SECURITIES AND EXCHANGE COMMISSION

                            Washington, DC.  20549

                                  FORM 10-Q

              Quarterly Report Pursuant to Section 13 or 15 (d)
                   of the Securities Exchange Act of 1934

For the quarterly period ended                    Commission File Number 0-19437
MARCH 31, 1997

                    CELLULAR TECHNICAL SERVICES COMPANY, INC.
              (Exact Name of Registrant as Specified in Its Charter)

          DELAWARE                                       11-2962080
  (State of Other Jurisdiction of                    (I.R.S. Employer
   Incorporation or Organization)                     Identification No.)

                 2401 FOURTH AVENUE, SEATTLE, WASHINGTON  98121
              (Address of Principal Executive Offices)  (Zip Code)

      Registrant's telephone number, including area code:  (206) 443-6400

                                  NOT APPLICABLE
                (Former name, former address and former fiscal year,
                          if changed since last report.)

     Indicate by check mark whether the Registrant (1) has filed all reports 
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 
1934 during the preceding 12 months (or for such shorter period that the 
Registrant was required to file such reports), and (2) has been subject to 
the filing requirements for the past 90 days.  Yes  X    No
                                                  -----    -----

             22,708,932 Common Shares were outstanding as of May 12, 1997.

                                    Page 1



                   CELLULAR TECHNICAL SERVICES COMPANY, INC.

                        TABLE OF CONTENTS FOR FORM 10-Q

PART I.  FINANCIAL INFORMATION..............................................3

Item 1. Financial Statements................................................3

Item 2. Management's Discussion and Analysis of Financial Condition 
        and Results of Operations...........................................7

PART II.  OTHER INFORMATION................................................11

Item 6. Exhibits and Reports on Form 8-K...................................11

                                    Page 2



                   CELLULAR TECHNICAL SERVICES COMPANY, INC.

                       PART I.  FINANCIAL INFORMATION

ITEM 1.   FINANCIAL STATEMENTS

                                 BALANCE SHEETS

                      (in 000's, except per share amounts)
                                   (unaudited)

                                                     March 31,    December 31,
                                                       1997          1996
                                                    -----------  --------------
                                     ASSETS
CURRENT ASSETS
   Cash and cash equivalents                           $ 4,706         $  4,854
   Accounts receivable, net                             12,356           11,616
   Inventories, net                                      7,361            8,275
   Prepaid expenses and other current assets               738              831
                                                      --------         --------
      Total Current Assets                              25,161           25,576

PROPERTY AND EQUIPMENT, net                              3,772            3,177

SOFTWARE DEVELOPMENT COSTS, net                          3,664            3,599
                                                      --------         --------
TOTAL ASSETS                                           $32,597         $ 32,352
                                                      --------         --------
                                                      --------         --------

                       LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES
   Accounts payable and accrued liabilities            $ 3,696         $  6,365
   Payroll related liabilities                           1,099              735
   Taxes (other than payroll and income)                 1,173              660
   Customers' deposits                                     298            4,626
   Deferred revenue                                      3,710            1,781
                                                      --------         --------
      Total Current Liabilities                          9,976           14,167

STOCKHOLDERS' EQUITY
   Preferred Stock, $0.01 par value per share,
     5,000 shares authorized, none issued 
     and outstanding
   Common Stock, $0.001 par value per share,
     30,000 shares authorized, 22,641 shares issued 
     and outstanding in 1997 and  22,636 in 1996            23               23
   Additional paid-in capital                           29,160           29,138
   Deficit                                              (6,562)         (10,976)
                                                      --------         --------
      Total Stockholders' Equity                        22,621           18,185
                                                      --------         --------
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY             $32,597         $ 32,352
                                                      --------         --------
                                                      --------         --------
- --------------------
The accompanying notes are an integral part of these financial statements.

                                    Page 3


                   CELLULAR TECHNICAL SERVICES COMPANY, INC.

                           STATEMENTS OF OPERATIONS

                    (in 000's, except per share amounts)
                                  (unaudited)

                                                          Three Months Ended
                                                              March 31,
                                                         ---------------------
                                                          1997           1996
                                                         ------         ------
REVENUES
  Systems                                               $16,826         $  432
  Services                                                  542            303
                                                        -------         ------
Total Revenues                                           17,368            735

COSTS AND EXPENSES
  Cost of systems and services                            8,375          1,013
  Sales and marketing                                     1,395            823
  General and administrative                                892            511
  Research and development                                2,340            996
                                                        -------         ------
Total Costs and Expenses                                 13,002          3,343
                                                        -------         ------
INCOME (LOSS) FROM OPERATIONS                             4,366         (2,608)

INTEREST INCOME                                              48            107
                                                        -------         ------
INCOME (LOSS) BEFORE INCOME TAXES                         4,414         (2,501)

PROVISION FOR INCOME TAXES                                    -              -
                                                        -------         ------
NET INCOME (LOSS)                                       $ 4,414        $(2,501)
                                                        -------         ------
                                                        -------         ------
NET INCOME (LOSS) PER SHARE                             $   .19        $  (.12)
                                                        -------         ------
                                                        -------         ------
WEIGHTED AVERAGE SHARES OUTSTANDING                      23,711         21,609
                                                        -------         ------
                                                        -------         ------
- --------------------
The accompanying notes are an integral part of these financial statements.

                                    Page 4



                   CELLULAR TECHNICAL SERVICES COMPANY, INC.

                            STATEMENTS OF CASH FLOWS

                      (in 000's, except per share amounts)
                                   (unaudited)

Three Months Ended March 31, --------------------- 1997 1996 ------ ------ OPERATING ACTIVITIES Net income (loss) $ 4,414 $(2,501) Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities: Depreciation and amortization of property and equipment 277 181 Amortization of software development costs 305 280 Changes in operating assets and liabilities: (Increase) decrease in accounts receivable (740) 28 Decrease (increase) in inventories 914 (836) Decrease (increase) in prepaid expenses and other current assets 93 (462) (Decrease) in accounts payable and accrued liabilities (2,669) (241) Increase in payroll related liabilities 364 73 Increase (decrease) in taxes (other than payroll and income) 513 (169) (Decrease) increase in customers' deposits (4,328) (13) Increase in deferred revenue 1,929 146 ------- ------- NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES 1,072 (3,514) INVESTING ACTIVITIES Purchase of property and equipment (872) (145) Capitalization of software development costs (370) (434) ------- ------- NET CASH USED IN INVESTING ACTIVITIES (1,242) (579) FINANCING ACTIVITIES Proceeds from exercise of stock options 22 365 ------- ------- NET CASH PROVIDED BY FINANCING ACTIVITIES 22 365 ------- ------- NET DECREASE IN CASH AND CASH EQUIVALENTS (148) (3,728) CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 4,854 9,448 ------- ------- CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 4,706 $ 5,720 ------- ------- ------- -------
- ----------------------------------- The accompanying notes are an integral part of these financial statements. Page 5 CELLULAR TECHNICAL SERVICES COMPANY, INC. NOTES TO FINANCIAL STATEMENTS NOTE A - BASIS OF PRESENTATION The accompanying unaudited financial statements of Cellular Technical Services Company, Inc. (the "Company"), including the December 31, 1996 balance sheet which has been derived from audited financial statements, have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. The operating results for the three month period ended March 31, 1997 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 1997. For further information, refer to the financial statements and footnotes thereto included in the Company's Annual Report on Form 10-K for the year ended December 31, 1996. NOTE B - INVENTORIES: Inventory consists of the following (in 000's): March 31, December 31, 1997 1996 ---------- -------------- Raw materials components $ 3,638 $ 2,723 Work in process and finished components 4,693 6,014 ---------- ---------- 8,331 8,737 Less inventory reserves (970) (462) ---------- ---------- $ 7,361 $ 8,275 ---------- ---------- ---------- ---------- NOTE C - EARNINGS PER SHARE In February 1997, the Financial Accounting Standards Board issued Statement No. 128, Earnings Per Share, which is required to be adopted on December 31, 1997. At that time, the Company will be required to change the method currently used to compute earnings per share and to restate all prior periods. Under the new requirements for calculating primary earnings per share, the dilutive effect of stock options will be excluded. The impact is not expected to result in an increase in primary earnings per share for the first quarters ended March 31, 1997 and March 31, 1996, respectively. The impact of Statement No. 128 on the calculation of fully diluted earnings per share for these quarters is not expected to be material. Page 6 ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The following discussion and analysis provides information which management believes is relevant to an assessment and understanding of the Company's results of operations and financial condition. The discussion should be read in conjunction with the financial statements and notes thereto. OVERVIEW To address the wireless communications industry's increasing need for products to more effectively combat cloning fraud, a major industry problem, the Company has developed the Blackbird-Registered Trademark- Platform and related application products and services ("Blackbird Products"). The Blackbird Platform has been engineered with an open architecture design to allow the Company and others to develop application products which could run on or exchange information with it. Prior to the Company's third quarter of 1996, revenues had been primarily derived from the Company's Hotwatch-Registered Trademark- Platform and related application products and services ("Hotwatch Products") and, to a lesser extent, phone rental products which are no longer being marketed by the Company. In 1995, the Company began conducting trials for the purpose of testing and evaluating the Blackbird Products. Since that time, the Company has signed agreements with AirTouch Cellular ("AirTouch"), Bell Atlantic NYNEX Mobile ("BANM"), GTE Mobilnet of California Limited Partnership ("GTE-California"), GTE Mobilnet Service Corp. ("GTE Corp") and Ameritech Mobile Communications, Inc. ("Ameritech") to deploy and support the Blackbird Products. During the last half of 1996, the Company recorded its first substantive revenues from two of these agreements. Revenue recognition for the Company's systems is based upon performance criteria which vary from customer to customer and product to product. Physical hardware and software delivery, definitions of system delivery, and customer acceptance are generally the significant factors used in determining revenue recognition. As a result of such performance criteria, only a portion of the systems revenues and the majority of the system costs may be recorded during the early stages of a system deployment. Accordingly, revenues and direct margins recorded by the Company can be expected to be lower in earlier periods of deployment and inconsistent from quarter to quarter, especially during the initial market deployments under new agreements, as was the case during the last half of 1996. The resulting deferral of revenue is recognized in subsequent periods as the performance criteria specified in the applicable agreement is met. In addition, the Company has incurred substantial operating expenses during the early deployments, primarily in the areas of sales and marketing, installation and customer support, and in research and development. The Company expects that its costs and expenses will continue to increase in the future, due to a continual need to make substantial investments in research and development, enhanced sales and marketing activities, and expansion of customer support capabilities needed to service its anticipated product deployments in both domestic and international markets. The Company's revenue and customer base is currently concentrated among a few large domestic cellular carriers due to the significant concentration of ownership and/or control of cellular licenses. As the Company expands its domestic and international marketing efforts, and as the wireless communications industry expands beyond cellular telephony to include other wireless communication services, the Company believes that it will be able to diversify its revenue and customer base. To date, the Company's sales have been generated by the Company's in-house sales force. The Company currently uses and expects to continue using agents and/or distributors in conjunction with its in-house sales efforts for sales in the international marketplace. While the Company has not yet signed international sales agreements, it is in the process of exploring and identifying limitations that may be placed upon it by foreign operations and the expected resulting impact upon the Page 7 Company's results of operations and liquidity. Its success in exploiting these expanded markets and in achieving and maintaining profitability on both domestic and international operations, will depend on, among other things, its ability to: (i) make its existing and future technology commercially acceptable, (ii) recognize and successfully adapt to the rapid changes in the wireless communications industry (including digital services), (iii) enhance and expand its manufacturing activities concurrent with its growth, (iv) comply with foreign regulatory requirements without negatively impacting the Company's results of operations or liquidity, (v) manage intellectual property protection in foreign countries, (vi) manage foreign currency exchange rate fluctuations that may be attributed to international sales contracts, and (vii) engage additional sales agents and/or distributors on a timely and economic basis. These and other factors could delay revenues and/or increase the cost of doing business. THREE MONTHS ENDED MARCH 31, 1997 COMPARED TO THREE MONTHS ENDED MARCH 31, 1996 Total revenues increased 2,263% to $17.4 million in 1997 from $.7 million in 1996 and the Company generated net income of $4.4 million, or $0.19 per share in 1997 compared to net loss of $2.5 million, or $0.12 per share in 1996. The increase in revenues and resulting net income is directly attributable to the Company's deployment and commercial acceptance of its Blackbird Products. Systems revenues are generated from licensing and sales of the Company's proprietary software and hardware products, from the sale of third party equipment sold in support of the proprietary systems, and to a lesser extent, fees earned associated with the installation and deployment of such systems. Systems revenues increased 3,795% to $16.8 million in 1997 from $0.4 million in 1996 and represent revenues primarily from Blackbird Products derived from sales under the agreements with AirTouch, BANM, GTE-California and Ameritech. There were no corresponding system revenues during 1996. System revenues from Hotwatch Products during the period were minimal and are not expected to contribute significantly to revenues in the future. Service revenues are derived primarily from hardware and software maintenance, software upgrades and new releases, No Clone ZoneSM roaming protection services, system monitoring and related professional services provided in support of the Company's currently deployed product base. These revenues increased 79% to $0.5 million in 1997 from $0.3 million in 1996. This increase is directly attributable to growing service revenues originating from Blackbird Products that were deployed in late 1996. The Company anticipates that total service revenues during 1997 and beyond will continue to increase as a result of continued deployment of the Company's Blackbird Products. Costs of systems and services increased 727% to $8.4 million in 1997 from $1.0 million in 1996. Costs of systems and services are primarily comprised of the costs of: (i) equipment (which primarily includes proprietary and third party hardware, and to a lesser extent, manufacturing overhead, and related expenses), (ii) amortization of capitalized software development, (iii) system integration and installation, (iv) patent royalty fees, and (v) customer support. Costs of equipment totaled $6.0 million in 1997 and were primarily related to Blackbird Product deployments. Such costs for the corresponding period in 1996 were minimal. Cost of software amortization, system integration and installation, patent license fees and customer support increased 140% to $2.4 million in 1997 from $1.0 million in 1996 and is attributable primarily to increased personnel and related overhead costs associated with installing and supporting products in the Company's expanded customer base. Costs of systems and services, as a percent of total revenues, were 48% and 138% for the 1997 and 1996 periods, respectively. The improvement in 1997 is attributable to an increased volume of system sales, where direct margins exceeded fixed costs of systems and services, which was not the case in 1996. Page 8 Sales and marketing expenses increased 70% to $1.4 million in 1997 from $0.8 million in 1996. This increase is primarily attributable to personnel and related costs incurred in connection with the Company's increased efforts to generate demand for its products and the costs incurred during both pre- and post-sales contract activities related to the Blackbird Products. To a lesser extent, variable sales incentive compensation contributed to the 1997 increased expenses. General and administrative expenses increased 75% to $0.9 million in 1997 from $0.5 million in 1996 principally due to increased personnel related costs associated with the continued expansion of the Company's business, and to a lesser extent, incentive compensation accruals that would be payable upon achievement of annual financial and operating goals. Research and development expenditures include the costs for research, design, development, testing, preparation of training and user documentation, and fixing and refining features for the software and hardware components included in the Company's current and future product lines. Research and development costs increased 135% to $2.3 million in 1997 from $1.0 million in 1996. Software development costs of $0.4 million were capitalized during each period for 1997 and 1996 and related to the development of the Blackbird Products. Capitalized development costs did not increase in 1997 at the same rate as did research and development expenses primarily due to an increase in the non-capitalizable research, design, and maintenance activities associated with the Blackbird Products either deployed or new and/or enhanced products in the research and design stages. Including capitalized software development costs, gross research and development expenditures increased 93% to $2.7 million in 1997 from $1.4 million in 1996, primarily due to expanded investment in the Blackbird Products. Interest income decreased 55% to $0.05 million in 1997 from $0.1 million in 1996. The decrease was attributable to lower average cash balances invested at lower average interest rates during 1997 as compared to 1996. LIQUIDITY AND CAPITAL RESOURCES The Company's capital requirements have consisted primarily of funding software development, property and equipment requirements, working capital and the Company's operating losses in prior periods. The Company has historically funded these requirements through issuance of Common Stock (including proceeds from the exercise of warrants and options) and from operating profits in certain periods. On March 31, 1997 the Company's cash balance was $4.7 million as compared to $4.9 million on December 31, 1996. The Company's working capital increased to $15.2 million at March 31, 1997 from $11.4 million at December 31, 1996. Cash provided by operating activities amounted to $1.1 million in 1997, as compared to cash used by operating activities of $3.5 million in 1996. The major factor contributing to the Company's cash flow from operating activities is the profit recorded in 1997 and the loss incurred in 1996. Depreciation and amortization, which provides cash for operating activities, increased moderately and is attributable to the increased investment in software development and property and equipment as discussed below. In addition, the net changes in the balances of the major working capital components impacted cash flow from operating activities and included: (i) accounts receivable, which increased in 1997 as a result of Blackbird System revenues recorded during the first three months of the year, (ii) inventories, which decreased in response to sales demand for Blackbird Products during 1997, (iii) accounts payable, which decreased due to payments made for inventory purchases in late 1996, (iv) deferred revenue, which increased primarily as a result of the growth of prepaid maintenance and service contracts related to the Blackbird system sales, and (v) customer deposits, which decrease reflects revenues associated with initial sales to new customers that were recorded subsequent to cash received. During the early stages of deploying the Blackbird Products, the Company has experienced uneven cash flow and operating Page 9 results. These factors originate from the deferred revenue recognition and payment terms contained in customer agreements. Cash utilized by investing activities totaled $1.2 million and $0.6 million in 1997 and 1996, respectively. The Company's capital requirements during such periods were (i) software development of the Blackbird Products and (ii) property and equipment, primarily for furniture, leaseholds, and equipment associated with expanding the Company's business. These expenditure levels are expected to continue in 1997 at or above the current levels. At March 31, 1997, the Company had no significant commitments for capital expenditures. The Company, as part of its growth strategy, would consider the cost/benefit of purchasing software and/or hardware technology in the event that an attractive opportunity arises. Cash provided by financing activities (exercise of stock options by the Company's directors, officers and employees) totaled $0.02 million and $0.4 million during 1997 and 1996, respectively. In November 1996, the Company sold 400,000 shares of common stock to investors in a private placement with proceeds to the Company approximating $6.4 million net of estimated expenses. A registration statement for the resale of such shares was declared effective by the Securities and Exchange Commission in April 1997. Also, in November 1996, the Company obtained a $5.0 million line of credit from a major bank. The line, which is secured by all personal property of the Company, bears interest at the prime rate plus .75% and expires September 30, 1997. The proceeds from the stock sale and the line of credit will be used to fund the Company's growth and provide additional working capital. No funds have been drawn on the line of credit as of this date. The Company expects to continue to incur substantial expenses in (i) support of research and development activities, (ii) growth of its sales and marketing organization, (iii) support for new products and the anticipated expanded customer base, (iv) enhancing the hardware design and manufacturing processes, and (v) administrative activities. The Company believes that cash flow anticipated from its operating activities, existing cash balances and cash available under its line of credit, are sufficient to fund its operations for at least the next 12 months. SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS A number of statements contained in this report are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that involve risks and uncertainties that could cause actual results to differ materially from those expressed or implied in the applicable statements. These risks and uncertainties include but are not limited to: the Company's dependence on the cellular communications market; its vulnerability to rapid industry change and technological obsolescence; uncertainties in duration of the life cycle of its products; risks involved in the early stages of the life cycle of its products, including worldwide commercial market acceptance and the risks that its current and future products may contain errors or be affected by technical problems that would be difficult and costly to detect and correct; manufacturing difficulties; potential difficulties in managing growth; dependence on key personnel; the Company's limited customer base and reliance on a relatively small number of customers; the possible impact of competitive products and pricing; the uncertain level of actual purchases of its products by current and prospective domestic and international customers under existing and future agreements; uncertainties in the Company's ability to implement these agreements sufficiently to permit it to recognize revenue under its accounting policies (including its ability to meet product performance criteria contained in such agreements); the results of financing efforts; uncertainties with respect to the Company's business strategy; general economic conditions; and other risks described in the Company's filings with the Securities and Exchange Commission. Page 10 PART II. OTHER INFORMATION ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K a) EXHIBITS 10.1 Master Purchase and License Agreement between the Company and GTE Mobilnet Service Corp. dated April 23, 1997 (2) 11.1 Computation of Earnings Per Share (1) 27 Financial Data Schedule - filed only with EDGAR submission - -------------------- (1) Filed herewith. (2) Filed herewith, confidential treatment requested pursuant to Rule 24b-2 of the Securities and Exchange Commission. b) REPORTS ON FORM 8-K The Company filed a Current Report on Form 8-K, the date of which was January 2, 1997, under Item 5 of such Report, relating to a lawsuit commenced against the Company. The Company filed a Current Report on Form 8-K, the date of which was January 21, 1997, under Item 5 of such Report, relating to an agreement modifying the employment relationship between the Company and its then President and Chief Operating Officer. The Company filed a Current Report on Form 8-K, the date of which was February 19, 1997, under Item 5 of such Report, relating to an employment agreement entered into with the current President and Chief Operating Officer of the Company. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized. CELLULAR TECHNICAL SERVICES COMPANY, INC. By: /s/Michael E. McConnell ---------------------------------------- Michael E. McConnell Vice President and Chief Financial Officer May 14, 1997 Page 11

