1

                                                                   EXHIBIT 10.35



                          AGREEMENT NO. 980427 BETWEEN



                      SOUTHWESTERN BELL TELEPHONE COMPANY

                                  PACIFIC BELL

                                  NEVADA BELL

                         SOUTHERN NEW ENGLAND TELEPHONE


                                      AND



                           HIGHWAYMASTER CORPORATION



                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.

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                                                            Agreement No. 980427
                                                                           INDEX
                                                                    Page 1 of 85




                                     INDEX


                                                                                 
SECTION A - TERMS & CONDITIONS APPLICABLE TO ENTIRE AGREEMENT
PREAMBLE                                                                         8
SCOPE OF AGREEMENT                                                               8
DEFINITIONS                                                                      9
     1.  ACCEPTANCE DATE                                                         9
     2.  ACCEPTANCE PERIOD                                                       9
     3.  ACCEPTANCE TEST                                                        10
     4.  DELIVERY DATE                                                          10
     5.  DOCUMENTATION                                                          10
     6.  DOWNTIME                                                               10
     7.  EFFECTIVE DATE                                                         10
     8.  ENTERPRISE LICENSE                                                     10
     9.  FIELD ENGINEER                                                         11
     10. GPS MATERIAL                                                           11
     11. INSTALLATION ACCEPTANCE                                                12
     12. INSTALLATION DATE                                                      13
     13. INSTALLATION SITE                                                      13
     14. INTELLECTUAL PROPERTY                                                  13
     15. LICENSE FEE                                                            14
     16. LICENSED SOFTWARE                                                      14
     17. ORDER                                                                  14
     18. PREVENTIVE MAINTENANCE                                                 14
     19. PRINCIPAL PERIOD                                                       15
     20. PRODUCT                                                                15






                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   3
                                                            Agreement No. 980427
                                                                           INDEX
                                                                    Page 2 of 85





                                                                            

SECTION A - TERMS & CONDITIONS APPLICABLE TO ENTIRE AGREEMENT
     21. PROGRAM MATERIAL                                                       15
     22. REMEDIAL MAINTENANCE                                                   15
     23. SERVICES                                                               15
     24. SOFTWARE                                                               15
     25. SYSTEM                                                                 16
ACCEPTANCE OF GPS MATERIAL AS SUCH                                              16
ACCESS                                                                          17
AFFILIATED COMPANY                                                              18
AMENDMENTS AND WAIVERS                                                          18
ASSIGNMENT                                                                      19
CABLES AND RELATED ITEMS                                                        19
CELLULAR SERVICE                                                                19
CHANGES AND SUSPENSIONS                                                         20
CHANGES TO GPS MATERIAL                                                         21
CLEAN UP                                                                        21
COMPLAINTS                                                                      21
COMPLIANCE WITH LAWS                                                            22
CONFLICT OF INTEREST                                                            23
CONTINUING AVAILABILITY OF PARTS, MAINTENANCE AND TECHNICAL SUPPORT SERVICES    23
CURE                                                                            24
DELIVERY                                                                        24
DEPLOYMENT SCHEDULE & PHASED IMPLEMENTATION                                     25
DISPUTES AND DISPUTE RESOLUTIONS                                                29
DOCUMENTATION                                                                   29





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   4

                                                            Agreement No. 980427
                                                                           INDEX
                                                                    Page 3 of 85





                                                                                               

SECTION A - TERMS & CONDITIONS APPLICABLE TO ENTIRE AGREEMENT
EMERGENCY EQUIPMENT                                                             29
ENGINEERING, DESIGN AND DEVELOPMENT SERVICES                                    30
FOB                                                                             31
FORCE MAJEURE                                                                   31
GOVERNING LAW                                                                   32
GRADE OF SERVICE                                                                32
GSM FOR PACIFIC BELL                                                            32
HAZARDOUS MATERIALS AND REGULATED SUBSTANCES                                    34
HEADINGS                                                                        35
HWM'S LIMITATION                                                                35
INDEPENDENT CONTRACTOR                                                          36
INFRINGEMENT                                                                    36
INSPECTION                                                                      37
INSTALLATION                                                                    38
INSURANCE                                                                       38
LIABILITY                                                                       39
LICENSES & PATENTS                                                              40
M/WBE-DVBE PARTICIPATION PLANS AND REPORT                                       40
MBE/WBE/DVBE CANCELLATION                                                       40
MOST FAVORED CUSTOMER                                                           42
NO THIRD PARTY BENEFICIARY                                                      43
NON-EXCLUSIVE MARKET RIGHTS                                                     43
NON-INTERVENTION                                                                43
NON-WAIVER                                                                      43
NOTICES                                                                         44






                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   5
                                                            Agreement No. 980427
                                                                           INDEX
                                                                    Page 4 of 85





                                                                               

SECTION A - TERMS & CONDITIONS APPLICABLE TO ENTIRE AGREEMENT
ONGOING PERFORMANCE OF REMOTE PANIC ALARM                                       45
ORDER ACCEPTANCE                                                                45
ORDER OF PRECEDENCE                                                             45
PERSONNEL EMPLOYMENT                                                            45
PLANT AND WORK RULES                                                            46
POINTS OF CONTACT                                                               46
PRICES AND PAYMENT                                                              46
PRICE PROTECTION                                                                47
PUBLICITY                                                                       48
PURCHASE AUTHORIZATION                                                          48
PURCHASE PROVISIONS                                                             49
QUALITY ASSURANCE                                                               49
RECORDS AND AUDIT                                                               51
REGISTRATION                                                                    51
RELEASES VOID                                                                   51
RELOCATION                                                                      52
REMEDIES CUMULATIVE                                                             52
RESPONSIBILITIES                                                                52
RISK OF LOSS                                                                    53
SBC AND HWM  INFORMATION                                                        53
SEVERABILITY                                                                    53
SHIPPING AND BILLING                                                            54
SITE PREPARATION                                                                55
SURVIVAL OF OBLIGATIONS                                                         55
TAXES                                                                           56





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
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                                                            Agreement No. 980427
                                                                           INDEX
                                                                    Page 5 of 85





                                                                       


SECTION A - TERMS & CONDITIONS APPLICABLE TO ENTIRE AGREEMENT
TECHNICAL REQUIREMENTS AND SPECIFICATIONS                                       58
TERMINATION AND CANCELLATION                                                    58
TIME IS OF THE ESSENCE                                                          59
TIMELY PERFORMANCE                                                              59
TITLE                                                                           59
TRADE-INS                                                                       59
TRAINING                                                                        60
TRANSPORTATION                                                                  60
UNIVERSAL DESIGN                                                                61
WARRANTY                                                                        62
WORK DONE BY OTHERS                                                             64
WORK HEREUNDER                                                                  64

SECTION B - SOFTWARE LICENSE
GENERAL                                                                         65
GRANT OF LICENSE                                                                65
DOCUMENTATION UPDATES                                                           65
ERROR CORRECTIONS                                                               66
FORM OF ORDER                                                                   68
INSTALLATION OF SOFTWARE                                                        68
SOFTWARE PRODUCT DELIVERY & INSTALLATION                                        69
RELOCATION OF SOFTWARE                                                          70
RETURN OF SOFTWARE                                                              71
RIGHT TO REPRODUCE GPS MATERIAL AND DOCUMENTATION                               71
RISK OF LOSS                                                                    71



                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   7
                                                            Agreement No. 980427
                                                                           INDEX
                                                                    Page 6 of 85






                                                                               
SECTION B - SOFTWARE LICENSE
SOFTWARE UPDATES                                                                72
SOURCE AVAILABILITY AND SOURCE CODE ESCROW                                      73
SOURCE CODE                                                                     76
STANDARD OF PERFORMANCE                                                         76
TITLE                                                                           77
USE OF THE SOFTWARE                                                             77
USE OF PLATFORMS                                                                77
WARRANTY                                                                        77

SECTION C - GPS MATERIAL MAINTENANCE SERVICES
GENERAL                                                                         80
ACCESS                                                                          80
BASIC SERVICE                                                                   80
ENGINEERING CHANGES                                                             81
ESCALATION PROCEDURE                                                            82
FORM OF ORDER                                                                   82
MAINTENANCE BY OTHERS                                                           83
MAINTENANCE LOG                                                                 83
PARTS                                                                           83
PARTS INVENTORY                                                                 83
REMEDIAL MAINTENANCE                                                            84
STORAGE AND WORK SPACE                                                          84
TERM OF ORDER                                                                   85
TIME AND MATERIAL                                                               85


SECTION D - HWM NETWORK SERVICES
GENERAL                                                                         86






                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
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                                                            Agreement No. 980427
                                                                           INDEX
                                                                    Page 7 of 85





                                                                              
SCOPE OF RESPONSIBILITY                                                         86
ALARM MONITORING                                                                90

SECTION E - ENTIRE AGREEMENT
ENTIRE AGREEMENT                                                                91


Appendix I           GPS Specifications
Appendix II          Pricing
Appendix III         Change Order
Appendix IV          Executive Orders and Associated Regulations
Appendix V           HWM's Quality Program Specifications

Exhibit A            PRIME SUPPLIER MBE/WBE/DVBE PARTICIPATION PLAN
Exhibit B            PARTICIPATION PLANS AND RESULTS REPORTS





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   9
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                    Page 8 of 85





SECTION A - TERMS & CONDITIONS APPLICABLE TO ENTIRE AGREEMENT
PREAMBLE

This agreement ("Agreement") is made and entered into by and between
Southwestern Bell Telephone Company, Pacific Bell, Nevada Bell and Southern New
England Telephone (collectively "SBC") and HighwayMaster Corporation ("HWM") to
provide for acquisition, support and development of a Global Positioning
Satellite ("GPS") System and associated material ("GPS Material").  This
Agreement shall be effective as of the date of its execution by the last of the
parties hereto as defined below and, unless otherwise extended or terminated,
shall expire on December 31, 2001, whichever occurs first.  SBC's liability for
HWM's costs and termination fees through the date of termination, as set forth
in the "Purchase Authorization" section below, shall survive termination or
expiration of this Agreement for any reason whatsoever, except for cancellation
of this Agreement as a result of HWM's failure to cure a material breach during
the applicable cure period (see, Termination and Cancellation paragraph).
Prior to delivery of Phase 2 requirements, only a failure to deliver GPS
Material failing to meet Phase 1 requirements as set forth in the GPS
specifications ("GPS Specifications"), attached hereto as Appendix I, and by
this reference made a part hereof (defined in the Deployment Schedule below) or
Installation services that do not conform with the GPS Specifications and are
materially defective will be considered a HWM material breach.  With the
execution of this Agreement, Agreement No. 980374 will be replaced in its
entirety with this Agreement.

SCOPE OF AGREEMENT

This Agreement is applicable to the procurement by SBC from HWM of Global
Positioning System (GPS) material ("GPS Material") specified in Orders
submitted by SBC and any Software System and Services that have been announced
by HWM on or before the effective date hereof and, unless HWM notifies SBC to
the contrary, material, Software, Systems and Services available after such
effective date.  The terms and conditions of this Section A will apply to all
other sections of this Agreement.

The provisions of this Agreement shall apply to all contracts entered into
between HWM and SBC during the term of this Agreement with respect to the GPS
Material and Services which are the subject of this Agreement unless the
parties expressly agree otherwise by a written modification to this Agreement,
signed by the persons who executed this Agreement or their authorized
representatives.   In





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   10
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                    Page 9 of 85





SCOPE OF AGREEMENT (CONTINUED)

the absence of such a modification to this Agreement or such separate
agreement, any terms in any other contract which are additional to, different
from or inconsistent with the provisions of this Agreement shall be deemed to
be void and of no effect whatsoever.

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]The prices quoted in
this Agreement are based on the services outlined in Phases 1, 2 and 3 below.
Pricing for future requirements, including development Phase 4 and beyond, will
be negotiated as they are defined.

DEFINITIONS

For the purposes of this Agreement, all terms defined herein will have the
meanings so defined, unless the context clearly indicates otherwise.  A term
defined in the singular will include the plural and vice versa when the context
so indicates.  As used in this Agreement, the following terms shall have the
definitions set forth below:

         1.      ACCEPTANCE DATE

         "ACCEPTANCE DATE" MEANS THE LAST DAY OF AN ACCEPTANCE PERIOD IN WHICH
         A PRODUCT HAS SUCCESSFULLY COMPLETED THE ACCEPTANCE TESTS.  IF SBC
         WAIVES THE ACCEPTANCE TEST(S) FOR ANY PRODUCT IN WRITING, THE
         ACCEPTANCE DATE FOR SUCH PRODUCT WILL BE THE INSTALLATION DATE FOR
         SUCH PRODUCT.  FOR ANY MAINTENANCE, SUPPORT OR OTHER SERVICE FOR WHICH
         AN ACCEPTANCE TEST IS NOT REQUIRED, THE ACCEPTANCE DATE WILL BE THE
         EFFECTIVE DATE.

         2.      ACCEPTANCE PERIOD

         "Acceptance Period" means a period of fifteen (15) consecutive
         calendar days (or the period specified in the Order) during which the
         Acceptance Test(s) for a Product is/are performed.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   11
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 10 of 85





DEFINITIONS (CONTINUED)

         3.      ACCEPTANCE TEST

         "Acceptance Test" means the performance and reliability demonstrations
         and tests defined herein that must be successfully completed by a
         Product during the Acceptance Period which may include but will not
         necessarily be limited to:  (1) successful completion of SBC's routine
         business transactions, (2) tests, demonstrations or transactions
         performed during any HWM benchmarking, and (3) any other tests,
         demonstrations or transactions included or referenced in the GPS
         Specifications or which are appropriate to determine whether the
         Product conforms to the requirements of the GPS Specifications.

         4.      DELIVERY DATE

         "Delivery Date" means the date by which all items and parts of the GPS
         Material as ordered are delivered to the destination specified in the
         applicable Order.

         5.      DOCUMENTATION

         "Documentation" will include, but not be limited to, user and system
         manuals, training materials in machine readable or printed form.

         6.      DOWNTIME

         "Downtime" means that period of time during which a Product is not
         operating in accordance with the requirements of an Order or the GPS
         Specifications as defined herein through no fault of SBC.  Unless
         otherwise specified herein or in an Order accepted by HWM, downtime
         for each malfunction will start when SBC contacts HWM's designated
         representative at a prearranged contact point and will end when the
         GPS Material is operating in accordance with the requirements of the
         Order or GPS Specifications.

         7.      EFFECTIVE DATE

         "Effective Date" means the date shown on an Order which is the
         beginning date for such Order.

         8.      ENTERPRISE LICENSE

         "Enterprise License" means Products may be used at any location, on
         any platform and by any number of Users.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   12
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 11 of 85





DEFINITIONS (CONTINUED)

         9.      FIELD ENGINEER

         "Field Engineer" means a person in HWM's employ qualified to repair
         GPS Materials in a timely and professional manner.

         10.     GPS MATERIAL

         "GPS MATERIAL" means an in-vehicle monitoring system as more
         specifically defined in the GPS Specifications Document attached
         hereto but at a minimum consisting of:


                                                                   
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[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST                      [TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST
FOR CONFIDENTIAL TREATMENT. THE OMITTED                           FOR CONFIDENTIAL TREATMENT. THE OMITTED
MATERIAL HAS BEEN FILED SEPARATELY WITH THE                       MATERIAL HAS BEEN FILED SEPARATELY WITH THE
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   13
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 12 of 85





                                                                   
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------
[Text has been omitted pursuant to a request                      [Text has been omitted pursuant to a request
for confidential treatment. The omitted                           for confidential treatment. The omitted
material has been filed separately with the                       material has been filed separately with the
SEC.]                                                             SEC.]
- -------------------------------------------------------------------------------------------------------------------


          [Text has been omitted pursuant to a request for confidential
    treatment. The omitted material has been filed separately with the SEC.]

 [TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. 
          THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]

         11.     INSTALLATION ACCEPTANCE

         "INSTALLATION ACCEPTANCE" for the purpose of this Agreement means only
         the acceptance of the installation of the GPS Material and not the
         acceptance of the GPS Material as such.  Installation Acceptance shall
         occur when the installed GPS Materials are demonstrated to SBC to be
         operational through:





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   14
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 13 of 85





DEFINITIONS (CONTINUED)

         11.     INSTALLATION ACCEPTANCE (CONTINUED)

         [TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL
                 TREATMENT. THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH
                 THE SEC.]12.   INSTALLATION DATE

         "Installation Date" means the date by which all components of a
         Product or System are installed and prepared for Acceptance Tests at
         the location specified in the applicable Order.  The Installation Date
         for Software and GPS Material includes delivery of Software, manuals
         and supporting Documentation.  The Installation Date may differ from
         one Installation Site to another.

         13.     INSTALLATION SITE

         "Installation Site" means the vehicle or work station location,
         established by SBC, in which the GPS Material will reside.  The
         Installation Site(s) for each Product will be identified in the
         applicable Order.

         14.     INTELLECTUAL PROPERTY

         "Intellectual Property" means all copyrights, patents, mask works,
         trade secrets, or other rights associated with any ideas, concepts,
         techniques, inventions, processes, or works of authorship





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   15
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 14 of 85





DEFINITIONS (CONTINUED)

         15.     LICENSE FEE

         "License Fee(s)" means the fee associated with licensing of Product(s)
         from HWM.

         16.     LICENSED SOFTWARE

         "Licensed Software" means a standard computer program with respect to
         which HWM has the right to grant SBC a license or sublicense to use
         same.  Licenses are granted as either perpetual or periodic, exclusive
         or non-exclusive, for which HWM may or may not receive a License Fee.
         Licensed Software also includes all associated Documentation.

         17.     ORDER

         "Order" means an SBC document executed hereunder ordering GPS Materials
         and/or Services and will be deemed to incorporate (1) the provisions of
         this Agreement (including the Exhibits attached hereto), as it may from
         time to time be amended, (2) the GPS Specifications applicable to such
         Order and (3) any subordinate documents attached to or referenced in
         this Agreement, such GPS Specifications or such Order. Each Order will
         be deemed to be a separate and independent agreement between the
         parties with respect to the subject matter thereof.

         18.     PREVENTIVE MAINTENANCE

         "Preventive Maintenance" means maintenance performed or required to be
         performed by HWM on a scheduled basis to keep the GPS Material in good
         operating condition in accordance with the requirements of the
         applicable Order.  Preventive Maintenance, if applicable, will include
         (1) calibration, testing, adjustments, cleaning, lubrication,
         replacement of worn, defective or questionable parts, (2) maintenance
         and engineering services necessary to retrofit or otherwise install
         engineering changes, modifications and improvements (including the
         latest engineering revision and all reliability improvements) approved
         by HWM for SBC's configuration/environment as mutually agreed upon by
         SBC and HWM and made to any GPS Material by HWM at any time during the
         maintenance term for that GPS Material; and (3) automatic update
         services for all manuals and Documentation furnished with any GPS
         Material.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   16
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 15 of 85






DEFINITIONS (CONTINUED)

         19.     PRINCIPAL PERIOD

         "Principal Period" means a consecutive ten (10)-hour period daily,
         Monday through Friday, excluding New Year's Day, Washington's
         Birthday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day
         and Christmas Day that HWM will install or perform maintenance
         services.  Unless otherwise specified in the Order, such ten (10) hour
         period will be from 8:00 p.m. to 6:00 a.m. based on the local time in
         each SBC or Affiliated Company's city.

         20.     PRODUCT

         "Product" means any GPS Material, Software or System acquired by SBC
         hereunder as described herein.

         21.     PROGRAM MATERIAL

         "Program Material" means all material associated with Software ordered
         hereunder including, but not limited to, test data, flow charts,
         Documentation, data file listings, input and output formats.  Program
         Material expressly excludes source code and source code listings.

         22.     REMEDIAL MAINTENANCE

         "Remedial Maintenance" means maintenance performed by HWM which is
         necessary to return inoperative or malfunctioning GPS Material to good
         operating condition.

         23.     SERVICES

         "Services" means any service specified in an Order including, but not
         limited to, any programming service, Preventive Maintenance, Remedial
         Maintenance, software maintenance, technical consultation services,
         and support services.

         24.     SOFTWARE

         "Software" means custom Software and Licensed Software, including any
         associated compiled program, routine, subroutine translation,
         compiler, diagnostic routine, control software, and firmware.
         Software does not include source code, source code listings and
         similar raw component formats.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   17
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 16 of 85





DEFINITIONS (CONTINUED)

         25.     SYSTEM

         "System" means any collection or aggregation of two (2) or more GPS
         Materials designed to function, or represented by HWM as being capable
         of functioning, as an entity.

ACCEPTANCE OF GPS MATERIAL AS SUCH

SBC reserves the right to accept or reject GPS Materials fifteen (15) days
after delivery at the location designated in the applicable order.  If, prior
to Acceptance by SBC, any of the GPS Materials or Services are found to not be
in strict conformance with this Agreement, including the GPS Specifications,
SBC shall have the right:  (a) to reject the GPS Materials or Services and,
after providing HWM with written notice and an opportunity to cure as set forth
in this Agreement, cancel the Agreement and any applicable order and return any
GPS Materials or (b) at its option (1) in the case of GPS Materials, require
that such GPS Materials be repaired or replaced promptly at HWM's risk and
expense (including freight charges) within thirty (30) days and (2) in the case
of Services, require the performance or reperformance of such Services.
Acceptance of GPS Materials by SBC shall be without prejudice to SBC's right to
revoke acceptance pursuant to the Uniform Commercial Code.  SBC will conduct
and complete acceptance testing, using its best efforts to complete acceptance
for each phase, release or shipment on the day of delivery and installation.
In the event that acceptance is not possible on the day of installation, SBC
will provide a single contact person with authority to sign off on acceptance,
by region, and will use its best efforts to sign off on acceptance or rejection
within two (2) weeks after installation.  SBC's acceptance testing will consist
of tests to determine whether the GPS Materials meet the GPS Specifications.
After acceptance of any phase, release or shipment, any subsequent failures of
the GPS Material to meet the GPS Specifications applicable to such phase or
release shall be handled under applicable warranty provisions.

IF HWM IS UNABLE TO DELIVER GPS MATERIAL THAT MEETS THE PHASE 1 SPECIFICATIONS
AS SET FORTH IN THE GPS SPECIFICATIONS, OR IS UNABLE TO INSTALL SUCH MATERIALS
IN ACCORDANCE WITH THE GPS SPECIFICATIONS, BY THE END OF THE APPLICABLE CURE
PERIOD FOR DELIVERY AND INSTALLATION OF PHASE 1 FUNCTIONALITY,  SBC WILL HAVE
THE RIGHT TO RECEIVE A REFUND EQUAL TO 100% OF AMOUNTS





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   18
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 17 of 85





ACCEPTANCE OF GPS MATERIAL AS SUCH (CONTINUED)

PAID TO HWM EXCEPT FOR NETWORK SERVICE CHARGES, UPON SBC'S RETURN OF THE GPS
MATERIAL IN GOOD WORKING ORDER, NORMAL WEAR AND TEAR EXCLUDED.

