ACE COMM CORP
S-1, 1996-06-25
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<PAGE>
     AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JUNE 25, 1996
 
                                                      REGISTRATION NO. 333-
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                           --------------------------
 
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                              ACE*COMM CORPORATION
             (Exact name of registrant as specified in its charter)
                           --------------------------
 
<TABLE>
<S>                              <C>                           <C>
           MARYLAND                          3669                 52-1283030
 (State or other jurisdiction    (Primary Standard Industrial  (I.R.S. Employer
      of incorporation or        Classification Code Number)    Identification
         organization)                                               No.)
</TABLE>
 
                           --------------------------
 
                               209 PERRY PARKWAY
                          GAITHERSBURG, MARYLAND 20877
                                 (301) 258-9850
              (Address, including zip code, and telephone number,
       including area code, of registrant's principal executive offices)
                           --------------------------
 
                               GEORGE T. JIMENEZ
                                   PRESIDENT
                              ACE*COMM CORPORATION
                               209 PERRY PARKWAY
                          GAITHERSBURG, MARYLAND 20877
                                 (301) 258-9850
           (Name, Address and Telephone Number of Agent for Service)
                           --------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                            <C>
             Ariel Vannier, Esq.                           Melvin Epstein, Esq.
      Venable, Baetjer and Howard, LLP                   Stroock & Stroock & Lavan
   1800 Mercantile Bank and Trust Building                 Seven Hanover Square
              Two Hopkins Plaza                        New York, New York 10004-2696
       Baltimore, Maryland 21201-2978                         (212) 806-5400
               (410) 244-7400
</TABLE>
 
                           --------------------------
 
        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
            AS SOON AS PRACTICABLE AFTER THE EFFECTIVE DATE HEREOF.
 
    If  any of the securities being registered on this form are to be offered on
a delayed or continuous basis pursuant to  Rule 415 under the Securities Act  of
1933, check the following box. / /
 
    If  this Form  is filed  to register  additional securities  for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list  the  Securities  Act  registration statement  number  of  the  earlier
effective registration statement for the same offering. / / __________
    If  this Form  is a post-effective  amendment filed pursuant  to Rule 462(c)
under the Securities Act,  check the following box  and list the Securities  Act
registration statement number of the earlier registration statement for the same
offering. / / __________
    If  delivery of the prospectus is expected  to be made pursuant to Rule 434,
please check the following box. / /
                           --------------------------
 
                        CALCULATION OF REGISTRATION FEE
 
<TABLE>
<CAPTION>
                                                                            PROPOSED MAXIMUM
                                                          PROPOSED MAXIMUM     AGGREGATE
TITLE OF EACH CLASS OF SECURITIES      AMOUNT TO BE        OFFERING PRICE       OFFERING         AMOUNT OF
        TO BE REGISTERED                REGISTERED          PER SHARE(1)        PRICE(1)      REGISTRATION FEE
<S>                                <C>                    <C>               <C>               <C>
Common Stock, $.01 par value.....   2,895,933 Shares(2)        $11.00         $31,855,263        $10,984.66
</TABLE>
 
(1) Estimated solely for purposes of calculating the registration fee.
(2) Includes 377,730 shares  which the Underwriters have  the right to  purchase
    from the Company solely to cover over-allotments, if any.
 
    THE  REGISTRANT HEREBY  AMENDS THIS REGISTRATION  STATEMENT ON  SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL
FILE A  FURTHER  AMENDMENT  WHICH SPECIFICALLY  STATES  THAT  THIS  REGISTRATION
STATEMENT  SHALL THEREAFTER BECOME EFFECTIVE IN  ACCORDANCE WITH SECTION 8(A) OF
THE SECURITIES ACT  OF 1933  OR UNTIL  THE REGISTRATION  STATEMENT SHALL  BECOME
EFFECTIVE  ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(A),
MAY DETERMINE.
<PAGE>
                              ACE*COMM CORPORATION
CROSS REFERENCE SHEET SHOWING LOCATION IN PROSPECTUS OF INFORMATION REQUIRED BY
                          ITEMS IN PART I OF FORM S-1
 
<TABLE>
<CAPTION>
FORM S-1 ITEM AND CAPTION                                                        LOCATION IN PROSPECTUS
- ----------------------------------------------------------------  -----------------------------------------------------
 
<C>        <S>                                                    <C>
PART I
 
       1.  Front of Registration Statement and Outside Front
            Cover of Prospectus.................................  Cover of Prospectus
       2.  Inside Front and Outside Back Cover Pages of
            Prospectus..........................................  Inside Front and Outside Back Cover Page of
                                                                   Prospectus
       3.  Summary Information, Risk Factors and Ratio of
            Earnings to Fixed Charges...........................  Prospectus Summary; Risk Factors
       4.  Use of Proceeds......................................  Use of Proceeds
       5.  Determination of Offering Price......................  Underwriting
       6.  Dilution.............................................  Dilution
       7.  Selling Security Holders.............................  Principal and Selling Stockholders
       8.  Plan of Distribution.................................  Underwriting
       9.  Description of Securities to be Registered...........  Description of Capital Stock
      10.  Interest of Named Experts and Counsel................  Not Applicable
      11.  Information With Respect to the Registrant...........  Front Cover Page; Prospectus Summary; Risk Factors;
                                                                   Use of Proceeds; Dividend Policy; Capitalization;
                                                                   Dilution; Selected Financial Data; Management's
                                                                   Discussion and Analysis of Financial Condition and
                                                                   Results of Operations; Business; Management; Certain
                                                                   Transactions; Principal and Selling Stockholders;
                                                                   Description of Capital Stock; Shares Eligible for
                                                                   Future Sale; Financial Statements
      12.  Disclosure of Commission Position on Indemnification
            for Securities Act Liabilities......................  Not Applicable
</TABLE>
<PAGE>
INFORMATION   CONTAINED  HEREIN  IS  SUBJECT   TO  COMPLETION  OR  AMENDMENT.  A
REGISTRATION STATEMENT  RELATING TO  THESE SECURITIES  HAS BEEN  FILED WITH  THE
SECURITIES  AND EXCHANGE  COMMISSION. THESE SECURITIES  MAY NOT BE  SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR  TO THE TIME THE REGISTRATION STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE AN  OFFER  TO  SELL  OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN  ANY STATE IN WHICH SUCH OFFER,  SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.
<PAGE>
                   SUBJECT TO COMPLETION, DATED JUNE 25, 1996
 
PROSPECTUS
                                2,518,203 SHARES
 
                              ACE*COMM CORPORATION
 
                                  COMMON STOCK
                             ---------------------
 
    Of the 2,518,203 shares of Common  Stock, $.01 par value per share  ("Common
Stock"),  of ACE*COMM Corporation ("ACE*COMM" or the "Company"), offered hereby,
2,250,000 shares are being offered by  the Company and 268,203 shares are  being
offered  by  a  stockholder  of the  Company  (the  "Selling  Stockholder"). See
"Principal and Selling Stockholders."  The Company will not  receive any of  the
proceeds  from the  sale of  shares by  the Selling  Stockholder. Prior  to this
offering, there has been no public market  for the Common Stock of the  Company.
It is currently estimated that the initial public offering price will be between
$9  and $11 per share.  See "Underwriting." The Company  has applied to have the
Common Stock listed on the Nasdaq National Market under the symbol "ACEC."
                            ------------------------
 
  FOR A DISCUSSION OF CERTAIN FACTORS THAT SHOULD BE CONSIDERED BY PROSPECTIVE
  PURCHASERS OF THE SECURITIES OFFERED HEREBY, SEE "RISK FACTORS" BEGINNING AT
                                    PAGE 8.
                             ---------------------
 
THESE SECURITIES HAVE NOT  BEEN APPROVED OR DISAPPROVED  BY THE SECURITIES  AND
 EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
  AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
     ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRE-   SENTATION TO THE
                        CONTRARY IS A CRIMINAL OFFENSE.
 
<TABLE>
<CAPTION>
                                                       UNDERWRITING                          PROCEEDS TO THE
                                                      DISCOUNTS AND      PROCEEDS TO THE         SELLING
                                 PRICE TO PUBLIC      COMMISSIONS(1)        COMPANY(2)         STOCKHOLDER
<S>                             <C>                 <C>                 <C>                 <C>
Per Share.....................          $                   $                   $                   $
Total (3).....................          $                   $                   $                   $
</TABLE>
 
(1) The Company and the Selling Stockholder have agreed to indemnify the several
    Underwriters  against certain  liabilities, including  liabilities under the
    Securities Act of 1933, as amended. See "Underwriting."
 
(2) Before deduction of expenses payable by the Company estimated at $750,000.
 
(3) The Company has granted to the  Underwriters a 30-day option to purchase  up
    to  377,730  additional  shares  of  Common Stock,  on  the  same  terms and
    conditions as set forth above, solely  to cover over-allotments, if any.  If
    such  option is exercised  in full, the total  Price to Public, Underwriting
    Discounts and  Commissions, Proceeds  to  the Company  and Proceeds  to  the
    Selling  Stockholder will be  $            , $            , $            and
    $         , respectively. See "Underwriting."
 
    The shares are being offered by  the several Underwriters, subject to  prior
sale,  when,  as, and  if delivered  to  and accepted  by the  Underwriters, and
subject to various  prior conditions, including  the right to  reject orders  in
whole  or in part.  It is expected  that delivery of  share certificates will be
made against payment therefor at the offices of Furman Selz LLC in New York, New
York, on or about             , 1996.
 
FURMAN SELZ
                            OPPENHEIMER & CO., INC.
                                                          RODMAN & RENSHAW, INC.
                                ---------------
 
               The date of this Prospectus is             , 1996.
<PAGE>
    The inside  front cover  page contains  a map  of the  world indicating  the
number of installations of the Company's products and the countries in which the
Company's products have been installed.
 
    In  addition, the inside front  cover folds open to  reveal two pages, which
contain brief descriptions of the Company's carrier network products and network
management products and  depict where  such products  fit within  an end  user's
network.
 
                            ------------------------
 
    IN  CONNECTION WITH THIS OFFERING, THE UNDERWRITERS MAY OVER-ALLOT OR EFFECT
TRANSACTIONS WHICH STABILIZE OR MAINTAIN THE MARKET PRICE OF THE COMMON STOCK AT
A LEVEL  ABOVE THAT  WHICH MIGHT  OTHERWISE  PREVAIL IN  THE OPEN  MARKET.  SUCH
TRANSACTIONS   MAY  BE   EFFECTED  ON  THE   NASDAQ  NATIONAL   MARKET,  IN  THE
OVER-THE-COUNTER MARKET OR  OTHERWISE. SUCH  STABILIZING, IF  COMMENCED, MAY  BE
DISCONTINUED AT ANY TIME.
 
                                       2
<PAGE>
                               PROSPECTUS SUMMARY
 
    THE FOLLOWING SUMMARY IS QUALIFIED IN ITS ENTIRETY BY, AND SHOULD BE READ IN
CONJUNCTION  WITH, THE  MORE DETAILED  INFORMATION AND  FINANCIAL STATEMENTS AND
RELATED  NOTES  THERETO  APPEARING  ELSEWHERE  IN  THIS  PROSPECTUS.  EXCEPT  AS
OTHERWISE  INDICATED, ALL INFORMATION IN THIS PROSPECTUS ASSUMES (I) NO EXERCISE
OF THE UNDERWRITERS' OVER-ALLOTMENT  OPTION, (II) THE  EFFECT OF A  5.42-FOR-ONE
STOCK  SPLIT OF THE COMPANY'S COMMON STOCK TO BE EFFECTED IN THE FORM OF A STOCK
DIVIDEND PRIOR  TO THE  DATE OF  THIS PROSPECTUS,  (III) THE  REDEMPTION OF  ALL
OUTSTANDING  SHARES  OF  THE COMPANY'S  CLASS  B  PREFERRED STOCK  AND  (IV) THE
CONVERSION OF  ALL  OUTSTANDING SHARES  OF  THE COMPANY'S  CLASS  C  CONVERTIBLE
PREFERRED  STOCK (THE "CLASS C PREFERRED STOCK") INTO 1,843,944 SHARES OF COMMON
STOCK, WHICH WILL OCCUR AUTOMATICALLY UPON THE COMPLETION OF THIS OFFERING.  THE
COMPANY  CONSIDERS TELECOMMUNICATIONS SERVICE PROVIDERS  TO CONSIST GENERALLY OF
BOTH CARRIERS  OPERATING VOICE  AND DATA  NETWORKS FOR  THEIR CUSTOMERS  AND  OF
ENTERPRISES  WHICH OPERATE  VOICE AND DATA  NETWORKS FOR THEIR  OWN USE. CERTAIN
TECHNICAL TERMS  AND  ACRONYMS  USED  IN THIS  PROSPECTUS  ARE  DEFINED  IN  THE
"GLOSSARY OF TERMS" BEGINNING ON PAGE 55.
 
                                  THE COMPANY
 
    ACE*COMM  Corporation ("ACE*COMM"  or the  "Company") develops,  markets and
services operations support  systems ("OSS") products  for networks deployed  by
telecommunications  service providers, such as telephone companies, other public
carriers and large enterprises operating data and voice networks using intranets
and the Internet. The Company's products perform such functions as billing  data
collection,  network surveillance,  alarm processing and  network management for
some of the largest carriers and enterprises in the world.
 
    Increasing worldwide demand for data, voice and video services has created a
need for  increased network  capacity  and new  network services.  In  addition,
telecommunications   service   providers   face   an   increasingly  competitive
environment due  to  continued  deregulation and  privatization  of  the  global
telecommunications  industry. In  response to  these developments, interexchange
and local exchange carriers and  providers of Internet, personal  communications
and cellular services are offering a wide range of network features and options.
As  a result of the growth in  network usage and new services, large enterprises
require timely, accurate  information regarding network  performance and  system
usage  to support the increasing volumes of data and voice communications to and
from employees, customers  and suppliers. ACE*COMM's  solutions are designed  to
enable  carriers and large enterprises  to optimize the use  of new and existing
communications networks.
 
    The  Company's  carrier  network   products  connect  to  existing   network
infrastructures  and  enable carriers  to  rapidly and  accurately  collect call
records and  performance  data which  are  used for  billing,  fraud  detection,
customer  care, marketing research and forecasting, and other operations support
functions. These  products are  designed to  enhance the  carriers'  competitive
position  by allowing them to offer  new features and services, minimize network
down-time, increase revenue through more accurate and timely billing and improve
network productivity.  The  Company  believes  that it  is  well  positioned  to
continue  to  offer  its  carrier network  products  to  international customers
located, for  example, in  Europe, Asia  and the  Pacific Rim,  which  typically
operate  a wide variety  of switches from different  manufacturers and require a
data collection system capable of adapting  to and integrating with the  billing
system and other OSSs.
 
    Leveraging  its  experience  in  developing  carrier  network  products, the
Company has  also produced  network management  products that  meet the  growing
needs of large enterprises in the United States and abroad, including government
agencies,  military organizations,  educational institutions  and "Fortune 1000"
size organizations. As these enterprises  have become increasingly dependent  on
the  Internet and intranets for voice  and data communications, their demand for
reliable and  flexible network  management tools  has increased.  The  Company's
network  management products consist of standardized software-based systems that
enable network managers to  manage voice and  data communications by  automating
service  administration, tracking  network connections,  detecting system errors
and malfunctions, controlling network  inventory assignments and  configuration,
monitoring
 
                                       3
<PAGE>
traffic  and  performing  billing functions.  The  Company's  network management
products are designed to increase the efficiency of communication operations and
incorporate  recent  developments  in  object-oriented  development,   real-time
response, client server architecture and graphical user interfaces.
 
    The   Company  is  well  positioned  to  develop  products  to  support  the
convergence and growth of telephony and data networks within the enterprise,  as
a  result of its knowledge and experience  in data control and network switching
technology, data capture and warehousing, and client-server systems. The Company
presently is  partnering with  Newbridge Networks  Corporation ("Newbridge")  to
develop  software designed to  provide billing data  collection capabilities for
asynchronous transfer  mode ("ATM"),  Frame  Relay and  X.25 switch  users.  The
Company   anticipates  similar  opportunities  to  develop  other  network  edge
technologies for equipment and service providers in the data services market.
 
    The Company has  established strategic alliances  with several companies  in
order  to distribute its  products effectively and develop  products that can be
responsive to the  needs of  the Company's  end users.  The Company's  principal
strategic  partners are  AT&T Corporation, Cincinnati  Bell Information Systems,
Inc. ("CBIS"),  Teleglobe Canada,  Inc. ("Teleglobe"),  International  Computers
Limited  ("ICL"), Lucent Technologies, Inc.,  GTE Government Systems Corporation
("GTE  Government   Systems")  and   BellSouth  Communication   Services,   Inc.
("BellSouth").  These relationships  have resulted  in the  sale of  products to
domestic and overseas carriers,  the U.S. Armed Forces,  the U.S. Department  of
State  and  major airports,  among others.  The  alliances have  been especially
helpful in enabling the Company to further penetrate, on a cost-effective basis,
the  international  telecommunications  carrier  markets,  where  the  Company's
alliance   partners  are  well  recognized   and  have  well-developed  business
relationships. The  Company  also sells  directly  to large  customers  such  as
Telefonos de Mexico S.A. de C.V. ("TELMEX"), NYNEX and the University of Iowa.
 
    The  Company's carrier network products have  been installed in over 500 end
user sites  in  32 countries  and  its  network management  products  have  been
installed  in over 100 end user sites in 10 countries. The Company believes that
these installations constitute one of the  largest installed bases in the  world
for  billing mediation and network  management systems in the telecommunications
service provider market. The Company's telecommunication carrier products can be
tailored to the needs of operating  companies in both the wireline and  wireless
sectors,  as well as end  users, regardless of the  geographical location of the
switches.  The  Company's  network  management  products  are  compatible   with
virtually all standard network management platforms.
 
    The Company was incorporated in the State of Maryland in 1983. Its principal
executive  offices  are located  at  209 Perry  Parkway,  Gaithersburg, Maryland
20877, and its  telephone number is  (301) 258-9850. The  Company's site on  the
World Wide Web is located at http://www.acec.com.
 
                                       4
<PAGE>
                                  THE OFFERING
 
<TABLE>
<S>                                    <C>
Common Stock offered by:
  The Company........................  2,250,000 shares
  The Selling Stockholder............  268,203 shares
Common Stock to be outstanding after
the offering.........................  8,418,442 shares(1)
Use of Proceeds to the Company.......  For  general  corporate  purposes,  including working
                                       capital, the employment of additional personnel,  the
                                       repayment  of  bank indebtedness,  the  redemption of
                                       Class B Preferred Stock and the repayment of  certain
                                       indebtedness  held by the holder of such stock and by
                                       a related party. See "Use of Proceeds."
Proposed Nasdaq National Market
symbol...............................  ACEC
</TABLE>
 
- ------------------------
(1) Excludes  1,293,217  shares  of  Common  Stock  issuable  upon  exercise  of
    outstanding options.
 
                                  RISK FACTORS
 
    For a discussion of certain factors that should be considered by prospective
purchasers of the securities offered hereby, see "Risk Factors."
 
                                       5
<PAGE>
                             SUMMARY FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                             NINE MONTHS ENDED
                                             FISCAL YEAR ENDED JUNE 30,          MARCH 31,
                                           -------------------------------  --------------------
                                             1993       1994       1995       1995       1996
                                           ---------  ---------  ---------  ---------  ---------
<S>                                        <C>        <C>        <C>        <C>        <C>
STATEMENT OF OPERATIONS DATA:
Revenue -- products and services.........  $  11,137  $  14,523  $  12,415  $   9,238  $  13,111
Costs and operating expenses:
  Cost of products and services..........      5,870      7,675      6,579      4,758      6,672
  Selling, general and administrative....      4,065      5,473      6,049      4,675      4,744
  Research and development...............        780        573      1,045        712        631
                                           ---------  ---------  ---------  ---------  ---------
(Loss) income from operations............        422        802     (1,258)      (907)     1,064
Interest expense, net....................        (53)      (156)      (335)      (229)      (285)
                                           ---------  ---------  ---------  ---------  ---------
(Loss) income before income taxes and
 extraordinary item......................        369        646     (1,593)    (1,136)       779
Income taxes.............................       (151)    --         --         --         --
                                           ---------  ---------  ---------  ---------  ---------
(Loss) income before extraordinary
 item....................................        218        646     (1,593)    (1,136)       779
Extraordinary item -- tax benefit of net
 operating loss carryforwards............        151     --         --         --         --
                                           ---------  ---------  ---------  ---------  ---------
Net (loss) income........................  $     369  $     646  $  (1,593) $  (1,136) $     779
                                           ---------  ---------  ---------  ---------  ---------
                                           ---------  ---------  ---------  ---------  ---------
Pro forma net (loss) income per
 share (1)...............................                        $   (0.26)            $    0.12
                                                                 ---------             ---------
                                                                 ---------             ---------
Shares used to compute pro forma net
 (loss) income per share (1).............                        6,200,992             6,510,335
                                                                 ---------             ---------
                                                                 ---------             ---------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                       QUARTERS ENDED
                                       -------------------------------------------------------------------------------
                                        SEPT. 30,   DEC. 31,   MAR. 31,   JUNE 30,    SEPT. 30,   DEC. 31,   MAR. 31,
                                          1994        1994       1995       1995        1995        1995       1996
                                       -----------  ---------  ---------  ---------  -----------  ---------  ---------
<S>                                    <C>          <C>        <C>        <C>        <C>          <C>        <C>
STATEMENT OF OPERATIONS DATA:
Revenue -- products and services.....   $   2,879   $   3,552  $   2,807  $   3,177   $   3,433   $   4,772  $   4,906
Costs and operating expenses:
  Cost of products and services......       1,485       2,027      1,246      1,821       1,736       2,736      2,200
  Selling, general and
   administrative....................       1,505       1,576      1,594      1,374       1,362       1,610      1,772
  Research and development...........         218         268        226        333         132         235        264
                                       -----------  ---------  ---------  ---------  -----------  ---------  ---------
(Loss) income from operations........        (329)       (319)      (259)      (351)        203         191        670
Interest expense, net................         (53)        (74)      (102)      (106)       (104)        (97)       (84)
                                       -----------  ---------  ---------  ---------  -----------  ---------  ---------
(Loss) income before income taxes....        (382)       (393)      (361)      (457)         99          94        586
Income taxes.........................      --          --         --         --          --          --         --
                                       -----------  ---------  ---------  ---------  -----------  ---------  ---------
Net (loss) income....................   $    (382)  $    (393) $    (361) $    (457)  $      99   $      94  $     586
                                       -----------  ---------  ---------  ---------  -----------  ---------  ---------
                                       -----------  ---------  ---------  ---------  -----------  ---------  ---------
</TABLE>
 
- ------------------------
(1) For  a description  of the  computation of pro  forma net  (loss) income per
    share and shares used  in computing pro forma  net (loss) income per  share,
    see  Note 1 to the Company's financial statements included elsewhere in this
    Prospectus.
 
                                       6
<PAGE>
 
<TABLE>
<CAPTION>
                                                                        MARCH 31, 1996
                                                                   ------------------------
                                                                                    AS
                                                                    ACTUAL(1)   ADJUSTED(2)
                                                                   -----------  -----------
BALANCE SHEET DATA:
<S>                                                                <C>          <C>
Cash.............................................................   $       2    $  16,520
Working capital (deficit)........................................       2,588       19,228
Total assets.....................................................       8,861       25,379
Total liabilities................................................       7,167        3,819
Stockholders' equity.............................................       1,694       21,560
</TABLE>
 
- ------------------------
(1) Gives effect  to  the  conversion  of all  outstanding  shares  of  Class  C
    Preferred Stock into 1,843,944 shares of Common Stock.
 
(2) Adjusted  to reflect the sale of 2,250,000 shares of Common Stock offered by
    the Company  hereby at  an initial  offering  price of  $10 per  share  (the
    mid-point of the estimated range of the initial public offering price) after
    deducting  underwriting  discounts  and commissions  and  estimated offering
    expenses payable by the  Company, and the application  of the estimated  net
    proceeds  therefrom, including the repayment of certain indebtedness and the
    redemption of shares of Class B  Preferred Stock. See "Use of Proceeds"  and
    "Capitalization."
 
BACKLOG
 
    The  following  table  sets forth,  on  the dates  indicated,  the Company's
backlog by backlog type. See "Management's Discussion and Analysis of  Financial
Condition and Results of Operations -- Overview" and "Business -- Backlog."
 
<TABLE>
<CAPTION>
                                                                JUNE 30,                   MARCH 31,
                                                     -------------------------------  --------------------
                                                       1993       1994       1995       1995       1996
                                                     ---------  ---------  ---------  ---------  ---------
Order Backlog......................................  $   3,723  $   5,656  $   3,606  $   5,478  $  11,362
<S>                                                  <C>        <C>        <C>        <C>        <C>
Contract Backlog...................................      1,500      2,600      1,005        830     38,231
</TABLE>
 
                                       7
<PAGE>
                                  RISK FACTORS
 
    AN  INVESTMENT IN THE COMMON STOCK OFFERED  HEREBY INVOLVES A HIGH DEGREE OF
RISK. THE  FOLLOWING  FACTORS  AND CAUTIONARY  STATEMENTS  SHOULD  BE  CAREFULLY
CONSIDERED IN EVALUATING THE COMPANY AND ITS BUSINESS.
 
    RELIANCE  ON  SIGNIFICANT CUSTOMERS  AND  LARGE ORDERS;  LONG  SALES CYCLES;
FLUCTUATIONS IN RESULTS. A  significant portion of  the Company's revenues  have
been,  and will continue to be, derived  from substantial orders placed by large
organizations. For the nine months ended  March 31, 1996, TELMEX and  Teleglobe,
its  largest  carrier  network  product customers  for  the  period, represented
approximately 24.5% and 13.2% of  total revenue, respectively, and ANSTEC,  Inc.
("ANSTEC")  and GTE Government  Systems, its largest  network management product
customers for  the period,  represented approximately  10.7% and  7.1% of  total
revenue,  respectively. The Company expects that  in the future it will continue
to be dependent upon  a limited number  of customers in any  given period for  a
significant portion of its revenue. Furthermore, such customers are concentrated
in  the  carrier  market.  The  Company's future  success  may  depend  upon the
continued demand  by such  customers  for its  products and  services.  Customer
demand  can be affected by numerous variables, including changes in governmental
regulation, changes in the customers' competitive environment, pricing  policies
by  the Company or its competitors,  personnel changes, demand for the Company's
products in this market, the number, timing and significance of new product  and
product  enhancement  announcements  by  the Company  and  its  competitors, the
ability of  the  Company to  develop,  introduce  and market  new  and  enhanced
versions  of its products on a timely basis,  and the mix of direct and indirect
sales and general economic factors. There can be no assurance that revenue  from
customers  that  have  accounted  for  significant  revenues  in  past  periods,
individually or as a group, will continue, or if continued will reach or  exceed
historical  levels in any future period. The Company's results of operations and
financial condition could  be materially  adversely affected by  the failure  of
anticipated orders to materialize and by deferrals or cancellation of orders.
 
    The  Company's revenue is difficult to forecast as a result of the fact that
the purchase  of operations  support and  network management  systems  generally
involves  a significant commitment of  capital and management time. Accordingly,
the sales cycle associated with the  purchase of the Company's products --  from
initial  contact to contract  execution and delivery of  product -- typically is
lengthy, varies from customer  to customer and from  project to project, and  is
subject  to  a  number  of additional  significant  risks,  including customers'
budgetary constraints and  internal acceptance reviews,  over which the  Company
has little or no control.
 
    The  Company's results also vary based on  the type and quantity of products
shipped, the timing of  product shipments, the relative  revenue mix in a  given
period and the resulting margins. The variations may be material.
 
    As  a result of these  and other factors, the  Company believes that revenue
and operating results, and  particularly quarterly results,  are likely to  vary
significantly   in  the  future  and  to  be  difficult  to  forecast  and  that
period-to-period comparisons of  its results of  operations are not  necessarily
meaningful  and should not be relied  upon as indications of future performance.
In  addition,  the  Company's  expense  levels  are  based,  in  part,  on   its
expectations   as  to  future  revenue  levels.  If  revenue  levels  are  below
expectations in any given period, operating results are likely to be  materially
adversely  affected.  Further,  it is  likely  that  in some  future  period the
Company's revenue or operating results will be below the expectations of  public
market analysts and investors. In such event, the price of the Common Stock will
be  materially adversely affected. See  "Management's Discussion and Analysis of
Financial Condition and Results of Operations -- Selected Quarterly Results" and
"Business -- Strategic Alliances and Other Customers."
 
    RELIANCE ON TELECOMMUNICATIONS SERVICE PROVIDER MARKET.  The Company derived
substantially all  of  its  revenue from  sales  to  telecommunications  service
providers  during the twelve  months ended June  30, 1994 and  1995 and the nine
months ended March 31,  1996. Sales to  the telecommunications service  provider
market are expected to provide the substantial majority of the Company's revenue
in
 
                                       8
<PAGE>
the  foreseeable future. The Company's business  is dependent upon the continued
growth  of   the  telecommunications   industry  in   the  United   States   and
internationally,  on the continued convergence of voice and data networks and on
the evolution  and widespread  adoption of  emerging network  technologies.  Any
decline  in the growth of the industry, the failure of these markets to converge
or the failure  of these network  technologies to evolve  or achieve  widespread
market  acceptance could have a  material adverse effect on  the Company and its
results of operations.
 
    The telecommunications industry  is subject to  extensive regulation in  the
United  States and  other countries and  regulatory approvals  generally must be
obtained by most of the Company's customers. The enactment by federal, state  or
foreign  governments of new laws or regulations or changes in the interpretation
of existing regulations could adversely affect the Company's customers.
 
    Any  adverse  development  in  the  carrier  or  telecommunications  market,
including  reregulation, or  reduction in demand  for the  Company's products by
these industry sectors, could  have a material adverse  effect on the  financial
condition and results of operations of the Company.
 
    RISKS  ASSOCIATED WITH  INTERNATIONAL OPERATIONS.   Sales of  products to be
delivered outside of the United States accounted for approximately 37.1%,  62.9%
and  68.6% of the Company's total revenue for  the years ended June 30, 1994 and
1995 and for  the nine months  ended March 31,  1996, respectively. The  Company
expects that revenue from the sale of products outside of the United States will
continue  to account for  a significant portion  of its total  revenue in future
periods. The Company intends  to enter additional  international markets and  to
continue  to expand its operations outside of the United States by expanding its
direct sales  force, opening  additional in-region  customer support  and  sales
offices,  adding licensees  and distributors  and pursuing  additional strategic
relationships. Market acceptance of the Company's products for emerging markets,
such as Asia and the Pacific Rim, is important to the Company's future  success,
but  these markets  are diverse  and rapidly  evolving, and  it is  difficult to
predict their  potential  size,  future  growth rate  or  the  timing  of  their
development. In addition, access to international markets is often difficult due
to  the  established  relationships  between a  government  owned  or controlled
communications   company   and   its   traditional   indigenous   suppliers   of
communications  products.  Accordingly,  there  can  be  no  assurance  that the
Company's products will  be widely accepted  by the service  providers in  these
emerging markets or that the Company will be able to continue to penetrate these
markets effectively.
 
    The  proposed  further  expansion into  international  markets  will require
significant  management  attention  and  expenditure  of  significant  financial
resources  and  could  adversely  affect the  Company's  operating  margins. The
Company's international  operations and  revenue involve  a number  of  inherent
risks,  including extensive field testing and  a lengthier sales cycle than with
domestic customers, longer receivables collection periods and greater collection
difficulty, difficulty in  staffing and managing  international operations,  the
impact  of possible  recessionary environments  in economies  outside the United
States, unexpected changes in regulatory  requirements, including a slowdown  in
the  rate  of privatization  of  carriers, reduced  protection  for intellectual
property rights in some  countries and tariffs and  other trade barriers.  There
can be no assurance that the Company will be able to sustain or increase revenue
derived  from international sales or that the  foregoing factors will not have a
material adverse  effect on  the Company's  future international  revenue,  and,
consequently, on the Company's results of operations and financial condition.
 
    Currency  exchange fluctuations in countries in  which the Company sells its
products could  have a  material  adverse effect  on  the Company's  results  of
operations  and  financial  condition  by  resulting  in  pricing  that  is  not
competitive with  products priced  in local  currencies. In  addition, sales  in
Europe  and certain other parts of the world typically are adversely affected in
the third quarter of each calendar year as many customers reduce their  business
activities during the summer months. If the Company's international sales become
a  greater component of  total revenue, these  seasonal factors may  have a more
pronounced  effect  on  the  Company's  operating  results.  See   "Management's
Discussion  and  Analysis of  Financial  Condition and  Results  of Operations,"
"Business --  Sales  and  Marketing"  and  "--  Strategic  Alliances  and  Other
Customers."
 
                                       9
<PAGE>
    DEPENDENCE  ON THIRD  PARTY RELATIONSHIPS.   A key element  of the Company's
business strategy is to develop strategic alliances with leading companies  that
provide  telecommunications  services  or that  manufacture  and  market network
equipment, in order to expand the Company's distribution channels and enter  new
markets.  There can be no assurance that the Company will be able to continue to
increase the number of, or to expand  these types of relationships, in order  to
market  its  products  effectively, particularly  internationally.  Many  of the
Company's strategic alliances are nonexclusive and certain of the companies with
which the  Company  has  such  alliances  also  have  agreements  with,  or  are
themselves,  competitors or  potential competitors  of the  Company. The Company
believes that these alliances  are critical to the  Company's ability to  expand
its penetration of international markets for its carrier network products and to
increase  sales of its  network management products in  the United States. There
can be no assurance that the  Company's strategic partners will not  discontinue
one  or more of  their alliances with  the Company or  form additional competing
arrangements with competitors of the Company or themselves begin to compete with
the Company. See "Business -- Strategic Alliances and Other Customers."
 
    DEPENDENCE ON KEY PERSONNEL.  The Company's success depends to a significant
degree upon the continuing contributions of its key management, sales,  customer
support  and product development personnel. In  particular, the Company would be
materially adversely affected if it were to lose the services of George Jimenez,
Joseph Dorr or  Thomas Russotto,  who have provided  significant leadership  and
direction  to the Company since its inception and who have significant knowledge
of the Company's proprietary technology and products. The Company currently does
not have employment agreements with its key personnel, although the Company  has
non-competition and non-disclosure agreements with each of them. The Company has
obtained key man life insurance on the life of Mr. Jimenez in the amount of $1.0
million,  payable  to  the Company.  The  loss  of key  management  or technical
personnel could  have a  material adverse  effect on  the Company's  results  of
operations and financial condition.
 
    INTENSE  COMPETITION.  The market for carrier network and network management
products is highly competitive. Many providers offer products that are  directly
competitive with those offered by the Company in both domestic and international
markets.   The  Company  also  experiences  competition  from  in-house  systems
developed by existing and potential customers. Many of the Company's current and
potential  competitors   have   significantly  greater   financial,   marketing,
technical,  and  other  competitive  resources  than  the  Company.  Current and
potential competitors, including providers  of software or processing  services,
may  establish cooperative relationships with one  another or with third parties
or consolidate  to compete  more effectively  against the  Company. It  is  also
possible  that new competitors may emerge and acquire market share. Any of these
events could  have  a  material  adverse effect  on  the  Company's  results  of
operations and financial condition. See "Business -- Competition."
 
    NEW PRODUCTS AND TECHNOLOGY AND NEED TO RESPOND TO RAPIDLY CHANGING CUSTOMER
NEEDS.   The market for the Company's  products is characterized by rapid change
and is highly competitive with respect to the need for timely product innovation
and new  product introductions.  The Company  believes that  its future  success
depends  in part upon its  ability to enhance its  current offerings and develop
new products  that  address the  increasingly  complex needs  of  customers.  In
particular,  the Company  believes that  it must  respond quickly  to customers'
needs for additional functionality and  new software technologies. There can  be
no  assurance that the  Company will be  able to do  so. The Company continually
seeks to develop new products and individual features within a complex  hardware
and  software system.  Development projects  can be  lengthy and  are subject to
changing requirements, programming  difficulties, and  unforeseen factors  which
can result in delays. In addition, new products or features, when first released
by  the  Company, may  contain undetected  errors that,  despite testing  by the
Company, are discovered  only after  a product has  been installed  and used  by
customers.  Delays or undetected errors could  have a material adverse effect on
the Company's results of operations and financial condition.
 
                                       10
<PAGE>
    The introduction  or announcement  by the  Company  or one  or more  of  its
competitors  of  products embodying  new  technologies, or  changes  in industry
standards or customer requirements, could render the Company's existing products
obsolete or unmarketable. The  introduction of new or  enhanced versions of  its
products  also requires the Company to manage the transition from older products
in order  to  minimize  disruption  in customer  operations.  There  can  be  no
assurance that the introduction or announcement by the Company or one or more of
its  competitors of new  products, or changes in  industry standards or customer
requirements, will not cause  customers to limit or  defer purchases of  Company
products.  Such actions  could have a  material adverse effect  on the Company's
results of operations and financial condition.
 
    MANAGEMENT OF GROWTH.  The Company is expanding into new products,  services
and  markets. This growth has resulted in new and increased responsibilities for
management personnel and has placed and continues to place a significant  strain
upon  the Company's management,  operating and financial  systems and resources.
Although the  Company believes  that there  are currently  no existing  material
weaknesses, in order to accommodate recent growth and to compete effectively and
manage  future  growth, if  any, the  Company  will be  required to  continue to
implement and improve operating,  financial and management information  systems,
procedures  and controls on a timely basis and  in such a manner as is necessary
to accommodate  the  increased number  of  transactions and  customers  and  the
increased size of the Company's operations. Management of future growth, if any,
will  also require  that the  Company continuously  expand, train,  motivate and
manage its work force. These demands will require the addition of new management
personnel. The Company's future success will  depend to a significant extent  on
the ability of its current and future executive officers to operate effectively,
both  independently and as a group. There can be no assurance that the Company's
personnel, systems,  procedures and  controls will  be adequate  to support  the
Company's  existing and future operations. Any  failure to implement and improve
the Company's operating, financial and  management systems or to expand,  train,
motivate  or  manage  employees could  have  a  material adverse  effect  on the
Company's results of operations and financial condition.
 
    DIFFICULTY IN ATTRACTING AND RETAINING NECESSARY PERSONNEL.  Certain members
of the senior management team of the Company have been in place for a relatively
short time. James Moore, Vice President, Marketing, began his employment in  May
1996.  The Company believes  that its future  success will depend  in large part
upon its ability to  continue to attract and  retain highly skilled  managerial,
sales,   professional  services,   customer  support   and  product  development
personnel. The  Company has  at times  experienced and  continues to  experience
difficulty   in  recruiting  qualified   personnel.  Competition  for  qualified
personnel with  knowledge of  the telecommunications  industry is  intense,  and
there  can be no assurance that the Company will be successful in attracting and
retaining such personnel.  The complex nature  of the products  demanded by  the
Company's  customers requires that  the Company recruit  and hire personnel with
expertise in  and a  broad  understanding of  the telecommunications  and  other
industries in which the Company's customers compete. In addition, there are only
a  limited number of  qualified development and  customer support engineers, and
competition for such individuals is especially intense. Competitors have in  the
past  and may in the future attempt  to recruit the Company's employees. Failure
to attract and retain key personnel could have a material adverse effect on  the
Company's results of operations and financial condition.
 
    DEPENDENCE  UPON PROPRIETARY TECHNOLOGY.   The Company's success and ability
to compete is  dependent in part  upon its proprietary  technology. The  Company
relies  on  a  combination  of  trade  secret,  copyright  and  trademark  laws,
nondisclosure and other contractual agreements and technical measures to protect
its  proprietary  rights.  The  Company  currently  has  no  patents  or  patent
applications  pending. Despite the Company's  efforts to protect its proprietary
rights, unauthorized  parties  may attempt  to  copy aspects  of  the  Company's
products  or  to  obtain  and  use  information  that  the  Company  regards  as
proprietary, or to develop  products with functionality  or features similar  to
the  Company's products  that are  substantially equivalent  or superior  to the
Company's products. In addition, effective copyright, trademark and trade secret
protection may  be unavailable  or  limited in  certain countries.  The  Company
believes   that  its   products  and  trademarks   do  not   infringe  upon  the
 
                                       11
<PAGE>
proprietary rights of third  parties, but there can  be no assurance that  third
parties  will  not  in  the  future  assert  claims  of  infringement  of  their
proprietary  rights.  Any  such  claims,   with  or  without  merit,  could   be
time-consuming,  result in costly  litigation, cause product  shipment delays or
require the Company to develop  non-infringing technology or enter into  royalty
or  licensing agreements which, if available, may  not be on terms acceptable to
the Company. A claim of product infringement against the Company and failure  or
inability  of the Company  to develop non-infringing  technology, or license the
infringed or similar  technology, could have  a material adverse  effect on  the
Company's  results of operations and financial  condition. The Company relies on
certain software that it licenses from third parties, including software that is
integrated with internally developed software and used in the Company's products
to perform  key functions.  There can  be no  assurance that  these third  party
software  licenses will continue to be  available to the Company on commercially
reasonable terms. The absence of such software, if the Company is unable to find
a substitute, could have a material  adverse effect on the Company's ability  to
produce products. See "Business -- Proprietary Rights and Licenses."
 
    NO PRIOR PUBLIC MARKET; DETERMINATION OF OFFERING PRICE; POSSIBLE VOLATILITY
OF STOCK PRICE.  Prior to this offering, there has been no public market for the
Company's  Common Stock. There can be no assurance that an active trading market
will develop for the Common  Stock or that the price  at which shares of  Common
Stock  may  trade in  the public  market from  time to  time subsequent  to this
offering will  exceed the  initial  public offering  price. The  initial  public
offering  price will be  determined by negotiations between  the Company and the
representatives of the Underwriters and may  not be indicative of future  market
prices.  See  "Underwriting" for  a discussion  of factors  to be  considered in
determining the initial public offering price. The stock market has from time to
time experienced  extreme price  and volume  fluctuations, particularly  in  the
technology  sector, which often have been unrelated to the operating performance
of particular  companies.  Any announcement  with  respect to  any  variance  in
revenue  or earnings from levels generally expected by securities analysts for a
given period could have an immediate and significant effect on the trading price
of the Common Stock. In addition, factors such as announcements of technological
innovations or new products by the  Company, its competitors, or third  parties,
as  well as changing market  conditions in the industry,  may have a significant
impact on the market price of the Common Stock.
 
    SHARES ELIGIBLE FOR FUTURE SALE.  Sales of a substantial number of shares of
Common Stock in the public market following this offering could adversely affect
prevailing market prices for the Common Stock. Upon the expiration of  "lock-up"
agreements,  180  days  following  the date  of  this  Prospectus, approximately
5,635,634 shares of Common  Stock will be  eligible for sale  under Rule 701  or
Rule 144 under the Securities Act of 1933, as amended (the "Securities Act"). On
the date 90 days following the date of this Prospectus and without consideration
of the foregoing contractual restrictions, substantially all of the Common Stock
outstanding  prior to  this offering  will be  eligible for  sale in  the public
markets subject to the provisions of  Rule 144. After this offering, holders  of
1,575,740  shares of  Common Stock are  entitled to  certain registration rights
(taking into account  the conversion of  the Class C  Preferred Stock). If  such
holders, by exercising their registration rights, cause a large number of shares
to  be registered and sold in the public  market, such sales may have an adverse
effect on  the market  price for  the  Common Stock.  In addition,  the  Company
intends  to  register  on  one  or  more  registration  statements  filed  after
completion of this offering, up to 1,500,000 shares of Common Stock reserved for
issuance under  the  Company's  plans.  Shares  covered  by  these  registration
statements  will be eligible for sale in the public market immediately after the
effective dates of such registration statements. See "Shares Eligible for Future
Sale" and "Underwriting."
 
    CONTROL BY EXISTING STOCKHOLDERS;  ANTI-TAKEOVER PROVISIONS.  The  Company's
directors and officers and their affiliates will, in the aggregate, beneficially
own  more than 49.7% of  the outstanding Common Stock  after this offering. As a
result, these stockholders, if they act together, would be able to control  most
matters requiring approval by the Company's stockholders, including the election
of  directors.  In  addition, the  Company's  Charter and  By-laws  will contain
provisions that  may discourage  acquisition  bids for  the Company  by  persons
unrelated to certain existing stockholders. The effect
 
                                       12
<PAGE>
of  this stock  ownership and these  provisions may  be to limit  the price that
investors might be willing to pay in  the future for shares of the Common  Stock
or  prevent  or delay  a merger,  takeover, or  other change  in control  of the
Company and thus discourage attempts to acquire the Company. See "Principal  and
Selling  Stockholders" and "Shares  Eligible for Future  Sale." In addition, the
Company's Board of Directors has the  authority to issue up to 5,000,000  shares
of  Preferred  Stock  and  to  determine  the  price,  rights,  preferences  and
privileges  of  those  shares  without  any  further  vote  or  action  by   the
stockholders.  The rights of the holders of Common Stock will be subject to, and
may be adversely affected by, the rights  of the holders of any Preferred  Stock
that  may  be issued  in  the future.  The  issuance of  Preferred  Stock, while
providing  flexibility  in  connection  with  possible  acquisitions  and  other
corporate  purposes, could  have the  effect of making  it more  difficult for a
third party  to  acquire a  majority  of the  outstanding  voting stock  of  the
Company. The Company has no present plan to issue any shares of Preferred Stock.
The  Company's  Charter and  By-laws contain  other  provisions, such  as notice
requirements for stockholders, staggered terms  for its Board of Directors,  and
limitations  on  the stockholders'  ability to  remove  directors or  to present
proposals to the  stockholders for a  vote, all  of which may  have the  further
effect  of making  it more  difficult for a  third party  to gain  control or to
acquire the Company. See "Description of Capital Stock" and "Certain Charter and
By-law Provisions."
 
    DILUTION.  The initial  public offering price  will be substantially  higher
than  the  book value  per share  of  Common Stock.  Assuming an  initial public
offering price of $10.00 per share (the mid-point of the estimated range of  the
initial  public offering price),  investors participating in  this offering will
incur immediate, substantial dilution of  approximately $7.41 per share. To  the
extent outstanding options to purchase the Company's Common Stock are exercised,
there will be further dilution. See "Dilution."
 
                                       13
<PAGE>
                                USE OF PROCEEDS
 
    The  net proceeds to the Company from the sale of the shares of Common Stock
offered hereby are  estimated to be  approximately $20.2 million  (approximately
$24.0  million if the Underwriters' over-allotment option is exercised in full),
after  deducting  the  underwriting  discounts  and  commissions  and  estimated
offering expenses and assuming a public offering price of $10.00 per share.
 
    The  Company expects to use the  net proceeds for general corporate purposes
including working capital and employment of additional personnel, provided that:
(i) certain amounts  will be used  for repayment of  bank indebtedness of  which
approximately $3.2 million was outstanding at March 31, 1996, (ii) approximately
$0.4  million will be used  for redemption of all  outstanding shares of Class B
Preferred Stock and the repayment of certain indebtedness held by the holder  of
such  shares, of which approximately $52,000  was outstanding at March 31, 1996,
and (iii) approximately $0.1 million will  be used for repayment of  outstanding
related-party  indebtedness. See Note  13 to the  Company's financial statements
and "Certain Transactions" for further information.
 