                                                                 EXHIBIT 10.1

                   MASTER PURCHASE AND LICENSE AGREEMENT

          This Master Purchase and License Agreement is made as of April 23,
1997, by and between CELLULAR TECHNICAL SERVICES COMPANY, INC., a Delaware
corporation ("CTS"), and GTE MOBILNET SERVICE CORP., a Delaware corporation 
("Customer").  In consideration of the mutual promises and covenants contained
herein and for other good and valuable consideration, the receipt and
sufficiency of which is hereby mutually acknowledged, CTS and Customer hereby
agree as follows:

          1.   DEFINITIONS.  Whenever used in this Agreement, the following
terms shall have the following meanings:

               1.1  "Acceptance Test Plan" means the CTS standard form of
Acceptance Test Plan set forth in the attached SCHEDULE E.

               1.2  "Agreement" means this Master Purchase and License Agreement
and the attached Schedules, together with all amendments and supplements which
may be made thereto from time to time by mutual agreement of the parties.

               1.3  "Customer Facility" means each Regional Processor Complex,
Cell Site, or other location within a Licensed Market at which any Component of
a System is installed or to be installed under this Agreement.

               1.4  "Cell Site" means a cellular radio base station location
consisting of radio, antenna, and power equipment:  (i) which provides cellular
telecommunications service to a particular geographic area; (ii) in which
certain Components of a System are installed in accordance with this Agreement
and an applicable Market Purchase Agreement; (iii) which complies with the
Infrastructure and Environmental Requirements; and (iv) in which a direct
antenna frame hook-up is provided by Customer for the Cell Site System Hardware
installed therein.

               1.5  "Component" means an individual item of the Hardware or
Licensed Programs.

               1.6  "Confidential Information" shall have the same meaning
ascribed to such term in the Nondisclosure Agreement.

               1.7  "Customer Affiliate" means a person, association,
partnership, corporation or joint stock company or trust that directly or
indirectly, through one or more intermediaries, controls, is controlled by or is
under common control with, the Customer.  For purposes of the above definition,
"control" means:  (i) ownership of a majority of the voting power of all classes
of voting stock; (ii) ownership of a majority of the beneficial interests in
income and capital of an entity other than a corporation; (iii) ownership of a
general partnership interest in a limited partnership; or (iv) ownership of a
managing partnership interest in a general partnership."

               1.8  "Customization" means any modification, enhancement, or
improvement to any Licensed Program that is made by CTS at the request of
Customer in accordance with this Agreement, and which is not made generally
commercially available by CTS to other cellular carrier licensees of CTS in the
United States.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 1


               1.9  "Documentation" means CTS's standard user manual(s) for a
System and all other written documentation for a System which CTS furnishes to
Customer for purposes of this Agreement (as such documentation may be reasonably
modified or updated from time to time by CTS with notice to Customer). 
Documentation may include, if applicable, documentation provided to CTS by its
suppliers or licensors to the extent CTS is authorized by them to provide such
documentation to Customer.

               1.10 "Fees" means the moneys required to be paid by Customer to
CTS in connection with this Agreement, including without limitation charges for
Hardware, Licensed Programs, out-of-pocket reimbursable expenses, and any other
charges for goods and/or services provided by CTS in connection with this
Agreement.

               1.11 "Hardware" means the following with respect to the System
installed or to be installed in a given Licensed Market:  (i) the computer
equipment and peripherals (including any operating system software bundled with
such equipment as supplied by the equipment manufacturer) described in the
applicable Market Purchase Agreement for such System in such quantities as CTS
and Customer agree are necessary to operate the initial configuration of such
System; and (ii) any additional computer equipment and peripherals as CTS and
Customer may, from time to time, agree in writing to add to such System as
Hardware.

               1.12 "Implementation Schedule" means each mutually acceptable
schedule showing the time periods during which CTS and Customer will cause
appropriate persons to begin and complete delivery, installation, training,
and/or acceptance testing of particular Components for a System.

               1.13 "Infrastructure and Environmental Requirements" means the
physical, electrical, connectivity, and other infrastructure and environmental
requirements described in Documentation furnished by CTS to Customer, which
requirements are to be satisfied by Customer at each Customer Facility in
accordance with this Agreement.

               1.14 "Intellectual Property Rights" means any valid patent,
copyright, trade secret, trademark, or other intellectual property right.

               1.15 "License" means the license granted to Customer under
Subsection 2.1, below.

               1.16 "Licensed Programs" means the following with respect to the
System installed or to be installed in a given Licensed Market:  (i) the CTS-
owned computer software (including firmware and patches), in object code form
only, and the Third-Party Software, in object code form only, described in the
applicable Market Purchase Agreement for such System; (ii) all New Releases,
Maintenance Releases, and Customizations provided by CTS to Customer for such
System; and (iii) any additional software, data tables, and programs as CTS and
Customer may, from time to time, agree in writing to add to such System as
Licensed Programs.

               1.17 "Licensed Market" means, for each of the market areas
identified in the attached SCHEDULE C, the aggregate of:  (i) the corresponding
cellular service areas identified in such Schedule which are covered by a System
installed in accordance with this Agreement and an applicable Market Purchase
Agreement; and (ii) any modifications to such areas as Customer may, from time
to time, determine with the consent of CTS, which consent will not be
unreasonably withheld.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 2


               1.18 "Maintenance Release" means a correction of errors, bugs, or
defects in the Licensed Programs which is made generally commercially available
by CTS to its cellular carrier licensees in the United States, and may also
include, at CTS's discretion, any minor modification, enhancement, or
improvement to the Licensed Programs.

               1.19 "Market Purchase Agreement" means:  (i) the agreement
between CTS and Customer or a Customer Affiliate specifying the pricing, sizing,
configuration, and Customer's or Customer Affiliate's election of available
options for the initial configuration of a System; (ii) all amendments,
supplements, and addenda which may be made to such agreement by mutual agreement
of the parties; and (iii) all Purchase Orders issued under such agreement and
accepted by CTS as described in Subsection 4.2, below.  Such agreement shall be
based on the CTS standard form Market Purchase Agreement (as the same may be
reasonably modified or updated from time to time by CTS with notice to
Customer).

               1.20 "New Release" means any computer program or portion thereof
which involves any modification, enhancement, or improvement to any Licensed
Programs that is:  (i) made generally commercially available by CTS to its
cellular carrier licensees in the United States; (ii) identified by CTS as
either a "major" or "minor" new release; and (iii) not merely a Maintenance
Release.

               1.21 "Nondisclosure Agreement" means, collectively, the following
agreements:  (i) that certain Nondisclosure Agreement dated as of August 29,
1995 between CTS and GTE Services Corp., GTE Mobilnet of California Limited
Partnership, and GTE Mobilnet of Santa Barbara Limited Partnership; (ii) each
agreement executed by a Customer Affiliate in which the Customer Affiliate
agrees to be bound by the provisions of the Nondisclosure Agreement described in
clause (i) above; (iii) any additional Nondisclosure Agreement between CTS and a
Customer Affiliate; and (iv) any amendments and supplements which may be made to
any of the foregoing agreements from time to time by mutual agreement of the
parties.  A copy of the Nondisclosure Agreement, as supplemented, is attached
hereto as SCHEDULE H.

               1.22 "Purchase Order" means a written purchase order provided by
Customer to CTS in accordance with Subsection 4.2, below.

               1.23 "Regional Processor Complex" means each Customer location at
which regional processors for a System are installed or to be installed in
accordance with this Agreement and the applicable Market Purchase Agreement.

               1.24 "Roaming Service Agreement" means that certain Service
Agreement for Real-Time Prevention of Roaming Cloning Fraud dated as of the date
of this Agreement between CTS and Customer, together with all amendments and
supplements which may be made thereto from time to time by mutual agreement of
the parties.

               1.25 "Specifications" means the specifications for a System as
set forth in the attached SCHEDULE D.

               1.26 "Support Services Agreement" means that certain Support
Services Agreement dated as of the date of this Agreement between CTS and
Customer, together with all amendments and supplements which may be made thereto
from time to time by mutual agreement of the parties.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 3


               1.27 "System" shall mean the combination of the Hardware and
Licensed Programs configured and installed for use by Customer within a
designated Licensed Market in accordance with the terms of this Agreement and an
applicable Market Purchase Agreement.

               1.28 "Third Party" means any person or entity other than CTS,
Customer, or a Customer Affiliate.

               1.29 "Third-Party Software" means the following with respect to a
given System:  (i) the computer programs described in the applicable Market
Purchase Agreement which are licensed to CTS by Third Parties and which CTS
sublicenses to Customer, in object code form only, as part of the Licensed
Programs, but for which CTS has no source code rights; and (ii) any additional
software, data tables, and programs as CTS and Customer may, from time to time,
agree in writing to add to such System as Third-Party Software.

          2.   LICENSE OF SOFTWARE.

               2.1  GRANT OF LICENSE.  Subject to the terms of this 
Agreement, CTS hereby grants to Customer a non-exclusive, non-transferable 
license (the "License") to use the Licensed Programs and Documentation for 
the purpose of operating a System for its intended use, as described in the 
Specifications, within each Licensed Market.  The term of the License granted 
above shall be [*] Licensed Programs and Documentation licensed and furnished 
hereunder for the purpose of operating Systems installed prior to the 
expiration or termination of this Agreement, subject to the terms of 
Subsection 14.3, below.

               2.2  LICENSE LIMITATIONS.

                    2.2.1  The License sets forth the entirety of Customer's 
rights in connection with the Licensed Programs, Documentation, and all 
Intellectual Property Rights in connection with the Licensed Programs and 
Documentation.  Accordingly, Customer shall not:  (i) use the Licensed 
Programs or Documentation for any purpose other than as expressly set forth 
in Subsection 2.1, above; or (ii) permit any Third Party to use or have 
access to any Licensed Programs or Documentation without the express prior 
written approval of CTS (except for Customer's representatives who are 
authorized by Customer to use Licensed Programs and Documentation in 
accordance with this Agreement and for whom Customer is responsible under 
Subsection 10.2, below).

                    2.2.2  Without limiting the generality of the foregoing, 
Customer shall not directly or indirectly do any of the following (except as 
expressly set forth in this Agreement or other written agreement between CTS 
and Customer):  (i) sublicense any rights under the License; (ii) print or 
copy the Licensed Programs, other than such number of copies as authorized by 
CTS in the Documentation for use solely by Customer in accordance with this 
Agreement; (iii) print or copy the Documentation, other than copies for use 
solely by Customer in accordance with this Agreement and subject to the 
Nondisclosure Agreement; (iv) modify or prepare derivative works of the 
Licensed Programs or Documentation; (v) reverse engineer, decompile, 
disassemble, or otherwise create, or attempt to create, or assist others to 
create, the source code form of any Licensed Programs or a product 
functionally equivalent to the System or any Licensed Programs, unless 
created without the use of any Licensed Programs or other Confidential 
Information of CTS; or (vi) remove, obscure, or alter any Intellectual 
Property Right or confidentiality notices or legends appearing in or on any 
Licensed Programs or Documentation.  In addition, with respect to the notices 
and legends described above, Customer shall:  (a) ensure that each copy or 
reproduction of all or any portion of the Licensed Programs or Documentation 
includes all such notices and legends; and (b) upon CTS's reasonable prior 
written 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 4


notice, provide CTS with reasonable access to Customer's records and 
facilities for the limited purpose of auditing and verifying Customer's 
compliance with the terms of this Subsection 2.2.2.

               2.3  NEW RELEASES, MAINTENANCE RELEASES, AND CUSTOMIZATIONS.

                    2.3.1  NEW RELEASES.  After the initial installation of a 
System, CTS will provide all New Releases for such System to Customer [*], so 
long as Customer continuously purchases for such System the software 
subscription services described in the Support Services Agreement and 
Customer is not in breach or default under this Agreement or the Support 
Services Agreement.  Otherwise, CTS, in its discretion, may provide New 
Releases for such System to Customer on such terms and conditions and for 
such Fees as the parties may mutually agree to in writing.  The parties 
acknowledge that New Releases may require the purchase of new or additional 
hardware or software.