IF HWM IS UNABLE TO DELIVER AND INSTALL GPS MATERIAL THAT MEETS THE PHASE 2 AND
PHASE 3 SPECIFICATIONS AS SET FORTH IN THE GPS SPECIFICATIONS, BY THE END OF
THE APPLICABLE CURE PERIOD FOR DELIVERY AND INSTALLATION OF SUCH GPS MATERIAL,
SBC SHALL HAVE THE RIGHT TO REVOKE ITS PREVIOUS ACCEPTANCE AND RECEIVE A REFUND
EQUAL TO EIGHTY-FIVE PERCENT (85%) OF THE AMOUNTS PAID BY SBC TO HWM EXCEPT FOR
NETWORK SERVICE CHARGES, UPON SBC'S RETURN OF THE GPS MATERIAL IN GOOD WORKING
ORDER, NORMAL WEAR AND TEAR EXCLUDED.

ACCESS

SBC's Premises:

1.       HWM shall when appropriate have reasonable access to SBC's premises
         during normal business hours and at such other times as may be agreed
         upon by the parties in order to enable HWM to perform its obligations
         under this Agreement.  HWM shall coordinate such access with SBC's
         designated representative prior to visiting such premises.  HWM
         assures SBC that only persons employed by HWM or subcontracted by HWM
         will be allowed to enter SBC's premises.  If SBC requests HWM or it's
         Subcontractor to discontinue furnishing any person provided by HWM or
         it's Subcontractor from performing work on SBC's premises, HWM shall
         immediately comply with such request.  Such person shall leave SBC's
         premises promptly and HWM shall not furnish such person again to
         perform work on SBC's premises without SBC's written consent.

2.       SBC may require HWM or its subcontractor employees to exhibit
         identification credentials, which SBC may issue in order to gain
         access to SBC's premises for the performance of Services hereunder.
         If, for any reason, any HWM's or HWM's subcontractor employees are no
         longer performing such Services, HWM shall immediately inform SBC.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   19
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 18 of 85





ACCESS (CONTINUED)

         Notification shall be followed by the prompt delivery to SBC of the
         identification credentials, if issued by SBC, or a written statement
         of the reasons why said identification credentials cannot be returned.

3.       HWM shall ensure that its personnel and subcontractor perform work
         which conforms to SBC's practices and handbooks to protect GPS
         Material, buildings or structures and to perform Services with care
         and due regard for the safety, convenience and protection of SBC, its
         employees and property, and members of the public.

4.       In the event of theft or loss of property attributable to HWM, HWM
         shall replace the property and/or reimburse SBC for replacement value
         of the item.

5.       HWM shall be responsible for ensuring that all persons furnished by
         HWM work harmoniously with all others when on SBC's premises.

AFFILIATED COMPANY

"Affiliated Company" as used herein will be any present or future subsidiary,
affiliate or parent company of SBC.  Subject to acceptance of an Order by HWM,
in accordance with the Order Acceptance clause herein, any Affiliated Company
that places an Order with HWM hereunder may incorporate into such Order the
terms and conditions of this Agreement.  Such Affiliated Company will be
responsible for its own obligations including, but not limited to, charges
incurred in connection with such Order.  Nothing in this Agreement will be
construed as requiring SBC to indemnify HWM for any acts or omissions of any
Affiliated Company.

AMENDMENTS AND WAIVERS

This Agreement may be amended or modified only by a written document signed by
the authorized representative of the party against whom enforcement is sought.
No course of dealing or failure of either party to strictly enforce any term,
right or condition of this Agreement shall be construed as a general waiver or
relinquishment of such term, right or condition.  Waiver by either party of any
default shall not be deemed a waiver of any other default.

ASSIGNMENT

Neither party hereto may assign, subcontract or otherwise transfer it's rights
or obligations under this Agreement except with the prior written consent of
the other party hereto, which consent will not be unreasonably withheld;
provided, however, SBC will have the right to assign this Agreement to any
present or future AFFILIATE, SUBSIDIARY OR PARENT CORPORATION of SBC, without
securing the consent of HWM and may grant to any such assignee the same rights
and privileges SBC enjoys hereunder.  Any attempted assignment not assented to
in the manner prescribed herein, except an assignment confined solely to money
due or to become due, will be void.  It is expressly agreed that any assignment
of money will be void if (a) HWM fails to give SBC at least thirty (30) days
prior written notice thereof, or (b) such assignment imposes or attempts to
impose upon SBC additional costs or obligations in addition to the payment of
such money or (c) denies, alters or attempts to alter any of SBC's rights.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   20
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 19 of 85



CABLES AND RELATED ITEMS

Each Order will be deemed to include, at no additional charge unless otherwise
specified, all cables necessary to operate all ordered Product at SBC's
Installation Site in accordance with the GPS Specifications.  CELLULAR SERVICE

The actual cellular service for the purpose of this Agreement will be provided
by HWM as follows, in addition to the monthly Network Services fees as outlined
in Appendix II, Pricing, attached hereto and by this reference made a part
hereof:

[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE
OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]CELLULAR SERVICE
(CONTINUED)[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL
TREATMENT. THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]

CHANGES & SUSPENSIONS

1.       SBC may, by notice to HWM at any time before complete delivery is made
         under any Order, request changes via a written Change Order, attached
         hereto as Appendix III, and by this reference made a part hereof
         within the general scope of such Order, including changes to
         quantities, drawings, designs or GPS Specifications.  Within a
         reasonable time of receipt of the written Change Order, HWM shall
         provide SBC with a Response to the Change Order including at a minimum
         the estimated changes to prices, delivery dates, and the feasibility
         of the implementation of changes to the GPS Specifications.  SBC and
         HWM must agree in writing to acceptance of the Change Order, including
         any adjustments in prices or dates necessitated thereby and shall
         execute a written revised Order reflecting such adjustments.

2.       HWM may not, under any circumstances, rely on oral modifications to
         any Order made under this Agreement.

3.       If HWM desires to modify the Products and/or Services specified in any
         Order, HWM shall provide written notice to SBC of the requested
         modifications.  SBC shall provide a written response to the request
         within fifteen (15) days of the date of receipt of the request from
         HWM.  SBC shall approve the request if the Products and/or Services,
         as modified, conform to the GPS Specifications.  SBC has the right to
         test any new,





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   21
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 20 of 85





CHANGES & SUSPENSIONS

         changed or revised Products and/or Services or have it tested by its
         third party subcontractor prior to approval.  If the Products and/or
         Services do not conform to the GPS Specifications, SBC shall have the
         right to reject such changes or modifications.  In addition, SBC shall
         reserve the right to determine whether a new software change is
         applied.

CHANGES TO GPS MATERIAL

If HWM desires to modify the GPS Materials, HWM shall provide samples of the
GPS Materials and written notice to SBC of the requested modifications.  SBC
shall provide a written response to the request within thirty (30) days of the
date of receipt of the request from HWM.  SBC shall approve the request if the
GPS Materials, as modified, conform to the GPS Specifications.  For purposes of
this clause, GPS Materials include GPS receiver, antenna, cellular Transceiver
and cellular antenna, microprocessor, handset, power supply, panic alarm, key
fob, modem and installation components such as the pedestal.

SBC has the right to test any new, changed or revised GPS Material or have it
tested by its third party subcontractor prior to approval.  If the GPS Material
does not conform to the GPS Specifications, SBC shall have the right to reject
such changes or modifications.  In addition, SBC shall reserve the right to
determine whether the new GPS Material is acceptable.

CLEAN UP

Upon completion of the installation of any Product hereunder, HWM will remove
promptly all HWM's tools, equipment, materials and debris from SBC's premises.

COMPLAINTS 

SBC reserves the right to notify HWM in cases where SBC has identified current
or potential problems or service area concerning the operation, maintenance,
engineering, installation or design of GPS Material furnished hereunder.
Whenever SBC exercises such right, HWM agrees to:

1.  Accept such notice (hereinafter referred to as an "Engineering Complaint")
    and respond appropriately to resolve the Engineering Complaint.  HWM agrees
    to review the standards contained in Bell Communications Research,





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   22
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 21 of 85






COMPLAINTS (CONTINUED)

         Inc. ("Bellcore") technical publication GR-230-CORE, Issue 1,
         September 1994, entitled "Engineering Complaints and Service Failure
         Analysis Reports" during the ninety (90) days following the execution
         of this Agreement so that it can determine whether it is feasible for
         HWM to comply with these standards. If it is economically and
         operationally feasible for HWM to comply with the Bellcore standards
         without material additional operational expense on HWM's part, HWM
         agrees to use its best effort to comply.

2.       Acknowledge receipt of such Engineering Complaint and advise SBC of
         HWM's proposed organization responsible for resolving it within ten
         (10) working days of HWM's receipt thereof.

3.       Resolve such Engineering Complaints within ninety (90) days calendar
         days of the date of SBC's notice, unless a later date is mutually
         agreed upon by the parties.  If unable to resolve an Engineering
         Complaint within said ninety (90)-day period, HWM will issue an
         "interim report" as defined in GR-230-CORE.

4.       Furnish to SBC a monthly report of the status of open Engineering
         Complaints, in a mutually agreed upon medium, together with a proposed
         schedule for their resolution.

5.       Notify SBC in writing when an Engineering Complaint has been resolved.

COMPLIANCE WITH LAWS 

HWM shall comply with the provisions of the Fair Labor Standards Act, the
Occupational Safety and Health Act and all other applicable federal, state,
county and local laws, ordinances, regulations and codes, including, but not
limited to, the procurement of permits, certificates, approvals, inspections
and licenses when needed, in the performance of this Agreement.

Southwestern Bell Telephone Company, Pacific Bell, and Nevada Bell, as common
carriers of telecommunications services, work as contractors for various
departments and agencies of the United States Government, and, for that reason,
work under their agreements may be subject to certain Executive Orders, laws ,
and associated regulations.  To the extent that such Executive Orders, laws,
and associated regulations apply to work under this agreement, and only to that
extent, HWM agrees to comply with the provisions of Appendix IV, Executive





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   23
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 22 of 85





COMPLIANCE WITH LAWS (CONTINUED)

Orders and Associated Regulations attached hereto and by this reference made a
part hereof.

CONFLICT OF INTEREST

HWM represents and warrants that no officer, director, employee or agent of SBC
has been or will be employed, retained or paid a fee, or otherwise has received
or will receive any personal compensation or consideration, by or from HWM or
any of HWM's officers, director's employees or agents in connection with the
obtaining, arranging or negotiation of this Agreement or other documents or
agreements entered into or executed in connection herewith.

CONTINUING AVAILABILITY OF PARTS, MAINTENANCE AND TECHNICAL SUPPORT SERVICES

1.       HWM agrees to offer for sale to SBC for a period of five (5) years
         after the Termination, Cancellation or expiration date of this
         Agreement, functionally equivalent additions/modifications,
         maintenance, replacement, and technical support services at HWM's then
         current rates for said parts and/or services,

2.       If HWM fails or is unable to supply such parts or obtain another
         source of supply for SBC, then such inability shall be considered
         noncompliance with this Section and, in addition to whatever other
         rights and remedies SBC may have at law or in equity, HWM shall be
         obligated to provide SBC, without obligation or charge, with limited,
         nonexclusive license to the  "technical information" or any other
         rights required so that SBC can have manufactured or can obtain such
         parts from other sources. No right of sublicense is granted herein.

3.       The "technical information" includes, by example and not by way of
         limitation:

         a.      manufacturing drawings and GPS Specifications of raw materials
                 and components comprising such parts;

         b.      manufacturing drawings and GPS Specifications covering special
                 tooling and the operation thereof;

         c.      a detailed list of all commercially available parts and
                 components purchased by HWM, disclosing the part number,





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   24
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 23 of 85





CONTINUING AVAILABILITY OF PARTS, MAINTENANCE AND TECHNICAL SUPPORT SERVICES
(CONTINUED)

         name and location of the supplier and price lists for the purchase
         thereof.

4.       HWM shall provide support for System Software or System Software
         Features provided under this Agreement.  In the event HWM refuses to
         provide support then HWM shall grant to SBC a non-exclusive license,
         without charge, to use such System Software programs, System Software
         documentation and/or System Software tools and other technical
         information as may be required for the purpose of so maintaining the
         System Software and to provide for network compatibility.  No right of
         sublicense is granted to SBC.

5.       HWM shall provide SBC advance written notification no later than two
         (2) years prior to the discontinuance of the manufacture or the
         provision of any GPS Material hereunder.

CURE

SBC will not be deemed to be in default under any of the terms of this
Agreement, and HWM may not seek or attempt to enforce any remedy for any
claimed default, unless SBC fails to cure or correct same within thirty (30)
days following receipt of written notice thereof from HWM.

DELIVERY

HWM agrees to make its best efforts barring complication in procuring parts to
have at least eleven thousand five hundred  (11,500) GPS Units installed by
December 29, 1998.  HWM further agrees to keep SBC informed, in writing, of any
delays in meeting this schedule.

HWM agrees to deliver all GPS Material on the Delivery Dates and to the
Installation Sites specified in the applicable Orders.  SBC may request
delivery in advance of the Delivery Date specified in an Order by notifying HWM
in writing to that effect at least thirty (30) days prior to the specified
Delivery Date.  If such advanced delivery is accepted by HWM, SBC will amend
the Order accordingly.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   25
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 24 of 85





DELIVERY (CONTINUED)

At any time, but not less than thirty (30) days prior to the Delivery Date
specified in an Order, SBC, by written notification to HWM, may delay such
Date, for a period not to exceed thirty (30) days.  HWM will assume full
responsibility for dealing with carriers to insure timely delivery of its
shipments, locate missing or late shipments, resolve billing for transportation
charges and submit and resolve all insurance claims arising from damage to its
shipments.

DEPLOYMENT SCHEDULE AND PHASED IMPLEMENTATION

         GPS MATERIAL INSTALLATION

         HWM shall begin installation of the eleven thousand five hundred
         (11,500) GPS Units on September 15, 1998.  HWM will use its best
         efforts to deliver and install the units by December 29, 1998.  [Text
         has been omitted pursuant to a request for confidential treatment. The
         omitted material has been filed separately with the SEC.] Prices for
         installation are shown on Appendix II, and should be combined on the
         invoice with the GPS Material upon completion of Installation
         Acceptance.  SWBT will remit to HWM payment in full as outlined in the
         clause entitled Prices and Payment.  Installation Acceptance shall be
         completed within two (2) weeks of delivery and installation of such
         shipment.  HWM will deploy installers who will be dedicated an average
         of eight (8) hours per day, five (5) days per week.

         PHASES    

         This clause describes the basic requirements and development items for
         the SBC GPS System.  HWM and SBC agree to complete the GPS
         Specifications that will provide the functionality specified below for
         Phases 1, 2, and 3 as per the dates specified below:

         1.    HWM will develop and present their complete thorough GPS
               Specification to SBC by September 12, 1998.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   26
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 25 of 85





DEPLOYMENT SCHEDULE AND PHASED IMPLEMENTATION (CONTINUED)

         2.    SBC will review and provide comments to HWM on the GPS
               Specifications by September 22, 1998.

         3.    SBC and HWM will meet to resolve any disputes in the GPS
               Specifications.

         Each party agrees to devote the necessary resources to complete the GPS
         Specifications.

         If HWM and SBC cannot resolve any disputes remaining after 3, above,
         HWM's decision will prevail.  However, SBC has the right to escalate
         the dispute directly to a single arbitrator (in accordance with the
         provisions specified in the paragraph of this Agreement called
         "Disputes and Dispute Resolution") to present its case that HWM's
         omission of a GPS Specification is, or inclusion of a GPS
         Specification is not, necessary to meet the GPS System functionality.

         HWM represents and warrants that the GPS Specifications will meet the
         functionality for Phases 1, 2 and 3.

         Once the GPS Specifications are complete and are executed by both
         parties, the GPS Specifications will control over any discrepancies or
         ambiguities between the RFP and the Phase 1, 2 and 3 descriptions in
         this Agreement.

         In developing the GPS Specifications, the parties agree that the scope
         and functionality of the GPS Material will not expand beyond that set
         forth in Phases 1, 2 and 3 herein and in the product specification
         document which is attached hereto .  Any additional or subsequent
         changes will only be made upon the mutual agreement of the parties and
         will be treated as a Change Order, subject to the payment of
         additional development and/or product fees to HWM if SBC requests
         expanded functionality.

HWM agrees to provide the following requirements and functionality as generally
described below and more specifically described in the GPS Specifications
Document attached to this Agreement:





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   27
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 26 of 85






DEPLOYMENT SCHEDULE AND PHASED IMPLEMENTATION (CONTINUED)
[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]
DEPLOYMENT SCHEDULE AND PHASED IMPLEMENTATION (CONTINUED)[TEXT HAS BEEN OMITTED
PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL HAS BEEN
FILED SEPARATELY WITH THE SEC.]
Should HWM not meet the requirements outlined under Phase 2 above, by
delivering the software enhancements necessary to meet the GPS Specifications
to provide such requirements and making it available for Installation by
January 15, 1999, or within a period of thirty (30) days thereafter then, in
addition to all other remedies provided under this Agreement or at law, HWM
agrees to credit or refund SWBT as liquidated damages and not as a penalty, an
amount equal to ten thousand dollars ($10,000) for each month after January,
1999, during any portion of which the delay continues.

Should HWM not meet the requirements outlined under Phase 3 above, by
delivering the software enhancements necessary to meet the GPS Specifications
to provide such requirements and making it available for Installation by
January 15, 1999, or within a period of thirty (30) days thereafter then, in
addition to all other remedies provided under this Agreement or at law, HWM
agrees to credit or refund the entities of Pacific Bell and Nevada Bell as a
whole, as liquidated damages and not as a penalty, an amount equal to ten
thousand dollars ($10,000) for each month after January, 1999, during any
portion of which the delay continues. If HWM should fail to meet this date
through no fault of its own, such as an unforeseen issue, non-performance or
failure of cooperation related to a third party (such as Nokia), the above
liquidated damage clause would not be applicable, and HWM's Delivery Dates
shall be extended in proportion to such delay by a third party.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   28
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 27 of 85








DISPUTES AND DISPUTE RESOLUTION 

Any dispute arising out of or relating to this Agreement or the breach,
Termination, or validity thereof, not settled within thirty (30) days of
written notice of such dispute,  shall be settled by arbitration in accordance
with the then current Center for Public Resources Rules for Non-Administered
Arbitration of Business Disputes by three independent and impartial
arbitrators, of whom each party shall appoint one and the two appointed
arbitrators shall pick a third arbitrator.  The arbitration shall be governed
by the United States Arbitration Act, 9 U.S.C. Sections 1-16 and judgment upon
the award rendered by the arbitrators may be entered by any court having
jurisdiction thereof.  The place of arbitration shall be San Ramon, California,
St. Louis, Missouri, or Dallas, Texas, or their environs at the discretion of
the party requesting arbitration.  The arbitrators are not empowered to award
damages in excess of compensatory damages and each party hereby irrevocably
waives any right to recover such damages with respect to any dispute resolved
by arbitration.  Final and binding arbitration in accordance with the
procedures specified in this Section shall be the sole and exclusive procedure
for the resolution of any such disputes.

DOCUMENTATION

HWM will provide, at no additional cost to SBC, at least two (2) copies of each
update or revision to such original Documentation to each Installation Site and
SBC's General Headquarters.  Additional copies of such Documentation will be
furnished at the then current per copy prices as specified in HWM's price list.

SBC will have the right to reproduce all printed material, Documentation, and
manuals supplied by HWM hereunder, provided that such reproduction is made
solely for SBC's internal use hereunder and includes any HWM copyright notice
contained in the original item being reproduced.

SBC may modify any Documentation for its own use and at its own expense to meet
its specific requirements.

EMERGENCY EQUIPMENT

HWM agrees to make every reasonable effort to assist SBC in locating GPS
Material compatible with that furnished by HWM hereunder in the event of an
emergency, such as a major breakdown, fire or other disaster.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   29
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 28 of 85





EMERGENCY EQUIPMENT (CONTINUED)

SBC, at its option, may accept or reject an offer by HWM to use emergency or
substitute GPS Material.  If accepted, the charge for such use, if any, will be
a limited arrangement between SBC and HWM until permanent replacement GPS
Material is installed and accepted.

ENGINEERING, DESIGN AND DEVELOPMENT SERVICES 

[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE
OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.] [Text has been
omitted pursuant to a request for confidential treatment. The omitted material
has been filed separately with the SEC.]

[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE
OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]

FOB

GPS Material purchased hereunder will be shipped FOB Destination, prepay and
add, in accordance with the requirements of the clauses herein entitled
SHIPPING AND BILLING and TRANSPORTATION.

FORCE MAJEURE

1.       Neither party shall be deemed in default of this Agreement or any
         Order to the extent that any delay or failure in the performance of
         its obligations results from any cause beyond its reasonable control
         and without its fault or negligence, such as acts of God, acts of
         civil or military authority, embargoes, epidemics, war, riots,
         insurrections, fires, explosions, earthquakes, floods, unusually
         severe weather conditions or strikes.

2.       If any Force Majeure condition occurs, HWM shall give immediate notice
         to SBC and SBC may elect to either:  (1) terminate the affected
         Order(s) or any part thereof, (2) suspend the affected Order(s) or any
         part thereof for the duration of the Force Majeure condition, with the
         option to obtain elsewhere GPS Material and Services to be furnished
         under such Order(s) and deduct from any commitment under such Order(s)
         the quantity of the GPS Material and Services obtained or for which
         commitments have been made elsewhere or (3) resume performance under
         such Order(s) once the Force Majeure condition ceases, with an option
         in SBC to extend any affected delivery or performance date up to the
         length of time the Force Majeure condition endured.  Unless SBC gives
         written notice within thirty (30) days after being notified of the
         Force Majeure condition, option (2) shall be deemed selected.

3.       Failure of HWM's subcontractors or suppliers to deliver GPS Material
         or perform Services shall not be deemed a Force Majeure condition
         unless such failure or delay is a result of a Force Majeure
         experienced by HWM's subcontractors or suppliers.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   30
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 29 of 85





GOVERNING LAW

1.       With respect to Pacific Bell and Nevada Bell, this Agreement and
         performance hereunder shall be governed by the laws of the state of
         California.  With respect to Southwestern Bell Telephone Company, this
         Agreement and performance hereunder shall be governed by the laws of
         the state of Missouri.  With respect to Southern New England
         Telephone, this Agreement and performance hereunder shall be governed
         by the laws of the state of Connecticut.

