse  facility for  collection and
     consolidation.  Title and risk of loss for such  Equipment  shall pass from
     Seller to Buyer  upon  delivery  of such  Equipment  to the  Seller-managed
     warehouse  facility  which  shall  be  deemed  to be the  Initial  Delivery
     Location.  While located in a  Seller-managed  warehouse  facility,  Seller
     shall ensure that such Equipment (a) is clearly and conspicuously marked as
     belonging to Buyer;  (b) is physically  segregated from any other equipment
     or materials located in such Seller-managed  warehouse facility; and (c) is
     available for relocation by Seller upon  reasonable  notice.  In accordance
     with the Project Plan, Seller shall ship such Equipment from such warehouse
     facility to Buyer's designated Installation Site at no additional charge to
     Buyer; provided that Seller performs the Installation of such Equipment and
     no Special  Delivery  is  required.  For a period not to exceed four months
     commencing  upon the  mutually  agreed  upon start  date for each  Project,
     Seller shall provide the  Seller-managed  warehouse facility for collection
     and consolidation of the Equipment.  Accordingly,  all Equipment  initially
     shipped to the  Seller-managed  warehouse facility must be delivered to the
     applicable Installation Site during such four-month period.

6.5  Along with each delivery of Equipment by Seller,  Seller shall also deliver
     to  Buyer  in  electronic   form,  via  the  following  web  site  address,
     http://www130.nortelnetworks.com/cgi-bin/eserv/cs/main.jsp  the  applicable
     Documentation  for such  Equipment.  Buyer may make a reasonable  number of
     copies of such  Documentation  (in electronic or paper format) and, subject
     to Section 20, may use such  Documentation for purposes of installing BTSs,
     maintaining  and operating the Equipment.  Buyer may also order  additional
     copies of the  Documentation  from Seller at Seller's  then-current  price.
     Buyer shall  ensure that all copies of the  Documentation  created by Buyer
     include any copyright or similar  proprietary notices included by Seller in
     the original versions of such Documentation. Buyer shall ensure that proper
     versions of the Documentation are distributed to Buyer's  personnel.  At no
     additional  charge to Buyer,  Seller shall  provide to Buyer in  electronic
     form all updates, revisions and corrections to such Documentation.

6.6  At least 30 days  prior to the Ship Date for any unit of  Equipment,  Buyer
     may notify  Seller  that Buyer  desires to  postpone  the  delivery of such
     Equipment.  Upon  Seller's  receipt of such  notice,  Seller may place such
     Equipment in storage,  and Buyer shall be  responsible  for all  reasonable
     storage and associated costs thereby incurred by Seller.

                                       11


     Likewise, if Buyer, as of the scheduled Ship Date, has failed to adequately
     prepare the  Installation  Site for delivery of such Equipment,  Seller may
     place such  Equipment  in storage  and Buyer shall be  responsible  for all
     reasonable  storage  and  associated  costs  thereby  incurred  by  Seller.
     Seller's  delivery of such  Equipment to a storage  location as provided in
     this Section  shall  constitute  shipment of the  Equipment for purposes of
     invoicing.  In addition,  if such Equipment is in such storage location for
     more than fifteen days,  then  notwithstanding  anything to the contrary in
     Section 6.2, title and risk of loss or damage to the stored Equipment shall
     pass  from  Seller  to  Buyer  at  the  end  of  such  fifteen-day  period.
     Notwithstanding  anything to the contrary contained in Section 1.37, if any
     such  Equipment  is stored  for more  than 60 days,  then for  purposes  of
     determining  the Warranty  Period for such  Equipment,  the date that is 60
     days after  Seller's  delivery of such  Equipment  to the storage  location
     shall be deemed to be the Ship Date for such Equipment.

6.7  At least five  business days prior to Seller's  shipment of any  Equipment,
     Buyer may, upon written notice to Seller,  change the  destination for such
     Equipment to an alternative Initial Delivery Location in the United States,
     and Seller shall ship such Equipment to such  alternative  Initial Delivery
     Location.

6.8  Subject to  Sections  6.6 and 6.7,  if Seller  attempts  to timely  deliver
     Equipment to any Initial Delivery Location, and Buyer has failed to fulfill
     Buyer's  obligations  hereunder to prepare for receipt of such Equipment at
     such  Initial  Delivery  Location,  Seller  shall place such  Equipment  in
     storage,  and Buyer shall be  responsible  for all  reasonable  storage and
     associated  costs  thereby  incurred by Seller.  Seller's  delivery of such
     Equipment  to  a  storage  location  as  provided  in  this  Section  shall
     constitute  shipment of the  Equipment for purposes of (a)  invoicing,  (b)
     passage  of title and risk of loss or damage to the stored  Equipment,  and
     (c) determining the Warranty Period for such Equipment.

6.9  Order-to-Shipment Intervals

     6.9.1   To the  extent  that  Buyer has  forecasted  its  requirements  for
             Equipment in accordance  with Section 13.4 and such Equipment is of
             a standard  configuration,  Seller shall ship such Equipment within
             the intervals set forth in the following table (the "Intervals") if
             the Initial Delivery Location is within the United States:

                      Activity               Switch/BSC           BTS
             -------------------------       ----------          -----

             Receipt of P.O.                   Week 1            Week 1

             Network Design/CIQ Mtg.           Week 2            -----

             Approved CIQ/Buyer
             Network Design Approval           Week 3            -----

             JOM/Generate JCO                  Week 4            Week 2

             Buyer Floor Plan Approval         Week 5            -----


                                       12



                      Activity               Switch/BSC           BTS
             -------------------------       ----------          -----

             Finalize Specs                    Week 6-8          Week 3

             Factory Order Finalized           Week 9            Week 4

             Shipment                          Week 16           Week 12



     6.9.2   Prior to Seller's acceptance of a Purchase Order for Hardware,  the
             parties shall mutually agree upon the  order-to-shipment  intervals
             for such  Hardware if (a) the sum of (i) the units of Hardware  set
             forth in such  Purchase  Order for  shipment  during  any  Forecast
             Period,  plus  (ii) the  units of  Hardware  that  have a Ship Date
             during such Forecast  Period and are set forth in Purchase  Orders,
             if any,  previously accepted by Seller; is greater than (b) 110% of
             the Forecast for such Forecast Period.

7.   WARRANTIES,   REMEDIES  AND  LIMITATION  OF  WARRANTIES  AND  REMEDIES  AND
     ---------------------------------------------------------------------------
     DISCLAIMERS OF WARRANTIES AND LIABILITY
     ---------------------------------------

7.1  Hardware Warranty

     7.1.1   Seller  warrants  that during the  Warranty  Period,  the  Hardware
             furnished  under  this  Agreement  shall be free  from  defects  in
             material  and  workmanship,  and shall  conform  to the  applicable
             portions of the Specifications. Performance of Seller's obligations
             hereunder  for any  warranty  repair that extends more than 15 days
             shall extend the Warranty Period on a day-for-day basis thereafter.
             Any Hardware  repaired or replaced during the Warranty Period shall
             continue to be warranted  until the later of (a) the  expiration of
             the Warranty Period, or (b) the date that is 90 days after shipment
             of such repaired or replacement Hardware.

     7.1.2   Seller's sole obligation and Buyer's  exclusive remedy for Seller's
             breach  of the  warranty  set forth in  Section  7.1.1 or 7.1.3 are
             limited to the replacement or repair,  at Seller's  option,  of the
             defective component of the Hardware.  Such replacement Hardware may
             be new or  reconditioned  to perform as new,  at  Seller's  option.
             Buyer shall be  responsible  for  de-installation  of any defective
             Hardware  and   reinstallation   of  any  repaired  or  replacement
             Hardware,  as well as the risk of loss and Freight for shipping the
             defective  Hardware to Seller.  Seller  shall bear the risk of loss
             and Freight for shipping the  repaired or  replacement  Hardware to
             Buyer. Title to defective,  repaired or replacement  Hardware shall
             pass to Seller or Buyer, as appropriate,  upon such party's receipt
             thereof.

     7.1.3   Seller  represents  and  warrants  to  Buyer  that,   provided  the
             Equipment  is  operated  in  accordance  with  its   Documentation,
             Equipment  shall  comply with the FCC  standards  relating to radio
             frequency  emissions  in force as of the  date of  shipment  to the
             Initial Delivery Location.