                    2.3.2  MAINTENANCE RELEASES.  After the initial 
installation of a System within a given Licensed Market, CTS will provide all 
Maintenance Releases for such initial System to Customer [*], so long as 
Customer continuously purchases for such System the basic support services 
offered pursuant to the Support Services Agreement and Customer is not in 
breach or default under this Agreement or the Support Services Agreement.  
Otherwise, CTS, in its discretion, may provide Maintenance Releases for such 
System to Customer on such terms and conditions and for such Fees as the 
parties may mutually agree to in writing.

                    2.3.3  CUSTOMIZATIONS.  Customer may, from time to time, 
wish to have certain features of the Licensed Programs customized to its 
specifications.  CTS shall have the exclusive right to make and deliver such 
Customizations.  All Customizations will be performed pursuant to one or more 
separate, written agreements between CTS and Customer, which shall specify 
the deliverables, milestones, compensation, confidentiality requirements, use 
restrictions, and other terms, conditions, and procedures as CTS and Customer 
may mutually agree to with respect to such Customizations.

          3.   SUPPLY OF HARDWARE.

               3.1  FROM CTS.  Subject to the terms of this Agreement, CTS 
hereby agrees to sell, and Customer hereby agrees to buy, the Hardware 
described in the applicable Market Purchase Agreement for a given System in 
such quantities as CTS and Customer agree are necessary to operate such 
System.

               3.2  FROM THIRD PARTIES.  Notwithstanding Subsection 3.1, 
above, Customer may purchase quantities of the CTS-certified Hardware 
specified in the attached SCHEDULE B either from CTS or Third Parties 
approved in advance and in writing by CTS, subject to the terms of this 
Agreement.  Certain CTS-certified Hardware purchased from Third Parties will 
be subject to an integration Fee as specified in the attached SCHEDULE A.  
CTS may, from time to time, update the list of CTS-certified Hardware 
specified in SCHEDULE B with written notice to Customer.  Except as 
specifically set forth herein, CTS shall have no liability with respect to 
any Hardware components supplied by any person or entity other than CTS.

          4.   SYSTEM DEPLOYMENTS.

               4.1  COMMITMENTS FOR SYSTEM DEPLOYMENTS.  As partial 
consideration for [*] offered by CTS, as set forth in the [*], Customer 
hereby commits to purchase from CTS such quantities of Components such that 
the aggregate size of all Systems within [*] shall be at least [*].  If 
Customer does not comply with the foregoing commitments within the 
corresponding time period described above, 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 5


then CTS may, at its election and upon written notice to Customer, [*] 
granted by CTS to Customer with respect to any order of CTS products or 
services place after the date that Customer fails to comply with this 
Subsection.

               4.2  INITIAL SYSTEM DEPLOYMENTS; APPLICATION TO CUSTOMER 
AFFILIATES.   The parties agree that the initial configuration of a System 
will be deployed for commercial use pursuant to the terms and conditions of 
this Agreement and a Market Purchase Agreement.  This Agreement anticipates 
the future execution of Market Purchase Agreement(s) for a given System by 
CTS and either Customer or Customer Affiliates.  Each Market Purchase 
Agreement must be executed by an authorized representative of Customer (or 
the applicable Customer Affiliate) and an officer of CTS at the vice 
president level or higher.  Each Market Purchase Agreement executed by a 
Customer Affiliate shall incorporate this Agreement by reference and include 
a statement that the Customer Affiliate acknowledges and agrees to be bound 
by the terms and conditions of this Agreement.  For each Market Purchase 
Agreement executed by CTS and a Customer Affiliate and all transactions 
thereunder between CTS and such Customer Affiliate:  (i) all rights and 
obligations of "Customer" under this Agreement, as it applies to such Market 
Purchase Agreement and related transactions, shall be deemed to be the rights 
and obligations of the Customer Affiliate; and (ii) Customer and such 
Customer Affiliate shall be jointly and severally liable for the obligations 
of "Customer" under this Agreement, as it applies to such Market Purchase 
Agreement and related transactions.

               4.3  ADDITIONAL ORDERS.  After execution of the Market 
Purchase Agreement for a given System, Customer or the applicable Customer 
Affiliate may order additional quantities of Components or additional 
services by delivering one or more written Purchase Orders to CTS.  Each 
Purchase Order shall contain: (i) the date and number of the Purchase Order; 
(ii) the type, quantity, and price of each item ordered; (iii) the requested 
date of delivery or performance; (iv) the express incorporation by reference 
of the provisions of this Agreement and the applicable Market Purchase 
Agreement; and (v) any other mutually acceptable information with respect to 
such order.  All Purchase Orders are subject to acceptance by CTS, which 
shall be evidenced by a written notice stating that CTS accepts the Purchase 
Order or by CTS's delivery or performance of the requested Components or 
services.  Upon such acceptance, the Purchase Order shall become a part of 
the Market Purchase Agreement referenced in the Purchase Order.

               4.4  GENERAL TERMS.  Each System deployment shall:  (i) 
consist of the Components identified in the applicable Market Purchase 
Agreement or CTS-accepted Purchase Order; (ii) be installed at the Customer 
Facilities and in accordance with the applicable Implementation Schedule; 
(iii) be supported pursuant to the support services options selected by 
Customer in the applicable Market Purchase Agreement or CTS-accepted Purchase 
Order; (iv) be subject to the Fees and payment terms set forth in Section 9, 
below, and in the attached SCHEDULE A; and (v) be subject to acceptance 
testing in accordance with Section 7, below, and the applicable terms of the 
Acceptance Test Plan set forth in the attached SCHEDULE E.

               4.5  GOVERNING TERMS.  The provisions of this Agreement, 
Support Services Agreement, and Roaming Service Agreement shall govern and 
apply to all Market Purchase Agreements and Purchase Orders and to the 
provision of all Components and related services by CTS.  In no event shall 
any terms or conditions of any Purchase Order or other document alter or 
amend any provision of this Agreement, Support Services Agreement, or Roaming 
Service Agreement, or otherwise control, unless CTS and Customer (or the 
applicable Customer Affiliate) both specify in writing that such terms or 
conditions shall control.

          5.   DELIVERY AND INSTALLATION; CHANGES AFFECTING A SYSTEM.


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 6


               5.1  DELIVERY.

                    5.1.1  SHIPMENT.  Components to be delivered by CTS 
hereunder or under a Market Purchase Agreement will be shipped F.O.B. origin 
at CTS's facilities in Seattle, Washington U.S.A. or at such other locations 
as CTS may specify from time to time.  Such Components will be delivered in 
accordance with the terms of this Agreement, the applicable Market Purchase 
Agreement, and on an Implementation Schedule agreed upon by both CTS and 
Customer.  CTS reserves the right to make partial shipments and to make 
shipments at times convenient to CTS; PROVIDED, that in each case CTS shall 
meet the applicable Implementation Schedule in all material respects except 
as otherwise provided under this Agreement or any other written agreement 
between CTS and Customer.

                    5.1.2  TITLE.  Title to Hardware purchased from CTS shall 
pass to Customer upon CTS's delivery thereof to a freight carrier at CTS's 
facilities in Seattle, Washington U.S.A. or at such other locations as CTS 
may specify from time to time.  

                    5.1.3  INSURANCE, SHIPPING CHARGES, AND RISK OF LOSS.  
All Fees are F.O.B. at CTS's facilities in Seattle, Washington  U.S.A.  In 
addition to the Fees described in Section 9, below, and in the attached 
SCHEDULE A, Customer shall pay all insurance, freight, brokerage, and 
handling charges associated with all shipments of Components.  Customer shall 
insure the contents of such shipments against damage and risk of loss during 
shipment and thereafter.  CTS shall assume no liability in connection with 
such shipments; PROVIDED, HOWEVER, that CTS shall take directions from 
Customer and otherwise assist Customer in coordinating such shipments.  In 
the absence of specific written instructions from Customer:  (i) CTS shall 
select the freight carrier for shipments from CTS, but such freight carrier 
shall not be construed as CTS's agent; and (ii) CTS shall specify "freight 
collect" as Customer's method of payment.

               5.2  INSTALLATION AND READINESS OF CUSTOMER FACILITIES.

                    5.2.1  TECHNICAL MANAGERS - OVERALL COORDINATION.  
Customer and CTS shall each designate and provide the other party with the 
name, address, and telephone number of one (1) primary and one (1) back up 
technical manager for overall coordination between Customer and CTS with 
respect to the installation and acceptance of Components for Systems.  The 
initial technical managers of Customer and CTS for such overall coordination 
are identified in the attached SCHEDULE G.  Each party shall have the right 
to replace such technical managers by providing notice of such replacement to 
the other party.

                    5.2.2  TECHNICAL MANAGERS-MARKET COORDINATION.  Customer 
and CTS shall each designate and provide the other party with the name, 
address, and telephone number of one (1) primary and one (1) back up 
technical manager for overall coordination between Customer and CTS with 
respect to the installation and acceptance of Components for a System within 
a given Licensed Market.  The initial technical managers of Customer and CTS 
for such market level coordination shall be identified in the applicable 
Market Purchase Agreement.  Each party shall have the right to replace such 
technical managers by providing notice of such replacement to the other party.

                    5.2.3  INSTALLATION.  For each installation of Components 
at Regional Processor Complex, CTS will perform the installation, subject to 
the terms and conditions of this Agreement and the Fees set forth in SCHEDULE 
A.  For each installation of Components at a Cell Site, Customer, at its 
option, may perform the installation itself or request that the installation 
be performed by CTS, subject to the terms and conditions of this Agreement 
and the Fees set forth in SCHEDULE A.  Prior to any installation by Customer 
or any mutually acceptable Third Party, the installers for such entities must 
first complete CTS training for such installation as set forth in the 
attached SCHEDULE F.  


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 7


CTS and Customer agree to use commercially reasonable efforts to effect 
installations of Components in accordance with the applicable Implementation 
Schedule.  

                    5.2.4  READINESS OF CUSTOMER FACILITIES. Customer shall 
maintain Customer Facilities in compliance with the Infrastructure and 
Environmental Requirements at all times during the term of this Agreement.  
Customer shall certify compliance with the Infrastructure and Environmental 
Requirements with respect to each Customer Facility at the times specified in 
the applicable Implementation Schedule.  If, upon inspection, CTS determines 
that the Infrastructure and Environmental Requirements are not met,  CTS will 
promptly notify Customer, and Customer shall cure the Infrastructure and 
Environmental Requirements defects within [*]of receipt of CTS's notice.  If, 
in the reasonable opinion of CTS, all Infrastructure and Environmental 
Requirements are not met within such [*], then CTS shall be entitled to 
reschedule the installation and any other affected items on the 
Implementation Schedule as CTS deems reasonable.  If any delay in meeting the 
Infrastructure and Environmental Requirements causes the CTS installers or 
other personnel to remain longer than the scheduled installation days, or to 
make additional trips to Customer Facilities, then, in addition to the Fees 
specified in SCHEDULE A, Customer shall pay all additional travel and lodging 
expenses plus CTS's then-current day charge for each day that each installer 
or other personnel is required to be at the installation site beyond the 
scheduled number of days.

               5.3  CHANGES TO CUSTOMER EQUIPMENT OR SOFTWARE.

                    5.3.1  CHANGES IN GENERAL.  If any third-party equipment 
or software is added to Customer's cellular network after the installation of 
a System, and such additional equipment or software has an adverse effect on 
such System, then CTS will use commercially reasonable efforts to make any 
modifications required to the affected System due to such equipment or 
software on such terms and conditions and for such additional fees as the 
parties may mutually agree to in writing.  Except as the parties otherwise 
expressly agree to in writing, the performance warranties set forth in 
Section 11, below, will not apply if any Components are adversely affected by 
any of Customer's equipment or software installed as part of its cellular 
network.

                    5.3.2  REQUIRED CHANGE IN [*].  The parties acknowledge 
that all or part Customer's cellular networks in the Licensed Markets 
currently [*] as part of such cellular networks.  For that reason, Customer 
may elect, under this Agreement, to [*] offered by CTS under SCHEDULE A which 
is [*].  The parties agree that, if Customer [*] under this Agreement, and if 
[*] such that, within [*] of this Agreement, the [*] is no longer [*], then, 
for each affected System, Customer will [*] a mutually agreeable [*] for such 
affected System [*] for the Fees applicable to such [*] described in the 
attached SCHEDULE A, and CTS will [*]to Customer equal to [*] described in 
the attached SCHEDULE A [*] for such [*], in exchange for [*] of such [*] to 
CTS.  Customer agrees to pay CTS for any services performed by CTS in 
connection with [*] at the then-current billing rate of the CTS personnel 
performing such services.

               5.4  MAINTENANCE OR RELOCATION OF COMPONENTS.  Customer may 
repair, replace, or relocate Components of a System only to the extent 
expressly authorized by, and performed in accordance with, the terms of this 
Agreement, the Support Agreement, and CTS-approved policies and procedures.  
The parties agree that any relocation of Components will require mutual 
cooperation between the parties.  Accordingly, Customer will notify CTS of 
each relocation at least [*] before commencement of the relocation and, 
during such relocation, both parties will coordinate as reasonably necessary 
to complete the relocation.  The performance warranties set forth in Section 
11, below, shall not apply to:  (i) any Component during the relocation of 
such Component and until such Component is 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 8


re-connected to the System and operating in proper working order; and (ii) 
any System to the extent that any action by Customer in violation of this 
Subsection adversely affects such System.

          6.   RESCHEDULING.

               6.1  RESCHEDULING BY WRITTEN NOTICE.  CTS and Customer will 
prepare mutually acceptable Implementation Schedules and the parties will 
comply with such Implementation Schedules in all material respects.  The 
parties agree that rescheduling of any material item on an Implementation 
Schedule will require mutual cooperation between the parties.  Accordingly, 
except as the parties expressly agree to in writing or as otherwise provided 
herein, any modification or rescheduling of any material item on an 
Implementation Schedule will require the approval of both parties, which 
approval will not be unreasonably withheld.  If in CTS's opinion any 
rescheduling affects other scheduled shipments or scheduled items on an 
Implementation Schedule, CTS may reschedule such other shipments or items as 
is reasonable given the circumstances.  Customer shall pay CTS's 
out-of-pocket costs and expenses attributable to any rescheduling by or due 
to the fault of Customer.  CTS shall pay Customer's out-of-pocket costs and 
expenses attributable to any rescheduling by or due to the fault of CTS.

               6.2  DELAYS BEYOND REASONABLE CONTROL.  If any Component 
shipped from CTS is lost or damaged during shipment, CTS will use reasonable 
efforts to reschedule a replacement shipment to meet the applicable 
Implementation Schedule.  Neither party shall be liable for delays in any 
Implementation Schedule or any other delivery, shipment, installation, or 
acceptance testing of Components due to delays beyond its reasonable control. 
 In the event of any such delay, all scheduled items on any Implementation 
Schedule and other deliveries, shipments, installations, and acceptance 
testing of Components affected by such delay shall be extended for a period 
equal to the period of the delay, except as the parties otherwise expressly 
agree to in writing.  If any delivery of Components material to a System is 
delayed in excess of [*] due to no fault of a party, then the exclusive 
remedy of the other party with respect to such delay shall be the right to 
cancel any outstanding order affected by such delay.

          7.   ACCEPTANCE.

               7.1  ACCEPTANCE TESTING FOR INITIAL SYSTEMS.  CTS and Customer 
will perform acceptance testing, in accordance with the applicable terms of 
the Acceptance Test Plan, on each System on the following initial 
configuration of such System (an "Initial System"):  (a) if Customer's 
initial order for the System requests a System deployment of Components [*], 
then the Initial System shall be the configuration of the System as ordered; 
or (b) if Customer's initial order for the System requests a System 
deployment of Components [*], then the Initial System shall be the [*] of the 
System ordered.  Acceptance testing will commence upon installation of the 
Initial  System (the "Start Date").  Thereafter, Customer will conduct 
acceptance tests in accordance with the applicable terms of the Acceptance 
Test Plan for a period not to exceed [*] from the Start Date (the "Acceptance 
Testing Period"). Upon the conclusion of the Acceptance Testing Period, 
Customer shall complete, execute, and deliver to CTS a written notice, which 
shall state with specificity whether the Initial System is accepted or, if 
not, to what extent the Initial System does not materially perform in 
accordance with the applicable terms of the Acceptance Test Plan.  The 
Initial System will be deemed accepted by Customer if:  (i) the written 
notice completed, executed, and delivered by Customer does not specify any 
such non-conformities; (ii) Customer does not complete, execute, and deliver 
to CTS a written notice specifying any such non-conformities within [*] after 
the expiration of the Acceptance Testing Period; (iii) Customer commences use 
of the System in connection with Customer's cellular network by collecting 
radio frequency "fingerprints" and interdicting counterfeit call attempts; or 
(iv) in the event of a dispute 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 9


as to the performance of the System, an executive panel of the parties or an 
arbitration panel concludes that the System is materially performing in 
accordance with the applicable terms of the Acceptance Test Plan, as provided 
in Subsection 7.4, below.