    The principal purposes of this offering are to increase the Company's equity
and to  create a  public market  for  the Company's  Common Stock.  The  Company
believes  that success in its industry  requires substantial capital in order to
maintain the flexibility to take advantage of opportunities that arise and to be
able to withstand adverse  business conditions, should  they occur. Portions  of
net  proceeds may also be used to fund acquisitions of complementary businesses,
products or technologies, although no specific acquisitions are planned or under
negotiation as of the date of this  Prospectus. The Company has not allocated  a
significant  portion of the net proceeds of this offering to any particular use.
Accordingly, management will  have significant flexibility  in applying the  net
proceeds  of this  offering. Pending  application of  the proceeds  as described
above, the  Company intends  to  invest the  net proceeds  in  investment-grade,
short-term securities.
 
    The  Company will not receive any of the proceeds from the sale of shares of
Common  Stock  by   the  Selling   Stockholder.  See   "Principal  and   Selling
Stockholders."
 
                                DIVIDEND POLICY
 
    The  Company has never declared or paid  cash dividends on the Common Stock.
The Company currently intends to retain earnings, if any, to finance the  growth
and development of its business and does not anticipate paying cash dividends in
the  foreseeable  future.  The terms  of  the Company's  bank  credit facilities
prohibit the  payment  of  cash  dividends.  See  "Management's  Discussion  and
Analysis  of  Financial Condition  and Results  of  Operations --  Liquidity and
Capital Resources." The future payment of cash dividends, if any, is also within
the discretion of the Board of Directors and will depend on the future earnings,
capital requirements, financial  condition and future  prospects of the  Company
and such other factors as the Board of Directors may deem relevant.
 
                                       14
<PAGE>
                                 CAPITALIZATION
 
    The following table sets forth the capitalization of the Company as of March
31,  1996,  (i) giving  effect to  a  5.42-to-one stock  split and  assuming the
conversion of all outstanding Class C Preferred Stock into Common Stock and (ii)
as adjusted to reflect the sale of  2,250,000 shares of Common Stock offered  by
the  Company hereby  (at an  assumed initial  public offering  price of  $10 per
share), and the application  of the estimated net  proceeds of this offering  as
described  in "Use of Proceeds."  This table should be  read in conjunction with
the Company's financial statements and notes thereto included elsewhere in  this
Prospectus.
 
<TABLE>
<CAPTION>
                                                                                                 MARCH 31, 1996
                                                                                              --------------------
                                                                                                            AS
                                                                                               ACTUAL    ADJUSTED
                                                                                              ---------  ---------
                                                                                              (IN THOUSANDS EXCEPT
                                                                                                FOR SHARE DATA)
<S>                                                                                           <C>        <C>
Long-term debt, net of current portion......................................................  $   3,228     --
                                                                                              ---------
Stockholders' equity: (1)
  Class B Preferred Stock, $1.00 par value; 1,000 shares authorized, 1,000 issued and
   outstanding, actual; none issued and outstanding, as adjusted............................          1     --
  Common Stock, $.01 par value; 45,000,000 shares authorized, 6,074,937 issued and
   outstanding, actual; 45,000,000 shares authorized, 8,324,937 issued and outstanding, as
   adjusted.................................................................................         61  $      83
Additional paid-in capital..................................................................      2,557     22,402
Stock subscriptions receivable..............................................................       (114)      (114)
Accumulated deficit.........................................................................       (811)      (811)
                                                                                              ---------  ---------
    Total stockholders' equity..............................................................      1,694     21,560
                                                                                              ---------  ---------
      Total capitalization..................................................................  $   4,957  $  21,560
                                                                                              ---------  ---------
                                                                                              ---------  ---------
</TABLE>
 
- ------------------------
 
(1)  Excludes options to  purchase 1,130,617 shares of  Common Stock at exercise
    prices ranging from  $.34 to  $.69 per share,  outstanding as  of March  31,
    1996.
 
                                       15
<PAGE>
                                    DILUTION
 
    The  pro forma net tangible  book value of the Company  as of March 31, 1996
was $1.7 million, or  $.28 per share  of Common Stock.  "Pro forma net  tangible
book  value" per share represents the amount of total tangible assets less total
liabilities, divided  by  the  total  number of  shares  of  Common  Stock  then
outstanding  (without giving effect to this  offering but assuming the automatic
conversion of all outstanding shares of  Class C Preferred Stock into  1,843,944
shares of Common Stock and the effectiveness of a 5.42-to-one stock split).
 
    After  giving effect to the  sale by the Company  of the 2,250,000 shares of
Common Stock offered  by the Company  and the application  of the estimated  net
proceeds  of this offering as described in "Use of Proceeds" (after deduction of
underwriting discounts  and commissions  and estimated  offering expenses),  the
Company's  pro forma net tangible book value  at March 31, 1996, would have been
$21.6 million, or $2.59 per share of Common Stock to purchasers of Common  Stock
in  this offering. This represents  an immediate dilution of  $7.41 per share to
new investors. The following table illustrates the per share dilution:
 
<TABLE>
<S>                                                                   <C>        <C>
Assumed initial public offering price per share.....................             $   10.00
  Pro forma net tangible book value per share at March 31, 1996.....  $    0.28
  Increase in pro forma net tangible book value per share
   attributable to new investors....................................       2.31
                                                                      ---------
Pro forma net tangible book value per share after this offering.....                  2.59
                                                                                 ---------
Dilution per share to new investors.................................             $    7.41
                                                                                 ---------
                                                                                 ---------
</TABLE>
 
    The following table summarizes, on a pro  forma basis as of March 31,  1996,
the  number of  shares of  Common Stock  purchased from  the Company,  the total
consideration paid  and  the  average  price per  share  paid  by  the  existing
stockholders and by purchasers of Common Stock in this offering:
 
<TABLE>
<CAPTION>
                                                        SHARES PURCHASED          TOTAL CONSIDERATION        AVERAGE
                                                    ------------------------  ---------------------------   PRICE PER
                                                      NUMBER       PERCENT      AMOUNT(2)       PERCENT       SHARE
                                                    -----------  -----------  --------------  -----------  -----------
<S>                                                 <C>          <C>          <C>             <C>          <C>
Existing Stockholders (1).........................    6,074,937       73.0%   $    2,544,209       10.2%    $    0.42
New Investors (1).................................    2,250,000       27.0        22,500,000       89.8     $   10.00
                                                    -----------      -----    --------------      -----
    Total.........................................    8,324,937      100.0%   $   25,044,209      100.0%
                                                    -----------      -----    --------------      -----
                                                    -----------      -----    --------------      -----
</TABLE>
 
- ------------------------
(1)  The sale by the Selling Stockholder in this offering will reduce the number
    of shares of  Common Stock held  by existing stockholders  to 5,806,734,  or
    approximately  69.8%  (5,806,734  shares,  or  approximately  66.7%,  if the
    Underwriters' over-allotment option is exercised in full), and will increase
    the number of shares  held by new investors  to 2,518,203, or  approximately
    30.2%  (2,895,933  shares,  or  approximately  33.3%,  if  the Underwriters'
    over-allotment option is exercised in full),  of the total number of  shares
    of  Common Stock outstanding after this offering. See "Principal and Selling
    Stockholders."
 
(2) The consideration received  from existing stockholders  for the purchase  of
    their  shares includes notes in the  aggregate principal amount at March 31,
    1996 of $113,663.
 
                                       16
<PAGE>
                            SELECTED FINANCIAL DATA
 
    The following table sets forth for the periods indicated selected  financial
data for the Company. The statement of operations and balance sheet data for the
years  ended June 30, 1993,  1994 and 1995 have  been derived from the Company's
financial  statements,  which  have  been  audited  by  Price  Waterhouse   LLP,
independent  accountants. The statement of operations and balance sheet data for
the years ended  June 30, 1991  and 1992  have been derived  from the  Company's
audited  financial statements which  have not been  included in this Prospectus.
Management believes that the unaudited interim financial statements for the nine
months ended March 31, 1995 and 1996 reflect all adjustments, consisting only of
normal recurring adjustments, necessary for a fair presentation of the financial
data for such periods. Results of operations for the nine months ended March 31,
1996 are not necessarily indicative of the results to be expected for the entire
year. The information set forth below  is qualified by reference to, and  should
be  read in conjunction  with, the Company's financial  statements and the notes
thereto and "Management's  Discussion and  Analysis of  Financial Condition  and
Results of Operations" included elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                                                                       NINE MONTHS
                                                        FISCAL YEAR ENDED JUNE 30,                   ENDED MARCH 31,
                                          ------------------------------------------------------  ---------------------
                                            1991       1992       1993       1994        1995       1995        1996
                                          ---------  ---------  ---------  ---------  ----------  ---------  ----------
                                                              (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                       <C>        <C>        <C>        <C>        <C>         <C>        <C>
STATEMENT OF OPERATIONS DATA:
Revenue -- products and services........  $   5,545  $   7,877  $  11,137  $  14,523  $   12,415  $   9,238  $   13,111
Costs and operating expenses:
  Cost of products and services.........      4,181      4,462      5,870      7,675       6,579      4,758       6,672
  Selling, general and administrative...      2,259      3,098      4,065      5,473       6,049      4,675       4,744
  Research and development..............         50        218        780        573       1,045        712         631
                                          ---------  ---------  ---------  ---------  ----------  ---------  ----------
(Loss) income from operations...........       (945)        99        422        802      (1,258)      (907)      1,064
Interest expense, net...................       (136)       (56)       (53)      (156)       (335)      (229)       (285)
                                          ---------  ---------  ---------  ---------  ----------  ---------  ----------
(Loss) income before income taxes and
 extraordinary item.....................     (1,081)        43        369        646      (1,593)    (1,136)        779
Income taxes............................         --        (21)      (151)        --          --         --          --
                                          ---------  ---------  ---------  ---------  ----------  ---------  ----------
(Loss) income before extraordinary
 item...................................     (1,081)        22        218        646      (1,593)    (1,136)        779
Extraordinary item -- tax benefit of net
 operating loss carryforwards...........         --         21        151         --          --         --          --
                                          ---------  ---------  ---------  ---------  ----------  ---------  ----------
Net (loss) income.......................  $  (1,081) $      43  $     369  $     646  $   (1,593) $  (1,136) $      779
                                          ---------  ---------  ---------  ---------  ----------  ---------  ----------
                                          ---------  ---------  ---------  ---------  ----------  ---------  ----------
Pro forma net (loss) income per shares
 (1)....................................                                              $    (0.26)            $     0.12
                                                                                      ----------             ----------
                                                                                      ----------             ----------
Number of shares used in computing pro
 forma net (loss) income per share......                                               6,200,992              6,510,335
                                                                                      ----------             ----------
                                                                                      ----------             ----------
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                JUNE 30,
                                                          -----------------------------------------------------   MARCH 31,
                                                            1991       1992       1993       1994       1995        1996
                                                          ---------  ---------  ---------  ---------  ---------  -----------
                                                                                    (IN THOUSANDS)
<S>                                                       <C>        <C>        <C>        <C>        <C>        <C>
BALANCE SHEET DATA:
Cash....................................................  $      80  $      52  $      62  $     147  $     190   $       2
Working capital (deficit)...............................     (1,511)       117        519        590     (1,374)      2,588
Total assets............................................      2,980      4,645      6,582      7,407      8,293       8,861
Total liabilities.......................................      3,231      3,195      4,763      4,943      7,414       7,167
Mandatorily redeemable preferred stock..................         --      1,749      1,842      1,982      2,122       2,227
Stockholders' (deficit) equity..........................       (251)      (299)       (23)       483     (1,242)       (533)
</TABLE>
 
- ------------------------------
 
(1)  For a  description of the  computation of  pro forma net  (loss) income per
    share and shares used  in computing pro forma  net (loss) income per  share,
    see  Note  1 of  the notes  to the  Company's financial  statements included
    elsewhere in this Prospectus.
 
BACKLOG
 
    The following  table  sets forth,  on  the dates  indicated,  the  Company's
backlog  by backlog type. See "Management's Discussion and Analysis of Financial
Condition and Results of Operations -- Overview" and "Business -- Backlog."
 
<TABLE>
<CAPTION>
                                                                    JUNE 30,                   MARCH 31,
                                                         -------------------------------  --------------------
                                                           1993       1994       1995       1995       1996
                                                         ---------  ---------  ---------  ---------  ---------
<S>                                                      <C>        <C>        <C>        <C>        <C>
Order Backlog..........................................  $   3,723  $   5,656  $   3,606  $   5,478  $  11,362
Contract Backlog.......................................      1,500      2,600      1,005        830     38,231
</TABLE>
 
                                       17
<PAGE>
                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
OVERVIEW
 
    The  Company sells carrier network products and network management products,
both through direct channels  and through its  strategic alliance partners,  for
delivery in the United States and internationally. Since June 1994, the Company,
consistent with its strategic emphasis, has derived most of its revenue from the
sale  of its  carrier network  products. The Company  expects the  sales of such
products to  increase as  a percentage  of its  revenue for  at least  the  next
several  years. The balance of the Company's revenue is derived from the sale of
network management products to enterprise  customers, including agencies of  the
U.S. Government.
 
    The  Company has generated growth in its  revenue in every fiscal year since
fiscal 1986 except  for fiscal  1995. In  fiscal 1995,  the Company  experienced
simultaneous  delays in  three large  contract awards  due to  internal customer
matters unrelated to  the Company and  beyond its control.  The delays caused  a
decline  in the Company's revenue, without  any offsetting reduction in expenses
because of the need to retain  key personnel, maintain fixed overhead costs  and
incur  substantial sales and marketing expenses associated with trying to obtain
the delayed contracts. Two of these delayed contracts, one awarded by NYNEX  and
one by the U.S. Air Force, were finally awarded late in fiscal 1995 and early in
fiscal  1996, with the Company realizing  revenue from these contracts in fiscal
1996.
 
    The Company's products  typically are sold  pursuant to long-term  contracts
having  an  aggregate  contract value  of  several hundred  thousand  to several
million dollars. As part of the contract, the Company agrees to provide  certain
services,  including postcontract  customer support, assistance  to customers in
the development and installation of new systems, maintenance and enhancement  of
installed  systems, and customer training and technical support. These contracts
may involve significant  production, modification or  tailoring of hardware  and
software.  The  Company recognizes  revenue principally  from contracts  of this
type, using the percentage-of-completion method, based on performance milestones
specified in  each  contract,  if  any, where  such  milestones  fairly  reflect
progress   toward  contract  completion.  Revenue  from  maintenance  and  other
postcontract customer support is recognized ratably over the term of the related
agreement.
 
    The Company sells  most of  its products as  components in  the products  or
systems developed and marketed by its strategic partners. The Company also sells
products directly to end users. The Company typically experiences higher margins
in  connection with  its direct  sales contracts,  offset in  part by relatively
higher sales and marketing expenses.
 
    The Company tracks two types  of backlog: "order backlog," which  represents
signed  purchase orders  and which  the Company  believes represents  a reliable
indication of future  revenue, and "contract  backlog," which represents  signed
project  contracts  and  future  revenue, subject  to  the  signing  of specific
purchase orders.  Order  backlog reached  its  highest level  in  the  Company's
history  during fiscal 1996 and was $11.4 million at March 31, 1996, compared to
$5.5 million at March 31, 1995.
 
    The Company's revenue typically is concentrated among certain customers, the
largest of which in the  first nine months of  fiscal 1996 consisted of  TELMEX,
Teleglobe and ANSTEC. These customers represented approximately 24.5%, 13.2% and
10.7%,  respectively, of total revenue for the nine months ended March 31, 1996.
See "Risk Factors --  Reliance on Significant Customers  and Large Orders;  Long
Sales Cycles; Fluctuations in Results" and "Business -- Backlog."
 
    As  a result of the size of most of its contracts, the significant length of
sales cycles and the  complexities which arise from  time to time in  completing
any  given contract, the Company typically experiences fluctuations in quarterly
and year-to-year results. Marketing in  foreign countries, particularly in  Asia
and  other emerging markets, frequently requires extensive field testing and may
result in delays in the timing and closing of sales. The Company has experienced
significant delays in timing
 
                                       18
<PAGE>
of revenue related to sales in  overseas markets. See "Risk Factors --  Reliance
on  Significant Customers and  Large Orders; Long  Sales Cycles; Fluctuations in
Results" and "-- Risks Associated with International Operations."
 
    The Company's cost of products and services consists of the cost of  product
engineering  and  production,  personnel  cost  of  customer  support personnel,
license fees  paid to  third-party software  vendors, amortization  of costs  of
capitalized  software  development and  the cost  of  hardware purchased  by the
Company for incorporation into its products.
 
    Selling, general and administrative expenses consist of costs to support the
Company's sales and  administrative functions. Included  within these costs  are
salaries,  bonuses, commissions,  rent, insurance,  depreciation and non-product
amortization expenses. Also  included are  costs associated  with the  Company's
participation  in trade shows  and industry conferences,  and related travel and
other promotional costs.
 
    Research and development expenses consist of personnel costs related to  the
design  and development of  the Company's products. These  costs are expensed as
incurred. However,  computer  software  development  costs  incurred  after  the
technological  feasibility of a product is  established and until the product is
available for release  to customers  are capitalized.  Capitalized software  and
purchased  technology costs are amortized on a product by product basis based on
the greater of the ratio of current  sales to estimated total future sales or  a
straight-line  basis over the  remaining estimated economic  life of the product
(no greater than three years) including the current year.
 
    Effective  July  1,  1993,  the  Company  adopted  Statement  of   Financial
Accounting   Standards  ("SFAS")   No.  109,  "Accounting   for  Income  Taxes."
Previously, the Company used the deferral method for computing income taxes. The
adoption of  this standard  did not  have  a material  impact on  the  Company's
financial position or results of operations.
 
RESULTS OF OPERATIONS
 
    The  following table sets forth, for the periods indicated, certain items on
of the Company's statement of operations as a percentage of revenue:
 
<TABLE>
<CAPTION>
                                                                      FISCAL YEAR ENDED               NINE MONTHS ENDED
                                                                          JUNE 30,                        MARCH 31,
                                                            -------------------------------------  ------------------------
                                                               1993         1994         1995         1995         1996
                                                            -----------  -----------  -----------  -----------  -----------
<S>                                                         <C>          <C>          <C>          <C>          <C>
Revenue -- products and services..........................      100.0%       100.0%       100.0%       100.0%       100.0%
Costs and operating expenses:
  Cost of products and services...........................       52.7         52.8         53.0         51.5         50.9
  Selling, general and administrative.....................       36.5         37.7         48.7         50.6         36.2
  Research and development................................        7.0          3.9          8.4          7.7          4.8
                                                                -----        -----        -----        -----        -----
Income (loss) from operations.............................        3.8%         5.6%       (10.1)%       (9.8)%        8.1%
                                                                -----        -----        -----        -----        -----
                                                                -----        -----        -----        -----        -----
</TABLE>
 
NINE MONTHS ENDED MARCH 31, 1995 AND 1996
 
    REVENUE.  Revenue  increased by 42%,  from $9.2 million  in the nine  months
ended  March 31, 1995 to $13.1 million in  the nine months ended March 31, 1996.
The increase is attributable to increased sales volume of the Company's  carrier
network products to NYNEX and TELMEX and delivery of
NetPlus-Registered  Trademark-  network management  systems under  the Company's
contract with the U.S. Government.
 
    COST OF PRODUCTS AND SERVICES.  Cost of products and services increased  40%
from $4.8 million in the nine months ended March 31, 1995 to $6.7 million in the
nine  months ended  March 31,  1996. The  increase is  attributable to increased
purchases of hardware related to DCMS-Registered Trademark- units for the TELMEX
contract which were subsequently incorporated in shipped products. Gross margins
were 48% and 49% for  the nine months ended March  31, 1995 and March 31,  1996,
respectively.   The  improvement  in  gross   margin  was  caused  primarily  by
efficiencies resulting from increased order quantities and the sale of  products
directly to end users which have higher associated profit margins.
 
                                       19
<PAGE>
    SELLING,  GENERAL AND  ADMINISTRATIVE.  Selling,  general and administrative
expenses remained relatively constant for the nine month periods ended March 31,
1995 and 1996. These  expenses represented 50.6% and  36.2% of total revenue  in
the  nine months  ended March  31, 1995  and March  31, 1996,  respectively. The
increase is  attributed  to  the  Company's  continued  expansion  of  marketing
programs.  The Company expects these expenses to increase in future periods as a
result of plans to  position itself to penetrate  international markets for  its
carrier  network products, to expand sales of its network management products in
the United States and to hire additional management personnel to supplement  its
current management team. See "Business -- Sales and Marketing."
 
    RESEARCH  AND  DEVELOPMENT.    Research  and  development  expense  remained
relatively constant for the nine month periods ended March 31, 1995 and 1996. As
a percentage of revenue, research and development expense decreased from 7.7% in
the nine months ended March 31, 1995 to 4.8% in the nine months ended March  31,
1996, as a result of the increase in period to period revenue. The Company plans
to  spend significant resources on research and development in future periods to
enhance its  technology and  expects that  expenses, as  a percentage  of  total
revenue, will increase.
 
    PROVISION FOR INCOME TAXES.  No income tax benefit or provision was recorded
for  the nine  months ended  March 31,  1995 and  1996, respectively,  since any
benefit or  provision  was offset  by  a similar  increase  or decrease  in  the
valuation allowance.
 
YEARS ENDED JUNE 30, 1994 AND 1995
 
    REVENUE.   Revenue  decreased 14.5%,  from $14.5  million in  fiscal 1994 to
$12.4 million  in fiscal  1995.  The decrease  is attributable  to  simultaneous
delays in three large contracts due to matters beyond the Company's control. See
"-- Overview."
 
    COST  OF PRODUCTS  AND SERVICES.   Cost  of products  and services decreased
14.2% from $7.7  million in  fiscal 1994  to $6.6  million in  fiscal 1995.  The
decrease  is attributable to reduced  hardware purchases, reflecting the reduced
delivery of network management  products in fiscal 1995.  Since the decrease  in
these  costs was offset by a corresponding decrease in period to period revenue,
cost as a percentage of revenue remained unchanged. As a result, gross  margins,
as a percentage of revenue were also unchanged.
 
    SELLING,  GENERAL AND  ADMINISTRATIVE.  Selling,  general and administrative
expenses increased 10.5%  from $5.5 million  in fiscal 1994  to $6.0 million  in
fiscal  1995. These  expenses represented 37.7%  and 48.7% of  revenue in fiscal
1994 and  fiscal 1995,  respectively.  The increase  in expenses  resulted  from
increases  in  the  Company's  direct sales  force  and  in  marketing programs,
specifically on bid  and proposal efforts  relating to the  TELMEX and ANSTEC  -
U.S.  Air Force contracts  described under "Business  -- Strategic Alliances and
Other Customers." Additional costs were incurred  in fiscal 1995 as a result  of
the  hiring of executive accounting personnel. The increase in these expenses as
a  percentage  of  revenue  from  fiscal  1994  to  fiscal  1995  is   primarily
attributable to the decrease in period to period revenue.
 
    RESEARCH  AND DEVELOPMENT.   Research and development  expenses increased by
82.3% from $0.6 million  in fiscal 1994  to $1.0 million  in fiscal 1995.  These
expenses  represented  4.0%  and  8.4%  of  revenue  in  fiscal  1994  and 1995,
respectively. The increase in these expenses was primarily attributable to  work
performed  on  the  software  development relating  to  the  technology platform
developed in anticipation of a contract  with Teleglobe. An increase in  expense
was  also experienced  as a result  of hiring additional  software engineers and
support personnel in anticipation of planned research and development  expansion
in  fiscal 1996. The increase in these expenses as a percentage of total revenue
from fiscal 1994  to fiscal 1995  is primarily attributable  to the decrease  in
period to period revenue.
 
    PROVISION FOR INCOME TAXES.  No income tax benefit or provision was recorded
for the fiscal years ended June 30, 1994 and 1995 since any benefit or provision
was offset by a similar increase or decrease in the valuation allowance.
 
                                       20
<PAGE>
YEARS ENDED JUNE 30, 1993 AND 1994
 
    REVENUE.  Revenue increased 30.4% from $11.1 million in fiscal 1993 to $14.5
million in fiscal 1994. The increase is attributable to the delivery of a higher
volume  of products.  The Company  also experienced  an increase  in fiscal 1994
revenue as a  result of additional  sales to an  overseas subsidiary of  Digital
Equipment Corporation and to AT&T.
 
    COST  OF PRODUCTS  AND SERVICES.   Cost  of products  and services increased
30.8% from $5.9 million  in fiscal 1993  to $7.7 million  in fiscal 1994.  These
costs  increased as a result of  purchases of hardware and software incorporated
in automated directory  attendance systems,  primarily purchased  for U.S.  Army
bases.  As a percentage of revenue,  such costs remained unchanged. Accordingly,
gross margins as a percentage of revenue were also unchanged.
 
    SELLING, GENERAL AND  ADMINISTRATIVE.  Selling,  general and  administrative
expenses  increased 34.6% from  $4.1 million in  fiscal 1993 to  $5.5 million in
fiscal 1994. These  expenses represented 36.5%  and 37.7% of  revenue in  fiscal
1993  and fiscal 1994, respectively. The  increase in these expenses resulted in
part from  increases in  the  Company's direct  sales  force, primarily  at  the
executive level. In addition, the Company hired outside marketing consultants in
fiscal  1994, to help obtain certain contracts with certain government agencies.
The decrease  in  these  expenses  as  a  percentage  of  revenue  is  primarily
attributable to the increase in period to period revenue.
 
    RESEARCH  AND DEVELOPMENT.  Research and development expenses declined 26.4%
from $0.8 million in fiscal 1993 to $0.6 million in fiscal 1994. These  expenses
represented  7.0% and 3.9% of revenue in fiscal 1993 and 1994, respectively. The
decrease in these expenses was  primarily attributable to the capitalization  of
costs  associated  with the  NetPlus  technology platform,  as  a result  of the
establishment of technological feasibility.
 
    PROVISION FOR INCOME  TAXES.   The fiscal  1993 provision  for income  taxes
contained  a charge in  lieu of Federal  and state income  taxes that would have
been required  to be  paid had  the Company  not been  able to  utilize its  net
operating  loss carryforwards. The  tax benefit for fiscal  1993 of $0.2 million
resulting from such utilization is shown as an extraordinary item.
 
SELECTED QUARTERLY RESULTS
 
    The following tables present certain unaudited statement of operations  data
for  each quarter of  fiscal 1995 and  the first three  quarters of fiscal 1996.
These data have been derived  from the Company's unaudited financial  statements
and  have been  prepared on  the same basis  as the  Company's audited financial
statements which appear  elsewhere in  this Prospectus.  In the  opinion of  the
Company's  management, these  data include  all adjustments  (consisting only of
normal recurring adjustments) necessary  for a fair  presentation of such  data.
Such quarterly results are not necessarily
 
                                       21
<PAGE>
indicative  of future  results of operations.  This information  is qualified by
reference to, and should  be read in conjunction  with, the Company's  financial
statements and notes thereto included elsewhere in this Prospectus.
 
<TABLE>
<CAPTION>
                                                                       FISCAL THREE MONTHS ENDED
                                       -----------------------------------------------------------------------------------------
                                                          FISCAL 1995                                   FISCAL 1996
                                       --------------------------------------------------  -------------------------------------
                                        SEPT. 30,    DEC. 31,     MAR. 31,     JUNE 30,     SEPT. 30,    DEC. 31,     MAR. 31,
                                          1994         1994         1995         1995         1995         1995         1996
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
                                                                            (IN THOUSANDS)
<S>                                    <C>          <C>          <C>          <C>          <C>          <C>          <C>
STATEMENT OF OPERATIONS DATA:
Revenue -- products and services.....  $   2,879    $   3,552    $   2,807    $   3,177    $   3,433    $   4,772    $   4,906
Costs and operating expenses:
  Cost of products and services......      1,485        2,027        1,246        1,821        1,736        2,736        2,200
  Selling, general and
   administrative....................      1,505        1,576        1,594        1,374        1,362        1,610        1,772
  Research and development...........        218          268          226          333          132          235          264
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
(Loss) income from operations........       (329)        (319)        (259)        (351)         203          191          670
Interest expense, net................        (53)         (74)        (102)        (106)        (104)         (97)         (84)
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
(Loss) income before income taxes....       (382)        (393)        (361)        (457)          99           94          586
Income taxes.........................      --           --           --           --           --           --           --
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
Net (loss) income....................  $    (382)   $    (393)   $    (361)   $    (457)   $      99    $      94    $     586
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
 
AS A PERCENTAGE OF REVENUES:
Revenue -- products and services.....        100%         100%         100%         100%         100%         100%         100%
Costs and operating expenses:
  Cost of products and services......         52           57           44           57           51           57           45
  Selling, general and
   administrative....................         52           44           57           43           40           34           36
  Research and development...........          8            8            8           10            4            5            5
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
(Loss) income from operations........        (12)          (9)          (9)         (10)           5            4           14
Interest expense, net................         (2)          (2)          (4)          (3)          (3)          (2)          (2)
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
(Loss) income before income taxes....        (14)         (11)         (13)         (13)           2            2           12
Income taxes.........................      --           --           --           --           --           --           --
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
Net (loss) income....................        (14)%        (11)%        (13)%        (13)%          2%           2%          12%
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
                                       -----------  -----------  -----------  -----------  -----------  -----------  -----------
</TABLE>
 
    The  Company's quarterly operating results have in  the past and will in the
future vary significantly as  a result of the  timing of contract execution  and
delivery  of significant product orders. Large  orders typically are preceded by
long sales cycles and,  accordingly, the timing  of such an  order has been  and
will  continue to  be difficult to  predict. The  failure to obtain  one or more
large orders,  for any  reason, could  have  a material  adverse effect  on  the
Company's results of operations and financial condition.
 
    The  timing of large  orders depends on  a variety of  factors affecting the
capital spending  decisions of  the  Company's customers,  which, in  turn,  can
affect  the Company's quarterly operating results. These factors include changes
in governmental regulation, changes  in the customers' competitive  environment,
pricing  policies by the  Company or its  competitors, personnel changes, demand
for the Company's products, the number,  timing and significance of new  product
and  product enhancement announcements  by the Company  and its competitors, the
ability of  the  Company to  develop,  introduce  and market  new  and  enhanced
versions  of its products on a timely basis,  and the mix of direct and indirect
sales and general economic factors.
 
    The Company's sales cycle,  from initial contact  to contract execution  and
delivery  of product,  also varies substantially  from customer  to customer and
from project to project.  The purchase of carrier  network products and  network
management  products  generally involves  a  significant commitment  of customer
capital and management time. The sales cycle associated with the purchase of the
Company's products  is subject  to  a number  of additional  significant  risks,
including customers' budgetary constraints and internal acceptance reviews, over
which the Company has little or no control.
 
                                       22
<PAGE>
    The  Company's expense levels are based, in  part, on its expectations as to
future revenue  levels.  If revenue  levels  are below  expectations,  operating
results are likely to be materially adversely affected.
 
    Based upon all of the foregoing, the Company believes that quarterly revenue
and  operating results are likely  to vary significantly in  the future and that
period-to-period comparisons of  its results of  operations are not  necessarily
meaningful  and should not be relied  upon as indications of future performance.
Further, it  is likely  that in  some future  quarter the  Company's revenue  or
operating  results will be below the  expectations of public market analysts and
investors. In such  event, the  price of the  Common Stock  could be  materially
adversely affected.
 
LIQUIDITY AND CAPITAL RESOURCES
 
    The  Company's operating activities used cash of approximately $0.5 million,
$0.001 million,  and  $1.2  million  in  fiscal  years  1993,  1994,  and  1995,
respectively, and generated cash of approximately $1.5 million in the nine month
period  ended March  31, 1996.  During fiscal  1993, the  combination of  a $2.3
million increase in accounts receivable and a $0.5 million decrease in  deferred
revenue  more than offset cash  provided by the sum  of net income, adjusted for
$0.7 million  in non-cash  charges,  and a  $1.1  million increase  in  accounts
payable.  During fiscal 1994, net income,  increased by $0.6 million of non-cash
charges, was offset by  the combination of a  $0.7 million increase in  accounts
receivable,  a $0.4 million increase in inventory and a $0.4 million decrease in
accounts payable. Cash used in  1995 reflects the impact of  a net loss for  the
period  combined with a $0.3 million  increase in accounts receivable offset, in
part, by a $0.3 million increase in deferred revenue. Cash generated during  the
nine months ended March 31, 1996 is primarily attributable to net income of $0.8
million adjusted for non-cash charges of $0.6 million offset, in part, by a $0.4
million increase in inventories.
 
    Cash  used  for investing  activities of  $0.4  million, $0.2  million, $1.0
million, and $0.7 million in fiscal 1993,  1994, 1995 and the nine month  period
ended  March 31, 1996, respectively, reflect purchases of property and equipment
and capitalization  of software  development costs.  Purchases of  property  and
equipment,  consisting primarily of  computers and related  equipment, were $0.3
million, $0.3 million, $0.5 million, and $0.2 million in fiscal 1993, 1994, 1995
and for the nine months ended March 31, 1996, respectively. Capitalized software
development costs were $0.3 million, $0.7 million, $0.5 million and $0.5 million
in fiscal 1993, 1994, 1995 and for the nine months ended March 31, 1996.
 
    To date, the Company has used sales of preferred equity, cash generated from
operations and revolving bank  lines of credit to  fund its working capital  and
investing  activities.  Effective March  31, 1996,  the  Company entered  into a
credit agreement with a bank to finance inventory for a large foreign  contract.
Under  the agreement, the Company can borrow up  to $1 million at 1.25% over the
bank's prime rate.  The agreement requires  the Company to  comply with  certain
financial   covenants.  The  U.S.  Export-Import  Bank  guarantees  90%  of  the
outstanding balance, which is  collateralized by the  inventory and the  foreign
receivables  generated by  the contract.  This agreement  expires on  August 31,
1996.
 
    The Company entered into an agreement  for a $2.5 million revolving line  of
credit  which became effective on May 29, 1996 and expires on November 30, 1997.
Borrowings under the facility bear interest,  payable monthly, at 0.5% over  the
bank's prime rate. In addition, the Company replaced a second $1.35 million line
of  credit  with  $1  million  revolving line  of  credit.  This  facility bears
interest, payable monthly,  at 0.5% over  the bank's  prime rate and  is due  on
November 30, 1997. The Company also replaced $0.6 million of demand indebtedness
with  a loan of $0.6 million. This loan bears interest, payable monthly, at 1.0%
over the bank's prime  rate and is  due on November 30,  1997. These new  credit
facilities are secured by accounts receivable and inventory certain of which are
subordinated  to the security interests under  the credit agreement described in
the  immediately  preceding  paragraph,  and  the  agreement  contains   certain
financial covenants.
 
    In  connection with these agreements,  the Company reclassified $2.9 million
of current borrowings at March 31,  1996 to noncurrent borrowings in  accordance
with  SFAS  No.  6, "Classification  of  Short-Term Obligations  Expected  to be
Refinanced."
 
                                       23
<PAGE>
    The Company believes that the net proceeds from this offering, together with
existing cash balances, cash flow from operations and available bank lines, will
be sufficient to support the Company's working capital requirement for at  least
the   next  12  months.  Thereafter,  if   cash  generated  from  operations  is
insufficient to satisfy the Company's working capital requirements, the  Company
may  be  required to  raise additional  funds.  No assurance  can be  given that
additional financing will  be available  or that, if  available, such  financing
will be obtainable on terms favorable to the Company or its stockholders. To the
extent  the Company raises  additional capital by  issuing equity or convertible
debt securities, ownership dilution to  the Company's stockholders will  result.
In  the event that adequate funds are  not available, the Company's business may
be adversely affected.
 
RECENT ACCOUNTING PRONOUNCEMENTS
 
    SFAS No. 121, "Accounting  for the Impairment of  Long-Lived Assets and  for
Long-Lived  Assets to be Disposed  of," and SFAS No.  123, "Accounting for Stock
Based Compensation," both effective beginning with fiscal 1997, are not expected
to have a  material impact  on the Company's  financial position  or results  of
operations.
 
    The  Company's business is subject to significant risks that could cause the
Company's  results   to  differ   materially  from   those  expressed   in   any
forward-looking  statements  made in  this Prospectus.  These risks  include the
matters set forth above this caption, under "Risk Factors" and elsewhere herein.
 
                                       24
<PAGE>
                                    BUSINESS
 
GENERAL
 
    ACE*COMM develops, markets and services  OSS products for networks  deployed
by  telecommunications  service providers,  such  as telephone  companies, other
public carriers and large enterprises  operating data and voice networks  using,
intranets  and the  Internet. The Company's  products perform  such functions as
billing data  collection, network  surveillance,  alarm processing  and  network
management for some of the largest carriers and enterprises in the world.
 
    CARRIER NETWORK PRODUCTS
 
    The   Company's  primary  carrier  network  products  include  billing  data
collection and network surveillance systems for carriers seeking the ability  to
bring  services  to market  quickly  and for  many  emerging carriers  that lack
state-of-the-art billing data collection systems. These carriers typically focus
their internal development resources on networking and switching technology  and
on  marketing  their services  and  turn to  outside  suppliers to  obtain OSSs.
Outside suppliers provide flexible, efficient solutions that may be more  costly
for carriers to develop internally.
 
    The  Company's  carrier  network  products, which  consist  of  software and
hardware, connect to  existing network  infrastructures and  enable carriers  to
rapidly  and accurately collect  call records and  performance data and generate
displays, graphics  and reports  which are  used for  billing, fraud  detection,
customer  care, marketing research and  forecasting and other operations support
functions. These  products are  designed to  enhance the  carriers'  competitive
position  by allowing them to offer  new features and services, minimize network
down-time, increase revenue through more accurate and timely billing and improve
network productivity.  The  Company  has  expertise derived  from  13  years  of
developing  products  adapted  to a  variety  of network  hardware  and software
configurations. The Company believes that  it is well-positioned to continue  to
offer  its  carrier network  products  to international  customers  located, for
example in Europe,  Asia and  the Pacific Rim,  which typically  operate a  wide
variety  of switches from different manufacturers  and require a data collection
system capable of adapting to and integrating with the billing system and  other
OSSs. The Company's carrier network products have been installed in over 500 end
user  sites in  32 countries  in North, South  and Central  America, Europe, the
Middle East, and Asia, including China.
 
    The Company expects to increase  revenues from international markets,  which
are   experiencing   increasing  deregulation   and  privatization,   and  where
telecommunications  infrastructures  have  not  reached  nearly  the  stage   of
development  as in  the United States.  The Company believes  that its strategic
alliances  with  prominent  U.S.   and  international  carriers  and   equipment
manufacturers,  such as  AT&T, ICL  and Teleglobe  which are  actively marketing
carrier systems abroad, will enable  it to effectively increase its  penetration
of international markets.
 
    The Company also expects demand for its carrier network products to increase
in the United States as a result of the recent passage of the Telecommunications
Act of 1996, which removed certain existing barriers to entry and is expected to
result  in  the creation  of  new, alternative  carriers  and to  cause existing
carriers to upgrade their systems to meet increasing competition.
 
    NETWORK MANAGEMENT PRODUCTS
 
    The Company's network management products  are designed to meet the  growing
needs of large enterprises in the United States and abroad, including government
agencies,  military organizations,  educational institutions  and "Fortune 1000"
size organizations. As these enterprises  have become increasingly dependent  on
the  Internet and intranets for voice  and data communications, their demand for
reliable and flexible network management tools has increased.
 
    The Company  has packaged  network  management products  into  standardized,
flexible state-of-the-art software based systems that enable network managers to
manage  voice  and  data communications  by  automating  service administration,
tracking network connections, detecting system errors
 
                                       25
<PAGE>
and  malfunctions,   controlling   the   network   inventory   assignments   and
configuration,   monitoring  traffic  and   performing  billing  functions.  The
Company's network management products have  been installed in networks  operated
by over 100 end users sites in 10 countries.
 
    The   Company  is  well  positioned  to  develop  products  to  support  the
convergence and growth of telephony and data networks within the enterprise,  as
a  result of its knowledge and experience  in data control and network switching
technology. The Company's network management  products are designed to  increase
the  efficiency of communication operations  and incorporate recent developments
in object-oriented development, real-time  response, client server  architecture
and graphical user interfaces.
 
INDUSTRY BACKGROUND
 
    CARRIERS
 
    Historically,  the  telecommunications  industry has  been  characterized by
significant government regulation or ownership and limited competition. In  this
environment,  telecommunications services consisted  primarily of monopoly local
and long distance telephone service over traditional landlines. The beginning of
the break-up  of AT&T  in 1984  began a  deregulatory trend  that has  led to  a
proliferation of competition in the long-distance carrier market. More recently,
the  passage of the U.S. Telecommunications Act of 1996 is expected to create an
environment where both long distance and  local exchange carriers in the  United
States   will  increasingly  compete  with  one   another  for  both  local  and
long-distance services.  In addition,  domestic service  providers are  aligning
with  international telephone  companies to deliver  seamless services globally.
Today, both  domestic  and  international  telephony  carriers  face  increasing
competition  from  cable  and wireless  companies  for telephony  and  new, high
bandwidth voice, data and video services.
 
    In response to this evolving  competitive environment, carriers have  sought
to  reduce expenses and differentiate themselves by improving existing services,
and   rapidly   introducing   new    services   and   new   technologies.    New
telecommunications    services   include   high-speed   data   services,   video
teleconferencing, video-on-demand, home shopping  and home banking.  Competition
has increased the importance of rapidly bringing these new and enhanced services
to  market. The availability of new and  enhanced services has fueled a dramatic
increase  in  usage   of  telecommunications  services   by  organizations   and
individuals,   placing   additional  burdens   on   existing  telecommunications
infrastructures.
 
    Internationally, demand for better telecommunications services has increased
competition and resulted in privatization, investment in new infrastructures and
increased competition to provide better service. In less developed parts of  the
world,  carriers  are  implementing  new  systems  through  traditional landline
networks, new wireless technologies and other new technologies. Various  factors
have  further  contributed  to  acceleration  in  the  rate  of  growth  in  the
development of  the telecommunications  systems outside  of the  United  States,
including  the globalization of  business, the rise in  standards of living, the
increasing demand for reliable communications and the increasing deregulation in
the industry. Service providers in less  developed parts of the world  typically
are  building systems through the  purchase of equipment from  a wide variety of
suppliers, which results  in a  heterogeneous assortment of  switches and  other
network  hardware  and software.  This mix  generates a  need for  products that
support network operations  and can  be flexible  and adapted  to these  various
switches and system features. The Company's specialized knowledge and experience
with  a wide variety of switch equipment is particularly suited to meeting these
requirements.
 
    To develop, deploy and manage networks  and services, carriers rely on  OSSs
including  network  management  systems  ("NMS")  that,  among  other functions,
monitor equipment  performance  to  detect  errors  (fault  management),  report
network   performance  and  traffic  loads  (traffic  reporting),  help  in  the
performance of  market  research and  forecasting  and collect  and  consolidate
customer  usage information  (billing data  collection). Historically,  OSSs and
NMSs were  developed and  deployed in  an environment  characterized by  limited
competition  and slowly changing  technologies and services.  These systems were
typically mainframe-based, with proprietary software written in early generation
programming languages. As a result, these "legacy" systems were not designed for
rapid
 
                                       26
<PAGE>
deployment or adaptation, do not easily support heterogeneous equipment and  are
not  easily customized to fit  specific business needs. In  view of the industry
trends toward increased competition, technological complexity and rapid  change,
carriers require OSSs and NMSs that:
 
    - can  be  rapidly  deployed and  easily  adapted to  changing  business and
      network requirements;
 
    - interface with a wide  variety of existing  network equipment and  systems
      and accommodate new equipment and systems as they are deployed;
 
    - can  be tailored  through software  to provide  a variety  of OSS  and NMS
      functions; and
 
    - allow existing  networks to  accommodate  rapid growth  through  scaleable
      architecture.
 
OSSs  and NMSs that provide the foregoing benefits, and the products designed to
support them, will enable carriers to rapidly and cost effectively bring new and
enhanced services to market.
 
    ENTERPRISE NETWORKS
 
    The proliferation of new voice  and data services offered by  communications
companies  has increased the awareness of  and demand for network management and
billing systems. As  a result  of the growth  of network  usage and  competitive
pressures, enterprises in most industries have developed needs for sophisticated
NMSs,  which permit network managers to manage networks carrying different types
of voice  and data  communications  and to  lower  costs, manage  growth,  track
expenses and provide services without interruption.
 
    The  growing  dependence  on  intranets  and  the  Internet  to  support the
expanding information flow between offices, buildings and countries, both within
the enterprise  and to  and  from customers  and  suppliers of  the  enterprise,
requires  an efficient NMS to avoid the costly disruption of critical day-to-day
operations. Enterprises  increasingly rely  on e-mail,  phone mail,  facsimiles,
on-line  order entry, customer service  and telecommuting programs for employees
to transmit critical business information. For example, banks rely on  dispersed
automated  teller  machines to  conduct  banking transactions,  and  doctors and
hospitals rely on networks to transmit medical records and provide on-line care.
Furthermore, as  enterprises increase  the employment  of sophisticated  network
equipment  like  ATM,  Frame  Relay  and  X.25  data  switches,  it  will become
increasingly important for network managers to have the ability to charge  based
on  the amount of data transmitted. In cooperation with and funded by Newbridge,
the Company  is  developing  the  billing  component  for  their  advanced  data
switches.  The  billing  element  gives access  providers  flexible  options for
billing  users  of  data  network  services.  The  Company  anticipates  similar
opportunities  to  develop other  network  edge technologies  for  equipment and
service providers in the growing market for data services.
 
    Enterprises  which  require  NMSs  capable  of  handling  large  numbers  of
subscribers  efficiently,  reliably  and rapidly  include:  government agencies,
military  organizations,  educational  institutions  and  "Fortune  1000"   size
organizations. The NMS requirements of an organization become more sophisticated
as  the  number  of  subscribers,  locations,  users,  countries,  third parties
communicating with the organization, and types of hardware involved,  increases.
Network managers therefore require NMSs that provide:
 
    - the  ability  to  perform  high  volume  data  collection  and  to produce
      displays, graphics and  reports with  respect to  usage, surveillance  and
      management requirements;
 
    - the  ability  to manage  communications  over both  voice  circuits (e.g.,
      telephone, voice-mail) and data circuits (e.g., the Internet and  intranet
      connections,    e-mail,    facsimilies,    orders,    inventory   control)
      simultaneously;
 
    - the ability to bill for usage;
 
                                       27
<PAGE>
    - proprietary  and standard protocol  features which may  include the Simple
      Network Management Protocol ("SNMP");
 
    - compatibility  with   standard   network   management   platforms   (e.g.,
      Hewlett-Packard  Open  View,  IBM Netview  and  Sun Net  Manager)  and the
      ability to run under  standard operating systems  (e.g., UNIX, Windows  95
      and Windows NT); and
 
    - flexibility to accommodate expanding network management requirements.
 
    Telecommunications service providers benefit from the availability of timely
and  accurate  information  about  their  deployed  networks  because  it allows
increased  service  availability  without  increasing  network  investment.  The
Company  believes that advanced  products that support  their network operations
and sophisticated  network management  products are  important to  their  future
success.
 