2.       This Agreement shall be considered completed, entered into, and
         executed in California on behalf of Pacific Bell and Nevada, in
         Missouri on behalf of Southwestern Bell Telephone Company and
         Connecticut on behalf of Southern New England Telephone.

GRADE OF SERVICE

The parties agree to develop minimum performance standards to which the GPS
Materials comply.  [Text has been omitted pursuant to a request for
confidential treatment. The omitted material has been filed separately with the
SEC.]

GSM FOR PACIFIC BELL

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]


GSM FOR PACIFIC BELL (CONTINUED)[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST
FOR CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH
THE SEC.]If HWM should fail to meet this date through no fault of its own, such
as an unforeseen issue related to a third party or lack of necessary
cooperation by SBC or its affiliates, the above liquidated damage clause would
not be applicable.  

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   31
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 30 of 85





HAZARDOUS MATERIALS AND REGULATED SUBSTANCES

A "Regulated Substance" as referenced in this clause is a generic term used to
describe all materials that are regulated by the federal or any state or local
government during transportation, handling and/or disposal.  This includes, but
is not limited to, materials that are regulated as (a) "hazardous materials"
under the Hazardous Materials Act and the Control of Radioactive Contamination
of the Environment Law, Title 8 of the California Administrative Code, Section
5194, pursuant to the Hazardous Substances Information and Training Act, (b)
"chemical hazards" under Occupational Safety and Health Administration (OSHA)
standards, (c) "chemical substances or mixtures" under the Toxic Substances
Control Act, (d) "pesticides" under the Federal Insecticide, Fungicide and
Rodenticide Act, and (e) "hazardous wastes" as defined or listed under the
Resource Conservation and Recovery Act and the Hazardous Waste Control Law.

         1.      HWM shall comply with all applicable federal, state and local
                 laws, ordinances, codes, regulations and orders, including any
                 notice requirements (individually and collectively "Laws and
                 Regulations"), regarding any Material and Service ordered
                 hereunder which involves the handling or use of Materials or
                 materials which consist of or contain "hazardous materials" or
                 "chemical hazards" or "chemical substances or mixtures" or
                 "pesticides" or "hazardous wastes".  HWM shall notify SBC and
                 provide to SBC all necessary notification and other
                 information (including but not limited to OSHA Material Safety
                 Data Sheets) at least thirty (30) days before shipping such
                 Regulated Substances to SBC or commencing the performance of
                 Services for SBC involving the handling or use of Regulated
                 Substances.

         2.      Notwithstanding any other provisions of this Agreement, SBC
                 shall have the right, but not the duty, to terminate without
                 liability any Order for Materials or Services which involves
                 the handling or use of Regulated Substances within thirty (30)
                 days after such notification from HWM.  Otherwise, SBC and HWM
                 shall cooperate concerning the acceptance by SBC of such
                 Regulated Substances. HWM shall mark all Materials and/or
                 materials provided hereunder as Regulated Substances which are
                 required by all applicable Laws and Regulations to be so
                 marked, and shall provide assistance to SBC of an advisory
                 nature in the handling or use of Regulated





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   32
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 31 of 85







HAZARDOUS MATERIALS AND REGULATED SUBSTANCES (CONTINUED)

                 Substances provided hereunder and the disposal of "hazardous
                 wastes", as defined by applicable Laws and Regulations
                 ("Hazardous Wastes"), resulting therefrom.

         3.      Regulated Substances and/or Hazardous Wastes provided or
                 removed hereunder shall be transported by HWM in accordance
                 with the requirements of the applicable Laws and Regulations,
                 including, but not limited to, those of the Department of
                 Transportation and California Highway Patrol, governing
                 transportation of such Regulated Substances and/or Hazardous
                 Wastes.

         4.      HWM shall provide SBC with the same information pertaining to
                 Materials and Services which involve the handling or use of
                 Regulated Substances or Hazardous Wastes as HWM provides to
                 HWM's employees or agents involved in the disposition or
                 treatment of such Regulated Substances or Hazardous Wastes.

         5.      HWM further agrees to defend, indemnify and hold SBC harmless
                 from and against any damage, or expense (including attorneys'
                 fees and court costs) sustained by SBC because of HWM's
                 noncompliance herewith.
HEADINGS

Article, section or paragraph headings contained in this Agreement are for
reference purposes only and shall not affect the meaning or interpretation of
this Agreement.

HWM'S LIMITATION

EXCEPT FOR INDEMNITY AND INFRINGEMENT INDEMNITY OBLIGATIONS, SBC'S DAMAGES AND
HWM'S LIABILITY FOR DAMAGES UNDER ALL ORDERS SHALL BE LIMITED TO A REFUND OF
THE AMOUNTS PAID BY SBC FOR THE AFFECTED PRODUCT OR SERVICES.  NEITHER PARTY
SHALL BE LIABLE TO THE OTHER FOR INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
INCLUDING LOST PROFITS.







                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   33
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 32 of 85






INDEPENDENT CONTRACTOR

HWM hereby declares and represents that HWM is engaged in an independent
business and shall perform its obligations under this Agreement as an
independent contractor and not as the agent or employee of SBC; that the
persons performing services hereunder are not agents or employees of the SBC;
that HWM has and hereby retains the right to exercise full control of and
supervision over the performance of HWM's obligations hereunder and full
control over the employment, direction, compensation and discharge of all
employees assisting in the performance of such obligations; that HWM shall be
solely responsible for all matters relating to payment of such employees,
including compliance with workers' compensation, unemployment, disability
insurance, social security, withholding and all other federal, state and local
laws, rules and regulations governing such matters; and that HWM shall be
responsible for HWM's own acts and omissions and those of HWM's agents,
employees and contractors during the performance of HWM's obligations under
this Agreement.

INFRINGEMENT

HWM agrees to indemnify and hold SBC harmless from and against any loss,
liability, damage or expense (including increased damages for willful
infringement, punitive damages, attorneys' fees and court costs) that may
result by reason of any infringement, or claim of infringement, of any trade
secret, patent, trademark, copyright or other proprietary interest of any third
party based on the normal use or installation of any GPS Material, Software,
Documentation, or program furnished to SBC hereunder, except to the extent that
such claim arises from HWM's compliance with SBC's detailed instructions.  Such
exception will not, however, include:

         1.      Merchandise available on the open market or the same as such
                 merchandise.

         2.      Items of HWM's origin, design or selection.

HWM warrants that it has made reasonable independent investigation (including
obtaining legal opinions) to determine the legality of its right to produce and
sell the GPS Material/Equipment provided herein.

If an injunction or order is obtained against SBC's use of any GPS Material,
Software, Documentation, or program, or if in HWM's opinion any GPS Material,





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   34
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 33 of 85






INFRINGEMENT (CONTINUED)

Software, Documentation, or program is likely to become the subject of a claim
of infringement, HWM will, at its expense:

         1.      Procure for SBC the right to continue using the GPS Material,
                 Software, Documentation, program; or

         2.      After consultation with SBC, replace or modify the GPS
                 Material, Software, Documentation, program or Service to make
                 it a substantially similar, functionally equivalent,
                 non-infringing GPS Material, Software, Documentation, program.

If the GPS Material, Software, Documentation, or program is purchased or
licensed and neither (1) or (2) above is possible, SBC may cancel the
applicable Order and require HWM to remove such GPS Material, Software,
Documentation, or program from SBC's location and refund on a prorated basis at
a rate of twenty percent (20%) per year for any charges paid therefor by SBC.

In no event will SBC be liable to HWM for any charges after the date that SBC
no longer uses and GPS Material, Software, Documentation, or program because of
actual or claimed infringement.

Each party hereto agrees to defend or settle, at its own expense, any action or
suit against the other party hereto for which it is responsible under this
clause.  Each party further agrees to notify the other party promptly of any
claim of infringement for which the other party is responsible hereunder and
cooperate in every reasonable way to facilitate the defense thereof.

In the event that HWM, after notification of any claim for which HWM is
responsible, does not assume the defense of such action, HWM will reimburse SBC
for all of its costs incurred in the defense of the claim, including, but not
limited to attorneys' fees and interest on such SBC's payment of said amounts
from the date of SBC's payments of said amounts.

INSPECTION

When so stated in SBC's Order, HWM agrees to (a) notify SBC or SBC's agent when
GPS Material is ready for inspection, (b) give SBC such reasonable opportunity
to inspect such GPS Material at any time prior to the scheduled shipment date,
and (c) provide without charge any production testing facilities and





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   35
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 34 of 85







INSPECTION (CONTINUED)

personnel required to inspect the GPS Material under the inspection
instructions specified.  Purchase of any GPS Material under this Agreement is
subject to SBC's inspection and acceptance after delivery.  It is mutually
agreed that SBC or SBC's agent may develop inspection instructions which will
be made a part of this Agreement at a later date by written agreement of the
parties.  Inspection or failure to inspect on any occasion will not affect
SBC's rights under warranty or other provisions of this Agreement.

INSTALLATION

HWM agrees to install, at the price specified in Appendix II, Pricing, all GPS
Material ordered hereunder, including all necessary cabling, connection with
SBC-supplied power, utility and communications services, and in all other
respects make the GPS Material ready for operational use.

The GPS Material will be deemed installed and ready for operational use at the
conclusion of a successful Acceptance Test performed at the Installation Site
which demonstrates that the GPS Material meets minimum design capabilities.
HWM will provide SBC with written documentation of the successful Acceptance
Test and certify, by the Installation Date, that the GPS Material is ready for
operational use in accordance with SBC's Order.   HWM's General Installation
and Testing Requirements are included in GPS Specifications.

INSURANCE

With respect to performance hereunder, and in addition to HWM's obligation to
indemnify, HWM agrees to maintain, at all times during the term of this
Agreement, the following minimum insurance coverages and limits and any
additional insurance and/or bonds required by law:

1.               Workers' Compensation insurance with benefits afforded under
                 the laws of the state in which the Services are to be
                 performed and Employers Liability insurance with minimum
                 limits of $100,000 for Bodily Injury-each accident, $500,000
                 for Bodily Injury by disease-policy limits and $100,000 for
                 Bodily Injury by disease-each employee.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   36
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 35 of 85





INSURANCE (CONTINUED)

2.       Commercial General Liability insurance with minimum limits of:
         $2,000,000 General Aggregate limit; $1,000,000 each occurrence
         sub-limit for all bodily injury or property damage incurred in any one
         occurrence; $1,000,000 each occurrence sub-limit for Personal Injury
         and Advertising; $2,000,000 Products/Completed Operations Aggregate
         limit, with a

         $1,000,000 each occurrence sub-limit for Products/Completed
         Operations.  Fire Legal Liability sub-limits of $300,000 are required
         for lease agreements.

3.       Southwestern Bell Telephone Company AND Pacific Bell will be named as
         an Additional Insured on the Commercial General Liability policy.

4.       If use of a motor vehicle is required, Automobile Liability insurance
         with minimum limits of $1,000,000 combined single limits per
         occurrence for bodily injury and property damage, which coverage shall
         extend to all owned, hired and non-owed vehicles.

5.       SBC requires that companies affording insurance coverage have a B+ VII
         or better rating, as rated in the A.M.  Best Key rating Guide for
         Property and Casualty Insurance Companies.

A certificate of insurance stating the types of insurance and policy limits
provided the HWM must be received prior to commencement of any work.  The HWM
shall also require all subcontractors who may enter upon the work site to
maintain the same insurance requirements listed above.

LIABILITY

HWM shall indemnify, defend and hold harmless SBC (including its agents,
employees, officers, and directors) from and against any and all liability,
loss, damage, court cost, attorneys' fees or other expense of any kind which
arises out of any claim, demand, suit for damages, injunction or other relief,
on account of (a) injury to or death of any person, (b) damage to any property,
including theft, (c) public charges and penalties, or (d) any lien, caused by,
or resulting from  the acts or omissions of the HWM (including any of its HWMs,
agents, or subcontractors but excepting the negligence or willful misconduct
solely of SBC or its employees) in furnishing the GPS Materials or Services
hereunder.  This





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   37
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 36 of 85







LIABILITY (CONTINUED)

indemnity shall survive the delivery, inspection and acceptance of the GPS
Materials or Services hereunder.  HWM agrees to defend SBC, at no cost or
expense to SBC, against any such liability, claim, demand, suit or legal
proceeding.  SBC agrees to notify HWM within a reasonable time of any written
claims or demands against SBC for which HWM is responsible under this clause.
LICENSES & PATENTS

No licenses, express or implied, under any patents are granted by SBC to HWM
under this Agreement.

M/WBE-DVBE PARTICIPATION PLANS AND REPORTS

HWM commits to goals for the participation of M/WBE and DVBE firms (as defined
in the Section entitled "MBE/WBE/DVBE Cancellation Clause) as follows: 0%
annual MBE participation; 0% annual WBE participation; and 0% annual DVBE
participation.  These goals apply to all annual expenditures by any entity
pursuant to this Agreement with HWM.

Attached hereto and incorporated herein as Exhibit A is HWM's completed Prime
Contractor MBE/WBE/DVBE Commodity Product Subcontracting Plan outlining its
M/WBE-DVBE goals and specific and detailed plans to achieve those goals.  HWM
will submit an updated Participation Plan annually by the first week in
January.  HWM will submit M/WBE-DVBE Results Reports quarterly by the end of
the first week following the close of each quarter, using the form attached
hereto and incorporated herein as Exhibit B, Participation Plans and Results
Reports will be submitted to the Prime Supplier Results Manager.

MBE/WBE/DVBE CANCELLATION

1.       HWM agrees that falsification or misrepresentation of, or failure to
         report a disqualifying change in, the MBE/WBE/DVBE status of HWM or
         any subcontractor utilized by HWM; or HWM's failure to cooperate in
         any investigation conducted by SBC, or by SBC's agent, to determine
         HWM's compliance with this section, will constitute a material breach
         of this





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   38
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 37 of 85






MBE/WBE/DVBE CANCELLATION (CONTINUED)

         Agreement.  In the event of any such breach, SBC may, at its option,
         cancel ("Cancel") this Agreement upon twenty (20) days notice.  HWM
         acknowledges and agrees that SBC's right to Cancel is absolute and
         unconditional, and SBC shall not be subject to liability, nor shall
         HWM have any right to suit for damages as a result of such
         cancellation.

2.       For purchases under this Agreement by Pacific Bell, Pacific Bell
         Directory, Pacific Bell Mobile Services, Pacific Bell Information
         Services, Pacific Bell Communications, and any other entity operating
         principally in California (collectively "California Affiliates"),
         Minority and Women Business Enterprises (MBEs/WBEs) are defined as
         businesses which satisfy the requirements of paragraph 3. below and
         are certified as MBEs/WBEs by the California Public Utilities
         Commission Clearinghouse ("CPUC-certified").  For purchases under this
         Agreement by any entity that is not a California Affiliate, MBEs/WBEs
         are defined as businesses which satisfy the requirements of paragraph
         3. below and are either CPUC-certified or are certified as MBEs/WBEs
         by a certifying agency recognized by SBC.

3.       MBEs/WBEs must be at least 51% owned by a minority individual or group
         or by one or more women (for publicly- held businesses, at least 51%
         of the stock must be owned by one or more of those individuals), and
         the MBEs/WBEs' management and daily business operations must be
         controlled by one or more of those individuals, and these individuals
         must be either U.S. citizens or legal aliens with permanent residence
         status.  For the purpose of this definition, minority group members
         include male or female Asian Americans, Black Americans, Filipino
         Americans, Hispanic Americans, Native Americans (i.e., American
         Indians, Eskimos, Aleuts and Native Hawaiians), Polynesian Americans,
         and multi-ethnic (i.e., any combination of MBEs and WBEs where no one
         specific group has a 51% ownership and control of the business, but
         when aggregated, the ownership and control combination meets or
         exceeds the 51% rule).  "Control" in this context means exercising the
         power to make policy decisions.  "Operate" in this context means
         actively involved in the day-to-day management of the business and not
         merely acting as officers or directors.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   39
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 38 of 85





MBE/WBE/DVBE CANCELLATION (CONTINUED)

4.       For purchases under this Agreement by California Affiliates, Disabled
         Veteran Business Enterprises (DVBEs) are defined as business concerns
         that satisfy the requirements of paragraph 5 below and are certified
         as DVBEs by the California State Office of Small and Minority Business
         (OSMB).  The DVBE must be a resident of the State of California, and
         must satisfy the requirements of paragraph 5 below.  For purchases
         under this Agreement by any entity that is not a California Affiliate,
         DVBEs are defined as any business concern that satisfies the
         requirements of paragraph 5 below and is either a defined DVBE for
         purchases by California Affiliates, or is certified as a DVBE by a
         certifying agency recognized by SBC.

5.       The DVBE must be (1) a sole proprietorship at least 51% owned by one
         or more disabled veterans; or (2) a publicly-owned business in which
         at least 51% of the stock is owned by one or more disabled veterans;
         or (3) a subsidiary which is wholly owned by a parent corporation, but
         only if at least 51% of the voting stock of the parent corporation is
         owned by one or more disabled veterans; or (4) a joint venture in
         which at least 51% of the joint venture's management and control and
         earnings are held by one or more disabled veterans.  In each case, the
         management and control of the daily business operations must be by one
         or more disabled veterans.  A disabled veteran is a veteran of the
         military, naval or air service of the United States with a service-
         connected disability.  "Management and control" in this context means
         exercising the power to make policy decisions and actively involved in
         the day-to-day management of the business and not merely acting as
         officers or directors.

[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE
OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   40
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 39 of 85





MOST FAVORED CUSTOMER (CONTINUED)

HWM shall review and certify its compliance with this clause to SBC annually.
Should such annual review indicate that SBC has not received the treatment to
which SBC is entitled, HWM shall provide SBC with GPS Material and/or Service
credits sufficient to fully compensate SBC for differences.

NO THIRD PARTY BENEFICIARIES

The provisions of this Agreement are for the benefit of the parties and not for
any other person.

NON-EXCLUSIVE MARKET RIGHTS

It is expressly understood and agreed that this Agreement does not grant HWM an
exclusive privilege to provide to SBC any or all GPS Material and Services of
the type described in this Agreement.  It is, therefore, understood that SBC
may contract with other manufactures and suppliers for the procurement or trial
of comparable products and services and that SBC may itself perform the
Services described herein.

NON-INTERVENTION

In connection with the provision of GPS Material and Services by HWM to SBC,
HWM agrees that HWM, either directly or indirectly, shall not intentionally
attempt to influence any regulatory, legislative, or judicial body so as to,
prevent, or delay the offering of products or services by SBC which utilize the
GPS Material or Services supplied by HWM.

NON-WAIVER

No course of dealing or failure of either party to enforce strictly any term,
right or condition of this Agreement will be construed as a waiver of such
term, right or condition.  The waiver by any party hereto of any default of any
other party hereto hereunder will not be deemed a waiver of any other prior or
subsequent defaults of any other party hereto.  The express provision herein
for certain rights and remedies of the parties hereto are in addition to any
other legal and equitable rights and remedies to which  the parties hereto
would otherwise be entitled.

NOTICES

Unless otherwise specifically provided in this Agreement or in any applicable
Order, all notices required or permitted by this Agreement shall be in writing
and may be delivered personally via courier or overnight delivery service, or
may be sent by facsimile or registered mail, return receipt requested, to the
following addresses, unless the parties are subsequently notified of any change
of address in accordance with this Section:





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   41
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 40 of 85





If to HighwayMaster:
         HighwayMaster Corporation
         1155 Kas Drive
         Richardson, Texas 75081
         Attention: General Counsel
         Facsimile: (972) 301-2263

If to SBC:
         SBC
         1010 Pine, 9-E-80
         St. Louis, Missouri 63101
         Attention:  Chris Vilcinskas
         Facsimile: (314) 235-8601

If to Affiliate:
         (Affiliate Name)
         (Affiliate Street Address)
         (Affiliate City State Zip)
         (Attention: Affiliate Contact Person)
         Facsimile: (Affiliate Fax Number)

Any notice shall be deemed to have been received as follows: (1) by personal
delivery upon receipt; (2) by facsimile upon receipt; (3) by certified mail,
five (5) business days after delivery to the U.S. postal authorities by the
party serving notice. If notice is sent by facsimile, a confirming copy of the
same shall be sent by mail to the same address.

The address to which notices or communications may be given by either party may
be changed by written notice given by such party to the other pursuant to this
paragraph entitled "Notices". 

[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE
OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]

ORDER ACCEPTANCE

HWM agrees to acknowledge in writing to SBC receipt of each Order within ten
(10) days of such receipt.  HWM will have the right to reject any Order for (a)
failure of SBC to provide all ordering information required by this Agreement
or (b) failure of SBC to allow HWM reasonable time to supply the items
requested.  HWM will also have the right to reject an Order which includes
additional unagreed to special terms and conditions.  HWM will indicate in its
written acknowledgment to SBC whether the Order was accepted or rejected and,
if rejected, the reasons therefor.  Acceptance of any Order by HWM will bind
both





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   42
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 41 of 85





parties to honor dates, amounts and other ordering information shown thereon,
including supplemental provisions contained therein.

ORDER OF PRECEDENCE

In the event of a conflict or inconsistency between this Agreement and any
Order, the Order shall control.  Except for such Order, the terms of this
Agreement shall not be deemed waived, amended or modified.

PERSONNEL EMPLOYMENT

For the term of this Agreement and for twelve (12) months after termination,
each party agrees that it shall not directly or indirectly, solicit, divert or
hire away, or attempt to solicit, divert or hire away, any agent, or employee
of the other party without prior written consent of the other party.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   43
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 42 of 85





PLANT AND WORK RULES

Each party's employees and agents will, while on the premises of the other or
at any other location while performing Services under this agreement for SBC,
comply with all SBC rules and policies, including its "Code of Business
Conduct", a copy of which is available upon request, which prohibits the
possession of any weapon or implement which might be used as a weapon on SBC
properties.  Either party will have the right to have the other party removed
and replace personnel which in its opinion is not conforming to its rules or
policies.  In addition, the parties agree that, where required by government
regulations, it will submit satisfactory clearance from the U. S. Department of
Defense and/or other federal authorities concerned.

POINTS OF CONTACT

For the purpose of this Agreement the contacts shall be as follows:

         HighwayMaster        [Text has been omitted pursuant to a request for
confidential treatment. The omitted material has been filed separately with the
SEC.]