               7.2  CORRECTION OF NON-CONFORMITIES.

                    7.2.1  CORRECTION IN GENERAL.  Except as set forth in 
Subsection 7.2.2, below, if the written notice described in Subsection 7.1, 
above, specifies aspects of an Initial System's performance which do not 
materially perform in accordance with the applicable terms of the Acceptance 
Test Plan (and if the Initial System is not otherwise deemed accepted by 
Customer under Subsection 7.1(i), (ii) or (iv), above), then, within ten (10) 
days after CTS's receipt of such written notice, CTS will submit to Customer 
a written action plan, which will outline CTS's proposed course of action for 
resolution of the non-conformities and a timetable for re-testing the Initial 
System in accordance with Subsection 7.1, above.  Within ten (10) days after 
CTS's submission of the proposed action plan, the parties will agree on a 
final action plan, and CTS will thereafter work diligently to implement such 
final action plan.  Customer will make available to CTS all resources and 
facilities reasonably necessary to implement the final action plan, and will 
fully cooperate with CTS's efforts.  Upon the conclusion of all re-testing 
specified in the final action plan, the provisions of Subsection 7.1, above, 
shall apply to determine whether the Initial System is deemed accepted by 
Customer after such re-testing.  If CTS is unable to correct the 
non-conformities within the timetables and re-testing periods described in 
the final action plan so that the Initial System materially performs in 
accordance with the applicable terms of the Acceptance Test Plan, then 
Customer may, at its election, either:  (i) terminate the License and the 
obligations of the parties hereunder as it applies to such Initial System by 
providing CTS with written notice of termination within thirty (30) days 
after expiration of the timetables and re-testing periods described in the 
final action plan; or (ii) accept the Initial System and, if the 
non-conformity is due to the Initial System's failure to [*].

                    7.2.2  [*] DURING CORRECTION.  Notwithstanding anything 
to the contrary, if the written notice described in Subsection 7.1, above, 
specifies aspects of an Initial System's [*] in accordance with the [*] (and 
if the Initial System is [*] by virtue of Subsection [*], above), then the 
procedures described in Subsection 7.2.1, above, shall apply for the 
correction of such non-conformities, EXCEPT THAT, if CTS does not correct 
such non-conformities within the designated timetables and re-test periods, 
[*].

               7.3  APPLICATION TO SUBSEQUENT INSTALLATIONS.  The provisions 
of this Section 7 shall also apply to the acceptance of Components installed 
on a System after the Initial System, EXCEPT THAT:  (i) CTS and Customer 
shall only test the newly-installed Components in accordance with the 
applicable terms of the Acceptance Test Plan; (ii) Customer may reject such 
newly-installed Components in the manner described in Subsection 7.1; (iii) 
CTS shall correct any non-conformities in the manner described in Subsection 
7.2; (iv) if CTS does not correct such non-conformities within the designated 
timetables and re-test periods, then Customer may terminate the obligations 
of the parties only with respect to such newly-installed Components[*].

               7.4  RESOLUTION OF DISPUTES OVER ACCEPTANCE.

                    7.4.1  The parties agree to settle any dispute arising 
out of the acceptance testing provisions described in this Section 7 through 
consultation and negotiation in good faith and in the spirit of mutual 
cooperation.  Accordingly, if, after the conclusion of any Acceptance Testing 
Period or re-testing period described in this Section 7, the parties dispute 
whether the initial System is materially performing in accordance with the 
applicable Acceptance Test Plan, the parties agree to meet to try to resolve 
the dispute within fourteen (14) days after one party delivers a written 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 10


request for a meeting to the other party.  Such meeting shall be attended by 
individuals with decision-making authority to attempt, in good faith, to 
negotiate a resolution of the dispute prior to pursuing other available 
remedies.  If, within fourteen (14) days after such meeting, the parties have 
not succeeded in negotiating a resolution of the dispute, then either party 
may commence arbitration under Subsection 7.4.2, below, by delivering a 
written demand for arbitration to the other party.

                    7.4.2  If either party commences arbitration in the 
manner described above, the dispute will be subjected to binding arbitration 
before a panel of three (3) independent arbitrators.  Such arbitration shall 
be held in [*], in accordance with the then-current Commercial Arbitration 
Rules of the American Arbitration Association, as modified to be consistent 
with this Subsection.  Such arbitrators shall be selected by mutual agreement 
of the parties, or failing such agreement within fourteen (14) days after 
delivery of the original written demand for arbitration, each party shall 
select one arbitrator and the two selected arbitrators shall mutually agree 
upon the selection of a third arbitrator within thirty (30) days from 
delivery of the original written demand for arbitration.  The arbitrators 
shall have the authority to require the submission (at a hearing or 
otherwise) of such documents, information, testimony, and other items as the 
arbitrators may deem necessary to make a fair and reasonable decision. Within 
forty-five (45) days after the appointment of the arbitrators, the 
arbitrators will render a written decision.  The arbitrators shall be limited 
to addressing the issues in dispute arising out of the acceptance testing 
provisions described in this Section 7 and interpreting the applicable 
provisions of this Agreement and the applicable Market Purchase Agreement in 
connection with such issues. The parties agree that the System shall be 
deemed accepted for purposes of this Agreement if the arbitrators conclude 
that the System is materially performing in accordance with the applicable 
Acceptance Test Plan.  A judgment upon the award rendered by the arbitrators 
may be entered in any court having jurisdiction thereof and shall constitute 
a final adjudication of all matters submitted to arbitration.  The 
arbitrators shall, as part of their written decision, award attorneys' fees 
and related expenses in accordance with Subsection 16.11, below.  The costs 
of all arbitration services, however, shall be shared equally by the parties.

          8.   TRAINING, SUPPORT, AND OTHER SERVICES.

               8.1  TRAINING SERVICES.  CTS will provide the training classes 
set forth in the attached SCHEDULE F for Customer for the applicable Fees 
described in SCHEDULE A and in accordance with the applicable Market Purchase 
Agreement and Implementation Schedule.  Upon request, CTS will provide 
additional training at such times and locations, upon such terms and 
conditions, and for such Fees as the parties may mutually agree to in writing.

               8.2  SUPPORT SERVICES.  Subject to the terms of this 
Agreement, CTS will offer software and hardware support services for each 
System, pursuant to the terms set forth in the Support Services Agreement.  
Customer will select support for each System as set forth in the Support 
Services Agreement.  Such selection will be made as part of the applicable 
Market Purchase Agreement for such System.

               8.3  SOURCE CODE.  CTS will deposit into escrow and maintain 
throughout the term of the License one (1) copy of the source code for the 
CTS-owned Licensed Programs (I.E., only Licensed Programs to which CTS has 
source code rights) in Seattle, Washington, pursuant to CTS's standard form 
Source Code Escrow Agreement among CTS, Customer, and an escrow holder 
approved by CTS and Customer.

               8.4  ROAMING FRAUD PREVENTION SERVICES.  Subject to the terms 
of this Agreement, CTS will offer services to Customer for the real-time 
prevention of cellular roaming cloning fraud, pursuant to the terms set forth 
in the Roaming Service Agreement.


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 11


               8.5  [*]

                    8.5.1 [*]

                    8.5.2 [*]

                    8.5.3 [*]

               8.6  [*]

          9.   COMPENSATION.

               9.1  FEES.  In consideration for the rights, warranties, and 
covenants provided by CTS hereunder, Customer hereby agrees to pay the Fees 
specified in the attached SCHEDULE A when due as set forth in such Schedule.

               9.2  STANDARD TERMS.

                    9.2.1  In addition to the Fees and other charges required 
to be paid by Customer to CTS hereunder, Customer shall pay (or, at CTS's 
election, reimburse CTS) for all federal, state, and local taxes and 
withholding requirements in connection with the transactions contemplated by 
this Agreement and each Market Purchase Agreement (excluding taxes based on 
CTS's net income or its authority to do business within a given state).  Such 
taxes specifically include, without limitation:  (i) excise, sales, use and 
royalty taxes, withholding taxes and related requirements, value-added taxes, 
all similar taxes and charges now in effect or enacted in the future; and 
(ii) all interest and penalties which may result from the failure to pay any 
of such taxes or charges.  If CTS receives any notice of deficiency with 
respect to any such taxes or charges, CTS will promptly deliver notice 
thereof to Customer so that Customer may have a reasonable opportunity to 
contest such tax and any related interest and penalties.

                    9.2.2  Except as otherwise expressly set forth in this 
Agreement or any Schedule hereto:  (i) CTS will invoice Customer for amounts 
to be paid hereunder, and Customer will pay such invoice [*] after receipt of 
the applicable invoice; (ii) Customer shall not be entitled to the return or 
reimbursement of any compensation paid to CTS pursuant to this Agreement; and 
(iii) all Fees and other charges hereunder shall be paid to CTS in 
immediately available funds in United States Dollars.

                    9.2.3  If Customer fails to pay any sum when due and 
payable, Customer shall pay interest at a rate of one and one-half percent 
(1.5%) per month, accruing from the due date of such payment until paid, or 
the maximum rate permitted by applicable law if lower.  If CTS is entitled to 
the sums sought to be collected, it shall also be entitled to receive all 
costs expended by CTS in collecting those sums, including without limitation 
reasonable attorneys' fees.

          10.  PROPRIETARY RIGHTS.

               10.1 INTELLECTUAL PROPERTY RIGHTS.

                    10.1.1  The License shall not transfer any title to or 
ownership in the Licensed Programs or Documentation, or any Intellectual 
Property Rights in connection with the Licensed Programs and/or 
Documentation, from CTS to Customer. Accordingly, subject only to the 
License, all right, title, and interest in and to the Licensed Programs and 
Documentation, and all Intellectual Property Rights in connection with the 
Licensed Programs and/or Documentation, are and 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 12


shall at all times remain the exclusive property of CTS or its licensor(s).  
CTS may use, sell, assign, transfer and license rights relating to the 
Licensed Programs and/or Documentation to any Third Party for any purpose 
free from any claim of Customer.

                    10.1.2  CTS and Customer each own certain trade names, 
logos, trademarks, and service marks used in identifying and marketing their 
respective technology, products, and services (collectively, "Trademarks").  
Each party recognizes and consents for all purposes that all Trademarks of 
the other party, whether or not registered, constitute the exclusive property 
of such other party and will not be used except as approved by such other 
party in advance and in writing, nor shall either party use any confusingly 
similar Trademarks of the other party.  Nothing contained in this Agreement 
shall be construed as conferring any additional rights upon either party to 
use in advertising, publicity, or other promotional activities any Trademark 
of the other party.

               10.2 CONFIDENTIAL INFORMATION.  The parties acknowledge that 
each party may disclose additional Confidential Information to the other 
party or its representatives in furtherance of the transactions contemplated 
by this Agreement. Therefore, notwithstanding anything to the contrary, the 
Nondisclosure Agreement is hereby amended such that all Confidential 
Information of each party disclosed to the other party or any of its 
representatives at any time during the term of this Agreement shall be 
considered Confidential Information of the disclosing party and shall be 
subject to the operative provisions of the Nondisclosure Agreement, 
regardless of the stated term identified in the Nondisclosure Agreement.  
Each party hereby agrees to ensure that each of its representatives who 
receives Confidential Information of the other party complies with the terms 
of the Nondisclosure Agreement, as amended hereby, to the same extent as if 
such representative had executed the Nondisclosure Agreement, as amended.  
All Confidential Information of each party is and shall at all times remain 
the exclusive property of each party.  For purposes of this Subsection, 
"representatives" means the officers, directors, employees, agents, and 
affiliates of a party.

          11.  WARRANTIES.

               11.1 INTELLECTUAL PROPERTY RIGHTS.  CTS hereby warrants to 
Customer that, subject to the provisions of Subsection 12.1.3, below, each 
System furnished by CTS hereunder, if used by Customer in accordance with the 
terms of this Agreement, is free of any valid claim by a Third Party that the 
System infringes an existing United States Intellectual Property Right of 
such Third Party.  Customer's exclusive remedy for breach of the warranty set 
forth in this Subsection 11.1 is set forth in Subsection 12.1, below.

               11.2 SOFTWARE PERFORMANCE.  For each System, CTS hereby 
warrants to Customer that the Licensed Programs (excluding the Third-Party 
Software), when used in conjunction with the Hardware necessary for operation 
of such System and with Customer's cellular network operating in a normal 
manner, and when all relevant Infrastructure and Environmental Requirements 
are satisfied, will materially perform in accordance with their 
Specifications for so long as Customer continuously purchases for such System 
the basic support services and software subscription services described in 
the Support Services Agreement.  Customer's exclusive remedy for breach of 
such warranty shall be correction by CTS, at no additional charge to 
Customer, of any errors or malfunctions in such Licensed Programs found not 
to be in compliance with such warranty, in accordance with the terms of the 
Support Services Agreement; PROVIDED, HOWEVER, that CTS shall have no 
obligation to make such corrections if Customer is in breach or default under 
this Agreement and is notified, in writing, of such breach or default, or if 
Customer fails to notify CTS in writing within a reasonable time of discovery 
of such errors or malfunctions.  If a correction of an error or malfunction 
is commercially impractical, CTS may provide Customer with a commercially 
reasonable circumvention of such error or malfunction. For


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 13


Third-Party Software supplied by CTS, CTS will pass through to Customer the 
warranties that CTS receives from its vendor for such Third-Party Software, 
to the extent that such vendor will honor such warranties.

               11.3 HARDWARE PERFORMANCE.  For each System, CTS hereby 
warrants to Customer that the CTS-proprietary Hardware purchased from CTS for 
installation in Cell Sites, when used in conjunction with the Licensed 
Programs necessary for operation of such System and with Customer's cellular 
network operating in a normal manner, and when all relevant Infrastructure 
and Environmental Requirements are satisfied, will materially perform in 
accordance with their Specifications for [*] from the date of acceptance of 
such Hardware by Customer.  Customer's exclusive remedy for breach of such 
warranty shall be either repair or replacement by CTS, at its expense and in 
its discretion, of any of such Hardware found not to be in compliance with 
such warranty, in accordance with the terms of the Support Services 
Agreement; PROVIDED, HOWEVER, that CTS shall have no obligation to repair or 
replace such Hardware if Customer is in breach or default under this 
Agreement or if Customer fails to promptly notify CTS in writing upon 
discovery of such errors or malfunctions.  For all other Hardware components 
supplied by CTS, CTS will pass through to Customer the warranties that CTS 
receives from its vendor for such Hardware components, to the extent that 
such vendor will honor such warranties.

               11.4 CALENDAR-RELATED DATE PROCESSING.

                    11.4.1  For purposes of this Subsection:  (i) 
"Calendar-Related" means date values based on the Gregorian calendar, as 
defined in Encyclopedia Britannica, 15th edition, 1982, page 602, and to all 
uses in any manner of those date values, including, without limitation, 
manipulations, calculations, conversions, comparisons, and presentations; 
(ii) "Date Data" means any Calendar-Related date values in the inclusive 
range January 1, 1985 through December 31, 2035, which the CTS-proprietary 
Licensed Programs use in any manner; and (iii) "System Date" means any 
Calendar-Related date values in the inclusive range January 1, 1985 through 
December 31, 2035 (including the natural transition between such values) 
which the CTS-proprietary Licensed Programs shall be able to use as the 
current date while operating.

                    11.4.2  CTS warrants that the CTS-proprietary Licensed 
Programs will not malfunction, will not cease to function, will not generate 
incorrect data, and will not produce incorrect results due to the processing 
by such Licensed Programs of Calendar-Related data, Date Data, or any System 
Date.  CTS further warrants that, in connection with providing 
Calendar-Related data to and accepting Calendar-Related data from other 
automated, computerized, and/or software systems and users via user 
interfaces, electronic interfaces, and data storage, the CTS-proprietary 
Licensed Programs represent date without ambiguity as to century.  In the 
event of a breach of this warranty, CTS agrees to promptly (but in no case 
later than 90 days of Customer's written notification to CTS of any failure 
of the CTS-proprietary Licensed Programs to correctly perform as required by 
this Subsection) remedy such breach at no additional charge to Customer by:  
(i) correcting the version of such Licensed Programs currently used by 
Customer so as to make them capable of properly performing as required by 
this Subsection; or (ii) providing replacement software for the affected 
Licensed Programs which is equivalent in function to such Licensed Programs 
and which properly performs as required by this Subsection.