ACE*COMM SOLUTIONS
 
    The  Company provides flexible, tailored solutions  that operate at the edge
of the network and address a range of systems and network management needs.  The
Company's  products, developed  with the  benefit of  the Company's  13 years of
experience, are designed  to improve  the efficiency of  revenue collection  for
carriers and decrease network operating expenses for enterprises. These products
provide  the information required for prompt,  accurate billing, real time fraud
detection, subscriber management and the ability to conduct market research  and
forecasting.  The  products incorporate  open system  architectures, accommodate
growth  through  scaleable  architecture,  and   can  adapt  to  most   standard
interfaces.  Network  management  products  are  modular  products  designed  to
increase the efficiency and management of data and voice networks and facilitate
communications on enterprise intranets and the Internet.
 
    The Company develops close, long-term relationships with its customers, from
the early  stage  of  project development  through  product  implementation  and
upgrading,  to identify their needs, and design and implement solutions that can
operate on a stand-alone basis or be tailored to a customer's specific  network.
The  Company  has  developed, and  continuously  refines, its  base  of software
applications, which  can  be combined  and  tailored  to meet  the  current  and
evolving requirements of its customers. The Company works closely with customers
after  initial  implementation, to  enable  customers to  include  new features,
expand  into  additional  geographic  markets   or  operate  with  new   network
technologies  and protocols. In addition,  the Company provides ongoing support,
maintenance and training related to the customer's system.
 
STRATEGY
 
    The Company's objective is to be the  market leader in the markets in  which
it participates. The Company plans to achieve this objective by implementing the
following strategies:
 
    FOCUS ON NEW AND EMERGING GROWTH MARKETS.  The Company's principal marketing
emphasis is on two types of carriers: existing providers and emerging providers.
Existing  providers are replacing their older systems, augmenting their existing
systems to support  new features and  services or adding  new systems to  enable
them  to expand into new domestic  and international markets. Emerging providers
worldwide are  expected  to  offer  new  types  of  services  such  as  personal
communications  systems ("PCS") and  are entering existing  service markets that
have been recently opened to competition  as a result of the  Telecommunications
Act  of 1996  and similar legislation  in other countries.  The Company believes
that its  experience in  providing  solutions to  markets worldwide  within  the
carrier  market, including local exchange, long distance and wireless, involving
applications for  a wide  variety of  switches and  other heterogeneous  network
system  elements,  provides  it  with  a  significant  competitive  advantage in
designing products  which can  effectively  handle the  growing needs  of  these
providers.
 
    EXPAND  STRATEGIC  ALLIANCES.   The  Company is  strengthening  its existing
strategic alliances  with marketing  partners and  creating new  alliances as  a
means of identifying new business opportunities
 
                                       28
<PAGE>
and    entering   new    markets.   These    strategic   alliances    are   with
internationally-recognized telecommunications equipment  and service  providers.
The  alliances are  a critical component  of the Company's  strategy to increase
penetration in large international markets, by leveraging on the reputation  and
marketing efforts of its partners.
 
    POSITIONING   COMPANY  PRODUCTS  IN  INTERNATIONAL  MARKETS.    Through  its
alliances with internationally focused partners, the Company intends to continue
to identify new users in emerging countries. Each new installation represents an
opportunity for the Company to provide additional products and services for  end
users.  The Company has expanded its  opportunities by providing products to one
type of  carrier in  a country,  often a  cellular carrier,  and leveraging  its
performance  and reputation with  that customer to sell  products to other local
carriers. The Company's experience with TELMEX is a model for this strategy. See
" -- Strategic Alliances and Other Customers."
 
    LEVERAGE TECHNOLOGICAL  LEADERSHIP.   The  Company is  continually  pursuing
opportunities to use its technological leadership to create product enhancements
such as real time data collection and subscriber data warehousing. Recently, the
Company led a national effort for the development of a standard protocol for use
with  the Microsoft Windows  operating system ("WinSNMP")  which is enabling the
development of  flexible,  decentralized  data network  management  systems.  In
conjunction  with this  effort, the  Company developed  enabling technology that
facilitates the use  of Microsoft  Windows, Intel processors  and the  Company's
NetPlus  products for managing networks.  To date, over 500  such kits have been
sold to  customers  such  as Microsoft  Corporation,  Oracle  Corporation,  3Com
Corporation,  Lotus Development  Corporation, CISCO  Systems, Inc.  and Symantec
Inc. To further its penetration of the data network market, the Company is  also
developing  the  billing component  for advanced  data switches,  which provides
access providers  with  flexible  options  for billing  users  of  data  network
services. The Company anticipates similar opportunities to develop other network
edge  technologies for equipment and service providers in the growing market for
data services.
 
    EXPAND SOFTWARE  OPTIONS TO  MEET THE  NEEDS OF  ENTERPRISES.   The  Company
continues to package its NetPlus software features into Company-standard systems
designed  to work individually  or as a group  and to facilitate enterprise-wide
voice and  data communications.  The Company  is also  expanding the  number  of
available  features to support data  communications networks and operations. The
Company believes it will be  particularly important to provide network  managers
with the flexibility to meet the increasing demands of converging voice and data
telecommunications markets and expanding enterprise network requirements.
 
    MAINTAIN  ISO 9001 PRODUCT  QUALITY REGISTRATION.   The Company has invested
substantial resources  to obtain,  and  plans to  continue such  investments  to
maintain,   the  registration  of   its  processes  and   procedures  under  the
international quality standard ISO 9001. This standard assures that the  Company
meets   rigorous   performance   and   quality   criteria   established   by  an
internationally  recognized  organization.  Compliance  with  this  standard  is
particularly   important   in   establishing  credibility   and   acceptance  in
international markets.
 
PRODUCTS
 
    All of the following products  reflect the Company's extensive knowledge  of
switch  interface technology and experience in  the collection and management of
data from switches made by virtually  any manufacturer. The Company has  applied
the  same expertise to network management  products for large enterprises, whose
complex networks often involve remote  locations and require similarly  flexible
and innovative designs to facilitate the flow of communications.
 
    CARRIER NETWORK PRODUCTS
 
    The Company's carrier network products meet the requirements of the existing
telephony  wireline businesses and the growing  markets of cable television, the
Internet and wireless businesses. The automation of data collection from  remote
switches  enables carriers to operate  larger, increasingly complex systems with
more customer  features more  reliably,  more cost  effectively and  with  fewer
personnel.  The Company's  carrier network  products are  designed to facilitate
more accurate and more
 
                                       29
<PAGE>
frequent billing, thereby  reducing billing  lag time  and accounts  receivable.
They also enable carriers to track calling patterns, reduce fraud, perform fault
management,   improve  network  performance,  and  verify  that  calls  are  not
needlessly routed through inefficient or expensive paths. These products  enable
a  carrier to  increase the size  of its system  and provide its  end users with
better  service,   in  remote   and  international   locations.  Following   are
descriptions of the Company's principal carrier network products:
 
    DATA COLLECTION
 
        DCMS-REGISTERED   TRADEMARK-  --  DCMS,   Distributed  Call  Measurement
    System-TM-, is  a  hardware  and software  based  microprocessor  controlled
    product  which  collects  call  record  data  from  telephone  switches  and
    electronically transmits them to a central  location, where the data can  be
    processed   for  such  purposes  as  billing,  traffic  analysis  and  fraud
    detection. DCMS  eliminates  magnetic tape  storage  units and  manual  data
    collection,  reduces processing costs, and increases the accuracy of billing
    data which, in  turn, increases revenue.  The most recent  version of  DCMS,
    NEDS-TM-,  Network Element Data Server, can  provide the data on a real-time
    basis. The Company also offers the DCMS*Plus-TM-, a version of DCMS which is
    based on a  new technology  platform and is  targeted at  carriers in  third
    world  and  emerging countries.  These products  can  be adapted  to support
    virtually all wireline and wireless telephone switches.
 
    BILLING REPORTS AND ACCESS TO CUSTOMER DATA
 
        UPS-32-REGISTERED TRADEMARK- -- UPS-32, Universal Polling System-32-TM-,
    is a mini-computer, server  or PC-based product,  programmed to control  the
    collection  and transmission of call  detail records transmitted by multiple
    DCMS units and similar equipment of other vendors. UPS-32 collects call data
    from  dispersed  switch  sites,  processes   and  formats  the  data  on   a
    customer-defined  schedule,  and  distributes  the  data  to  the customer's
    billing center. The most recent version of UPS-32, CANS-TM-, Central  Access
    Network Server, collects and distributes data in real-time.
 
        TIBS-TM-   --   TIBS,  TELMARS-TM-   International  Billing   System,  a
    software-based alternative carrier billing system, uses information gathered
    by the  DCMS or  other  providers' data  collection products,  and  provides
    carriers  with  billing  information.  TIBS  is  designed  to  reliably  and
    accurately bill for subscriber calls  originating in over 30 countries,  and
    to support accurate currency conversions based on daily exchange rates.
 
        TREX*COMM-TM- -- TREX*COMM is a software-based product designed for U.S.
    local  exchange  carriers  who  use  network  switches  to  provide customer
    premises voice and data communication services for business customers, under
    a service  concept  called  CENTREX. TREX*COMM  automates  the  transfer  of
    CENTREX call usage data from remote switch sites to customers' equipment and
    sorts  records by  customer codes,  group codes,  or other  identifying data
    fields. Using standard  modem protocols,  customers can  dial the  TREX*COMM
    system  to  retrieve  their data.  Running  on  UNIX platforms  and  used in
    conjunction with  a data  collection product,  such as  the DCMS,  TREX*COMM
    makes network information available to CENTREX subscribers to enable them to
    manage and control data.
 
    SURVEILLANCE AND ALARM (TRAFFIC REPORTING)
 
        UTS-32-REGISTERED TRADEMARK- -- UTS-32, Universal Traffic System-32-TM-,
    uses  information  gathered  by  DCMS  products  or  other  providers'  data
    collection products to  provide reports  on system  traffic and  usage on  a
    periodic  basis.  UTS-32 produces  hourly  group traffic  reports, multi-day
    study reports,  multi-day load  balancing reports,  multi-day group  traffic
    analyses, weekly historical usage reports, yearly trunk forecasting reports,
    and   other  engineering  information  used  to  monitor  and  maximize  the
    efficiency of the system and enable the carrier to minimize down-time.
 
        RTMS-TM- --  RTMS,  Real Time  Management  System, a  system  originally
    developed  for Teleglobe, monitors  network data in  real time and provides,
    from  a  single  data  base,  information  for  billing,  fraud   detection,
    subscriber    management    and   network    management.   The    heart   of
 
                                       30
<PAGE>
    RTMS is  a 600  gigabyte data  warehouse.  RTMS uses  NEDS to  capture  call
    records in real time from remote switches. RTMS processing software presents
    the data for analysis within 15 seconds of call completion.
 
        ANMS-REGISTERED  TRADEMARK- -- ANMS, AMAT Network Management System-TM-,
    monitors the elements of  a billing network. ANMS  is a mini-computer  based
    product that collects and reports on alarms sent by DCMSs, UPS-32s and other
    network  elements in the  billing system to  assure that no  billing data is
    lost. In addition, ANMS serves as a user interface and collects system  logs
    from  the network elements. The Company presently is adding standard network
    management protocols to ANMS.
 
    NETWORK MANAGEMENT PRODUCTS
 
    The Company provides network management products to enable network  managers
to  manage their networks more  effectively and to reduce  the cost of operating
the network. The Company's network management products meet the requirements  of
network managers of large, growing and increasingly complex integrated voice and
data  networks. The Company's network management products are designed to enable
network managers to operate their networks more efficiently, to more  accurately
control  costs, to  minimize network down  time, and to  implement other network
management features as their requirements grow and change.
 
        NETPLUS-REGISTERED TRADEMARK- VOICE AND  DATA NETWORK MANAGEMENT  SYSTEM
    --  The  NetPlus  family of  network  management products  consists  of five
    systems designed to  automate network operations  and management  functions.
    These  systems employ a client server  architecture and common database that
    permits them  to operate  either independently  or as  an integrated  whole.
    NetPlus products are scaleable, providing flexibility to accommodate a broad
    range  of  network  sizes  and  multiple  locations.  The  Company typically
    provides  NetPlus  products  as  fully  integrated  hardware  and   software
    configurations.  These  products  are  intended  to  manage  voice  and data
    networks for  1,000  to 50,000  users.  The Company  also  licenses  NetPlus
    software  to resellers to reach the  market for small size networks. NetPlus
    products are capable of providing total network management including: FAULT,
    CONFIGURATION, ACCOUNTING,  PERFORMANCE AND  SECURITY MANAGEMENT  ("FCAPS").
    These  products allow a network to  automate tasks such as alarm processing,
    connectivity tracking, automatic cable  and channel assignment, creation  of
    subscriber  and circuit records, inventory control, traffic surveillance and
    management, work order and  trouble ticket processing, directory  assistance
    and subscriber billing.
 
SALES AND MARKETING
 
    Historically, the Company's sales and marketing efforts have been managed by
a   small  group  of   senior  managers  with   substantial  experience  in  the
telecommunications  service  provider  market.  These  managers  relied  on  the
Company's   proven  performance  in  promoting  the  Company's  products.  Sales
opportunities originated primarily from (i) referrals, (ii) involvement in trade
shows and  industry  conferences,  (iii) responses  to  Requests  for  Proposals
received  from  telecommunications  service  providers,  governments  and  other
organizations and  (iv) leads  from  or contract  proposals with  the  Company's
strategic alliance partners. See "-- Strategic Alliances and Other Customers."
 
    The  sales  process  for  new  contracts  generally  requires  a significant
investment of time  and money and  takes from several  months to several  years.
This  process  involves  senior executives,  sales  representatives  and support
personnel and typically  requires presentations,  demonstrations, field  trials,
and lengthy negotiations.
 
    As  part of its sales  strategy, the Company spends  a significant amount of
time consulting with strategic partners and  end users to adapt its products  to
meet  end user  requirements. Through  ongoing sales,  maintenance, training and
systems analysis, the Company maintains contact with its partners and end  users
to  determine their evolving requirements  for updates and enhancements. Through
these processes, the Company gains valuable  industry expertise, as well as  the
ability to identify emerging industry applications and new sales opportunities.
 
                                       31
<PAGE>
    At  present, the Company  plans to significantly  increase its sales efforts
over the  next six  to 12  months through  more aggressive  sales and  marketing
strategies.   The   Company   is   hiring   more   direct,   experienced   sales
representatives,  adding  third  party  distribution  channels  and   developing
additional  strategic  alliances  with  carriers  and  communications  equipment
manufacturers to market the Company's products.
 
    The Company's products  typically are sold  as part of  systems sold to  the
customers of strategic partners. Resellers are also used to target markets where
large  numbers  of customers  with smaller  networks  are predominant.  A small,
direct sales force markets the Company's products in markets where relationships
are not established. The Company is in the process of identifying and  targeting
the  markets most likely  to need its products.  To date, as  a result of market
research and analysis,  the Company  has begun  to actively  market its  network
management products to universities and airports. The Company plans also certain
promotional  efforts targeted at identified potential enterprise customers, such
as  through  participation  at  the  American  College  and  University  Telecom
Association and other national conferences on network management and billing.
 
    The  Company is working with several manufacturers to promote the visibility
and positioning of its network management products. As a leader in the promotion
of SNMP, which is emerging as  an industry standard for network management,  the
Company has sold licenses to various suppliers, including Microsoft Corporation,
3Com  Corporation, CISCO  Systems, Inc.,  Lotus Development  Corporation, Oracle
Corporation and Symantec  Inc., enabling  them to incorporate  WinSNMP in  their
products  for use in  establishing network management  applications, which could
include NetPlus products.
 
    The Company plans to increase  its promotional and name recognition  efforts
over the next 12 months. It will continue to exhibit in trade shows and industry
conferences,  publish newsletters and hold user  group meetings. The Company has
also established a home page on  the Internet to communicate with customers  and
prospects.
 
CUSTOMER SUPPORT
 
    The  Company  believes  that a  high  level of  engineering  and development
services and customer support is critical to the Company's continuing success in
developing relationships with its strategic  partners and end users. To  augment
its   sales  efforts,   the  Company  offers   product-related  engineering  and
development services  to its  customers. The  Company offers  a range  of  other
services  to  customers,  including requirements  analysis,  project management,
system  design,  tailoring  and  installation,  training,  ongoing  support  and
upgrades.  Because the Company's services personnel work closely with customers,
they are able to gain valuable industry expertise, as well as identify  emerging
industry applications. In addition, the Company's services personnel are able to
identify  new sales opportunities.  When the Company  undertakes engineering and
development services for  customers, the  development often  results in  product
enhancement.
 
    The  Company offers technical customer support  24 hours per day, seven days
per week.  Support is  provided  via telephone,  remote  login, e-mail  and,  if
necessary,  on-site assistance. In addition, the Company has established a World
Wide Web  site  on  the  Internet which  keeps  customers  informed  of  product
developments.  International customers are supported  directly by the Company or
by local representatives that have been trained by the Company. The Company also
conducts training classes for its strategic partners and other customers.
 
STRATEGIC ALLIANCES AND OTHER CUSTOMERS
 
    In order to distribute its products effectively, the Company has established
strategic alliances with  several companies. The  Company's strategic  alliances
apply  to both its carrier network products and its network management products.
Each  alliance   is   designed  to   do   one   or  more   of   the   following:
 
                                       32
<PAGE>
establish  a  joint  marketing  relationship,  create  a  reseller  channel  for
products, facilitate the development of products and facilitate the distribution
of products.  These  alliances have  been  especially helpful  in  enabling  the
Company  to penetrate, on  a cost-effective basis,  international markets, where
the Company's alliance partners are well known and have well developed  business
relationships.
 
    Typically, the Company enters into a formal agreement with the partner which
specifies  product pricing and  the responsibilities of  each partner for system
integration, proposal drafting and  marketing. The Company's partners  generally
include ACE*COMM products in proposals to their customers in accordance with the
terms of these agreements. In some instances, the partner is the direct end user
of the Company's products.
 
    The  Company's carrier network products have  been installed in over 500 end
user sites in 32 countries. The Company's three largest carrier network  product
customers, including strategic alliance partners and end users, in each of 1993,
1994   and  1995,   accounted  for   approximately  20.9%,   24.6%,  and  43.0%,
respectively, of the Company's revenues in each of such years.
 
    The Company's network  management products have  been installed in  networks
operated by over 100 end user sites in 10 countries. Network management products
accounted for approximately 68.7%, 59.4%, and 37.1% of the Company's revenues in
1993,  1994 and 1995, respectively. Sales to ANSTEC during the nine months ended
March 31,  1996 represented  10.7%  of the  Company's  total revenues  for  that
period.
 
    The  following  is  a  list  of  the  Company's  most  significant strategic
alliances:
 
    CARRIER NETWORK PRODUCTS
 
        - AT&T WORLD SERVICES, INC. ("AT&T WORLD SERVICES") -- selected the DCMS
          and UPS-32 as operating components of its billing analysis systems for
          international toll gateways, to be sold to customers worldwide.  These
          systems  are used  to collect data  for traffic  analysis and billing.
          These systems have  been sold to  Telecom Networks and  International,
          Ltd.   of  Auckland,  New  Zealand;   the  Philippines  Long  Distance
          Telephone; Brunei;  Codetel, the  Dominican Republic's  long  distance
          carrier;  Unisource, a consortium of joint venture companies providing
          services in  Europe; Taiwan's  International Telephone  Authority  and
          Compania Anonima Nacional Telefonos de Venezuela.
 
        - CINCINNATI  BELL  INFORMATION SYSTEMS,  INC.  -- CBIS  is  the largest
          cellular billing service provider in  the world. The Company and  CBIS
          developed  a customized version of the DCMS which contains information
          management software designed  to meet  the needs  of cellular  service
          providers.  CBIS has installed over 50 DCMS units in the United States
          for AT&T  Wireless, formerly  McCaw Cellular,  one of  CBIS's  largest
          customers.  In addition, the Company currently is doing follow-on work
          to further  upgrade  these  systems  and  to  deploy  additional  DCMS
          products for other CBIS customers.
 
        - TELEGLOBE  CANADA,  INC.  --  Teleglobe  is  the  government chartered
          international long  distance provider  for  Canada. Teleglobe  has  an
          agreement  with the Company  for the development  of a data collection
          network, data warehouse  and operator  display system  to capture  and
          monitor  international traffic and usage  data and provide information
          for fraud detection and other OSS functions on a real time basis.  The
          result  of this cooperative development project was the Company's RTMS
          product, which is being marketed to other carriers worldwide.
 
        - LUCENT TECHNOLOGIES, INC. (FORMERLY AT&T NETWORK SYSTEMS) -- developed
          an OEM version  of the DCMS  to be used  in combination with  Lucent's
          BILLDATS-Registered   Trademark-   (corresponding  to   the  Company's
          UPS-32/CANS product) collection software with the Company. Lucent  has
          deployed  BILLDATS  systems  incorporating the  Company's  products in
          various domestic
 
                                       33
<PAGE>
          and international  teleprocessing  projects,  including  projects  for
          Ameritech,  the People's Republic of China and Korea Mobile Telephone.
          As Lucent pursues other opportunities in Asia, the Company expects its
          product to be included in future proposals.
 
        - SAMSUNG   ELECTRONICS   COMPANY,    LIMITED,   LG   INFORMATION    AND
          COMMUNICATIONS,  LIMITED AND ILGIN CORPORATION  -- formed a consortium
          to provide a  billing data  collection system for  Korea Telecom,  the
          national  carrier for the Republic of  South Korea. The consortium has
          purchased significant quantities of  the Company's products for  tests
          and  field  trials  and  the Company  expects  to  conclude partnering
          agreements with one  or more  of the  consortium members  in the  near
          future.
 
        - INTERNATIONAL  COMPUTERS LIMITED  -- is installing  the Company's NEDS
          and CANS  products along  with  its own  billing system  for  Vodafone
          Limited  in the  United Kingdom and  the national  cellular carrier in
          Indonesia.
 
        - GTE-TSI --  ordered  DCMSs  for installation  at  NYNEX  Mobile,  SNET
          Cellular  and  Puerto Rico  Telephone  Company Cellular  for  use with
          GTE-TSI's telephone fraud detection product. GTE-TSI has installed the
          UPS-32 product as part of its  own product and the Company expects  to
          install additional units pursuant to this arrangement.
 
    NETWORK MANAGEMENT PRODUCTS
 
        - ANSTEC,  INC. -- teamed  with the Company and  was selected, through a
          competitive procurement  process,  to install  the  Company's  NetPlus
          products  at 107  U.S. Air  Force bases  and 50  other U.S. government
          installations throughout the world.
 
        - AMERLND, INC. -- installed a version of the Company's NetPlus products
          as a part of the U.S. Army's automated directory attendance system  at
          installations throughout the United States.
 
        - BELLSOUTH  COMMUNICATION  SERVICES,  INC.  UNDER  CONTRACT  TO  HARRIS
          CORPORATION --  installed  systems containing  the  Company's  NetPlus
          products  to be operated by Harris  Corporation at National and Dulles
          Airports near Washington, D.C. The  Company expects to participate  in
          further airport projects with BellSouth and Harris Corporation.
 
        - GTE  GOVERNMENT  SYSTEMS  -- provides  telephone  systems  at military
          facilities throughout the  world. The Company,  as a subcontractor  to
          GTE  Government Systems for network  management products, installs and
          supports NetPlus  products at  40 of  these military  facilities.  The
          Company   expects,  through  its   continuing  relationship  with  GTE
          Government Systems,  to provide  additional products  and services  to
          military facilities.
 
        - AT&T  CORPORATION,  FEDERAL  SYSTEMS  DIVISION  --  provides telephone
          systems for the Executive Branch of the U.S. Government. The  Company,
          as a subcontractor to AT&T, installed and supports NetPlus products in
          the U.S. Department of State.
 
    The  following is  a list  of some of  the Company's  other most significant
customers  that  have  installed  the  Company's  carrier  network  and  network
management products within their organizations:
 
        - TELEFONOS  DE MEXICO, S.A.  DE C.V. -- TELMEX,  the national and local
          long distance carrier of Mexico, selected the Company to upgrade  data
          collection  throughout  its  switch  network  system.  The  three-year
          contract has an estimated value of $12 million.
 
        - GTE TELOPS (A  DIVISION OF  GTE TELEPHONE COMPANY)  -- purchased  DCMS
          systems for installation on certain switch types through its network.
 
        - TELCEL  -- is the largest cellular carrier in Mexico and has installed
          the Company's DCMS and UPS-32 products in its network.
 
                                       34
<PAGE>
        - NYNEX  --  is  installing  one  of  the  Company's  newest   products,
          TREX*COMM, to support its CENTREX customers.
 
        - ALLTEL  -- is  using the Company's  UPS-32 product  to provide billing
          services to its customers.
 
        - UNIVERSITY OF  IOWA  -- awarded  the  Company a  contract  to  install
          NetPlus to manage and monitor the University's voice and data network.
 
    In  addition,  companies  such  as  ISI  Infortext  Inc.,  Computer  Science
Corporation, Polaris  Communication Services,  Inc. and  Telsoft  International,
Inc.  have agreed to promote and sell  the Company's products on a non-exclusive
basis. They participate in trade shows, industry conferences and customer events
and feature ACE*COMM products in their marketing programs.
 
    As more  ATM, Frame  Relay  and X.25  data  switches are  incorporated  into
carrier  and  enterprise networks,  it  will become  increasingly  important for
network managers to be able to bill customers based on actual usage. The Company
is developing a  billing component  for advanced data  switches, which  provides
access  providers  with  flexible  options for  billing  users  of  data network
services. The Company anticipates similar opportunities to develop other network
edge technologies for equipment and service providers in the growing market  for
data services.
 
    The  Company plans to continue to develop and expand its strategic alliances
with established, well-recognized  industry leaders, as  it believes that  these
alliances  enable  the  Company  to  increase  sales  most  cost-effectively and
successfully position it to increase market penetration of its products.
 
BACKLOG
 
    The Company tracks two types  of backlog: "order backlog," which  represents
signed purchase orders and which the Company believes represents a reliable tool
for  forecasting  revenues,  and  "contract  backlog,"  which  represents signed
project contracts  and  future revenues,  subject  to the  signing  of  specific
purchase  orders. Order backlog was approximately as follows: $3.7 million, $5.7
million, $3.6 million, and $11.4 million, at  June 30, 1993, 1994 and 1995,  and
at  March  31,  1996,  respectively. Contract  backlog  was  approximately: $1.5
million, $2.6 million, $1.0  million, and $38.2 million  at June 30, 1993,  1994
and 1995, and at March 31, 1996, respectively.
 
    The  Company's contracts are large and technically complicated and require a
significant commitment of management and financial resources from the  Company's
customers.  The development of a contract typically is a lengthy process because
it must address a customer's specific technical requirements and often  requires
internal  approvals that require substantial lead time. Accordingly, the Company
may experience  significant  variations  in revenue  from  quarter  to  quarter,
reflecting delays in contract signing or contract order deliveries.
 
COMPETITION
 
    Competition  in the market  for the Company's products  is driven by rapidly
changing  technologies,  evolving  industry  standards,  frequent  new   product
introductions  and enhancements and  rapid changes in  customer requirements. To
maintain and  improve its  competitive position,  the Company  must continue  to
develop  and introduce, on  a timely and cost-effective  basis, new products and
product features that  keep pace  with technological  developments and  emerging
industry  standards  and address  the  increasingly sophisticated  needs  of its
customers.
 
    The Company expects the  continued growth of the  carrier market and of  the
large enterprise network management market to encourage new competitors to enter
the  markets in the future. The  Company believes that the principal competitive
factors in these markets include specialized project management capabilities and
technical expertise, compliance with  industry quality standards and  protocols,
customer  support,  product  features  such  as  adaptability,  scaleability and
flexibility, ability to integrate with other products, functionality and ease of
use, product reputation, responsiveness to
 
                                       35
<PAGE>
customer needs, and  timeliness of  implementation. In the  future, the  Company
will  be  required to  respond  promptly and  effectively  to the  challenges of
technological change and its competitors' innovations.
 
    In  the  carrier  network  products   market,  the  Company's  current   and
prospective competitors include (i) large carriers which internally develop full
system  products for  themselves, tailored  to their  particular specifications,
(ii) companies, such as Securicor Telesciences, Inc., CGI, Inc. ("CGI"), and IDT
- - Alston that can supply individual billing data collection components and (iii)
vendors  that  supply  product  components,  including  Hewlett-Packard  Company
("HP"), IBM Corporation ("IBM"), Moscom Corporation ("Moscom"), Objective System
Integrators, Inc. ("OSI") and CGI.
 
    In  the  network  management  products  market,  the  Company's  current and
prospective  competitors  include  (i)  companies  that  provide  products   for
telephony networks, such as Telco Research Corporation, Complimentary Solutions,
Inc.,  Stonehouse & Company, Switchview, Inc., Moscom and OSI and (ii) companies
that provide products for data networks, such as Remedy Corporation, Net Manage,
Inc., Computer Associates International, Inc.,  FTP Software, Inc., Castle  Rock
Computing, HP, IBM and Sun Microsystems, Inc.
 
    The  Company believes that its ability to compete in both markets depends in
part on  a number  of competitive  factors outside  its control,  including  the
ability  of others to develop technology  that is competitive with the Company's
products, the price at which competitors offer comparable products and services,
the extent of competitors' responsiveness to  customer needs and the ability  of
the Company's competitors to hire, retain and motivate key personnel.
 
    The  Company competes  with a  number of  companies that  have substantially
greater financial, technical, sales  marketing and other  resources, as well  as
greater   name  recognition  than  the  Company.  As  a  result,  the  Company's
competitors may be able  to adapt more quickly  to new or emerging  technologies
and  changes in  customer requirements,  or to  devote greater  resources to the
promotion and sale  of their  products than  can the  Company. There  can be  no
assurance  that the Company's current or  potential competitors will not develop
products comparable or superior to those developed by the Company or adapt  more
quickly  than  the  Company to  new  technologies, evolving  industry  trends or
changing customer requirements.
 
RESEARCH AND PRODUCT DEVELOPMENT
 
    The Company's research and development efforts are focused on developing new
products to meet the growing needs of carriers and enterprises and on  improving
existing  products by incorporating  new features and  technologies. The Company
believes that  the  timely  development  of new  products  and  enhancements  is
essential to its maintaining its competitive position in the marketplace.
 
    In  its  research and  development efforts  the  Company works  closely with
customers, end  users  and  leading technology  vendors,  often  in  cooperative
funding  arrangements. For  example, the  Company is  working with  Newbridge to
develop new  software for  its  data switch  products. The  Company  continually
reviews   opportunities  to   license  technologies  from   third  parties  when
appropriate based on timing and  cost considerations. The Company believes  that
this  approach facilitates and  accelerates the development  of new and enhanced
products.
 
    The Company's efforts are influenced significantly by industry  developments
and  by  customer  and  end  user requirements.  New  features  may  be tailored
initially for delivery to a  single customer and subsequently incorporated  into
future versions of the product which are available to all customers.
 
    During the fiscal years 1994, 1995 and the nine months ended March 31, 1996,
product  research and development  expenses were $0.6  million, $1.0 million and
$0.6 million, respectively.
 
PROPRIETARY RIGHTS AND LICENSES
 
    The Company does not currently hold any patents and relies on a  combination
of  statutory and/or common law, copyright, trademark, contract and trade secret
laws to maintain its proprietary rights
 
                                       36
<PAGE>
to its products. The Company believes that, because of, among other things,  the
rapid  pace  of  technological  change  in  the  telecommunication  and software
industries, patent protection for its products  is a less significant factor  in
the  Company's  success  than  the  knowledge,  ability  and  experience  of the
Company's employees, the  frequency of product  enhancements and the  timeliness
and quality of support services provided by the Company.
 
    The  Company  generally  enters  into  confidentiality  agreements  with its
employees, consultants, customers and potential customers and limits access  to,
and  distribution of, its proprietary information. Use of the Company's software
products is usually restricted  to specified locations and  is subject to  terms
and conditions prohibiting unauthorized reproduction or transfer of the software
products.  The Company also seeks to  protect its software, including the source
code, as a trade secret and as a copyrighted work.
 
EMPLOYEES
 
    At March 31, 1996, the Company employed a total of 119 employees,  including
29  involved  in  manufacturing  and  quality  assurance,  26  in  research  and
development, 21 in sales  and marketing, 15 in  professional services and 28  in
administration  and finance. None of the Company's employees is represented by a
labor union. The Company has experienced no work stoppages and believes that its
employee relations are good.
 
PROPERTIES
 
    The Company leases space at its four office locations: two in  Gaithersburg,
Maryland  and  one each  in  Flemington, New  Jersey  and Orlando,  Florida. The
Gaithersburg offices are the Company's  corporate headquarters and are used  for
product   assembly,  software  and  engineering  development  and  support.  The
Flemington office is  used for  the development and  project management  liaison
with  NYNEX, AT&T and Lucent Technologies.  The Orlando office is used primarily
for sales and sales support.
 
    The  following  sets  forth  information  concerning  the  Company's  leased
facilities:
 
<TABLE>
<CAPTION>
                                  SQUARE
LOCATION                          FOOTAGE      LEASE EXPIRATION      ANNUAL RENT
- -------------------------------  ---------  -----------------------  ------------
<S>                              <C>        <C>                      <C>
Gaithersburg, Maryland
  Perry Parkway                     21,800  July 31, 1996             $  220,000
  North Frederick Avenue             4,500  December 1, 1996          $   36,000
Flemington, New Jersey               2,500  December 31, 1996         $   39,600
Orlando, Florida                       400  April 30, 1997            $   11,040
</TABLE>
 
    The  Company believes that its facilities are adequate for its current needs
and that suitable additional space will be available as required.
 
LEGAL PROCEEDINGS
 
    The Company is not a party to any material legal proceedings.
 
                                       37
<PAGE>
                                   MANAGEMENT
 
EXECUTIVE OFFICERS AND DIRECTORS
 
    The executive officers and directors of the Company are as follows:
 
<TABLE>
<CAPTION>
NAME                                        AGE                              POSITION
- --------------------------------------      ---      ---------------------------------------------------------
<S>                                     <C>          <C>
George T. Jimenez.....................          60   President, Treasurer and Director
S. Joseph Dorr........................          48   Vice President -- Network Management Division
Thomas V. Russotto....................          51   Vice President -- Carrier Networks Division
James M. Moore........................          54   Vice President -- Marketing
Paul G. Casner, Jr. ..................          58   Director
Gary P. Golding.......................          39   Director
Gilbert A. Wetzel.....................          63   Director
</TABLE>
 
    GEORGE T. JIMENEZ  has served  as President and  a Director  of the  Company
since  its  inception in  1983. From  1980 to  1983, Mr.  Jimenez served  as the
President of the Company's predecessor.
 
    S. JOSEPH DORR has been Vice President -- Network Management Division  since
1988  and a  Vice President  of the Company  since 1983.  From 1983  to 1989, he
served as Corporate Secretary of  the Company. From 1980  to 1983, he served  as
Director of the Commercial Systems Division of the Company's predecessor.
 
    THOMAS  V. RUSSOTTO  has been  Vice President  -- Carrier  Networks Division
since 1988 and a Vice President of the Company since 1985. From 1983 to 1985, he
served as Director of Product Development at the Company.
 
    JAMES M. MOORE has been Vice President -- Marketing of the Company since May
1996. From March 1994 to May 1996, Mr. Moore served as Vice President,  Business
Market  of NYNEX, a telecommunications company, and  from May 1992 to March 1994
he served as Managing Director, Business Market of NYNEX. From March 1989 to May
1992, Mr. Moore served as Managing Director, Marketing of New England  Telephone
Company.
 
    PAUL  G. CASNER, JR.  has been a  Director of the  Company since 1983. Since
April 1994, Mr. Casner has served as President of DRS Electronic Systems  Group,
which  is comprised of the following entities: Technology Applications & Service
Company ("TAS"),  DRS Military  Systems, DRS  Medical Systems,  Inc. and  Laurel
Technologies.  From March 1991 to September  1993, Mr. Casner served as Chairman
and Chief Executive Officer of TAS.
 
    GARY P. GOLDING has been a Director of the Company since 1991. Since January
1989, Mr. Golding has served as General  Partner of CEO Venture Fund, a  venture
capital firm. Mr. Golding is a director of Databook, Inc.
 
    GILBERT  A. WETZEL has been a Director of the Company since 1992. Mr. Wetzel
has served as Regional Director of Key Executive Services for Right  Associates,
an  international human resources consulting firm, since 1994. He is the retired
Chairman and Chief Executive Officer of  Bell of Pennsylvania and Diamond  State
Telephone and founder and retired Chief Executive Officer of Geographic Business
Publishers, Inc.
 
    The  directors are divided into three classes, denominated as Class I, Class
II, and Class III, with the terms of office of each Class expiring at the  1997,
1998  and 1999  annual meetings  of stockholders,  respectively. At  each annual
meeting following such initial classification and election, directors elected to
succeed those directors whose terms expire shall be elected for a term to expire
at the third  succeeding annual  meeting of stockholders  after their  election,
provided  that the stockholders  electing new or  replacement directors may from
time to time specify a  term of less than three  years in order to maintain  the
number  of directors in  each class as  nearly equal as  possible. The directors
have been  initially divided  into classes  as follows:  Class I  -- Gilbert  A.
Wetzel, Class II -- Gary P. Golding and
 
                                       38
<PAGE>
Paul  G. Casner, Jr.,  Class III --  George T. Jimenez.  Officers of the Company
serve at  the  discretion  of  the  Board of  Directors.  There  are  no  family
relationships among any of the Company's directors and executive officers.
 
BOARD COMMITTEES AND COMPENSATION
 
    The Board of Directors has established an Audit Committee and a Compensation
Committee.   The  Audit  Committee  oversees  actions  taken  by  the  Company's
independent auditors,  recommends the  engagement of  auditors and  reviews  any
internal  audits  the Company  may  perform. The  current  members of  the Audit
Committee are Messrs.  Golding, Wetzel  and Casner.  The Compensation  Committee
approves the compensation of executives of the Company, makes recommendations to
the Board of Directors with respect to standards for setting compensation levels
and  administers  the Company's  Amended and  Restated  Omnibus Stock  Plan (the
"Stock Plan"). The  current members  of the Compensation  Committee are  Messrs.
Golding, Wetzel and Casner, none of whom is employed by the Company.
 
    Directors  are reimbursed for  their travel expenses  in attending Board and
Committee meetings. Each of the Company's current non-employee directors  (other
than  Mr.  Golding)  was granted  an  option  to purchase  5,420  shares  of the
Company's Common Stock at  an exercise price  of $.53 per  share on December  9,
1995,  pursuant to  the Company's Amended  Stock Option Plan  for Directors (the
"Directors Stock  Plan"). Only  non-employee directors  may participate  in  the
Directors  Stock Plan. The plan authorizes the  issuance of up to 100,000 shares
of Common Stock, subject to adjustment to reflect stock splits, recapitalization
and other changes in the outstanding  stock. Each eligible director is  entitled
under  the plan  to receive  upon his  election or  reelection as  a director an
option for a number of shares equal  to 5,420 multiplied by the number of  years
in  the term for which he is then  elected, exercisable at the fair market value
of the Common  Stock on the  date of  grant. The option  becomes exercisable  in
equal  installments of 5,420 shares on each anniversary of the date of grant or,
on such earlier  date as  the director  ceases to be  a director  other than  by
reason  of his  removal for  cause, if  such date  is 15  days prior  to such an
anniversary date and such director has served at least twelve months in  office.
Each  option expires upon the earlier of five  years from the date of grant, the
expiration of six months following death, resignation or removal other than  for
cause, or upon removal of a director for cause.
 
EXECUTIVE COMPENSATION
 
    The  following table sets  forth all compensation awarded  to, earned by, or
paid for services rendered  to the Company in  all capacities during the  fiscal
year  ended  June 30,  1995,  by the  following  executive officers  (the "Named
Executive Officers"): (i)  the Company's  Chief Executive Officer  and (ii)  the
Company's  other executive officers  whose salary and bonus  for the fiscal year
exceeded $100,000.
 
<TABLE>
<CAPTION>
                                                                       LONG-TERM
                                                                     COMPENSATION
                                                                        AWARDS
                                                                     -------------
                                               ANNUAL COMPENSATION    SECURITIES
                                               --------------------   UNDERLYING      ALL OTHER
NAME AND PRINCIPAL POSITION                    SALARY($)  BONUS($)   OPTIONS(#)(1)  COMPENSATION(2)
- ---------------------------------------------  ---------  ---------  -------------  -------------
<S>                                            <C>        <C>        <C>            <C>
George T. Jimenez............................  $ 145,000  $  22,563       40,244      $  10,775
  President, Treasurer and Director
S. Joseph Dorr...............................  $ 112,128  $   8,000            0      $     953
  Vice President
Thomas V. Russotto...........................  $ 106,328  $  22,563       27,441      $   1,106
  Vice President
</TABLE>
 
- ------------------------
(1) Options were granted in fiscal year 1996 for fiscal year 1995 performance.
(2) Consists of amounts paid in connection with a life insurance policy for  Mr.
    Jimenez  and disability insurance policies  for each Named Executive Officer
    as follows:  (i) Mr.  Jimenez;  $6,975 for  life  insurance and  $3,800  for
    disability  insurance;  (ii) Mr.  Dorr; $953  for disability  insurance; and
    (iii) Mr. Russotto; $1,106 for disability insurance.
 
                                       39
<PAGE>
    The following table sets forth information regarding the grant of options to
purchase  Common Stock to each of the Named Executive Officers during the fiscal
year ended June 30, 1995.
 
                          OPTION GRANTS IN FISCAL 1995
 
<TABLE>
<CAPTION>
                                                                                                 POTENTIAL REALIZABLE
                                                            INDIVIDUAL GRANTS                      VALUE AT ASSUMED
                                          -----------------------------------------------------    ANNUAL RATES OF
                                           NUMBER OF    PERCENTAGE OF                                STOCK PRICE
                                          SECURITIES    TOTAL OPTIONS                              APPRECIATION FOR
                                          UNDERLYING     GRANTED TO      EXERCISE                   OPTION TERM(3)
                                            OPTIONS     EMPLOYEES IN     PRICE PER   EXPIRATION  --------------------
NAME                                        GRANTED    FISCAL 1995(1)    SHARE(2)       DATE        5%         10%
- ----------------------------------------  -----------  ---------------  -----------  ----------  ---------  ---------
<S>                                       <C>          <C>              <C>          <C>         <C>        <C>
George T. Jimenez.......................      30,623          10.6%      $     .69     09/11/99  $   5,807  $  12,832
S. Joseph Dorr..........................      13,501           4.7%      $     .69     09/11/99      2,560      5,657
Thomas V. Russotto......................      56,373          19.6%      $     .69     09/11/99     10,690     23,622
</TABLE>
 
- ------------------------
(1) All of the  options were  granted under the  Company's Stock  Plan and  were
    fully vested and exercisable on the date of grant.
 
(2) The  exercise price  per share of  the options granted  represented the fair
    market value  of the  underlying shares  of Common  Stock on  the dates  the
    respective options were granted.
 
(3) Potential  realizable value is based on the assumption that the Common Stock
    of the Company appreciates  at the annual  rate shown (compounded  annually)
    from  the date of grant  until the expiration of  the five year option term.
    These numbers are calculated  based on the  requirements promulgated by  the
    Securities and Exchange Commission (the "Commission") and do not reflect the
    Company's estimate of future stock price growth.
 
    The  following  table  sets  forth  certain  information  concerning  option
exercises during fiscal 1995 by the Named Executive Officers and the number  and
value  of  securities underlying  options held  by each  of the  Named Executive
Officers at the end of fiscal 1995.
 
             AGGREGATE OPTION EXERCISES AND YEAR-END OPTION VALUES
<TABLE>
<CAPTION>
                                                                                                           VALUE OF
                                                                                                          UNEXERCISED
                                                                                                         IN-THE-MONEY
                                                                       NUMBER OF SECURITIES UNDERLYING      OPTIONS
                                                                       UNEXERCISED OPTIONS AT JUNE 30,    AT JUNE 30,
                                                                                     1995                   1995(1)
                                      SHARES ACQUIRED       VALUE      --------------------------------  -------------
NAME                                  ON EXERCISE(#)      REALIZED     EXERCISABLE     UNEXERCISABLE      EXERCISABLE
- -----------------------------------  -----------------  -------------  -----------  -------------------  -------------
<S>                                  <C>                <C>            <C>          <C>                  <C>
George T. Jimenez..................              0                0       213,646                0       $   2,052,633
S. Joseph Dorr.....................              0                0       165,749                0           1,597,833
Thomas V. Russotto.................              0                0        97,696                0             923,445
 
<CAPTION>
 
NAME                                   UNEXERCISABLE
- -----------------------------------  -----------------
<S>                                  <C>
George T. Jimenez..................      $       0
S. Joseph Dorr.....................              0
Thomas V. Russotto.................              0
</TABLE>
 
- ------------------------
(1) Value for "in-the-money" options represent  the positive spread between  the
    respective  exercise prices  of outstanding  options and  an assumed initial
    public offering price of  $10.00 per share (the  mid-point of the  estimated
    range of the initial public offering price).
 
AMENDED AND RESTATED OMNIBUS STOCK PLAN
 
    The  Company  has adopted,  subject  to stockholder  approval,  the ACE*COMM
Corporation Amended  and Restated  Omnibus Stock  Plan (the  "Stock Plan").  The
maximum  number of shares of Common Stock in respect of which stock-based awards
may be granted under the Stock Plan is 1,500,000. The shares of Common Stock  to
be  delivered under  the plan  will be  made available  from the  authorized but
unissued shares of Common Stock.
 
    The Stock Plan  will be administered  by the Compensation  Committee of  the
Board  of Directors (the "Committee"), upon which  no director who is an officer
of  the  Company  may  serve,  and  which  comprises  only  Directors  who   are
"non-employee  directors" within  the meaning  of Rule  16b-3 of  the Securities
Exchange Act of  1934, as  amended (the "Exchange  Act"), and  who are  "outside
directors"
 
                                       40
<PAGE>
within  the meaning of Section  162(m) of the Internal  Revenue Code of 1986, as
amended  (the  "Code").  All  employees  of  the  Company,  including   employee
directors, are eligible to participate in the Stock Plan. It is anticipated that
the  Committee's determinations  of which  eligible individuals  will be granted
awards and the  terms thereof  will be based  on each  individual's present  and
potential contribution to the success of the Company.
 
    Stock  options may be granted under the  Stock Plan at the discretion of the
Committee and subject to such terms  and conditions determined by the  Committee
and  set forth in a grant agreement. Options granted under the Stock Plan may be
either nonqualified  options  or  incentive stock  options.  The  Committee  has
discretion  to fix the exercise  price of such options at  a price not less than
100% of the fair market  value of the underlying shares  of Common Stock at  the
time  of grant thereof. The  Committee has broad discretion  as to the terms and
conditions upon which options shall  be exercisable, but under no  circumstances
will an option have a term exceeding 10 years from date of grant.
 
    The  option exercise price may be satisfied in cash or, in the discretion of
the Committee, by exchanging shares of Common Stock owned by the optionee, by  a
combination  of cash and shares  of Common Stock or by  such other means and the
Committee may prescribe. The ability to pay the option exercise price in  shares
of  Common Stock  would, if  permitted by the  Committee, enable  an optionee to
engage in  a  series  of  successive  stock-for-stock  exercises  of  an  option
(sometimes  referred to  as "pyramiding") and  thereby fully  exercise an option
with little or no cash investment. The Company also may make or guarantee  loans
to grantees to assist grantees in exercising stock options.
 