         Pacific Bell/Nevada Bell       [Text has been omitted pursuant to a 
request for confidential treatment. The omitted material has been filed
separately with the SEC.]

         SWBT       [Text has been omitted pursuant to a request for 
confidential treatment. The omitted material has been filed separately with the
SEC.]

         SNET       [TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR 
CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE
SEC.]


PRICES AND PAYMENT

HWM shall submit invoices for installation charges and for GPS Materials upon
delivery and installation of such GPS Materials to SBC.  SBC shall pay such
invoices no later than acceptance, or thirty (30) days from receipt of invoice
whichever occurs later.  [Text has been omitted pursuant to a request for
confidential treatment. The omitted material has been filed separately with the
SEC.]

HWM shall submit monthly invoices for Network Services prorated during the
first month based on the number of days left in the monthly billing cycle
following





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   44
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 43 of 85





activation.  Subsequent monthly invoices will be provided for each month
following activation.


PRICES AND PAYMENT (CONTINUED)[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE
SEC.]

The prices shall be as outlined in Appendix II, attached hereto and by this
reference made a part hereof.  Specific prices identified as still to be
determined

(TBD) will be identified in a modification to this Agreement as mutually agreed
by the parties.  Should a difference occur in the amount invoiced by HWM and
paid by SBC a credit or a debit will be applied to an SBC future invoice.
[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   45
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 44 of 85





PUBLICITY

HWM shall not use SBC's name or any language, pictures or symbols which could,
in SBC's judgment, imply SBC's identity or endorsement by SBC or any of its
employees in any (a) written, electronic or oral advertising or presentation or
(b) brochure, newsletter, book, electronic database or other written material
of whatever nature, without SBC's prior written consent (hereafter the terms in
this clause (a) and (b) shall be collectively referred to as "publicity
matters").  HWM will submit to SBC for written approval, prior to publication,
all publicity matters that mention or display SBC's name and/or marks or
contain language from which a connection to said name and/or marks may be
inferred or implied.

PURCHASE AUTHORIZATION

SBC agrees to place the orders under this Agreement for at least eleven
thousand five hundred (11,500) GPS units at the prices specified in Appendix
II, no later than December 29, 1998.  SBC shall have a right to terminate
orders, in which case SBC's liability shall be comprised of and limited to the
following termination charges:

HWM's actual costs of (1) materials, components, and equipment identified to
this Agreement and  then in HWM's inventory and engineering work identified to
this Agreement (to the extent that such HWM's purchase orders for such
materials, components , equipment and engineering work are not terminable and
such materials, components , equipment and engineering work are not usable in
HWM's other operations within two (2) months following such date of termination
or expiration), less any salvage value thereof; (2) HWM's actual costs incurred
in procuring such goods and services at the date of expiration or receipt of
notice of termination, less any salvage value thereof; and (3) reasonable
termination charges actually paid by HWM to its suppliers.  In no way shall
SBC's total liability for termination of orders exceed twelve million dollars
($12,000,000) if written notice of termination is delivered by September 30,
1998, and twenty million dollars ($20,000,000) if written notice of termination
is delivered after September 30, 1998.

Upon receipt by HWM of notice of termination, title to all materials,
components, or equipment for which SBC is obligated to pay termination charges
under (1), above, shall vest in SBC.  HWM shall follow SBC's instructions for
disposition of these items and work.  In addition, when payment is made, HWM
shall provide SBC a copy of Software which is developed for SBC.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   46
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 45 of 85





PURCHASE PROVISIONS

1.       SCOPE
         a.      Subject to the terms and conditions of this Agreement, HWM
                 shall provide to SBC such Products and Services as are ordered
                 by SBC hereunder.  As used herein, Services shall include
                 engineering and installation of Products ordered hereunder and
                 all other Services provided in connection with the applicable
                 Products.

2.       Each such Order shall be numbered and shall include at least the
         following items whenever such item is applicable to the Products and
         Services covered by such Order:
         a.      The date of the Order;
         b.      The incorporation of this Agreement by reference;
         c.      A complete list of the products and Services covered by the
                 Order, specifying, attaching or referencing the quantity,
                 model number, program name or identification number,  and
                 description for each;
         d.      The price of each Product and Service, including discounts (if
                 any), and any additional charges and costs;
         e.      Shipping instructions;
         f.      The destination to which the Products will be delivered and
                 the date and time for scheduled delivery;
         g.      The scheduled Installation Date;
         h.      The scheduled performance dates for the Services; and
         i.      Any special terms and conditions.

Orders shall be shipped complete unless SBC authorizes otherwise, in advance,
by writing.

QUALITY ASSURANCE

SBC expects and requires HWM to have a high quality process operating within
HWM's facilities to which GPS Material purchased hereunder will be subject. SBC
considers ANSI/ASQC Q9001 or ANSI/ASQC Q9002 registration to be of great value
to both the HWM and the SBC, and the HWM is encouraged, but not required, to
seek ANSI/ASQC Q9001 or ANSI/ASQC Q9002 registration if they are not currently
registered.  In addition, HWM's Quality Program Specifications are attached
hereto as Appendix VII and by this reference made a part hereof.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   47
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 46 of 85






QUALITY ASSURANCE (CONTINUED)

HWM hereby agrees that GPS Material furnished hereunder by HWM will be subject
to:

         HWM's quality control activities and procedures, as accepted and
         approved by SBC, including but not limited to any performance
         measurements, testing, quality process reviews or inspections to
         implement such procedures.

When requested by SBC, HWM will at no additional charge:

1.       Notify SBC or SBC's Agent when GPS Material is ready for examination
         and give SBC or SBC's Agent reasonable opportunity to examine same at
         any time prior to the scheduled shipment date thereof.

2.       Provide SBC or SBC's Agent with copies of HWM's Quality Manual,
         current inspection procedures and product specifications for the GPS
         Material furnished hereunder.

3.       Maintain and make available to SBC or SBC's Agent the data, including
         all information and reports about HWM's quality control procedure,
         which demonstrate that the GPS Material meets the specified quality
         and reliability requirements.

4.       Provide SBC or SBC's Agent, at no charge, with access to HWM's test
         equipment, facilities, data and specifications, assistance from HWM's
         personnel and sufficient working space to enable SBC or SBC's Agent to
         perform said quality assurance examination and/or process surveillance
         and/or a review of HWM's total quality program at HWM's facilities.

5.       HWM hereby agrees that SBC or its representative may perform a quality
         assurance examination/inspection of GPS Material purchased hereunder
         at HWM's facility at any time prior to the scheduled shipment date,
         and will provide SBC or its representative accessibility to its
         facility to do so.  Nothing contained herein will affect SBC's rights
         hereunder, under any warranty, or under any other provisions of this
         Agreement.  The purchase of any GPS Material under this Agreement is
         subject to SBC's inspection and acceptance after delivery.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   48
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 47 of 85






RECORDS AND AUDIT

For the purposes of this Agreement, HWM shall maintain complete and accurate
records of all amounts billable to and payments made by SBC hereunder in
accordance with standard recognized accounting practices.  HWM shall retain
such records for a period of three (3) years from the date of final payment for
GPS Material covered by this authorization and maintain reasonable billing
detail for the time specified.  HWM agrees to provide reasonable supporting
documentation concerning any disputed amount of invoice to SBC within thirty
(30) calendar days after receipt of written notification of such dispute.  HWM
further agrees SBC shall have the right through its accredited representatives
to inspect and audit, during normal business hours, the time and material
charges involved to SBC under this authorization.  This right to audit shall be
limited to validating the accuracy of its resources utilized and associated
charges to SBC and expressly excludes records and information pertaining to any
other customers, or HWM's accounting policies or practices.  Should SBC request
an audit, HWM will make available the pertinent utilization records and files.
All costs directly attributable to such audit shall be paid by SBC.

REGISTRATION

When GPS Material furnished under this Agreement is subject to Part 68 of the
Federal Communications Commission's Rules and Regulations ("FCC Rules and
Regulations") as may from time to time be amended, HWM warrants that such GPS
Material is registered under and complies with Part 68 of such FCC Rules and
Regulations including, but not limited to, all labeling and customer
instruction requirements.  HWM agrees to indemnify and hold SBC harmless from
and against any liability, claims or demands (including costs of defense and
attorneys' fees) that may be made because of HWM's noncompliance with Part 68
of the FCC Rules and Regulations.  HWM agrees, at its expense, to defend SBC,
at SBC's request, against such liability, claim or demand, provided , however,
that HWM shall (1) keep SBC fully informed as to the progress of such defense,
and  (2) afford SBC, at its own expense, an opportunity to participate on an
equal basis with HWM in such defense.

RELEASES VOID

Neither party shall require waivers or releases of any personal rights from
representatives of the other in connection with visits to its premises, and no
such releases or waivers shall be pleaded by either party in any action or
proceeding.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   49
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 48 of 85





RELOCATION

Upon thirty (30) days' prior written notice from SBC, HWM agrees to prepare for
relocation and reinstall GPS Material purchased hereunder at any other site at
SBC's expense.  The charge will be as specified in Appendix II, Pricing.

REMEDIES CUMULATIVE

Any rights of cancellation, termination, liquidated damages or other remedies
prescribed in this Agreement are cumulative and are not exclusive of any other
remedies to which the injured party may be entitled, including but not limited
to, the remedies of specific performance and cover; however, neither party
shall retain the benefit of inconsistent remedies.

RESPONSIBILITIES

The basic responsibilities of each party are outlined below.

SBC RESPONSIBILITIES
         SBC will:
             o   Make available upon Agreement execution ten (10) different
                 types of SBC vehicles to HWM for installation analysis
             o   Prioritize sites and schedule for installation
             o   Coordinate schedule for site installation & site coordinators
             o   Provide contact names and telephone numbers and fully inform
                 these contacts before being contacted by HWM
             o   Coordinate to assure that vehicles are available at a ninety
                 five percent (95%) rate at the designated times and locations
             o   Assign a program manager for this implementation

         HWM RESPONSIBILITIES
         HWM will:
             o   Look at ten (10) different types of SBC vehicles to prepare
                 for installation
             o   Provide Installation drawings completed for HWM to start
                 installations
             o   Coordinate schedule for site installation & site coordinators
             o   Train SBC personnel within three (3) days following
                 Installation Acceptance pending agreement of a training plan





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   50
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 49 of 85





RESPONSIBILITIES (CONTINUED)

             o   Coordinate to assure that vehicles available at a ninety five
                 percent (95%) rate are installed at the designated times and
                 locations
             o   Assign a program manager for this implementation
             o   Use its best efforts to complete delivery of Phase 1, 2, and 3
                 requirements by the Delivery Dates specified herein.

RISK OF LOSS

SBC will be relieved from all risk of physical loss, damage or destruction to
the GPS Material during the period the GPS Material is in transit or in the
possession of HWM up to and including the date Acceptance Date thereof, except
for any loss or damage caused solely by the negligence or willful misconduct of
SBC.  After the Acceptance Date, SBC will assume all risk of loss, damage or
destruction to the GPS Material, except for any loss or damage caused by the
negligence or willful misconduct of HWM, its agents of employees.

SBC AND HWM INFORMATION

Any specifications, drawings, sketches, models, samples, tools, computer or
other apparatus programs, component lists, HWM lists, pricing lists,
documentation, technical information or business information or data, written,
oral or otherwise (all hereinafter designated "Information"), furnished to one
party by the other under this Agreement or in contemplation hereof will remain
the disclosing party's property.  All copies of such Information in written,
graphic or other tangible form will be returned to the disclosing party upon
request.  Information will be kept confidential by the parties (including the
agents, employees, and affiliates of each) in performing under this Agreement
and may not be used for any other purposes except upon such terms as may be
agreed upon between HWM and SBC in writing.

SEVERABILITY

If any provision or any part of provision of this Agreement shall be invalid or
unenforceable, such invalidity or non- enforceability shall not invalidate or
render unenforceable any other portion of this Agreement.  The entire Agreement
will be





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   51
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 50 of 85





SEVERABILITY (CONTINUED)

construed as if it did not contain the particular invalid or unenforceable
provision(s) and the rights and obligations of the HWM and SBC will be
construed and enforced accordingly.

SHIPPING AND BILLING

HWM will at its expense:

         1.    Ship Orders complete unless instructed otherwise by SBC.

         2.    Ship to the destination designated in an Order in accordance
               with specific routing instructions.

         3.    Enclose a packing memorandum with each shipment and, when more
               than one (1) package is shipped, identify the one containing the
               memorandum.

         4.    Mark the Order number and Product identification on all
               packages, subordinate documents and shipping papers.

         5.    Render invoices showing the Order number, through routing and 
               weight.

         6.    Render separate invoices for each shipment or Order.

On written request of SBC, HWM will mail Bills of Lading, shipping notices and
copies of transportation bills with copies of HWM's invoices to the address
indicated on said request.

HWM will limit billing on repair invoices to one (1) invoice per repair Order.

SBC shall reimburse HWM for any transportation charges incurred in delivery of
the GPS Materials to SBC.  HWM will include the transportation charges from the
F.O.B. point to the destination as a separate charge on HWM's invoice for the
GPS Materials.  Adequate protective packaging will be furnished by HWM at no
additional charge.  Shipping and routing instructions may be altered as
mutually





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   52
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 51 of 85







SHIPPING AND BILLING (CONTINUED)

agreed upon by HWM and SBC without written notice.  C.O.D. shipments will not
be accepted.  All claims for monies due or to become due from SBC will be
subject to deductions by SBC for any setoff or counterclaim for monies due or
to become due from HWM, whether under this Agreement or otherwise.

SITE PREPARATION

HWM agrees to furnish to SBC, in writing, GPS Specifications, Installation Site
requirements and HWM's recommendations for Site preparation at least ninety
(90) calendar days prior to the Delivery Date specified in the applicable
Order.  The GPS Specifications will contain sufficient detail to ensure that
the GPS Material to be installed will operate efficiently in accordance
therewith.  Any changes in GPS Specifications or Installation Site requirements
will be sent to SBC, in writing, at least ninety (90) calendar days prior to
the delivery of any additional units of GPS Material which may be ordered after
the initial Order.  SBC will have the Installation Site prepared at no expense
to HWM in accordance with the GPS Specifications furnished by HWM.
Installation Site preparation will be scheduled to be completed at least ten
(10) calendar days prior to the Delivery Date specified in the applicable
Order, subject to the delay provisions of the clause entitled Delivery.

HWM may inspect the Site on the scheduled date for completion of preparation or
immediately after SBC informs HWM that Installation Site preparation is
complete.  HWM will promptly report to SBC in writing, the date of the
inspection and any nonconforming conditions.

Any alterations or modifications in Installation Site preparation which are
attributable to incomplete or erroneous GPS Material Specifications,
Installation Site requirements or Installation Site recommendations provided by
HWM will be made by SBC at HWM's expense.

SURVIVAL OF OBLIGATIONS

The obligations of either party to  this Agreement which by their nature would
continue beyond the termination, cancellation or expiration hereof, including,
by way of illustration only and not limitation, those in the clauses ENTITLED





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   53
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 52 of 85





SURVIVAL OF OBLIGATIONS (CONTINUED)

COMPLIANCE WITH LAWS, INSURANCE, LIABILITY, PUBLICITY, RELEASES VOID,
SEVERABILITY, SBC AND HWM INFORMATION AND WARRANTY, will survive the
termination, cancellation or expiration of this Agreement.

TAXES 

HWM will invoice SBC the amount of any federal excise taxes or state or local
sales taxes, if any, imposed upon the sale of GPS Material as separate items,
listing the taxing jurisdiction imposing the tax.  Software and all Services
will be separately stated on the applicable invoice.  SBC agrees to pay such
amounts to HWM.  With respect to services, SBC will pay all applicable taxes
and equivalent government assessments in addition to the pricing set forth in
this Agreement.  SBC shall pay, in addition to the charges due hereunder for
the Products and/or Services, all applicable federal, state, local sales, use,
and /or excise taxes or surcharges.  HWM will invoice SBC the amount of any
federal excise taxes or state or local sales taxes imposed upon the sale of GPS
Material as separate items, listing the taxing jurisdiction imposing the tax.
SBC agrees to pay such amounts to HWM.

HWM agrees to pay, and to hold SBC harmless from and against, any penalty,
interest, additional tax or other charge that may be levied or assessed as a
result of the delay or failure of HWM, for any reason, to pay any tax or file
any return or information required by law, rule or regulation or by this
Agreement to be paid or filed by HWM.  HWM agrees to pay and to hold SBC
harmless from and against any penalty or sanction assessed as a result of HWM
doing business with any country subject to U.S. trade restrictions.

SPECIAL TAX PROVISIONS

The following tax sections shall apply only to sales of products which occur in
the state of California and/or other states where the statutory taxation scheme
imposes the legal obligation to pay state, local and/or municipal sales taxes
upon the seller of products, rather than the buyer of products, and which
allows the seller to contractually shift the legal obligation to pay said
state, local and/or municipal sales taxes to the buyer.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   54
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 53 of 85





TAXES (CONTINUED)

         a.      Upon SBC's request, the parties shall consult with respect to
                 the basis and rates upon which HWM shall pay any taxes for
                 which SBC is obligated to reimburse HWM under this Agreement.
                 If SBC determines that in its opinion any such taxes are not
                 payable or should be paid on a basis less than the full price
                 or at rates less than the full tax rate, HWM shall make
                 payment in accordance with such determinations.  If collection
                 is sought by the taxing authority for a greater amount of
                 taxes than that so determined by SBC, HWM shall promptly
                 notify SBC.  If SBC desires to contest such collection, SBC
                 shall promptly notify HWM.  If SBC determines that in its
                 opinion it has reimbursed HWM for sales or use taxes in excess
                 of the amount which SBC is obligated to reimburse HWM, SBC and
                 HWM shall consult to determine the appropriate method of
                 recovery of such excess reimbursements.  HWM shall credit any
                 excess reimbursements against tax reimbursements or other
                 payments due from SBC if and to the extent HWM can make
                 corresponding adjustments to its payments to the relevant tax
                 authority.  At SBC's request, HWM shall timely file any claims
                 for refund and any other documents required to recover any
                 other excess reimbursements, and shall promptly remit to SBC
                 all such refunds (and interest) received.

         b.      Although HWM shall cooperate with and provide reasonable
                 assistance to SBC, SBC shall direct the conduct of any
                 proceedings, hearings or litigation involved in any contest
                 with respect to taxes for which SBC is obligated to reimburse
                 HWM under this Agreement.  SBC shall reimburse HWM for any
                 taxes, interest, penalties or out of pocket expenses
                 reasonably incurred with SBC's advance written approval, such
                 as travel expenses of witnesses appearing in such proceedings,
                 which HWM may be required to pay because of HWM's complying
                 with SBC's determinations with respect to the payment of
                 contesting of any such taxes.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   55
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 54 of 85





TAXES (CONTINUED)

         c.      If any taxing authority advises HWM that it intends to audit
                 HWM with respect to any taxes for which SBC is obligated to
                 reimburse HWM under this agreement, HWM shall (1) promptly so
                 notify SBC, (2) afford SBC an opportunity to participate on an
                 equal basis with HWM in such audit with respect to such taxes
                 and (3) keep SBC fully informed as to the progress of such
                 audit.  Each party shall bear its own expenses with respect to
                 any such audit, and the responsibility for any additional tax,
                 penalty or interest resulting from such audit shall be
                 determined in accordance with the applicable provisions of
                 this Section.  HWM's failure to comply with the notification
                 requirements of this section shall relieve SBC of its
                 responsibility to reimburse HWM for taxes only if HWM's
                 failure materially prejudiced SBC's ability to contest
                 imposition or assessment of those taxes.

TECHNICAL REQUIREMENTS AND SPECIFICATIONS

Product Technical Requirements and Specifications:

         The GPS Material and Services shall comply with the GPS Specifications
         as described in all Appendices or Exhibits, attached hereto and
         incorporated into this Agreement by reference and such other
         requirements and specifications as may be mutually agreed to by the
         parties.

TERMINATION AND CANCELLATION

If either party is in material breach of an obligation hereunder, the party in
breach shall have the period(s) defined below from the date of written notice
thereof to cure such breach:

1.       Prior to completing delivery and installation of Phase 1 requirements,
         thirty (30) days from the date of written notice specifying the breach
         in sufficient detail, followed  by an additional thirty (30) days
         after written notice of intent to cancel.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   56
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 55 of 85





TERMINATION AND CANCELLATION (CONTINUED)

2.       After completing delivery and installation of Phase 1 requirements,
         thirty (30) days from  the date of written notice specifying the
         breach in sufficient detail, followed by an additional forty five (45)
         day after written notice of intent to cancel.

If the breach is not cured within such applicable cure period, the party not in
breach may cancel this Agreement.

TIME IS OF THE ESSENCE

HWM understands that SBC's business and operations require the delivery of GPS
Material and the performance of Services hereunder be accomplished in the
period of time and by dates specified in the applicable Order.  Therefore, it
is agreed that TIME IS OF THE ESSENCE in the delivery of GPS Material and the
performance of Services.  In determining a period of time, the date upon which
action is taken to start the period shall not be counted and the period shall
end with the close of business on the last designated day of the period.

TIMELY PERFORMANCE

If HWM learns of anything that might prevent the timely delivery of the
Products and/or performance of the Services, HWM will immediately notify SBC of
all relevant information concerning the potential delay.

TITLE

Title to GPS Material purchased pursuant to this Agreement will remain in HWM
until the Acceptance Date thereof, at which time title will pass to SBC.  Upon
receipt of payment, HWM will furnish SBC a Bill of Sale and all other documents
requested by SBC to enable it to perfect unencumbered title to the GPS
Material.

TRADE-INS

SBC may at any time request HWM to substitute any upgraded or later-developed
GPS Material for GPS Material purchased pursuant to this Agreement.  In such
event, HWM may allow a trade-in credit for the old GPS Material toward the
purchase price of the new GPS Material equal to its depreciated value using
straight-line depreciation and a seven (7)-year life.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   57
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 56 of 85






TRAINING

HWM will provide SBC, training materials and technical support to enable SBC to
properly and effectively use the GPS Material ordered hereunder.

Training will be provided for a mutually agreed to number of SBC personnel per
course.  Initial training will normally be provided prior to or concurrent with
the Installation Date of the GPS Material at each applicable Installation Site;
provided, however, that Acceptance Testing of the GPS Material will not
commence until such training has been provided.  Such training will be
conducted at the Installation Site or at other sites selected by SBC, and on
dates which are mutually agreeable to HWM and SBC.