               11.5 NO WARRANTIES OTHER THAN EXPRESS WRITTEN.  EXCEPT AS 
EXPRESSLY SET FORTH IN THIS SECTION 11, CTS MAKES NO REPRESENTATIONS, 
WARRANTIES, OR GUARANTIES OF ANY KIND (INCLUDING WITHOUT LIMITATION 
PERFORMANCE WARRANTIES), EITHER EXPRESS OR IMPLIED, ORAL OR WRITTEN, WITH 
RESPECT TO THE 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 14


SYSTEM, HARDWARE, LICENSED PROGRAMS, DOCUMENTATION, OR ANY OTHER ITEMS OR 
SERVICES COVERED BY OR FURNISHED UNDER THIS AGREEMENT, INCLUDING WITHOUT 
LIMITATION ANY IMPLIED WARRANTY (I) OF MERCHANTABILITY, (II) OF FITNESS FOR A 
PARTICULAR PURPOSE, OR (III) ARISING FROM COURSE OF PERFORMANCE, COURSE OF 
DEALING, OR USAGE OF TRADE.

          12.  INDEMNIFICATION.

               12.1 SYSTEM INFRINGEMENT.

                    12.1.1  CTS will defend, at its sole expense, any Third 
Party claim brought against Customer based on an infringement which, if 
proven, would result in a breach of the warranty set forth in Subsection 
11.1, above; PROVIDED, that:  (i) Customer promptly delivers written notice 
of such claim to CTS, together with copies of all related court documents 
involving such claim; and (ii) Customer provides CTS with full and complete 
information and reasonable assistance for the defense of such claim as 
reasonably requested by CTS.  CTS agrees to reimburse Customer for reasonable 
out-of-pocket expenses incurred by Customer in providing such CTS-requested 
assistance.  In addition, subject to the terms of this Agreement, CTS will 
indemnify and hold harmless Customer from and against any and all damages and 
costs awarded by final judgment against Customer as a result of such claim, 
or, if any compromise or settlement is made with respect to such claim, CTS 
will pay all amounts agreed to by CTS in settlement of the claim.  CTS shall 
have full and complete authority to defend and settle such claim.

                    12.1.2  If, in any proceeding involving a Third Party 
claim described in Subsection 12.1.1, above, a System is held to constitute 
an infringement of a Third Party's United States Intellectual Property Right 
and use of such System is enjoined, or if in CTS's opinion any such 
infringement is likely to occur, CTS, at its option and expense, may either:  
(i) obtain the right for Customer to continue use of the System by license, 
release from claim of infringement, or by other appropriate means; (ii) 
modify the System to make it non-infringing; (iii) replace the System with a 
non-infringing system of like functionality; or (iv) if election of either of 
the above clauses (i), (ii) or (iii) are impractical in CTS's reasonable 
judgment, after using reasonable efforts for a reasonable period of time 
under the circumstances, CTS may terminate this Agreement and the License 
granted herein with respect to such System by providing Customer with written 
notice of such termination.  If, pursuant to clause (iv) above, CTS 
terminates this Agreement and the License with respect to a System, then:  
(a) Customer shall, at CTS's request, either promptly return the System to 
CTS or destroy the same; and (b) Customer as its exclusive remedy shall be 
entitled to a refund equal to the License Fees and Hardware Fees described in 
SCHEDULE A which specifically pertain to such System and which Customer 
actually paid to CTS, which refund CTS may reduce by a reasonable sum for 
use, depreciation, and amortization.

                    12.1.3  Notwithstanding anything to the contrary, CTS 
shall have no liability under this Agreement for any claim which:  (i) 
pertains to a System which has been altered or modified without CTS's prior 
written approval, unless the use of an unaltered or unmodified version of the 
System is shown to constitute the infringement; (ii) use of the System in 
combination or conjunction with any item not furnished by CTS, unless the use 
of the System is shown to constitute the infringement when not used in 
combination or conjunction with the item not furnished by CTS; or (iii) 
identifies any Third-Party Software or Hardware (other than CTS-proprietary 
Hardware purchased from CTS for installation in Cell Sites) as forming the 
basis of such infringement.

               12.2 OTHER INDEMNIFICATION.


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 15


                    12.2.1  BY CUSTOMER.  Customer acknowledges that CTS has 
no control over the business activities of Customer, its cellular networks or 
other systems, the quality of telecommunications transmissions, or the 
content of the data transmitted.  Accordingly, Customer will defend, at its 
sole expense, any and all Third Party claims brought against CTS or any of 
its officers, directors, employees, agents, successors or assigns arising 
from the operation of the cellular networks or other business activities of 
Customer, except to the extent that any Third Party claim is based on:  (i) 
the subject matter described in Subsection 12.1, above; or (ii) Customer's 
use of the items furnished by CTS hereunder, so long as such use is in 
accordance with the terms of this Agreement and the Support Services 
Agreement.  In addition, subject to the terms of this Agreement, Customer 
will indemnify and hold harmless CTS and its officers, directors, employees, 
agents, successors and assigns from and against any and all damages and costs 
awarded by final judgment against any of such indemnified parties as a result 
of such claim, or, if any compromise or settlement is made with respect to 
such claim, Customer will pay all amounts agreed to by Customer in settlement 
of the claim.  Customer shall have full and complete authority to defend and 
settle such claim.

                    12.2.2  BY CTS.  CTS acknowledges that Customer has no 
control over the business activities of CTS. Accordingly, CTS will defend, at 
its sole expense, any and all Third Party claims brought against Customer or 
any of its officers, directors, employees, agents, successors or assigns 
arising from the operation of the business activities of CTS, except to the 
extent that any Third Party claim is based on the subject matter described in 
Subsection 12.2.1, above, or any other provision of this Agreement pursuant 
to which Customer is obligated to defend and indemnify CTS or any of its 
officers, directors, employees, agents, successors or assigns.  In addition, 
subject to the terms of this Agreement, CTS will indemnify and hold harmless 
Customer and its officers, directors, employees, agents, successors and 
assigns from and against any and all damages and costs awarded by final 
judgment against any of such indemnified parties as a result of such claim, 
or, if any compromise or settlement is made with respect to such claim, CTS 
will pay all amounts agreed to by CTS in settlement of the claim.  CTS shall 
have full and complete authority to defend and settle such claim.

                    12.2.3  NOTICE AND COOPERATION.  With respect to any 
claim described in this Subsection 12.2, the party seeking indemnification 
under this Subsection 12.2 (the "Indemnified Party") shall provide the party 
required to provide indemnification under this Subsection 12.2 (the 
"Indemnifying Party") with prompt written notice of such claim brought 
against the Indemnified Party, together with copies of all related court 
documents involving such claim.  The Indemnified Party's failure to provide 
timely notice to the Indemnifying Party of any such claim shall not relieve 
the Indemnifying Party from any liability under this Subsection 12.2 with 
respect to such claim, to the extent that the Indemnifying Party is not 
prejudiced by such failure.  The Indemnifying Party shall keep the 
Indemnified Party advised of the status or any such claim and of its defense 
and/or negotiation efforts.  The Indemnified Party shall provide the 
Indemnifying Party with such information and reasonable assistance for the 
defense of such claim as is reasonably requested by the Indemnifying Party.  
The Indemnifying Party agrees to reimburse the Indemnified Party for 
reasonable out-of-pocket expenses incurred by the Indemnified Party in 
providing such assistance requested by the Indemnifying Party.

          13.  PROSECUTION OF INFRINGEMENT CLAIMS.  Notwithstanding anything 
to the contrary, Customer shall promptly notify CTS in writing of any facts 
of which Customer is aware which might constitute an infringement by any 
Third Party of any of CTS's Intellectual Property Rights.  CTS shall have the 
exclusive right to take all actions, control all litigation or other 
proceedings, and negotiate and enter into all settlements with respect to any 
such infringement, as CTS deems necessary or appropriate to protect CTS's 
Intellectual Property Rights, except as CTS and Customer may otherwise agree 
to in writing.  Customer agrees to provide to CTS, at CTS's expense, full and 
complete information and assistance in connection with the prosecution of 
such infringement as reasonably requested by CTS.  Any 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 16


recovery of damages or attorneys' fees in connection with any such action, or 
in settlement of any such action, will belong entirely to CTS.  CTS will have 
no obligation to institute suit against any particular person or entity for 
infringement of any Intellectual Property Rights of CTS.

          14.  TERM AND TERMINATION.

               14.1 TERM.  The term of this Agreement commences on the date 
of this Agreement and will continue thereafter for an initial term of two (2) 
years.  This Agreement may be extended for a mutually agreeable renewal term, 
provided that Customer and CTS expressly agree to such extension in writing.  
All terms and conditions hereof shall remain in effect during any renewal 
term, except as the parties otherwise expressly agree to in writing.  
Notwithstanding the above, this Agreement shall terminate upon the occurrence 
of any of the events described in the termination provisions set forth below.

               14.2 TERMINATION.

                    14.2.1  MATERIAL BREACH AFTER NOTICE.  Except as 
otherwise set forth in this Agreement, upon material breach or default under 
this Agreement by any party (the "breaching party"), if the other party 
("non-breaching party") gives written notice of such breach or default and 
the same is not cured within thirty (30) days after delivery of such notice, 
then, without limitation of any other remedy available hereunder, the 
non-breaching party may terminate this Agreement by delivery of a notice of 
termination at any time thereafter before such breach or default has been 
cured; PROVIDED, that for any breach or default (other than a payment default 
or a default under Subsections 2.2 or 10.2) that is not reasonably 
susceptible of cure within thirty (30) days, the breaching party shall have 
such additional time, up to ninety (90) additional days, as is reasonably 
necessary to cure the default, so long as such party continuously and 
diligently pursues such cure.  The parties agree that the failure to make 
payments of Fees or other charges when due hereunder shall constitute a 
"material breach" of this Agreement.

                    14.2.2  IMMEDIATE TERMINATION.  Notwithstanding anything 
to the contrary, this Agreement and the License may be immediately terminated 
upon written notice:  (i) at the option of CTS in the event that Customer 
violates any of the provisions of Subsection 2.2 in any way without the prior 
written consent of CTS, and Customer fails to cure such violation within (3) 
days after CTS's delivery of notice of breach to Customer; or (ii) at the 
option of either party if the other party materially violates the 
Nondisclosure Agreement or any of the provisions of Subsection 10.2, and such 
other party fails to cure such violation in accordance with any applicable 
cure periods set forth in the Nondisclosure Agreement.

                    14.2.3  DISCRETIONARY TERMINATION.  Either party may, in 
its discretion, terminate this Agreement and the License at any time and for 
any reason by giving the other party at least sixty (60) days prior written 
notice of termination.

               14.3 EFFECT OF EXPIRATION OR TERMINATION.

                    14.3.1  Following the expiration or termination of this 
Agreement, Customer shall have [*] as provided under [*] with respect to the 
[*] as of the expiration or termination of this Agreement, [*] any of the 
following:  (i) if this Agreement is terminated pursuant to Subsections 
14.2.1 or 14.2.2 due to a breach or default by Customer, [*] upon termination 
of this Agreement; or (ii) if this Agreement expires, is terminated due to 
the events described in Subsection 14.2.3, or is terminated pursuant to 
Subsection 14.2.1 due to a breach or default by CTS, [*] breach or default by 
Customer under any of the survival terms described in Subsection 14.4, and 
the expiration of any applicable cure period with respect to such breach or 
default.


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 17


                    14.3.2  Upon the expiration or termination of this 
Agreement, Customer shall immediately cease use of the Confidential 
Information of CTS (excluding [*] in Customer's possession as of such 
expiration or termination, which Customer [*]pursuant to Subsection 14.3.1, 
above, for the sole purpose of [*]) and shall, at CTS's election, either:  
(i) return to CTS the original and all copies of the same, in whole or in 
part, in any form, including partial copies and modifications, and any 
related materials received from CTS, or (ii) furnish to CTS a certified 
executed document stating that the same has been destroyed.  Upon the 
termination of the License, Customer shall immediately return or destroy all 
copies of Licensed Programs and Documentation retained for use pursuant to 
Subsection 14.3.1, above, in accordance with the procedures set forth in this 
Subsection.

                    14.3.3  Upon the expiration or termination of this 
Agreement, CTS shall immediately cease use of the Confidential Information of 
Customer (except as the parties otherwise expressly agree to in writing) and 
shall, at Customer's election, either:  (i) return to Customer the original 
and all copies of the same, in whole or in part, in any form, including 
partial copies and modifications, and any related materials received from 
Customer, or (ii) furnish to Customer a certified executed document stating 
that the same has been destroyed.

                    14.3.4  For all accrued and unpaid Fees and other charges 
hereunder not invoiced prior to the termination of this Agreement, CTS shall 
be entitled to invoice Customer for such charges after such termination and 
Customer shall pay such charges within thirty (30) days after receipt of the 
applicable invoice.

               14.4 SURVIVAL TERMS.  Upon termination of this Agreement, all 
obligations of the parties hereunder shall cease, except those obligations 
described in Sections 2.2, 10, 12, 13, 14, 15, and 16, which provisions shall 
survive the termination of this Agreement.  Termination of this Agreement 
shall not be construed to waive or release any claim which a party is 
entitled to assert at the time of such termination, and the applicable 
provisions of this Agreement shall continue to apply to such claim until it 
is resolved.

          15.  LIMITATION OF LIABILITY.  NOTWITHSTANDING ANYTHING TO THE 
CONTRARY, CTS SHALL HAVE NO LIABILITY FOR ANY LOSS TO CUSTOMER, ANY AFFILIATE 
OF CUSTOMER, OR ANY THIRD PARTY EXCEPT FOR:  (I) PHYSICAL LOSS OR DAMAGE TO 
AN INDIVIDUAL OR TO REAL PROPERTY OR TANGIBLE PERSONAL PROPERTY ARISING FROM 
THE NEGLIGENT OR WILLFUL MISCONDUCT OF CTS; OR (II) LIABILITY OF CTS 
EXPRESSLY PROVIDED FOR IN SECTION 12.1 HEREOF; OR (III) LIABILITY OF CTS FOR 
CLAIMS ARISING AS A RESULT OF OR RELATED TO PERFORMANCE OF A SYSTEM, WHICH 
LIABILITY UNDER THIS CLAUSE III SHALL BE LIMITED TO GENERAL MONEY DAMAGES AND 
SHALL IN NO EVENT EXCEED AN AMOUNT EQUAL TO [*], WHERE SUCH AMOUNT EQUALS [*] 
THIS AGREEMENT AND [*] THEREAFTER.  HOWEVER, IN NO EVENT SHALL CTS BE LIABLE 
FOR ANY DAMAGES RESULTING FROM LOSS OF USE, DATA, PROFIT, BUSINESS, REVENUE, 
OR GOODWILL, OR FOR ANY SPECIAL, INDIRECT, INCIDENTAL, CONSEQUENTIAL, 
PUNITIVE, OR EXEMPLARY DAMAGES, WHETHER ARISING IN CONTRACT, TORT (INCLUDING 
WITHOUT LIMITATION NEGLIGENCE OR STRICT LIABILITY) OR OTHERWISE, EVEN IF CTS 
HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH LOSS OR DAMAGE.

          16.  MISCELLANEOUS.

               16.1 NOTICES.  All notices hereunder by either party shall be 
given by personal delivery (including by a reputable courier service) or by 
sending such notice by United States certified mail return receipt requested, 
postage prepaid, and addressed as set forth on the signature page of this 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 18


Agreement.  Such notices shall be deemed to have been given and delivered 
upon receipt and the date of receipt identified by the United States Postal 
Service on any return receipt card shall be conclusive evidence of receipt.  
Notices may also be transmitted by facsimile or telecopy machine, and such 
notices shall be deemed received when transmitted if:  (i) a document is 
electronically generated by the transmitting machine confirming that the 
transmission was received; and (ii) the party transmitting the notice 
deposits such notice the same day with a reputable courier service providing 
delivery not later than the following business day.  Any party, by written 
notice to the other as above described, may alter the address for receipt by 
it of written notices hereunder.

               16.2 INDEPENDENT CONTRACTORS.   It is expressly agreed that 
CTS and Customer are acting hereunder as independent contractors and under no 
circumstances shall any of the employees of one party be deemed the employees 
of the other party for any purpose.  Nothing in this Agreement shall be 
deemed to constitute, create, or in any way be interpreted as a partnership, 
joint venture, franchise, or other formal business organization involving CTS 
and Customer, nor shall anything in this Agreement be deemed to constitute 
one party the employee or agent of the other party.  Neither CTS nor Customer 
shall have any authority under this Agreement to bind, obligate, or otherwise 
commit the other party to any agreement or transaction for any purpose 
whatsoever.