                                       13


7.2  Services Warranty

     7.2.1   Seller  warrants  that the  Services  shall be  performed  (a) in a
             professional  and  workmanlike  manner;  (b) in accordance with all
             applicable industry  standards;  and (c) by personnel that have the
             skills,   training   and   experience   commensurate   with   their
             responsibilities in connection with performance of the Services.

     7.2.2   Seller's sole obligation and Buyer's  exclusive remedy for Seller's
             breach of this  warranty  are  limited to  Seller's  correction  or
             reperformance  of the  defective  Services.  Within  15 days  after
             written  notice from Buyer,  the parties  shall agree on a plan for
             problem   resolution   which  may   include   onsite   Services  as
             appropriate.

7.3  Software  Warranty.  Seller warrants that during the Warranty  Period,  the
     Software  shall  conform in all  material  respects  to the  Specifications
     therefor when such Software is used in the operating  environment specified
     in the  Documentation.  If the Software  fails to conform to the  foregoing
     warranty,  Buyer's exclusive remedy under this warranty shall be to require
     Seller to correct such  Software.  The correction of the Software shall not
     extend  the  Warranty  Period  of such  Software,  except in the case of E1
     Critical and E2 Major (as defined in Annex 2),  whereby such  correction of
     the  Software  takes  longer than 14 days,  the  Warranty  Period  shall be
     extended  on  a  day-for-day  basis  thereafter.  The  parties  shall  on a
     case-by-case  basis  mutually  agree on the  scope and  timing  of  problem
     resolution efforts,  consistent with Annex 2 Technical Assistance Services,
     which may include onsite Services as appropriate.

7.4  The remedies set forth in this Section with respect to the  warranties  set
     forth  above are  conditioned  upon Buyer  providing  to Seller  during the
     applicable  Warranty  Period a written  notice (or an oral notice  promptly
     followed by a written  notice) of any failure of the  applicable  Hardware,
     Software or Services.

7.5  Response Services/Time

     7.5.1   During the Warranty Period,  Seller's technical  assistance service
             department ("TAS") shall provide reasonable  assistance to Buyer in
             the  investigation  and resolution of warranty  defects that affect
             Buyer's ability to provide services to Buyer's  customers.  If such
             assistance  is  requested  by Buyer,  Buyer shall  follow  Seller's
             standard  policies and  procedures  related to such TAS services as
             set  forth in Annex 5. For  routine  warranty  service  situations,
             Seller shall ship  replacement or repaired  Hardware (or components
             thereof) within fifteen  business days following  Buyer's notice to
             Seller of such defective Hardware (or components thereof).

     7.5.2   During the Warranty Period,  if Buyer requests  emergency  warranty
             service,   Seller  shall  use  all   reasonable   efforts  to  ship
             replacement  Hardware (or components thereof) within 24 hours after
             notification  by Buyer of the warranty  defect.  Provided that such
             replacement Hardware is shipped by Buyer within 24 hours after such
             notification, Buyer shall pay to Seller the surcharge set forth in

                                       14


             Annex 5 for such expedited shipment of replacement  Hardware unless
             Buyer has (a) purchased and maintained the spares  inventory  level
             for  the  Hardware  as  set  forth  in  the  NTPs  or as  otherwise
             recommended  in writing by Seller,  provided  Seller has previously
             provided  Buyer  with a copy  of the  NTPs or  other  Documentation
             referencing  the recommended  quantity of spares;  and (b) properly
             maintained  the Hardware in accordance  with  Seller's  maintenance
             procedures as set forth in the NTPs or as otherwise  recommended in
             writing by Seller,  provided  Seller has previously  provided Buyer
             with  a  copy  of  the  NTPs  or  Documentation   referencing  such
             maintenance procedures.

     7.5.3   Except as  otherwise  provided  in Section  5.1.2  with  respect to
             Equipment  received by Buyer that has sustained  obvious or visible
             damage in transit,  Buyer shall ship  defective  Hardware to Seller
             within 60 days after Buyer's receipt of the  replacement  Hardware.
             If Buyer fails to ship such  defective  Hardware  to Seller  within
             such  60-day  period,  Seller  shall  invoice  Buyer  for the Price
             hereunder  for such  Hardware.  If  Buyer  returns  such  defective
             Hardware to Seller within 90 days after Buyer pays Seller therefor,
             Seller shall credit Buyer for the Price of the replacement Hardware
             on the next invoice.

7.6  Exclusions.  Seller's  obligations  under this Section 7 shall not apply to
     (a)  Equipment  or  components  thereof  (such as fuses and bulbs) that are
     normally  consumed in  operation or have a normal life  inherently  shorter
     than the  Warranty  Period;  (b)  defects  that are the result of  storage,
     installation,  use, maintenance or repair by Buyer other than in accordance
     with the Documentation  (including,  without  limitation,  operation of the
     Equipment   outside   the   environmental   parameters   defined   in   the
     Specifications);  (c) defects that are the result of improper  operation of
     Equipment  by Buyer with other  hardware  including  (i) the  operation  of
     Equipment  with hardware that is not supplied,  authorized,  recommended or
     required  by  Seller  for use  with  the  Equipment,  as set  forth  in the
     applicable  Specifications,  or (ii) use of Equipment  with any  improperly
     operating  equipment that was not supplied by Seller under this  Agreement;
     (d) Equipment or components  thereof that, due to no fault of Seller,  have
     been subjected to any other kind of misuse or detrimental  exposure or have
     been  involved  in an  accident,  fire,  explosion,  or any other cause not
     attributable to Seller; or (e) Equipment that has been altered,  improperly
     repaired,  improperly  installed or relocated other than by or on behalf of
     Seller.

7.7  DISCLAIMER.  THE  WARRANTIES  AND  REMEDIES  SET  FORTH  IN THIS  AGREEMENT
     CONSTITUTE THE ONLY  WARRANTIES  WITH RESPECT TO THE EQUIPMENT AND SERVICES
     PROVIDED,  AND BUYER'S  EXCLUSIVE  REMEDIES IN THE EVENT SUCH EQUIPMENT AND
     SERVICES DO NOT CONFORM WITH SUCH WARRANTIES.  SUCH WARRANTIES AND REMEDIES
     ARE IN LIEU OF ALL OTHER WARRANTIES, WRITTEN OR ORAL, STATUTORY, EXPRESS OR
     IMPLIED INCLUDING,  WITHOUT LIMITATION, THE WARRANTY OF MERCHANTABILITY AND
     THE  WARRANTY OF FITNESS FOR A PARTICULAR  PURPOSE.  SELLER  DISCLAIMS  ANY
     WARRANTY THAT THE EQUIPMENT, DOCUMENTATION,  MATERIALS, TRAINING MANUALS OR
     SERVICES  PROVIDED  UNDER THIS  AGREEMENT  WILL NOT INFRINGE ANY

                                       15


     COPYRIGHT, PATENT, TRADE SECRET OR ANY OTHER PROPRIETARY RIGHT OF ANY THIRD
     PARTY.

7.8  OEM Equipment.  OEM Equipment furnished in conjunction with a Switch (i.e.,
     terminals and printers) shall be warranted by Seller in accordance with the
     Hardware  warranty  set forth in Section  7.1 and related  warranty  claims
     shall be managed and administered by Seller.  With respect to all other OEM
     Equipment  ordered  by Buyer,  Seller  shall  ensure  that the  third-party
     vendors of such OEM  Equipment  provide  directly  to Buyer  such  vendors'
     standard warranties for such OEM Equipment;  provided, however, that Seller
     shall manage and administer Buyer's warranty claims for such OEM Equipment.
     Except for the warranty of title  provided in Section  6.3, the  warranties
     provided in this Section 7.8 are Seller's exclusive warranties with respect
     to the OEM Equipment.

7.9  The expiration or termination of this Agreement shall not relieve Seller of
     its obligations under this Section 7.