At SBC's request, HWM will provide additional training classes from time to
time at a site selected by SBC or at HWM's site.  SBC may also acquire kits of
training materials and may conduct its own courses.  SBC will pay for such
additional training classes, or for such kits of training materials, at HWM's
then current standard published charge for such services, less any applicable
discounts.  In the event of additional training at SBC's site, reasonable
expenses for travel and lodging for the trainer will be paid by SBC, provided
that reasonable supporting documentation is submitted by HWM therefor.

SBC may reproduce any training material originated by HWM for the purpose of
training SBC's own personnel.  Any such reproductions will include any
copyright or similar proprietary notice contained in the items being
reproduced.

TRANSPORTATION

All transportation charges applicable to GPS Material both from and to HWM's
plant are to be paid by SBC; provided, however, that HWM will bear the cost of
transportation for GPS Material (a) shipped for mechanical replacement purposes
covered under any applicable Warranty, (b) removed as a result of GPS Material
failure while covered under any applicable Warranty, whether for the
convenience of HWM or pursuant to a demand by SBC as provided herein, and (c)
removed as a result of a default by HWM of any of the terms and conditions of
this Agreement or any Order.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   58
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 57 of 85





TRANSPORTATION (CONTINUED)

HWM will prepay transportation and handling charges for all GPS Material
ordered hereunder and list same as separate items on HWM's invoice therefor.
Transportation charges to ship empty packing cases will be paid by HWM except
when the GPS Material is moved at SBC's request from one SBC Installation Site
to another.

Transportation charges payable by SBC will not exceed the cost of shipment
between SBC's location and the location of HWM's nearest plant of manufacture
of the GPS Material being shipped, regardless of the actual point of origin or
destination of the GPS Material.

SBC will pay only those rigging or drayage costs incurred at SBC's Installation
Site, except when HWM is responsible for payment of transportation charges as
stated above.

UNIVERSAL  DESIGN

HWM advocates and supports and encourages its suppliers to advocate and support
the manufacturing and provision of products which embrace the concept of
"universal design".  HWM shall use its reasonable efforts to manufacture and
provide products, including future versions of Products, to make it's products
accessible to the widest range of consumers including those with disabilities.
HWM agrees to reasonably cooperate with SBC in addressing disability access
issues, including hearing aid interference, that may arise in connection with
SBC's customer's use of HWM's Products furnished hereunder.  Specifically HWM
agrees:

1.       to ensure that its equipment is designed, developed and fabricated to
         be accessible to and usable by people with disabilities, and

2.       to ensure that the service is accessible to and usable to people with
         disabilities, or

3.       to ensure that the equipment or service is compatible with existing
         peripheral devices or specialized customer premises equipment commonly
         used by individuals with disabilities to achieve access, if the
         requirements of subsection 1 and 2 are not readily achievable.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   59
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 58 of 85






WARRANTY

HWM's warranties are based upon the product descriptions of GPS Material
contained in the GPS Specifications agreed upon by SBC and HWM (including any
specifications and demonstrations and drawings) and the demonstrations and
samples previously provided and demonstrated, as well as any other
specifications, drawings, demonstrations and samples that may be referred to or
incorporated in this Agreement or the final agreement between the parties.[Text
has been omitted pursuant to a request for confidential treatment. The omitted
material has been filed separately with the SEC.] 

HWM warrants to SBC that GPS Material furnished hereunder will be merchantable,
free from defects in design, GPS Material and workmanship, fit and sufficient
for the purposes intended by SBC, free from all liens and encumbrances and will
conform to and perform in accordance with applicable GPS Specifications,
drawings, demonstrations and samples.  In addition, if GPS Material contains one
or more manufacturer's warranties, which are permitted to be assigned by their
terms, HWM hereby assigns such warranties to SBC.  These warranties will be in
addition to all other warranties, express, implied or statutory.  All warranties
will survive inspection, acceptance, payment and use.[Text has been omitted
pursuant to a request for confidential treatment. The omitted material has been
filed separately with the SEC.] 

HWM also warrants to SBC that any services provided hereunder will be performed
in a first-class, workmanlike manner, with the care, skill and diligence, and in
accordance with the applicable standards currently recognized in HWMs profession
or industry.  If HWM fails to meet applicable professional standards, HWM will,
without additional compensation, correct or revise any errors or deficiencies in
the Services furnished hereunder.[Text has been omitted pursuant to a request
for confidential treatment. The omitted material has been filed separately with
the SEC.] 

GPS Material not meeting the warranties contained herein during the warranty
stated at the bottom of this warranty section, will, at SBC's option, be
repaired, adjusted or replaced by HWM at no cost to SBC.  After the [Text has
been omitted pursuant to a request for confidential treatment. The omitted
material has been filed separately with the SEC.] Warranty for Service a time
and material charge will be applied based on HWM service rates identified in the
Agreement.  In the event of an emergency out-of-service condition caused by GPS
Material furnished hereunder, HWM agrees to ship replacement GPS Material, if
available, within [Text has been omitted pursuant to a request for confidential
treatment.  The omitted material has been filed separately with the SEC.] of
notification by SBC.  Such emergency replacement Service shall continue for a
period of [Text has been omitted pursuant to a request for confidential
treatment. The omitted material has been filed separately with the SEC.] after
the expiration of this





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   60
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 59 of 85





Agreement.  For GPS Materials not covered under warranty, charges for
replacement GPS Material shall be at the current selling price; freight charges
shall be borne by SBC.


WARRANTY (CONTINUED)[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR
CONFIDENTIAL TREATMENT. THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE
SEC.]

In addition to the warranties stated above HWM warrants the [Text has been
omitted pursuant to a request for confidential treatment. The omitted material
has been filed separately with the SEC.] for a period of [Text has been omitted
pursuant to a request for confidential treatment. The omitted material has been
filed separately with the SEC.] for labor and [Text has been omitted pursuant
to a request for confidential treatment. The omitted material has been filed
separately with the SEC.] for all parts.

Warranties specified herein shall commence from the date of SBC's acceptance of
the applicable GPS Material or Service.  [Text has been omitted pursuant to a
request for confidential treatment. The omitted material has been filed
separately with the SEC.] warranties shall commence on acceptance of Phase 1
GPS Material and the period shall not be extended as it relates to the [Text
has been omitted pursuant to a request for confidential treatment. The omitted
material has been filed separately with the SEC.] by virtue of subsequent
Software modifications.


WORK DONE BY OTHERS

If any part of the work is dependent upon work done by others, HWM shall
inspect and promptly report to SBC any defect that renders such other work
unsuitable for HWM's proper performance.  HWM's silence shall constitute
approval of such other work as it is fit, proper and suitable for HWM's
performance of the work.  HWM shall be entirely responsible for all persons
furnished by HWM working in harmony with all others when working on SBC's
premises.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   61
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 60 of 85





WORK HEREUNDER

It is understood that visits by representatives of HWM or its suppliers for
inspection, adjustment or other similar purposes in connection with GPS
Material purchased hereunder will for all purposes be deemed "work hereunder"
and will be at no charge to SBC unless otherwise agreed in writing with SBC.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   62
                                                            Agreement No. 980427
                                                                       SECTION A
                                                                   Page 61 of 85




                         SECTION B - SOFTWARE LICENSE 

GENERAL

HWM agrees to supply to SBC, under the terms and conditions set forth in this
Agreement, all Software and associated Documentation specified in an Order
submitted to HWM pursuant hereto.

GRANT OF LICENSE

HWM hereby grants to SBC a perpetual, non-exclusive, irrevocable, royalty-free
Enterprise License/Site License/CPU License (the "License") to use the Software
Products specified in Orders for any business purpose of SBC or its Affiliated
Companies. No right of sublicense is granted to SBC.

SBC may also alter tables and other user modifiable parameters as provided in
the GPS Specifications applicable to the Software Products.  SBC shall also
have the right to create copies of machine readable Software Products and any
source code provided or acquired hereunder for backup and recovery purposes.

All materials developed or produced by SBC through use of the Software Products
shall remain the property of SBC and/or Affiliated Companies.  SBC shall not
use, print, copy, modify, translate, alter, decompile, reverse engineer or
display the Software Products, in whole or in part, except as expressly
provided for in this Agreement.

DOCUMENTATION UPDATES

HWM agrees to provide updates to Documentation furnished to SBC hereunder which
is related to the use and support of the Software.  HWM will also provide
periodic newsletters concerning the programs, Software enhancements,
programming notes, and Documentation corrections to the SBC liaison support
associated with such Software.

In the event of an emergency out-of-service condition caused by defective
Software or a disaster or other occurrence wherein SBC's copy of such Software
is destroyed or rendered unusable, HWM agrees to ship a replacement copy of the
current version of such Software as installed at SBC's Installation Site(s)
within two (2) workdays of verbal notification by SBC.  HWM also agrees that
there will be no charge to SBC for such replacement copy of the Software, other
than the cost of the media upon which the Software resides.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   63
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 62 of 92



ERROR CORRECTIONS

HWM will supply code corrections to correct errors or malfunctions in the
Software which cause such Software to either be unavailable for use by SBC or
fail to meet the applicable GPS Specifications therefor.  Errors may be
reported to HWM by SBC either verbally or by written notice to HWM's Customer
Care Center located in Richardson, Texas at 1(800) 647- 6693.  HWM will notify
SBC in writing of the existence of any significant error relating to SBC's
processing environment or use of the Software within forty-eight (48) hours
after the error is brought to its attention.

The error correction procedures will be designed to correct errors in the
Software in accordance with the following levels of error severity assigned by
SBC based on the following conditions:

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

*NOTE    Resolution of intermittent error conditions will be handled on a
         case-by-case basis.

HWM will correct any and all errors in Software in accordance with error
severity levels as described in this Clause, regardless of the source of
notification.  If HWM determines that such errors cannot be corrected within
the specified intervals, HWM will immediately initiate an escalation procedure
to:

         a.   Immediately assign sufficiently skilled personnel to correct the
              error.

         b.   Immediately notify HWM's senior management personnel that such
              error has not been corrected and that the escalation procedure
              has been activated.

         c.   Provide weekly written status reports of outstanding uncorrected
              error to SBC.

If any Software error cannot be corrected by HWM in accordance with this
clause, HWM agrees to grant to SBC, on the next maintenance invoice, a
malfunction credit calculated separately for each error severity level as
follows:





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   64
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 63 of 92




ERROR CORRECTIONS (CONTINUED)

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

FORM OF ORDER

An Order for Software will be written on SBC's Order form and will contain the
following information, if applicable:

         1.      The incorporation by reference of this Agreement.
         2.      The Installation Site(s).
         3.      The type of License (perpetual/annual).
         4.      The charge for the License being granted.
         5.      The date by which the Software will be delivered.
         6.      Data processing equipment model number and, if already
                 installed, its serial number.
         7.      Any special terms and conditions agreed upon by the parties.

INSTALLATION OF SOFTWARE

If requested by SBC in the applicable Order, HWM agrees to install the
Software, at the Installation Site designated therein, at no charge to SBC.
Installation of the Software by SBC or HWM will consist of a version that will
perform in accordance with the corresponding published performance GPS
Specifications therefor and will include a demonstration of the Software's
features and functions using HWM's standard demonstration procedure of the
installed Software on SBC's computer system.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   65
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 64 of 92




INSTALLATION OF SOFTWARE (CONTINUED)

The purpose of the installation demonstration will be to confirm that all
Software ordered has been entered into SBC's program library and that such
Software functions in accordance with HWM's published performance GPS
Specifications associated therewith.  The demonstration will be considered to
be successfully completed when the Software output results match the standard
set of results provided by HWM.

If HWM installs the Software, HWM will certify in writing to SBC, at the
successful completion of the installation demonstration, that the Software has
been properly installed and performs in accordance with HWM's published
performance GPS Specifications applicable thereto.  If SBC installs same, HWM
agrees to provide complete installation instructions with the Software and
telephone consultation, during HWM's business hours, on the proper installation
thereof at no additional charge to SBC.

SOFTWARE PRODUCT DELIVERY AND INSTALLATION

For each Software Product, HWM shall deliver, at no additional charge, at least
the following basic materials:

         1.    Executable Software.
         2.    System implementation instructions and required procedures.
         3.    User instructions.
         4.    Sample data.
         5.    Any other programs, routines, subroutines or related material
               HWM has or may develop necessary for the general use of the
               Software Products which are normally furnished to users of the
               Software Products at no charge.
         6.    Documentation and GPS Specifications associated with the
               Software Products.
         7.    Complete installation instructions.

No Software Products under any Order shall be deemed to be delivered until all
Software Products required by that Order have been delivered, unless otherwise
agreed between the parties.  HWM also agrees to provide, at no additional
charge, telephone consultation as necessary during HWM's normal business hours,
on the proper installation of the Software Products.  In addition, upon





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   66
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 65 of 92




PRODUCT DELIVERY AND INSTALLATION (CONTINUED)

request by SBC, HWM agrees to install the Software Products at SBC's
location(s) for no additional charge.

SBC may exchange Software Products, at no charge, for an alternative, generally
available version of the Software Products for use on different platforms or
operating systems.  In order to exchange, SBC must certify to HWM in writing
that all existing copies of the version of the Software Products to be replaced
have been returned or destroyed, except for archival copies which are
impractical to remove from SBC's backup tapes.  In addition, SBC shall certify
to HWM in writing that use of the replaced Software Products shall cease
(except if use is required due to a regulatory proceeding as provided below).

Software Products shall be delivered to the site(s) specified on the Order.
SBC may copy the Software Products as necessary to distribute to SBC's various
platforms.

RELOCATION OF SOFTWARE

SBC may redesignate the location at which the Software will be installed, and
will notify HWM of such new location and the effective date of the
redesignation.  Concurrent operation of the Software at a second location for a
period not to exceed six (6) months for the purpose of redesignating the
assigned using location will not require an additional license or charge.  The
term "location" or "Installation Site" as used herein will mean each facility
designated by SBC on each particular Order at which the Software is to be
installed.

The License granted under an Order for a designated Installation Site may be
transferred:  (a) to a back-up location if the computer(s) at the designated
Installation Site is/are inoperative due to malfunction, to performance of
preventative maintenance, to engineering changes or to changes in features or
model, until such computer(s) is/are restored to operative status and
processing of the data already entered in the computer(s) at the back-up
location has been completed, or (b) to one other location for assembly,
compilation or use of the Software if the specifications of the computer(s) at
the designated Installation Site are such that the Software cannot be assembled
or compiled thereon.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   67
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 66 of 92



RETURN OF SOFTWARE

Except as otherwise provided herein, SBC agrees to certify to HWM in writing,
within thirty (30) days after the termination or cancellation of any License
Order (except in the event of termination or cancellation due to default by
HWM), that use of the Software licensed thereunder shall cease (except if use
is required due to a regulatory proceeding as provided herein) and that the
original and all copies of all Software licensed thereunder have been destroyed
or returned to HWM.  If continued use is required due to a decision or order of
a regulatory body, SBC shall notify HWM and make arrangements for necessary use
of the Software.  However, any output created or generated through use of the
Software shall remain the property of SBC, and it shall not be returned to HWM.

RIGHT TO REPRODUCE MATERIAL AND DOCUMENTATION

SBC will have the right to reproduce all printed material, Documentation and
all machine-readable Software supplied by HWM hereunder, provided that such
reproduction of printed material and Documentation is made solely for SBC's
internal use.  Any such reproductions will include any HWM notice contained in
the original items being reproduced.

In the case of severe Equipment failure, SBC may transfer this copy to
temporary Equipment.  Any copies will be removed from the temporary Equipment
when the Equipment or Software is restored to its pre-emergency specifications.

RISK OF LOSS

If any Software is lost, damaged or made invalid during shipment or prior to
acceptance, HWM will promptly replace the Software and Software storage media
at no additional charge to SBC.

If any Software is lost or damaged while in the possession of SBC after
acceptance, HWM will promptly replace the Software at the established charge
for the Software storage media unless such media is provided by SBC.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   68
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 67 of 92



SOFTWARE UPDATES

HWM agrees to supply improvements, new releases, updates, extensions, and other
changes to Software ordered hereunder which (a) HWM provides to other customers
who have a license to use such Software, (b) HWM deems to be logical
improvements or extensions to the original Software supplied to SBC, or (c) are
necessary for the Software to continue their computing functions as mutually
agreed upon between HWM and SBC.  SBC will have the right to accept or reject
any such revised version of the Software or to remove same and replace it with
the previous version if such new version will degrade or impair SBC's computer
system.  In addition, HWM will insure that Software licensed hereunder is kept
current with new releases of the operating system(s) listed in HWM's standard
published GPS Specifications.

HWM agrees to provide SBC a reasonable amount of mail and telephone consulting
assistance in the event that difficulties occur in the use of the Software or
in SBC's interpretation of the results of Software use.  Upon notification by
SBC that such consulting service is required, HWM will proceed promptly toward
the resolution of all such reported problems by using and coordinating whatever
HWM resources are required to resolve the problem.

If such problem cannot be resolved by telephone or written communication within
thirty (30) days from the time SBC first contacts HWM, then if requested by
SBC, HWM will provide an employee, capable of resolving such problem at the
applicable SBC Installation Site for no additional charge, provided that the
problem is the failure of the Software to perform to general GPS Specifications
previously provided to SBC or to GPS Specifications contained in the then
current applicable Software GPS Specifications.  If the error or malfunction
causes downtime on SBC's computer system on which the Software is installed,
then HWM will proceed promptly to resolve the problem.

In the event that a problem is found to be due to (a) a modification to the
Software made by SBC or (b) use of the Software in a manner which is not in
accordance with the instructions provided by HWM to SBC relating to use of the
Software, SBC agrees to pay HWM for all Technical Support or Services performed
to resolve or investigate the particular problem at HWM's then current
published standard time and material rates and reimburse HWM for any related
expenses incurred, provided that such expenses are reasonable and HWM furnishes
to SBC supporting documentation therefor.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   69
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 68 of 92





SOURCE AVAILABILITY AND SOURCE CODE ESCROW  

CODE & DOCUMENTATION ESCROW

A.       GENERAL TERMS.  The following Code and Documentation escrow provisions
shall apply to (1) any Code and Documentation of the Software provided as part
of the GPS Materials provided to SBC pursuant to this Agreement including
mobile unit software, host communications handler software; and (2) any Code
and Documentation for software utilized by HWM's Network Service Center to
provide enhanced switching services in connection with the GPS Materials (the
"Deposited Code and Documentation").  However, these escrow provisions shall
not apply to any software which is owned by a third party (the "Licensed
Materials").  SBC shall be able to use any intellectual property for its
purposes to enable SBC to continue to provide the functionality described in
the GPS Specifications and various call flows to perform all functionality and
services including any modifications to the Software to effect the use of the
[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]  Such escrow shall
occur regardless of whether payment has been made, or a dispute between the
parties is in progress.  For purposes of this Section, the term "Code" shall
include:

         1. CODE.  Computer programming code. If not otherwise specified, Code
         shall include both Object Code, Source Code and Compiler
         Code/Compilation Programs. Code shall include any Maintenance
         Modifications, and/or Enhancements created by HWM from time to time.

         2. OBJECT CODE.  The machine-readable form of the Code.

         3. SOURCE CODE.  The human-readable form of the Code and related
         system documentation including all comments and any procedural code
         such as job control language.

         4. COMPILER CODE/COMPILATION PROGRAMS.  All programs needed to compile
         the source code to object code language.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   70
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 69 of 92



SOURCE AVAILABILITY AND SOURCE CODE ESCROW (CONTINUED)  

CODE & DOCUMENTATION ESCROW (CONTINUED)

B.       ESCROW DEPOSIT.  HWM will provide the Deposited Code and Documentation
to an escrow agent to be mutually selected by HWM and SBC.  HWM will maintain
the Deposited Code and Documentation current with a filing delay of no more
than sixty (60) days following development of such Deposited Code and
Documentation related to any maintenance modifications and/or enhancements.

C.       PAYMENT OF ESCROW AGENT FEES.  HWM shall be responsible for and pay
any and all fees due to the escrow agent in connection with said escrow
agreement.

D.       AVAILABILITY OF DEPOSITED MATERIALS TO SBC.  The escrow agent shall
release, upon actual receipt of written notice from SBC and/or HWM, the
Deposited  Code and Documentation to SBC if any of the following conditions
occurs subject to the resolution of any objections to the delivery thereof
served by HWM as specified below herein: (1) an assignment by HWM for the
benefit of creditors; (2) the filing of a petition in bankruptcy by HWM; (3)
the filing of creditors of HWM of a petition in bankruptcy against HWM which is
not stayed or dismissed within ninety (90) days; (4) the appointment of a
receiver over the assets of HWM; (5) the parties reasonable disagreement with
respect to the charges to be paid by SBC to HWM under this Agreement (6) HWM's
material breach of this Agreement; and/or (7) HWM's decision to cease
conducting the business which is the subject of this Agreement.  The escrow
agent shall serve HWM with fifteen (15) days prior written notice before
delivering the Deposited  Code and/or Documentation to SBC so that HWM may have
a reasonable opportunity to serve upon the escrow agent its written objections
to delivery thereof to SBC.  In the event that a dispute arises as to whether
any of the foregoing conditions has been met, the escrow agent shall
immediately appoint a mutually acceptable neutral third party arbitrator, with
expertise in intellectual property and contract law, who will, no later than
three (3) weeks after the initial demand of SBC for the release of the
Deposited Code and Documentation, direct the escrow agent to hold or release
the applicable portion of the Code and/or documentation according to the
arbitrator's sole interpretation of this Agreement, the Source Code Escrow
Agreement, and any exhibits thereto.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   71
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 70 of 92



SOURCE AVAILABILITY AND SOURCE CODE ESCROW (CONTINUED)  

CODE & DOCUMENTATION ESCROW (CONTINUED)

E.       CONDITIONS OF DELIVERY.  The Deposited Code and Documentation, if and
when delivered to SBC shall be delivered subject to the following terms and
conditions:

         1.      SBC will have no right to make copies of, or to license or
         sublicense, the Deposited Code and Documentation, other than the
         rights which SBC has been granted to license or sublicense the same in
         this Agreement.

         2.      SBC shall acquire no rights in the Deposited Code and
         Documentation delivered by the Escrow Agent other than the license
         rights granted by this Agreement and shall utilize the Deposited Code
         and Documentation solely for the purpose of performing and/or
         completing a maintenance and support of the applicable Licensed
         Materials.

         3.      SBC shall keep the Deposited Code and Documentation at a
         single location at SBC's Corporate Headquarters and will have a right
         to use only one (1) copy of the Deposited Code and Documentation, with
         the backup copy to be permanently stored as required below.

         4.      SBC's right to use the Deposited Code and Documentation will
         be strictly limited to maintenance and support of the applicable
         licensed Materials.