    The  terms of an option  may provide for the automatic  grant of a new award
exercisable for not more  than the number of  shares tendered when the  exercise
price of the option and/or related tax obligation is paid by tendering shares of
Common  Stock (sometimes  referred to as  "reload options"),  subject to certain
limitations set forth in the Stock Plan. Incentive stock option awards under the
Stock Plan must comply with Section 422  of the Code, including with respect  to
grants  made to a grantee who owns more than 10% of the outstanding stock of the
Company, that the exercise price shall be not less than 110% of the fair  market
value  of the underlying shares on the date of grant and that the aggregate fair
market value of shares of Common Stock with respect to which all incentive stock
options first became exercisable by a grantee in any calendar year shall  either
not exceed $100,000 or be treated as non-qualified options.
 
    The Committee also may grant stock appreciation rights. Upon the exercise of
a  stock  appreciation  right  with  respect  to  a  share  of  Common  Stock, a
participant would be entitled to receive the excess of the fair market value  of
such  shares  over the  exercise  price of  such  right. The  Committee  has the
authority to determine whether the value  of a stock appreciation right is  paid
in cash or shares of Common Stock or a combination of both.
 
    The  Committee also has discretion to  make contingent grants of performance
shares which will be earned to  the extent performance goals established by  the
Committee  are achieved over  a period of  time specified by  the Committee. The
Committee will  have  discretion to  determine  the value  of  each  performance
shares,  to adjust the performance goals as it deems equitable to reflect events
affecting the  Company or  changes  in law  or  accounting principles  or  other
factors, and to determine the number of performance share which have been earned
based   on  performance  relative  to  such  performance  goals.  The  value  of
performance shares that are earned may,  in the discretion of the Committee,  be
paid in the form of cash, shares of Common Stock, or a combination of both.
 
    Awards  of stock or stock payment units under the Stock Plan will be made at
the discretion of the Committee  and will consist of  shares of Common Stock  or
units  denominated in dollars granted to a  participant, which may be subject to
forfeiture and restrictions on transfer. In general, a participant who has  been
granted  restricted  stock will  from the  date  of grant  have the  benefits of
ownership in respect of such shares, including the right to vote such shares and
to  receive  dividends   and  other  distributions   thereon,  subject  to   the
restrictions  set forth in the Stock Plan  and in the instrument evidencing such
award. The shares  of restricted stock  will be held  by the Company,  or by  an
escrow agent designated by the Company, during the restricted period and may not
be sold, assigned,
 
                                       41
<PAGE>
transferred,  pledged,  or  otherwise  encumbered  until  the  restrictions have
lapsed. The Committee has authority to determine the duration of the  restricted
period  and  the conditions  under with  stock  and stock  payment units  may be
forfeited, as  well as  the other  terms and  conditions of  such awards.  Stock
payment units may be paid, in the discretion of the Committee, in cash or shares
of Common Stock or a combination of both.
 
    The Stock Plan also authorizes the Committee to grant to participants awards
of  shares of Common Stock and other awards  that are valued in whole or in part
by reference to, or are otherwise based on, the value of shares of Common  Stock
("Stock   Unit  Awards").  The   Committee  has  discretion   to  determine  the
participants to whom Stock Unit Awards are  to be made, the times at which  such
awards are to be made, the size of such awards, and all other conditions of such
awards,   including   any   restrictions,  deferral   periods,   or  performance
requirements. The provisions of  the Stock Unit Awards  will be subject to  such
rules and regulations as the Committee shall determine at the time of grant.
 
    Any  award under  the Stock  Plan may provide  that the  participant has the
right to  receive  currently  or  on a  deferred  basis  dividends  or  dividend
equivalents  and/or other cash payments in addition to or in lieu of such award,
all as the Committee shall determine.
 
    If the Committee determines  that any stock split,  stock dividend or  other
distribution  (whether  in the  form of  cash,  securities, or  other property),
recapitalization, reorganization,  merger,  consolidation,  split-up,  spin-off,
combination,  repurchase or  exchange of shares,  issuance of  warrants or other
rights to purchase shares at a price  below fair market value, or other  similar
corporate  event affects the Common Stock such that an adjustment is required in
order to preserve the benefits intended under the Stock Plan, then the Committee
has discretion to make (i) equitable adjustments  (a) in the number and kind  of
shares  that may be the subject of future awards under the Stock Plan or (b) the
number and  kind  of  shares  (or  other  securities  or  property)  subject  to
outstanding  awards and the respective grant  of exercise prices thereof and/or,
(ii) if appropriate, to provide for the payment of cash to a participant.
 
    The Committee has broad discretion as  to the specific terms and  conditions
of each award and any rules applicable thereto, including but not limited to the
effect  thereon of the death, retirement,  or other termination of employment of
the participant and the effect, if any,  of a change in control of the  Company.
The terms of each award are to be evidenced by a written instrument delivered to
the  participant.  The awards  authorized under  the Stock  Plan are  subject to
applicable tax  withholding  by  the  Company which  may  be  satisfied  by  the
withholding  of shares issuable under the Stock Plan, and may not be assigned or
transferred, except by will or the laws of descent and distribution.
 
    No award may be granted under the Stock Plan after the tenth anniversary  of
the effective date of the Stock Plan.
 
    The  Stock Plan  may be amended  or terminated at  any time by  the Board of
Directors, except that no amendment may be made without stockholder approval  if
such  approval is  necessary to comply  with any tax  or regulatory requirement,
including any approval requirement which is a prerequisite for exemptive  relief
from Section 16 of the Exchange Act.
 
    The Stock Plan is not subject to any provision of ERISA and is not qualified
under Section 401(a) of the Code.
 
    Special  rules apply to  a participant who  is subject to  Section 16 of the
Exchange Act. Certain additional special rules  apply if the exercise price  for
an  option is paid  in shares of  Common Stock previously  owned by the optionee
rather than in cash.
 
    Counsel has provided  the Company with  the following brief  summary of  the
Federal  income tax  consequences, under the  Code as currently  in effect, with
respect to (i)  incentive stock  options, (ii) non-qualified  stock options  and
(iii) restricted stock awards:
 
    (i)  INCENTIVE STOCK OPTIONS.  No taxable income is realized by the optionee
upon  the  grant or  exercise of  an incentive  stock option.  If there  were no
disposition of the option shares until more than
 
                                       42
<PAGE>
two years after the option is granted and more than one year after the option is
exercised, the gain or loss realized by the optionee on the sale of such  shares
would be treated as long-term capital gain or loss, and the Company would not be
entitled  to any income tax deduction by reason  of the grant or exercise of the
option. If the option shares were disposed of in a sale, exchange, gift or other
"disqualifying disposition" prior to the expiration of the
two-years-from-grant/one-year-from-exercise holding  period, generally  (a)  the
optionee  would realize taxable ordinary income  in the year of such disposition
in an amount  equal to  the excess (if  any) of  the fair market  value of  such
shares  at the  time of  exercise of  the option  over the  option price thereof
(except that, if the disposition  is a sale or exchange  of the type on which  a
loss,  if sustained, would be recognized to such optionee, ordinary income would
be realized by such  optionee in an  amount equal to only  the gain realized  on
such  sale or exchange if such gain is  less than such excess) and would realize
capital gain on the balance of the  gain, and (b) the Company would be  entitled
to a deduction for such year in the amount of the ordinary taxable income to the
optionee.
 
    (ii)   NON-QUALIFIED OPTIONS.  No taxable income is realized by the optionee
upon the grant of a  non-qualified option. On exercise,  the excess of the  fair
market value of the shares at the time of exercise over the option price of such
shares would be treated as compensation. Any amounts treated as compensation (a)
would be taxable at ordinary income tax rates in the year of exercise, (b) would
be  subject to  withholding for Federal  income tax purposes,  and (c) generally
would be an allowable  income tax deduction to  the Company. The optionee's  tax
basis for shares acquired upon exercise of a non-qualified option would be equal
to   the  option  price  paid  for  the  shares  plus  any  amounts  treated  as
compensation. An optionee would generally be entitled to long-term capital  gain
treatment  on the  difference between his  tax basis  and the sale  price of the
shares acquired upon exercise.
 
    (iii)  RESTRICTED STOCK AWARDS.  No income would be realized by an  employee
in  connection with the grant of a restricted stock award. When the restrictions
lapse, the employee would be required to include as taxable ordinary income  the
fair market value of such shares at the time the restrictions lapse. The Company
would  be entitled to a  deduction for Federal income  tax purposes equal to the
amount so  included in  such employee's  income. An  employee may,  by making  a
Section  83(b) election within  30 days after  the transfer of  stock, choose to
recognize income upon the grant of a restricted stock award. Any appreciation in
the stock value after the grant date will, if the stock is held long enough,  be
eligible  for long-term capital  gain treatment upon the  subsequent sale of the
stock. However, if the stock is forfeited later, the loss deduction allowable is
limited to the price paid for the stock (if any) minus any amounts received upon
such forfeiture.
 
    (iv)  PAYMENT OF WITHHOLDING TAXES.  The Company may withhold, or require  a
participant  to  remit  to the  Company,  an  amount sufficient  to  satisfy any
federal, state and local withholding tax requirements. The Committee may  permit
a  participant to satisfy a tax withholding requirement on exercise of an option
by delivery  to  the  Company  of  shares of  its  Common  Stock  owned  by  the
participant,  including  shares  the  participant is  entitled  to  receive upon
exercise of the option.
 
    (v)   CODE SECTION  162(M).   Section  162(m) of  the  Code limits  the  tax
deduction   available  for  compensation   paid  to  the   Company's  five  most
highly-compensated  individuals  in   excess  of  $1,000,000.   To  the   extent
practicable,  awards under the Stock Plan  to designated executives will qualify
as "performance-based" compensation  which is excluded  from the Section  162(m)
cap  on deductibility. Stock options issued under the Stock Plan are expected to
be fully deductible as performance-based.
 
    (vi)  OTHER.   To the extent  payments which are contingent  on a change  in
control  are determined to exceed certain  Code limitations, they may be subject
to a 20% nondeductible  excise tax and the  Company's deduction with respect  to
the associated compensation expense may be disallowed in whole or in part.
 
    The  foregoing discussion summarizes the  Federal income tax consequences of
the Stock Plan  based on current  provisions of  the Code which  are subject  to
change.  This summary  does not  cover any  state or  local tax  consequences of
participation in the Stock Plan.
 
                                       43
<PAGE>
EMPLOYMENT AGREEMENTS AND CHANGE IN CONTROL ARRANGEMENTS
 
    The Company currently  has no  employment contracts  with any  of the  Named
Executive Officers, and the Company has no compensatory plan or arrangement with
such  Named Executive Officers where the amounts  to be paid exceed $100,000 and
which are  activated upon  resignation, termination  or retirement  of any  such
executive officers upon a change in control of the Company.
 
LIMITATION ON LIABILITY OF DIRECTORS
 
    The  Charter  provides that  a director  will not  be personally  liable for
monetary damages to the Company or its stockholders for breach of fiduciary duty
as a director, except to the  extent such exemption for liability or  limitation
thereof  is not  permitted under Maryland  law, including liability  (i) for any
breach of the  director's duty of  loyalty to the  Company or its  stockholders,
(ii)  for  acts or  omissions not  in  good faith  or which  involve intentional
misconduct or  a  knowing violation  of  law, (iii)  for  paying a  dividend  or
approving  a  stock repurchase  in violation  of Section  2-311 of  the Maryland
Corporation Law or (iv) for any  transaction from which the director derived  an
improper personal benefit.
 
    While  the Charter  provides directors  with protection  from having  to pay
monetary damages for breaches of their duty of care, it does not eliminate  such
duty.  Accordingly,  the Charter  will  have no  effect  on the  availability of
equitable remedies such  as an injunction  or rescission based  on a  director's
breach of his or her duty of care. The provisions of the Charter described above
apply  to an  officer of  the Company  only if he  or she  is a  director of the
Company and is acting in his capacity as director, and do not apply to  officers
of the Company who are not directors.
 
INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
    The  Charter provides that the Company  shall indemnify its currently acting
and its  former officers  and  directors against  any  and all  liabilities  and
expenses  incurred in connection  with their services in  such capacities to the
maximum extent permitted  by Maryland  law, as from  time to  time amended.  The
Charter  further provides that  the right to  indemnification shall also include
the right to be paid by the Company for expenses incurred in connection with any
proceeding arising out of  such service in advance  of its final disposition  to
the fullest extent permitted by Maryland law.
 
    The Charter further provides that the Company may, by action of its Board of
Directors,  provide indemnification to  such of the employees  and agents of the
Company and  such other  persons serving  at the  request of  the Company  as  a
director,  officer, partner, trustee, employee  or agent of another corporation,
partnership, joint venture,  trust, or other  enterprise to such  extent and  to
such  effect as is  permitted by Maryland  law and the  Board of Directors shall
determine to be appropriate.
 
    The Company expects  to purchase  and maintain  insurance on  behalf of  any
person  who is or was a director, officer, employee, or agent of the Company, or
is or was serving at the request of the Company as a director, officer, employee
or agent of  another corporation,  partnership, joint venture,  trust, or  other
enterprise  against any expense,  liability, or loss incurred  by such person in
any such capacity  or arising  out of  his status as  such, whether  or not  the
Company  would  have the  power to  indemnify him  against such  liability under
Maryland law.
 
    The Charter  provides  that (i)  the  Board  of Directors  may,  by  by-law,
resolution   or  agreement,  make  further   provision  for  indemnification  of
directors, officers, employees and agents and (ii) no amendment, modification or
repeal of  the Charter,  nor the  adoption of  any additional  provision of  the
Charter or the By-laws nor, to the fullest extent permitted by Maryland law, any
amendment, modification or repeal of law shall eliminate or reduce the effect of
the provisions in the Charter limiting liability or indemnifying certain persons
or  adversely affect any right or protection then existing thereunder in respect
of any  acts  or omissions  occurring  prior to  such  amendment,  modification,
repeal, or adoption.
 
                                       44
<PAGE>
                              CERTAIN TRANSACTIONS
 
    In  connection with  the purchase  of certain assets  by the  Company at its
inception, Mr. Jimenez, the Company's  President loaned $150,000 to the  Company
to  assist in financing the acquisition. The  note bears interest at the federal
short-term rate  established periodically  by the  U.S. Treasury.  Principal  is
payable upon demand and interest is paid quarterly. The outstanding loan balance
was  $78,572 at March  31, 1996 and will  be entirely repaid  out of proceeds of
this offering. See "Use of Proceeds."
 
    During fiscal years 1994 and 1995 and the nine months ended March 31,  1996,
the   Company   purchased  voice   processing  systems   totaling  approximately
$1,036,000,  $62,000,  and  $73,000,  respectively,  from  Microlog  Corporation
("Microlog"),  a  company whose  Board of  Directors  included Mr.  Jimenez, the
Company's President, and Graham Hartwell, a former Director of the Company.  Mr.
Jimenez  resigned  from Microlog's  Board  of Directors  in  January 1994.   Mr.
Hartwell retired from  the Company's Board  of Directors in  December 1995.  The
Company  expects  to continue  to do  business  with Microlog  on terms  no less
favorable to  the Company  than could  be obtained  from an  unaffiliated  third
party.
 
    The  Company believes that all of the transactions set forth above were made
on terms no less  favorable to the  Company than could  have been obtained  from
unaffiliated  third parties. All further  transactions, including loans, between
the Company  and  its  officers, directors,  principal  shareholders  and  their
affiliates will be approved by a majority of the Board of Directors, including a
majority  of  the  independent  and  disinterested  outside  directors  and will
continue to be, in the judgment of  such a majority, on terms no less  favorable
to the Company than could be obtained from unaffiliated third parties.
 
                                       45
<PAGE>
                       PRINCIPAL AND SELLING STOCKHOLDERS
 
    The  following  table sets  forth  certain information  regarding beneficial
ownership of the Common Stock as of June 1, 1996, and as adjusted to reflect the
sale of shares offered hereby, by (i)  each stockholder known by the Company  to
be  a beneficial owner of  more than five percent of  the Common Stock, (ii) the
Selling Stockholder, (iii)  each of the  Company's directors, (iv)  each of  the
Named  Executive Officers  and (v) all  directors and executive  officers of the
Company as a  group. Except as  indicated in  the footnotes to  this table,  the
Company  believes that  the persons  and entities named  in the  table have sole
voting and investment power with respect to all shares of Common Stock shown  as
beneficially owned by them, subject to community property laws where applicable.
 
<TABLE>
<CAPTION>
                                                    SHARES BENEFICIALLY OWNED                   SHARES BENEFICIALLY OWNED
                                                       PRIOR TO OFFERING(1)                         AFTER OFFERING(1)
                                                   ----------------------------   NUMBER OF    ----------------------------
                                                      NUMBER OF                  SHARES BEING     NUMBER OF
NAME AND ADDRESS (2)                                   SHARES         PERCENT      OFFERED         SHARES         PERCENT
- -------------------------------------------------  ---------------  -----------  ------------  ---------------  -----------
<S>                                                <C>              <C>          <C>           <C>              <C>
CEO Venture Fund II..............................     1,843,944(3)       29.9%       268,203      1,575,741          18.7%
  1950 Old Gallows Road
  Vienna, Virginia 22182
George T. Jimenez................................     2,955,179(4)       46.3%             0      2,955,179          34.2%
S. Joseph Dorr...................................       830,626(5)       13.2%             0        830,626           9.7%
Thomas V. Russotto...............................       336,517(6)        5.4%             0        336,517           4.0%
Paul G. Casner, Jr...............................        32,520(7)       *                 0         32,520          *
Gary P. Golding..................................         3,165(8)       *                 0          3,165          *
Gilbert A. Wetzel................................        21,680(9)       *                 0         21,680          *
All directors and executive officers as a group
 (7 persons).....................................     4,179,687          62.8%             0      4,179,687          49.7%
</TABLE>
 
- ------------------------
 *  Less than 1% of the outstanding Common Stock.
 
(1)  The number  of shares  of Common Stock  outstanding prior  to this offering
    includes (i) 4,324,499  shares of  Common Stock  outstanding as  of June  1,
    1996,  (ii) 1,843,944 shares issuable by  the Company upon the conversion of
    all  outstanding  shares  of  Class  C  Preferred  Stock  which  will  occur
    automatically  upon completion of this offering and (iii) shares issuable by
    the Company pursuant to options held by the respective person or group which
    may be exercised within 60 days after June 1, 1996. Beneficial ownership  is
    determined  in accordance  with the  rules of  the Commission  and generally
    includes voting or investment power with respect to securities. All of these
    shares are subject to lock-up restrictions until 180 days after the date  of
    this Prospectus. See "Shares Eligible for Future Sale."
 
(2)  Unless otherwise  indicated, the address  is c/o  ACE*COMM Corporation, 209
    Perry Parkway, Gaithersburg, Maryland 20877.
 
(3) Includes 1,788,053 shares held by CEO  Venture Fund II of which 268,203  are
    being offered hereby, 26,363 shares held by William R. Newlin, 26,363 shares
    held  by James Colker and  3,165 shares held by  Gary P. Golding. Colker and
    Newlin Management Associations II ("CNMA II"), as the general partner of CEO
    Venture Fund II, exercises voting and  investment power with respect to  the
    1,788,053  shares held by CEO Venture Fund II. Messrs. Colker and Newlin, as
    managing general partners of CNMA II, exercise shared voting and  investment
    power  with respect  to these  shares and Mr.  Golding, E.R.  Yost, and G.F.
    Chatfield, as general partners of CNMA II, exercise shared investment  power
    with  respect to these shares. CNMA  II and Messrs. Colker, Newlin, Golding,
    Yost and Chatfield disclaim ownership of the shares held by CEO Venture Fund
    II other than to the extent of its or his individual partnership interest.
 
(4) Includes  220,356 shares  issuable upon  the exercise  of options  that  are
    exercisable within 60 days.
 
                                       46
<PAGE>
(5)  Includes  145,202 shares  issuable upon  the exercise  of options  that are
    exercisable within 60 days.
 
(6) Includes  83,815 shares  issuable  upon the  exercise  of options  that  are
    exercisable within 60 days.
 
(7)  Includes  21,680 shares  issuable  upon the  exercise  of options  that are
    exercisable within 60 days.
 
(8) Does not include 1,788,053 shares held  by CEO Venture Fund II of which  Mr.
    Golding is a general partner.
 
(9)  Includes  16,260 shares  issuable  upon the  exercise  of options  that are
    exercisable within 60 days.
 
                          DESCRIPTION OF CAPITAL STOCK
 
GENERAL
 
    Upon the completion  of this  offering, the  Company will  be authorized  to
issue 45,000,000 shares of Common Stock, $.01 par value, and 5,000,000 shares of
undesignated Preferred Stock, $.01 par value.
 
COMMON STOCK
 
    As  of June 1, 1996, there were 6,168,442 shares of Common Stock outstanding
held of record by  26 stockholders. As  of May 1, 1996,  options to purchase  an
aggregate  of 1,293,217  shares of Common  Stock were also  outstanding of which
options to purchase 1,130,617 shares  were then exercisable. See "Management  --
Amended and Restated Omnibus Stock Plan."
 
    The  holders  of Common  Stock are  entitled to  one vote  per share  on all
matters to be voted  on by shareholders and  have cumulative voting rights  with
respect  to the election of directors. Subject to the prior rights of holders of
Preferred Stock, if  any, the holders  of Common Stock  are entitled to  receive
such  dividends, if any,  as may be declared  from time to time  by the Board of
Directors  in  its  discretion  from  funds  legally  available  therefor.  Upon
liquidation  or dissolution of the  Company, the remainder of  the assets of the
Company will be  distributed ratably  among the  holders of  Common Stock  after
payment of liabilities and the liquidation preferences of any outstanding shares
of  Preferred Stock.  The Common Stock  has no preemptive  or other subscription
rights and  there  are  no  conversion rights  or  redemption  or  sinking  fund
provisions  with respect to such shares. All of the outstanding shares of Common
Stock are, and the shares  to be sold in this  offering will be, fully paid  and
nonassessable.
 
PREFERRED STOCK
 
    The Board of Directors has the authority to issue the Preferred Stock in one
or  more  series  and to  fix  the  price, rights,  preferences,  privileges and
restrictions thereof,  including  dividend rights,  dividend  rates,  conversion
rights,  voting  rights,  terms of  redemption,  redemption  prices, liquidation
preferences and the number of shares constituting a series or the designation of
such series, without any further vote  or action by the Company's  shareholders.
The  issuance  of  Preferred  Stock, while  providing  desirable  flexibility in
connection with possible acquisitions and  other corporate purposes, could  have
the  effect of  delaying, deferring  or preventing  a change  in control  of the
Company without further action by the shareholders and may adversely affect  the
market  price of,  and the  voting and  other rights  of, the  holders of Common
Stock. The Company has no current plans to issue any shares of Preferred Stock.
 
BUSINESS COMBINATIONS
 
    Maryland law prohibits certain "business combinations" (including a  merger,
consolidation,  share exchange, or, in  certain circumstances, an asset transfer
or issuance  or  reclassification  of  equity  securities)  between  a  Maryland
corporation  and an  Interested Stockholder.  "Interested Stockholders"  are all
persons (a)  who  beneficially own  10%  or more  of  the voting  power  of  the
corporation's shares or (b) an affiliate or associate of the corporation who, at
any  time  within the  two-year period  prior to  the date  in question,  was an
Interested Stockholder or an  affiliate or an  associate thereof. Such  business
 
                                       47
<PAGE>
combinations  are prohibited for five years after  the most recent date on which
the Interested  Stockholder became  an Interested  Stockholder. Thereafter,  any
such  business combination must be recommended by the board of directors of such
corporation and approved  by the affirmative  vote of  at least (a)  80% of  the
votes  entitled to be cast  by all holders of  voting shares of the corporation,
and (b) 66 2/3% of the votes entitled to be cast by all holders of voting shares
of the corporation other than voting shares held by the Interested  Stockholder,
or  an  affiliate or  associate  of the  Interested  Stockholder, with  whom the
business combination  is  to  be  effected,  unless,  among  other  things,  the
corporation's  stockholders receive a minimum price (as defined in Maryland law)
for their shares and the consideration is  received in cash or in the same  form
as  previously  paid  by  the  Interested  Stockholder  for  its  shares.  These
provisions of Maryland  law do not  apply, unless the  corporation's charter  or
by-laws provide otherwise, to a corporation that on July 1, 1983 had an existing
Interested  Stockholder, unless, at any time  thereafter, the Board of Directors
elects to be  subject to the  law. The  Company has adopted  such a  resolution,
which  has the effect of  making the law applicable  to the Company, except with
respect to certain business combinations  involving persons who were  Interested
Stockholders  as  of the  date of  this Prospectus,  or their  affiliates, which
include CEO Venture Fund II and George T. Jimenez. These provisions of  Maryland
law  would not  apply, however,  to business  combinations that  are approved or
exempted by the Board of Directors of the corporation prior to the time that any
other Interested  Stockholder  becomes  an Interested  Stockholder.  A  Maryland
corporation  may adopt an amendment to its charter electing not to be subject to
the special voting requirements of the foregoing legislation. Any such amendment
would have to be approved by the affirmative  vote of at least 80% of the  votes
entitled  to be cast  by all holders  of outstanding shares  of voting stock and
66 2/3% of the  votes entitled to  be cast by holders  of outstanding shares  of
voting  stock who are  not Interested Stockholders. The  Company has not adopted
such an amendment to its Charter.
 
CONTROL SHARE ACQUISITIONS
 
    Maryland law  provides  that  "control shares"  of  a  Maryland  corporation
acquired  in a "control share  acquisition" have no voting  rights except to the
extent approved by a vote of two-thirds of the votes entitled to be cast on  the
matter,  excluding  shares of  stock owned  by  the acquiror  or by  officers or
directors who are employees of the corporation. Control shares are voting shares
of stock which, if aggregated with all other shares of stock previously acquired
by such  a  person, would  entitle  the acquiror  to  exercise voting  power  in
electing  directors within one of the following  ranges of voting power: (a) 20%
or more but less than 33 1/3%; (b) 33 1/3% or more but less than a majority;  or
(c)  a majority  of all voting  power. Control  shares do not  include shares of
stock an acquiring person is entitled to  vote as a result of having  previously
obtained  stockholder approval.  A control  share acquisition  means, subject to
certain exceptions, the acquisition of, ownership of, or the power to direct the
exercise of voting power with respect to, control shares.
 
    A person who  has made or  proposes to make  a "control share  acquisition,"
upon  satisfaction  of  certain  conditions  (including  an  undertaking  to pay
expenses), may  compel the  board of  directors  to call  a special  meeting  of
stockholders to be held within 50 days of demand therefor to consider the voting
rights  of the shares. If no request for  a meeting is made, the corporation may
itself present the question at any stockholders' meeting.
 
    If voting rights are not approved at the meeting or if the acquiring  person
does  not deliver  an acquiring  person statement  as permitted  by the statute,
then, subject to certain conditions and limitations, the corporation may  redeem
any  or all  of the control  shares (except  those for which  voting rights have
previously been approved) for  fair value determined,  without regard to  voting
rights,  as of the date of the last  control share acquisition or of any meeting
of stockholders at which the voting rights of such shares are considered and not
approved. If voting rights for "control shares" are approved at a  stockholders'
meeting  and the  acquiror becomes  entitled to  vote a  majority of  the shares
entitled to vote, all other stockholders may exercise appraisal rights. The fair
value of the stock as determined for  purposes of such appraisal rights may  not
be  less than the highest price per share paid in the control share acquisition,
and certain limitations and restrictions otherwise applicable to the exercise of
dissenters' rights do not apply in the context of a "control share acquisition."
 
                                       48
<PAGE>
    The control share acquisition statute does not apply to stock acquired in  a
merger,  consolidation or stock  exchange if the  corporation is a  party to the
transaction, or to acquisitions previously  approved or exempted by a  provision
in  the  charter  or by-laws  of  the  corporation. The  Company  has  adopted a
provision in  its  Charter exempting  acquisitions  by George  Jimenez  and  his
respective  associates  provided any  such acquisition  does  not cause  them to
acquire more than 49.9% of the outstanding Common Stock in the aggregate.
 
TRANSFER AGENT AND REGISTRAR
 
    The transfer agent and registrar for the Common Stock  is
    .
 
                     CERTAIN CHARTER AND BY-LAW PROVISIONS
 
    The  Company's Charter and by-laws will be amended as of the closing of this
Offering and, as  a result of  such amendment, will  contain several  provisions
that  may make  the acquisition of  control of the  Company by means  of a proxy
fight, open market  purchases, tender  offer, or otherwise  more difficult.  The
following  is a summary of certain of these provisions. The forms of Charter and
By-laws, as amended, are filed as  exhibits to the Registration Statement  filed
with  the  Commission of  which this  Prospectus  is a  part, and  the following
summary is qualified in its entirety by reference to such documents.
 
NUMBER OF DIRECTORS
 
    The Charter and By-laws provide that the number of directors shall be  fixed
from  time to time  by resolution adopted by  a majority of  the entire Board of
Directors, but may  not consist of  fewer than  three or such  lesser number  of
stockholders,  nor more than 11 members. The  size of the Board of Directors has
initially been set at five members.
 
CLASSIFIED BOARD OF DIRECTORS
 
    The Charter divides  the Board  of Directors  into three  classes, with  one
class  having a term of one year, one class  having a term of two years, and one
class having a  term of  three years. Each  class is  to be as  nearly equal  in
number  as possible. At each annual meeting of stockholders, commencing with the
annual meeting of stockholders to be held in 1997, directors will be elected  to
succeed  those  directors  whose  terms have  expired,  and  each  newly elected
director will serve for a three-year term.
 
    The classification of directors and the provisions in the Charter that limit
the ability of  stockholders to  increase the size  of the  Board of  Directors,
together  with  the provisions  in the  Charter described  below that  limit the
ability of  stockholders  to remove  directors  and that  permit  the  remaining
directors  to fill any vacancies on the Board, will have the effect of making it
more difficult  for stockholders  to  change the  composition  of the  Board  of
Directors.  As a  result, at  least two annual  meetings of  stockholders may be
required for the stockholders to change a majority of the directors, whether  or
not  a change in the  Board of Directors would be  beneficial to the Company and
its stockholders and  whether or not  a majority of  the Company's  stockholders
believes that such a change would be desirable.
 
REMOVAL OF DIRECTORS AND FILLING VACANCIES
 
    The  Charter  and  By-laws  provide  that  a  director  may  be  removed  by
stockholders only "for cause" and with the approval of the holders of 80% of the
total voting power of all outstanding securities of the Company then entitled to
vote generally in the election of  directors, voting together as a single  class
at a special meeting of stockholders called for that purpose. (Article VI of the
Charter; Section 6).
 
    The  Charter  and  By-laws  provide  that  all  vacancies  on  the  Board of
Directors,  including  those  resulting  from  an  increase  in  the  number  of
directors, may be filled solely by a majority of the remaining directors even if
they  do not  constitute a  quorum. If  the vacancy  occurs as  a result  of the
 
                                       49
<PAGE>
removal of a director, the stockholders may elect a successor at the meeting  at
which  such removal occurs. If the  entire Board becomes vacant, any stockholder
may call a special meeting in order  to elect directors. (Article II, Section  7
of the By-laws).
 
ADVANCE NOTICE REQUIREMENTS FOR STOCKHOLDER PROPOSALS AND DIRECTOR NOMINATIONS
 
    The  By-laws establish advance notice  procedures with regard to stockholder
proposals and the nomination, other than by or at the direction of the Board  of
Directors  or  a committee  thereof, of  candidates  for election  as directors.
(Sections 11 and  12). These  procedures require  that a  notice of  stockholder
proposals  and  stockholder nominations  for the  election  of directors  at any
meeting of  stockholders  must  be  in  writing,  containing  certain  specified
information  and received by the  Secretary of the Company  not less than 20 nor
more than 30 days prior to the meeting (or if less than 30 days' notice or prior
public disclosure of the date of the meeting is given, the notice of stockholder
proposals or nominations must be in writing and received by the Secretary of the
Company no later than the close of  business on the tenth day following the  day
on which notice of the meeting was mailed or public disclosure thereof was made,
whichever  occurs  first).  The Company  may  reject a  stockholder  proposal or
nomination that is not made in accordance with such procedures.
 
LIMITATIONS ON CALLING STOCKHOLDER MEETINGS
 
    The Charter and By-laws provide that special meetings of stockholders can be
called only by the Chairman of the Board of Directors, the President, the  Board
of  Directors, or by the Secretary at the  request of holders of at least 25% of
all votes entitled  to be cast.  (Article I,  Section 2 of  the By-laws).  These
provisions  may  have  the effect  of  delaying consideration  of  a stockholder
proposal until the next annual meeting unless a special meeting is called by the
Board of Directors, the Chairman of  the Board, the President, or the  Secretary
of the Company upon the request of holders of a sufficient number of shares.
 
AMENDMENT OF CERTAIN PROVISIONS OF THE CHARTER AND BY-LAWS
 
    The Charter of the Company provides that the affirmative vote of the holders
of at least 80% of the aggregate combined voting power of all classes of capital
stock  entitled  to vote  thereon, voting  as  one class,  is required  to amend
certain provisions of the  Charter, including those  provisions relating to  the
number,  election and term of directors; the removal of Directors; the amendment
of the by-laws; the  provision governing applicability  of the Maryland  Control
Share  Act  (Section 3-702  of the  Maryland General  Corporation Law);  and the
supermajority voting requirements in the Charter. (Article VII, Section 1).  The
Charter  further provides that Board of Directors shall have the exclusive right
to make, alter,  amend or repeal  the By-laws. (Article  VII, Section 5).  These
requirements  will have  the effect  of making  more difficult  any amendment by
stockholders, even if a majority of the Company's stockholders believe that such
amendment would be in their best interests.
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
    Prior to this offering, there has been no market for the Common Stock of the
Company. Sales  of substantial  shares  of Common  Stock  in the  public  market
following  this offering, or  the perception that such  sales could occur, could
adversely affect the market  price of the Common  Stock prevailing from time  to
time  and could impair the Company's future  ability to raise capital through an
offering of its  equity securities.  See "Risk  Factors --  Shares Eligible  for
Future Sale."
 
    Upon  completion  of  this  offering, the  Company  will  have approximately
8,418,442 shares  of  Common Stock  outstanding  (assuming no  exercise  of  the
Underwriters' over-allotment option.) Of these shares, the 2,518,203 shares sold
in this offering will be freely transferable without restriction or registration
under  the  Securities  Act, except  for  any  shares purchased  by  an existing
"affiliate" of the Company, as that term is defined under the Securities Act (an
"Affiliate"), which shares will be subject to the resale limitations of Rule 144
adopted under the Securities Act. The remaining 5,900,239 outstanding shares  of
Common  Stock  which were  issued  by the  Company  in private  transactions not
involving a public offering  (and any shares issued  upon the exercise of  stock
options  granted pursuant to the  Stock Plan and the  Directors Stock Plan), are
"restricted securities" for purposes of Rule 144
 
                                       50
<PAGE>
and may not be resold  in a public distribution,  except in compliance with  the
registration  requirements of the Securities Act,  pursuant to a valid exemption
from registration  or  pursuant  to  Rule  144.  Of  such  shares,  and  without
consideration  of the  contractual restrictions described  below, 350,440 shares
would be available for immediate sale  in the public market without  restriction
pursuant  to Rule 144(k) and 5,153,289  additional shares would be available for
immediate sale  subject  to  compliance  with  the  restrictions  of  Rule  144.
Beginning  90 days after the date  of this Prospectus, and without consideration
of the contractual restrictions described below, 192,708 additional shares would
be eligible for sale without restrictions in reliance upon Rule 701  promulgated
under  Securities Act and  111,662 additional shares would  be eligible for sale
subject to compliance with  the restrictions of Rule  144. The remaining  92,140
restricted  shares  will not  be  transferable pursuant  to  Rule 144  until the
expiration of their respective two year holding periods.
 
    The holders of 5,727,774 shares of Common Stock in the aggregate,  including
each  officer and  director of  the Company, have  agreed not  to offer, pledge,
sell, contract to sell,  sell any option or  contract to purchase, purchase  any
option  or contract to sell, grant any  option, right or warrant to purchase, or
otherwise transfer or dispose of, directly  or indirectly, any shares of  Common
Stock  or any  securities convertible  into or  exercisable or  exchangeable for
Common Stock, or  enter into any  swap or similar  agreement that transfers,  in
whole  or in  part, the economic  risk of ownership  of the Common  Stock, for a
period of 180 days after the date of this Prospectus, without the prior  written
consent  of Furman Selz LLC. Furman Selz LLC  may, in its sole discretion and at
any time without notice, waive the lock-up  restrictions as to all or a  portion
of  the securities subject to lock-up  agreements. Furman Selz LLC currently has
no  plans  to  grant  any  such  waivers.  As  a  result  of  these  contractual
restrictions  and the  provisions of Rules  144(k), 144 and  701, the restricted
shares will be available for sale in  the public market as follows: (i)  107,424
shares  will be eligible for immediate sale on the date of this Prospectus, (ii)
65,041 shares  will  be  eligible for  sale  90  days after  the  date  of  this
Prospectus,  (iii) 5,635,634 shares will be eligible for sale 180 days after the
date of this Prospectus upon expiration  of lock-up agreements, and (iv)  92,140
shares  will become eligible for sale in  the public market pursuant to Rule 144
upon the expiration of their respective two year holding periods.
 
    In general, under Rule 144 as  currently in effect, beginning 90 days  after
the  date of this Prospectus, a person  (or persons whose shares are aggregated)
who has  beneficially  owned  restricted  securities  for  at  least  two  years
(including  the holding  period of  any prior owner  except an  affiliate of the
Company) would be  entitled to sell  within any three-month  period a number  of
shares  that does not  exceed the greater of:  (i) one percent  of the number of
shares of Common Stock then  outstanding (which will equal approximately  84,184
shares  immediately after  this offering);  or (ii)  the average  weekly trading
volume of the Common Stock during  the four calendar weeks preceding such  sale,
subject  to the filing of a Form 144 with respect to such sale. Sales under Rule
144  are  also  subject  to  certain  manner  of  sale  provisions  and   notice
requirements  and to  the availability of  current public  information about the
Company. Under Rule 144(k), a person who is not deemed to have been an Affiliate
at any  time during  the  90 days  immediately preceding  a  sale, and  who  has
beneficially  owned the  shares proposed  to be  sold for  at least  three years
(including the  holding period  of  any prior  owner  except an  Affiliate),  is
entitled  to sell such shares without complying  with the manner of sale, public
information, volume limitation or notice provisions of Rule 144. Subject to  the
contractual  restrictions described above, "144(k) shares" may therefore be sold
immediately  upon  the  completion  of  this  offering.  Persons  deemed  to  be
Affiliates  must always  sell pursuant  to Rule  144, even  after the applicable
holding periods have been satisfied.
 
    The Commission  has recently  proposed  amendments to  Rule 144  that  would
permit resales of restricted securities after a one-year, rather than a two-year
holding period, subject to compliance with the other provisions of Rule 144, and
would permit resale of restricted securities by non-Affiliates under Rule 144(k)
after  a two-year,  rather than  a three-year  holding period.  If adopted, such
amendments could result in resales of restricted securities sooner than would be
the case under Rule 144 as currently in effect.
 
                                       51
<PAGE>
    Subject to  certain  limitations  on  the  aggregate  offering  price  of  a
transaction  and other conditions, Rule  701 may be relied  upon with respect to
the resale of securities originally purchased from the Company by its employees,
directors, officers,  consultants  or advisors  prior  to the  date  the  issuer
becomes  subject to the  reporting requirements of the  Exchange Act pursuant to
written  compensatory  benefit  plans  or  written  contracts  relating  to  the
compensation  of such  persons. In addition,  the Commission  has indicated that
Rule 701 will  apply to typical  stock options  granted by an  issuer before  it
becomes  subject to the  reporting requirements of the  Exchange Act, along with
the shares acquired upon exercise of such options (including exercises after the
date of  this  Prospectus).  Securities  issued in  reliance  on  Rule  701  are
restricted  securities and,  subject to  the contractual  restrictions described
above, beginning 90  days after  the date  of this  Prospectus, may  be sold  by
persons  other than Affiliates subject only to  the manner of sale provisions of
Rule 144 and by Affiliates under  Rule 144 without compliance with its  two-year
minimum holding period requirements.
 
    At  June 1, 1996, options to purchase  1,276,957 shares of Common Stock were
outstanding, of which  options to purchase  approximately 1,114,357 shares  were
then vested and exercisable. Shortly after this offering, the Company intends to
file  registration  statements on  Form S-8  under  the Securities  Act covering
shares of Common Stock  reserved for issuance under  the Company's stock  plans.
See  "Management -- Amended  and Restated Omnibus Stock  Option Plan." Shares of
Common Stock  issued  upon exercise  of  options under  the  Forms S-8  will  be
available  for sale in the public market, subject to Rule 144 manner of sale and
volume limitations in  the case  of Affiliates  and subject  to the  contractual
restrictions  described  above. Beginning  180  days after  the  Effective Date,
approximately 889,508 shares issuable upon the exercise of vested stock  options
will  become  eligible  for sale  in  the  public market,  if  such  options are
exercised.
 
REGISTRATION RIGHTS
 
    After this offering, the  holders of 1,575,740 shares  of Common Stock  (the
"Registrable Securities") will be entitled to certain rights with respect to the
registration  of such shares  under the Securities  Act. Under the  terms of the
agreement between the Company and the holders of such Registrable Securities, if
the Company proposes to register any of its securities under the Securities Act,
either for  its  own  account or  for  the  account of  other  security  holders
exercising  registration rights,  such holders  are entitled  to notice  of such
registration and are entitled  to include shares of  such Common Stock  therein.
Additionally,  beginning six months after the  date of this offering, holders of
the Registrable  Securities are  also entitled  to certain  demand  registration
rights  pursuant to which  they may require  the Company to  file a registration
statement under the Securities Act at  its expense with respect to their  shares
of  Common Stock, and the Company is required  to use its best efforts to effect
such registration.  Further,  the  holders of  the  Registrable  Securities  may
require  the Company to file additional registration statements on Form S-3. All
of these registration rights are subject to certain conditions and  limitations,
among  them the right of the underwriters of  an offering to limit the number of
shares included in such registration.
 
                                       52
<PAGE>
                                  UNDERWRITING
 
    Each of the Underwriters named below (the "Underwriters"), for which  Furman
Selz  LLC, Oppenheimer  & Co.,  Inc. and  Rodman &  Renshaw, Inc.  are acting as
representatives (the "Representatives"),  has severally agreed,  subject to  the
terms and conditions of the Underwriting Agreement, to purchase from the Company
and  the Selling Stockholder,  and the Company and  the Selling Stockholder have
agreed to sell to each of the Underwriters, the number of shares of Common Stock
set forth opposite its name below:
 
<TABLE>
<CAPTION>
                                                                                              NUMBER OF
UNDERWRITERS                                                                                   SHARES
- -------------------------------------------------------------------------------------------  -----------
<S>                                                                                          <C>
Furman Selz LLC............................................................................
Oppenheimer & Co., Inc. ...................................................................
Rodman & Renshaw, Inc. ....................................................................
 
                                                                                             -----------
    Total..................................................................................    2,518,203
                                                                                             -----------
                                                                                             -----------
</TABLE>
 
    The Underwriting Agreement provides that the obligations of the Underwriters
to purchase the shares of Common Stock listed above are subject to the  approval
of   certain  legal  matters  by  counsel  and  various  other  conditions.  The
Underwriting Agreement  also provides  that the  Underwriters are  committed  to
purchase  all of the shares of Common Stock offered hereby, if any are purchased
(without  consideration  of  any  shares  that  may  be  purchased  through  the
Underwriters' over-allotment option).
 
    The  Representatives have  advised the  Company and  the Selling Stockholder
that the Underwriters propose to offer the shares of Common Stock to the  public
initially at the public offering price set forth on the cover of this Prospectus
and  to certain dealers at such price less a concession not in excess of $
per share. The Underwriters may allow, and such selected dealers may reallow,  a
concession not in excess of $      per share to certain other dealers. After the
initial  public  offering of  the shares,  the public  offering price  and other
selling terms may be changed by the Representatives.
 
    Prior to the offering made hereby, there  has been no public market for  the
Common  Stock. Accordingly,  the initial  public offering  price for  the Common
Stock  will  be  determined  by  negotiation  among  the  Company,  the  Selling
Stockholder  and the Representatives. Among the factors to be considered are the
Company's results of  operations and current  financial condition, estimates  of
the  business  potential  and  prospects  of the  Company,  the  market  for the
Company's products, the experience of the Company's management, the economics of
the industry in general, the general condition of the equities market and  other
relevant  factors. There can be no assurance that any active trading market will
develop for the Common Stock  or as to the price  at which the Common Stock  may
trade  in the public  market from time  to time subsequent  to the offering made
hereby.
 
    The Company has granted the  Underwriters an option, exercisable during  the
30-day  period after  the date  of this  Prospectus, to  purchase up  to 377,730
additional shares of Common Stock at the public offering price set forth on  the
cover  page of this Prospectus, less  underwriting discounts and commissions. To
the extent the Underwriters exercise this  option, each Underwriter will have  a
firm  commitment,  subject to  certain conditions,  to  purchase such  number of
additional shares  of Common  Stock as  is proportionate  to such  Underwriter's
initial  commitment to  purchase shares from  the Company.  The Underwriters may
exercise such  option  solely to  cover  over-allotments, if  any,  incurred  in
connection with the sale of shares of Common Stock offered hereby.
 
                                       53
<PAGE>
    The  Company  and  the  Selling Stockholder  have  agreed  to  indemnify the
Underwriters  against  certain  liabilities,  including  liabilities  under  the
Securities  Act,  or to  contribute  to payments  that  the Underwriters  may be
required to make in respect thereof.
 
    The Company  and the  holders of  5,635,634 shares  of Common  Stock in  the
aggregate,  including each  officer and  director of  the Company,  have agreed,
subject to certain exceptions, not to offer, sell, contract to sell or otherwise
dispose of any shares of Common Stock or securities exchangeable or  exercisable
for  or convertible into shares of Common Stock  (other than, in the case of the
Company, the  granting of  options  pursuant to  the  Company's Stock  Plan  and
Directors Stock Plan) for a period of 180 days from the date of the Underwriting
Agreement, without the prior written consent of Furman Selz LLC.
 
    The  Representatives have informed  the Company and  the Selling Stockholder
that the Underwriters do not intend to confirm sales to any accounts over  which
they exercise discretionary authority.
 
    The  Company  has applied  for listing  of  the Common  Stock on  the Nasdaq
National Market under the symbol "ACEC."
 
                                 LEGAL MATTERS
 
    The validity of the Common Stock offered hereby will be passed upon for  the
Company  by its counsel, Venable, Baetjer  and Howard, LLP, Baltimore, Maryland.
Certain legal matters in connection with  this offering will be passed upon  for
the Underwriters by Stroock & Stroock & Lavan, New York, New York.
 
                                    EXPERTS
 
    The  financial statements as of June 30, 1995  and 1994, and for each of the
three years in the period ended June  30, 1995, included in the Prospectus  have
been  so included in reliance on the report of Price Waterhouse LLP, independent
accountants, given on  the authority  of said firm  as experts  in auditing  and
accounting.
 