8.   FORCE MAJEURE
     -------------

8.1  Neither party shall be deemed in default of this  Agreement or any Purchase
     Order  placed  hereunder  to the  extent  that any delay or  failure in the
     performance of its  obligations is directly  caused by or directly  results
     from any  cause  beyond  its  reasonable  control  (or the  control  of its
     employees,  agents or  subcontractors)  and without its fault or negligence
     (or the fault or negligence  of its  employees,  agents or  subcontractors)
     including,  without  limitation,  acts of God,  acts of civil  or  military
     authority  (including  legislative,  judicial,  or  administrative  acts or
     decisions),    labor   strikes,   embargoes,    epidemics,   wars,   riots,
     insurrections,  fires, explosions,  earthquakes, floods or unusually severe
     weather conditions (each, a "Force Majeure Condition");  provided, however,
     that a party's inability to obtain necessary materials or services from its
     suppliers  or  subcontractors  shall not be  deemed  to be a Force  Majeure
     Condition  unless such  suppliers or  subcontractors  are unable to provide
     such materials or services due to a Force Majeure Condition  affecting such
     suppliers  or  subcontractors  or such  materials  or services are in short
     supply and availability of such materials or services is sharply  curtailed
     on a world-wide basis. If a Force Majeure  Condition  occurs,  the affected
     party shall  immediately  notify the other  party.  Subject to Section 8.2,
     each party shall provide reasonable  assistance the other party to mitigate
     the adverse affects of any Force Majeure Condition.

8.2  If a Force Majeure Condition occurs,  the unaffected party may elect (a) to
     suspend  performance  under any affected Purchase Order for the duration of
     the Force Majeure Condition;  (b) to buy third-party  products and services
     similar to the Equipment and Services  ordered under the affected  Purchase
     Order;  (c) to sell to a  third-party  customer the  Equipment and Services
     ordered under the affected  Purchase Order; (d) to deduct from any Purchase
     Order the Equipment  and Services  bought,  sold or otherwise  committed to
     elsewhere (and to reduce the applicable Cumulative Annual Volume Commitment
     and  the  Aggregate  Volume  Commitment  accordingly);  and  (e) to  resume
     performance  under such  Purchase  Order when the Force  Majeure  Condition
     ceases.

                                       16


8.3  If a Force Majeure Condition continues for a period of 30 days or more, the
     unaffected  party may, upon written notice to the affected  party,  rescind
     acceptance of or cancel the affected  Purchase  Order or part thereof which
     may be affected by the Force Majeure  Condition and if the unaffected party
     is the Buyer, reduce the applicable Cumulative Annual Volume Commitment and
     the Aggregate Volume Commitment accordingly.

8.4  Upon the  cessation  of a Force  Majeure  Condition,  Seller  shall  resume
     performance  hereunder  pursuant  to the  affected  Purchase  Order if such
     Purchase Order has not been cancelled.

9.   PATENT OR COPYRIGHT INFRINGEMENTS
     ---------------------------------

9.1  Seller shall indemnify Buyer with respect to any suit, claim, or proceeding
     brought by a third party  against  Buyer  alleging  that Buyer's use of the
     Equipment,  Documentation,  Materials or Training  Manuals  constitutes  an
     infringement  of any United States patent or copyright or  misappropriation
     of any trade secret.  Seller shall defend Buyer against any such claims and
     shall pay all litigation  costs,  reasonable  attorneys'  fees,  settlement
     payments and any damages  awarded in any final  judgment  arising from such
     suit,  claim or proceeding;  provided,  however,  that Buyer shall promptly
     advise Seller of any such suit,  claim,  or proceeding and shall  cooperate
     with Seller, at Seller's cost and expense,  in the defense or settlement of
     such suit, claim or proceeding; and further provided that Seller shall have
     sole control of the defense of such suit, claim or proceeding.

9.2  If an  injunction  is  obtained  by a third  party  against  Buyer's use of
     Equipment,  Documentation,  Materials or Training  Manuals arising from any
     such patent or  copyright  infringement  or trade  secret  misappropriation
     suit,  claim or  proceeding,  in whole or in  part,  Seller  shall,  at its
     option,  either:  (a)  procure  for Buyer the right to  continue  using the
     portion of the Equipment, Documentation,  Materials or Training Manuals the
     use of which has been  enjoined;  or (b) replace or modify such  portion of
     the Equipment, Documentation, Materials or Training Manuals so that Buyer's
     use is not subject to such injunction.

9.3  Buyer  shall  return to Seller  the  applicable  Equipment,  Documentation,
     Materials or Training Manuals (or portion thereof), and neither party shall
     have any  further  liabilities  or  obligations  under  this  Agreement  in
     connection  with such  patent or  copyright  infringement  or trade  secret
     misappropriation  suit, claim or proceeding  except as provided in Sections
     9.3.1 and 9.3.2 if: (a) Seller  notifies  Buyer that Seller cannot  perform
     under  Section  9.2  in  connection  with  such  Equipment,  Documentation,
     Materials or Training  Manuals;  or (b) if Seller notifies Buyer in writing
     that Seller  reasonably  believes that an injunction may issue with respect
     to such  Equipment,  Documentation,  Materials  or Training  Manuals.  Upon
     Seller's  receipt of such Equipment,  Documentation,  Materials or Training
     Manuals,  Seller  shall  refund to Buyer the amounts  specified  in Section
     9.3.1 or 9.3.2 as the case may be.

     9.3.1   If  Buyer  returns  such  Equipment,  Documentation,  Materials  or
             Training  Manuals (or portion  thereof)  during the two-year period
             commencing  on the date that Buyer  purchased  same,  Seller  shall
             refund to Buyer an amount equal to the Price

                                       17



             paid by  Buyer  for such  Equipment,  Documentation,  Materials  or
             Training Manuals (or portion thereof).

     9.3.2   If  Buyer  returns  such  Equipment,  Documentation,  Materials  or
             Training  Manuals  (or portion  thereof)  more than two years after
             Buyer purchased same,  Seller shall refund to Buyer an amount equal
             to  the   then-current   depreciated   value  of  such   Equipment,
             Documentation,  Materials or Training  Manuals (or portion thereof)
             calculated  using  straight-line  depreciation  over an  eight-year
             period  commencing  two years  after the date that Buyer  purchased
             such Equipment, Documentation, Materials or Training Manuals.

9.4  If a suit,  claim or  proceeding  is brought by a third party against Buyer
     alleging that the use of OEM Equipment purchased  hereunder  constitutes an
     infringement  of any United States patent or copyright or  misappropriation
     of any trade secret,  Seller shall  indemnify Buyer with respect to a claim
     of infringement arising in connection with Buyer's "stand-alone" use of the
     item of OEM  Equipment  (i.e.,  claims other than claims  involving  use in
     conjunction or combination  with Seller's  Equipment) to the same extent as
     Seller is indemnified by the vendor of such OEM Equipment,  and Seller will
     either (a) assign to Buyer such  indemnification  rights as Seller has from
     the  vendor  of  such  OEM  Equipment  to the  extent  such  assignment  is
     permitted, or (b) provide to Buyer full rights of indemnification as though
     Buyer  were a  third-party  beneficiary  of  such  rights.  If a  claim  of
     infringement  or  misappropriation  is  based  upon  the  use of  such  OEM
     Equipment in combination with Seller's Equipment, Documentation,  Materials
     or Training  Manuals,  Seller shall  indemnify Buyer therefor in accordance
     with Section 9.1. In any such event,  Seller shall  provide  Buyer with the
     remedies set forth in Sections 9.2 and 9.3.

9.5  Seller's  indemnity  obligations  under  Section  9.1  shall  not  apply to
     infringement or misappropriation claims (a) arising from any portion of the
     Equipment,   Documentation,   Materials   or  Training   Manuals   that  is
     manufactured using Buyer's design,  where such claims would not have arisen
     but  for  the  use of  Buyer's  design;  (b)  arising  from  the use of the
     Equipment, Documentation, Materials or Training Manuals in combination with
     any other  apparatus  or  material  not  supplied or required by Seller (or
     otherwise  required  generally  for use of such  Equipment,  Documentation,
     Materials  or Training  Manuals as intended  and there are no  alternatives
     that do not  infringe  or  misappropriate)  to the extent  that such claims
     arise from such  combination  usage;  or (c)  alleging  that  method of use
     claims in a patent are infringed by any service  offering and/or by any use
     by  Buyer  of  Equipment,  Documentation,  Materials  or  Training  Manuals
     furnished hereunder to make such service offering  available.  For purposes
     of clause (a),  Equipment,  Documentation,  Materials and Training  Manuals
     that are manufactured in accordance with Buyer's choice of  Seller-provided
     options and features shall not be deemed to have been  "manufactured  using
     Buyer's design."

9.6  The foregoing  states the entire liability of Seller to Buyer for patent or
     copyright infringement or trade secret  misappropriation in connection with
     the Equipment, Documentation, Materials or Training Manuals.

                                       18



9.7  The rights  and  obligations  of the  parties  under  this  Section 9 shall
     survive the expiration or termination of this Agreement.