               16.3 EXCUSED PERFORMANCE.  Except for the failure to pay Fees 
or other charges when due hereunder, neither party shall be liable for, or be 
considered to be in breach or default under this Agreement as a result of, 
any delay or failure to perform as required hereunder which is due to any 
cause or condition beyond such party's reasonable control.

               16.4 PUBLICITY.  Neither party shall disclose to any Third 
Party the terms of this Agreement or the existence of this Agreement without 
the express written consent of the other party; PROVIDED, HOWEVER, that 
either party may make public announcements concerning the terms of this 
Agreement or the existence of this Agreement without such express written 
consent of the other party if:  (i) the announcement is necessary for such 
party to comply with the requirements of the United States Securities and 
Exchange Commission, any other governmental agency, any court of competent 
jurisdiction, or applicable law or regulation; or (ii) the subject matter of 
such announcement had been previously disclosed in accordance with the 
requirements of this Subsection.

               16.5 ASSIGNMENT.  Neither party shall assign any of its rights 
or obligations hereunder (in whole or in part) without the express written 
consent of the other party, which consent shall not be unreasonably withheld. 
 Notwithstanding the foregoing, each party may, upon notice to the other 
party, assign this Agreement and all of its rights and obligations hereunder 
(in whole but not in part) to any of its affiliates capable of performing its 
obligations hereunder or to any entity which acquires all or substantially 
all of such party's assets or stock pursuant to any merger, stock or asset 
transfer, consolidation, or other business combination.  Any attempt by any 
party to assign or transfer any of its rights or obligations under this 
Agreement in violation of this Subsection shall be considered void and shall 
be deemed a material breach of this Agreement.  Subject to the foregoing, 
this Agreement will be fully binding upon, inure to the benefit of and be 
enforceable by the parties hereto and their respective successors and assigns.

               16.6 SUBCONTRACTORS.  Notwithstanding anything to the 
contrary, CTS may in its discretion subcontract the performance of any of its 
obligations hereunder or under any Market Purchase Agreement to any Third 
Party; PROVIDED, that CTS's subcontractors shall perform to the same 
standards imposed upon CTS hereunder and CTS shall be liable for the conduct 
of its subcontractors to the same extent as CTS's own liability under this 
Agreement.  Upon request, CTS will provide Customer with a list of such 
subcontractors.


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 19


               16.7 SEVERABILITY.  The invalidity or unenforceability of any 
provision of this Agreement shall not affect the validity or enforceability 
of any other provision of this Agreement.  In the event that any provision of 
this Agreement is deemed invalid or unenforceable by any court of competent 
jurisdiction, such provision shall be deemed to be modified to the extent 
necessary for the provision to be legally enforceable to the fullest extent 
permitted by applicable law.  Any court of competent jurisdiction may enforce 
or modify any provision of this Agreement in order that the provision will be 
enforced by the court to the fullest extent permitted by applicable law.

               16.8 NO WAIVER; CUMULATIVE REMEDIES.  No consent or waiver, 
express or implied, by any party to or of any breach or default by the other 
in the performance by the other of its obligations hereunder shall be deemed 
or construed to be a consent or waiver to or of any other breach or default 
in the performance by such other party of the same or any other obligations 
of such party hereunder.  Except where contrary to the express terms herein, 
the rights and remedies herein are cumulative to those that exist at law or 
in equity and there shall be no implied waiver of such rights and remedies.

               16.9 GOVERNING LAW.  This Agreement shall be governed by, 
subject to, and interpreted in accordance with the laws of the state of 
Washington, without regard to conflict of laws principles.  Each party hereby 
submits to the non-exclusive jurisdiction of the courts of competent 
jurisdiction located in King County, Washington, with respect to any claim or 
proceeding relating to this Agreement.

               16.10  INJUNCTIVE RELIEF.  The parties recognize and agree 
that money damages are an inadequate remedy for breach of Sections 2.2 and/or 
10, above, and further recognize that such breach would result in irreparable 
harm to the party against whom such breach is committed.  Therefore, in the 
event of a breach or threatened breach of any such provision, the 
non-breaching party shall be entitled to injunctive relief (without the 
posting of any bond and without proof of actual damages) in order to prevent 
or to restrain any such breach or threatened breach by the party in breach or 
by any other persons directly or indirectly acting for, on behalf of, or with 
the party in breach, and that neither the party in breach nor such other 
persons will oppose the stipulations set forth in this Subsection or the 
procedures for granting of such relief.  Injunctive relief pursuant to this 
Subsection shall be in addition to all remedies available at law or in equity 
to a party arising from a breach of the provisions described above by the 
other party.

               16.11  LITIGATION EXPENSES.  In any controversy, claim or 
dispute arising out of, or relating to, this Agreement or the method and 
manner of performance thereof or the breach thereof, the prevailing party 
shall be entitled to recover from the other party, in addition to any other 
relief, all of its reasonable costs and expenses, including without 
limitation reasonable attorneys' fees, incurred in connection with such 
controversy, claim, or dispute.  If neither party wholly prevails, the party 
that substantially prevails shall be awarded all of its reasonable costs and 
expenses, including without limitation reasonable attorneys' fees, incurred 
in connection with such controversy, claim, or dispute.

               16.12  ENTIRE AGREEMENT; AMENDMENT.  This Agreement, the 
Support Services Agreement, the Nondisclosure Agreement, the Source Code 
Escrow Agreement, the Roaming Service Agreement, each Market Purchase 
Agreement issued hereunder, and all Schedules to the foregoing agreements, 
contain the entire agreement and understanding between the parties with 
respect to the subject matter hereof and supersede all prior agreements, 
negotiations, representations, and proposals, written and oral, relating to 
the subject matter.  All Schedules and all other documents, when agreed to by 
the parties and attached hereto, are integral to and incorporated herein by 
this reference.  This Agreement and the Schedules attached hereto shall not 
be deemed or construed to be modified, amended, 


MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 20


or waived, in whole or in part, except by written agreement duly executed by 
the parties to this Agreement.

               16.13  COUNTERPARTS.  This Agreement may be signed in one or 
more counterparts, each of which shall be considered an original and which 
shall, taken together, constitute this Agreement.

          EXECUTED as of the date set forth above.

CUSTOMER:                              CTS:
- ---------                              ----

GTE MOBILNET SERVICE CORP.             CELLULAR TECHNICAL SERVICES COMPANY, INC.


By  /s/ JOHN D. MCLEAN                 By  /s/ William C. Zollner
  --------------------------------       ---------------------------------------
John D. McLean                         William C. Zollner
- ----------------------------------     -----------------------------------------
Print Name                             Print Name

Vice President - Technology            President & Chief Operating Officer
- ----------------------------------     -----------------------------------------
Title                                  Title

Customer's Address for Notices:        CTS's Address for Notices:
- -------------------------------        --------------------------

1350 Northmeadow Parkway,              2401 Fourth Avenue, Suite 808
Suite 110, Mail Code NMCAO             Seattle, Washington  98121
Roswell, Georgia  30076                Attention: Legal Department
Attention: Mr. Jeff Schaulin           Telefax: (206) 443-1550
Telefax: (770) 667-4768

with a copy to:
245 Perimeter Center Parkway
Attn: Legal Department Mail Code 0LGL
Atlanta, Georgia  30346
Telefax: (770) 391-8066








MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 21



                               INDEX OF SCHEDULES
                                       TO
                      MASTER PURCHASE AND LICENSE AGREEMENT



SCHEDULE       DESCRIPTION                                        PAGE NO.
- --------       -----------                                        --------

Schedule A     Fees and Payment Terms                                   24
               
Schedule B     CTS-Certified Hardware                                   29
               
Schedule C     Market Areas                                             30
               
Schedule D     Specifications                                           31
               
Schedule E     Acceptance Test Plan                                     35
               
Schedule F     Training Classes                                         43
               
Schedule G     Technical Managers                                       46
               
Schedule H     Nondisclosure Agreement                                  47










MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 22



                                  SCHEDULE A
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                            FEES AND PAYMENT TERMS



Customer shall pay the following Fees and charges in connection with the 
Master Purchase and License Agreement between CTS and Customer (the 
"Agreement"), together with any other Fees and charges specified in the 
Agreement.  All undefined capitalized terms used in this Schedule shall have 
the meanings ascribed to such terms as set forth in the Agreement.

          1.   LICENSE FEES.

               1.1  INITIAL LICENSED PROGRAMS.  In consideration for the 
License, Customer shall pay the following Fees to CTS for the following 
Licensed Programs in accordance with the terms of the Agreement and this 
Schedule:

     LICENSED PROGRAMS(1)                     LICENSE FEES PER CELL SITE
     -----------------                        --------------------------

     [*]                              [*] per Cell Site

     [*]                              [*] PER CELL SITE

                                      Total:[*] per Cell Site

               1.2  ADDITIONAL LICENSED PROGRAMS.  For all additional 
software, data tables, and programs which CTS and Customer agree in writing 
to add to a System as Licensed Programs (other than the Licensed Programs 
described in Subsection 1.1, above, and Section 3, below), Customer shall pay 
such Fees to CTS as CTS and Customer mutually agree to in writing.

               1.3  NEW RELEASES AND MAINTENANCE RELEASES.  For all New 
Releases and Maintenance Releases of the Licensed Programs described in 
Sections 1.1, 1.2 and 3 of this Schedule, Customer shall pay such Fees to CTS 
as specified in Subsection 2.3 of the Agreement.

          2.   HARDWARE FEES.

               2.1  CELL SITE SYSTEM HARDWARE PURCHASED FROM CTS.  In 
consideration for the Hardware components purchased from CTS for installation 
in Cell Sites, Customer shall pay CTS the following Fees in accordance with 
the terms of the Agreement and this Schedule:

- ------------------------
(1) Fees include pricing for the License to use Licensed Programs and for the
software performance warranty set forth in Subsection 11.2 of the Agreement.
Fees exclude pricing for license to use interdiction software, which is
specified in Section 3, below.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 23



     HARDWARE DESCRIPTION(2)                  HARDWARE FEES
     --------------------                     -------------

     [*]                                      [*] per Cell Site

               2.2  ADDITIONAL HARDWARE PURCHASED DIRECTLY FROM CTS.  Except 
as otherwise provided in Sections 2.1 and 3 of this Schedule, Customer shall 
pay CTS an amount equal to CTS's then-current list price for all Hardware 
purchased from CTS.

               2.3  HARDWARE PURCHASED DIRECTLY FROM THIRD PARTIES.  For all 
Hardware purchased from Third Parties for a System (I.E., all Hardware other 
than the Hardware purchased from CTS described in Sections 2.1, 2.2, and 3 of 
this Schedule), Customer shall pay CTS an integration Fee equal [*] of the 
Third-Party supplier's list price for such Hardware.  Notwithstanding the 
above, Customer shall have no obligation to pay such integration Fee for 
CISCO routers purchased by Customer from a Third Party, so long as Customer 
performs all necessary integration work for such routers in accordance with 
CTS's specifications for such work.

          3.   FEES FOR INTERDICTION FUNCTIONALITY.  In addition to the Fees 
set forth in Sections 1 and 2, above, and in consideration for the license to 
use certain software, and the sale of certain hardware, necessary to perform 
the interdiction functionality for a given System, Customer shall pay the 
Fees set forth below which pertain to the interdiction method utilized for 
such System:

     INTERDICTION METHOD(3)                   INTERDICTION FEES
     [*]                                      [*] per Interdiction Module
     [*]                                      [*] per switch [*]
     [*](4)                                   [*] per switch [*]

          4. DEPLOYMENT FEES.

               4.1  DEPLOYMENT MANAGEMENT FEES.  For the deployment of a 
System within a Licensed Market, Customer shall pay CTS a one-time deployment 
management Fee equal [*], to be paid upon execution of the initial Market 
Purchase Agreement for such System.  In consideration for such deployment 
management Fee, CTS will provide the following for the initial configuration 
of such System:  (i) consulting services for planning the configuration for 
such initial System and preparing an itemized list of all Hardware for such 
initial System; (ii) availability of one primary and one back up technical 
manager for such initial System, as specified in Subsection 5.2 of the 
Agreement; (iii) installation services for the installation of Hardware at 
each Regional Processor Complex for such initial

- ------------------------
(2) Fees include pricing for purchase of the Cell Site System Hardware and for
the hardware performance warranty set forth in Subsection 11.3 of the Agreement
with respect to such Cell Site System Hardware.  Fees exclude pricing for
purchase of interdiction hardware, which is specified in Section 3, below, and
also excludes pricing for cabling and other peripherals required for a given
System.

(3) Fees include pricing for the license to use software, and the sale of
hardware, which directly pertain to the interdiction method utilized for a given
System.  Fees exclude pricing for cabling and other peripherals required for the
interdiction method utilized.  For any other interdiction method utilized for a
given System, Customer shall pay such Fees to CTS as the parties mutually agree
to in writing.

(4) [*]



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 24


System, as specified in Subsection 5.2 of the Agreement; (iv) one session of 
PreTect-TM- User Training and Cell Site System Overview Training, at no 
additional charge, as specified in Subsection 5.1, below[*].  Any additional 
deployment management services by CTS will be pursuant to such terms and 
subject to such Fees as CTS and Customer mutually agree to in writing.

               4.2  CELL SITE SYSTEM INSTALLATION FEES.  At Customer's 
request, CTS will install the initial configuration of Components at a Cell 
Site in accordance with the terms of the Agreement.  In consideration for 
such installation services, Customer shall pay CTS an amount equal to [*] per 
Cell Site installation, [*].

          5.   TRAINING FEES.

               5.1  PRETECT-TM- USER TRAINING/CELL SITE SYSTEM OVERVIEW 
TRAINING.  As partial consideration for the deployment management Fees 
described in Subsection 4.1, above, CTS will conduct one PreTect-TM- User 
Training session and one Cell Site System Overview Training session, at no 
additional charge, as specified in Subsection 8.1 and SCHEDULE F of the 
Agreement.  At Customer's request, CTS will conduct one or more additional 
PreTect-TM- User/Cell Site System Overview combined training sessions, as 
specified in Subsection 8.1 and SCHEDULE F of the Agreement, on a mutually 
acceptable schedule.  In consideration for such additional training, Customer 
shall pay CTS a Fee equal to [*] per combined training session, plus all 
expenses incurred by CTS in connection with such training session as 
described in Section 9, below.

               5.2  INSTALLATION TRAINING. [*], as specified in Subsection 
8.1 and SCHEDULE F of the Agreement.  At Customer's request, CTS will conduct 
one or more additional Cell Site System Installation training sessions as 
specified in Subsection 8.1 and SCHEDULE F of the Agreement, on a mutually 
acceptable schedule.  In consideration for such additional training, Customer 
shall pay CTS [*] per training session, plus all expenses incurred by CTS in 
connection with such training session as described in Section 9, below.

               5.3  MAINTENANCE TRAINING. [*], as specified in Subsection 8.1 
and SCHEDULE F of the Agreement.  At Customer's request, CTS will conduct one 
or more additional Cell Site System Maintenance training sessions for such 
System as specified in Subsection 8.1 and SCHEDULE F of the Agreement, on a 
mutually acceptable schedule.  In consideration for such additional training, 
Customer shall pay CTS [*] per training session, plus all expenses incurred 
by CTS in connection with such training session as described in Section 9, 
below.

               5.4  ADDITIONAL TRAINING.  Additional training by CTS will be 
pursuant to such terms and subject to such Fees as CTS and Customer mutually 
agree to in writing. 

          6.   SUPPORT SERVICE FEES.  For each System, CTS will offer the 
support services set forth in the Support Services Agreement (I.E., basic 
support services, Hardware maintenance, System monitoring, and software 
subscription services), subject to the fees and other charges set forth in 
such Support Service Agreement and the Schedules attached thereto.

          7.   REAL-TIME PREVENTION OF ROAMING CLONING FRAUD.  For each 
System, CTS will offer the services set forth in the Roaming Service 
Agreement, subject to the fees and other charges set forth in such Roaming 
Service Agreement and the Schedules attached thereto.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 25


          8.   PRETECT-TM- GRAPHICAL USER INTERFACE.  CTS and Customer agree 
that, for each System, CTS will provide up to [*] PreTect-TM- Graphical User 
Interface connections for no additional charge.  For each additional 
PreTect-TM- Graphical User Interface connection for a System, Customer shall 
pay CTS a Fee equal to [*].