                             ADDITIONAL INFORMATION
 
    A Registration Statement on Form S-1, including amendments thereto, relating
to  the  Common Stock  offered hereby  has been  filed by  the Company  with the
Securities and Exchange  Commission, Washington, D.C.  This Prospectus does  not
contain  all of the information set forth  in the Registration Statement and the
exhibits and schedules thereto.  Statements contained in  this Prospectus as  to
the  contents of any contract or other  document referred to are not necessarily
complete and in each instance reference is made to the copy of such contract  or
other  document filed  as an  exhibit to  the Registration  Statement, each such
statement being  qualified  in  all  respects by  such  reference.  For  further
information  with respect  to the Company  and the Common  Stock offered hereby,
reference is made to such Registration Statement, exhibits and schedules. A copy
of the Registration Statement may be  inspected by anyone without charge at  the
Commission's  principal  office located  at  450 Fifth  Street,  N.W., Judiciary
Plaza, Washington, D.C. 20549, the Northeast Regional Office located at 7  World
Trade  Center, 13th Floor,  New York, New  York 10048, and  the Midwest Regional
Office located at Northwestern Atrium Center, 500 West Madison Street,  Chicago,
Illinois  60661-2511, and copies of all or any part thereof may be obtained from
the Public Reference Branch of the  Commission upon the payment of certain  fees
prescribed  by the  Commission. In addition,  the Registration  Statement may be
accessed electronically at the Commission's site  on the World Wide Web  located
at http://www.sec.gov.
 
    The  Company currently  is not a  reporting company. The  Company intends to
furnish  to  its  stockholders  annual  reports  containing  audited   financial
statements   and  quarterly  reports   containing  unaudited  interim  financial
information for each  of the first  three quarters  of each fiscal  year of  the
Company.
 
                                       54
<PAGE>
                               GLOSSARY OF TERMS
 
<TABLE>
<S>                                   <C>
Asynchronous Transfer Mode
(ATM)...............................  A  recently commercialized switching and transmission
                                      technology that is one of  a general class of  packet
                                      technologies  that relay traffic by way of an address
                                      contained within the  first five bits  of a  standard
                                      fifty-three bit-long packet or cell. ATM-based packet
                                      transport   was   specifically  developed   to  allow
                                      switching and transmission of  mixed voice, data  and
                                      video   (sometimes   referred  to   as  "multi-media"
                                      information) at varying rates. The ATM format can  be
                                      used by many different information systems, including
                                      LANs.
Bandwidth...........................  The  range of  frequencies or  bit rates  that can be
                                      transmitted   by   a   communications   channel,    a
                                      transmission facility or a transmission medium.
Broadband...........................  Broadband  communications systems  can transmit large
                                      quantities of voice, data and video by way of digital
                                      or   analog    signals.   Examples    of    broadband
                                      communication   systems  include   DS-3  fiber  optic
                                      systems, which  can transmit  672 simultaneous  voice
                                      conversations,  or  a  broadcast  television  station
                                      signal, that  transmits  high  resolution  audio  and
                                      video  signals into the  home. Broadband connectivity
                                      is  also   an  essential   element  for   interactive
                                      multimedia applications.
Carrier.............................  A company providing telephone services.
Central Office......................  The switching centers or central switching facilities
                                      of the local telephone companies.
CENTREX.............................  CENTREX  is a service that offers features similar to
                                      those of a Private Branch Exchange (PBX), except  the
                                      equipment  is located  at the  carrier's premises and
                                      not at the premises  of the customer. These  features
                                      include  direct dialing within  a given phone system,
                                      direct  dialing  of  incoming  calls,  and  automatic
                                      identification  of outbound calls.  This is a service
                                      that local telephone companies can provide to a  wide
                                      range  of customers who  do not have  the size or the
                                      funds to support their own on-site PBX.
Digital.............................  A method  of  storing,  processing  and  transmitting
                                      information through the use of distinct electronic or
                                      optical  pulses that represent the binary code digits
                                      0  and   1.   Digital  transmission   and   switching
                                      technologies  employ  a sequence  of these  pulses to
                                      represent information as opposed to the  continuously
                                      variable  analog  signal.  Digital  transmission  and
                                      switching technologies offer a threefold  improvement
                                      in   speed  and  capacity   over  analog  techniques,
                                      allowing  much  more  efficient  and   cost-effective
                                      transmission of voice, video and data.
Fiberoptic..........................  A  technology  in which  light  is used  to transport
                                      information from  one  point  to  another.  Fiber  is
                                      immune  to electrical  interference and environmental
                                      factors  that  affect  copper  wiring  and  satellite
                                      transmission.
</TABLE>
 
                                       55
<PAGE>
<TABLE>
<S>                                   <C>
Frame Relay.........................  Frame  relay is  a high  speed data  packet switching
                                      service used  to  transmit  data  between  computers.
                                      Frame  relay supports data  units of variable lengths
                                      at access  speeds ranging  from  56 kilobits  to  1.5
                                      megabits.  This service is appropriate for connecting
                                      LANs, but  is not  appropriate  for voice  and  video
                                      applications  due  to the  variable delays  which can
                                      occur. Frame relay  was designed to  operate at  high
                                      speed on modern fiber optic networks.
Graphical User Interface............  A   means  of   communicating  with   a  computer  by
                                      manipulating icons and windows rather than using text
                                      commands.
Hybrid Fiber Coaxial................  A telecommunications network  composed of both  fiber
                                      and  coaxial cable,  typically used  to deliver video
                                      and/or voice services to residences.
ISO.................................  International Standards Organization, an
                                      international standards group that is concerned  with
                                      defining standards for data communication and network
                                      management.    Committees   throughout    the   world
                                      contribute to the ISO standards set forth.
Internet............................  The  global  system  of  networks  interconnected  by
                                      TCP/IP (and IP-related protocols), which include over
                                      30 million users from the private sector, educational
                                      institutions, government, nonprofits, and
                                      individuals.  Internet users  gain access  to e-mail,
                                      file transfer,  remote  log-in, gopher,  news,  World
                                      Wide Web, and other related services.
Local Area Networks (LANs)..........  The  interconnection of computers  for the purpose of
                                      sharing files, programs and  various devices such  as
                                      work  stations, printers and  high-speed modems. LANs
                                      may include dedicated computers or file servers  that
                                      provide  a  centralized  source of  shared  files and
                                      programs.
Local Exchange Carrier..............  A company providing local telephone services.
Local Exchange Carrier Lines........  Local  Exchange  Carrier   or  local  phone   company
                                      telephone lines used to supply telephone service to a
                                      location. These lines are needed by all organizations
                                      to handle local telephone traffic.
Object-Oriented.....................  A  form of software development  that models the real
                                      world through representation of "objects" or  systems
                                      that  contain data as well  as instructions that work
                                      upon that data.
Personal Communications Service
(PCS)...............................  A type of wireless telephone system that uses  light,
                                      inexpensive  handheld sets  and communicates  via low
                                      power antennas.
Protocols...........................  A formal set of standards governing the establishment
                                      of a communications link  and controlling the  format
                                      and timing of transmissions between two devices.
Request for Proposal (RFP)..........  The  process of compiling a set of specifications for
                                      any  procurement  (telephone  system,  telemanagement
                                      system,  voice mail,  etc.) to clearly  define all of
                                      the requirements of
</TABLE>
 
                                       56
<PAGE>
<TABLE>
<S>                                   <C>
                                      said procurement. The RFP is then distributed to  all
                                      prospective vendors, so they may respond in detail to
                                      the  requirements  and  provide a  quotation  for the
                                      project as defined  within the RFP.  The goal of  the
                                      RFP  process  is  to  procure  the  item(s)  that are
                                      detailed within the RFP.
Simple Network Management Protocol
(SNMP)..............................  A   standard   protocol   that   gathers   management
                                      information from network devices and provides a means
                                      to set and monitor configuration parameters.
Switch..............................  A computer that accepts instructions from a caller in
                                      the form of a telephone number. Like an address on an
                                      envelope,  the numbers tell the switch where to route
                                      the call.  The switch  opens  or closes  circuits  or
                                      selects   the  paths  or  circuits  to  be  used  for
                                      transmission of information.  Switching is a  process
                                      of  interconnecting circuits  to form  a transmission
                                      path between users. Switches allow local carriers  to
                                      connect  calls directly  to their  destination, while
                                      providing advanced features and recording  connection
                                      information for future billing.
Telecommunications Service
Provider............................  Carriers    and   operators    of   networks   within
                                      enterprises.
X.25................................  A protocol  that  defines the  connection  between  a
                                      terminal  and the public packet-switching network for
                                      computer to computer communications.
</TABLE>
 
                                       57
<PAGE>
                              ACE*COMM CORPORATION
                                    INDEX TO
                              FINANCIAL STATEMENTS
 
<TABLE>
<S>                                                                                     <C>
Report of Independent Accountants.....................................................         F-2
 
Balance Sheets at June 30, 1994 and 1995 and at March 31, 1996 (Unaudited)............         F-3
 
Statements of Operations for the years ended June 30, 1993, 1994 and 1995 and for the
 nine months ended March 31, 1995 (Unaudited) and March 31, 1996 (Unaudited)..........         F-4
 
Statements of Stockholders' Equity (Deficit) for the years ended June 30, 1993, 1994
 and 1995 and for the nine months ended March 31, 1996 (Unaudited)....................         F-5
 
Statements of Cash Flows for the years ended June 30, 1993, 1994 and 1995 and for the
 nine months ended March 31, 1995 (Unaudited) and March 31, 1996 (Unaudited)..........         F-6
 
Notes to Financial Statements.........................................................         F-7
</TABLE>
 
                                      F-1
<PAGE>
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Board of Directors and Stockholders of
  ACE*COMM Corporation
 
The  recapitalization described in  Note 11 to the  financial statements has not
been consummated as of June  24, 1996. When it is  consummated, we will be in  a
position to furnish the following report:
 
    "In  our opinion, the accompanying balance sheets and the related statements
    of operations,  of changes  in stockholders'  equity (deficit)  and of  cash
    flows  present fairly, in  all material respects,  the financial position of
    ACE*COMM Corporation  at June  30, 1994  and 1995,  and the  results of  its
    operations  and its  cash flows for  each of  the three years  in the period
    ended June  30,  1995,  in conformity  with  generally  accepted  accounting
    principles.  These  financial  statements  are  the  responsibility  of  the
    Company's management; our responsibility is  to express an opinion on  these
    financial  statements based on our audits.  We conducted our audits of these
    statements in accordance  with generally accepted  auditing standards  which
    require  that we plan  and perform the audit  to obtain reasonable assurance
    about whether the financial statements are free of material misstatement. An
    audit includes examining, on a  test basis, evidence supporting the  amounts
    and  disclosures  in  the  financial  statements,  assessing  the accounting
    principles used and significant estimates made by management, and evaluating
    the overall financial  statement presentation.  We believe  that our  audits
    provide a reasonable basis for the opinion expressed above."
 
    PRICE WATERHOUSE LLP
 
    Washington, DC
    December 8, 1995
    except as to Note 5, which is as of
    January 25, 1996
 
                                      F-2
<PAGE>
                                ACE*COMM CORPORATION
                                   BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                                 JUNE 30,
                                                          ----------------------
                                                             1994        1995
                                                          ----------  ----------
                                                                                  MARCH 31,
                                                                                     1996
                                                                                  ----------
                                                                                  (UNAUDITED)
                                           ASSETS
<S>                                                       <C>         <C>         <C>
Current assets:
  Cash..................................................  $  147,310  $  189,903  $    2,407
  Accounts receivable, less allowance for doubtful
   accounts of $10,000..................................   4,364,666   4,702,740   4,916,683
  Inventories...........................................     798,797     964,501   1,360,289
  Prepaid expenses and other............................     135,135     130,392     248,168
                                                          ----------  ----------  ----------
Total current assets....................................   5,445,908   5,987,536   6,527,547
Property and equipment, net.............................     889,817   1,168,648   1,124,403
Capitalized software development costs, net.............     946,318   1,007,910   1,097,480
Other assets............................................     125,199     129,243     111,766
                                                          ----------  ----------  ----------
Total assets............................................  $7,407,242  $8,293,337  $8,861,196
                                                          ----------  ----------  ----------
                                                          ----------  ----------  ----------
 
   LIABILITIES, MANDATORILY REDEEMABLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT)
 
Current liabilities:
  Current borrowings....................................  $2,077,787  $4,301,544  $   41,667
  Accounts payable......................................   1,414,886   1,245,757   2,058,212
  Accrued expenses......................................     100,651     290,905     461,948
  Accrued compensation..................................     481,920     430,596     681,125
  Officer loan..........................................      95,833      95,833      78,572
  Deferred revenue......................................     685,300     997,077     617,810
                                                          ----------  ----------  ----------
Total current liabilities...............................   4,856,377   7,361,712   3,939,334
                                                          ----------  ----------  ----------
Noncurrent borrowings...................................      86,117      52,083   3,228,440
                                                          ----------  ----------  ----------
Total liabilities.......................................   4,942,494   7,413,795   7,167,774
                                                          ----------  ----------  ----------
Mandatorily redeemable Class C Preferred Stock, $5.14
 par value, 340,211 shares authorized, issued and
 outstanding............................................   1,981,839   2,121,733   2,226,654
                                                          ----------  ----------  ----------
Commitments
Stockholders' equity (deficit):
  Class B Preferred Stock, $1.00 par value, 1,000 shares
   authorized, issued and outstanding...................       1,000       1,000       1,000
  Common stock, $.01 par value, 45,000,000 shares
   authorized, 3,927,988, 3,971,348 and 4,230,993 shares
   issued and outstanding...............................      39,280      39,713      42,310
  Additional paid-in capital............................     440,121     313,134     348,571
  Stock subscriptions receivable........................      --          (5,900)   (113,633)
  Retained earnings (accumulated deficit)...............       2,508  (1,590,138)   (811,480)
                                                          ----------  ----------  ----------
Total stockholders' equity (deficit)....................     482,909  (1,242,191)   (533,232)
                                                          ----------  ----------  ----------
Total liabilities, mandatorily redeemable preferred
 stock and stockholders' equity (deficit)...............  $7,407,242  $8,293,337  $8,861,196
                                                          ----------  ----------  ----------
                                                          ----------  ----------  ----------
</TABLE>
 
                  See accompanying notes to financial statements.
 
                                      F-3
<PAGE>
 
                                ACE*COMM CORPORATION
                              STATEMENTS OF OPERATIONS
 
<TABLE>
<CAPTION>
                                                                         NINE MONTHS ENDED MARCH
                                          YEARS ENDED JUNE 30,                     31,
                                  -------------------------------------  ------------------------
                                     1993         1994         1995         1995         1996
                                  -----------  -----------  -----------  -----------  -----------
                                                                               (UNAUDITED)
<S>                               <C>          <C>          <C>          <C>          <C>
Revenue -- products and
 services.......................  $11,136,806  $14,522,681  $12,415,331  $ 9,237,692  $13,111,225
                                  -----------  -----------  -----------  -----------  -----------
Costs and operating expenses:
  Cost of products and
   services.....................    5,869,081    7,674,999    6,579,504    4,757,644    6,671,913
  Selling, general and
   administrative...............    4,065,494    5,472,776    6,048,700    4,675,437    4,744,241
  Research and development......      779,823      572,652    1,044,968      711,547      630,808
                                  -----------  -----------  -----------  -----------  -----------
Total costs and operating
 expenses.......................   10,714,398   13,720,427   13,673,172   10,144,628   12,046,962
                                  -----------  -----------  -----------  -----------  -----------
Income (loss) from operations...      422,408      802,254   (1,257,841)    (906,936)   1,064,263
Interest income.................       73,577        3,455      --           --           --
Interest expense................     (126,837)    (159,993)    (334,805)    (228,619)    (285,605)
                                  -----------  -----------  -----------  -----------  -----------
Income (loss) before income
 taxes and extraordinary item...      369,148      645,716   (1,592,646)  (1,135,555)     778,658
Income taxes....................     (151,000)     --           --           --           --
                                  -----------  -----------  -----------  -----------  -----------
Income (loss) before
 extraordinary item.............      218,148      645,716   (1,592,646)  (1,135,555)     778,658
                                  -----------  -----------  -----------  -----------  -----------
Extraordinary item -- tax
 benefit of net operating loss
 carryforwards..................      151,000      --           --           --           --
                                  -----------  -----------  -----------  -----------  -----------
Net income (loss)...............  $   369,148  $   645,716  $(1,592,646) $(1,135,555) $   778,658
                                  -----------  -----------  -----------  -----------  -----------
                                  -----------  -----------  -----------  -----------  -----------
Pro forma (loss) income per
 share (unaudited)..............                            $      (.26)              $      0.12
                                                            -----------               -----------
                                                            -----------               -----------
Shares used in computing pro
 forma (loss) income per share
 (unaudited)....................                              6,200,992                 6,510,335
                                                            -----------               -----------
                                                            -----------               -----------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-4
<PAGE>
 
                                ACE*COMM CORPORATION
                    STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT)
 
<TABLE>
<CAPTION>
                                PREFERRED STOCK
                             ----------------------                                                   RETAINED
                                                         COMMON STOCK      ADDITIONAL      STOCK      EARNINGS
                                    CLASS B          --------------------    PAID-IN    SUBSCRIPTIONS (ACCUMULATED
                               SHARES     PAR VALUE   SHARES    PAR VALUE    CAPITAL    RECEIVABLE    DEFICIT)      TOTAL
                             -----------  ---------  ---------  ---------  -----------  -----------  -----------  ---------
Balance, June 30, 1992.....       1,000   $   1,000  3,927,988  $  39,280   $ 673,277       --       ($1,012,356) $(298,799)
<S>                          <C>          <C>        <C>        <C>        <C>          <C>          <C>          <C>
Accretion of preferred
 stock dividends...........      --          --         --         --         (93,262)      --           --         (93,262)
Net income for the year
 ended June 30, 1993.......      --          --         --         --          --           --          369,148     369,148
                                  -----   ---------  ---------  ---------  -----------  -----------  -----------  ---------
Balance, June 30, 1993.....       1,000       1,000  3,927,988     39,280     580,015       --         (643,208)    (22,913)
Accretion of preferred
 stock dividends...........      --          --         --         --        (139,894)      --           --        (139,894)
Net income for the year
 ended June 30, 1994.......      --          --         --         --          --           --          645,716     645,716
                                  -----   ---------  ---------  ---------  -----------  -----------  -----------  ---------
Balance, June 30, 1994.....       1,000       1,000  3,927,988     39,280     440,121       --            2,508     482,909
Accretion of preferred
 stock dividends...........      --          --         --         --        (139,894)      --           --        (139,894)
Issuance of common stock...      --          --         43,360        433      12,907    $  (5,900)      --           7,440
Net loss for the year ended
 June 30, 1995.............      --          --         --         --          --           --       (1,592,646)  (1,592,646)
                                  -----   ---------  ---------  ---------  -----------  -----------  -----------  ---------
Balance, June 30, 1995.....       1,000       1,000  3,971,348     39,713     313,134       (5,900)  (1,590,138)  (1,242,191)
Payment of stock
 subscriptions receivable
 (unaudited)...............      --          --         --         --          --            5,900       --           5,900
Accretion of preferred
 stock dividends
 (unaudited)...............      --          --         --         --        (104,921)      --           --        (104,921)
Issuance of common stock
 (unaudited)...............      --          --        259,645      2,597     140,358     (113,633)      --          29,322
Net income for the nine
 months ended March 31,
 1996 (unaudited)..........      --          --         --         --          --           --          778,658     778,658
                                  -----   ---------  ---------  ---------  -----------  -----------  -----------  ---------
Balance, March 31, 1996
 (unaudited)...............       1,000   $   1,000  4,230,993  $  42,310   $ 348,571    $(113,633)   $(811,480)  $(533,232)
                                  -----   ---------  ---------  ---------  -----------  -----------  -----------  ---------
                                  -----   ---------  ---------  ---------  -----------  -----------  -----------  ---------
</TABLE>
 
              See accompanying notes to the financial statements.
 
                                      F-5
<PAGE>
 
                                ACE*COMM CORPORATION
                              STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                                                   NINE MONTHS ENDED MARCH
                                                                     YEARS ENDED JUNE 30,                    31,
                                                              -----------------------------------  ------------------------
                                                                 1993        1994        1995         1995         1996
                                                              -----------  ---------  -----------  -----------  -----------
                                                                                                         (UNAUDITED)
<S>                                                           <C>          <C>        <C>          <C>          <C>
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)...........................................  $   369,148  $ 645,716  $(1,592,646) $(1,135,555) $   778,658
Adjustments to reconcile net income (loss) to net cash (used
 for) provided by operating activities:
  Depreciation..............................................      156,024    186,967      243,245      176,383      204,777
  Amortization of capitalized software......................      522,492    396,636      418,373      182,914      389,766
Changes in operating assets and liabilities
  Accounts receivable.......................................   (2,306,162)  (720,346)    (338,074)     (65,805)    (213,943)
  Inventories...............................................       38,168   (426,502)    (165,704)    (415,539)    (395,788)
  Other assets..............................................      (60,224)      (674)      (6,108)     (17,949)    (100,299)
  Accounts payable..........................................    1,173,797   (429,936)    (169,129)     (62,625)     812,455
  Accrued expenses..........................................      (18,192)   154,651      190,254      (74,340)     171,043
  Accrued compensation......................................       80,244    (12,195)     (51,324)      (6,448)     250,529
  Taxes receivable..........................................       72,428     --          --           --           --
  Deferred revenue..........................................     (535,262)   204,750      311,777       74,200     (379,267)
                                                              -----------  ---------  -----------  -----------  -----------
Net cash (used for) provided by operating activities........     (507,539)      (933)  (1,159,336)  (1,344,764)   1,517,931
                                                              -----------  ---------  -----------  -----------  -----------
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment.........................     (336,134)  (280,352)    (522,076)    (485,001)    (160,532)
Additions to capitalized software development costs.........     (338,650)  (686,033)    (473,158)    (254,929)    (479,336)
Sales of short-term investments.............................    1,115,611    790,623      --           --           --
Purchases of short-term investments.........................     (790,623)    --          --           --           --
                                                              -----------  ---------  -----------  -----------  -----------
Net cash used for investing activities......................     (349,796)  (175,762)    (995,234)    (739,930)    (639,868)
                                                              -----------  ---------  -----------  -----------  -----------
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in line of credit..............................      779,303    336,349    1,465,000    1,400,000      719,626
Other borrowings............................................      322,715    182,129    1,144,376    1,093,600      105,539
Payments on debt............................................     (234,660)  (256,513)    (419,653)    (326,155)  (1,925,946)
Exercise of stock options...................................      --          --            7,440      --            29,322
Repayment of stock subscriptions receivable.................      --          --          --           --             5,900
                                                              -----------  ---------  -----------  -----------  -----------
Net cash provided by (used for) financing activities........      867,358    261,965    2,197,163    2,167,445   (1,065,559)
                                                              -----------  ---------  -----------  -----------  -----------
Net increase (decrease) in cash.............................       10,023     85,270       42,593       82,751     (187,496)
Cash at beginning of period.................................       52,017     62,040      147,310      147,310      189,903
                                                              -----------  ---------  -----------  -----------  -----------
Cash at end of period.......................................  $    62,040  $ 147,310  $   189,903  $   230,061  $     2,407
                                                              -----------  ---------  -----------  -----------  -----------
                                                              -----------  ---------  -----------  -----------  -----------
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest....................  $   125,090  $ 160,839  $   329,048  $   225,919  $   282,904
                                                              -----------  ---------  -----------  -----------  -----------
                                                              -----------  ---------  -----------  -----------  -----------
Supplemental schedule of non cash financing activities:
Accretion of preferred stock dividends......................  $   139,894  $ 139,894  $   139,894  $   104,921  $   104,921
                                                              -----------  ---------  -----------  -----------  -----------
                                                              -----------  ---------  -----------  -----------  -----------
Issuance of common stock....................................                          $        20               $       350
                                                                                      -----------               -----------
                                                                                      -----------               -----------
Notes received for exercise of common stock options.........                          $     5,900               $   113,633
                                                                                      -----------               -----------
                                                                                      -----------               -----------
</TABLE>
 
                See accompanying notes to financial statements.
 
                                      F-6
<PAGE>
                              ACE*COMM CORPORATION
                         NOTES TO FINANCIAL STATEMENTS
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
1.  ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
    ORGANIZATION
 
    ACE*COMM  Corporation ("ACE*COMM"  or the  "Company") develops,  markets and
services operations support  systems ("OSS") products  for networks deployed  by
telecommunications  service providers, such as telephone companies, other public
carriers and large enterprises operating data and voice networks using intranets
and the Internet. The Company's products perform such functions as billing  data
collection,  network surveillance,  alarm processing and  network management for
some of the largest carriers and enterprises in the world.
 
    INTERIM FINANCIAL INFORMATION (UNAUDITED)
 
    The financial statements at  March 31, 1996 and  for the nine-month  periods
ended  March  31,  1995 and  1996  are  unaudited, but  include  all adjustments
(consisting only  of normal  recurring adjustments)  which management  considers
necessary  for a fair statement  of the financial position  at such date and the
operating results and cash flows for those periods. Results for interim  periods
are  not necessarily  indicative of  results for the  entire year  or any future
periods.
 
    PRO FORMA STOCKHOLDERS' EQUITY (UNAUDITED)
 
    If the offering  contemplated by  this Prospectus is  consummated under  the
terms presently anticipated, all of the mandatorily redeemable Class C preferred
stock  will convert to common stock. Unaudited pro forma stockholders' equity as
of March 31, 1996, is adjusted for the conversion of the mandatorily  redeemable
Class C preferred stock into common stock as follows:
 
<TABLE>
<CAPTION>
                                                                                 PRO FORMA
                                                                                 STOCKHOLDERS'
                                                                                 EQUITY AT
                                                                     MARCH 31,   MARCH 31,
                                                                        1996        1996
                                                                     ----------  ----------
                                                                          (UNAUDITED)
<S>                                                                  <C>         <C>
Mandatorily redeemable Class C Preferred Stock, $5.14 par value,
 340,211 shares authorized, issued and outstanding.................  $2,226,654
                                                                     ----------
Stockholders' (deficit) equity:
  Class B Preferred Stock, $1.00 par value, 1,000 shares
   authorized, Issued and outstanding..............................       1,000  $    1,000
  Common stock, $.01 par value, 45,000,000 shares authorized,
   4,230,993 shares issued and outstanding.........................      42,310      45,712
  Additional paid-in capital.......................................     348,571   2,572,021
  Stock subscriptions receivable...................................    (113,633)   (113,633)
  Accumulated deficit..............................................    (811,480)   (811,480)
                                                                     ----------  ----------
  Total stockholders' (deficit) equity.............................    (533,232)  1,693,422
                                                                     ----------  ----------
  Total mandatorily redeemable preferred stock and stockholders'
   equity..........................................................  $1,693,422  $1,693,422
                                                                     ----------  ----------
                                                                     ----------  ----------
</TABLE>
 
    REVENUE RECOGNITION
 
    The   Company  recognizes  revenue  principally  under  long-term  contracts
involving significant production, modification or customization of hardware  and
software   using  the  percentage-of-completion  method,  based  on  performance
milestones specified  in  the  contract where  such  milestones  fairly  reflect
progress toward contract completion.
 
                                      F-7
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
1.  ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
    Revenue  from maintenance and other  post contract customer support services
is recognized ratably over the term of the related agreements.
 
    SIGNIFICANT CUSTOMERS
 
    The Company  extends  credit  to  its customers  in  the  normal  course  of
business.   Three  customers  in  the  telecommunications  industry  represented
approximately 74%,  57%  and  59%  of  revenues  during  1993,  1994  and  1995,
respectively. International customers represented approximately 29.8%, 37.1% and
62.9% of revenues during 1993, 1994 and 1995, respectively.
 
    CAPITALIZED SOFTWARE DEVELOPMENT COSTS
 
    The  Company owns certain propriety rights to computer software systems that
the Company  has  either  developed  or purchased  and  licensed  to  customers.
Purchased  computer software and the related copyrights are capitalized at their
costs.
 
    Research and development costs are  expensed as incurred. However,  computer
software development costs incurred after technological feasibility of a product
is  established and until the product is  available for release to customers are
capitalized. Capitalized software and  purchased technology costs are  amortized
on a product by product basis based on the greater of the ratio of current sales
to  estimated total  future sales  or a  straight-line basis  over the remaining
estimated economic life of the product  (no greater than three years)  including
the current year.
 
    INVENTORIES
 
    Inventories, which consists principally of purchased materials to be used in
the production of finished goods, are stated at the lower of cost, determined on
the first-in, first-out (FIFO) method, or market.
 
    PROPERTY AND EQUIPMENT
 
    Property  and  equipment are  recorded at  cost. Depreciation  is calculated
using the straight-line method  over the estimated useful  lives of the  related
equipment,  fixtures  and vehicles  of seven  years. Leasehold  improvements are
amortized on  a  straight-line method  over  the shorter  of  the  improvements'
estimated useful lives or related remaining lease terms.
 
    INCOME TAXES
 
    Effective   July  1,  1993,  the  Company  adopted  Statement  of  Financial
Accounting Standards  No. 109  (SFAS  No. 109)  "Accounting for  Income  Taxes."
Previously, the Company used the deferred method for computing income taxes. The
adoption  of  SFAS No.  109  did not  have a  material  impact on  the Company's
financial position or results of operations.
 
    Income taxes are provided  for the tax effects  of transactions reported  in
the  financial statements and consist of taxes currently due plus deferred taxes
related primarily  to differences  between  the basis  of fixed  and  intangible
assets  and  revenue recognition  for financial  and  income tax  reporting. The
deferred tax assets  and liabilities  represent the future  tax consequences  of
those  differences, which will  either be taxable or  deductible when the assets
and liabilities are recovered or settled.
 
    PRO FORMA NET (LOSS) INCOME PER SHARE (UNAUDITED)
 
    Historical net (loss)  income per  share is  not considered  relevant as  it
would  differ materially from  pro forma net  (loss) income per  share given the
contemplated changes in the  capital structure of the  Company. Except as  noted
below,   pro  forma  net   (loss)  income  per  share   is  computed  using  the
 
                                      F-8
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
1.  ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
weighted average  number  of shares  of  common stock,  assuming  conversion  of
mandatorily  redeemable  preferred  Class  C stock,  and  dilutive  common stock
equivalent shares from common stock options. Common stock equivalent shares  are
calculated  using the treasury stock method. Pursuant to Securities and Exchange
Commission Staff  Accounting Bulletin  No.  83, common  stock and  common  stock
equivalent  shares issued  by the  Company at  prices below  the public offering
price during the twelve month period prior to the proposed offering date  (using
the  treasury stock  method and an  offering price  of $10 per  share) have been
included in  the  calculation  as if  they  were  outstanding for  all  of  1995
regardless of whether they are dilutive.
 
2.  ACCOUNTS RECEIVABLE
    Accounts  receivable  net  of  allowance for  doubtful  accounts  of $10,000
consist of the following:
 
<TABLE>
<CAPTION>
                                                            JUNE 30,
                                                     ----------------------
                                                        1994        1995
                                                     ----------  ----------
<S>                                                  <C>         <C>
Billed.............................................  $3,182,718  $3,685,109
Unbilled...........................................   1,181,948   1,017,631
                                                     ----------  ----------
                                                     $4,364,666  $4,702,740
                                                     ----------  ----------
                                                     ----------  ----------
</TABLE>
 
    Unbilled receivables include  costs and estimated  earnings on contracts  in
progress  which have been recognized as revenue  but not yet billed to customers
under  the  provisions  of   specific  contracts.  Substantially  all   unbilled
receivables are expected to be billed and collected within one year.
 
3.  PROPERTY AND EQUIPMENT
    Property and equipment consists of the following:
 
<TABLE>
<CAPTION>
                                                            JUNE 30,
                                                     ----------------------
                                                        1994        1995
                                                     ----------  ----------
<S>                                                  <C>         <C>
Computer equipment.................................  $1,139,210  $1,569,618
Furniture and fixtures.............................     206,651     261,761
Vehicles...........................................      42,384      42,384
Leasehold improvements.............................      16,889      19,654
                                                     ----------  ----------
                                                      1,405,134   1,893,417
Less accumulated depreciation and amortization.....    (515,317)   (724,769)
                                                     ----------  ----------
                                                     $  889,817  $1,168,648
                                                     ----------  ----------
                                                     ----------  ----------
</TABLE>
 
4.  CAPITALIZED SOFTWARE DEVELOPMENT COSTS
 
<TABLE>
<CAPTION>
                                                            JUNE 30,
                                                    ------------------------
                                                       1994         1995
                                                    -----------  -----------
<S>                                                 <C>          <C>
Capitalized software development costs............  $ 3,169,099  $ 3,642,257
Less accumulated amortization.....................   (2,222,781)  (2,634,347)
                                                    -----------  -----------
                                                    $   946,318  $ 1,007,910
                                                    -----------  -----------
                                                    -----------  -----------
</TABLE>
 
    Amortization  expense of capitalized software amounted to $522,492, $396,636
and $418,373 in 1993, 1994 and 1995, respectively.
 
                                      F-9
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
5.  BORROWINGS
    The Company's borrowings consist of the following:
 
<TABLE>
<CAPTION>
                                                                            JUNE 30,
                                                                     ----------------------
                                                                        1994        1995
                                                                     ----------  ----------
<S>                                                                  <C>         <C>
Bank line of credit, credit limit up to $2,500,000, due on demand,
 renewable November 1995, bearing interest at the bank's prime rate
 (9% at June 30, 1995) plus 1/2%, collateralized by accounts
 receivable (advances limited to 90% of eligible balance) and
 inventory. .......................................................  $1,720,000  $2,500,000
Bank line of credit, credit limit up to $1,350,000, renewable
 November 1995, bearing interest at the bank's prime rate (9% at
 June 30, 1995) plus 1/2%, collateralized by accounts receivable,
 inventory and specific equipment. ................................      --       1,185,096
Installment demand notes, due in varying monthly installments
 through August 1999, bearing interest at the bank's prime rate (9%
 at June 30, 1995) plus 1%, collateralized by certain
 equipment. .......................................................     310,014     571,999
Unsecured note payable for the purchase of technology and product
 rights, principal due in quarterly installments of $10,417 plus
 interest at 8% through April 1997. ...............................     125,000      93,750
Note payable to bank, due in monthly installments of $574 including
 interest at 13% through December 1995, collateralized by a
 vehicle. .........................................................       8,890       2,782
                                                                     ----------  ----------
Total borrowings...................................................   2,163,904   4,353,627
Less current portion...............................................  (2,077,787) (4,301,544)
                                                                     ----------  ----------
Noncurrent portion.................................................  $   86,117  $   52,083
                                                                     ----------  ----------
                                                                     ----------  ----------
</TABLE>
 
    Annual maturities of long term debt are as follows:
 
<TABLE>
<CAPTION>
YEAR ENDING JUNE 30,
- -------------------------------------------------------------------
<S>                                                                  <C>
1997...............................................................  $  41,667
1998...............................................................     10,416
                                                                     ---------
                                                                     $  52,083
                                                                     ---------
                                                                     ---------
</TABLE>
 
    On January 25,  1996, the Company  was notified of  the bank's intention  to
extend their lines of credit facilities to July 1, 1996. In accordance with this
extension,  the Company must comply with  certain financial covenants, such as a
minimum current ratio, minimum net worth,  and minimum total liabilities to  net
worth.
 
6.  TRANSACTIONS WITH RELATED PARTIES
    In  connection with  the purchase  of certain assets  by the  Company at its
inception, the Company's president loaned $150,000  to the Company to assist  in
financing  the acquisition.  The note bears  interest at  the Federal short-term
rate established periodically  by the  U.S. Treasury  (5.6% at  June 30,  1995).
Principal  and interest is paid quarterly.  The outstanding loan balance totaled
$95,833 at June 30, 1994 and 1995.
 
                                      F-10
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
6.  TRANSACTIONS WITH RELATED PARTIES (CONTINUED)
    During 1993,  1994  and 1995,  the  Company purchased  inventories  totaling
approximately  $631,000, $1,036,000  and $62,000,  respectively, from  a company
whose Board of Directors included the Company's president and another member  of
the Company's Board of Directors. The Company's president retired from the other
company's  Board of Directors in January 1994. Accounts payable at June 30, 1994
and 1995 include  approximately $381,000  and $125,000,  respectively, which  is
payable to this company.
 
7.  RETIREMENT PLAN
    The   Company  has  a  simplified-employee   pension  plan  (SEPP)  covering
substantially all employees. Under the SEPP, the Company makes contributions  to
the  plan subject to Company performance  and the maximum contribution allowable
by the  IRS.  The  contribution  rate  is set  annually  at  the  discretion  of
management.  Contributions made during  1993, 1994 and  1995, were approximately
$45,800, $120,300 and $0, respectively.
 
    On April 1,  1994, the Company  established a 401(k)  plan. To be  eligible,
employees  must have completed six months of service and be at least 21 years of
age and be credited with 1,000 hours of service. No employer contributions  were
made during 1994 and 1995.
 
8.  INCOME TAXES
    Deferred tax assets (liabilities) are comprised of the following:
 
<TABLE>
<CAPTION>
                                                            JUNE 30,
                                                     ----------------------
                                                        1994        1995
                                                     ----------  ----------
<S>                                                  <C>         <C>
Tax assets:
  Costs capitalized to inventory...................  $   54,665  $  134,572
  Accruals not deducted for tax....................      70,778      55,368
  Net operating loss carryforwards.................     741,521   1,203,675
  Tax credit carryforwards.........................     251,283     251,283
  Copyright and patents............................      27,625      23,857
  Other............................................       3,900       3,963
                                                     ----------  ----------
    Gross deferred tax assets......................   1,149,772   1,672,718
                                                     ----------  ----------
Tax liabilities:
  Income on contracts..............................    (457,060)   (333,297)
  Software costs deducted for tax..................    (369,064)   (393,137)
  Depreciation.....................................    (119,337)   (163,829)
  Other............................................      (3,900)     (3,900)
                                                     ----------  ----------
    Gross deferred tax liabilities.................    (949,361)   (894,163)
                                                     ----------  ----------
  Net deferred tax asset...........................     200,411     778,555
                                                     ----------  ----------
Valuation allowance................................    (200,411)   (778,555)
                                                     ----------  ----------
Net deferred tax asset/(liability).................  $   --      $   --
                                                     ----------  ----------
                                                     ----------  ----------
</TABLE>
 
    At  June 30, 1994 and 1995, a  valuation allowance was recorded for the full
value of net  deferred tax  assets as realization  of these  benefits cannot  be
reasonably assured.
 
                                      F-11
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
8.  INCOME TAXES (CONTINUED)
    In 1993, the provision for income taxes contains a charge in lieu of Federal
and  state income taxes  that would be required  to be paid  had the Company not
been able to utilize its net  operating loss carryforwards. The tax benefit  for
1993  of $151,000 resulting  from such utilization is  shown as an extraordinary
item in the statements  of operations. In 1994,  the provision for income  taxes
was  comprised of a Federal and state provision of $258,000, which was offset by
a reduction in  the valuation allowance  of the same  amount. The change  during
1995  in the valuation allowance was largely attributable to the increase in net
operating losses.
 
    At June 30, 1995, the Company has available research credit carryforwards of
approximately $251,000  which are  available  to offset  future income  tax  and
expire  in  years  through  2005.  The  Company  also  has  net  operating  loss
carryforwards for income tax purposes  of approximately $3,086,000 which  expire
in  years through  2010. Ownership changes,  as defined in  the Internal Revenue
Code, may  limit the  amount of  net operating  loss carryforwards  that can  be
utilized annually to offset future taxable income or tax liability.
 
    The  total  income tax  provision (benefit)  for each  year varied  from the
amount computed  by applying  the statutory  U.S. Federal  income tax  rates  to
income before income taxes and extraordinary items as follows:
 
<TABLE>
<CAPTION>
                                                   YEAR ENDED JUNE 30,
                                             -------------------------------
                                               1993       1994       1995
                                             ---------  ---------  ---------
<S>                                          <C>        <C>        <C>
Income tax provision/(benefit) at statutory
 rate......................................  $ 129,047  $ 219,543  $(541,500)
State income taxes net of Federal
 benefit...................................     21,953     32,286    (79,632)
Nondeductible expenses.....................     --         --         30,555
Other......................................     --          5,981     12,433
Change in valuation allowance..............     --       (257,810)   578,144
                                             ---------  ---------  ---------
    Actual provision.......................  $ 151,000  $  --      $  --
                                             ---------  ---------  ---------
                                             ---------  ---------  ---------
</TABLE>
 
9.  MANDATORILY REDEEMABLE PREFERRED STOCK
    On October 31, 1991, in connection with an investment agreement, the Company
sold  340,211 shares of Class C, convertible preferred stock at $5.14 per share.
The Class  C shares  consist of  two  series. Series  1 stock  (211,727  shares)
provides  voting rights equal to  the same number of  shares of common stock and
Series 2 stock (128,484 shares) provides no  voting rights but, if elected by  a
majority  of the Class C preferred stockholders,  will become voting shares on a
one-to-one basis.
 
    Each share of Class C preferred stock may be converted into common stock  at
any time by the holder. Additionally, the shares will be converted automatically
upon  an underwritten, public offering of the Company's common stock. The number
of shares of common  stock into which  the preferred stock  can be converted  is
determined by a conversion price, as defined under the agreement. Currently, the
conversion  price is $0.95 per  share and if converted  now, the shares would be
exchanged on a 5.42  to 1 basis.  No dividends are payable  with respect to  any
converted  shares. The Company has reserved 1,843,945 shares of common stock for
the purpose of conversion.
 
    Any shares not converted by designated dates will be redeemed by the Company
as follows:  one-third of  the shares  on September  15, 1995,  one-half of  the
remaining  shares  on  September  15,  1996, and  all  the  remaining  shares on
September  15,  1997.  The  redemption  price  is  equal  to  $5.14  per   share
 
                                      F-12
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
9.  MANDATORILY REDEEMABLE PREFERRED STOCK (CONTINUED)
plus  accrued dividends. In the case of  redemption, the holders are entitled to
receive accrued dividends, at a semi-annual rate of four percent, from  November
1,  1992.  The  Company also  has  the  right to  force  redemption,  if certain
triggering events occur, at  a price of $5.14  per share plus accrued  dividends
from  November 1, 1992,  calculated at an  annual rate of  twelve percent. As of
June 30, 1995, the Company had no right to force redemption. The holders of  the
securities postponed the September 15, 1995 redemption until September 15, 1996.
 
    Activity  with  respect  to  mandatorily redeemable  preferred  stock  is as
follows:
 
<TABLE>
<S>                                                  <C>
Balance, June 30, 1992.............................  $1,748,683
Accretion of dividends.............................      93,262
                                                     ----------
Balance, June 30, 1993.............................   1,841,945
Accretion of dividends.............................     139,894
                                                     ----------
Balance, June 30, 1994.............................   1,981,839
Accretion of dividends.............................     139,894
                                                     ----------
Balance, June 30, 1995.............................  $2,121,733
                                                     ----------
                                                     ----------
</TABLE>
 
10. STOCKHOLDERS' EQUITY
    All common shares are subject to restriction upon resale. Shares may only be
offered to the Company for sale, and upon termination, employees holding  common
shares  are subject to the Company's right  or obligation to repurchase all such
shares at a price based  on the stock purchase agreement.  As of June 30,  1995,
the Company had no obligation to repurchase any shares held by employees.
 
    The  Class B preferred stock  contains no voting rights,  bears no rights to
receive dividends,  is nonconvertible,  and is  redeemable for  $308,000 at  the
option  of the Company, or  must be redeemed upon  transfer of substantially all
assets or of majority control of the Company.
 
    STOCK OPTIONS
 
    Prior to the establishment of the Company's formal option plan, the  Company
granted  options  to various  employees for  performance and  hiring incentives.
Under this plan, 1,094,840 options were granted and 1,067,740 were exercised  or
expired  prior to  1993 with an  option price of  $.14 - $.51.  During 1995, the
remaining 27,000 shares were exercised at a price of $.14. The Company no longer
issues options under this plan.
 
    The Company has reserved 2,168,000 common shares in connection with a  Board
of  Directors approved plan to grant  nonqualified stock options to officers and
key employees  and 108,400  common shares  in connection  with a  plan to  grant
nonqualified  stock options to the Company's nonemployee directors. The exercise
price on all  options granted are  equivalent to  the fair market  value of  the
Company's stock on the date of grant. Options for employees vest immediately and
expire  upon the earlier of the employee's termination  or 3 to 5 years from the
date of grant. Options for directors vest  1,000 shares each year from the  date
of  grant and expire  the earlier of 5  years from date of  grant, 6 months upon
resignation  or  immediately  upon  removal  for  cause.  All  of  the   options
outstanding  at June 30, 1993,  1994 and 1995 are  exercisable. The stock option
plan also provides for the issuance of
 
                                      F-13
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
10. STOCKHOLDERS' EQUITY (CONTINUED)
restricted stock, stock  appreciation rights  and phantom stock  options. As  of
June  30, 1993, 1994 and 1995, no restricted stock, stock appreciation rights or
phantom stock options have been granted. As of June 30, 1995, options  available
for granting were 915,731.
 
    Information relating to all the plans is summarized as follows:
 
<TABLE>
<CAPTION>
                                                                       SHARES        PRICE
                                                                     -----------  -----------
<S>                                                                  <C>          <C>
Options outstanding, June 30, 1992.................................      333,910  $ .14 - .51
Granted............................................................      315,406          .25
                                                                     -----------  -----------
Options outstanding, June 30, 1993.................................      649,316    .14 - .51
Granted............................................................      468,402    .34 - .69
                                                                     -----------  -----------
Options outstanding, June 30, 1994.................................    1,117,718    .14 - .69
Granted............................................................      288,100          .69
Exercised..........................................................      (43,360)   .14 - .51
Expired............................................................      (18,049)   .14 - .69
                                                                     -----------  -----------
Options outstanding, June 30, 1995.................................    1,344,409  $ .14 - .69
                                                                     -----------
                                                                     -----------
</TABLE>
 
    During  1995, the  Company issued  10,840 shares  of common  stock which was
recorded as a subscription receivable.
 
11. RECAPITALIZATION
    On June  23, 1996,  the Board  of Directors  approved a  5.42-for-one  stock
split,  to be  effected in  the form of  a stock  dividend to  be distributed on
                 , to stockholders of record on                  . In  addition,
authorized  shares of common stock were  increased from 6,292,000 to 45,000,000.
The Board also authorized 5,000,000 shares of undesignated preferred stock.  All
references  in the financial  statements to number of  shares, per share amounts
and market prices of the Company's common stock have been retroactively restated
to reflect the increased number of shares of common stock outstanding.
 
12. COMMITMENTS
 
    OPERATING LEASES
 
    The Company  leases  its  office  facilities  and  certain  equipment  under
operating  leases expiring on July 31, 1996. Future minimum lease payments under
noncancelable operating  leases,  for  the Company's  fiscal  year  ending,  are
approximately as follows:
 
<TABLE>
<CAPTION>
YEAR ENDING JUNE 30,
- -----------------------------------------------------------------
<S>                                                                <C>
1996.............................................................  $   246,900
1997.............................................................       20,900
                                                                   -----------
                                                                   $   267,800
                                                                   -----------
                                                                   -----------
</TABLE>
 
    Total  rental expense was  approximately $170,000, $221,500  and $222,800 in
1993, 1994 and 1995, respectively.
 