10.  SOFTWARE LICENSE
     ----------------

10.1 With respect to all Software  associated  with and integral to the Hardware
     purchased by Buyer  hereunder,  Seller hereby  grants Buyer a  nonexclusive
     license  to use the  Software  with  the  Equipment  to the  extent  of the
     activation or authorized usage level (including, without limitation, radios
     (voice   channels),   effective  voice  channels  (EVC),   BSCs,  BTSs,  or
     subscribers).  To the extent  Software is furnished for use with designated
     Equipment or  Buyer-furnished  equipment  ("CFE"),  Seller hereby grants to
     Buyer a nonexclusive license to use such Software only on such Equipment or
     CFE, as  applicable.  Seller  represents  that the Software  contains trade
     secrets.   Accordingly,   Buyer  shall  treat  the   Software  as  Seller's
     Confidential Information (as defined in Section 20). Buyer will ensure that
     anyone  authorized  by Buyer to use the Software  shall do so in compliance
     with the terms of this Agreement.

     10.1.1  If Buyer has not chosen the MTX Software Release buy-out option (as
             described in Section 4 of Supplement 1), then upon Buyer's request,
             Seller  shall  provide  to  Buyer a list of  Seller's  then-current
             Optional Features. If Seller notifies Buyer in writing of the Price
             of a particular  Optional  Feature at any time during the Term, the
             Price of such  Optional  Feature  shall  not be  increased  for the
             remainder of the Term.

     10.1.2  If Buyer  chooses to obtain a license  from  Seller for  additional
             Optional Features and/ or additional  measurable units as described
             above,  Seller  may  audit  Buyer's  Systems  (either  remotely  or
             visually or some combination  thereof) to verify Buyer's compliance
             with the licensed unit quantities. Seller may conduct such an audit
             of Buyer's  Systems  (solely at Seller's cost and expense) upon any
             such  activation  to determine  the initial  quantity of measurable
             units.  On a quarterly  basis during each calendar year of the Term
             thereafter,  Seller  shall have the right to audit  Buyer's  System
             (solely  at  Seller's  cost and  expense)  as set  forth  herein to
             determine  the  quantity  of  measurable  units  utilized by Buyer;
             provided that Seller shall (a) notify Buyer in writing at least ten
             days prior to  commencing  any such audit,  (b) perform such audits
             during Buyer's normal  business  hours,  and (c) avoid  interfering
             with or  disrupting  Buyer's  day-to-day  operations.  Buyer  shall
             provide reasonable cooperation with such audits.  Seller's right to
             audit and invoice Buyer in accordance  with this Section 10.1.2 for
             measurable  units added  following the expiration or termination of
             this  Agreement  shall survive for a period of two years  following
             the expiration or termination of this Agreement.

10.2 Buyer shall not: (a) use, copy, modify, transfer or distribute the Software
     except  as  provided  in  the  Documentation  or  as  expressly  authorized
     hereunder;  (b) reverse  assemble,  reverse  compile,  reverse  engineer or
     otherwise  translate  the  Software;  (c)  create  derivative  works of the
     Software or modify the Software except as provided in the  Documentation or
     as expressly  authorized  hereunder;  or (d) sublicense,  rent or lease

                                       19



     the  Software,  provided that an Affiliate may lease such Software to Buyer
     at anytime without violating this Section.

10.3 Buyer  acknowledges  that  the  Software  includes   intellectual  property
     licensed to Seller by third parties.  Such  third-party  licensors shall be
     deemed to be beneficiaries  of this provision.  With respect to third-party
     Software, Buyer shall comply with the license terms and conditions provided
     by Seller in writing with respect to any such Software provided that Seller
     has given Buyer a  reasonable  opportunity  to review and evaluate any such
     terms and conditions. Buyer shall also comply with the terms and conditions
     contained in any Seller or  third-party  "shrink wrap" or "click"  licenses
     that are provided  prior to the use of the Software.  None of the terms and
     conditions  of such  third-party  licenses or any Seller  "shrink  wrap" or
     "click"  license  shall  affect  the length of the  Warranty  Period or the
     rights of Buyer related to the use of the Software.

10.4 The rights  and  obligations  of the  parties  under this  Section 10 shall
     survive the expiration or termination of this Agreement.

11.  SOFTWARE UPDATES
     ----------------

11.1 If Buyer  chooses to obtain a license  from  Seller for a Software  Release
     that requires an upgrade of more than two  consecutive  Software  Releases,
     charges for  additional  Services in addition to the Price of such Software
     Release  as set forth in  Section  4.3.4 of  Supplement  1 may  apply.  For
     example,  an upgrade from MTX10 to MTX13 would not result in any additional
     Service charges,  while an upgrade from MTX09 (or a prior release) to MTX13
     may result in additional Service charges which shall be quoted by Seller on
     a  case-by-case  basis and must be accepted by Buyer prior to such upgrade.
     Additionally,  future  Hardware  purchases  may  require  the  support of a
     then-current Software Release.

11.2 Any such Software  Release may require the purchase of additional  Hardware
     by Buyer.

12.  REMEDIES
     --------

12.1 Insolvency

     12.1.1  Seller may suspend its performance  under this Agreement by written
             notice to the Buyer and forthwith remove and take possession of any
             portion  of the  Equipment  that has been  delivered  if the Buyer,
             prior to payment to Seller of the Price,  shall become insolvent or
             bankrupt,  make a general  assignment  for the benefit of, or enter
             into any  arrangement  with  creditors,  file a voluntary  petition
             under  any  bankruptcy,   insolvency,   or  similar  law,  or  have
             proceedings under any such laws or proceedings  seeking appointment
             of a receiver,  trustee or liquidator  instituted  against it which
             are not terminated within 30 days after commencement thereof.

     12.1.2  Subject to the parties rights and obligations set forth in Annex 8,
             if  Seller  shall  become  insolvent  or  bankrupt,  make a general
             assignment for the benefit of, or enter into any  arrangement  with
             creditors,   file  a  voluntary   petition  under  any  bankruptcy,
             insolvency, or similar law, or have proceedings under any such laws

                                       20


             or  proceedings  seeking  appointment  of a  receiver,  trustee  or
             liquidator instituted against it which are not terminated within 30
             days  after  commencement  thereof,  then  upon  written  notice to
             Seller,  Buyer may (a) suspend its performance under this Agreement
             with respect to any Purchase  Orders or portions  thereof that have
             not been fulfilled or completed,  (b) terminate Buyer's obligations
             with respect to the Cumulative  Annual Volume  Commitments  and the
             Aggregate Volume Commitment, or (c) terminate this Agreement in its
             entirety.  If Buyer  chooses to  terminate  the  Cumulative  Annual
             Volume Commitments and the Aggregate Volume Commitment, as detailed
             above,  the Prices shall no longer apply to the  Equipment  and the
             parties shall renegotiate the prices applicable to the Equipment.

12.2 If either party materially breaches this Agreement and such material breach
     continues  for a period of 30 or more  days  after  written  notice of such
     breach  (including  a reasonably  detailed  statement of the nature of such
     breach) from the aggrieved party to the breaching party:

     12.2.1  the  aggrieved  party  may  suspend  its  performance   under  this
             Agreement for so long as the breach continues uncorrected, provided
             that  such  party  shall  continue  to comply  with the  applicable
             provisions  of Sections 10 and 20  relating  to  protection  of the
             Software and Confidential Information; or

     12.2.2  the  aggrieved  party may  terminate  this  Agreement  upon written
             notice to the other  party upon the  expiration  of the 30-day cure
             period if the breaching  party has not cured such material  breach;
             and

     12.2.3  the  aggrieved  party  may  avail  itself  of any and all  remedies
             available at law or equity  whether or not it elects to suspend its
             performance  or terminate  this  Agreement  under Section 12.2.1 or
             12.2.2, as applicable.

12.3 NOTWITHSTANDING  ANYTHING  TO THE  CONTRARY  CONTAINED  IN THIS  AGREEMENT,
     EXCEPT  IN THE CASE OF A BREACH BY EITHER  PARTY OF ITS  OBLIGATIONS  UNDER
     SECTION 19 (RELEASE OF INFORMATION) OR SECTION 20  (CONFIDENTIALITY),  OR A
     BREACH BY BUYER OF ITS  OBLIGATIONS  UNDER  SECTION 10 (SOFTWARE  LICENSE),
     NEITHER PARTY SHALL BE LIABLE TO THE OTHER PARTY FOR INCIDENTAL,  INDIRECT,
     CONSEQUENTIAL,  OR SPECIAL  DAMAGES OF ANY NATURE  WHATSOEVER IN CONNECTION
     WITH ANY ACTION ARISING OUT OF OR RESULTING FROM THIS AGREEMENT.