          9.   OTHER FEES.  Except as otherwise provided in this Agreement, 
Customer agrees to pay CTS for:  (i) all travel, lodging, and other 
out-of-pocket expenses incurred by CTS in connection with the Agreement; and 
(ii) all services performed by CTS, other than those services for which CTS's 
compensation is expressly set forth elsewhere in the Agreement or the 
Schedules thereto, at the then-current billing rate of the CTS personnel 
performing such services, plus all expenses incurred by CTS in connection 
with such services (including without limitation all costs of materials, 
costs of third-party contractors, and all travel, lodging, and other 
out-of-pocket expenses), except as the parties otherwise agree to in writing.

          10.  PAYMENT TERMS.

               10.1 GENERAL.

                    10.1.1 For each deployment of Components for a System, 
Customer shall pay the Fees described in Sections 1.1, 2.1, and 3 above, to 
CTS as follows:  (i) [*] of the aggregate of such Fees shall be paid to CTS 
upon Customer's execution of the applicable Market Purchase Agreement for 
such Components (or upon CTS's receipt of the applicable Purchase Order if 
such Components are not identified in a Market Purchase Agreement); (ii) [*] 
of the aggregate of such Fees shall be paid to CTS upon CTS's delivery of 
Components for the deployment to a common carrier for shipment to Customer 
(if such deployment involves multiple shipments, then such aggregate amount 
shall be paid on a pro rata basis at the time of each shipment); and (iii) 
the remaining [*] of the aggregate of such Fees shall be paid to CTS [*], or 
(b) [*] from Customer's receipt of such Components, unless any delay in 
acceptance testing beyond such [*] is due to the fault of CTS.

                    10.1.2 For each deployment of Components for a System, 
Customer shall pay the Fees described in Subsection 2.2, above, to CTS as 
follows:  (i) [*] of the aggregate of such Fees shall be paid to CTS upon 
Customer's execution of the applicable Market Purchase Agreement for such 
Components (or upon CTS's receipt of the applicable Purchase Order if such 
Components are not identified in a Market Purchase Agreement); and (ii) the 
remaining [*] of the aggregate of such Fees shall be paid to CTS upon CTS's 
delivery of such Components to a common carrier for shipment to Customer (if 
multiple shipments are made, such aggregate amount shall be paid on a pro 
rata basis at the time of each shipment).

               10.2 OTHER PAYMENT TERMS.  CTS will invoice Customer for 
amounts to be paid under this Agreement, and Customer will pay such invoice 
within [*] receipt of the applicable invoice.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 26


                                  SCHEDULE B
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                            CTS-CERTIFIED HARDWARE


          This Schedule contains a list of the Hardware certified by CTS for 
purchase by Customer from certain Third Parties, approved in advance and in 
writing by CTS, as more fully described in Subsection 3.2 of the Master 
Purchase and License Agreement between CTS and Customer. All configurations 
of such Hardware (including any software bundled with such hardware as 
supplied by the hardware manufacturer) used for a given System must be 
approved in advance and in writing by CTS.

          1. Hewlett-Packard processors and peripheral Hewlett-Packard 
             equipment.  The models used for each System will vary depending on
             the Hardware configuration used for such System.

          2. CISCO routers and peripheral CISCO equipment.  The models used 
             for each System will vary depending on the Hardware configuration
             used for such System.

          3. X-terminal workstations (CTS recommends Hewlett-Packard ENVIZEX 
             X-terminal workstations with a minimum of 8 MB of memory).  Memory 
             requirements for workstations will vary depending on the
             configuration used for a given System.

          4. Hewlett-Packard LaserJet (IV or above) printer.  Printer must 
             carry baseline memory (memory size dependent on model).




MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 27


                                  SCHEDULE C
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                                 MARKET AREAS


This Schedule contains a list of Customer's market areas for purposes of the 
Master Purchase and License Agreement between CTS and Customer (the 
"Agreement").

[*]



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 28


                                  SCHEDULE D
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                                SPECIFICATIONS


     This Schedule contains the functional Specifications for a System as 
required by the Master Purchase and License Agreement between CTS and 
Customer (the "Agreement").  All undefined capitalized terms used in this 
Schedule shall have the meanings ascribed to such terms as set forth in the 
Agreement.  Each overall System is comprised of one or more Regional 
Processor Systems and Cell Site Systems.


     BLACKBIRD-REGISTERED TRADEMARK- PLATFORM AND PRETECT-TM- APPLICATION
                              FUNCTIONAL OVERVIEW


Together, the Blackbird-Registered Trademark- Platform and PreTect-TM- form a 
home market cloning prevention solution, in which the Blackbird-Registered 
Trademark- Platform collects cellular phone data that PreTect-TM- measures 
and uses to interdict analog cellular phone cloning attempts in real time.


BLACKBIRD-REGISTERED TRADEMARK- PLATFORM OVERVIEW


The Blackbird-Registered Trademark- Platform is the data collection and 
storage platform for CTS's real time cellular fraud prevention applications. 

Using hardware and software at the Cell Site System (CSS) and Regional 
Processor (RP), the Blackbird-Registered Trademark- Platform collects and 
stores the following cellular call data that form a cellular call event 
signature, or "fingerprint":

     -  Radio frequency (RF) transmission characteristics: The subtle 
        differences between different cellular phones' RF signatures.
     -  Mobile Identification Number (MIN): The unique phone number assigned 
        a cellular phone.
     -  Electronic Serial Number (ESN): The unique number programmed into a 
        cellular phone during the manufacturing process.
     -  [*]
     -  [*]

CTS designed the Blackbird-Registered Trademark- Platform as a platform for 
delivery of a modular system of cellular fraud prevention applications.  The 
Blackbird-Registered Trademark- Platform Application Programming Interface 
(API) facilitates seamless integration of current and future CTS products to 
meet the changing fraud prevention requirements of its customers.

PRETECT-TM- OVERVIEW

PreTect-TM- is the real time cloning detection and interdiction application 
designed to function on the Blackbird-Registered Trademark-Platform.  
PreTect-TM- works to prevent cloning fraud.

Over time, PreTect-TM- uses the information collected and stored by the 
Blackbird-Registered Trademark- Platform to build a unique fingerprint for 
each analog cellular phone.  PreTect-TM- also measures each call attempt 
transmitted



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 29


to a cell site against this fingerprint.  This real time measurement process 
allows PreTect-TM- to quickly determine whether the attempt originated from a 
cloned analog cellular phone.

     Users access PreTect-TM- through a Graphical User Interface on Hewlett 
         Packard X-terminals or IBM PC-compatible computers running X-terminal 
         emulation software.  Through the graphical user interface, users can
         [*]

Through the graphical user interface, users can configure PreTect-TM- to meet 
the needs of daily operations on their cellular network:

     -  [*]

Finally, [*].  This allows customer service and fraud prevention departments 
to better utilize the data storage and analysis capabilities of the 
Blackbird-Registered Trademark- Platform/PreTect-TM- system:

     -  [*]

SYSTEM HARDWARE OVERVIEW

The Blackbird-Registered Trademark- Platform/PreTect-TM- system includes the 
following hardware systems:

Each regional processor complex consists of one or more processors, routers 
and other hardware necessary to store cellular call data and maintain 
connectivity between the Cell Site System and regional processor system.

     -  Regional Processor: Typically a Hewlett Packard 9000 series processor(s)
        running the HP-UX operating system. 

     -  Router: Typically a CISCO 7000 series router(s) used to provide TCP/IP
        Ethernet connectivity between the regional processor and each cell site.

The Blackbird-Registered Trademark- Platform and PreTect-TM- software work 
with the regional processor system to provide real-time call data collection, 
storage and reporting.  In addition, the Blackbird-Registered Trademark- 
Platform's distributed real-time message processing allows distribution of 
fingerprint data among multiple regional processor systems in large markets.

The Cell Site System (CSS) consists of the cell site processor, radios and 
other equipment necessary to collect cellular call data, communicate with the 
regional processor system and shut down, or interdict, cloning attempts.  At 
least one CSS is required for each cell site that uses the 
Blackbird-Registered Trademark- Platform/PreTect-TM- system.  A single CSS 
will support up to three reverse control channel frequencies.

     -  Cell Site Processor (CSP): An industry-standard PC housed in an 
        industrial-grade metal enclosure, with a cellular modem for remote 
        network troubleshooting.
     -  Radio: Cellular radios which collect cellular call data directly from 
        the cell site antenna and transmit that data to the CSP without 
        interrupting cell site call traffic.
     -  Interdiction module: Hardware unit that performs interdiction of 
        cloning attempts upon command from the CSP.  The interdiction module 
        will vary depending on the carrier's infrastructure type.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 30


Blackbird-Registered Trademark- and PreTect-TM- software work with the CSS to 
gather home market cellular call characteristics, relay information regarding 
those characteristics to the regional processor when necessary, and perform 
interdiction of cloning attempts.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 31


BLACKBIRD-REGISTERED TRADEMARK- PLATFORM/PRETECT-TM- PROCESS OVERVIEW

This diagram follows a cellular call attempt through the Blackbird-Registered 
Trademark- Platform/PreTect-TM- system:




                                 [GRAPHIC]





MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 32


                                  SCHEDULE E
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                             ACCEPTANCE TEST PLAN

          Set forth below is the Acceptance Test Plan described in Subsection 
1.1 of the Master Purchase and License Agreement between CTS and Customer 
(the "Agreement").  For purposes of this Acceptance Test Plan, all references 
to "fraud" or "cloning fraud" shall mean analog cellular telephone cloning 
fraud within the home market.  All undefined terms used herein shall have the 
meanings ascribed to such terms in the Agreement.

                                     GOALS

[*]

                                TEST CONDITIONS

The tests conducted under this plan are subject to satisfaction of the 
following conditions at all times during testing:

- -  Customer is in compliance with the CTS Infrastructure and Environmental 
   Requirements for the relevant System, and otherwise is in compliance with the
   Agreement.

- -  Customer's cellular network is functioning properly, such that it does not 
   degrade the performance of the System.

- -  Customer continuously purchases support services from CTS for the relevant 
   System under the Support Services Agreement, and otherwise is in compliance 
   with such agreement.

- -  The hardware sizing and configuration for the relevant System have been 
   approved by CTS.

- -  [*]

                             ACCEPTANCE TEST TABLE

Specified tests under this plan will run for each "Initial System"(as such 
term is defined in Subsection 7.1 of the Agreement) and when certain 
significant Components are added to such System.  Set forth below is a table 
showing the tests conducted under this plan for each event requiring testing:

[*]

                               ACCEPTANCE TESTS

Customer personnel will conduct all tests under this plan, except as the 
parties otherwise agree.  In any event, CTS personnel will be entitled to 
participate as members of the test team.

A.  INSTALLATION VERIFICATION TESTS

A.1  CELL SITE SYSTEM INSTALLATION AND NETWORK CONNECTIVITY VERIFICATION

Goal: 

       -  [*]

Method: 



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 33


       -  [*]


                                             [*]


       -  [*]


Deliverable: 
        -  [*]


Approval: Customer Initial  ______  Date  ______ CTS Initial  ______  Date ____

A.2  REGIONAL PROCESSOR COMPLEX EQUIPMENT INSTALLATION VERIFICATION

Goal: 

        -  [*]

Method: 
              -  [*]

Deliverable: 
        -  [*]

Approval: Customer Initial  ______  Date  ______ CTS Initial  ______  Date ____

A.3  CSS/RPC EQUIPMENT CONFIGURATION VERIFICATION

Goal: 
        -  [*]

Method: 
        -  [*]

Deliverable: 
        -  [*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

B.  GRAPHICAL USER INTERFACE (GUI) TEST

Goal: 
        -  [*]

Method:
        -  [*]

Deliverables:
        -  [*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 34


C.  CALL EVENT DATA COLLECTION TEST

Goal:
        -  [*]

Method: 
        -  [*]

Deliverable:
        -  [*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

D.  REPORTS TEST

Goal: 
        -  [*]

Method: 
        -  [*]

Deliverable:
        -  [*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

E.  CONTROL GROUP PHONE TEST

E.1  TEST PREPARATIONS

Control Group Phones:

   [*]

Additional Test Preparations:

   CTS and Customer will prepare the System for testing by performing the 
   items described below:

   -  [*]

E.2  FINGERPRINT ESTABLISHMENT

Goal: 
      -  [*.]

Method:
      -  [*]




MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 35



Deliverable:

      -  [*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

E.3  VALID AND FALSE NEGATIVE CALL TEST

Goals: 
        -  [*]

Method:
        -  [*]

Deliverables:
        -  [*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

E.4  COUNTERFEIT CALL TEST

Goal:
        -  [*]

 Method: 
        -  [*]

Deliverable:
        -  [*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

F.  ADDITIONAL CELL SITE VERIFICATION TEST

[*]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

G.  ADDITIONAL REGIONAL PROCESSOR COMPLEX EQUIPMENT TEST

[*]

G.1  NETWORK CONNECTIVITY

Goal: 
        -  [*]

Method:

        -  [*]

Deliverable:

        -  [*]



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 36


Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

G.2  APPLICATION SERVER REPORTING

Goal: 
        -  [*]

Method:
        -  [*]

Deliverable:
        -  [*
        -  *]

Approval: Customer Initial  ______  Date  ______CTS Initial  ______  Date _____

H.  ADDITIONAL REGIONAL PROCESSOR COMPLEXES

[*]

I.  DURATION OF TESTING

The duration of all testing under this plan shall not exceed [*] and shall be 
specified in the applicable Implementation Schedule, as the same may be 
modified from time to time by the mutual agreement of the parties.

                              CERTAIN DEFINITIONS

ACRONYM            DESCRIPTION
- -------            -----------
[*]                [*]
[*]                [*]
CSS                Cell Site System
RPC                Regional Processor Complex
GUI                Graphical User Interface
MIN                Mobile Identification Number
ESN                Electronic Serial Number



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 37


                                  SCHEDULE F
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                               TRAINING CLASSES

     This Schedule contains a description of the training classes specified 
in the Master Purchase and License Agreement between CTS and Customer (the 
"Agreement").  All undefined capitalized terms used in this Schedule shall 
have the meanings ascribed to such terms as set forth in the Agreement.

Each of the initial training classes are to be conducted at facilities 
provided by Customer, in the market area in which the System is installed.  
Where a classroom environment is required Customer will need to include 
adequate space for the number of participants, an overhead transparency 
projector, and access, within a reasonable distance, to an X-terminal capable 
of running the System's graphical user interface.  Where a Cell Site 
environment is required, Customer will need to provide adequate space such 
that the number of participants are able to view, concurrently, 
demonstrations of Cell Site Hardware installation or maintenance procedures. 
Training sessions are to be held during normal business hours (local time), 
up to approximately eight hours per day, on concurrent days.

A. PRETECT-TM- USER TRAINING SESSION

   Participant Prerequisite:  Previous professional experience within a 
   cellular carrier's operation identifying and/or resolving cases of cellular 
   fraud or working with the carrier's customer care organization.

   Duration:  Approximately four hours, to be conducted in one business day.

   Facilities requirements:  Classroom, as described above.

   Maximum number of participants:  Governed by the number of terminals 
   available with access to the PreTect Graphical User Interface. Recommended 
   number of participants is 4 persons per terminal.

   Timing:  To be conducted after installation of Regional Processor and at 
   least five Cell Site Hardware systems in a market area, and end-to-end 
   verification of System functionality by CTS.

   Course Description:  This course is targeted at carrier personnel who 
   currently work in the carrier's Fraud or Customer Care organizations. This 
   course shows PreTect-TM- users how to access information and perform tasks 
   using the PreTect-TM- graphical user interface.  This includes an overview of
   the functionality, pre-call detection, and interdiction.  Additional training
   topics include: querying the system by mobile identification number (MIN) and
   destination, monitoring fingerprints, and generating on-screen and print 
   reports.

B. CELL SITE SYSTEM TRAINING SESSION

   The Cell Site System training will depend on whether Customer elects to 
   have CTS perform installation of Cell Site Components or elects to perform 
   such installation itself, as specified in the Agreement.  If Customer elects 
   to have CTS perform such installation, CTS will provide the Cell Site System 
   Overview training described below.  If Customer elects to perform such 
   installation itself, CTS will provide the Cell Site System Installation 
   training described below.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 38


1. Cell Site System Overview

   Participant Prerequisite:  Demonstrated familiarity with PC-type hardware 
   systems.  Previous experience working in the cell site environment 
   recommended.

   Duration:  Approximately four hours of classroom instruction.  Observation 
   of installation of up to three Cell Site hardware systems. Cell site 
   observation to be conducted according to a mutually-agreed-upon schedule.

   Facilities requirements:  Classroom and cell site, as described above.

   Maximum number of participants:  Governed by cell site environment 
   restrictions, as described above.

   Timing:  To be conducted at a mutually agreed upon time.