         5.      Except when actually being utilized for its permitted
         purposes, the  Deposited Code and Documentation will be kept in a
         highly restricted limited access area with access thereto limited to
         designated personnel who have a need to use the Deposited Code and
         Documentation for the purposes permitted hereunder.  The  Deposited
         Code and Documentation will be otherwise similarly protected by SBC in
         a manner consistent with the manner in which it protects its own
         highly confidential Intellectual Property (but no less than reasonable
         manner), for the duration of time necessary to complete such permitted
         purpose.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   72
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 71 of 92



SOURCE AVAILABILITY AND SOURCE CODE ESCROW (CONTINUED)  

CODE & DOCUMENTATION ESCROW (CONTINUED)

         6.      All designated personnel with access to the Deposited Code and
         Documentation will (i) be advised in writing of the trade secret and
         confidential nature of the Deposited Code and Documentation and HWM's
         proprietary interest therein; and (2) previously have agreed to comply
         with written confidentiality restrictions substantially similar to the
         confidentiality restrictions set forth in this Agreement.

         7.      SBC shall immediately return the Deposited Code and
         Documentation, and copies thereof within its possession or control, to
         HWM or the escrow agent when SBC no longer requires the Deposited Code
         and Documentation for support or maintenance purposes.

SOURCE CODE

If the applicable Order requires HWM to provide SBC with source code to the
licensed Software, HWM shall, prior to the Performance Date and at no
additional charge to SBC, provide SBC with a complete copy of the source code
for the Software and any other information necessary to enable SBC to maintain
the Software.  During the license term HWM shall promptly provide SBC with
copies of any changes in or additions to such source code or other information.

Unless HWM has already provided SBC with a copy of current version of the
source code for the Software HWM shall, within ten (10) days after HWM's
receipt of SBC's written request therefor and at no additional charge, provide
SBC with a complete copy of the current version of the source code for the
Software hereunder and any other information necessary to enable SBC to
maintain the Software.  SBC shall thereafter have a perpetual royalty-free
right to use the source code for the limited purpose of maintaining the
Software and for the purposes specified by modifications hereto.

STANDARD OF PERFORMANCE

If the Software, when operated by SBC's personnel during the Acceptance Test
for the specified Acceptance Period, operates in conformance with the mutually
agreed upon GPS Specifications, it will be deemed to have met the GPS
Specifications.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   73
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 72 of 92



TITLE

Title to Software will remain in HWM.  SBC will have the right to make a
reasonable number of copies of the Software for use as authorized in an Order.

USE OF THE SOFTWARE

HWM agrees that Software licensed hereunder may be used by any present or
future subsidiary, affiliate or parent corporation of SBC, whether the use be
carried out on site or by remote electronic access, and that all materials
developed by SBC will remain the property of SBC.

SBC will not use, print, copy, modify, translate, alter or display the
Software, in whole or in part, except as expressly provided for in this
Agreement.  Further, SBC will not reverse compile, decompile or reverse
engineer any Software and any attempt to do so will be a breach of this
Agreement.

USE OF PLATFORMS

HWM agrees and promises to use the applicable platforms on which Software
Products are installed only for the purposes of installing, maintaining, or
otherwise supporting the Software Products.  Any other use of such platforms
shall constitute a breach of this Agreement.

WARRANTY [Text has been omitted pursuant to a request for confidential
treatment. The omitted material has been filed separately with the SEC.] HWM
hereby represents and warrants to SBC as follows:[Text has been omitted pursuant
to a request for confidential treatment. The omitted material has been filed
separately with the SEC.] 1. It has the right to grant to SBC a license to use
the Software Products set forth in each Order issued hereunder.

2.        All Software Products furnished or developed under this Agreement
          (including custom Software Products) shall be (i) free from defects
          in material and workmanship, (ii) substantially conform to and
          perform in accordance with HWM's then current published GPS
          Specifications, and (iii) operate satisfactorily in the system
          environment in which the Software Products are initially installed.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   74
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 73 of 92



WARRANTY (CONTINUED) 

3.       Except as disclosed in the GPS Specifications appended to this
         Agreement, the Software Products licensed hereunder contain no
         "computer viruses", other "contaminants", including any codes, or
         instructions that may be used to access, modify, delete, damage, or
         disable SBC's computer system.  If any "third party" software of other
         vendors is incorporated into the Software Products furnished by HWM
         hereunder, HWM shall obtain comparable warranties enforceable by SBC
         from such vendors.

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

5.       HWM warrants that the Software does not contain any disabling code
         which would render the Software Products unusable until a patch or new
         password is entered on the machine for which it is licensed.

6.       HWM warrants for a period of [Text has been omitted pursuant to a
         request for confidential treatment. The omitted material has been
         filed separately with the SEC.] from furnishing a Software Product
         that any magnetic medium on which portions of a Software Product are
         furnished shall be free from defects in material, workmanship or
         recording.

[TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT. THE
OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   75
                                                            Agreement No. 980427
                                                                       SECTION B
                                                                   Page 74 of 92



WARRANTY (CONTINUED) 

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.] 

8.       HWM agrees to perform the Services in a first-class, workmanlike
         manner, with care, skill and diligence, and in accordance with
         applicable standards currently recognized by HWM's profession. HWM
         further agrees to be responsible for the professional quality,
         technical accuracy, completeness and coordination of all reports,
         designs, drawings, plans, information, specifications and other items
         and Software Products (including custom Software Products) and Services
         furnished under this Agreement. If HWM fails to meet applicable
         professional standards, HWM will, without additional compensation,
         correct or revise any errors or deficiencies in its reports, drawings,
         specifications, designs or other items or Software Products and
         Services furnished hereunder. 

9.       [Text has been omitted pursuant to a request for confidential
         treatment. The omitted material has been filed separately with the
         SEC.]Generally available Software Products will contain, at a minimum,
         the same functions and features as the associated Beta Test copy of
         such Software Products.

The above warranties (except for the warranties contained in paragraphs 1 and
6) shall be effective for a period of [Text has been omitted pursuant to a
request for confidential treatment. The omitted material has been filed
separately with the SEC.] of the Software Products and/or the rendering of the
Services to SBC.  The warranty contained in paragraph 1 shall be effective
[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.] HWM agrees to
correct, replace or credit, at SBC's sole option and at HWM's sole expense, any
non-conforming Software Product which is due to errors, malfunctions, or the
acts or omissions of HWM, its employees or agents.  In addition, pursuant to
paragraph (6), HWM agrees to replace any defective media at no charge to SBC
during the [Text has been omitted pursuant to a request for confidential
treatment.  The omitted material has been filed separately with the SEC.]
warranty period.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   76
                                                            Agreement No. 980427
                                                                       SECTION C
                                                                   Page 75 of 85





                 SECTION C - GPS MATERIAL MAINTENANCE SERVICES

GENERAL

HWM agrees to provide maintenance service on GPS Material acquired hereunder by
SBC upon the terms and conditions set forth in this Agreement and in Orders
placed by SBC pursuant to this Section and accepted by HWM.  Such Orders will
be deemed accepted by HWM provided the Orders are in conformance with this
Section.  Prices for parts and HWM's hourly rates are included in Appendix II.

ACCESS

SBC will provide HWM with reasonable access to the GPS Material to perform
maintenance service.

BASIC SERVICE

HWM agrees to perform the following basic maintenance service: accomplish
regularly scheduled Preventive Maintenance, if applicable; update the GPS
Material to provide the latest reliability improvements; respond to requests
for and accomplish Remedial Maintenance during the Principal Period; supervise
the preparation of the GPS Material for movement and set-up after movement; and
provide all tools and test equipment necessary for the maintenance of the GPS
Material.  There will be no maintenance charges for the following basic
maintenance services if performed during the applicable warranty period and if
the malfunction or inoperative condition is covered under the applicable
warranty:

         1.    Preventive Maintenance, unless performed outside the Principal
               Period, which will include, for purposes of this paragraph, the
               mutually agreed to scheduled time for Preventive Maintenance.

         2.    Remedial Maintenance which was begun during the Principal Period
               or an extension thereof or when HWM was notified during the
               Principal Period or extension thereof of the need for Remedial
               Maintenance.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   77
                                                            Agreement No. 980427
                                                                       SECTION C
                                                                   Page 76 of 85





BASIC SERVICE (CONTINUED)

         3.    Remedial Maintenance required within a thirty (30) day period
               due to a recurrence of the same malfunction.

         4.    Time spent by maintenance personnel after arrival at SBC's Site
               awaiting the arrival of additional maintenance personnel and/or
               delivery of parts, etc., after a service call has commenced.

         5.    Remedial Maintenance required when the scheduled Preventive
               Maintenance preceding the malfunction had not been performed.

         6.    Parts required for Preventive or Remedial Maintenance, including
               replacement parts.

         7.    Remedial Maintenance performed outside the Contracted Period of
               Coverage, unless specifically agreed otherwise by SBC in
               writing.

When so agreed, SBC will pay for Remedial Maintenance requested to be performed
outside of the Contracted Period of Coverage at HWM's published rates;
relocation of GPS Material within a SBC location during the Contracted Period
of Coverage; unpacking, installation and Acceptance Tests, any GPS Material
certification for maintenance, and packing, removal and supervising the removal
or moving of any GPS Material.

Preventive Maintenance, if applicable, will be performed at mutually agreed
upon times which do not unreasonably interfere with SBC's use of the GPS
Material.  HWM will specify in writing the frequency and duration of the
Preventive Maintenance required for the GPS Material, and SBC will specify the
Preventive Maintenance schedule which may be modified by mutual agreement.

ENGINEERING CHANGES

Engineering changes which are made to GPS Material after its manufacture will
be incorporated by HWM into the GPS Material at SBC's site.  These changes will
be incorporated only after consultation with and scheduling by SBC.  Time
required for any modifications or engineering changes will be subject to the
provisions hereof relating to maintenance credit for downtime.  In addition,
HWM will, during such consultation, specify any related products which may be





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   78
                                                            Agreement No. 980427
                                                                       SECTION C
                                                                   Page 77 of 85





ENGINEERING CHANGES (CONTINUED)

affected by such engineering changes.  All modifications will be subject to the
provisions of the Clause entitled ACCEPTANCE.

There will be no charge for the installation of engineering changes due to
Warranty covered defects on GPS Material or a recall of the GPS Material for
safety related defects.

ESCALATION PROCEDURE

HWM will endeavor to initiate on-site remedial Service at SBC's site within the
specified response time.  If the trouble has not been corrected within six (6)
hours after SBC's request for Service, HWM's support center personnel will
initiate an escalation process to provide HWM's regional engineering
assistance.  If the trouble has not been corrected within twelve (12) hours
after SBC's request, the problem will be escalated to HWM's engineering control
center.  No charge will be made for any such escalation.

FORM OF ORDER

Orders for GPS Material maintenance will be written on SBC's forms and will
contain the following information:

         1.    The incorporation by reference of this Agreement.
         2.    A complete list of the GPS Material to be serviced, specifying
               quantity, type, description, the monthly maintenance charge for
               each item of GPS Material, the term of the Order and the total
               annual/monthly maintenance charges payable by SBC.
         3.    The location at which the GPS Material is installed, including
               floor, street, city, state and zip code.
         4.    The designation of a point of contact at which HWM's maintenance
               representative will receive notification of GPS Material
               failure.
         5.    The Principal Period, or extension thereof, selected by SBC.
         6.    Any special terms and conditions agreed upon between the
               parties.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   79
                                                            Agreement No. 980427
                                                                       SECTION C
                                                                   Page 78 of 85





MAINTENANCE BY OTHERS

SBC will not knowingly permit persons other than authorized representatives of
HWM to perform maintenance or attempt repairs to any GPS Material while that
GPS Material is covered by maintenance provided by HWM hereunder, unless
otherwise agreed by HWM.

MAINTENANCE LOG

HWM agrees to maintain a legible maintenance log at each Installation Site
which will be made available to SBC for inspection upon request.  This log will
include, at a minimum, the following:

         1.      The date and the time HWM was notified.
         2.      The date and time of HWM's arrival.
         3.      The time the GPS Material was made available to HWM.
         4.      The type and model number(s) of the GPS Material.
         5.      A description of the malfunction.
         6.      The time spent for repair.
         7.      The corrective action taken, including parts used.
         8.      The time the GPS Material was made available to SBC.
         9.      Applicable charges, if any.
         10.     Identification of HWM's representative.
         11.     SBC's representative's signature.
PARTS

There will be no additional charges for replacement parts during the covered
warranty period.  Only new standard parts or parts of equal quality will be
used in effecting repairs.  Parts which have been replaced will become the
property of HWM and will be removed from SBC's Site.  Parts which are installed
on purchased GPS Material will become the property of SBC.

PARTS INVENTORY

HWM agrees to maintain a sufficient supply of spare parts at SBC's Site to make
emergency repairs.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   80
                                                            Agreement No. 980427
                                                                       SECTION C
                                                                   Page 79 of 85





REMEDIAL MAINTENANCE

Remedial Maintenance will be performed after notification to HWM that the GPS
Material is inoperative.  HWM will furnish SBC with a designated point of
contact for such notification.  During the Principal Period, or extension
thereof, set forth in the applicable Order, HWM agrees to have a Field Engineer
arrive at SBC's Site within twenty-four (24) hours after notification that
Service is required.  Outside such Principal Period, or extension thereof, HWM
will use its best efforts to have its Field Engineer arrive at SBC's Site
within twenty-four (24) hours after notification that Service is required.
Such Service calls will be made at HWM's then current standard per-call rates.

Only one (1) Field Engineer will respond to a request for maintenance outside
of the Principal Period or extension thereof, unless it is mutually agreed that
more than one (1) Field Engineer is required.

The Principal Period or extension thereof may be changed by SBC upon thirty
(30) days' prior written notice to HWM.

Separate Principle Periods of Maintenance may be specified when there are two
(2) or more installations of HWM provided GPS Material at the same Site.

In the event that HWM finds itself unable to meet the standards set forth above
in responding to SBC's maintenance requests, HWM will, in consideration of the
size of the installed base, locate a Field Engineer within a fifty (50) mile
radius of SBC or, upon the reasonable request of HWM, SBC may provide office
space for such Field Engineer at SBC's Site.

STORAGE AND WORK SPACE

SBC will provide at no charge to HWM space for spare parts and working space,
including heat, light, ventilation, electric current and outlets for use by
HWM's maintenance personnel.  These facilities will be located at SBC's site
within a reasonable distance of the GPS Material to be maintained.  HWM will
maintain this space in an orderly manner, consistent with SBC's site rules.
SBC will not be liable for loss or damage to HWM's equipment or materials
stored on SBC's site.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   81
                                                            Agreement No. 980427
                                                                       SECTION C
                                                                   Page 80 of 85






TERM OF ORDER

The maintenance term will commence on the date set forth in the applicable
Order (but in no event earlier than the expiration of the warranty period for
the GPS Material involved) and continue for the initial maintenance term
specified therein and thereafter until canceled or terminated by SBC as
provided herein.

TIME AND MATERIAL

From time to time SBC may require Maintenance on GPS Material not covered under
a Maintenance Order.  In these cases SBC will notify HWM of the problem and HWM
will provide assistance on a time and material basis.  HWM will provide an
invoice to SBC for the services performed and SBC will make payment thirty (30)
days from the receipt of the invoice.

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   82
                                                            Agreement No. 980427
                                                                       SECTION D
                                                                   Page 81 of 85




                        SECTION D - HWM NETWORK SERVICES

GENERAL

This Section sets forth the terms and conditions relating to collection and
delivery of data by HWM as well as the specific Services provided for the
monthly fee listed in Appendix II, Pricing.

SCOPE OF RESPONSIBILITY

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

SCOPE OF RESPONSIBILITY (CONTINUED)

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

NETWORK SERVICE TERMS

a        SERVICES PROVIDED. [Text has been omitted pursuant to a request for
confidential treatment. The omitted material has been filed separately with the
SEC.]

b        AVAILABILITY OF SERVICE.
[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

c        SERVICE COMMITMENT.  [Text has been omitted pursuant to a request for
confidential treatment. The omitted material has been filed separately with the
SEC.]

SCOPE OF RESPONSIBILITY (CONTINUED)

NETWORK SERVICE TERMS (Continued)

       [TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL TREATMENT.
       THE OMITTED MATERIAL HAS BEEN FILED SEPARATELY WITH THE SEC.]

d    RATES, CHARGES, BILLING AND PAYMENT FOR SERVICES.  HWM will render to SBC
a monthly combined bill for the Enhanced Services and Enhanced





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   83
                                                            Agreement No. 980427
                                                                       SECTION D
                                                                   Page 82 of 85




     Cellular Roaming service with each listed separately.  SBC will receive a
     paper bill unless electronic media is requested.  SBC agrees to accept
     responsibility for all calls made by SBC or its authorized users.  The
     rates for all services hereunder effective on the date of this Agreement
     are set forth in this Agreement.  Payment shall be due net thirty (30)
     after receipt of invoice.  All service fee payments shall be due and
     payable to HWM Corporation at P.O. Box 970779, Dallas, Texas, 75397-0779.

e    TAXES, DUTIES & SURCHARGES FOR SERVICES.   All service charges are subject
     to federal, foreign, state and/or local excise, sales, use, property,
     retailers, occupation or other taxes, duties or surcharges.  If any
     governmental tax, duty or surcharge is determined to be applicable, then
     SBC shall pay to HWM the full amount of any such tax, duty or surcharge at
     the time payment is due for other charges pursuant to paragraph d above
     herein.

f    NONPAYMENT OF SERVICE FEES. A late payment charge of ten dollars ($10.00) 
     or one and one-half (1 1/2) percent of the outstanding balance, whichever 
     is higher, shall be assessed on a monthly basis on payments not paid by the
     due date.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   84
                                                            Agreement No. 980427
                                                                       SECTION D
                                                                   Page 83 of 85




SCOPE OF RESPONSIBILITY (CONTINUED)

NETWORK SERVICE TERMS (CONTINUED)

g        PRIVACY OF COMMUNICATION. In rendering service under this Agreement,
         HWM will make reasonable efforts to protect the privacy of SBC's
         communications. However, absolute privacy of communications is not
         guaranteed. SBC acknowledges that wireless communications, including
         cellular, satellite and other transmissions, are subject to
         interceptions by parties possessing certain types of radio equipment
         without the knowledge or permission of the user.

h        LIMITED WARRANTY FOR SERVICES. During the duration of this Agreement,
         HWM warrants that the Enhanced Services provided during Phases I, II
         and III shall operate in good working order and that the Enhanced
         Cellular Roaming services provided only during Phase I shall be in good
         working order and available to SBC's vehicles equipped with Mobile
         Communications Unit(s) when within the service areas of cellular
         carriers offering cellular services to HWM.

i        LIMITATION OF LIABILITY AND EXCLUSIVE REMEDY FOR SERVICES. SBC agrees
         that the liability of HWM, if any, for interruptions, delays, and
         failures in transmission of service ("service problems") to SBC (except
         for SBC's own negligence or misconduct, for which SBC shall be solely
         liable), is limited solely to the allowance of a credit as specified in
         the Grade of Service section of this Agreement.

j        REGULATORY STATUS. HWM and SBC acknowledge that HWM is a private
         enhanced services provider, and that HWM's provision of the Enhanced
         Services and its obtaining for SBC the Enhanced Cellular Roaming, are
         in no way intended to impute to HWM the regulatory status of
         telecommunications common carrier. To the extent the telecommunications
         services addressed by this Agreement are provided to SBC by third party
         telecommunications companies, HWM and SBC acknowledge that only the
         third party telecommunications company providing such services may be
         construed, if applicable, as a telecommunications common carrier. To
         the extent federal, state, or local laws or regulations change or are
         interpreted otherwise, SBC agrees to execute any reasonable retroactive
         modification





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   85
                                                            Agreement No. 980427
                                                                       SECTION D
                                                                   Page 84 of 85




SCOPE OF RESPONSIBILITY (CONTINUED)

NETWORK SERVICE TERMS (CONTINUED)

         to this agreement which does not affect the nature or cost of the
         service, to the extent necessary to protect HWM against unfavorable
         regulatory classifications.

k        INTELLECTUAL PROPERTY RIGHTS. Unless otherwise specified in this
         Agreement, HWM retains sole title to any intellectual property of HWM
         utilized in conjunction with this Agreement. This Agreement does not
         constitute a license to use any intellectual property owned or
         controlled by HWM, except as set forth in this Agreement.

ALARM MONITORING

SCOPE

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

DESCRIPTION OF SERVICE

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   86
                                                            Agreement No. 980427
                                                                       SECTION E
                                                                   Page 85 of 85





                           SECTION E-ENTIRE AGREEMENT

ENTIRE AGREEMENT

The terms contained in this Agreement, and any Orders, including all Exhibits
and subordinate documents attached to or referenced in the Agreement or any
Orders, will constitute the entire agreement between HWM and SBC with regard to
the subject matter hereof and supersede all prior oral and written
communications, agreements and understandings of the parties, if any, with
respect hereto.  This Agreement may not be modified expect by a written
instrument signed on behalf of both parties by the representatives who sign
this Agreement or their successors in title and authority.  If either
representative is no longer employed by SBC/HWM or has been demoted, or if the
approval level no longer exists, a manager at a level equal to or exceeding the
original level must execute revisions to this Agreement.

SOUTHWESTERN BELL TELEPHONE COMPANY        HIGHWAYMASTER CORPORATION ACCEPTED: 
ACCEPTED:

By: (x) Steve Welch by W. J. Given         By:  (x) Jana Bell
    ------------------------------            --------------------------
Title:   President-Corporate and           Title:   President and CEO
      ----------------------------               ----------------------------
          Administrative Services
      ---------------------------
Date: 12/18/98                                     Date: 1/13/99
      --------                                           -------

PACIFIC BELL ACCEPTED:                     NEVADA BELL ACCEPTED:

By: (x) Steve Welch by W. J. Given         By: (x) Steve Welch by W. J. Given
    ------------------------------             -------------------------------
Title:   President-Corporate and           Title:  President-Corporate and
         -----------------------                  ----------------------------
         Administrative Services                   Administrative Services
         ------------------------                 ----------------------------
Date: 12/18/98                             Date: 12/18/98
      --------                                   --------

SOUTHERN NEW ENGLAND TELEPHONE ACCEPTED:

By: (x) Steve Welch by W. J. Given
    ------------------------------
Title:   President-Corporate and
         -----------------------
         Administrative Services
         -----------------------
Date: 12/18/98
      --------





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   87
                                                            AGREEMENT NO. 980427
                                                                      APPENDIX I
                                                                    PAGE 1 OF 25





                        APPENDIX I - GPS SPECIFICATIONS

          [TEXT HAS BEEN OMITTED PURSUANT TO A REQUEST FOR CONFIDENTIAL
                    TREATMENT. THE OMITTED MATERIAL HAS BEEN
                         FILED SEPARATELY WITH THE SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   88
                                                            AGREEMENT NO. 980427
                                                                     APPENDIX II
                                                                     PAGE 1 OF 3



        APPENDIX II - PRICING FOR DEPLOYMENT OF INITIAL 11,5000 GPS UNITS

           [Text has been omitted pursuant to a request for confidential
           treatment. The omitted material has been filed separately with the
           SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   89
                                                            AGREEMENT NO. 980427
                                                                     APPENDIX II
                                                                     PAGE 2 OF 3


APPENDIX II - PRICING FOR DEPLOYMENT ABOVE INITIAL 11,5000 GPS UNITS

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   90
                                                            AGREEMENT NO. 980427
                                                                     APPENDIX II
                                                                     PAGE 3 OF 3





HWM NETWORK SERVICE CENTER MONTHLY FEE

[Text has been omitted pursuant to a request for confidential treatment. The
omitted material has been filed separately with the SEC.]