12.4 Any action for breach of this  Agreement or to enforce any right  hereunder
     shall be commenced  within four years after the cause of action  accrues or
     it shall be deemed  waived and barred.  For the  purposes  of this  Section
     12.4,  a cause of action  shall be deemed to have  accrued when a party has
     knowledge  of the facts  giving  rise to such  cause of  action  or, in the
     exercise of reasonable diligence, should have been aware of such facts.

                                       21


12.5 The following  Sections shall survive any termination or expiration of this
     Agreement: Buyer's Affiliate guarantee set forth in Section 2.3; Section 5,
     Payment;  Section 7 Warranties,  Remedies and  Limitation of Warranties and
     Remedies and Disclaimers of Warranties and Liability;  Section 9, Patent or
     Copyright  Infringements;  Section 10,  Software  License;;  Section  12.3;
     Section   12.4;   Section   19,   Release  of   Information;   Section  20,
     Confidentiality;   Section  23,  Long  Term  Support;   and  Section  24.3.
     Additionally,  the obligations of the parties under this Agreement  related
     to any accepted  Purchase Order shall survive  termination or expiration of
     this  Agreement,  except that, if this  Agreement is terminated  for breach
     pursuant to Section 12.2, the  nonbreaching  party shall have the option of
     terminating  any unfilled  Purchase  Orders.  The rights and obligations of
     Buyer and Seller under this Agreement  which by their nature would continue
     beyond the termination or expiration of this Agreement,  shall survive such
     termination or expiration.

13.  BUYER'S RESPONSIBILITIES
     ------------------------

13.1 Subject to Section 11(g) of Supplement  1, Buyer shall  purchase  Equipment
     and  Services  in an amount  equal to or  exceeding  the  Aggregate  Volume
     Commitment during the Term.

13.2 With respect to each Installation, Buyer shall perform its responsibilities
     as set forth in Annex 3 and the following:

     13.2.1  Buyer  shall  prepare the  Installation  Sites in  accordance  with
             Seller's requirements for the Equipment as further set forth herein
             and in Annex 3 sufficiently  in advance to avoid delaying  Seller's
             performance hereunder.

     13.2.2  Buyer, at its expense, shall obtain all necessary local and federal
             government  permits  applicable  to a  cellular  telecommunications
             system installation and operation (excluding any applicable permits
             required  in  the  normal  course  of  Seller's  business).   Buyer
             acknowledges   that  all   site   engineering   (including   BTSs),
             architectural  work,  civil  work  and  supervision  thereof,  site
             selection  engineering,   propagation  engineering,   environmental
             approvals and rights-of-way are the responsibility of Buyer.

13.3 Buyer  shall  ensure  that only  qualified  technicians  perform  Equipment
     maintenance and repair during the Warranty Period, and such maintenance and
     repair  shall be limited to routine  tasks  performed  in  accordance  with
     written specifications therefor provided by Seller.

13.4 Beginning  as of the  Effective  Date  and on  each  January  1 and  July 1
     thereafter  during the Term,  Buyer  shall  provide  Seller with a forecast
     reflecting  Buyer's good faith  estimate of Buyer's  anticipated  Equipment
     purchases  and related  times for delivery  thereof  during the  succeeding
     twelve-month  period.  The second  six-month  period in each such  forecast
     shall be deemed to be the "Forecast  Period" to which such "Forecast" shall
     apply.

                                       22


14.  TESTING, TURNOVER AND ACCEPTANCE
     --------------------------------

14.1 On  completion  of  Installation,  Seller shall provide Buyer five (5) days
     prior written  notification that such Equipment is ready for Commissioning.
     Following  such  notification,  Buyer  may  elect to have a  representative
     present to witness and acknowledge completion of such testing;  however, if
     Buyer does not provide a qualified  representative to observe such testing,
     such election shall not invalidate the test results nor shall such election
     be a reason or valid  basis for Buyer not to accept the  Equipment.  Seller
     shall test the Equipment in accordance with its standard testing procedures
     to determine Equipment conformity with the Standards and Specifications set
     forth in the Documentation ("Acceptance Criteria"), as amended from time to
     time.  Seller  shall  notify  Buyer  reasonably  in  advance  of the  first
     scheduled Commissioning utilizing such amended Acceptance Criteria.

14.2 On the date that such Commissioning has been successfully completed, Seller
     shall  turn  the  Equipment  over to  Buyer  ("Turnover").  On the  date of
     Turnover  ("Turnover  Date"),  Buyer shall  complete and return to Seller a
     "Turnover Notice" as described in Annex 4.

14.3 For purposes of this  Agreement,  the  occurrence  of any of the  following
     shall be deemed to constitute "Acceptance" of the Equipment:

     14.3.1  Within fifteen days following the Turnover Date, Buyer shall either
             accept  the   Equipment  in  writing  by  returning  to  Seller  an
             "Acceptance  Notice" as provided in Annex 4, or Buyer shall  notify
             Seller in writing specifying in reasonable detail those particulars
             in which the Equipment does not meet the Acceptance Criteria.  With
             respect to any such  particulars,  Seller shall promptly proceed to
             take corrective action, and following correction thereof to Buyer's
             reasonable  satisfaction,  Buyer  shall  accept  the  Equipment  in
             writing.

     14.3.2  The failure of Buyer to notify Seller within fifteen days the after
             Turnover  Date  (or,  in  the  case  of  correction,  fifteen  days
             following  such   correction)  of  any  particulars  in  which  the
             Equipment  does  not meet the  Acceptance  Criteria,  or the use by
             Buyer of the Equipment or any portion thereof in  revenue-producing
             service at any time, shall be deemed to constitute Acceptance.

14.4 Notwithstanding  the  foregoing,  Buyer will be deemed to have accepted the
     Equipment,  without  limitation or restriction other than that set forth in
     Section  14.6.2,  by no later than the date such  Equipment  is placed into
     revenue-generating service.

14.5 Buyer shall be deemed to have accepted Services  purchased  separately from
     Equipment upon  completion of such Services or upon specific  milestones as
     may be identified in the applicable Project Schedule.

14.6 Buyer  shall not  unreasonably  withhold  acceptance  of any  Equipment  or
     Service and acceptance shall not be withheld or postponed due to:


     14.6.1  deficiencies or  nonconformities of Equipment or Services resulting
             from  causes  not   attributable  to  Seller   including,   without
             limitation (a) a material change in or

                                       23


             inaccuracy of information  provided by Buyer,  (b)  inadequacies or
             deficiencies  of any materials,  facilities,  or services  provided
             directly or indirectly by Buyer, or (c) other  conditions  external
             to the Equipment or Services  that are beyond the limits  specified
             in the Specifications; or

     14.6.2  deficiencies or shortages with respect to the Equipment or Services
             that are  attributable  to Seller but are of a nature that does not
             prevent   operation  of  the   Equipment  in  a  live,   commercial
             environment  ("Punch List  Items")  provided  that  Seller,  at its
             expense,  shall  correct  such Punch List Items  within 30 days (or
             other  mutually  agreed upon time period)  after Buyer has Accepted
             such Equipment or Services.

14.7 Acceptance of Equipment  for which  Installation  is not provided  shall be
     deemed to occur upon receipt and inspection by Buyer.

15.  COVERAGE, INTERFERENCE AND THIRD-PARTY FACILITIES
     -------------------------------------------------

15.1 Seller shall have no liability as a result of non-performance,  failures or
     poor performance of the System caused by, resulting from or attributable to
     Buyer-provided   designs,   specifications   or   equipment   configuration
     requirements,  provided,  however  that Seller shall advise Buyer if Seller
     has  reason to  believe  such  Buyer-provided  designs,  specifications  or
     equipment  configurations  will not  allow  the  Equipment  to  operate  in
     accordance with the  Specifications.  However,  in no event shall Seller be
     obligated to review Buyer's designs,  specification(s),  or  configurations
     except in the event Buyer has purchased  Seller's Services for such review.
     Buyer's  choice of  Seller-provided  options and features for the Equipment
     shall not constitute  Buyer-provided  designs,  specifications or equipment
     configuration requirements.