13. SUBSEQUENT EVENTS (UNAUDITED)
    Effective March 1, 1996, the Company entered into a credit agreement with  a
bank  to finance inventory for a large  foreign contract. The Company can borrow
up to $1,000,000 at 1.25% over the
 
                                      F-14
<PAGE>
                              ACE*COMM CORPORATION
                   NOTES TO FINANCIAL STATEMENTS (CONTINUED)
            (INFORMATION SUBSEQUENT TO JUNE 30, 1995 AND PERTAINING
               TO MARCH 31, 1996 AND THE NINE-MONTH PERIODS ENDED
                     MARCH 31, 1995 AND 1996 IS UNAUDITED)
 
13. SUBSEQUENT EVENTS (UNAUDITED) (CONTINUED)
bank's prime rate.  The agreement requires  the Company to  comply with  certain
financial  covenants.  On behalf  of the  Company,  the U.S.  Export-Import Bank
guarantees to the bank 90% of  the outstanding balance, which is  collateralized
by  the inventory  and the foreign  receivables generated by  the contract. This
agreement expires on August 31, 1996.
 
    Effective May 29, 1996,  the Company entered into  new loan agreements  with
its  bank. The Company's $2,500,000 line of  credit was extended to November 30,
1997. The new line bears interest payable monthly, at 0.5% over the bank's prime
rate and  the  principal  is  due  November 30,  1997.  In  addition,  a  second
$1,350,000  line  of credit  was replaced  with  a revolving  line of  credit of
$1,000,000. This facility  bears interest at  0.5% over the  bank's prime  rate,
payable monthly, and the principal is due on November 30, 1997. The Company also
replaced  $600,000 of  demand notes with  a $600,000 promissory  note. This note
bears interest at  1.0% over  the bank's prime  rate, payable  monthly, and  the
principal  is due on November 30, 1997.  These new credit facilities are secured
by accounts receivable and  inventory certain of which  are subordinated to  the
security  interests of the  credit agreement described  above, and the agreement
contains certain financial covenants.
 
    In connection with these new agreements, the Company reclassified $2,893,338
of current borrowings at March 31,  1996 to noncurrent borrowings in  accordance
with  SFAS  No.  6, "Classification  of  Short-Term Obligations  Expected  to be
Refinanced."
 
                                      F-15
<PAGE>
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
    NO  PERSON  HAS BEEN  AUTHORIZED  TO GIVE  ANY  INFORMATION OR  TO  MAKE ANY
REPRESENTATIONS OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS, AND, IF GIVEN  OR
MADE, SUCH INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN
AUTHORIZED  BY  THE  COMPANY  OR  THE  UNDERWRITERS.  THIS  PROSPECTUS  DOES NOT
CONSTITUTE AN OFFER TO SELL OR A SOLICITATION OF AN OFFER TO BUY ANY  SECURITIES
OTHER  THAN THE  SECURITIES TO  WHICH IT  RELATES OR  ANY OFFER  TO SELL  OR THE
SOLICITATION OF AN OFFER  TO BUY SUCH SECURITIES  IN ANY CIRCUMSTANCES IN  WHICH
SUCH  OFFER OR SOLICITATION IS UNLAWFUL. NEITHER THE DELIVERY OF THIS PROSPECTUS
NOR  ANY  SALE  MADE  HEREUNDER  SHALL,  UNDER  ANY  CIRCUMSTANCES,  CREATE  ANY
IMPLICATION  THAT THERE HAS BEEN  NO CHANGE IN THE  AFFAIRS OF THE COMPANY SINCE
THE DATE HEREOF OR THAT  THE INFORMATION CONTAINED HEREIN  IS CORRECT AS OF  ANY
TIME SUBSEQUENT TO ITS DATE.
 
                            ------------------------
 
                               TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                    PAGE
                                                    -----
<S>                                              <C>
Prospectus Summary.............................           3
Risk Factors...................................           8
Use of Proceeds................................          14
Dividend Policy................................          14
Capitalization.................................          15
Dilution.......................................          16
Selected Financial Data........................          17
Management's Discussion and Analysis of
 Financial Condition and Results of
 Operations....................................          18
Business.......................................          25
Management.....................................          38
Certain Transactions...........................          45
Principal and Selling Stockholders.............          46
Description of Capital Stock...................          47
Certain Charter and By-Law Provisions..........          49
Shares Eligible for Future Sale................          50
Underwriting...................................          53
Legal Matters..................................          54
Experts........................................          54
Additional Information.........................          54
Glossary of Terms..............................          55
Index to Financial Statements..................         F-1
</TABLE>
 
                            ------------------------
 
    UNTIL               , 1996 (25 DAYS AFTER  THE DATE OF THIS PROSPECTUS), ALL
DEALERS EFFECTING  TRANSACTIONS IN  THE REGISTERED  SECURITIES, WHETHER  OR  NOT
PARTICIPATING  IN THIS  DISTRIBUTION, MAY BE  REQUIRED TO  DELIVER A PROSPECTUS.
THIS IS IN ADDITION TO THE OBLIGATIONS  OF DEALERS TO DELIVER A PROSPECTUS  WHEN
ACTING   AS  UNDERWRITERS  AND  WITH  RESPECT  TO  THEIR  UNSOLD  ALLOTMENTS  OR
SUBSCRIPTIONS.
 
                                2,518,203 SHARES
 
                              ACE*COMM CORPORATION
 
                                  COMMON STOCK
 
                               ------------------
 
                                  FURMAN SELZ
 
                            OPPENHEIMER & CO., INC.
 
                             RODMAN & RENSHAW, INC.
 
                                          , 1996
 
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>
                                    PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.
 
    The  following table sets forth the  various expenses in connection with the
sale and  distribution  of  the  securities being  registered,  other  than  the
underwriting  discounts and commissions. All  amounts shown are estimates except
for the Securities and Exchange Commission registration fee, the NASD filing fee
and the Nasdaq National Market listing fee.
 
<TABLE>
<S>                                                              <C>
SEC Registration Fee...........................................  $10,984.66
NASD Filing Fee................................................    3,686.00
Nasdaq National Market Listing Fee.............................      *
Blue Sky Fees and Expenses (including legal fees)..............      *
Transfer Agent and Registrar Fees..............................      *
Accounting Fees and Expenses...................................      *
Legal Fees and Expenses........................................      *
Printing, Engraving and Mailing Expenses.......................      *
Miscellaneous..................................................      *
                                                                 ----------
    Total......................................................  $   *
                                                                 ----------
                                                                 ----------
</TABLE>
 
- ------------------------
* To be completed by amendment.
 
ITEM 14.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.
 
    (a) Section  2-418  of the  Corporations  and Associations  Article  of  the
Annotated  Code of Maryland  permits a corporation to  indemnify its present and
former directors, among others, against judgments, penalties, fines, settlements
and reasonable  expenses  actually  incurred  by them  in  connection  with  any
proceeding  to which  they may be  made a party  by reason of  their services in
those or other capacities, unless it is established that (a) the act or omission
of the  director or  officer was  material to  the matter  giving rise  to  such
proceeding  and (i) was committed in bad faith  or (ii) was the result of active
and deliberate dishonesty; or (b) the  director or officer actually received  an
improper personal benefit in money, property, or services; or (c) in the case of
any criminal proceeding, the director or officer had reasonable cause to believe
that  the act or  omission was unlawful.  Maryland law permits  a corporation to
indemnify a present and former officer to the same extent as a director, and  to
provide  additional indemnification to an officer who is not also a director. In
addition, Section 2-418(f) of the  Corporations and Associations Article of  the
Annotated Code of Maryland permits a corporation to pay or reimburse, in advance
of  the  final  disposition  of  a  proceeding,  reasonable  expenses (including
attorney's fees) incurred  by a  present or former  director or  officer made  a
party to the proceeding by reason of his service in that capacity, provided that
the corporation shall have received (a) a written affirmation by the director or
officer  of  his good  faith  belief that  he has  met  the standard  of conduct
necessary for indemnification by the corporation; and (b) a written  undertaking
by or on his behalf to repay the amount paid or reimbursed by the corporation if
it shall ultimately be determined that the standard of conduct was not met.
 
    The  Registrant  has provided  for  indemnification of  directors, officers,
employees, and agents in Article VIII of its charter, as amended. This provision
reads as follows:
 
        Section 1.  Mandatory Indemnification.
 
        The Corporation shall indemnify its currently acting and its  former
    directors  and  officers against  any and  all liabilities  and expenses
    incurred in connection  with their  services in such  capacities to  the
    maximum  extent permitted  by the  Maryland General  Corporation Law, as
    from time to time amended.
 
        Section 2.  Discretionary Indemnification.
 
                                      II-1
<PAGE>
        If approved by the Board of Directors, the Corporation may indemnify
    its employees, agents  and persons  who serve  and have  served, at  its
    request  as a director, officer, partner,  trustee, employee or agent of
    another corporation, partnership, joint  venture or other enterprise  or
    employee  benefit plan to the extent determined to be appropriate by the
    Board of Directors.
 
        Section 3.  Advancing Expenses Prior to a Decision.
 
        The Corporation shall advance expenses to its directors and officers
    entitled to mandatory indemnification to the maximum extent permitted by
    the Maryland General Corporation Law, as from time to time amended,  and
    may  in the  discretion of  the Board  of Directors  advance expenses to
    employees, agents and others who may be granted indemnification.
 
        Section 4.  Other Provisions for Indemnification.
 
        The Board of Directors may, by bylaw, resolution or agreement,  make
    further  provision for indemnification of directors, officers, employees
    and agents.
 
    Insofar as indemnification for liabilities arising under the Securities  Act
of  1933 may be permitted to directors,  officers and controlling persons of the
registrant pursuant to  the foregoing provisions,  or otherwise, the  registrant
has  been advised that in the opinion  of the Securities and Exchange Commission
such indemnification is against public policy as expressed in the Securities Act
and is, therefore, unenforceable. In the event that a claim for  indemnification
against  such liabilities (other than the  payment by the registrant of expenses
incurred or paid by a director, officer or controlling person of the  registrant
in the successful defense of any action, suit or proceeding) is asserted by such
director,  officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the matter
has been settled  by controlling  precedent, submit  to a  court of  appropriate
jurisdiction  the  question of  whether such  indemnification  by it  is against
public policy as expressed  in the Securities  Act and will  be governed by  the
final adjudication of such issue.
 
    Under  Maryland law, a corporation is permitted to limit by provision in its
charter the liability of directors and officers, so that no director or  officer
of  the corporation shall be liable to the corporation or to any stockholder for
money damages except  to the extent  that (i) the  director or officer  actually
received  an improper benefit in money, property, or services, for the amount of
the benefit or profit in money, property or services actually received, or  (ii)
a  judgment or other  final adjudication adverse  to the director  or officer is
entered in a proceeding based on a finding in the proceeding that the director's
or officer's action, or failure to act, was the result or active and  deliberate
dishonesty  and  was  material  to  the  cause  of  action  adjudicated  in  the
proceeding.
 
    The Registrant has limited the liability  of its directors and officers  for
money  damages in Article VIII of its  charter, as amended. This provision reads
as follows:
 
    Section 5.  Limitation of Liability of Directors and Officers.
 
    To the fullest  extent that limitations  on the liability  of directors  and
officers  are permitted by the Maryland  General Corporation Law, no director or
officer of  the  Company  shall  have  any  liability  to  the  Company  or  its
stockholders  for  damages.  This  limitation  on  liability  applies  to events
occurring at the time a person serves  as a director or officer of the  Company,
whether  or not such person is serving as  such at the time of any proceeding in
which liability is asserted.
 
ITEM 15.  RECENT SALES OF UNREGISTERED SECURITIES.
 
    The following sets forth certain  information regarding sales of, and  other
transactions  with respect to, securities of  the Company issued within the past
three years, which sales and other transactions were not registered pursuant  to
the Securities Act of 1933, as amended (the "Securities Act"). All of such sales
and   transactions  were  exempt  from  the  registration  requirements  of  the
Securities Act  pursuant  to Section  4(2)  thereof or  as  otherwise  indicated
herein.
 
                                      II-2
<PAGE>
    On  September 15, 1993, the Company granted options to purchase an aggregate
of 343,742 shares of  Common Stock of  the Company to  certain employees of  the
Company  under the  Company's Omnibus  Stock Plan.  The exercise  price of these
options was $0.34 per share.
 
    On October 30, 1993, the Company granted to each of Messrs. Casner, Hartwell
and Wetzel, three  non-employee members of  the Board of  Directors, options  to
purchase  5,420 shares of Common Stock of  the Company under the Company's Stock
Option Plan for  Directors. The exercise  price of these  options was $0.34  per
share.
 
    On  June 1, 1994,  the Company granted  options to purchase  an aggregate of
108,400 shares of  Common Stock of  the Company  to an employee  of the  Company
under  the Company's Omnibus Stock Plan. The exercise price of these options was
$0.64 per share.
 
    On September 12, 1994, the Company granted options to purchase an  aggregate
of  261,000 shares of  Common Stock of  the Company to  certain employees of the
Company under the  Company's Omnibus  Stock Plan.  The exercise  price of  these
options was $0.69 per share.
 
    On November 5, 1994, the Company granted to each of Messrs. Casner, Hartwell
and  Wetzel, three  non-employee members of  the Board of  Directors, options to
purchase 5,420 shares of Common Stock  of the Company under the Company's  Stock
Option  Plan for Directors.  The exercise price  of these options  was $0.69 per
share.
 
    On March 27, 1995  the Company granted options  to purchase an aggregate  of
10,840 shares of Common Stock of the Company to an employee of the Company under
the  Company's Omnibus Stock Plan. The exercise price of these options was $0.69
per share.
 
    On December  9, 1995,  the Company  granted to  each of  Messrs. Casner  and
Wetzel,  two non-employee members of the Board of Directors, options to purchase
5,420 shares of Common  Stock of the Company  under the Company's Amended  Stock
Option  Plan for Directors.  The exercise price  of these options  was $0.53 per
share.
 
    On March 20, 1996  the Company granted options  to purchase an aggregate  of
132,123  shares  of Common  Stock of  the  Company to  certain employees  of the
Company under the  Company's Omnibus  Stock Plan.  The exercise  price of  these
options was $0.53 per share.
 
    Between  July 15, 1994 and March 20, 1996, the Company issued 303,005 shares
of its Common Stock to certain directors  and employees of the Company upon  the
exercise of options at exercise prices ranging from $0.14 to $0.69.
 
    Except  as set forth above, no  underwriters were engaged in connection with
any of the  foregoing sales of  securities. The securities  issued in the  above
transactions  were  offered  and  sold  in  reliance  upon  the  exemption  from
registration under Section 4(2)  of the Securities Act  or Regulation D or  Rule
701  promulgated under the  Securities Act, relative  to sales by  an issuer not
involving any public offering.
 
ITEM 16.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES.
 
    (a) The following exhibits are filed as part of this Registration Statement:
 
<TABLE>
<C>          <S>
      1.1*   Form of Underwriting Agreement.
      3.1**  Form of Charter of the Company.
      3.2**  Form of By-Laws of the Company.
      4.1**  Form of Specimen of Common Stock Certificate.
      5.1**  Opinion of Venable, Baetjer and Howard, LLP re: legality of securities being
              registered.
     10.1*   Supplier Agreement dated December 16, 1992 between the Registrant and AT&T
              World Services, Inc.
</TABLE>
 
                                      II-3
<PAGE>
<TABLE>
<C>          <S>
     10.2*+  Marketing Agreement dated June 18, 1990 between the Registrant and AT&T World
              Services, Inc.
     10.3*+  Subcontract Agreement dated February 24, 1994 between Registrant and AT&T
              Corporation, Government Integrated Solutions.
     10.4*+  Authorized Distributor Agreement dated July 23, 1991 between the Registrant
              and AmerInd, Inc.
     10.5*   Supply Contract dated August 17, 1994 between the Registrant and Teleglobe
              Canada, Inc.
     10.6*+  License Agreement dated August 1, 1995 between the Registrant and Teleglobe
              Canada, Inc.
     10.7*   Subcontract No. 95-1350-01 dated November 8, 1995 between the Registrant and
              ANSTEC, Inc.
     10.8**  Agreement of Subcontract dated April 24, 1994 between the Registrant and the
              Communications Systems Division of GTE Government Systems Corporation.
     10.9*+  Agreement to Purchase Hardware, Render Services and License and Sublicense the
              Use of Software dated October 11, 1995 between the Registrant and Telefonos
              de Mexico, S.A. de C.V.
    10.10**  1994 Amended Stock Option Plan for Directors.
     10.11** Amended and Restated Omnibus Stock Option Plan.
     11.1  * Computation of Pro Forma Earnings Per Share.
     23.1  * Consent of Price Waterhouse LLP.
     23.2  ** Consent of Venable, Baetjer and Howard, LLP (included in their opinion filed
              as Exhibit 5.1).
     24.1  * Powers of Attorney (included in Part II of this Registration Statement).
     27.1  * Financial Data Schedule.
</TABLE>
 
- ------------------------
*   Filed herewith.
 
**  To be filed by amendment.
 
+   Confidential treatment requested as to certain portions, which portions  are
    omitted and filed separately with the Commission.
 
ITEM 17.  UNDERTAKINGS.
 
    Insofar  as indemnification for liabilities arising under the Securities Act
may  be  permitted  to  directors,  officers  and  controlling  persons  of  the
Registrant pursuant to the provisions contained in the Articles of Amendment and
Restatement  of  the  Registrant and  the  laws  of the  State  of  Maryland, or
otherwise, the Registrant has been advised that in the opinion of the Securities
and Exchange  Commission  such  indemnification  is  against  public  policy  as
expressed  in the Securities Act and  is, therefore, unenforceable. In the event
that a  claim  for indemnification  against  such liabilities  (other  than  the
payment by the Registrant of expenses incurred or paid by a director, officer or
controlling  person of the  Registrant in the successful  defense of any action,
suit or proceeding) is asserted by such director, officer or controlling  person
in  connection with the securities being registered, the Registrant will, unless
in the  opinion  of its  counsel  the matter  has  been settled  by  controlling
precedent,  submit to a  court of appropriate  jurisdiction the question whether
such indemnification  by  it  is  against public  policy  as  expressed  in  the
Securities Act and will be governed by the final adjudication of such issue.
 
    The  undersigned registrant hereby undertakes to provide to the Underwriters
at the closing  specified in  the Underwriting Agreement,  certificates in  such
denominations  and registered in  such names as required  by the Underwriters to
permit prompt delivery to each purchaser.
 
                                      II-4
<PAGE>
    The undersigned registrant hereby undertakes that:
 
    (1) For purposes of determining any liability under the Securities Act,  the
information  omitted  from  the  form  of  prospectus  filed  as  part  of  this
Registration Statement in  reliance upon Rule  430A and contained  in a form  of
prospectus  filed by the Registrant pursuant to Rule 424(b)(1) or (4), or 497(h)
under the Securities  Act shall  be deemed  to be  a part  of this  Registration
Statement as of the time it was declared to be effective.
 
    (2)  For the purpose of determining  any liability under the Securities Act,
each post-effective amendment that contains a form of prospectus shall be deemed
to be a new registration statement  relating to the securities offered  therein,
and  the offering  of such  securities at that  time shall  be deemed  to be the
initial bona fide offering thereof.
 
                                      II-5
<PAGE>
                                   SIGNATURES
 
    Pursuant  to the  requirements of  the Securities  Act of  1933, the Company
certifies that  it has  reasonable grounds  to  believe that  it meets  all  the
requirements  for  filing on  Form  S-1 and  has  duly caused  this registration
statement to  be  signed  on  its behalf  by  the  undersigned,  thereunto  duly
authorized in Gaithersburg, Maryland, on this 24th day of June, 1996.
 
                                          ACE*COMM CORPORATION
 
                                          By:        /s/ George T. Jimenez
 
                                             -----------------------------------
                                                      George T. Jimenez
                                                          PRESIDENT
                                                (PRINCIPAL EXECUTIVE OFFICER)
 
                               POWER OF ATTORNEY
 
    KNOW  ALL MEN  BY THESE PRESENTS,  that each person  whose signature appears
below constitutes and appoints George T. Jimenez and James M. Moore, and each of
them, his  true  and lawful  attorney-in-fact  and  agent, with  full  power  of
substitution  and resubstitution, for him  and in his name,  place and stead, in
any and all capacities, to sign any and all amendments (including post-effective
amendments) to this registration statement,  and all documents relating  thereto
and  any registration statement  relating to any offering  made pursuant to this
registration statement that  is to  be effective  upon filing  pursuant to  Rule
462(b)  under the Securities Act of 1933, as amended, and to file the same, with
all exhibits  thereto and  other  documents in  connection therewith,  with  the
Securities and Exchange Commission, granting unto each said attorney-in-fact and
agent,  full power and authority to do and  perform each and every act and thing
necessary or advisable to  be done in  and about the premises,  as fully to  all
intents  and purposes as  he might or  could do in  person, hereby ratifying and
confirming all  that each  said  attorney-in-fact and  agent his  substitute  or
substitutes, may lawfully do or cause to be done by virtue hereof.
 
    Pursuant to the requirements of the Securities Act of 1933, as amended, this
registration  statement  has  been  signed  by  the  following  persons  in  the
capacities and on the dates indicated.
 
<TABLE>
<C>                                                     <S>                                     <C>
                         NAME                                           TITLE                         DATE
- ------------------------------------------------------  --------------------------------------  -----------------
 
                      /s/ George T. Jimenez             President, Treasurer and Director
     -------------------------------------------         (PRINCIPAL EXECUTIVE OFFICER AND         June 24, 1996
                  George T. Jimenez                      PRINCIPAL FINANCIAL OFFICER)
 
                     /s/ Jeffrey C. Johnson
     -------------------------------------------        Accounting Manager                        June 24, 1996
                  Jeffrey C. Johnson                     (PRINCIPAL ACCOUNTING OFFICER)
 
                     /s/ Paul G. Casner, Jr.
     -------------------------------------------        Director                                  June 24, 1996
                 Paul G. Casner, Jr.
 
                       /s/ Gary P. Golding
     -------------------------------------------        Director                                  June 24, 1996
                   Gary P. Golding
 
                      /s/ Gilbert A. Wetzel
     -------------------------------------------        Director                                  June 24, 1996
                  Gilbert A. Wetzel
</TABLE>
 
                                      II-6
<PAGE>
                               INDEX TO EXHIBITS
 
<TABLE>
<CAPTION>
 EXHIBIT NO.                                        DESCRIPTION OF EXHIBIT
- -------------  ------------------------------------------------------------------------------------------------
 
<C>            <S>
      1.1 *    Form of Underwriting Agreement.
      3.1 **   Form of Charter of the Company.
      3.2 **   Form of By-Laws of the Company.
      4.1 **   Form of Specimen of Common Stock Certificate.
      5.1 **   Opinion of Venable, Baetjer and Howard, LLP re: legality of securities being registered.
     10.1 *    Supplier Agreement dated December 16, 1992 between the Registrant and AT&T World Services, Inc.
     10.2 *+   Marketing Agreement dated June 18, 1990 between the Registrant and AT&T World Services, Inc.
     10.3 *+   Subcontract Agreement dated February 24, 1994 between Registrant and AT&T Corporation,
                Government Integrated Solutions.
     10.4 *+   Authorized Distributor Agreement dated July 23, 1991 between the Registrant and AmerInd, Inc.
     10.5 *    Supply Contract dated August 17, 1994 between the Registrant and Teleglobe Canada, Inc.
     10.6 *+   License Agreement dated August 1, 1995 between the Registrant and Teleglobe Canada, Inc.
     10.7 *    Subcontract No. 95-1350-01 dated November 8, 1995 between the Registrant and ANSTEC, Inc.
     10.8 **   Agreement of Subcontract dated April 24, 1994 between the Registrant and the Communications
                Systems Division of GTE Government Systems Corporation.
     10.9 *+   Agreement to Purchase Hardware, Render Services and License and Sublicense the Use of Software
                dated October 11, 1995 between the Registrant and Telefonos de Mexico, S.A. de C.V.
      10.10**  1994 Amended Stock Option Plan for Directors.
      10.11**  Amended and Restated Omnibus Stock Option Plan.
      11.1   * Computation of Pro Forma Earnings Per Share.
      23.1   * Consent of Price Waterhouse LLP.
      23.2   ** Consent of Venable, Baetjer and Howard, LLP (included in their opinion filed as Exhibit 5.1).
      24.1   * Powers of Attorney (included in Part II of this Registration Statement).
      27.1   * Financial Data Schedule.
</TABLE>
 
- ------------------------
*   Filed herewith.
 
**  To be filed by amendment.
 
+   Confidential  treatment requested as to certain portions, which portions are
    omitted and filed separately with the Commission.

<PAGE>



                                                                   Exhibit 1.1
                                                              [Draft - 6/24/96]

                                   2,518,203 SHARES

                                 ACE*COMM CORPORATION

                                     COMMON STOCK
                              (PAR VALUE $.01 PER SHARE)


                                UNDERWRITING AGREEMENT



                                       ________________, 1996




FURMAN SELZ LLC
OPPENHEIMER & CO., INC.
RODMAN & RENSHAW, INC.,
As Representatives of the
  several Underwriters
c/o Furman Selz LLC
230 Park Avenue
New York, New York  10169

Dear Sirs:

1. INTRODUCTION.  Ace*Comm Corporation, a Maryland corporation (the "Company"),
proposes to issue and sell to the several Underwriters named in Schedule I
hereto (the "Underwriters"), for which Furman Selz LLC, Oppenheimer & Co., Inc.
and Rodman & Renshaw, Inc. are acting as representatives (the
"Representatives"), an aggregate of 2,250,000 shares of the Company's Common
Stock, par value $.01 per share (the "Common Stock").  CEO Venture Fund II (the
"Selling Stockholder") proposes to sell to the several Underwriters an aggregate
of 268,203 outstanding shares of Common Stock.  The 2,250,000 shares of Common
Stock to be sold by the Company and the 268,203 shares of Common Stock to be
sold by the Selling Stockholder are referred to herein as the "Firm Shares."
The Company also proposes to issue and sell to the several Underwriters an
aggregate of not more than 377,730 additional shares of Common Stock (the
"Additional Shares"), if requested by the Underwriters in accordance with
Section 9 hereof.  The Firm Shares and the Additional Shares are collectively
referred to herein as the "Shares."  The words "you" and "your" refer to the
Representatives of the Underwriters.




<PAGE>


The Company and the Selling Stockholder hereby severally agree with the several
Underwriters as follows:

    2.   REPRESENTATIONS AND WARRANTIES.

    (a) The Company represents and warrants to, and agrees with, the several
Underwriters that:

              (i)  A registration statement on Form S-1 (File No. 333-________)
    under the Securities Act of 1933, as amended (the "Act"), with respect to
    the Shares, including a form of prospectus subject to completion, has been
    prepared by the Company in conformity with the requirements of the Act and
    the rules and regulations of the Securities and Exchange Commission (the
    "Commission") thereunder (the "Rules and Regulations").  Such registration
    statement has been filed with the Commission under the Act, and one or more
    amendments to such registration statement may also have been so filed.
    After the execution of this Agreement, the Company shall file with the
    Commission either (A) if such registration statement, as it may have been
    amended, has been declared by the Commission to be effective under the Act,
    either (1) if the Company relies on Rule 434 under the Act, a Term Sheet
    (as hereinafter defined) relating to the Shares, that shall identify the
    Preliminary Prospectus (as hereinafter defined) that it supplements and
    containing such information as is required by Rules 434 and 430A under the
    Act or permitted by Rule 424(b) under the Act or (2) if the Company does
    not rely on Rule 434 under the Act, a prospectus in the form most recently
    included in an amendment to such registration statement filed with the
    Commission (or, if no such amendment shall have been filed, in such
    registration statement), with such insertions and changes as are required
    by Rule 430A under the Act or permitted by Rule 424(b) under the Act, and
    in the case of either clause (A)(1) or (A)(2) of this sentence as shall
    have been provided to and approved by the Representatives prior to the
    filing thereof, or (B) if such registration statement, as it may have been
    amended, has not been declared by the Commission to be effective under the
    Act, an amendment to such registration statement, including a form of
    prospectus, a copy of which amendment has been furnished to and approved by
    the Representatives prior to the filing thereof.  As used in this
    Agreement, the term "Registration Statement" means such registration
    statement, as amended at the time when it was or is declared effective,
    including all financial schedules and exhibits thereto; the Registration
    Statement shall be deemed to include any information omitted therefrom
    pursuant to Rule 430A under the Act and included in the Prospectus (as
    hereinafter defined); the term "Preliminary Prospectus" means each
    prospectus subject to completion contained in such registration statement
    or any amendment thereto (including the prospectus subject to completion,
    if any, included in the Registration Statement or any amendment thereto or
    filed pursuant to Rule 424(a) under the Act at the time it was or is
    declared effective); the term "Prospectus" means:  (A) if the Company
    relies on Rule 434 under the Act, the Term Sheet relating to the Shares
    that is first filed pursuant to Rule 424(b)(7) under the Act, together with
    the Preliminary Prospectus identified therein that such Term Sheet


                                         -2-

<PAGE>


    supplements; (B) if the Company does not rely on Rule 434 under the Act,
    the prospectus first filed with the Commission pursuant to Rule 424(b)
    under the Act; or (C) if the Company does not rely on Rule 434 under the
    Act and if no prospectus is required to be filed pursuant to Rule 424(b)
    under the Act, the prospectus included in the Registration Statement; and
    the term "Term Sheet" means any term sheet that satisfies the requirements
    of Rule 434 under the Act.  Any reference to the "date" of a Prospectus
    that contains a Term Sheet shall mean the date of such Term Sheet.  To the
    extent the Company relies on Rule 462(b) under the Act ("Rule 462(b)") to
    increase the maximum aggregate offering price, the Company shall have made
    in a timely manner any filing required under Rule 462(b) and such filing
    shall be in compliance with such Rule.

                (ii)    The Commission has not issued any order preventing or
    suspending the use of any Preliminary Prospectus and has not instituted or
    threatened to institute any proceedings with respect to such an order.
    When any Preliminary Prospectus was filed with the Commission it (A)
    contained all statements required to be stated therein in accordance with,
    and complied in all material respects with the requirements of, the Act and
    the Rules and Regulations and (B) did not include any untrue statement of a
    material fact or omit to state any material fact necessary in order to make
    the statements therein, in the light of the circumstances under which they
    were made, not misleading.  When the Registration Statement or any
    amendment thereto was or is declared effective, it (A) contained or will
    contain all statements required to be stated therein in accordance with,
    and complied or will comply in all material respects with the requirements
    of, the Act and the Rules and Regulations and (B) did not or will not
    include any untrue statement of a material fact or omit to state any
    material fact necessary to make the statements therein not misleading.
    When the Prospectus or any Term Sheet that is a part thereof and when any
    amendment or supplement thereto is filed with the Commission pursuant to
    Rule 424(b) (or, if the Prospectus or such amendment or supplement is not
    required to be so filed, when the Registration Statement and when any
    amendment thereto containing such amendment or supplement to the Prospectus
    was or is declared effective) and at all times subsequent thereto up to and
    including the Closing Date (as defined in Section 3 hereof) and the Option
    Closing Date (as defined in Section 9 hereof), the Prospectus, as amended
    or supplemented at any such time, including any amendment or supplement
    effected by a Term Sheet (A) contained or will contain all statements
    required to be stated therein in accordance with, and complied or will
    comply in all material respects with the requirements of, the Act and the
    Rules and Regulations and (B) did not or will not include any untrue
    statement of a material fact or omit to state any material fact necessary
    in order to make the statements therein, in the light of the circumstances
    under which they were made, not misleading.  The foregoing provisions of
    this paragraph (ii) shall not apply to statements or omissions made in any
    Preliminary Prospectus, the Registration Statement or any amendment thereto
    or the Prospectus or any amendment or supplement thereto in reliance upon,
    and in conformity with, information furnished in writing to the Company by
    or on behalf of the Underwriters through the Representatives expressly for
    use therein.


                                         -3-

<PAGE>


               (iii)    The Company (A) is a duly organized and validly
    existing corporation in good standing under the laws of its jurisdiction of
    incorporation, with full power and authority (corporate and other) to own
    or lease its properties and to conduct its business as described in the
    Registration Statement and the Prospectus (or, if the Prospectus is not in
    existence, the most recent Preliminary Prospectus); and (B) is duly
    qualified to do business as a foreign corporation and is in good standing
    in each jurisdiction (x) in which the conduct of its business requires such
    qualification (except for those jurisdictions in which the failure so to
    qualify has not had and will not have a Material Adverse Effect (as
    hereinafter defined)) and (y) in which it owns or leases property.  Except
    for American Communications, Inc., a wholly-owned subsidiary organized
    under the laws of Barbados, which is currently inactive and has no
    substantial assets or liabilities, the Company has no subsidiaries.
    "Material Adverse Effect" means, when used in connection with the Company,
    any development, change or effect that is materially adverse to the
    business, properties, assets, net worth, condition (financial or other),
    results of operations or prospects of the Company.

               (iv)     The Company has the duly authorized and validly
    outstanding capitalization set forth under the caption "Capitalization" in
    the Prospectus (or, if the Prospectus is not in existence, the most recent
    Preliminary Prospectus) and will have the adjusted capitalization set forth
    therein on the Closing Date and the Option Closing Date, based on the
    assumptions set forth therein.  As of the Closing Date and after giving
    effect to the amendments to the Company's charter referred to in Section
    7(o), the securities of the Company will conform to the descriptions
    thereof contained in the Prospectus (or, if the Prospectus is not in
    existence, the most recent Preliminary Prospectus).  The outstanding shares
    of Common Stock have been duly authorized and validly issued by the Company
    and are fully paid and nonassessable.  Except as created hereby or referred
    to in the Prospectus (or, if the Prospectus is not in existence, the most
    recent Preliminary Prospectus), there are no outstanding options, warrants,
    rights or other arrangements requiring the Company at any time to issue any
    capital stock.  No holders of outstanding shares of capital stock of the
    Company are entitled as such to any preemptive or other rights to subscribe
    for any of the Shares and neither the filing of the registration statement
    nor the offering or sale of the Shares as contemplated by this Agreement
    gives rise to any rights, other than those which have been waived or
    satisfied, for or relating to, the registration of any securities of the
    Company.  The Shares have been duly authorized; on the Closing Date or the
    Option Closing Date (as the case may be), after payment therefor in
    accordance with the terms of this Agreement, (A) the Firm Shares and the
    Additional Shares to be sold by the Company hereunder will be validly
    issued, fully paid and nonassessable, and (B) good and marketable title to
    the Shares will pass to the Underwriters on the Closing Date or the Option
    Closing Date (as the case may be) free and clear of any lien, encumbrance,
    security interest, claim or other restriction whatsoever.  The Company has
    received, subject to notice of issuance, approval to have the Shares listed
    on the Nasdaq National Market (the "NNM") and the Company knows of no
    reason or set of facts which is likely to adversely affect such approval.


                                         -4-

<PAGE>


              (v)  The financial statements and the related notes and schedules
    thereto included in the Registration Statement and the Prospectus (or, if
    the Prospectus is not in existence, the most recent Preliminary Prospectus)
    fairly present the financial condition, results of operations,
    stockholders' equity and cash flows of the Company at the respective dates
    and for the respective periods specified therein.  Such financial
    statements and the related notes and schedules thereto have been prepared
    in accordance with generally accepted accounting principles consistently
    applied throughout the periods involved (except as otherwise noted therein)
    and such financial statements as are audited have been examined by Price
    Waterhouse LLP, who are independent public accountants within the meaning
    of the Act and the Rules and Regulations, as indicated in their reports
    filed therewith.  The selected financial information and statistical data
    set forth under the captions "Prospectus Summary--Summary Financial Data,"
    "Capitalization," "Selected Financial Data," "Management's Discussion and
    Analysis of Financial Condition and Results of Operations" and "Business"
    in the Prospectus (or, if the Prospectus is not in existence, the most
    recent Preliminary Prospectus) fairly present, on the basis stated in the
    Prospectus (or such Preliminary Prospectus), the information included
    therein and have been properly derived from the financial statements and
    other operating records of the Company.

                (vi)    The Company has filed all necessary foreign, federal,
    state and local income, franchise and other material tax returns and has
    paid all taxes shown as due thereunder, and the Company has no knowledge of
    any tax deficiency which might be assessed against the Company which, if so
    assessed, would be reasonably expected to have a Material Adverse Effect.

               (vii)    The Company maintains insurance of the types and in
    amounts which it reasonably believes to be adequate for its business in
    such amounts and with such deductibles as are customary for companies in
    the same or similar business, all of which insurance is in full force and
    effect.

              (viii)    Except as disclosed in the Prospectus (or, if the
    Prospectus is not in existence, the most recent Preliminary Prospectus),
    there is no pending action, suit, proceeding or investigation or threatened
    action, suit, proceeding or investigation before or by any court,
    regulatory body or administrative agency or any other governmental agency
    or body, domestic or foreign, which (A) questions the validity of the
    capital stock of the Company or this Agreement or of any action taken or to
    be taken by the Company pursuant to or in connection with this Agreement,
    (B) is required to be disclosed in the Registration Statement which is not
    so disclosed (and such proceedings, if any, as are summarized in the
    Registration Statement are accurately summarized in all respects), or (C)
    may have a Material Adverse Effect.

                (ix)    The Company has full legal right, power and authority
    to enter into this Agreement and to consummate the transactions provided
    for herein.  This Agreement has been duly authorized, executed and
    delivered by the Company and,


                                         -5-

<PAGE>


    assuming it is a binding agreement of yours, constitutes a legal, valid and
    binding agreement of the Company enforceable against the Company in
    accordance with its terms (except as such enforceability may be limited by
    applicable bankruptcy, insolvency, reorganization, moratorium or other laws
    of general application relating to or affecting the enforcement of
    creditors' rights and the application of equitable principles relating to
    the availability of remedies and except as rights to indemnity or
    contribution may be limited by federal or state securities laws and the
    public policy underlying such laws), and none of the Company's execution or
    delivery of this Agreement, its performance hereunder, its consummation of
    the transactions contemplated herein, its application of the net proceeds
    of the offering in the manner set forth under the caption "Use of Proceeds"
    or the conduct of its business as described in the Prospectus (or, if the
    Prospectus is not in existence, the most recent Preliminary Prospectus),
    conflicts or will conflict with or results or will result in any breach or
    violation of any of the terms or provisions of, or constitutes or will
    constitute a default under, causes or will cause (or permits or will
    permit) the maturation or acceleration of any liability or obligation or
    the termination of any right under, or result in the creation or imposition
    of any lien, charge, or encumbrance upon, any property or assets of the
    Company pursuant to the terms of (A) the charter or by-laws of the Company,
    as will have been amended, as of the Closing Date, (B) any indenture,
    mortgage, deed of trust, voting trust agreement, stockholders' agreement,
    note agreement or other agreement or instrument to which the Company is a
    party or by which it is or may be bound or to which any of its property is
    or may be subject, except such as would not singly or in the aggregate
    be reasonably expected to have a Material Adverse Effect, or (C) any 
    statute, judgment, decree, order, rule or regulation applicable to the 
    Company of any government, arbitrator, court, regulatory body or 
    administrative agency or other governmental agency or body, domestic or 
    foreign, having jurisdiction over the Company or any of its activities 
    or properties.

              (x)  All executed agreements or copies of executed agreements
    filed as exhibits to the Registration Statement to which the Company is a
    party or by which it is or may be bound or to which any of its assets,
    properties or businesses is or may be subject have been duly and validly
    authorized, executed and delivered by the Company and constitute the legal,
    valid and binding agreements of the Company, enforceable against it in
    accordance with their respective terms (except as such enforceability may
    be limited by applicable bankruptcy, insolvency, reorganization or other
    similar laws relating to enforcement of creditors' rights generally, and
    general equitable principles relating to the availability of remedies, and
    except as rights to indemnity or contribution may be limited by federal or
    state securities laws and the public policy underlying such laws).  The
    descriptions in the Registration Statement of contracts and other documents
    are accurate and fairly present the information required to be shown with
    respect thereto by the Act and the Rules and Regulations, and there are no
    contracts or other documents which are required by the Act or the Rules and
    Regulations to be described in the Registration Statement or filed as
    exhibits to the Registration Statement which are not described or filed as
    required, and the exhibits which have been filed are complete and correct
    copies of the documents of which they purport to be copies.


                                         -6-

<PAGE>


                (xi)    Subsequent to the most recent respective dates as of
    which information is given in the Prospectus (or, if the Prospectus is not
    in existence, the most recent Preliminary Prospectus), and except as
    expressly described therein, the Company has not incurred, other than in
    the ordinary course of its business, any material liabilities or
    obligations, direct or contingent, purchased any of its outstanding capital
    stock, paid or declared any dividends or other distributions on its capital
    stock or entered into any material transactions not in the ordinary course
    of business, and there has been no material change in capital stock or debt
    or any material adverse change in the business, properties, assets, net
    worth, condition (financial or other), results of operations or prospects
    of the Company.  The Company (and the manner in which it conducts its
    business) is not in breach or violation of, or in default under, any term
    or provision of (A) its charter or by-laws, as will have been amended as of
    the Closing Date, (B) any indenture, mortgage, deed of trust, voting trust
    agreement, stockholders' agreement, note agreement or other agreement or
    instrument to which it is a party or by which it is or may be bound or to
    which any of its property is or may be subject, or any indebtedness, the
    effect of which breach or default singly or in the aggregate may have a
    Material Adverse Effect, or (C) any statute, judgment, decree, order, rule
    or regulation applicable to the Company or of any arbitrator, court,
    regulatory body, administrative agency or any other governmental agency or
    body, domestic or foreign, having jurisdiction over the Company or any of
    its activities or properties and the effect of which breach or default
    singly or in the aggregate may have a Material Adverse Effect.

               (xii)    No labor disturbance by, or labor dispute with, the
    employees of the Company exists or is threatened or imminent which may have
    a Material Adverse Effect.

              (xiii)    Since its inception, the Company has not incurred any
    material liability arising under or as a result of the application of the
    provisions of the Act.

              (xiv)     The Company owns, or is licensed or otherwise has
    sufficient right to use, the proprietary knowledge, inventions, patents,
    trademarks, service marks, trade names, logo marks and copyrights used in
    or necessary for the conduct of its business (collectively "Rights") as
    described in the Prospectus (or, if the Prospectus is not in existence, the
    most recent Preliminary Prospectus).  No claims have been asserted against
    the Company by any person with respect to the use of any such Rights or
    challenging or questioning the validity or effectiveness of any such
    Rights.  The use, in connection with the business and operations of the
    Company of such Rights does not, to the Company's best knowledge, infringe
    on the rights of any person.

               (xv)     No consent, approval, authorization or order of or
    filing with any court, regulatory body, administrative agency or any other
    governmental agency or body, domestic or foreign, is required for the
    performance of this Agreement or the consummation of the transactions
    contemplated hereby, except such as have been or may be obtained under the
    Act or may be required under state securities or Blue Sky laws in


                                         -7-

<PAGE>


    connection with the Underwriters' purchase and distribution of the Shares
    or such approval as may be required from the NNM or such filings as may be
    required to effect certain amendments to the Company's charter that are
    described in the Prospectus, all of which will be obtained or made prior to
    the Closing Date.

              (xvi)     There are no contracts, agreements or understandings
    between the Company and any person granting such person the right to
    require the Company to file a registration statement under the Act with
    respect to any securities of the Company owned or to be owned by such
    person or to require the Company to include such securities under the
    Registration Statement (other than those that have been disclosed in the
    Prospectus or, if the Prospectus is not in existence, the most recent
    Preliminary Prospectus), that have not been waived with respect to the
    Registration Statement.

             (xvii)     Neither the Company nor any of its officers, directors
    or affiliates (within the meaning of the Rules and Regulations) has taken,
    directly or indirectly, any action designed to stabilize or manipulate the
    price of any security of the Company, or which has constituted or which
    might in the future reasonably be expected to, cause or result in,
    stabilization or manipulation of the price of any security of the Company,
    to facilitate the sale or resale of the Shares or otherwise.

            (xviii)     The Company has good and marketable title to, or valid
    and enforceable leasehold interests in, all properties and assets owned or
    leased by it, free and clear of all liens, encumbrances, security
    interests, claims, restrictions, equities, claims and defects, except (A)
    such as are described in the Registration Statement and Prospectus (or, if
    the Prospectus is not in existence, the most recent Preliminary
    Prospectus), or such as do not materially adversely affect the value of any
    of such properties or assets taken as a whole and do not materially
    interfere with the use made and proposed to be made of any of such
    properties or assets, and (B) liens for taxes not yet due and payable as to
    which appropriate reserves have been established and reflected in the
    financial statements included in the Registration Statement.  The Company
    owns or leases all such properties as are necessary to its operations as
    now conducted, and as proposed to be conducted as set forth in the
    Registration Statement and the Prospectus (or, if the Prospectus is not in
    existence, the most recent Preliminary Prospectus); and the properties and
    business of the Company conform in all material respects to the
    descriptions thereof contained in the Registration Statement and the
    Prospectus (or, if the Prospectus is not in existence, the most recent
    Preliminary Prospectus).  All the material leases and subleases of the
    Company, and under which the Company holds properties or assets as lessee
    or sublessee, constitute valid leasehold interests of the Company free and
    clear of any lien, encumbrance, security interest, restriction, equity,
    claim or defect, are in full force and effect, and the Company is not in
    default in respect of any of the material terms or provisions of any such
    material leases or subleases, and the Company does not have notice of any
    claim which has been asserted by anyone adverse to the Company's rights as
    lessee or sublessee under either the material lease or sublease, or
    affecting or questioning the Company's right to the continued possession of


                                         -8-

<PAGE>


    the leased or subleased premises under any such material lease or sublease,
    which may have a Material Adverse Effect.

              (xix)     The Company has not violated any applicable
    environmental, safety, health or similar law applicable to the business of
    the Company, nor any federal or state law relating to discrimination in the
    hiring, promotion or pay of employees, nor any applicable federal or state
    wages and hours law, nor any provisions of the Employee Retirement Income
    Security Act of 1974, as amended, or the rules and regulations promulgated
    thereunder, the consequences of which violation would reasonably be
    expected to have a Material Adverse Effect.

               (xx)     The Company holds all franchises, licenses, permits,
    approvals, certificates and other authorizations from federal, state and
    other governmental or regulatory authorities necessary to the ownership,
    leasing and operation of its properties or required for the present conduct
    of its business, and such franchises, licenses, permits, approvals,
    certificates and other governmental authorizations are in full force and
    effect and the Company is in compliance therewith in all material respects
    except where the failure so to obtain, maintain or comply with would not
    have a Material Adverse Effect.

              (xxi)     The books, records and accounts and systems of internal
    accounting controls of the Company currently comply with the requirements
    of Section 13(b)(2) of the Securities Exchange Act of 1934, as amended (the
    "Exchange Act").