   Course Description:  This course is targeted at Customer personnel who 
   currently work supporting the Customer's cell sites.  The training includes 
   an overview of CSS hardware infrastructure, training in composition and 
   layout of CTS additions to cell sites, and a basic understanding of network 
   interfaces and problem solving techniques including the cell site 
   relationship to the regional processor.

2. Cell Site System Installation

   Participant Prerequisite:  Demonstrable skills installing and maintaining 
   PC-type hardware systems.  Previous experience working in the cell site 
   environment recommended.  [*]

   Duration:  Approximately four hours of classroom instruction.  
   Participation in installation of at least five Cell Site hardware systems, 
   with the Cell Sites selected including a representative sample of the 
   possible interfacing requirements (RF connection and networking).  Cell site 
   training to be conducted according to a mutually-agreed-upon schedule.

   Facilities requirements:  Classroom and cell site, as described above.

   Maximum number of participants:  Governed by cell site environment 
   restrictions, as described above.

   Timing:  To be conducted after installation of Regional Processor, unless 
   the parties otherwise agree to in writing.

   Course Description:  This course is targeted at Customer personnel who 
   currently work supporting Customer's cell sites. This includes an overview of
   CSS hardware infrastructure, proper handling and installation of CSS 
   components, and a basic understanding of network interfaces and problem 
   solving techniques.

   Course Requirement:  This CTS training session is required for all 
   Customer personnel who will be performing installation of Cell Site System 
   hardware at Cell Sites, and will suffice as "Train the Trainer" training to 
   enable Customer to train its own personnel for the installation of Cell Site 
   System hardware.  Upon CTS certification, such Installation Trainers will be 
   responsible for training Customer personnel in accordance with the 
   CTS-provided curriculum for Cell Site System Installation training, and for 
   maintaining Installation Trainer certification in accordance



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 39


   with CTS re-certification requirements.  CTS will provide such additional
   "Train the Trainer" training on such terms and for such training fees as CTS
   and Customer mutually agree to in writing.

C. CELL SITE SYSTEM MAINTENANCE TRAINING SESSION

   Participant Prerequisite:  Cell Site System Installation training, as 
   described above.  In addition, demonstrable skills repairing PC-type hardware
   systems.  Previous experience working in a cell site environment recommended.

   Duration:  Approximately four hours of classroom training and eight hours 
   of on-the-job, participatory training in the cell site environment.

   Facilities requirements: Classroom and cell site, as described above.

   Maximum number of participants:  Governed by cell site environment 
   restrictions, as described above.

   Timing:  To be conducted after installation of Regional Processor and at 
   least five Cell Site Hardware systems in a market area, and end-to-end 
   verification of System functionality, unless the parties otherwise agree to 
   in writing.

   Course Description:  This course is targeted at carrier personnel who 
   currently perform hardware repairs on cellular network equipment. The course 
   includes basic trouble-shooting techniques of the CSS environment, proper 
   handling of CSS hardware, and CSP component replacement.

   Course Requirement:  This CTS training session is required for all 
   Customer personnel who will be performing maintenance of Cell Site System 
   hardware at Cell Sites, and will suffice as "Train the Trainer" training to 
   enable Customer to train its own personnel for the maintenance of Cell Site 
   System hardware.  Upon CTS certification, such Maintenance Trainers will be 
   responsible for training Customer personnel in accordance with the 
   CTS-provided curriculum for Cell Site System Maintenance training, and for 
   maintaining Maintenance Trainer certification in accordance with CTS 
   re-certification requirements.  CTS will provide such additional "Train the 
   Trainer" training on such terms and for such training fees as CTS and 
   Customer mutually agree to in writing.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 40


                                  SCHEDULE G
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                   TECHNICAL MANAGERS - OVERALL COORDINATION




CTS TECHNICAL MANAGERS:

Primary:       [*]
               Cellular Technical Services Company, Inc.
               2401 Fourth Avenue, Suite 808
               Seattle, Washington  98121
               [*]

Back Up:       [*]
               Cellular Technical Services Company, Inc.
               2401 Fourth Avenue, Suite 808
               Seattle, Washington  98121
               [*]

CUSTOMER TECHNICAL MANAGERS:

Primary:       [*]

Back Up:       [*]



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 41


                                  SCHEDULE H
                                      TO
                     MASTER PURCHASE AND LICENSE AGREEMENT

                            NONDISCLOSURE AGREEMENT




Attached to this Schedule is a copy of the Nondisclosure Agreement described 
in the Master Purchase and License Agreement, together with all supplements 
thereto.



MASTER PURCHASE AND LICENSE AGREEMENT                                    PAGE 42


CONFIDENTIAL DISCLOSURE AGREEMENT

          THIS AGREEMENT is effective as of August 29, 1995, by and between 
GTE Mobilnet Service Corp., GTE Mobilnet of California Limited Partnership 
and GTE Mobilnet of Santa Barbara Limited Partnership (hereinafter 
collectively called "GTE") and Cellular Technical Services Company, Inc., 
having an address at 2401 Fourth Avenue, Suite 803, Seattle, WA 98121 
(hereinafter called "CTS").

          WHERAS, each party wishes to disclose to the other party certain 
information relating to its proprietary technology, some of which information 
the transmitting party deems to be confidential, and trade secrets; and

          WHERAS, each party is willing to receive from the other party such 
information for the purpose of evaluating whether the parties wish to enter 
into a business relationship between CTS and GTE, (the "Project").

          NOW THEREFORE, in consideration of the foregoing premises and the 
mutual covenants and promises herein contained, the parties hereto agree as 
follows:

          1.   This Agreement shall terminate upon completion of the Project 
or four (4) years from the effective date first stated above, whichever 
occurs first.

          2.   Confidential Information, as used herein, shall mean: (a) 
written or documentary information which (1) relates to the above identified 
subject matter, (ii) is received by one party directly or indirectly from the 
other party, and (iii) is marked "Confidential" or "Proprietary 
Confidential", or bears a marking of like import, or which one party states 
in writing at the time of transmittal to or receipt by the other party is to 
be considered confidential; and, (b) orally disclosed information which 
relates to the above identified subject matter and which the transmitting 
party, within twenty (20) days after the first oral disclosure thereof 
confirms in a writing delivered to the receiving party the confidential 
nature of such orally disclosed information. Such writing shall be 
sufficiently specific to enable the receiving party to identify the 
information considered to be confidential. The transmitting party shall have 
the right to correct any inadvertent failure to designate information as 
confidential or proprietary by written notification to the receiving party as 
soon as practical (but in no event later than ten (10) business days) after 
such error is determined by the transmitting party. Upon receipt of such 
notification, the receiving party shall, from that time forward, treat such 
information as Confidential Information in accordance with this Agreement.

          3.   The term "Trade Secrets" as used in this Agreement shall mean 
Confidential Information that:

               (i)    derives economic value, actual or potential, from not 
being generally known to, and not being readily ascertainable by proper means 
by, other persons who can obtain economic value from its disclosure or use; 
and

               (ii)   is the subject of efforts that are reasonable under the 
circumstances to maintain its secrecy.

          4.   The terms "Confidential Information" and "Trade Secrets" do 
not include, and the receiving party shall have no obligation with respect to 
information, which:



CONFIDENTIAL DISCLOSURE AGREEMENT                                         PAGE 1


               (i)    is already known to the receiving party at the time of 
the first disclosure thereof to the receiving party as evidenced by prior 
documentation or other tangible embodiments of such information thereof; or

               (ii)   is or becomes publicly known through no wrongful act of 
the receiving party; or

               (iii)  is rightfully received by the receiving party from a 
third party without restriction and without breach of this or any other 
Agreement, or

               (iv)   is approved for release by written authorization of an 
officer of the transmitting party at the vice president level or higher.

The receiving party shall have the burden of proving the existence of any of 
the exclusions described in this Section 4.

          5.   The Parties acknowledge and agree that as part of the 
evaluation of the Project, the parties will obtain and have access to 
Confidential Information and Trade Secrets of the other party and that the 
misappropriation, unauthorized use or disclosure of such Confidential 
Information or Trade Secrets would cause irreparable harm to the parties to 
this Agreement. The parties agree to use the same degree of care to avoid and 
prevent disclosure of any party's Confidential Information and Trade Secrets 
as each party uses to prevent disclosure of its own Confidential Information 
and Trade Secrets of a similar nature (which is in any event no lesser 
standard than that which a reasonable person or business would utilize with 
respect to its own similar trade secrets or confidential information).

          6.   With respect to any Confidential Information, each party 
agrees that following the disclosure of confidential Information pursuant to 
this Agreement, they shall not directly or indirectly use for any purpose 
whatsoever or disclose any Confidential Information that the parties may have 
or acquire in connection with the Project except as authorized in writing by 
an officer (at the vice president level or higher) of the party to whom the 
Confidential Information belongs.

          7.   With respect to any Trade Secrets, each party agrees not to 
use for any purpose whatsoever or disclose the Trade Secrets of the other 
party at any time hereafter except as authorized herein or until such Trade 
Secrets become generally available to the public by independent discovery or 
development or publication. The rights of the parties to protection of their 
Trade Secrets in this Agreement are in addition to the rights which the 
parties have under common or statutory law for the protection of Trade 
Secrets.

          8.   The parties to this Agreement agree to disclose the other 
party's Confidential Information or Trade Secrets only to their own employees 
and affiliates directly involved in the evaluation of the Project with a need 
to know. The receiving party shall be responsible for the failure of any of 
its employees or affiliates to fully comply with all provisions of the 
Agreement. Neither party hereto shall, internally or in conjunction with any 
other person, reverse engineer, reverse compile or reverse assemble the 
Confidential Information or Trade Secrets of the other party, or use such 
Confidential Information or Trade Secrets for its own benefit or for the 
benefit of others, for any purpose other than the purposes expressly 
authorized herein in connection with the evaluation of technology described 
in the Whereas Clauses, above. For purposes of this Agreement, the term 
"affiliate" shall mean any corporation, firm, partnership or other legal 
entity which is owned or controlled by any of the parties hereto to the 
extent of equal to or more than fifty percent (50%) of the equity interest 
having the power to



CONFIDENTAL DISCLOSURE AGREEMENT                                          PAGE 2


vote on or otherwise to direct affairs of the entity. The party disclosing to 
an affiliate any Confidential Information and/or Trade Secrets shall notify 
the affiliate of its obligations under this Agreement. Each of the 
undersigned GTE entities shall be jointly and severably liable for any breach 
of this Agreement by an affiliate of any of the undersigned GTE entities.

          9.   The parties to this Agreement agree that all Confidential 
Information or Trade Secrets of the transmitting party are the exclusive 
property of such party and agree promptly to return to such party upon 
demand, all such Confidential Information or Trade Secrets and copies thereof 
furnished under this Agreement which is either received in or reduced to 
material form.

         10.    Nothing contained in this Agreement shall be construed as (1) 
requiring a party to disclose, or to accept, any particular information, or 
(ii) granting to the receiving party a license, either express or implied, 
under any patent, copyright, trade secret, or other intellectual property 
rights now or hereafter owned, obtained, or licensable by the other party.

         11.    Except as otherwise provided in this Agreement, all notices 
required or permitted to be given hereunder shall be in writing and shall be 
valid and sufficient if dispatched by certified or registered mail, postage 
prepaid, in any post office in the United States, by recognized courier, or 
hand-delivered, addressed as follows:

         If to CTS:

                  Attn. : Legal Department
                  Cellular Technical Services Company, Inc.
                  2401 Fourth Avenue, Suite 803
                  Seattle WA 98121

         If to GTE:

                  GTE Mobilnet of California Limited Partnership, GTE Mobilnet
                          of Santa  Barbara Limited Partnership and GTE Mobilnet
                          Service Corp.
                  Attn.:  Vice President/ General Manager
                          4410 Rosewood Drive
                          Pleasanton, CA 94588
                  cc:     Regional Counsel
                          4410 Rosewood Drive
                          Pleasanton, CA  94588

Either party hereto may change its address by a notice given to the other 
party in the manner set forth above. Notices given as herein provided shall 
be considered to have been received 5 days after mailing thereof or when 
actually received, whichever occurs first.

        12.    Neither party under this Agreement shall publicly announce or 
disclose the existence of this Agreement, or its contents, any discussions 
relating thereto, or the discussions of the business relationship being 
considered, without the prior consent of the other party or except as may be 
required by law, in which case the party required to make disclosure shall 
give the other party the maximum feasible prior notice of such disclosure.



CONFIDENTIAL DISCLOSURE AGREEMENT                                         PAGE 3


        13.    The provisions of Paragraph 12 of this Agreement and the 
provisions of this Agreement concerning nondisclosure and use of Confidential 
Information and Trade Secrets shall survive the expiration or termination of 
this Agreement.

        14.    This Agreement expresses the entire agreement and 
understanding between the parties respecting the subject matter hereof and 
shall not be modified except by a writing signed by authorized 
representatives of the parties on or after the date hereof.

        15.    The persons executing this Agreement for and on behalf of the 
parties hereto represent that they are fully authorized to do so for and on 
behalf of their respective principals.

        16.    The parties hereto recognize and agree that money damages are 
an inadequate remedy for breach of this Agreement by the receiving party and 
further recognize that breach of this Agreement by the receiving party would 
result in irreparable harm to the transmitting party. Accordingly, in the 
event of a breach or threatened breach by the receiving party, the receiving 
party may be enjoined from engaging in any activity prohibited by this 
Agreement by injunction issued by a court of competent jurisdiction. In any 
suit, proceeding or action to enforce any term, condition or covenant of this 
Agreement or to procure an adjudication or determination of the rights of the 
parties hereto, the prevailing party shall be entitled to recover from the 
other party reasonable sums as attorneys' fees and costs and expenses in 
connection with such suit, proceeding or action, including actions taken 
prior to a lawsuit, and including an appeal, which sums shall be included in 
any judgment or decree entered therein. If neither party wholly prevails, the 
party that substantially prevails shall be awarded reasonable attorneys' fees 
and related costs and expenses.

        IN WITNESS WHEREOF, the parties hereto have executed this Agreement 
as of the effective date first written above.

CELLULAR TECHNICAL SERVICES COMPANY, INC.

By: /s/ Kyle R. Sugamele
    ----------------------------------------------------
Title: Vice President and General Counsel
      --------------------------------------------------
Date:
     ---------------------------------------------------

GTE MOBILNET SERVICE CORP.

By: /s/ Benjamin E. Kahrnoff
    ----------------------------------------------------
Title: Vice President/ General Manager-California Region
      --------------------------------------------------
Date:
     ---------------------------------------------------

GTE MOBILNET OF CALIFORNIA LIMITED PARTNERSHIP by GTE MOBILNET INCORPORATED, 
its GENERAL PARTNER

By: /s/ Benjamin E. Kahrnoff
    -----------------------------------------------------
Title : Vice President/ General Manager-California Region
       --------------------------------------------------
Date:
     ----------------------------------------------------

CONFIDENTIAL DISCLOSURE AGREEMENT                                         PAGE 4


EXHIBIT 11.1   COMPUTATION OF EARNINGS PER SHARE

                    CELLULAR TECHNICAL SERVICES COMPANY, INC.

                       COMPUTATION OF EARNINGS PER SHARE

                     (in 000's, except per share amounts)
                                (unaudited)

                                                          Three Months Ended
                                                              March 31,
                                                        ----------------------
                                                         1997            1996
                                                        ------          ------

Primary earnings per share:
  Net income (loss) for calculation
  of primary earnings per share                       $  4,414        $ (2,501)
                                                      --------        --------
                                                      --------        --------
Weighted average number of shares outstanding           22,639          21,609
Dilutive effect of outstanding stock options - based
  upon the Treasury Stock Method using average
  market price1                                          1,072
                                                      --------        --------
Weighted average number of shares, as adjusted, for
  calculation of primary earnings per share             23,711          21,609
                                                      --------        --------
                                                      --------        --------
Primary earnings (loss) per share2                     $   .19         $  (.12)
                                                      --------        --------
                                                      --------        --------

- -----------------------------------
1  Common Stock equivalent shares have not been considered in the calculations
   for the three month period ended March 31, 1996 because the effect would be
   antidilutive.

2  Fully diluted earnings per share computations are not included since they
   would not materially change results presented on the primary earnings per 
   share basis.

                                    Page 12

 


5 THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION FROM THE ACCOMPANYING FINANCIAL STATEMENTS AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS. 3-MOS DEC-31-1997 MAR-31-1997 4,706,389 0 12,532,830 176,892 7,361,209 25,161,023 6,846,858 3,075,446 32,597,647 9,977,214 0 0 0 22,641 22,597,792 32,597,647 16,825,836 17,367,519 7,326,613 13,001,473 0 0 0 4,414,467 0 4,414,467 0 0 0 4,414,467 .19 .19