15.2 Seller  shall  not be  responsible  for any  failures  or  inadequacies  of
     performance  resulting  from equipment not supplied and installed by Seller
     or Seller's agents or  subcontractors  pursuant to this  Agreement.  Seller
     shall not be responsible  for  interference or disruption of service caused
     by operation of other radio  systems,  lightning,  motor  ignition or other
     similar  interference.  In the event Buyer utilizes  facilities or services
     supplied by others  such as common  carrier  circuits,  antennas or towers,
     Buyer shall have the total  responsibility for the availability or adequacy
     of such services or facilities.

16.  REGULATORY COMPLIANCE
     ---------------------

16.1 Seller shall install Equipment so that it complies in all material respects
     with all federal,  state,  and local laws and  regulations  in force on the
     Effective Date, which directly impose  obligations  upon the  manufacturer,
     seller, or installer thereof.

16.2 The  Prices  set forth for the  Equipment  are  based on  Seller's  design,
     manufacture,  and delivery of the Equipment pursuant to its design criteria
     and manufacturing processes and procedures in effect on the Effective Date.
     If, as a result of the imposition of requirements by any federal,  state or
     local  government  during  the Term  there is a  change  in such  criteria,
     processes  or procedure  or any change in the  Equipment,  Buyer and Seller
     shall  conduct good faith  negotiations  in order to establish an equitable
     adjustment  in the

                                       24



     Prices,  to reflect the added cost and expense of such change. In the event
     Buyer and Seller do not reach agreement on such equitable adjustment, Buyer
     may cancel any Purchase  Order(s) (or portion  thereof)  with regard to the
     affected  Equipment.  In the event  Buyer  cancels any  Purchase  Orders as
     contemplated  in the  preceding  sentence,  Buyer and Seller shall  conduct
     further good faith  negotiations  relating to a reduction in the applicable
     Cumulative  Annual Volume  Commitment and the Aggregate Volume  Commitment,
     considering   the  scope  and   impact  of  the   change  in   governmental
     requirements.

17.  CHANGES
     -------

17.1 Up to ninety (90) days prior to the scheduled Ship Date (or such later time
     as is acceptable to Seller),  Buyer may request  Equipment  addition(s)  or
     deletion(s) to an original  Equipment  configuration.  At any time prior to
     the start of  Commissioning,  Buyer may request  changes to the  applicable
     Project Schedule or Statement of Work. All such Equipment  reconfigurations
     or changes to Annex 3 or the Project Schedule  ("Changes") shall be subject
     to prior written approval of Seller.

17.2 Except as provided in Section  17.3,  all Changes  shall be documented in a
     written change order ("Change Order"), which shall be executed by Buyer and
     returned to Seller prior to  implementation of the requested  Changes.  The
     Change Order shall detail any adjustments to the Price,  Statement of Work,
     or Project  Schedule  required by Seller for any aspect of its  performance
     under this Agreement.

17.3 Upon  written  request  of Buyer for a Change to a  Statement  of Work that
     entails  additional  services totaling  $10,000,  or less, and upon written
     acceptance  thereof  by  Seller,  Seller  will  proceed  in good  faith  to
     implement such Change prior to receipt of an executed Change Order.  Within
     ten (10) business days following Buyer's written request, the parties shall
     agree  upon an  appropriate  price for such  Changes,  all of which will be
     summarized  in a  subsequent  Change  Order and  executed by an  authorized
     representative  of Buyer within fifteen (15) days following the date of the
     request for Change.

17.4 Calculations for the price of any Equipment  reconfigurations  prior to the
     Ship Date shall be based on Prices set forth in Supplement 1, provided that
     (i) any additions shall include any necessary engineering, Installation and
     testing charges and (ii) any deletions shall include applicable  discounts;
     and, provided further,  that the net cumulative amount of Changes shall not
     reduce the Price of a Purchase Order by more than ten percent (10%).

17.5 Buyer may elect to  cancel,  upon  prior  written  notification  to Seller,
     Purchase Orders prior to shipment of Equipment subject to the following:

     17.5.1  Without  charge,  Buyer may cancel any Purchase Order no later than
             ninety  (90) days prior to the  earliest  scheduled  Ship Date.  If
             Buyer cancels a Purchase  Order less than ninety (90) days prior to
             the earliest  scheduled  Ship Date,  Buyer agrees to pay Seller its
             standard  restocking  fees set forth in Section 1.8 of Supplement 1
             incurred as a result of such  cancellation,  provided Seller is not
             able to reasonably

                                       25


             reallocate the canceled Equipment to Buyer's  outstanding  Purchase
             Orders, if any, or to Seller's other customers.

     17.5.2  Buyer may not cancel a Purchase Order after the Ship Date.

18.  CONDITION OF INSTALLATION SITE(S)
     ---------------------------------

     Buyer warrants that to the best of its knowledge,  the Installation Site is
     free from friable asbestos or other hazardous  contamination.  In the event
     that such  contamination is found to be present at the  Installation  Site,
     Seller  shall be relieved of all of its  obligations  hereunder  until such
     contamination  is  removed.  In the event  that  Buyer  fails or refuses to
     remove  such  contamination,  Seller  shall  have the right to  remove  the
     Equipment  or  portions  thereof  if already  delivered  and  relocate  the
     Equipment to an alternate  site  provided by Buyer and charge Buyer for (i)
     any additional  delivery  charges to the new  Installation  Site,  (ii) all
     materials  expended  at the site  including  cabling,  permanently  affixed
     equipment,  and those  items  which  cannot  reasonably  be removed for use
     elsewhere,  (iii)  specifically  ordered items requested by Buyer, and (iv)
     all labor and materials  expended at the sites  relating to the  relocation
     using Seller's  then-current rates. If Seller contaminates the Installation
     Site, Seller shall promptly arrange to remove such contamination at no cost
     to  Buyer.  If the  removal  of such  contamination  by Seller  delays  the
     Turnover  Date  beyond the  scheduled  Turnover  Date stated in the Project
     Schedule,  Buyer shall be entitled to Late Fees in accordance  with Section
     11 of Supplement 1.

19.  RELEASE OF INFORMATION
     ----------------------

19.1 Unless  required by law, or as otherwise  permitted  under this  Agreement,
     Buyer and Seller  agree  that the terms and  conditions  of this  Agreement
     shall not be disclosed to any other party without the prior written consent
     of the other, except as set forth herein.  Without the consent of the other
     party and on a need-to-know  basis,  (a) Seller may release  information to
     Nortel Networks Corporation,  its research and development  affiliates,  or
     any  majority-owned  subsidiaries of any such company ("Seller  Affiliate")
     and (b), Buyer may release information to its Affiliates. Seller Affiliates
     and  Affiliates  who receive any such  information  shall be  obligated  to
     maintain the  confidentiality  of the  information  in accordance  with the
     terms  set  forth  in this  Agreement;  failure  to do so shall  result  in
     liability on the part of Buyer or Seller, as applicable.

19.2 Neither  Buyer nor  Seller  shall  publish  or use any  advertising,  sales
     promotion,  press releases or publicity  matters relating to this Agreement
     without the prior written approval of the other.

20.  CONFIDENTIALITY
     ---------------

     Buyer,  Seller and Seller  Affiliates shall receive in confidence from each
     other all technical  information,  business information,  documentation and
     expertise  which  is  either  (i)  stamped  or  otherwise  marked  as being
     confidential or proprietary  whether in written or electronic form, or (ii)
     if delivered in oral form,  is summarized  in a written  memorandum  within
     thirty (30) days thereafter and listed as being confidential ("Confidential
     Information").  Confidential  Information  shall be deemed to  include  any

                                       26


     nonpublic  information that is reasonably understood by the receiving party
     to be  proprietary  and  confidential  to the  disclosing  party because of
     proprietary  legends or other  markings,  the  circumstances  of disclosure
     thereof, or the nature of the information itself. Neither Buyer, Seller nor
     any Seller Affiliate shall,  except as previously  authorized in writing by
     the  other  party,  publish,  disclose  or  make  use of  the  Confidential
     Information (except as required by law and after notice to the other party)
     for any purpose other than in the performance of its obligations under this
     Agreement,  unless and until the Confidential Information shall have ceased
     to be proprietary  as evidenced by general  public  knowledge or shall have
     been legally acquired by such party from a third party without  obligations
     of confidentiality. This prohibition against disclosure, publication or use
     of  Confidential  Information  shall not  restrict  either  party's  use of
     information  known to it prior to  disclosure  hereunder or either  party's
     development  of similar  information  in the exercise of its own  technical
     skill, so long as such other information is independently developed by such
     party without making use of Confidential Information.