    (b) The Selling Stockholder represents and warrants to, and agrees with,
the several Underwriters that:

              (i)       The Selling Stockholder has full legal right, power and
    authority to enter into this Agreement.  This Agreement has been duly
    executed and delivered by the Selling Stockholder, and (assuming this
    Agreement is a binding agreement of yours) constitutes the valid and
    binding agreement of the Selling Stockholder, enforceable against the
    Selling Stockholder in accordance with its terms (except as such
    enforceability may be limited by applicable bankruptcy, insolvency,
    reorganization, moratorium or other laws of general application relating to
    or affecting the enforcement of creditor's rights and the application of
    equitable principles relating to the availability of remedies, and except
    as rights to indemnity or contribution may be limited by federal or state
    securities law and the public policy underlying such laws).

              (ii)      None of the execution, delivery or performance of this
    Agreement and the consummation of the transactions herein contemplated,
    will conflict with or result in a breach of, or default under, any
    indenture, mortgage, deed of trust, voting trust agreement, stockholders'
    agreement, note agreement, or other agreement or instrument to which the
    Selling Stockholder is a party or by which the Selling Stockholder is or
    may be bound or to which any of its property is or may be subject, or any
    statute, judgment, decree, order, rule or regulation applicable to the
    Selling Stock-


                                         -9-

<PAGE>


    holder of any government, arbitrator, court, regulatory body or
    administrative agency or other governmental agency or body, domestic or
    foreign, having jurisdiction over the Selling Stockholder or any of its
    activities or properties.

              (iii)     At the date hereof the Selling Stockholder has, and at
    the time of delivery of the Shares to be sold by the Selling Stockholder to
    the several Underwriters, the Selling Stockholder will have, full right,
    power and authority to sell, assign, transfer and deliver the Shares to be
    sold by the Selling Stockholder hereunder.  At the date hereof the Selling
    Stockholder is, and at the time of delivery of the Shares to be sold by the
    Selling Stockholder, the Selling Stockholder will be, the lawful owner of
    and has and will have, good and marketable title to such Shares free and
    clear of any liens, encumbrances, security interests, claims, community
    property rights, restrictions on transfer or other defects in title.  Upon
    delivery of and payment for the Shares to be sold by the Selling
    Stockholder hereunder, good and marketable title to such Shares will pass
    to the Underwriters, free and clear of any liens, encumbrances, security
    interests, claims, community property rights, restrictions on transfer or
    other defects in title.  Except as described in the Registration Statement
    and the Prospectus (or, if there is no Prospectus, the most recent
    Preliminary Prospectus) or created hereby, there are no outstanding
    options, warrants, rights, or other agreements or arrangements requiring
    the Selling Stockholder at any time to transfer any Common Stock to be sold
    hereunder by the Selling Stockholder.

              (iv)      At the time when the Registration Statement becomes or
    became effective, and at all times subsequent thereto up to and including
    the Closing Date and the Option Closing Date, the Registration Statement
    and any amendments thereto will not contain any untrue statement of a
    material fact regarding the Selling Stockholder or omit to state a material
    fact regarding the Selling Stockholder required to be stated therein or
    necessary in order to make the statements therein regarding the Selling
    Stockholder not misleading, and the Prospectus (and any supplements
    thereto) (or, if the Prospectus is not in existence, the most recent
    Preliminary Prospectus) will not contain any untrue statement of a material
    fact regarding the Selling Stockholder or omit to state a material fact
    regarding the Selling Stockholder required to be stated therein or
    necessary in order to make the statements therein regarding the Selling
    Stockholder, in the light of the circumstances under which they were made,
    not misleading, and the Selling Stockholder is unaware of any material
    misstatement in or omission from the Registration Statement or the
    Prospectus (or, if the Prospectus is not in existence, the most recent
    Preliminary Prospectus) or of any material adverse information regarding
    the business or operations of the Company which is not set forth in the
    Registration Statement and the Prospectus (or, if the Prospectus is not
    then in existence, in the most recent Preliminary Prospectus).

              (v)       The Selling Stockholder has not taken, directly or
    indirectly, any action designed to stabilize or manipulate the price of any
    security of the Company, or which has constituted or which might in the
    future reasonably be expected to cause or


                                         -10-

<PAGE>


    result in stabilization or manipulation of the price of any security of the
    Company, to facilitate the sale or resale of the Shares or otherwise.

              (vi)      Nothing has come to the attention of the Selling
    Stockholder to cause the Selling Stockholder to believe that the Company's
    representations and warranties contained in this Agreement are not
    accurate.

              (vii)     There is not pending or threatened against the Selling
    Stockholder any action, suit or proceeding which (A) questions the validity
    of this Agreement or of any action taken or to be taken by the Selling
    Stockholder pursuant to or in connection with this Agreement or (B) is
    required to be disclosed in the Registration Statement which is not so
    disclosed, and such actions, suits or proceedings as are summarized in the
    Registration Statement, if any, are accurately summarized.

    3.   PURCHASE, SALE AND DELIVERY OF THE SHARES.  On the basis of the
representations, warranties, covenants and agreements herein contained, but
subject to the terms and conditions herein set forth, (A) the Company agrees to
sell to each Underwriter and each Underwriter, severally and not jointly, agrees
to purchase from the Company at a purchase price of $______________ per Share,
the number of Firm Shares set forth opposite the name of such Underwriter in
Column (1) of Schedule I hereto and (B) the Selling Stockholder agrees to sell
to each Underwriter, and each Underwriter, severally and not jointly, agrees to
purchase from the Selling Stockholder at a purchase price of $____________ per
Share, the number of Firm Shares set forth opposite the name of such Underwriter
in Column (2) of Schedule I hereto.

    Delivery of certificates, and payment of the purchase price, for the Firm
Shares shall be made at the offices of Furman Selz LLC at 230 Park Avenue, New
York, New York 10169, or such other location as shall be agreed upon by the
Company and the Representatives.  Such delivery and payment shall be made at
10:00 a.m., New York time, on ____________, 1996 or at such other time and date
not more than ten business days thereafter as shall be agreed upon by the
Representatives and the Company.  The time and date of such delivery and payment
are herein called the "Closing Date."  Delivery of the certificates for the Firm
Shares shall be made to the Representatives for the respective accounts of the
several Underwriters against payment by the several Underwriters through the
Representatives of the purchase price for the Firm Shares by certified or
official bank checks in New York Clearing House (next day) funds drawn to the
order of the Company in the case of the Firm Shares sold by it and CEO Venture
Fund II in the case of the Firm Shares sold by the Selling Stockholder.  The
certificates for the Shares to be so delivered will be in definitive, fully
registered form, will bear no restrictive legends and will be in such
denominations and registered in such names as the Representatives shall request,
not less than two full business days prior to the Closing Date.  The
certificates for the Firm Shares will be made available to the Representatives
at such office or such other place as the Representatives may designate for
inspection, checking and packaging not later than 9:30 a.m., New York time, on
the business day prior to the Closing Date.

                                     -11-


<PAGE>

    4.   PUBLIC OFFERING OF THE SHARES.  It is understood that the Underwriters
propose to make a public offering of the Shares at the price and upon the other
terms set forth in the Prospectus.

    5.   COVENANTS OF THE COMPANY AND THE SELLING STOCKHOLDER.

         (a)  The Company covenants and agrees with each of the Underwriters
that:

              (i)       The Company will use its best efforts to cause the
    Registration Statement, if not effective at the time of execution of this
    Agreement, and any amendments thereto to become effective as promptly as
    practicable.  If required, the Company will file the Prospectus or any Term
    Sheet that constitutes a part thereof and any amendment or supplement
    thereto with the Commission in the manner and within the time period
    required by Rules 424(b) and 434 under the Act.  During any time when a
    prospectus relating to the Shares is required to be delivered under the
    Act, the Company (A) will comply with all requirements imposed upon it by
    the Act and the Rules and Regulations to the extent necessary to permit the
    continuance of sales of or dealings in the Shares in accordance with the
    provisions hereof and of the Prospectus, as then amended or supplemented,
    and (B) will not file with the Commission the prospectus, Term Sheet or the
    amendment referred to in the third sentence of Section 2(a)(i) hereof, any
    amendment or supplement to such prospectus, Term Sheet or any amendment to
    the Registration Statement of which the Representatives shall not
    previously have been advised and furnished with a copy a reasonable period
    of time prior to the proposed filing and as to which filing the
    Representatives shall not have given their consent.  In the event that the
    Registration Statement is effective at the time of execution of this
    Agreement but the total number of Shares subject to this Agreement exceeds
    the number of Shares covered by the Registration Statement, the Company
    will promptly file with the Commission on the date hereof a registration
    statement pursuant to Rule 462(b) in accordance with the requirements of
    such Rule and will make payment of the filing fee therefor in accordance
    with the requirements of Rule 111(b) under the Act.

              (ii)      As soon as the Company is advised or obtains knowledge
    thereof, the Company will advise the Representatives (A) when the
    Registration Statement, as amended, has become effective; if the provisions
    of Rule 430A promulgated under the Act will be relied upon, when the
    Prospectus has been filed in accordance with said Rule 430A and when any
    post-effective amendment to the Registration Statement becomes effective,
    (B) of any request made by the Commission for amending the Registration
    Statement, for supplementing any Preliminary Prospectus or the Prospectus
    or for additional information or (C) of the issuance by the Commission of
    any stop order suspending the effectiveness of the Registration Statement
    or any post-effective amendment thereto or any order preventing or
    suspending the use of any Preliminary Prospectus or the Prospectus or any
    amendment or supplement thereto or the institution or threat of any
    investigation or proceeding for that purpose, and will use its best efforts


                                         -12-

<PAGE>


    to prevent the issuance of any such order and, if issued, to obtain the
    lifting thereof as soon as possible.

              (iii)     The Company will (A) use its best efforts to arrange
    for the qualification of the Shares for offer and sale under the state
    securities or blue sky laws of such jurisdictions as the Representatives
    may designate, (B) continue such qualifications in effect for as long as
    may be necessary to complete the distribution of the Shares, and (C) make
    such applications, file such documents and furnish such information as may
    be required for the purposes set forth in clauses (A) and (B); PROVIDED,
    HOWEVER, that the Company shall not be required to qualify as a foreign
    corporation or file a general or unlimited consent to service of process in
    any such jurisdiction.

              (iv)      The Company consents to the use of the Prospectus (and
    any amendment or supplement thereto) by the Underwriters and all dealers to
    whom the Shares may be sold, in connection with the offering or sale of the
    Shares and for such period of time thereafter as the Prospectus is required
    by law to be delivered in connection therewith.  If, at any time when a
    prospectus relating to the Shares is required to be delivered under the
    Act, any event occurs as a result of which the Prospectus, as then amended
    or supplemented, would include any untrue statement of a material fact or
    omit to state a material fact necessary to make the statements therein not
    misleading, or if it becomes necessary at any time to amend or supplement
    the Prospectus to comply with the Act or the Rules and Regulations, the
    Company promptly will so notify the Representatives and, subject to Section
    5(a)(i) hereof, will prepare and file with the Commission an amendment to
    the Registration Statement or an amendment or supplement to the Prospectus
    which will correct such statement or omission or effect such compliance,
    each such amendment or supplement to be reasonably satisfactory to counsel
    to the Underwriters.

              (v)       As soon as practicable, but in any event not later than
    45 days after the end of the 12-month period beginning on the day after the
    end of the fiscal quarter of the Company during which the effective date of
    the Registration Statement occurs (90 days in the event that the end of
    such fiscal quarter is the end of the Company's fiscal year), the Company
    will make generally available to its security holders, in the manner
    specified in Rule 158(b) of the Rules and Regulations, and to the
    Representatives, an earnings statement which will be in the detail required
    by, and will otherwise comply with, the provisions of Section 11(a) of the
    Act and Rule 158(a) of the Rules and Regulations, which statement need not
    be audited unless required by the Act or the Rules and Regulations,
    covering a period of at least 12 consecutive months after the effective
    date of the Registration Statement.

              (vi)      During a period of five years after the date hereof,
    the Company will furnish to its stockholders, as soon as practicable,
    annual reports (including financial statements audited by independent
    public accountants) and unaudited quarterly reports of earnings, and will
    deliver to the Representatives:

                                     -13-


<PAGE>

              (A)  concurrently with furnishing such quarterly reports to its
    stockholders, statements of income of the Company for each quarter in the
    form furnished to the Company's stockholders and certified by the Company's
    principal financial or accounting officer;

              (B)  concurrently with furnishing such annual reports to its
    stockholders, a balance sheet of the Company as at the end of the preceding
    fiscal year, together with statements of operations, stockholders' equity,
    and cash flows of the Company for such fiscal year, accompanied by a copy
    of the report thereon of independent public accountants;

              (C)  as soon as they are available, copies of all information
    (financial or other) mailed to stockholders;

              (D)  as soon as they are available, copies of all reports and
    financial statements furnished to or filed with the Commission, the
    National Association of Securities Dealers, Inc. ("NASD") or any securities
    exchange;

              (E)  every press release and every material news item or article
    of interest to the financial community in respect of the Company or its
    affairs which was released or prepared by the Company; and

              (F)  any additional information of a public nature concerning the
    Company or its business which the Representatives may reasonably request.

         During such five-year period, if the Company has active subsidiaries,
the foregoing financial statements will be on a consolidated basis to the extent
that the accounts of the Company and its subsidiaries are consolidated, and will
be accompanied by similar financial statements for any significant subsidiary
which is not so consolidated.

              (vii)     The Company will maintain a Transfer Agent and, if
    necessary under the jurisdiction of incorporation of the Company, a
    Registrar (which may be the same entity as the Transfer Agent) for its
    Common Stock.

              (viii)    The Company will furnish, without charge, to the
    Representatives or on the Representatives' order, at such place as the
    Representatives may designate, copies of the each Preliminary Prospectus,
    the Registration Statement and any pre-effective or post-effective
    amendments thereto, and any registration statement filed pursuant to Rule
    462(b) (two of which copies will be signed and will include all financial
    statements and exhibits) and the Prospectus, and all amendments and
    supplements thereto, including any Term Sheet, in each case as soon as
    available and in such quantities as the Representatives may reasonably
    request.  The Company will provide or cause to be provided to the
    Representatives and upon request to each Underwriter, a


                                         -14-

<PAGE>


    copy of the report on Form SR filed by the Company as required by Rule 463
    under the Act.

              (ix)      The Company will not, directly or indirectly, without
    the prior written consent of the Furman Selz LLC, on behalf of the
    Underwriters, issue, offer, sell, offer to sell, contract to sell, grant
    any option to purchase, pledge or otherwise dispose (or announce any
    issuance, offer, sale, offer of sale, contract of sale, grant of any option
    to purchase, pledge or other disposition) of any shares of Common Stock or
    any securities convertible into, or exchangeable or exercisable for, shares
    of Common Stock for a period of 180 days after the date hereof, except
    pursuant to this Agreement, except for issuances pursuant to the exercise
    of stock options outstanding on or granted subsequent to the date hereof,
    pursuant to a stock option or other employee benefit plan in existence on
    the date hereof and except as described in the Prospectus.

              (x)       The Company will cause the Shares to be duly approved
    for listing on the NNM prior to the Closing Date.

              (xi)      Neither the Company nor any of its officers or
    directors, nor affiliates of any of them (within the meaning of the Rules
    and Regulations) will take, directly or indirectly, any action designed to,
    or which might in the future reasonably be expected to, cause or result in,
    or which will constitute, stabilization or manipulation of the price of any
    securities of the Company.

              (xii)     The Company will apply the net proceeds of the offering
    received by it in the manner set forth under the caption "Use of Proceeds"
    in the Prospectus.

              (xiii)    The Company will timely file all such reports, forms or
    other documents as may be required from time to time, under the Act, the
    Rules and Regulations, the Exchange Act and the rules and regulations
    thereunder, and all such reports, forms and documents filed will comply as
    to form and substance with the applicable requirements under the Act, the
    Rules and Regulations, the Exchange Act and the rules and regulations
    thereunder.

         (b)  The Selling Stockholder covenants and agrees with each of the
Underwriters that:

              (i)  The Selling Stockholder will not, will not, directly or
    indirectly, without the prior written consent of the Furman Selz LLC, on
    behalf of the Underwriters, issue, offer, sell, offer to sell, contract to
    sell, grant any option to purchase, pledge or otherwise dispose (or
    announce any issuance, offer, sale, offer of sale, contract of sale, grant
    of any option to purchase, pledge or other disposition) of any shares of
    Common Stock or any securities convertible into, or exchangeable or
    exercisable for, shares of Common Stock for a period of 180 days after the
    date hereof, and will not take, directly or indirectly, any action designed
    to, or which might in the


                                         -15-

<PAGE>


    foreseeable future reasonably be expected to cause or result in,
    stabilization of manipulation of the price of any securities of the
    Company.


                (ii)    The Selling Stockholder consents to the use of the
    Prospectus and any amendment or supplement thereto by the Underwriters and
    all dealers to whom the Shares may be sold, both in connection with the
    offering or sale of the Shares and for such period of time thereafter as
    the Prospectus is required by law to be delivered in connection therewith.

    6.   EXPENSES.

         (a)  Regardless of whether the transactions contemplated in this
Agreement are consummated, and regardless of whether for any reason this
Agreement is terminated, the Company will pay, and hereby agrees to indemnify
each Underwriter against, all fees and expenses incident to the performance of
the obligations of the Company and the Selling Stockholder under this Agreement,
including, but not limited to, (i) fees and expenses of accountants and counsel
for the Company and the Selling Stockholder, (ii) all costs and expenses
incurred in connection with the preparation, duplication, printing, filing,
delivery and shipping of copies of the Registration Statement and any pre-
effective or post-effective amendments thereto, any registration statement filed
pursuant to Rule 462(b), any Preliminary Prospectus and the Prospectus and any
amendments or supplements thereto (including postage costs related to the
delivery by the Underwriters of any Preliminary Prospectus or Prospectus, or any
amendment or supplement thereto), this Agreement, the Agreement Among
Underwriters, any Selected Dealer Agreement, Underwriters' Questionnaire,
Underwriters' Power of Attorney and all other documents in connection with the
transactions contemplated herein, including the cost of all copies thereof,
(iii) fees and expenses relating to qualification of the Shares under state
securities or blue sky laws, including the cost of preparing and mailing the
preliminary and final blue sky memoranda and filing fees and disbursements and
fees of counsel and other related expenses, if any, in connection therewith,
(iv) filing fees of the Commission and the NASD relating to the Shares, (v) any
fees and expenses in connection with the listing of the Shares on the NNM, (vi)
costs and expenses incident to the preparation, issuance and delivery to the
Underwriters of any certificates evidencing the Shares, including transfer
agent's and registrar's fees and any applicable transfer taxes incurred in
connection with the delivery to the Underwriters of the Shares to be sold by the
Company and the Selling Stockholder pursuant to this Agreement and (vii) costs
and expenses incident to any meetings with prospective investors in the Shares
(other than as shall have been specifically approved by the Representatives to
be paid for by the Underwriters).

         (b)  If the purchase of the Shares as herein contemplated is not
consummated for any reason other than the Underwriters' default under this
Agreement or other than by reason of Section 11(a), the Company shall reimburse
the several Underwriters for their out-of-pocket expenses (including reasonable
counsel fees and disbursements) in connection with any investigation made by
them, and any preparation made by them in respect of marketing of the Shares or
in contemplation of the performance by them of their obligations hereunder.


                                         -16-

<PAGE>


    7.   CONDITIONS OF THE UNDERWRITERS' OBLIGATIONS.  The obligation of each
Underwriter to purchase and pay for the Shares set forth opposite the name of
such Underwriter in Schedule I is subject to the continuing accuracy of the
representations and warranties of the Company and the Selling Stockholder herein
as of the date hereof and as of the Closing Date as if they had been made on and
as of the Closing Date; the accuracy on and as of the Closing Date of the
statements of officers of the Company and the Selling Stockholder made pursuant
to the provisions hereof; the performance by the Company and the Selling
Stockholder on and as of the Closing Date of their respective covenants and
agreements hereunder; and the following additional conditions:

         (a)  If the Company has elected to rely on Rule 430A under the Act,
the Registration Statement shall have been declared effective, and the
Prospectus (containing the information omitted pursuant to Rule 430A) shall have
been filed with the Commission not later than the Commission's close of business
on the second business day following the date hereof or such later time and date
to which the Representatives shall have consented; if the Company does not elect
to rely on Rule 430A, the Registration Statement shall have been declared
effective not later than 11:00 a.m., New York time, on the date hereof or such
later time and date to which the Representatives shall have consented; if
required, in the case of any changes in or amendments or supplements to the
Prospectus in addition to those contemplated above, the Company shall have filed
such Prospectus or any Term Sheet that constitutes a part thereof as amended or
supplemented with the Commission in the manner and within the time period
required by Rules 424(b) and 434 under the Act; no stop order suspending the
effectiveness of the Registration Statement or any amendment thereto shall have
been issued, and no proceedings for that purpose shall have been instituted or
threatened or, to the knowledge of the Company or the Representatives, shall be
contemplated by the Commission; and the Company shall have complied with any
request of the Commission for additional information (to be included in the
Registration Statement or the Prospectus or otherwise).

         (b)  The Representatives shall not have advised the Company that the
Registration Statement, or any amendment thereto, contains an untrue statement
of fact which, in the Representatives' opinion, is material, or omits to state a
fact which, in the Representatives' opinion, is material and is required to be
stated therein or is necessary to make the statements therein not misleading, or
that the Prospectus, or any supplement thereto, contains an untrue statement of
fact which, in the Representatives' opinion, is material, or omits to state a
fact which, in the Representatives' opinion, is material and is required to be
stated therein or is necessary to make the statements therein, in the light of
the circumstances under which they were made, not misleading.

         (c)  On or prior to the Closing Date, the Representatives shall have
received from counsel to the Underwriters, such opinion or opinions with respect
to the issuance and sale of the Firm Shares, the Registration Statement and the
Prospectus and such other related matters as the Representatives reasonably may
request and such counsel shall have received such documents and other
information as they request to enable them to pass upon such matters.


                                         -17-

<PAGE>


         (d)  On the Closing Date the Underwriters shall have received the
opinion, dated the Closing Date, of Venable, Baetjer and Howard, LLP, counsel to
the Company, to the effect set forth below:

              (i)       The Company (A) is a duly organized and validly
    existing corporation in good standing under the laws of its jurisdiction of
    incorporation with full power and authority (corporate and other) to own or
    lease its properties and to conduct its business as described in the
    Prospectus, and (B) is duly qualified to do business as a foreign
    corporation and is in good standing in each jurisdiction in which it owns
    or leases property;

              (ii)      The Company has authorized capital stock as set forth
    in the Prospectus; the securities of the Company conform in all material
    respects to the description thereof contained in the Prospectus; the
    outstanding shares of Common Stock have been duly authorized and validly
    issued by the Company, are fully paid and nonassessable, and are free of
    any preemptive or other rights to subscribe for any of the Shares pursuant
    to the Company's charter or by-laws or any agreement known to such counsel
    after reasonable investigation and due inquiry; the Company has duly
    authorized the issuance and sale of the Shares to be sold by it hereunder;
    such Shares, when issued by the Company and paid for in accordance with the
    terms hereof, will be validly issued, fully paid and nonassessable and will
    conform in all material respects to the description thereof contained in
    the Prospectus and will not be subject to any preemptive, subscription or
    other similar rights pursuant to the Company's charter or by-laws or any
    agreement known to such counsel after reasonable investigation and due
    inquiry; and the Shares have been duly approved for listing on the NNM;

              (iii)     The Registration Statement is effective under the Act;
    any required filing of a registration statement pursuant to Rule 462(b) has
    been in the manner and within the time period required by Rule 462(b); any
    required filing of the Prospectus or any Term Sheet that constitutes a part
    thereof pursuant to Rules 424(b) and 434 has been made in the manner and
    within the time periods required by Rules 424(b) and 434; and no stop order
    suspending the effectiveness of the Registration Statement or any amendment
    thereto has been issued, and no proceedings for that purpose have been
    instituted or are pending or, to the best knowledge of such counsel, are
    threatened or contemplated under the Act; the registration statement
    originally filed with respect to the Shares and each amendment thereto and
    the Prospectus and, if any, each amendment and supplement thereto (except
    for the financial statements, schedules and other financial data included
    therein, as to which such counsel need not express any opinion), complied
    as to form in all material respects with the requirements of the Act and
    the Rules and Regulations; the descriptions contained and summarized in the
    Registration Statement and the Prospectus of contracts and other documents,
    are accurate and fairly represent in all material respects the information
    required to be shown by the Act and the Rules and Regulations; to the best
    knowledge of such counsel, there are no contracts or documents which are
    required by the Act to be described in the Registration Statement or the


                                         -18-

<PAGE>


    Prospectus or to be filed as exhibits to the Registration Statement which
    are not described or filed as required by the Act and the Rules and
    Regulations; to the best knowledge of such counsel, there is not pending or
    threatened against the Company any action, suit, proceeding or
    investigation before or by any court, regulatory body, or administrative
    agency or any other governmental agency or body, domestic or foreign, of a
    character required to be disclosed in the Registration Statement or the
    Prospectus which is not so disclosed therein; and the statements set forth
    under the captions "Management," "Certain Transactions," "Description of
    Capital Stock," "Certain Charter and By-Law Provisions" and "Shares
    Eligible for Future Sale" in the Prospectus, insofar as such statements
    constitute a summary of the legal matters, documents or proceedings
    referred to therein, provide a summary of such legal matters, documents and
    proceedings which is accurate in all material respects;

                (iv)    The Company has full legal right, power, and authority
    to enter into this Agreement and to consummate the transactions provided
    for herein; this Agreement has been duly authorized, executed and delivered
    by the Company; and this Agreement, assuming due authorization, execution
    and delivery by each other party hereto, is a valid and binding agreement
    of the Company, enforceable in accordance with its terms, except as limited
    by applicable bankruptcy, insolvency, reorganization, moratorium or other
    laws now or hereafter in effect relating to or affecting creditors' rights
    generally or by general principles of equity relating to the availability
    of remedies and except as rights to indemnity and contribution may be
    limited by federal or state securities laws or the public policy underlying
    such laws.  None of the Company's execution or delivery of this Agreement,
    its performance hereof, its consummation of the transactions contemplated
    herein or its application of the net proceeds of the offering in the manner
    set forth under the caption "Use of Proceeds" in the Prospectus, conflicts
    or will conflict with or results or will result in any breach or violation
    of any of the terms or provisions of, or constitute a default under, or
    result in the creation or imposition of any lien, charge or encumbrance
    upon, any property or assets of the Company pursuant to the terms of the
    charter or by-laws of the Company; the terms of any indenture, mortgage,
    deed of trust, voting trust agreement, stockholder's agreement, note
    agreement or other agreement or instrument known to such counsel after
    reasonable investigation to which the Company is a party or by which it is
    or may be bound or to which any of its properties may be subject; any
    statute, rule or regulation of any regulatory body or administrative agency
    or other governmental agency or body, domestic or foreign, having
    jurisdiction over the Company or any of its activities or properties; or
    any judgment, decree or order, known to such counsel after reasonable
    investigation, of any government, arbitrator, court, regulatory body or
    administrative agency or other governmental agency or body, domestic or
    foreign, having such jurisdiction; and no consent, approval, authorization
    or order of any court, regulatory body or administrative agency or other
    governmental agency or body, domestic or foreign, has been or is required
    for the Company's performance of this Agreement or the consummation of the
    transactions contemplated hereby, except such as have been


                                         -19-

<PAGE>


    obtained under the Act or may be required under state securities or blue
    sky laws in connection with the purchase and distribution by the
    Underwriters of the Shares;

              (v)       To the best of such counsel's knowledge, the conduct of
    the businesses of the Company is not in violation of any federal, state or
    local statute, administrative regulation or other law, which violation is
    likely to have a Material Adverse Effect; and the Company has obtained all
    licenses, permits, franchises, certificates and other authorizations from
    state, federal and other regulatory authorities as are necessary or
    required for the ownership, leasing and operation of its properties and the
    conduct of its business as presently conducted and as contemplated in the
    Prospectus; and

              (vi)      The Company owns, or is licensed or otherwise has
    sufficient rights to use, the Rights used in, or necessary for, the conduct
    of its business as described in the Prospectus.  To the best of such
    counsel's knowledge, except as described in the Prospectus, no claims have
    been asserted against the Company by any person to the use of any such
    Rights or challenging or questioning the validity or effectiveness of any
    such Rights.  The use, in connection with the business and operations of
    the Company of such Rights does not, to the best of such counsel's
    knowledge, infringe on the rights of any person.

         In addition, such counsel shall state that in the course of the
preparation of the Registration Statement and the Prospectus, such counsel has
participated in conferences with officers and representatives of the Company and
with the Company's independent public accountants, at which conferences such
counsel made inquiries of such officers, representatives and accountants and
discussed the contents of the Registration Statement and the Prospectus and
(without taking any further action to verify independently the statements made
in the Registration Statement and the Prospectus and, except as stated in the
foregoing opinion, without assuming responsibility for the accuracy,
completeness or fairness of such statements) nothing has come to such counsel's
attention that causes such counsel to believe that either the Registration
Statement as of the date it is declared effective and as of the Closing Date
contained or contains any untrue statement of a material fact or omitted or
omits to state a material fact required to be stated therein or necessary to
make the statements therein not misleading or the Prospectus as of the date
thereof and as of the Closing Date contained or contains any untrue statement of
a material fact or omitted or omits to state a material fact required to be
stated therein or necessary to make the statements therein, in the light of the
circumstances under which they were made, not misleading (it being understood
that such counsel need not express any belief with respect to the financial
statements, schedules and other financial data included in the Registration
Statement or the Prospectus).

         In rendering any such opinion, such counsel may rely, as to matters of
fact, to the extent such counsel deems proper, on certificates of responsible
officers of the Company and public officials, or as to intellectual property (to
the extent satisfactory in form and scope to counsel for the Underwriters) such
counsel may rely upon or substitute the opinion of Rothwell, Figg, Ernst & Kurz.
The foregoing opinion shall also state that the Underwriters are justified in
relying upon such opinion of Rothwell,


                                         -20-

<PAGE>


Figg, Ernst & Kurz, and copies of such opinion shall be delivered to the
Representatives and counsel for the Underwriters.

         References to the Registration Statement and the Prospectus in this
paragraph (d) shall include any amendment or supplement thereto at the date of
such opinion.

         (e)  On or prior to the Closing Date, counsel to the Underwriters
shall have been furnished such documents, certificates and opinions as they may
reasonably require in order to evidence the accuracy, completeness or
satisfaction of any of the representations or warranties of the Company or the
Selling Stockholder, or conditions herein contained.

         (f)  At the time that this Agreement is executed by the Company the
Underwriters shall have received from Price Waterhouse LLP a letter as of the
date this Agreement is executed by the Company in form and substance
satisfactory to you (the "Original Letter"), and on the Closing Date the
Underwriters shall have received from such firm a letter dated the Closing Date
stating that, as of a specified date not earlier than five days prior to the
Closing Date, nothing has come to the attention of such firm to suggest that the
statements made in the Original Letter are not true and correct.

         (g)  On the Closing Date, the Underwriters shall have received a
certificate, dated the Closing Date, of the principal executive officer and the
principal financial or accounting officer of the Company to the effect that each
of such persons has carefully examined the Registration Statement and the
Prospectus and any amendments or supplements thereto and this Agreement, and
that:

              (i)       The representations and warranties of the Company in
    this Agreement are true and correct, as if made on and as of the Closing
    Date, and the Company has complied with all agreements and covenants and
    satisfied all conditions contained in this Agreement on its part to be
    performed or satisfied at or prior to the Closing Date;

              (ii)      No stop order suspending the effectiveness of the
    Registration Statement has been issued, and no proceedings for that purpose
    have been instituted or are pending or, to the best knowledge of each of
    such persons, are contemplated or threatened under the Act and any and all
    filings required by Rule 424, Rule 430A, Rule 434 and Rule 462(b) have been
    timely made;

              (iii)     The Registration Statement and Prospectus and, if any,
    each amendment and each supplement thereto, contain all statements and
    information required to be included therein, and neither the Registration
    Statement nor any amendment thereto includes any untrue statement of a
    material fact or omits to state any material fact required to be stated
    therein or necessary to make the statements therein not misleading and
    neither the Prospectus (or any supplement thereto) or any Preliminary
    Prospectus


                                         -21-

<PAGE>


    includes or included any untrue statement of a material fact or omits or
    omitted to state any material fact required to be stated therein or
    necessary to make the statements therein, in the light of the circumstances
    under which they were made, not misleading; and

              (iv)      Subsequent to the respective dates as of which
    information is given in the Registration Statement and the Prospectus up to
    and including the Closing Date, the Company has not incurred, other than in
    the ordinary course of its business or as described in the Prospectus or in
    an amended or supplemented Prospectus, any material liabilities or
    obligations, direct or contingent; the Company has not purchased any of its
    outstanding capital stock or paid or declared any dividends or other
    distributions on its capital stock; the Company has not entered into any
    transactions not in the ordinary course of business; and there has not been
    any change in the capital stock or long-term debt or any increase in the
    short-term borrowings (other than any increase in short-term borrowings in
    the ordinary course of business) of the Company or any material adverse
    change to the business, properties, assets, net worth, condition (financial
    or other), results of operations or prospects of the Company; the Company
    has not sustained any material loss or damage to its property or assets,
    whether or not insured; there is no litigation which is pending or
    threatened against the Company which is required under the Act or the Rules
    and Regulations to be set forth in an amended or supplemented Prospectus
    which has not been set forth; and there has not occurred any event required
    to be set forth in an amended or supplemented Prospectus which has not been
    set forth.

              References to the Registration Statement and the Prospectus in
    this paragraph (g) are to such documents as amended and supplemented at the
    date of the certificate.

         (h)  Subsequent to the respective dates as of which information is
given in the Registration Statement and the Prospectus up to and including the
Closing Date there has not been (i) any change or decrease specified in the
letter or letters referred to in paragraph (f) of this Section 7 or (ii) any
change, or any development involving a prospective change, in the business or
properties of the Company which change or decrease in the case of clause (i) or
change or development in the case of clause (ii) makes it impractical or
inadvisable in the Representatives' judgment to proceed with the public offering
or the delivery of the Shares as contemplated by the Prospectus.

         (i)  No order suspending the sale of the Shares in any jurisdiction
designated by you pursuant to Section 5(a)(iii)(A) hereof has been issued on or
prior to the Closing Date and no proceedings for that purpose have been
instituted or, to your knowledge or that of the Company, have been or are
contemplated.


                                         -22-

<PAGE>


         (j)  On the Closing Date, the Underwriters shall have received the
opinion, dated the Closing Date, of Buchanan Ingersoll PC, in its capacity as
counsel for the Selling Stockholder, to the effect set forth below:

              (i)       The Selling Stockholder has full legal right, power and
    authority to enter into this Agreement and to sell, assign, transfer and
    deliver in the manner provided herein the Shares sold by the Selling
    Stockholder; this Agreement has been duly executed and delivered by the
    Selling Stockholder; and this Agreement, assuming due authorization,
    execution and delivery by each other party hereto and further assuming it
    is a valid and binding agreement of each of the Underwriters, is a valid
    and binding agreement of the Selling Stockholder, enforceable against the
    Selling Stockholder in accordance with its terms (except as may be limited
    by applicable bankruptcy, insolvency, reorganization, moratorium or other
    laws now or hereafter in effect relating to or affecting creditors' rights
    generally and by general principles of equity relating to the availability
    of remedies and except as rights to indemnity and contribution may be
    limited by federal or state securities laws and the public policy
    underlying such laws);

              (ii)      None of the execution, delivery or performance of this
    Agreement by the Selling Stockholder and the consummation by the Selling
    Stockholder of the transactions herein contemplated, conflict with or
    result in a breach of, or default under, any indenture, mortgage, deed of
    trust, voting trust agreement, stockholders agreement, note agreement or
    other agreement or other instrument known to such counsel to which the
    Selling Stockholder is a party or by which the Selling Stockholder is bound
    or to which any of the property of the Selling Stockholder is subject, and
    nothing has come to such counsel's attention which causes such counsel to
    believe that such actions will result in any violation of any law, rule,
    administrative regulation or court decree applicable to such Selling
    Stockholder (other than state securities or blue sky laws or regulations,
    as to which such counsel need not express any opinion); and

              (iii)     Upon the delivery of the Shares to be sold hereunder by
    the Selling Stockholder and payment therefor in accordance with the terms
    of this Agreement and assuming that each of the Underwriters which has
    severally purchased such Shares acquires such Shares without notice of any
    adverse claim (within the meaning of the Uniform Commercial Code), such
    Underwriter will have acquired all of the rights of the Selling Stockholder
    to the Shares sold by the Selling Stockholder hereunder, and in addition
    will have acquired title to such Shares free and clear of any adverse
    claim.

              References to the Registration Statement and the Prospectus in
this paragraph (j) shall include any amendment or supplement thereto at the date
of such opinion.

         (k)  On the Closing Date, the Underwriters shall have received a
certificate, dated the Closing Date, from the Selling Stockholder to the effect
that the Selling Stockholder has carefully examined the Registration Statement
and the Prospectus and any amendments or supplements thereto and this Agreement,
and that:


                                         -23-

<PAGE>


              (i)       The representations and warranties of the Selling
    Stockholder in this Agreement are true and correct, as if made at and as of
    the Closing Date, and the Selling Stockholder has complied with all the
    agreements and satisfied all the conditions to be performed or satisfied by
    the Selling Stockholder at or prior to the Closing Date; and

              (ii)      The Registration Statement and Prospectus and, if any,
    each amendment and each supplement thereto, contain all statements required
    to be included therein regarding the Selling Stockholder, and none of the
    Registration Statement nor any amendment thereto includes any untrue
    statement of a material fact regarding the Selling Stockholder or omits to
    state any material fact regarding the Selling Stockholder required to be
    stated therein or necessary to make the statements therein regarding the
    Selling Stockholder not misleading, and neither the Prospectus (and any
    supplements thereto) or any Preliminary Prospectus includes or included any
    untrue statement of a material fact regarding the Selling Stockholder or
    omits or omitted to state a material fact regarding the Selling Stockholder
    required to be stated therein or necessary in order to make the statements
    therein regarding the Selling Stockholder, in the light of the
    circumstances under which they were made, not misleading.

         (l)  The Representatives shall have received from each person who is a
director or officer of the Company or who owns more than 1% of the outstanding
shares of Common Stock on a fully diluted basis an agreement to the effect that
such person will not, directly or indirectly, without the prior written consent
of Furman Selz LLC, on behalf of the Underwriters, offer, sell, offer to sell,
contract to sell, grant any option to purchase, pledge or otherwise dispose (or
announce any offer, sale, offer of sale, contract of sale, grant of an option to
purchase, pledge or other disposition) of any shares of Common Stock or any
securities convertible into, or exchangeable or exercisable for, shares of
Common Stock for a period of 180 days after the date of this Agreement.

         (m)  The Company and the Selling Stockholder shall have furnished the
Underwriters with such further opinions, letters, certificates or documents as
you or counsel for the Underwriters may reasonably request.  All opinions,
certificates, letters and documents to be furnished by the Company and the
Selling Stockholder will comply with the provisions hereof only if they are
reasonably satisfactory in all material respects to the Underwriters and to
counsel for the Underwriters.  The Company and the Selling Stockholder shall
furnish the Underwriters with conformed copies of such opinions, certificates,
letters and documents in such quantities as you reasonably request.  The
certificates delivered under this Section 7 shall constitute representations,
warranties and agreements of the Company and the Selling Stockholder, as the
case may be, as to all matters set forth therein as fully and effectively as if
such matters had been set forth in Section 2 of this Agreement.

         (n)  The Shares shall have been duly authorized for listing on the
NNM.


                                         -24-

<PAGE>


         (o)  The Company shall have made all filings necessary to effect the
amendments to its charter as described in the Prospectus.

    8.   INDEMNIFICATION.

         (a)  The Company and the Selling Stockholder, jointly and severally,
agree to indemnify and hold harmless each Underwriter and each person, if any,
who controls such Underwriter within the meaning of Section 15 of the Act or
Section 20 of the Exchange Act, against any and all losses, claims, damages or
liabilities, joint or several (and actions in respect thereof), to which such
Underwriter or such controlling person may become subject, under the Act or
other federal or state statutory law or regulation, at common law or otherwise,
insofar as such losses, claims, damages, liabilities or actions arise out of or
are based upon any untrue statement or alleged untrue statement of any material
fact contained in the Registration Statement or the Prospectus or any
Preliminary Prospectus, or any amendment or supplement thereto, or any blue sky
application or other document executed by the Company specifically for the
purpose of qualifying, or based upon written information furnished by the
Company or the Selling Stockholder filed in any state or other jurisdiction in
order to qualify, any or all of the Shares under the securities or blue sky laws
thereof (any such application, document or information being hereinafter called
a "Blue Sky Application"), or arise out of or are based upon the omission or
alleged omission to state therein a material fact required to be stated therein
or necessary to make the statements not misleading and will reimburse, as
incurred, such Underwriter or such controlling persons for any legal or other
expenses incurred by such Underwriter or such controlling persons in connection
with investigating, defending or appearing as a third party witness in
connection with any such loss, claim, damage, liability or action; PROVIDED,
HOWEVER, that the obligations of the Selling Stockholder pursuant to this
Section 8(a) shall apply only with respect to information provided by the
Selling Stockholder for inclusion in such documents, and PROVIDED, FURTHER, that
the Company and the Selling Stockholder will not be liable in any such case to
the extent that any such loss, claim, damage, liability or action arises out of
or is based upon any untrue statement or alleged untrue statement or omission or
alleged omission made in any of such documents in reliance upon and in
conformity with information furnished in writing to the Company on behalf of
such Underwriter through the Representatives expressly for use therein, and
PROVIDED, FURTHER, that such indemnity with respect to any Preliminary
Prospectus shall not inure to the benefit of any Underwriter (or to the benefit
of any person controlling such Underwriter) from whom the person asserting any
such loss, claim, damage, liability or action purchased Shares which are the
subject thereof to the extent that any such loss, claim, damage, liability or
action (i) results from the fact that such Underwriter failed to send or give a
copy of the Prospectus (as amended or supplemented) to such person at or prior
to the confirmation of the sale of such Shares to such person in any case where
such delivery is required by the Act and (ii) arises out of or is based upon an
untrue statement or omission of a material fact contained in such Preliminary
Prospectus that was corrected in the Prospectus (as amended and supplemented),
unless such failure resulted from non-compliance by the Company with Section
5(a)(viii) hereof.


                                         -25-

<PAGE>


         The indemnity agreement in this paragraph (a) shall be in addition to
any liability which the Company and the Selling Stockholder may otherwise have.

         (b)  Each of the Underwriters agrees severally, but not jointly, to
indemnify and hold harmless the Company, each of its directors, each of its
officers who has signed the Registration Statement, each person, if any, who
controls the Company within the meaning of Section 15 of the Act or Section 20
of the Exchange Act and the Selling Stockholder against any and all losses,
claims, damages or liabilities (and actions in respect thereof) to which the
Company or the Selling Stockholder, any such director, officer, or controlling
person may become subject, under the Act or other federal or state statutory law
or regulation, at common law or otherwise, insofar as such losses, claims,
damages, liabilities or actions arise out of or are based upon any untrue
statement or alleged untrue statement of any material fact contained in the
Registration Statement or the Prospectus or any Preliminary Prospectus, or any
amendment or supplement thereto or in any Blue Sky Application, or arise out of
or are based upon the omission or the alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
not misleading, in each case to the extent, but only to the extent, that such
untrue statement or alleged untrue statement or omission or alleged omission was
made in reliance upon and in conformity with information furnished in writing by
that Underwriter through the Representatives to the Company expressly for use
therein; and will reimburse, as incurred, all legal or other expenses reasonably
incurred by the Company or the Selling Stockholder, any such director, officer,
controlling person in connection with investigating or defending any such loss,
claim, damage, liability or action.  The Company and the Selling Stockholder
acknowledge that the statements with respect to the public offering of the
Shares set forth in the third and the penultimate paragraphs under the caption
"Underwriting" and the stabilization legend in the Prospectus have been
furnished by the Underwriters to the Company expressly for use therein and
constitute the only information furnished in writing by or on behalf of the
Underwriters for inclusion in the Prospectus.

         The indemnity agreement contained in this paragraph (b) shall be in
addition to any liability which the Underwriters may otherwise have.

         (c)  Promptly after receipt by an indemnified party under this Section
8 of notice of the commencement of any action, such indemnified party will, if a
claim in respect thereof is to be made against one or more indemnifying parties
under this Section 8, notify such indemnifying party or parties of the
commencement thereof; but the failure so to notify the indemnifying party shall
not relieve it from any liability which it may have to any indemnified party
otherwise than under paragraph (a) or (b) of this Section 8 or to the extent
that the indemnifying party was not adversely affected by such omission.  In
case any such action is brought against an indemnified party and it notifies an
indemnifying party or parties of the commencement thereof, the indemnifying
party or parties against which a claim is to be made will be entitled to
participate therein and, to the extent that it or they may wish, to assume the
defense thereof, with counsel reasonably satisfactory to such indemnified party;
PROVIDED, HOWEVER, that if the defendants in any such action include both the
indemnified party and the indemnifying party and the indemnified party has
reasonably concluded that there may be legal


                                         -26-

<PAGE>


defenses available to it and/or other indemnified parties which are different
from or additional to those available to the indemnifying party, the indemnified
party or parties shall have the right to select separate counsel to assume such
legal defenses and otherwise to participate in the defense of such action on
behalf of such indemnified party or parties.  Upon receipt of notice from the
indemnifying party to such indemnified party of its election so to assume the
defense of such action and approval by the indemnified party of counsel, the
indemnifying party will not be liable to such indemnified party under this
Section 8 for any legal or other expenses (other than the reasonable costs of
investigation) subsequently incurred by such indemnified party in connection
with the defense thereof unless (i) the indemnified party has employed such
counsel in connection with the assumption of such different or additional legal
defenses in accordance with the proviso to the immediately preceding sentence,
(ii) the indemnifying party has not employed counsel reasonably satisfactory to
the indemnified party to represent the indemnified party within a reasonable
time after notice of commencement of the action, or (iii) the indemnifying party
has authorized in writing the employment of counsel for the indemnified party at
the expense of the indemnifying party.