NOTE:    PRICES ABOVE DO NOT INCLUDE APPLICABLE TAXES, AND SURCHARGES WHICH WILL
         BE BILLED AS A SEPARATE ITEM ON THE INVOICE.





                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   91
                                                            AGREEMENT NO. 980427
                                                                    APPENDIX III
                                                                     PAGE 1 OF 1



                          APPENDIX III - CHANGE ORDER


- -------------------------------------
CONTRACT/P.O. #
- -------------------------------------

- --------------------------------------------
LOCATION:
- --------------------------------------------

- -------------------------------------------------------------------------------
REQUEST NUMBER      ORIGINATOR             DATE ORIGINATED      DATE ACCEPTED
- --------------      ----------             ---------------      -------------




- -------------------------------------------------------------------------------


- -------------------------------------------------------------------------------
DETAILED DESCRIPTION OF CHANGE REQUESTED (ATTACH ADDITIONAL INFORMATION IF
REQUIRED)
- -------------------------------------------------------------------------------




- -------------------------------------------------------------------------------


- -------------------------------------------------------------------------------
IDENTIFY COST,
IF ANY:
- -------------------------------------------------------------------------------

- -------------------------------------------------------------------------------
ARE CHANGES REQUIRED TO THE GPS SPECIFICATIONS - IF YES, 
DESCRIBE AND ATTACH COPY OF CHANGES REQUESTED                   YES       NO
                                                               -----     ----


- -------------------------------------------------------------------------------


- ---------------
AUTHORIZATIONS:
- ---------------

- -------------------------------------------------------------------------------

SBC:                                 HWM:
- -------------------------------------------------------------------------------

NAME:                                NAME:
- -------------------------------------------------------------------------------

DATE:                                DATE:
- -------------------------------------------------------------------------------


UPON ACCEPTANCE RETURN ONE COPY TO:

CHRIS VILCINSKAS, 1010 PINE, 9-E-80, ST. LOUIS, MO. 63101





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                     companies except by written agreement.
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                                                            AGREEMENT NO. 980427
                                                                     APPENDIX IV
                                                                     PAGE 1 OF 2

           APPENDIX IV - EXECUTIVE ORDERS AND ASSOCIATED REGULATIONS



Work under this contract may be subject to the provisions of certain Executive
Orders, federal laws, state laws, and associated regulations governing
performance of this contract including, but not limited to: Executive Order
11246, Executive Order 11625, Executive Order 11701, and Executive Order 12138,
Section 503 of the Rehabilitation Act of 1973 as amended and the Vietnam Era
Veteran's Readjustment Assistance Act of 1974.  To the extent that such
Executive Orders, federal laws, state laws, and associated regulations apply to
the work under this contract, and only to that extent, Contractor agrees to
comply with the provisions of all such Executive Orders, federal laws, state
laws, and associated regulations, as now in force or as may be amended in the
future, including, but not limited to the following:

1. EQUAL EMPLOYMENT OPPORTUNITY DUTIES AND PROVISIONS OF GOVERNMENT CONTRACTORS

   In accordance with 41 C.F.R.Section 60-1.4(a), the parties incorporate
herein by this reference the regulations and contract clauses required by that
section, including but not limited to, Contractor's agreement that it will not
discriminate against any employee or applicant for employment because of race,
color, religion, sex, or national origin.  The Contractor will take affirmative
action to ensure that applicants are employed, and that employees are treated
during employment, without regard to their race, color, religion, sex, or
national origin.

2. AGREEMENT OF NON SEGREGATED FACILITIES

   In accordance with  41 C.F.R.Section 60-1.8, Contractor agrees that it does
not and will not maintain or provide for its employees any facilities
segregated on the basis of race, color, religion, sex, or national origin at
any of its establishments, and that it does not and will not permit its
employees to perform their services at any location, under its control, where
such segregated facilities are maintained.  The term "facilities" as used
herein means waiting rooms, work areas, restaurants and other eating areas,
time clocks, rest rooms, wash rooms, locker rooms and other storage or dressing
areas, parking lots, drinking fountains, recreation or entertainment areas,
transportation, and housing facilities provided for employees; provided, that
separate or single-user restroom and necessary dressing or sleeping areas shall
be provided to assure privacy between the sexes.

3. AGREEMENT OF AFFIRMATIVE ACTION PROGRAM

   Contractor agrees that it has developed and is maintaining an Affirmative
Action Plan as required by 41 C.F.R.Section 60-1.4(b).

4. AGREEMENT OF FILING

   Contractor agrees that it will file, per current instructions, complete and
accurate reports on Standard Form 100 (EE0-1), or such other forms as may be
required under 41 C.F.R.Section 60-1.7(a).

5. AFFIRMATIVE ACTION FOR HANDICAPPED PERSONS AND DISABLED VETERANS, VETERANS
   OF THE VIETNAM ERA.

   In accordance with  41 C.F.R.Section 60-250.20, and 41 C.F.R.Section
60-741.20, the parties incorporate herein by this reference the regulations and
contract clauses required by those provisions to be made a part of government
contracts and subcontracts.

6. UTILIZATION OF SMALL, SMALL DISADVANTAGED AND WOMEN-OWNED SMALL BUSINESS
   CONCERNS

   As prescribed in 48 C.F.R., Ch. 1, 19.708(a):

   (a)  It is the policy of the United states that small business concerns,
small business concerns owned and controlled by socially and economically
disadvantaged individuals and small business concerns owned and controlled by
women shall have the maximum practicable opportunity to participate in
performing contracts let by any Federal agency, including contracts and





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                  and is not for general distribution within or
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                     companies except by written agreement.
   93
                                                            AGREEMENT NO. 980427
                                                                     APPENDIX IV
                                                                     PAGE 2 OF 2
           APPENDIX IV - EXECUTIVE ORDERS AND ASSOCIATED REGULATIONS



sub-contracts for systems, assemblies, components, and related services for
major systems.  It is further the policy of the United States that its prime
contractors establish procedures to ensure the timely payment amounts due
pursuant to the terms of the subcontracts with small business concerns, small
business concerns owned and controlled by socially and economically
disadvantaged individuals and small business concerns owned and controlled by
women.

   (b)  The Contractor hereby agrees to carry out this policy in the awarding
of subcontracts to the fullest extent consistent with efficient contract
performance.  The Contractor further agrees to cooperate in any studies or
surveys as may be conducted by the United States Small Business Administration
or the awarding agency of the United States as may be necessary to determine
the extent of the Contractor's compliance with this clause.

   (c)  As used in this contract, the term small business concern shall mean a
small business as defined pursuant to section 3 of the Small Business Act and
relevant regulations promulgated pursuant thereto.  The term small business
concern owned and controlled by socially and economically disadvantaged
individuals shall mean a small business concern which is at least 51 percent
unconditionally owned by one or more socially and economically disadvantaged
individuals; or, in the case of any publicly owned business, at least 51
percent of the stock of which is unconditionally owned by one or more socially
and economically disadvantaged individuals; and (2) whose management and daily
business operations are controlled by one or more such individuals.  This term
also means small business concern that is at least 51 percent unconditionally
owned by an economically disadvantaged Indian tribe or Native Hawaiian
Organization, or a publicly owned business having at least 51 percent of its
stock unconditionally owned by one of these entities which has its management
and daily business controlled by members of an economically disadvantaged
Indian tribe or Native Hawaiian Organization, and which meets the requirements
of 13 CRF part 124.  The Contractor shall presume that socially and
economically disadvantaged individual include Black Americans, Hispanic
Americans, Native Americans, Asian-Pacific Americans, Subcontinent Asian
Americans, and other minorities, or any other individual found to be
disadvantaged by the Administration pursuant to section 8(a) of the Small
business Act.  The Contractor shall presume that socially and economically
disadvantaged entities also include Indian Tribes and Native Hawaiian
Organizations.

   (d)  The term "small business concern owned and controlled by women" shall
mean a small business concern (i) which is at least 51 percent owned by one or
more women, or, in the case of any publicly owned business, at least 51 percent
of the stock of which is owned by one or more women, and (ii) whose management
and daily business operations are controlled by one or more women; and

   (e)  Contractors acting in good faith may rely on written representations by
their sub-contractors regarding their status as a small business concern, a
small business concern owned and controlled by socially and economically
disadvantage individuals or a small business concern owned and controlled by
women.

7. SMALL, SMALL DISADVANTAGED AND WOMEN-OWNED SMALL BUSINESS SUB-CONTRACTING
   PLAN.  

   The sub-contractor will adopt a plan similar to the plan required by 48 CFR 
Ch. 1 at 52.219-9.





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                     companies except by written agreement.
   94



                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                    PAGE 1 OF 18





                                 QUALITY MANUAL




                           HIGHWAYMASTER CORPORATION
                              16479 DALLAS PARKWAY
                              DALLAS, TEXAS  75248
                                 (972) 732-2500






                              DOCUMENTATION REVIEW
          -----------------------------------------------------------
                    TITLE                                  NAME
                                                    
          -----------------------------                --------------
                     COO                                Gordon Quick
          -----------------------------------------------------------
          Director Materials Operations                Todd Whisenant
          -----------------------------------------------------------






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            The information contained herein is for use by authorized
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                  and is not for general distribution within or
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                     companies except by written agreement.
   95
                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                    PAGE 2 OF 18



                                      INDEX

                                                                                              
1    THE CORPORATE QUALITY STATEMENT  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  4
2    QUALITY POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
3    PURPOSE AND APPLICABILITY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
3.1    PURPOSE  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
3.2    APPLICABILITY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
4      QUALTIY SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
4.1    MANAGEMENT RESPONSIBILITY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
4.2    QUALITY SYSTEMS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
4.3    CONTRACT REVIEW  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  6
4.4    DESIGN CONTROL   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
4.5    DOCUMENT CONTROL   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
4.6    PURCHASING   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  8
4.7    PURCHASER SUPPLIED PRODUCTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   11
4.8    PRODUCT IDENTIFICATION / TRACEABILITY  . . . . . . . . . . . . . . . . . . . . . . . . . .   11
4.9    PROCESS CONTROL  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   12
4.10   INSPECTION AND TESTING   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   13
4.11   INSPECTION, MEASURING AND TEST EQUIPMENT   . . . . . . . . . . . . . . . . . . . . . . . .   13
4.12   INSPECTION AND TEST STATUS   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   13
4.13   CONTROL OF NON-CONFORMING PRODUCT  . . . . . . . . . . . . . . . . . . . . . . . . . . . .   14
4.14   CORRECTIVE AND PREVENTIVE ACTION   . . . . . . . . . . . . . . . . . . . . . . . . . . . .   15
4.15   HANDLING, STORAGE, PACKAGING, PRESERVATION AND DELIVERY  . . . . . . . . . . . . . . . . .   16
4.16   QUALITY RECORDS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   16
4.17   INTERNAL QUALITY AUDITS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   17






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                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                    PAGE 3 OF 18






                                                                                              
4.18   TRAINING   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   17
4.19   SERVICING  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   18
4.20   STATISTICAL TECHNIQUES   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   18






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                     companies except by written agreement.
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                                                                      APPENDIX V
                                                                    PAGE 4 OF 18




1        THE CORPORATE QUALITY STATEMENT





                  HIGHWAYMASTER IS A CUSTOMER-ORIENTED SUPPLIER
                 OF QUALITY PRODUCTS AND SERVICES. OUR TEAM IS
                COMMITTED TO BEING THE PREFERRED SUPPLIER TO THE
                INDUSTRIES WE SERVE BY PROVIDING SATISFACTION FOR
           OUR CUSTOMERS. WE ARE DEDICATED TO CONTINUOUS IMPROVEMENT
                 AND STRIVE TO BE THE BEST IN EVERYTHING WE DO.





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                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                    PAGE 5 OF 18





2      QUALITY POLICY

       HighwayMaster is committed to achieving Total Customer Satisfaction and
       promoting continuous improvement throughout the organization. Every
       employee is responsible for identifying and meeting customer
       expectations. We are committed to provide our employees the necessary
       tools, information and authority which allows them to make quality
       decisions for HighwayMaster and its customers.

3      PURPOSE AND APPLICABILITY

3.1    PURPOSE

       The purpose of this quality policy is to present HighwayMaster's concept
       of the requirements for producing products and services that are
       intended to meet the customer's needs and expectations. HighwayMaster is
       committed to the increasing trend towards more stringent customer
       expectations with regard to quality. HighwayMaster also realizes that
       accompanying this trend there has been a growing realization that
       continual improvements in quality are often necessary to achieve and
       sustain good economic performance.

3.2    APPLICABILITY

       This policy is applicable to all products  and services sold by
       HighwayMaster, inclusive of all programs that come under special quality
       specifications and individual customer specifications.

4      QUALITY SYSTEM

       HighwayMaster's quality system seeks to accomplish three objectives
       regarding quality:

         a.  HighwayMaster shall achieve and sustain the quality of the product
             or service produced so as to continually meet the customer's
             stated or implied needs.
         b.  HighwayMaster shall provide confidence to its own management that
             the intended quality is being achieved and sustained.
         c.  HighwayMaster shall provide confidence to the customer that the
             intended quality is being, or will be, achieved in the delivered
             product or service provided.





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                     companies except by written agreement.
   99
                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                    PAGE 6 OF 18



4.1    MANAGEMENT RESPONSIBILITY

       Management will define and document its policy and objectives for, and
       commitment to, Quality. Management has the responsibility for providing
       the necessary planning, resource allocation, training, operations, and
       evaluation of quality. Management will ensure that this policy is
       understood, implemented and maintained at all levels in the
       organization.

4.2    QUALITY SYSTEMS

       HighwayMaster shall institute and sustain a documented quality system.
       This system will ensure that HighwayMaster builds a quality product that
       meets all specified requirements. This system shall include:

4.2.1  The preparation of documented quality system procedures and instructions
       in accordance with our customers requirements.

4.2.2  The effective implementation of those procedures and instructions
       designed to ensure a quality product.

4.2.3  The timely preparation of quality plans and other quality documentation
       as required by the customer. In the interest of standardization and
       minimizing duplication of effort, this Quality Manual will be used as the
       standard Quality Plan. Exceptions to the policy manual will be listed
       separately as the customer Quality Plan.

4.2.4  The identification and acquisition of any controls, processes, inspection
       equipment, tools, fixtures, and other equipment that may be required to
       achieve the desired quality results.

4.2.5  The identification of specific skills needed to achieve the required
       quality and the necessary training to ensure that qualified personnel
       are performing to specified capabilities.

4.2.6  The updating, as required, of quality assurance, inspection and testing
       techniques, equipment and other measuring devices to meet changes in
       requirements and capabilities.

4.2.7  The identification, preparation and maintenance of quality records, and
       reports as required by the customer.

4.2.8  An auditing system that ensures the compliance to all aspects of the
       quality system as defined in this procedure.





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                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                    PAGE 7 OF 18



4.3    CONTRACT REVIEW

       HighwayMaster shall maintain a procedure for contract review. Product
       Management shall ensure that Quality Engineering reviews customer
       contracts for the following if required:

4.3.1  Quality requirements are adequately defined and documented.

4.3.2  Any quality requirements that are different from normal quality
       specifications or requirements are resolved before the final signing of
       the contract.

4.3.3  HighwayMaster has the capability to meet the contractual quality
       requirements or is in the process of attaining those capabilities.
       Product Management shall maintain records of the contract review.

4.4    DESIGN CONTROL

       HighwayMaster design capability includes analog, digital, microprocessor
       circuitry, as well as the complete capability for printed circuit board
       and mechanical packaging design. HighwayMaster capability also includes
       software development design capabilities.

       Design Control procedures are written to ensure that design activities
       meet requirements, are planned so that qualified personnel are assigned
       to the project, and that all requirements are identified, documented,
       and reviewed. The controlling procedures for ECR is #P0001 and the
       controlling procedures for ECN is # P0002.  Software and Hardware Design
       Engineering departments control the various activity procedures
       internally.

4.5    DOCUMENT CONTROL

       All documents for HighwayMaster are reviewed and approved prior to
       issue. Appropriate documents are available at locations where they are
       intended to be used. Obsolete documents are removed from points of use
       and retained in accordance with document control procedures.

4.5.1  Controlled Documentation

4.5.1.1  Quality system documents comprises the following type documents:

4.5.1.1.1    Quality Manual


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                                                                      APPENDIX V
                                                                    PAGE 8 OF 18
 
4.5    DOCUMENT CONTROL (CONTINUED)

4.5.1.2.1    Requirements



4.5.1.2.2    Drawings
4.5.1.2.3    Engineering Change Notices
4.5.1.2.4    Manufacturing Deviations
4.5.1.2.5    Related Form

4.5.2  Document Approval

       Management initializes document changes. All documents are reviewed and
       approved prior to issue. A master file of all documents is maintained
       and is comprised of the document, revision, status, release date, change
       date and the location(s) of the documents. Documents are distributed to
       personnel and locations where they are used. When appropriate and
       relevant, documents display an approval list.

4.5.3  Document Changes

4.5.3.1  Document changes are reviewed and authorized by the Implementation
         Readiness Review (IRR) committee and Configuration Control Board (CCB)
         teams. Revised portions of documents are distributed with a change
         brief, and obsolete documents are removed. A master list specifying
         the latest issues and revisions is maintained.

4.5.3.2  A notice of change documents is released to the appropriate personnel.

4.6    PURCHASING

       HighwayMaster assesses its suppliers and subcontractors and purchases
       only from those that can satisfy the company's quality requirements.
       Purchasing documents clearly and completely describe ordered products,
       including quality requirements. Purchasing documents are approved prior
       to release.

4.6.1  Procurement

       HighwayMaster will procure materials for each program utilizing prints
       and specifications generated internally.  In the absence of these, the
       supplier's specifications shall be used. Purchasing requirements shall
       contain the necessary data to adequately describe the product being
       ordered, to include, where applicable:

4.6.1.1  A complete description of the product required





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                                                                      APPENDIX V
                                                                    PAGE 9 OF 18



4.6    PURCHASING (CONTINUED)

4.6.1.2  A listing of applicable specifications, drawing, process requirements,
         testing, inspection and/or any other technical data that is required.
         Notation of special approvals or qualifications of product,
         procedures, process or personnel.

4.6.1.3  Purchasing will verify that the material being ordered meets the
         current revision. Assumptions on revision levels will not be made
         based on previous orders.

4.6.1.4  When applicable, Quality shall review and approve purchasing documents
         for adequacy of specified requirements prior to release.

4.6.2  Approved/Qualified Vendor's List (AVL)

       Purchasing will procure components and raw materials from only those
       specified suppliers on the AVL. If additional suppliers are needed,
       Purchasing will seek approval for additional suppliers through
       Engineering, Materials Operations, Quality Assurance, and the customer.

       Purchasing will select additional suppliers on the basis of their
       ability to meet contractual requirements, including quality
       requirements. HighwayMaster shall, through Quality Engineering, survey
       additional suppliers as required using the Supplier Qualification
       Procedure. (See Supplier Performance Evaluation MOP # 401)

4.6.3  Supplier Selection and Control

       Supplier selection and control shall be the responsibility of Materials
       Operations.  The HighwayMaster Quality Department, using the
       HighwayMaster Supplier Survey form (See Supplier Performance Evaluation
       MOP # 401) will survey new suppliers. After the survey, the supplier
       will be notified of the survey results, along with any required
       corrective action, within two weeks of survey completion.

       The Quality Department will maintain ongoing records of lot acceptance
       rates (LAR) and delivery performance for each approved supplier.
       Suppliers will be surveyed annually. Product source inspections will be
       done quarterly.  (See Supplier Performance Evaluation MOP # 401)

       Failure to adequately respond to a Supplier Corrective Action Request
       may be grounds for supplier disqualification.





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                     companies except by written agreement.
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                                                                      APPENDIX V
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4.6    PURCHASING (CONTINUED)

4.6.4  Supplier Report Card

       A supplier report card shall be sent to each supplier at the end of each
       month. The report card will list monthly and Year To Date (YTD) Lot
       Acceptance Rate (LAR) and delivery performance, On Time Delivery (OTD).
       The Quality Department has responsibility for maintaining these records
       and sending the report cards.

4.6.5  Incoming Quality Assurance (IQA)

       All production component and materials will be inspected by IQA to a
       predetermined sampling plan using the relevant specifications. Where
       deemed acceptable, "Ship to Stock" procedures will be established with
       qualified suppliers. When incoming material is released for urgent
       production purposes, it shall be identified and recorded in order to
       permit recall and replacement in the event of non-conformances to
       specified requirements.

4.6.5.1  Component Inspection & Test Planning

             A dedicated inspection station shall be maintained at the
             HighwayMaster Warehouse consisting of an inspection area,
             appropriate tools, and file cabinets for drawings, procedures,
             sampling plans, and test results. This station will be under the
             control of the Quality Department.

4.6.5.2  First Article Inspection

             First Article Inspection will be performed per First Article
             procedure on all unique components (sheet metal, castings, PC
             Boards, cabled, etc.). A copy of the First Article findings will
             be placed in the Supplier history files. New revisions will be
             incorporated into the First Articles as they are released through
             the ECO procedure.

4.6.5.3  Lot Sampling And Record Keeping

             Quality inspection instruction documents will be created for each
             part, as new parts are received. These documents will detail
             administrative, mechanical, and electrical tests to be performed
             on each lot. An Acceptable Quality Level (AQL) sampling plan based
             on ANSI ASQC Z1.4 will be created for each part. Normal inspection
             levels (single sampling plan) will be used for all parts
             initially. The HighwayMaster quality engineer has the authority to
             change a plan to reduced or tightened inspection, based on quality
             history.