21.  INTERCONNECTION TO SWITCH
     -------------------------

21.1 Buyer is  given  the  option  to  purchase  individual  units of  Equipment
     hereunder,  and Buyer  understands  that such units of Equipment  purchased
     hereunder  do  not  necessarily  provide  Buyer  with a  complete  cellular
     telecommunications network. In some cases, Buyer may intend to interconnect
     the  Equipment  to  a  Switch  which  Switch,   and  the   facilities   for
     interconnection,  may not be included  in Buyer's  Purchase  Order.  In the
     event that Buyer  interconnects  such Equipment to a Switch not a part of a
     complete System purchase  (hereinafter "Host Switch"), it is understood and
     agreed  that the  making  and  maintaining  of all  necessary  arrangements
     (whether  commercial,  legal or otherwise) with the supplier of such Switch
     including not only arrangements  necessary to permit the timely performance
     by Seller of its responsibilities under this Agreement, (e.g., physical and
     remote  dial-up  access to the Host Switch for  installation  and  services
     purposes), but also any arrangements necessary for the ongoing operation of
     the  Equipment in  conjunction  with the Host  Switch,  shall be solely the
     responsibility  of Buyer,  and failure by Buyer to timely make or maintain,
     any  necessary  arrangements  shall not excuse  Buyer from its  obligations
     under this Agreement.

21.2 Buyer  acknowledges  and agrees that the proper  operation of the Equipment
     and/or the  availability  of certain  Optional  Features is dependent  upon
     having the appropriate Software Release operating on the Host Switch.

22.  EQUIPMENT CHANGES
     -----------------

22.1 With respect to any Equipment  ordered by or delivered to Buyer  hereunder,
     Seller reserves the right to make changes in such Equipment (in whole or in
     part) or in the related Specifications or Documentation in effect as of the
     date of shipment by Seller to the Initial Delivery Location;  provided that
     (a) Seller shall provide  written notice thereof to Buyer a reasonable time
     following  receipt of Buyer's  Purchase Order for  additional  units of any
     such Equipment;  and (b) such changes will not limit,  reduce, or adversely
     affect  performance,  functionality  or  compatibility  of the Equipment as
     previously

                                       27


     published by Seller in the  originally  applicable  Specifications.  Seller
     shall not be  obligated  to make any such  changes in  Equipment  delivered
     prior to implementation of such changes.

22.2 If any  such  changes  limit,  reduce,  or  adversely  affect  performance,
     functionality or compatibility of the Equipment, and Seller fails to remedy
     same within 90 days after notice thereof,  then  notwithstanding  any other
     remedies  available  under this  Agreement,  Seller's  failure to provide a
     remedy  hereunder  shall be deemed a material  breach of this  Agreement in
     accordance with Section 12.2.

23.  LONG TERM SUPPORT
     -----------------

23.1 For the 7-year period  commencing as of the MD Date, as defined  below,  of
     the applicable Hardware or as mutually agreed upon by the parties ("Support
     Term")  Seller  shall  make  available  for sale to  Buyer at  then-current
     prices,  terms and conditions (unless such prices, terms and conditions are
     superseded by prevailing contractual provisions (e.g., the Prices set forth
     in  Supplement  1)),  functionally  equivalent  replacement  parts  for the
     maintenance  and repair of the  Hardware  purchased  under  this  Agreement
     ("Replacement Parts").

23.2 During the  Support  Term,  Seller  shall also make  available  for sale to
     Buyer,  support for the  Software  licensed by Buyer  hereunder at Seller's
     then-current  prices,  terms and  conditions  based upon Seller's  Software
     support policies  (unless such prices,  terms and conditions are superseded
     by  prevailing  contractual  provisions,  e.g.,  the  Prices  set  forth in
     Supplement 1).

23.3 Seller may at any time discontinue to manufacture any part of the Equipment
     ("MD Equipment"),  provided,  however, that Seller shall first notify Buyer
     in writing of Seller's  intent to  discontinue  the  manufacture of such MD
     Equipment  reasonably in advance of the scheduled  date for  discontinuance
     ("MD  Date"),  but in no event less than  ninety  (90) days prior to the MD
     Date.  Such  notification  shall specify the  description  and  approximate
     quantity of the MD Equipment  which Seller then has in inventory,  or plans
     to  inventory,  sufficiently  in advance of the MD Date,  to allow Buyer to
     purchase any  Discontinued  Equipment it may desire prior to the MD Date at
     Seller's  then-current  prices,  terms and conditions  (unless such prices,
     terms and conditions are superseded by prevailing contractual provisions).

23.4 At the  conclusion  of the  Support  Term,  and for a  period  of five  (5)
     consecutive  years  thereafter,  in the event  Seller is unable to  provide
     Buyer with additional  quantities of Replacement Parts,  Seller shall, upon
     Buyer's written request,  deliver to Buyer the drawings and  specifications
     for  such  Replacement  Parts  as  may  be  necessary  to  allow  Buyer  to
     manufacture (or cause to be manufactured) or procure any Replacement  Parts
     which Seller no longer has available for purchase ("Buyer Produced Parts").
     Seller will provide Buyer a non-exclusive  royalty free license to make (or
     have made) and use such Buyer Produced Parts,  provided such Buyer Produced
     Parts  shall be used  only as  Replacement  Parts for  Equipment  purchased
     hereunder.  Seller shall provide Buyer drawings and  specifications for OEM
     Equipment only to the extent Seller has the right to

                                       28


     legally  disclose  such  drawings  and  specifications.   Any  drawings  or
     specifications  for the Buyer  Produced  Parts  provided to Buyer by Seller
     shall be governed by Section 20 of this  Agreement,  unless the exchange of
     such  technical  information  is  superseded  by  then-current  contractual
     provisions.

24.  INSURANCE; GENERAL INDEMNITY; LIMITATION OF LIABILITY
     -----------------------------------------------------

24.1 Seller  will  procure  and  maintain,   during  the  Term,  insurance  with
     financially  sound and reputable  insurance  companies in not less than the
     following amounts:

     24.1.1  Workers'  Compensation  insurance in accordance with the provisions
             of the  applicable  Workers'  Compensation  or similar  law of each
             state or other political  subdivision with jurisdiction  applicable
             to Seller's  respective  personnel,  and Employers liability in the
             amount of $1,000,000 per occurrence; and

     24.1.2  All-risk property insurance covering all property owned by or under
             the  control  of Seller  insured  for full  replacement  value with
             commercially reasonable deductibles; and

     24.1.3  Commercial  General Liability  insurance (without any exclusion for
             liability  arising  from RF  emissions  but  including  contractual
             liability,  products liability,  and completed operations coverage)
             with a coverage limit of not less than $10,000,000  combined single
             limit per occurrence of bodily injury or property damage liability;
             and

     24.1.4  If Seller (or any of its  employees  or agents) is  required to use
             any vehicle in the performance of this Agreement,  Business Vehicle
             Liability  insurance for the operation of all owned,  non-owned and
             hired  vehicles with a coverage  limit of not less than  $1,000,000
             combined  single limit per accident for bodily  injury and property
             damage liability.

24.2 All  insurance  required  to be provided  pursuant  to Sections  24.1.3 and
     24.1.4  (a)  shall be  occurrence  based,  and (b) shall  name  Buyer as an
     additional  insured with respect only to the  operations of Seller.  Seller
     shall  waive  subrogation  in favor of Buyer  in  respect  of the  all-risk
     property insurance referred to in Section 24.1.2.

24.3 Each party  shall be liable for direct  losses  incurred by the other party
     due to  bodily  injury  or  damage  to  tangible  property,  including  the
     Hardware,  which results from the  negligence of that party's  employees or
     agents, provided,  however, that nothing in this Section shall affect or in
     any way increase  Seller's  obligation under this Agreement with respect to
     the performance of the Hardware and/or Software.  Except for bodily injury,
     Seller's  obligations  under  Section  9,  or a  breach  by  Seller  of its
     obligations under Section 19 or 20, or a breach by Buyer of its obligations
     under  Section  10,  19  or  20,  the  total   liability  of  either  party
     (individually)  for all claims of any kind for any loss or damage,  whether
     in contract,  warranty,  tort (including  negligence),  strict liability or
     otherwise, or claims for indemnification arising out of, connected with, or
     resulting from the performance or  non-performance  of this Agreement shall
     in no case exceed the cumulative  Price of all Purchase  Orders accepted by
     Seller under this Agreement.