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                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 11 OF 18





4.6    PURCHASING (CONTINUED)

             Inspection results will be recorded on the HighwayMaster
             Inspection Summary form.

             Non-conforming material shall be tagged "reject" and segregated
             from acceptable and untested material where it will await
             dispositioning by the Material Review Board. A one hundred percent
             inspection of a rejected lot many be performed at the direction of
             the Quality Engineer in the event that material is urgently
             needed.

             Each rejected lot shall be cause for us issuance of a Supplier
             Corrective Action Request (SCAR).

4.6.5.4  Non-Conforming Material Control

             A Material Review Board (MRB) shall review and disposition all
             non-conforming and rejected procured material. The disposition
             process is documented. The MRB shall consist of representatives
             form Quality, Engineering, Purchasing, and Product Integrity. The
             quality representative will chair the board.

             The function of this board shall be the dispositioning of
             non-conforming material. The five acceptable dispositions are:

4.6.5.4.1    Return To Vendor (RTV)
4.6.5.4.2    Use As Is (USI)
4.6.5.4.3    Scrap (SCP)
4.6.5.4.4    Rework (RWK)
4.6.5.4.5    Re-Inspect (REI)

4.6.5.5  Correction Action Request

             Supplier correction action is a corrective action initiated by
             HighwayMaster to resolve customer complaints regarding defective
             product.

             If the product is found to be defective, the Quality Department
             will initiate appropriate corrective action, at the manufacturer
             of the product. The corrective action will be documented and
             maintained in the Corrective Action Log.

4.7    PURCHASER SUPPLIED PRODUCTS

     Not Applicable for HighwayMaster at this time.

4.8    PRODUCT IDENTIFICATION / TRACEABILITY

     HighwayMaster establishes and maintains procedures for marking the product
     from applicable drawings, specifications, or other documents, during
     production and delivery. Markings used for product identification include,
     but not limited to:





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                  and is not for general distribution within or
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                     companies except by written agreement.
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                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 12 OF 18



         a) labels
         b) storage bins
         c) product location

     Such information is also used to maintain identification throughout the
     production process. When tractability is a contractual requirement,
     individual products or batches have a unique identification.

4.9    PROCESS CONTROL

     HighwayMaster shall plan the production of assemblies and units so that a
     quality product is produced and the processes are carried out under
     controlled conditions.

4.9.1  Refer to subcontract manufacturer quality system.


4.9.2  Process Documentation

4.9.2.1  Manufacturing

             Documentation for manufacturing shall be provided my
             HighwayMaster's contract manufactures. Documents should include
             the following types"

                 a) Work Instructions for each assembly with set-up and
                    detailed methods interactions
                 b) Material handling specification when required
                 c) Process specifications
                 d) Process flow charts
                 e) Quality flow-charts
                 f) Product traceability
                 g) Procedure for rework and repair to assemblies and units





                       RESTRICTED PROPRIETARY INFORMATION
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                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
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                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 13 OF 18



4.10   INSPECTION AND TESTING

       Inspection and testing are conducted when purchased materials are
       received, at significant stages of production, prior to shipping stages
       of production, and prior to shipping finished product. The objective of
       inspections and testing is to verify conformance with specified
       requirements. Materials and products are prevented from being used or
       shipped until the required inspections are completed. Records of
       inspections are established and maintained as evidence that products
       comply with stated requirements.

4.10.1   HighwayMaster's contract manufacturers shall provide procedures for
         the following areas.

4.10.1.1     General
             The general requirement for inspection and testing is documented
             in the contract manufacturer's Quality Plan.

4.10.1.2     Receiving inspection and testing
             The contract manufacturer's receiving inspection and testing plan
             will be used to meet HighwayMaster requirements.

4.10.1.3     Final inspection and testing
             The contract manufacturer's final inspection and testing plan will
             be used to meet HighwayMaster requirements.

4.10.1.4     Inspection and test records
             The contract manufacturer's inspection and test records plan will
             be used to meet HighwayMaster requirements.

4.11   INSPECTION, MEASURING AND TEST EQUIPMENT

       HighwayMaster policy requires that all tools, instruments, and test
       equipment are in good repair and calibration.  Refer to subcontract
       manufacturer quality plan.

      The contract manufacturer's procedures will be used to meet HighwayMaster
      requirements for all products produced.





                       RESTRICTED PROPRIETARY INFORMATION
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                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
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                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 14 OF 18




4.12   INSPECTION AND TEST STATUS

       The inspection and test status will be identified and maintained
       throughout design, production, installation, and servicing of product.
       This is defined in documented Quality Procedures and instructions to
       ensure that only product which has passed required inspections and tests
       is ultimately shipped to customers.

4.12.1   Nonconforming material is clearly identified and segregated

4.13   CONTROL OF NON-CONFORMING PRODUCT

       Nonconforming product is identified, documented, evaluated, and
       prevented from being used or shipped.  Responsibility for disposition of
       nonconforming product is defined and, when required, the customer is
       contacted for advisement. Repaired or reworked product is reinspected.

4.13.1   Identification and Documentation

         All nonconforming product that can not be corrected using IPC Standard
         of repair or rework current revision is identified and documented.

4.13.2   Nonconforming Review and Disposition

         A Material Review Board (MRB) shall review and disposition all
         non-conforming and rejected product. The disposition process is
         documented. The MRB shall consist of representatives form Quality,
         Engineering, Purchasing, and Product Integrity. The quality
         representative will chair the board. The function of this board shall
         be the dispositioning of non-conforming product. The five acceptable
         dispositions are:

4.13.2.1     Return To Vendor (RTV)
4.13.2.2     Use As Is (USI)
4.13.2.3     Scrap (SCP)
4.13.2.4     Rework (RWK)
             Rework is subject to inspection after rework is performed
4.13.2.5     Re-Inspect (REI)





                       RESTRICTED PROPRIETARY INFORMATION
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                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   108
                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 15 OF 18



4.14   CORRECTIVE AND PREVENTIVE ACTION

       Corrective action is taken to help assure identified problems are
       quickly resolved to minimize potential quality issues and implement
       permanent solutions. Corrective actions are issued, recorded, and
       verified in accordance with documented procedures. Preventative action
       is taken to assist management in continuous improvement efforts.
       Preventative actions are also issued, recorded, and verified in
       accordance with documented procedures.

4.14.1   Everyone in the organization is responsible for instituting,
         monitoring, or requesting corrective/preventative actions. Problems
         are evaluated for potential impact on production processes, safely,
         quality, performance, reliability, or customer satisfaction. Sources
         of data and information used in evaluation may come from failure
         analysis results, manufacturing operations, or customers.

4.14.2   Problems are analyzed to determine whether immediate corrective action
         is required. Action may include production stoppage, shipping hold,
         stock purge, supplier hold, or product recall.  Once immediate control
         action has been taken, the cause is analyzed to determine required
         corrective action.  Short-term corrective actions may include customer
         notification, rework, or product screening. Long-term corrective
         actions include product redesign or production process revision.

4.14.3   After the cause of the problem has been identified, measures are also
         taken to prevent its recurrence. Nonconforming items are properly
         disposed of or corrected. The effects of these measures are audited to
         assure the desired goals are met and the permanent changes are in
         place, documented, and communicated.



4.14.4   Corrective Action Request

         Contract Manufacturer of nonconforming product are sent a corrective
         action request to verify continuous compliance of product requirements

4.14.5   Preventive actions plans will be created as needed to address longer
         term trends as represented by quality related data.





                       RESTRICTED PROPRIETARY INFORMATION
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                   for distribution outside their respective
                     companies except by written agreement.
   109
                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 16 OF 18



4.15   HANDLING, STORAGE, PACKAGING, PRESERVATION AND DELIVERY

       All material and product is handled, stored, packaged, preserved and
       delivered in a manner which prevents damage, deterioration, and
       contamination.

4.15.1   Handling

         Product handling is performed in a manner that prevents damage or
         deterioration. Personnel are instructed in proper methods of ESD
         control and general methods of handling.

4.15.2   Storage

         Defined storage areas are provided to prevent damage or deterioration
         of the product prior to use. The receipt and authorized issue of
         product from the storage area is undertaken in line with written
         procedures. Storage of product is controlled as to maintain product
         quality.

4.15.3   Packaging

         Product approved for delivery after final inspection and test has been
         conducted, is packaged in such a manner as to provide adequate
         protection from damage during storage and subsequent delivery. The use
         and configuration of packaging materials is defined in written
         specifications or in accordance with customer requirements.  Packaged
         product is suitably identified and the marking controlled.

4.15.4   Delivery

         Product is afforded adequate protection after final inspection and
         test. Where contractually specified, this protection is extended to
         include delivery to destination.

4.16   QUALITY RECORDS

4.16.1   Control requirements

4.16.1.1     The Quality Engineering ensures that the records required in the
             operation of the Quality Management System are properly
             maintained.

4.16.1.2     Quality records are maintained to demonstrate achievement of the
             required quality and the effectiveness of the Quality Management
             System.

4.16.1.3     All quality records are legible and identifiable to the product or
             process





                       RESTRICTED PROPRIETARY INFORMATION
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            employees of the parties and their affiliates hereto only
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                   for distribution outside their respective
                     companies except by written agreement.
   110
                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 17 OF 18




4.16   QUALITY RECORDS (CONTINUED)

             concerned. They may be in the form of any type of media including
             electronic form. Quality records are stored and maintained in such
             manner as to provide for ready access. Storage facilities are
             selected to minimize deterioration or damage and prevent loss.

4.16.1.4     Regulatory Agency records, and Vendor supplied records related to
             the quality of purchased goods shall be part of this system.

4.17   INTERNAL QUALITY AUDITS

4.17.1   The compliance and effectiveness of the Quality System is verified by
         conducting internal quality audits on a regular basis. The results of
         these audits are used by management to identify the state of the
         Quality System.

4.17.2   Internal quality audits are performed by trained auditors who are
         independent of the product, process or system that is audited. Audits
         are planned and performed in accordance with documented procedures.

4.17.3   Records of all audits are maintained and reviewed with the responsible
         management personnel.

4.17.4   Nonconformance identified during the audit process will be issued
         corrective actions. These will be discussed and issued during the
         management review. Corrective action follow-up will be performed in
         accordance with documented procedures.

4.18   TRAINING

4.18.1   All personnel will have the necessary level of experience or training
         to enable them to undertake designated tasks competently. In-house
         training and certification, where specified, is provided. Where
         necessary, external training resources and facilities will be
         utilized.

4.18.2   Training records are maintained in accordance with documented
         procedures.  Records are maintained for all training carried out on
         all employees, including internal, external, and on-the- job, courses
         attended, and the qualification, and certificates received.





                       RESTRICTED PROPRIETARY INFORMATION
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            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   111
                                                            AGREEMENT NO. 980427
                                                                      APPENDIX V
                                                                   PAGE 18 OF 18



4.19   SERVICING

       Where servicing is a contractually specified requirement, the company
       draws up a quality plan in consultation with the client to control this
       activity. Documented procedures for performing, verifying and reporting
       that serving meets specified requirements are established as servicing
       activities are agree to.

4.20   STATISTICAL TECHNIQUES

4.20.1   Identification of Need

    4.20.1.1     HighwayMaster's subcontractors will establish policy and
             direction for Statistical Process Control implementation and
             maintenance. Management may consist of: Directors of Manufacturing
             or Engineering, Quality Assurance Director or their designee.

4.20.1.2     Statistical Control Techniques will be used throughout the
             manufacturing process as a method of determining material, product
             and process quality. An examination of the opportunity for
             Statistical Control Techniques will be performed as new processes
             are developed. Refer to subcontract manufacturer quality plan.

4.20.2   Procedures

4.20.2.1     Guidelines for the implementation of Statistical Control
             Techniques are defined and documented at HighwayMaster's
             subcontractors. Identification of statistical techniques that may
             be used, the basis for selecting each method used as well as a
             component for identifying when to use the method to verify
             customers needs will be defined.





                       RESTRICTED PROPRIETARY INFORMATION
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            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   112
                                                            Agreement No. 980427
                                                                       Exhibit A
                                                                     Page 1 of 3





================================================================================
                                 PRIME SUPPLIER
                         MBE/WBE/DVBE PARTICIPATION PLAN
================================================================================
                                                                             
PRIME SUPPLIER NAME:
                    ------------------------------------------------------------
ADDRESS:
        ------------------------------------------------------------------------
TELEPHONE NUMBER:
                 ---------------------------------------------------------------
DESCRIBE GOODS OR SERVICES BEING PROVIDED UNDER THIS AGREEMENT:

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

DESCRIBE YOUR M/WBE-DVBE OR SUPPLIER DIVERSITY PROGRAM AND THE PERSONNEL
DEDICATED TO THAT PROGRAM:

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

THE FOLLOWING, TOGETHER WITH ANY ATTACHMENTS IS SUBMITTED AS AN MBE/WBE/DVBE
PARTICIPATION PLAN.

1.       GOALS

         A.       WHAT ARE YOUR MBE/WBE/DVBE PARTICIPATION GOALS?

                  o  MINORITY BUSINESS ENTERPRISES (MBES)              %
                                                                 ------
                  o  WOMEN BUSINESS ENTERPRISES (WBES)                 %
                                                                 ------
                  o  DISABLED VETERANS BUSINESS                        
                     ENTERPRISES (DVBES)                               %
                                                                 ------

         B.       WHAT IS THE ESTIMATED ANNUAL VALUE OF THIS CONTRACT WITH
                  PACIFIC BELL? ______________
                  SOUTHWESTERN BELL TELEPHONE COMPANY ("SBC")? ______________
                  OTHER SBC AFFILIATE? ______________
                  NOTE: INDICATE DOLLAR AWARD(S) AS IT APPLIES TO THIS CONTRACT
                  (I.E., PACIFIC BELL, SBC AND/OR AFFILIATE).

         C.       WHAT ARE THE DOLLAR AMOUNTS OF YOUR PROJECTED MBE/WBE/DVBE
                  PURCHASES?





                       RESTRICTED PROPRIETARY INFORMATION
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            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   113
                                                            Agreement No. 980427
                                                                       Exhibit A
                                                                     Page 2 of 3





                 o  MINORITY BUSINESS ENTERPRISES (MBES)      
                                                                 --------
                 o  WOMEN BUSINESS ENTERPRISES (WBES)         
                                                                 --------
                 o  DISABLED VETERANS BUSINESS                
                    ENTERPRISES (DVBES)                          
                                                                 --------

*SEE MBE/WBE/DVBE CANCELLATION CLAUSE IN AGREEMENT FOR DEFINITIONS OF MBE, WBE,
AND DVBE*

2.       LIST THE PRINCIPAL GOODS AND/OR SERVICES TO BE SUBCONTRACTED TO
         MBE/WBE/DVBES OR DELIVERED THROUGH MBE/WBE/DVBE VALUE ADDED RESELLERS.


- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------

            DETAILED PLAN FOR USE OF M/WBES-DVBES AS SUBCONTRACTORS,
                      DISTRIBUTORS, VALUE ADDED RESELLERS

FOR EVERY PRODUCT AND SERVICE YOU INTEND TO USE, PROVIDE THE FOLLOWING
INFORMATION: (ATTACH ADDITIONAL SHEETS IF NECESSARY)



       COMPANY NAME               CLASSIFICATION      PRODUCTS/SERVICES         $ VALUE         DATE TO BEGIN
                                  (MBE/WBE/DVBE)       TO BE PROVIDED
       ------------               --------------      -----------------         -------         -------------
                                                                                       

- ----------------------------------------------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------

- ----------------------------------------------------------------------------------------------------------------




                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   114
                                                            Agreement No. 980427
                                                                       Exhibit A
                                                                     Page 3 of 3





3.       SELLER AGREES THAT IT WILL MAINTAIN ALL NECESSARY DOCUMENTS AND
         RECORDS TO SUPPORT ITS EFFORTS TO ACHIEVE ITS MBE/WBE/DVBE
         PARTICIPATION GOAL(S).  SELLER ALSO ACKNOWLEDGES THE FACT THAT
         IT IS RESPONSIBLE FOR IDENTIFYING, SOLICITING AND QUALIFYING
         MBE/WBE/DVBE SUBCONTRACTORS, DISTRIBUTORS AND VALUE ADDED
         RESELLERS.

4.       THE FOLLOWING INDIVIDUAL, ACTING IN THE CAPACITY OF MBE/WBE/DVBE
         COORDINATOR FOR SELLER, WILL: 
         o     ADMINISTER THE MBE/WBE/DVBE PARTICIPATION PLAN, 
         o     SUBMIT SUMMARY REPORTS, AND 

         o     COOPERATE IN ANY STUDIES OR SURVEYS AS MAY BE REQUIRED IN ORDER 
               TO DETERMINE THE EXTENT OF COMPLIANCE BY THE SELLER WITH THE 
               PARTICIPATION PLAN.

         NAME: (PRINTED) 
                         -------------------------------------------------------
         TITLE:
               -----------------------------------------------------------------
         TELEPHONE NUMBER: 
                          ------------------------------------------------------
         AUTHORIZED SIGNATURE:
                              --------------------------------------------------
         DATE:
              ------------------------------------------------------------------





                       RESTRICTED PROPRIETARY INFORMATION
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            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   115
                                                            Agreement No. 980427
                                                                       Exhibit B
                                                                     Page 1 of 2





              EXHIBIT B - PARTICIPATION PLANS AND RESULTS REPORTS

PRIME CONTRACTOR NAME:
ADDRESS:
TELEPHONE NUMBER:
RFQ/RFB/RFP/RFI NUMBER (IF APPLICABLE):   NA
                                          --
DESCRIPTION OF GOODS OR SERVICES:


DEFINITION: A COMMODITY (OR COMMERCIAL) PRODUCT IS DEFINED BY THE REGULATIONS AS
            ONE IN REGULAR PRODUCTION THAT IS SOLD IN SUBSTANTIAL QUANTITIES TO 
            THE GENERAL PUBLIC AND/OR INDUSTRY AT REGULAR PRICES.

IF A COMPANY IS OFFERING A COMMODITY PRODUCT, THEN THE SUBCONTRACTING PLAN MAY
RELATE TO THE COMPANY'S GENERAL PRODUCTION OF BOTH COMMERCIAL AND NON-COMMERCIAL
PRODUCTS, RATHER THAN JUST SPECIFIC ITEMS BEING PROCURED UNDER THE CONTRACT.

THE FOLLOWING, TOGETHER WITH ANY ATTACHMENTS IS SUBMITTED AS AN MBE/WBE/DVBE
SUBCONTRACTING PLAN.

1.   DO YOU PLAN TO SUBCONTRACT ANY PORTION OF THE GOODS OR SERVICES BEING
     QUOTED, BID OR PROPOSED?
                                    YES      NO

2.   IF ANSWER TO ITEM 1 IS YES,

     A.   WHAT IS YOUR OVERALL COMPANY MBE/WBE/DVBE PROGRAM GOAL:

         o   MINORITY BUSINESS ENTERPRISES (MBES)                           0%
         o   WOMEN BUSINESS ENTERPRISES (WBES)                              0%
         o   DISABLED VETERANS BUSINESS ENTERPRISES (DVBES)                 0%

     B.   WHAT IS YOUR PROJECTED MBE/WBE/DVBE PURCHASES:

         o   MINORITY BUSINESS ENTERPRISES (MBES)                           0%
         o   WOMEN BUSINESS ENTERPRISES (WBES)                              0%
         o   DISABLED VETERANS BUSINESS ENTERPRISES (DVBES)                 0%

*    SEE MBE/WBE/DVBE CANCELLATION CLAUSE IN AGREEMENT FOR DEFINITIONS OF MBE,
     WBE, AND DVBE*

3.   IF ANSWER TO ITEM 1 IS NO, OR IF NO MBE/WBE/DVBE SUBCONTRACTORS WILL BE
     UTILIZED WHERE SUBCONTRACTING HAS BEEN IDENTIFIED, PLEASE EXPLAIN IN
     DETAIL: (ATTACH ADDITIONAL SHEETS IF NECESSARY)

      NA





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            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.
   116
                                                            Agreement No. 980427
                                                                       Exhibit B
                                                                     Page 2 of 2




    
4.   LIST THE PRINCIPAL GOODS AND/OR SERVICES TO BE SUBCONTRACTED TO
     MBE/WBE/DVBES, SHOULD YOUR QUOTATION, BID OR PROPOSAL BE ACCEPTED: (ATTACH
     ADDITIONAL SHEETS IF NECESSARY)



5.   DESCRIBE WHAT GOOD FAITH EFFORTS YOU PLAN TO UNDERTAKE TO ENSURE THAT
     MBE/WBE/DVBES WILL HAVE AN EQUITABLE OPPORTUNITY TO COMPETE FOR
     SUBCONTRACTS TO BE AWARDED: (ATTACH ADDITIONAL SHEETS IF NECESSARY)



6.   THE CONTRACTOR AGREES THAT IT WILL MAINTAIN, IF AWARDED THE RESULTING
     CONTRACT/PURCHASE OR WORK ORDER, ALL NECESSARY DOCUMENTS AND RECORDS TO
     SUPPORT ITS EFFORTS TO ACHIEVE ITS ESTIMATED MBE/WBE/DVBE SUBCONTRACTING
     GOAL(S). CONTRACTOR ALSO ACKNOWLEDGES THE FACT THAT IT WILL BE RESPONSIBLE
     FOR IDENTIFYING, SOLICITING AND QUALIFYING MBE/WBE/DVBE SUBCONTRACTORS.



7.   THE FOLLOWING INDIVIDUAL, ACTING IN THE CAPACITY OF MBE/WBE/DVBE
     COORDINATOR FOR CONTRACTOR, WILL:

    o    ADMINISTER THE MBE/WBE/DVBE SUBCONTRACTING PLAN,
    o    SUBMIT SUMMARY REPORTS, AND
    o    COOPERATE IN ANY STUDIES OR SURVEYS AS MAY BE REQUIRED BY SWBT IN ORDER
         TO DETERMINE THE EXTENT OF COMPLIANCE BY ATC WITH THE SUBCONTRACTING
         PLAN.


    NAME:
    TITLE:
    TELEPHONE NUMBER:
    AUTHORIZED SIGNATURE:
    TYPED/PRINTED NAME:
    TITLE:
    DATE:




                       RESTRICTED PROPRIETARY INFORMATION
            The information contained herein is for use by authorized
            employees of the parties and their affiliates hereto only
                  and is not for general distribution within or
                   for distribution outside their respective
                     companies except by written agreement.