                                       29


25.  SUPPLEMENT AND ANNEXES
     ----------------------

     The  following  Supplement  and Annexes shall form an integral part of this
     Agreement as though written out in full in this Agreement:

SUPPLEMENT 1  -     SPECIFIC TERMS RELATED TO EQUIPMENT PRICING, PRODUCT CREDITS
                    AND DISCOUNTS, TRADE-IN ALLOWANCES AND TRAINING
ANNEX 1       -     HARDWARE DESCRIPTIONS
ANNEX 2       -     SERVICES DESCRIPTIONS
ANNEX 3       -     STATEMENT OF WORK
ANNEX 4       -     TURNOVER AND ACCEPTANCE NOTICES
ANNEX 5       -     WARRANTY SERVICES
ANNEX 6       -      SAMPLE PROJECT PLAN
ANNEX 7       -     AFFILIATES
ANNEX 8       -     SOFTWARE ACCESS
ANNEX 9       -     MTX10 AND MTX 11 SOFTWARE


26.  GENERAL
     -------

26.1 Either party may assign or transfer this Agreement or any rights  hereunder
     only with the prior  written  consent of the other  party,  except that (a)
     Seller may assign its rights  and  obligations  under this  Agreement  to a
     Seller  Affiliate  without  the  consent  of Buyer,  provided  such  Seller
     Affiliate  is not a  competitor  of Buyer  in the  provisions  of  wireless
     telecommunication services, in which case Buyer's consent will be required;
     and (b) Buyer may assign its rights and obligations under this Agreement to
     TDS or any Affiliate without the consent of Seller, provided such Affiliate
     is not a  competitor  of Seller  in the  manufacture  and sale of  wireless
     telecommunications  equipment,  in  which  case  Seller's  consent  will be
     required. No assignment or sublicense of or under this Agreement, or of any
     rights under this Agreement,  by Buyer or Seller,  shall relieve such party
     of primary  responsibility  for performance of its  obligations  under this
     Agreement.  Seller  reserves the right to refuse to honor any assignment or
     sublicense which, in the opinion of its legal counsel,  would require it to
     violate any United States  export  restriction,  other law, or  regulation.
     Seller  reserves  the right to  subcontract  any portion of its  obligation
     under this  Agreement,  but no such  subcontract  shall  relieve  Seller of
     primary  responsibility for performance of Seller's  obligations under this
     Agreement.

26.2 The  appointment of  subcontractors  by Seller and the staffing of Seller's
     personnel shall be at Seller's discretion,  provided,  however,  that Buyer
     may  request and Seller  shall  remove and  replace  any  subcontractor  or
     employee whom Buyer, in its reasonable  judgment,  finds  objectionable  or
     otherwise incompetent to perform the required tasks. Any such request shall
     be in writing stating in reasonable  detail Buyer's  justification  for the
     request.  Within two weeks after Seller's  receipt of such written request,
     Seller shall replace such removed subcontractor or employee.

                                       30


26.3 Neither party shall knowingly  solicit to hire employees of the other party
     with whom it had  contact as a result of having been  directly  involved in
     the  performance of this  Agreement.  Neither party shall be precluded from
     conducting  generalized  searches for employees (and hiring those employees
     who respond to generalized searches) either through the use of search firms
     or advertisements in the media.

26.4 Notices  and  other  communications  shall be  transmitted  in  writing  by
     Certified U.S. Mail,  postage prepaid,  return receipt  requested,  or by a
     nationally  recognized  overnight  courier,  addressed  to the  parties  as
     follows:

         Nortel Networks Inc.
         4010 E. Chapel Hill-Nelson Hwy
         Research Triangle Park, NC 27709
         Attention:  Contracts Dept 9787 MS D17/03/0F2

         United States Cellular Corporation
         8410 West Bryn Mawr Avenue, Suite 700
         Chicago, Illinois 60631-3486
         Attention:  Purchasing Manager

         with a copy to
         United States Cellular Corporation
         8410 West Bryn Mawr Avenue, Suite 700
         Chicago, Illinois 60631-3486
         Attention:  Executive Vice President and Chief Technology Officer

         Telephone and Data Systems, Inc.
         30 N. LaSalle Street
         Suite 4000
         Chicago, Illinois 60602
         Attention: Peter Sereda, Vice President and Treasurer

         and a copy to:
         Sidley Austin Brown & Wood
         10 South Dearborn Street
         Chicago, Illinois 60603
         Attention:  Stephen P. Fitzell, Esq.

         Any notice given  pursuant to this Section 26.4 shall be effective upon
         receipt as evidenced by the U.S.  Postal Service return receipt card or
         courier's documentation.

26.5 Except as otherwise provided herein,  this Agreement may not be modified or
     amended or any rights of a party to it waived except in a writing signed by
     duly authorized representatives of the parties hereto.

26.6 Failure  by either  party at any time to require  performance  by the other
     party or to claim a breach of any provision of this Agreement  shall not be
     construed  as  affecting  any

                                       31


     subsequent breach or the right to require  performance with respect thereto
     or to claim a breach with respect thereto.

26.7 The rights and  obligations  of the  parties  and all  interpretations  and
     performance of this Agreement shall be governed in all respects by the laws
     of the State of Illinois  except for its rules with respect to the conflict
     of laws.

26.8 Section headings are inserted for convenience only and shall not be used in
     any way to construe the terms of this Agreement.

26.9 The  relationship  between the parties is that of independent  contractors.
     Neither party has any authority to bind the other party.

26.10 The  invalidity in whole or in part,  of any  provision of this  Agreement
      shall not affect the validity of the  remainder of such  provision or this
      Agreement.

26.11 This  Agreement  may be executed in multiple  counterparts,  each of which
      shall  be  deemed  an  original  and all of  which  taken  together  shall
      constitute one and the same instrument.

26.12 Each party hereto  represents  and  warrants  that (i) it has obtained all
      necessary  approvals,  consents and  authorizations  of third  parties and
      governmental  authorities  to enter into this Agreement and to perform and
      carry out its  obligations  hereunder;  (ii) the  persons  executing  this
      Agreement on its behalf have express authority to do so, and, in so doing,
      to  bind  the  party  thereto;  and  (iii)  the  execution,  delivery  and
      performance  of this  Agreement has been duly  authorized by all necessary
      partnership or corporate  action and this Agreement is a valid and binding
      obligation of such party, enforceable in accordance with its terms.

26.13 No agent,  employee or  representative of Seller has any authority to bind
      Seller to any  affirmation,  representation,  or warranty  concerning  the
      Equipment, except as stated in this Agreement and unless such affirmation,
      representation,   or  warranty  is   specifically   included  within  this
      Agreement,  it  shall  not be  enforceable  by Buyer  or any  assignee  or
      sublicensee of Buyer. Buyer hereby acknowledges and agrees that it has not
      relied on any representations or warranties other than those expressly set
      forth in this Agreement.  This Agreement  constitutes the entire agreement
      between Seller and the Buyer with respect to the subject matter hereof and
      supersedes all previous negotiations,  proposals,  commitments,  writings,
      advertisements, publications and understandings of any nature whatsoever.

26.14 References to a "Section,"  when used without further  attribution,  shall
      refer  to the  particular  sections  of the main  body of this  Agreement;
      provided  that  references  to a "Section" in an Annex or the  Supplement,
      when used  without  further  attribution,  shall  refer to the  particular
      sections of the Annex or Supplement in which such reference appears.

                                       32


26.15 Any reference herein to Software or Equipment being "sold," "purchased" or
      the like shall be deemed to refer to the Software or the software  portion
      of the applicable Equipment, respectively, being licensed to Buyer.







                                       33




IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be executed
by their representatives being thereunto duly authorized.


UNITED STATES CELLULAR                NORTEL NETWORKS INC.
CORPORATION

By: /s/ Hichem Garnaoui               By: /s/ Anthony Cioffi
   ------------------------              ---------------------

Name: Hichem Garnaoui                 Name: Anthony Cioffi
     ----------------------                -------------------

       (Type/Print)                       (Type/Print)


Title: VP-National Networks           Title: RVP-East
      ---------------------                 ------------------


Date: August 6, 2002                  Date: August 2, 2002
     ----------------------                -------------------



                                       34