         (d)  If the indemnification provided for in this Section 8 is
unavailable or insufficient to hold harmless an indemnified party under
paragraph (a) or (b) above in respect of any losses, claims, damages, expenses
or liabilities (or actions in respect thereof) referred to therein, then each
indemnifying party shall contribute to the amount paid or payable by such
indemnified party as a result of such losses, claims, damages or liabilities (or
actions in respect thereof) (i) in such proportion as is appropriate to reflect
the relative benefits received by each of the contributing parties, on the one
hand, and the party to be indemnified, on the other hand, from the offering of
the Shares or (ii) if the allocation provided by clause (i) above is not
permitted by applicable law, in such proportion as is appropriate to reflect not
only the relative benefits referred to in clause (i) above but also the relative
fault of each of the contributing parties, on the one hand, and the party to be
indemnified, on the other hand in connection with the statements or omissions
that resulted in such losses, claims, damages or liabilities, as well as any
other relevant equitable considerations.  In any case where the Company and/or
the Selling Stockholder are contributing parties and the Underwriters are the
indemnified party, the relative benefits received by the Company and/or the
Selling Stockholder on the one hand, and the Underwriters, on the other, shall
be deemed to be in the same proportion as the total net proceeds from the
offering of the Shares (before deducting expenses) bear to the total
underwriting discounts received by the Underwriters hereunder, in each case as
set forth in the table on the cover page of the Prospectus.  Relative fault
shall be determined by reference to, among other things, whether the untrue or
alleged untrue statement of a material fact or the omission or alleged omission
to state a material fact relates to information supplied by the Company or the
Selling Stockholder or by the Underwriters, and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
untrue statement or omission.  The amount paid or payable by an indemnified
party as a result of the losses, claims, damages or liabilities (or actions in
respect thereof) referred to above in this paragraph (d) shall be deemed to
include any legal or other expenses reasonably incurred by such indemnified
party in connection with investigating or defending any such action or claim.
Notwithstanding the provisions of this paragraph (d), the Underwriters shall not
be required to


                                         -27-

<PAGE>


contribute any amount in excess of the underwriting discount applicable to the
Shares purchased by the Underwriters hereunder.  The Underwriters' obligations
to contribute pursuant to this paragraph (d) are several in proportion to their
respective underwriting obligations, and not joint.  No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation.  For purposes of this paragraph (d), (i) each
person, if any, who controls an Underwriter within the meaning of Section 15 of
the Act or Section 20 of the Exchange Act shall have the same rights to
contribution as such Underwriter and (ii) each director of the Company, each
officer of the Company who has signed the Registration Statement, and each
person, if any, who controls the Company within the meaning of Section 15 of the
Act or Section 20 of the Exchange Act and the Selling Stockholder shall have the
same rights to contribution as the Company, subject in each case to this
paragraph (d).  Any party entitled to contribution will, promptly after receipt
of notice of commencement of any action, suit or proceeding against such party
in respect to which a claim for contribution may be made against another party
or parties under this paragraph (d), notify such party or parties from whom
contribution may be sought, but the omission so to notify such party or parties
shall not relieve the party or parties from whom contribution may be sought from
any other obligation (x) it or they may have hereunder or otherwise than under
this paragraph (d) or (y) to the extent that such party or parties were not
adversely affected by such omission.  The contribution agreement set forth above
shall be in addition to any liabilities which any indemnifying party may
otherwise have.

    9.   RIGHT TO INCREASE OFFERING.  At anytime during a period of 30 days
from the date of the Prospectus, the Underwriters, by no less than two business
days' prior notice to the Company may designate a closing (which may be
concurrent with, and part of, the closing on the Closing Date with respect to
the Firm Shares or may be a second closing held on a date subsequent to the
Closing Date, in either case such date shall be referred to herein as the
"Option Closing Date") at which the Underwriters may purchase all or less than
all of the Additional Shares in accordance with the provisions of this Section 9
at the purchase price per share to be paid for the Firm Shares.  In no event
shall the Option Closing Date be later than 10 business days after written
notice of election to purchase Additional Shares is given.

         The Company agrees to sell to the several Underwriters on the Option
Closing Date the number of Additional Shares specified in such notice and the
Underwriters agree severally and not jointly, to purchase such Additional Shares
on the Option Closing Date.  Such Additional Shares shall be purchased for the
account of each Underwriter in the same proportion as the number of Firm Shares
set forth opposite the name of such Underwriter in Column (3) of Schedule I
bears to the total number of Firm Shares (subject to adjustment by you to
eliminate fractions) and may be purchased by the Underwriters only for the
purpose of covering over-allotments made in connection with the sale of the Firm
Shares.

         No Additional Shares shall be sold or delivered unless the Firm Shares
previously have been, or simultaneously are, sold and delivered.  The right to
purchase the Additional


                                         -28-

<PAGE>


Shares or any portion thereof may be surrendered and terminated at any time upon
notice by you to the Company.

         Except to the extent modified by this Section 9, all provisions of
this Agreement relating to the transactions contemplated to occur on the Closing
Date for the sale of the Firm Shares shall apply, MUTATIS MUTANDIS, to the
Option Closing Date for the sale of the Additional Shares.

    10.  REPRESENTATIONS, ETC. TO SURVIVE DELIVERY.  The respective
representations, warranties, agreements, covenants, indemnities and statements
of, and on behalf of, the Company and its officers, the Selling Stockholder and
the Underwriters, respectively, set forth in or made pursuant to this Agreement
will remain in full force and effect, regardless of any investigation made by or
on behalf of the Underwriters, and will survive delivery of and payment for the
Shares.  Any successors to the Underwriters shall be entitled to the indemnity,
contribution and reimbursement agreements contained in this Agreement.

    11.  EFFECTIVE DATE AND TERMINATION.

         (a)  This Agreement shall become effective at 11:00 a.m., New York
time, on the first business day following the date hereof, or at such earlier
time after the Registration Statement becomes effective as the Representatives,
in their sole discretion, shall release the Shares for the sale to the public
unless prior to such time the Representatives shall have received written notice
from the Company that it elects that this Agreement shall not become effective,
or the Representatives shall have given written notice to the Company that the
Representatives on behalf of the Underwriters elect that this Agreement shall
not become effective; PROVIDED, HOWEVER, that the provisions of this Section 11
and of Section 6 and Section 8 hereof shall at all times be effective.  For
purposes of this Section 11(a), the Shares to be purchased hereunder shall be
deemed to have been so released upon the earlier of notification by the
Representatives to securities dealers releasing such Shares for offering or the
release by the Representatives for publication of the first newspaper
advertisement which is subsequently published relating to the Shares.

         (b)  This Agreement (except for the provisions of Sections 6 and 8
hereof) may be terminated by the Representatives by notice to the Company and
the Selling Stockholder in the event that the Company or the Selling Stockholder
have failed to comply in any respect with any of the provisions of this
Agreement required on their respective parts to be performed at or prior to the
Closing Date or the Option Closing Date, or if any of the representations or
warranties of the Company or the Selling Stockholder are not accurate in any
respect or if the covenants, agreements or conditions of, or applicable to the
Company or the Selling Stockholder herein contained have not been complied with
in any respect or satisfied within the time specified on the Closing Date or the
Option Closing Date, respectively, or if prior to the Closing Date or the Option
Closing Date:


                                         -29-

<PAGE>


              (i)  the Company shall have sustained a loss by strike, fire,
    flood, accident or other calamity of such a character as to interfere
    materially with the conduct of the business and operations of the Company
    regardless of whether or not such loss was insured;

              (ii)  trading in the Common Stock shall have been suspended by
    the Commission or the NNM or trading in securities generally on the New
    York Stock Exchange or the NNM shall have been suspended or a material
    limitation on such trading shall have been imposed or minimum or maximum
    prices shall have been established on either such exchange or market;

              (iii)  a banking moratorium shall have been declared by New York
    or United States authorities;

              (iv) there shall have been an outbreak or escalation of
    hostilities between the United States and any foreign power or an outbreak
    or escalation of any other insurrection or armed conflict involving the
    United States; or

              (v)  there shall have been a material adverse change in (A)
    general economic, political or financial conditions or (B) the present or
    prospective business or condition (financial or other) of the Company that,
    in each case, in the Representatives' judgment makes it impracticable or
    inadvisable to make or consummate the public offering, sale or delivery of
    the Company's Shares on the terms and in the manner contemplated in the
    Prospectus and the Registration Statement.

         (c)  Termination of this Agreement under this Section 11 or Section 12
after the Firm Shares have been purchased by the Underwriters hereunder shall be
applicable only to the Additional Shares.  Termination of this Agreement shall
be without liability of any party to any other party other than as provided in
Sections 6 and 8 hereof.

    12.  SUBSTITUTION OF UNDERWRITERS.  If one or more of the Underwriters
shall fail or refuse (otherwise than for a reason sufficient to justify the
termination of this Agreement under the provisions of Section 7 or 11 hereof) to
purchase and pay for (a) in the case of the Closing Date, the number of Firm
Shares agreed to be purchased by such Underwriter or Underwriters upon tender to
you of such Firm Shares in accordance with the terms hereof or (b) in the case
of the Option Closing Date, the number of Additional Shares agreed to be
purchased by such Underwriter or Underwriters upon tender to you of such
Additional Shares in accordance with the terms hereof, and the number of such
Shares shall not exceed 10% of the Firm Shares or Additional Shares required to
be purchased on the Closing Date or the Option Closing Date, as the case may be,
then, each of the non-defaulting Underwriters shall purchase and pay for (in
addition to the number of such Shares which it has severally agreed to purchase
hereunder) that proportion of the number of Shares which the defaulting
Underwriter or Underwriters shall have so failed or refused to purchase on such
Closing Date or Option Closing Date, as the case may be, which the number of
Shares agreed to be purchased by such non-defaulting Underwriter


                                         -30-

<PAGE>


bears to the aggregate number of Shares so agreed to be purchased by all such
non-defaulting Underwriters on such Closing Date or Option Closing Date, as the
case may be.  In such case, you shall have the right to postpone the Closing
Date or the Option Closing Date, as the case may be, to a date not exceeding
seven full business days after the date originally fixed as such Closing Date or
the Option Closing Date, as the case may be, pursuant to the terms hereof in
order that any necessary changes in the Registration Statement, the Prospectus
or any other documents or arrangements may be made.

    If one or more of the Underwriters shall fail or refuse (otherwise than for
a reason sufficient to justify the termination of this Agreement under the
provisions of Section 7 or 11 hereof) to purchase and pay for (a) in the case of
the Closing Date, the number of Firm Shares agreed to be purchased by such
Underwriter or Underwriters upon tender to you of such Firm Shares in accordance
with the terms hereof or (b) in the case of the Option Closing Date, the number
of Additional Shares agreed to be purchased by such Underwriter or Underwriters
upon tender to you of such Additional Shares in accordance with the terms
hereof, and the number of such Shares shall exceed 10% of the Firm Shares or
Additional Shares required to be purchased by all the Underwriters on the
Closing Date or the Option Closing Date, as the case may be, then (unless within
48 hours after such default arrangements to your satisfaction shall have been
made for the purchase of the defaulted Shares by an Underwriter or Underwriters)
and subject to the provisions of Section 11(b) hereof, this Agreement will
terminate without liability on the part of any non-defaulting Underwriter or on
the part of the Company or the Selling Stockholder except as otherwise provided
in Sections 6 and 8 hereof.  As used in this Agreement, the term "Underwriter"
includes any person substituted for an Underwriter under this paragraph.
Nothing in this Section 12, and no action taken hereunder, shall relieve any
defaulting Underwriter from liability in respect of any default of such
Underwriter under this Agreement.

    13.  NOTICES.  All communications hereunder shall be in writing and if sent
to the Representatives shall be mailed or delivered or sent by facsimile
transmission and confirmed by letter to c/o Furman Selz LLC at 230 Park Avenue,
New York, New York 10169, Attention: Syndicate Department (facsimile number:
(212) ___-____) or, if sent to the Company, shall be mailed or delivered or sent
by facsimile transmission and confirmed by letter to the Company at 209 Perry
Parkway, Gaithersburg, Maryland 20877, Attention: ___________________ (facsimile
number: (301) 258-6234), or, if sent to the Selling Stockholder, shall be mailed
or delivered or telegraphed and confirmed by letter or telecopied and confirmed
by letter to CEO Venture Fund II at 1950 Old Gallows Road, Suite 440, Vienna,
Virginia 22182-3933, Attention: Gary P. Golding (facsimile number: (703) 506-
8817).

    14.  SUCCESSORS.  This Agreement shall inure to the benefit of and be
binding upon the Company, the Selling Stockholder, and each Underwriter and the
Company's, the Selling Stockholder's and each Underwriter's respective
successors and legal representatives, and nothing expressed or mentioned in this
Agreement is intended or shall be construed to give any other person any legal
or equitable right, remedy or claim under or in respect of this Agreement, or
any provisions herein contained, this Agreement and all conditions and
provisions hereof


                                         -31-

<PAGE>


being intended to be and being for the sole and exclusive benefit of such
persons and for the benefit of no other person, except that the representations,
warranties, indemnities and contribution agreements of the Company and the
Selling Stockholder contained in this Agreement shall also be for the benefit of
any person or persons, if any, who control any Underwriter within the meaning of
Section 15 of the Act or Section 20 of the Exchange Act, and except that the
Underwriters' indemnity and contribution agreements shall also be for the
benefit of the directors of the Company, the officers of the Company who have
signed the Registration Statement, any person or persons, if any, who control
the Company within the meaning of Section 15 of the Act or Section 20 of the
Exchange Act and the Selling Stockholder.  No purchaser of Shares from the
Underwriters will be deemed a successor because of such purchase.

    15.  APPLICABLE LAW; JURISDICTION.  This Agreement shall be governed by and
construed in accordance with the laws of the State of New York, without giving
effect to the choice of law or conflict of law principles thereof.  Each party
hereto consents to the jurisdiction of each court in which any action is
commenced seeking indemnity or contribution pursuant to Section 8 above and
agrees to accept, either directly or through an agent, service of process of
each such court.

    16.  COUNTERPARTS.  This Agreement may be executed in any number of
counterparts, each of which shall be deemed to be an original, and all of which
together shall be deemed to be one and the same instrument.


                                         -32-

<PAGE>


    If the foregoing correctly sets forth our understanding, please indicate
the Underwriters' acceptance thereof in the space provided below for that
purpose, whereupon this letter shall constitute a binding agreement between us.

                                       Very truly yours,

                                       ACE*COMM CORPORATION


                                       By:___________________________
                                          Name:
                                          Title:


                                       CEO VENTURE FUND II


                                       By:___________________________
                                          Name:
                                          Title:


Accepted as of the date first
above written:

FURMAN SELZ LLC
OPPENHEIMER & CO., INC.
RODMAN & RENSHAW, INC.

By: FURMAN SELZ LLC
Acting on its own behalf and as
one of the Representatives of
the several Underwriters
referred to in the foregoing
Agreement


By:______________________________
   Name:
   Title:



                                         -33-

<PAGE>



                                                                    SCHEDULE I


                                     UNDERWRITERS


                  Underwriting Agreement dated ______________, 1996


                             (1)                 (2)                 (3)

                        Number of Firm      Number of Firm         Aggregate
                        Shares to be        Shares to be           Number of
                        Purchased from      Purchased from         Firm Shares
                        the Company          the Selling            to be
                        --------------       Stockholder           Purchased
                                           ----------------        ---------

Name Of Underwriter
- -------------------


Furman Selz LLC......... ____________       ______________        __________

Oppenheimer & Co., Inc.. ____________       ______________        __________

Rodman & Renshaw, Inc... ____________       ______________        __________



  Total.................    2,250,000           268,203             2,518,203
                          ------------       --------------        ----------
                          ------------       --------------        ----------

<PAGE>

                                                                  EXHIBIT 10.1


                               AMERICAN COMPUTER
                          AND ELECTRONICS CORPORATION


                                      AND


                              AT&T-WORLD SERVICES




                              SUPPLIER AGREEMENT


<PAGE>


                                   CONTENTS


 1. "INTERPRETATION"............................................
       Headings.................................................
       Schedules................................................
       Applicable Law...........................................
 2. "TERM"......................................................
 3. "SCOPE".....................................................
 4. "FEES"......................................................
 5. "RESPONSIBILITIES"..........................................
 6. "TECHNICAL COMPATIBILITY"...................................
 7. "WARRANTY SUPPORT"..........................................
 8. "RIGHTS IN INFORMATION".....................................
 9. "CONFIDENTIAL INFORMATION"..................................
10. "ADVERTISING"...............................................
11. "TRADEMARKS"................................................
12. "EXPORT CONTROL"............................................
13. "LIMITATION OF LIABILITY"...................................
14. "FORCE MAJEURE".............................................
15. "DEFAULT/TERMINATION".......................................
       "Default"................................................
       "Termination"............................................
16. "ARBITRATION"...............................................
17. "ASSIGNMENT"................................................
18. "WAIVER"....................................................
19. "SEVERABILITY"..............................................
20. "NOTICE"....................................................
21. "ENTIRE AGREEMENT AND VARIATION"............................
22. "SURVIVAL"..................................................
23. "SIGNATURES"................................................


<PAGE>

AGREEMENT made this SIXTEENTH day of DECEMBER 1992

BETWEEN

AT&T WORLD SERVICES, INC. (hereinafter called ("AT&T-WORLD SERVICES") a 
corporation organized under the laws of the State of Delaware, U.S.A., having 
an office at 111 Madison Avenue, 3rd Floor, Morristown, NJ 07960, U.S.A.)

AND

AMERICAN COMPUTER and ELECTRONICS CORPORATION, a corporation organized under 
the laws of the State of Maryland, U.S.A., having its principal office at 209 
Perry Parkway, Gaithersburg, Maryland 20877 (hereinafter called.  "AMERICAN 
COMPUTER").

WHEREAS

AT&T WORLD SERVICES and AMERICAN COMPUTER have entered into a Marketing 
Agreement ("Marketing Agreement") effective June 18, 1990 and this Marketing 
Agreement specifies the conditions for the international marketing and sales 
of AMERICAN COMPUTER'S products and services by AT&T WORLD SERVICES.

NOW, THEREFORE,

The parties wish to establish the terms, conditions, and obligations of the 
parties under which the delivery, support, and warranty of products and 
services provided to customers of AT&T WORLD SERVICES under the Marketing 
Agreement may from time to time occur.

AT&T-WORLD SERVICES

AND

AMERICAN COMPUTER

AGREE AS FOLLOWS:

1.  "INTERPRETATION"

In this Agreement:

"AMERICAN COMPUTER" means the AMERICAN COMPUTER and ELECTRONICS CORPORATION, 
209 Perry Parkway, Gaithersburg, Maryland 20877, U.S.A.


<PAGE>


"Application Software" means software in object code and source code format 
and its related documentation to be provided to Customers under Contract.

"AT&T" means AT&T World Services Inc. and American Telephone and Telegraph 
Company, and its affiliates and subsidiaries.

"Contract" means an agreement entered into between AT&T World Services Inc. 
and its international Customer for delivery, installation and support of 
products and services covered by the Marketing Agreement.

"Customer" means an organization/entity that has Contracted with AT&T WORLD 
SERVICES for acquisition of AMERICAN COMPUTER'S products and/or services 
under the terms of the Marketing Agreement.

"Day" or "days" means business days unless specifically stated otherwise.

"DCMS-TM-" means the Distributed Call Measurement System of AMERICAN COMPUTER.

"Delivery" means the delivery of Products/Services to Customer's designated 
sites.  

"Delivery Dates" means those dates for Delivery as set out in Customer 
Contracts.

"Products/Services" means any item of hardware or related service supplied by 
AMERICAN COMPUTER under this Agreement including equipment, equipment 
features, model conversions, machine elements and accessories.

"Licensed Programs" means those computer programs required for the operation 
of Products/Services and offered in object code format only.

"Month" or "months" means calendar months unless specifically stated 
otherwise.

"Opportunity" means the given end user requirement of a particular customer 
for the Products/Services offered under this Agreement.

"Software" means computer programs and associated documentation including, 
but not limited to, Application Software and Licensed Programs as supplied 
under this Agreement.

"UPS-32-TM-" means the Universal Polling System of AMERICAN COMPUTER.

HEADINGS

The headings and captions in this Agreement are for convenience only and are 
not intended to have any Contractual effect


                                       2


<PAGE>


SCHEDULES

All documents and papers attached to this Agreement as Schedules are hereby 
incorporated into and made a part of this agreement If there is any conflict 
between any provision contained in the Schedules and the main body, the 
Schedules will prevail in the order of priority as listed below.  The 
Schedules to this Agreement are:

    SCHEDULE 1:  CUSTOMER MANAGEMENT PLAN

APPLICABLE LAW

This agreement shall be governed by and construed in accordance with the laws 
of New Jersey.

2.  "TERM"

This Agreement shall run concurrently with the AMERICAN COMPUTER/AT&T WORLD 
SERVICES Marketing Agreement, commencing on the date of signing of this 
Agreement with automatic renewal for successive one (1) year periods unless 
either Party gives written notice of the intention not to renew at least 
thirty (30) days prior to the expiration of the initial term or any renewal 
terms.  The terms and conditions of this Agreement will take effect with the 
first new Contract or Agreement for equipment or software following the 
signing of this contract.  The contract will terminate coincident with the 
aforementioned marketing agreement.

3.  "SCOPE"

The parties are establishing this supplier agreement for their mutual benefit 
and agree that they will cooperate in the delivery of products and services 
to Customers of AT&T WORLD SERVICES.

AMERICAN COMPUTER agrees to provide to AT&T WORLD SERVICES in accordance with 
the Contract, the delivery, installation and commissioning and warranty of 
the Products/Services through the provision of hardware, software, technical 
and engineering services, warranty support and documentation.

4.  "FEES"

AMERICAN COMPUTER and AT&T WORLD SERVICES may establish fees for the 
provision of services by AMERICAN COMPUTER in delivery and support of 
Contracts.  Such fees will be set during the Contract negotiation phase and 
will be agreed to by the parties in writing.  Both parties recognize that 
changes to the scope of a contract, technical and cost, are likely to occur 
during the phases of the project.  These changes will be discussed and agreed 
to in writing between both parties' Project Managers.  These 


                                       3


<PAGE>


changes will also likely have a schedule impact that will be discussed and 
agreed to, in writing, among the Customer, AT&T and AMERICAN COMPUTER.

5.  "RESPONSIBILITIES"

Each party shall assign its technically qualified Project Manager responsible 
for providing leadership and direction to the delivery of products and 
services under this Agreement to AT&T WORLD SERVICES customers.  Each such 
Project Manager shall be provided with a copy of this Agreement and shall be 
responsible for the day to day implementation of the relationship herein 
established.

The Project Managers will be responsible for establishing project schedules 
and cost controls to assure that Contract implementation occurs within cost 
and time expectations as set forth in AT&T WORLD SERVICES project plan for 
each Contract.

Each party will cooperate to assure a best effort attempt to identify 
customer requirements as early as possible in the customer Contract 
negotiation process.  In those instances where a customer provides erroneous 
or inaccurate data that affects the ultimate product delivery capability 
regarding price or delivery time, AT&T WORLD SERVICES will be responsible, 
with the cooperation of AMERICAN COMPUTER, to re-negotiate an upscope to 
correct the customer's misinformation.

If changes are required due to mutual misunderstanding or misinterpretation 
of legitimate customer requirements or specifications, such changes will be 
accommodated at the expense of the party responsible for the misunderstanding 
of the activities in question.

If there is disagreement between the Project Managers regarding this 
Agreement the matter shall be referred by the Project Managers to the 
Director, TCS Division for AMERICAN COMPUTER and to the BASE PRODUCT MANAGER 
for AT&T WORLD SERVICES who shall attempt to mediate the difference.

The services to be provided by AMERICAN COMPUTER under this Agreement shall 
proceed with promptness and diligence and shall be executed with the highest 
professional standards in the field, to AT&T WORLD SERVICES satisfaction.  
The acceptance of the work product by AT&T WORLD SERVICES' client shall not 
prevent AT&T WORLD SERVICES from subsequently objecting to its quality and 
stating claims accordingly.

AMERICAN COMPUTER will be responsible to assure that all required information 
and specifications pertaining to a customer's requirement for delivery of 
covered products and services are gathered and verified.  AMERICAN COMPUTER 
will provide written recommendations based upon its survey of the customer 
requirements for equipment sizing and will take special care to assure that 
switch call record volume estimates accurately reflect the customers 
operating environment.  AMERICAN COMPUTER will obtain written estimates of 
the switch call record volumes from the customer and will be 


                                       4


<PAGE>


responsible that all equipment and software supplied by AMERICAN COMPUTER 
will accommodate the customer's written call record volume requirements.

AMERICAN COMPUTER will be responsible to determine the network/line 
conditions required for implementation of each Contract and to advise the 
customer of these requirements.  AMERICAN COMPUTER will establish testing 
criteria to assure the suitability of the customer's transmission facilities 
and will at the time of installation of products provided under Contracts 
perform its standard tests and advise the customer and AT&T WORLD SERVICES in 
writing of its findings and recommended corrective actions, if any are 
required.

AT&T WORLD SERVICES will promptly refer and review all sales initiatives and 
provide in writing all orders, special requests, project impacting decisions.

AT&T WORLD SERVICES will provide access to AMERICAN COMPUTER of customer 
trouble data gathered by its CHANGE/TROUBLE TRACKING system.

6.  "TECHNICAL COMPATIBILITY"

AMERICAN COMPUTER will cooperate with AT&T WORLD SERVICES to assure that its 
products are and remain technically compatible with AT&T's network and 
computer hardware/software products.

AMERICAN COMPUTER will cooperate with AT&T WORLD SERVICES to assure that AT&T 
BASE product standards with regard to customer presentation screens and 
documentation are incorporated in products provided hereunder.

AMERICAN COMPUTER will, at its own expense, perform bench marking activities 
to support technical requirements of AT&T WORLD SERVICES customers.

If a customer of AT&T WORLD SERVICES specifies implementation of products on 
switches and or computers not previously known to AMERICAN COMPUTER, AMERICAN 
COMPUTER will advise AT&T WORLD SERVICES during the customer negotiation 
phase of its cost, if any, to modify its products to accommodate the customer 
requirements.

7.  "WARRANTY SUPPORT"

AMERICAN COMPUTER grants to AT&T WORLD SERVICES the right to incorporate into 
those product offerings that include the products/services of AMERICAN 
COMPUTER and to thereby pass its standard, published equipment warranty to 
customers under this Agreement.  If an extension of the warranty period is 
required, not to exceed three (3) additional months of warranty, due to 
customer acceptance delay in the acceptance of the integrated AT&T WORLD 


                                       5


<PAGE>


SERVICES/AMERICAN COMPUTER product set, such extension will be automatically 
granted at no additional expense to AT&T WORLD SERVICES or its customer.

8.  "RIGHTS IN INFORMATION"

AMERICAN COMPUTER and AT&T WORLD SERVICES agree that they will not use any 
information of a proprietary or confidential nature belonging to any other 
company or individual in the performance of this Agreement

Information including, but not limited to data, business information, 
technical information, specifications, drawings, records, and computer 
programs and documentation (hereafter "Information"), originated or prepared 
by or for AT&T WORLD SERVICES or its customer in contemplation of, or in the 
course of, or as a result of, work done hereunder. which Information is 
incorporated into or becomes a part of a Covered System shall be promptly 
furnished to AT&T WORLD SERVICES.

All such Information shall remain the exclusive property of AMERICAN COMPUTER 
however AT&T - WORLD SERVICES shall acquire a perpetual, fee free right to 
use such information in support of the Contract.  No such information will 
ever be provided to competitors of AMERICAN COMPUTER even in support of a 
Contract without the express written permission of AMERICAN COMPUTER,

9.  "CONFIDENTIAL INFORMATION"

In this Agreement, "Confidential Information" means information regarding a 
party, its business, personnel, technical or statistical data, or financial 
information that:

      is not generally known to the public or to other persons who are not 
      bound by the obligations to maintain its confidentiality-, and/or, 
      derives economic or strategic value, actual or potential. from not 
      being generally known; or has a character such that the party has a 
      legitimate interest in preserving its confidential nature.

As a consequence of entering this Agreement or performing the obligations 
herein, the parties may have disclosed to them, or they may otherwise have 
access to, or learn of, Confidential Information of the other.  Each party 
agrees to hold in strict confidence all Confidential Information of the other 
that it learns of, or is provided with, and to use such Confidential 
Information only for the purpose of this Agreement.  Neither party will use, 
copy, or disclose to third parties any Confidential Information of the other 
party except as contemplated herein.  The parties shall ensure that all third 
parties to whom it has to disclose Confidential Information to perform its 
obligations under this Agreement acknowledge its confidential nature and 
agree to be bound by the provisions of this Clause in a written undertaking.


                                       6


<PAGE>


10. "ADVERTISING"

Each party agrees that it shall not cause any publicity relating to the 
acceptance of any proposal or supply of the Products/Services under this 
Agreement to be published in any newspaper, journal or any other medium 
without the other party's prior written approval, such approval shall not be 
unreasonably with held.

11. "TRADEMARKS"

Either party will not, without the other party's express written permission 
except as provided for in this Agreement in the preparation and delivery of 
Customer proposals, responses and jointly developed marketing material, use 
in advertising, publicity, or otherwise, any trade name, trademark, trade 
device, service mark, symbol, code or specification or any abbreviation, 
Contraction, or simulation thereof of the other, nor shall the other party 
claim any ownership therein.

12. "EXPORT CONTROL"

Each party assures the other that it does not intend to and will not 
knowingly, without the prior written consent of the other and the Office of 
Export Administration of the United States Department of Commerce, PO Box 
273, Washington, DC 20044, U.S.A., transmit directly or indirectly.

      any technical information or SOFTWARE furnished under this Agreement; 
      or, any immediate product (including processes, materials and/or 
      services), if any, produced directly by the use of the technical 
      information or SOFTWARE, or is a plant capable of producing a commodity 
      or is a major component of such a plant furnished under this Agreement;

to Afghanistan, The People's Republic of China, or any Group Q, S, W, Y, or Z 
country (or any national or resident thereof or others that may be designated 
in Supplement No. 1 to Section 770 of the Export Administration Regulations 
issued by the U.S. Department of Commerce.

13. "LIMITATION OF LIABILITY"

Nothing in this Agreement shall be considered to create the relationship of 
employer and employee between the parties hereto.  AMERICAN COMPUTER and AT&T 
WORLD SERVICES shall at all times be deemed to be independent Contractors.  
Each shall be solely responsible for the payment of all applicable United 
States and foreign taxes for itself and its employees.

The liability of AT&T and AMERICAN COMPUTER for any claim arising from any 
cause whatsoever (excepting personal injury and/or death and claims of 
infringement), regardless of the cause of action, whether in Contract, tort 
or otherwise, shall in no event 


                                       7


<PAGE>


exceed the lesser of the direct damages actually proven or $10,000.  In no 
event shall either AT&T or AMERICAN COMPUTER be liable to the other for 
incidental, special, consequential or any other direct loss or damage of any 
kind whatsoever, including lost profits or revenues arising out of this 
Agreement.

Each party shall defend, indemnify and hold harmless the other party from any 
and all claims, suits, actions, demands, costs, settlements, losses, damages, 
expenses and all other liabilities, including attorneys' fees, arising out of 
or resulting from the intentional or negligent acts or omissions on the part 
of any party, its employees, officers, agents or independent Contractors in 
the performance of or failure to perform the activities contemplated by this 
Agreement.

For purposes of this section, AT&T shall mean AT&T World Services Inc., 
American Telephone and Telegraph Company, its affiliates and subsidiaries, 
its officers, employees and agents.

14. "FORCE MAJEURE"

Neither party shall be liable for any delays and/or non-performance of 
Contractual obligations hereunder caused by any event beyond the party's 
reasonable control (a "Force Majeure'), including but not limited to wars, 
riots, the act or failure to act or order of any civil or military authority, 
fires, flood and other acts of God, labor disputes, accidents. and other such 
events, and all applicable deadlines and milestones will be extended by a 
period of time equal to the duration of each such event.  Regardless of the 
foregoing, a party that is delayed or prevented from performing its 
obligations as a consequence of a Force Majeure will exert diligent efforts 
to counter the Force Majeure or otherwise mitigate the effects of the Force 
Majeure.

15. "DEFAULT/TERMINATION"

"DEFAULT"

Each of the following events shall constitute a default under this Agreement 
on the part of the party who commits or is responsible for the same:

      any failure by a party to perform or observe any of its material 
      obligations under this Agreement and the defaulting party failing to 
      correct the default in all material respects within ninety (90) days 
      after receiving a written notice from the non-defaulting party 
      requesting that the default be corrected.

      if a party is wound-up, or liquidated, or becomes insolvent, or if a 
      custodian, receiver, or a receiver-manager is appointed for its 
      business or any of its property, or if the party makes an assignment, 
      proposal or arrangement for the benefit of creditors, or if it files or 
      has filed against it a petition in bankruptcy that it has not dismissed 
      within ninety (90) days, or if the party discontinues its business.


                                       8


<PAGE>


"TERMINATION"

If either party commits a default under this Agreement, then, the 
non-defaulting party shall be entitled to terminate this Agreement by giving 
the defaulting party written notice of termination, which shall be effective 
upon receipt by the defaulting party.

If this Agreement is terminated by AMERICAN COMPUTER under as a result of 
AT&T WORLD SERVICES' default, AT&T WORLD SERVICES' right to market the 
Products/Services hereunder shall be terminated forthwith.

Licenses granted to Customers and Warranty obligations of all Customer Supply 
Agreements outstanding prior to the termination of this Agreement shall not 
be diminished or abridged by the termination of this Agreement and each party 
shall endeavor to provide all warranty maintenance work for licenses granted 
if such warranty maintenance had been granted to the Customer.

16. "ARBITRATION"

All differences between the parties arising out of, or relating to the 
interpretation, application, administration, alleged violation, termination 
or invalidity of the Agreement shall be finally settled by arbitration in 
accordance with the Arbitration Act 1908 or any statutory modification or 
re-enactment thereof for the time being in force.

Any such dispute, doubt or question shall be referred to arbitration in New 
Jersey of a single arbitrator in case the parties can agree upon one and 
failing such an agreement to two (2) arbitrators, one to be appointed by 
AMERICAN COMPUTER and one to be appointed by AT&T WORLD SERVICES, or in a 
case of disagreement to an umpire to be appointed by the arbitrators before 
entering upon the reference.  Any such arbitration shall be conducted in New 
Jersey.

17. "ASSIGNMENT"

Neither this Agreement nor the rights and obligations of either party under 
this Agreement may be assigned or transferred without the prior written 
consent of the other party, such consent shall not be unreasonably withheld.

18. "WAIVER"

No term or provision of this Agreement shall be deemed to be waived and no 
breach excused, unless such waiver or consent shall be in writing and signed 
by the party claimed to have waived or consented.  Any consent by any party 
to, or waiver of, a breach by the other, whether express or implied, shall 
not constitute a consent to, waiver of, or excuse for any other, different or 
subsequent breach.


                                       9


<PAGE>


19. "SEVERABILITY"

If any part or parts e. this Agreement shall be -held illegal or null and 
void by any court or administrative body of competent jurisdiction, such 
determination shall not affect the remaining parts of this Agreement that 
shall remain in full force and effect as if part or parts held to be illegal 
or void had not been included in the Agreement provided that the principal 
obligations of the parties are maintained.

20. "NOTICE"

Any notice, request, or information shall be deemed to be sufficiently given 
when sent by registered mail, courier express or by facsimile (confirmed by 
registered mail), to the other party at the following addresses:

      AT&T WORLD SERVICES, INC.
      Room 3S2
      111 Madison Avenue
      Morristown, NJ  07960
      U.S.A.
      Attention:  Mr. John Jepsen, Managing Director


      AMERICAN COMPUTER and ELECTRONICS CORPORATION
      209 PERRY PARKWAY
      GAITHERSBURG, MD  20877
      U.SA
      Attention:  Dr. Thomas V. Russotto, Vice President

Notices by post shall be sufficiently given if sent by registered mail to 
AMERICAN COMPUTER'S or AT&T-WORLD SERVICES' address as the case may be.  They 
shall be deemed received by the addressee, ten days following the date of 
mailing.

Notice by facsimile shall be deemed received by the addressee (so long as the 
correct answer back or acknowledgment is received by the sender) on the 
business day following the day on which such facsimile is sent

21. "ENTIRE AGREEMENT AND VARIATION"

This Agreement constitutes the complete and exclusive statement of the 
Agreement between the parties, which supersedes all proposals or prior 
agreements, oral or written, and all communications between the parties 
relating to the subject of this Agreement.


                                      10


<PAGE>


No amendment to this Agreement shall be effective unless in writing in a 
format similar to the format of this Agreement and signed by duly authorized 
representatives of both parties.

22. "SURVIVAL"

The obligations of the parties under this Agreement which by their nature 
would continue beyond the expiration, termination or cancellation of this 
Agreement, including without limitation, the obligations in the Articles 
entitled TRADEMARKS, CONFIDENTIAL INFORMATION, SOFTWARE LICENSES, WARRANTY 
SUPPORT, EXPORT CONTROL and ESCROW shall survive the expiration or 
termination of this Agreement.

23. "SIGNATURES"

IN WITNESS WHEREOF   these presents have been executed the day and the year 
first herein before written:

SIGNED for and on behalf of

AMERICAN COMPUTER   by

/s/ Thomas V. Russotto
- ----------------------------------


in the presence of:

/s/ Brenda L. Roundsy
- ----------------------------------


SIGNED for and on behalf of

AT&T WORLD SERVICES INCORPORATED by

/s/ Donald Dippel
- ----------------------------------


in the presence of:

/s/ Alice Allaners
- ----------------------------------


                                      11


<PAGE>



                                                                    EXHIBIT 10.2


                                 MARKETING AGREEMENT
                                           



AGREEMENT, made this 6th day of December, 1990.


BETWEEN

AT&T WORLD SERVICES, INC. (hereinafter called "AT&T-WORLD SERVICES") a
corporation organized under the laws of the State of Delaware, U.S.A., having
its principal office at 412 Mt. Kemble Plaza, Morristown, NJ 07960, U.S.A.

AND,

AMERICAN COMPUTER and ELECTRONICS CORPORATION, a corporation organized under the
laws of the State of Maryland, U.S.A., having its principal office at 209 Perry
Parkway, Gaithersburg, Maryland 20877 (hereinafter called "AMERICAN COMPUTER").


WHEREAS


 1. AT&T-WORLD SERVICES and AMERICAN COMPUTER having entered into a MEMORANDUM
    OF UNDERSTANDING dated the 18th day of June, 1990; and,
    
 2. Paragraph 18 of that MEMORANDUM OF UNDERSTANDING specifying that the
    parties intend to enter into a worldwide (excluding the domestic US market)
    marketing agreement for certain of AMERICAN COMPUTER'S products and
    services to be marketed and distributed by AT&T-WORLD SERVICES in the
    international (non-US domestic) market;


NOW, THEREFORE, AT&T-WORLD SERVICES and AMERICAN COMPUTER agree as follows:


1.  INTERPRETATION

 1. In this Agreement:

    "Agent" means an in-country business entity required by the business
    customs, culture or law of a particular customer country and acceptable to
    both parties.
    
    "AMERICAN COMPUTER" means the American Computer and Electronics
    Corporation, 209 Perry Parkway, Gaithersburg, Maryland 20877, U.S.A.
    
    "Custom Software" means software in object code and source code format and
    its related documentation to be provided to Customers under this Agreement.
    
    "AT&T" means AT&T World Services Inc. and American Telephone and Telegraph

    

                                        - 1 -

<PAGE>


    Company, and its affiliates and subsidiaries.

    "Customer" means an organization/entity acceptable to both AT&T-WORLD
    SERVICES and AMERICAN COMPUTER for their own business purposes to whom the
    Products/Services will be proposed and provided.
    
    "day" or "days" means business days unless specifically stated otherwise.
    
    "DCMS-TM-" means the Distributed Call Measurement System of AMERICAN
    COMPUTER.
    
    "Delivery" means the delivery of Products/Services to Customer's designated
    sites.
    
    "Delivery Dates" means those dates for Delivery as set out in Customer
    proposals.
    
    "Products/Services" means any item of hardware or related service supplied
    by AMERICAN COMPUTER under this Agreement including equipment, equipment
    features, model conversions, machine elements and accessories.
    
    "Licensed Programs" means those computer programs required for the
    operation of Products/Services and offered in object code format only.
    
    "month" or "months" means calendar months unless specifically stated
    otherwise.
    
    "Opportunity" means the given end user requirement of a particular customer
    for the Products/Services offered under this Agreement.
    
    "Software" means computer programs and associated documentation including,
    but not limited to, Custom Software and Licensed Program as supplied under
    this Agreement.
    
    "UPS-32-TM-" means the Universal Polling System of AMERICAN COMPUTER.

 2. Headings

    The headings and captions in this Agreement are for convenience only and
    are not intended to have any contractual effect.

 3. Schedules

    All documents and papers attached to this Agreement as Schedules are hereby
    incorporated into and made a part of this Agreement.  In the event of any
    conflict between any provision contained in the Schedules and the main
    body, the Schedules will prevail in the order of priority as listed below. 
    The Schedules to this Agreement are:

    Schedule 1: PRODUCTS/SERVICES
    Schedule 2: PRODUCT/SERVICE PRICES
    Schedule 3: FORMAT OF CUSTOM SOFTWARE AGREEMENT
    Schedule 4: ESCROW AGREEMENT

 4. Applicable Law
 
    This agreement shall be governed by and construed in accordance with the
    laws of New Jersey.


                                        - 2 -

<PAGE>
 
2.  TERM


The term of this Agreement shall be for a period of five (5) years commencing on
June 18, 1990 with automatic renewal for successive one (1) year periods unless
either Party gives written notice of the intention not to renew at least thirty
(30) days prior to the expiration of the initial term or any renewal terms.


3.  SCOPE

 1. The parties are establishing this marketing arrangement for their mutual
    benefit and agree that AT&T-WORLD SERVICES has the exclusive right as set
    forth in Section 4-EXCLUSIVE RIGHT OF FIRST REFUSAL, to market and
    distribute the Products/Services of AMERICAN COMPUTER set forth in
    Schedule 1 outside the United States, its territories and possessions.

 2. The parties agree to identify and pursue marketing opportunities in the
    international arena.  Based upon mutual agreement, AT&T-WORLD SERVICES will
    propose the Products/Services of AMERICAN COMPUTER and AMERICAN COMPUTER
    agrees to provide these Products/Services.  The parties agree to execute
    any documents necessary in order to prepare and submit such proposals.
    
    AMERICAN COMPUTER will diligently assist AT&T-WORLD SERVICES in the
    analysis, development and review of Customer proposals, tender responses,
    requests for proposal, etc.  Such assistance shall be provided at no charge
    to AT&T-WORLD SERVICES during the first five (5) days, or as otherwise
    agreed, for each identified opportunity and thereafter at a fee to be
    developed between the parties on a case-by-case basis.  In the event that a
    sale of PRODUCTS/SERVICES results from such assistance provided, AMERICAN
    COMPUTER will reimburse AT&T-WORLD SERVICES for such fees received by
    AMERICAN COMPUTER from its share of the proceeds resulting from that
    particular opportunity.
    
    AT&T-WORLD SERVICES will review final proposals and Customer supply
    agreements with AMERICAN COMPUTER prior to submission to Customer and will
    receive written concurrence from AMERICAN COMPUTER of its acknowledgment to
    the obligations imposed upon AMERICAN COMPUTER by the proposals and/or
    Customer supply agreement.
    
 3. In the event that a Customer accepts a proposal provided under this
    Agreement, AT&T WORLD SERVICES agrees to contract with AMERICAN COMPUTER
    for the Products/Services, and AMERICAN COMPUTER agrees to provide the
    Products/Services in accordance with the Terms and Conditions of this
    Agreement and those which were specified in the proposal submitted to the
    customer.  AMERICAN COMPUTER further agrees to perform with AT&T-WORLD
    SERVICES in accordance with the proposal, the delivery, installation and
    commissioning of the Products/Services through the provision of hardware,
    software, technical and engineering services, warranty support and
    documentation.
    
 4. The parties agree that one tenth percent (0.1%) of the total project price,
    contributed equally from the proceeds of each party, from each sale that
    may result from this Agreement will be set aside in an account to be
    jointly administered for the development of international marketing
    materials (i.e., brochures, trade show presentations, seminars, on-site 
    presentations and the like) for the Products/Services under this agreement. 
    The initial level of funding in


                                        - 3 -

<PAGE>

    this account will not exceed one hundred thousand dollars ($100,000.00) and
    the parties may from time to time change the dollar limitation for this
    account.

 5. Nothing in this Agreement shall be taken as an obligation by AT&T-WORLD
    SERVICES to purchase any or a particular quantity of Products/Services
    notwithstanding any estimate that may be given at any time and AT&T-WORLD
    SERVICES shall have no liability to AMERICAN COMPUTER whether in contract,
    tort or otherwise with respect to any such estimate.


4.  EXCLUSIVE RIGHT OF FIRST REFUSAL

AMERICAN COMPUTER shall promptly advise AT&T-WORLD SERVICES in writing of all
inquiries, marketing contacts, requests for information, requests for proposal
and the like related to international opportunities which AMERICAN COMPUTER may
from time to time receive from all sources, including parties with whom AMERICAN
COMPUTER may be contractually associated, (except for AMERICAN COMPUTER's
contractual relationships with respect to cellular telephone technology) during
the life of this Agreement.

AMERICAN COMPUTER will refrain from providing pricing information, other than
the published list price, or from entering into dialogue with a potential
customer or other parties pending the acceptance or rejection of the opportunity
by AT&T-WORLD SERVICES under the following conditions:

 a. AT&T-WORLD SERVICES upon receipt of such notice from AMERICAN COMPUTER
    shall, within fifteen (15) business days, advise AMERICAN COMPUTER in
    writing of its interest in responding to such request and decide with
    AMERICAN COMPUTER the Products/Services and obligations of each party to
    the response.
    
 b. In the event AT&T-WORLD SERVICES fails to respond to AMERICAN COMPUTER
    within fifteen (15) business days, advises AMERICAN COMPUTER of its intent
    not to participate with AMERICAN COMPUTER under this Agreement, or the
    parties are unable to agree on the obligations of each party to the
    response, each party may then proceed without further commitment or
    obligation to the other with regard to the opportunity.
    
 c. In the event AT&T-WORLD SERVICES and AMERICAN COMPUTER agree to proceed
    with a response, AT&T-WORLD SERVICES agrees to sub-contract per the terms
    of this Agreement to AMERICAN COMPUTER any Products/Services opportunity
    which results from the response.
    
d.  In the event that the parties agree to proceed with a response and multiple
    sources (i.e., agents) wish to respond to the opportunity, each such source
    shall be considered by the parties as related to the opportunity.  The
    parties shall jointly decide whether or not to proceed with each source and
    in the event that the parties are not able to agree or the parties agree
    not to proceed with a particular source, neither party will proceed 
    independently in response to the opportunity with the rejected source.


                                        - 4 -

<PAGE>

5.  PRICING

 1. In recognition of the international marketing costs to be borne by 
    AT&T-WORLD SERVICES, AMERICAN COMPUTER, unless otherwise agreed in writing,
    sets out the price of the Products/Services to be shown on Schedule 2-
    PRODUCT/SERVICE PRICES on a preferential discounted basis to AT&T-WORLD
    SERVICES for the purposes of this Agreement.  Such discount shall be based
    on the volume of the opportunity and shall be at least ten (10%) percent of
    AMERICAN COMPUTER's current List Price and will be at least as favorable as
    any other discount which AMERICAN COMPUTER may offer to any other parties,
    except the Government of the United States, its agencies and branches.
    
 2. AMERICAN COMPUTER will provide AT&T-WORLD SERVICES with any change in its
    Price List at least 30 days prior to the price change becoming effective. 
    No price change will affect any proposals submitted by AT&T-WORLD SERVICES
    before receipt of notice of change and AMERICAN COMPUTER agrees to provide
    Products/Services in accordance with such proposals.
    
 3. The prices shown in Schedule 2-PRODUCT/SERVICE PRICES at the signing of
    this Agreement shall remain in effect at least through December 31, 1991.
    

6.  PAYMENT

For each opportunity the parties will agree on terms of payment.  AT&T-WORLD
SERVICES shall make its best effort to accommodate the payment requirements of
AMERICAN COMPUTER as shown on Schedule 2-PRODUCT/SERVICE PRICES.


7.  TITLE


7.1 TITLE IN EQUIPMENT

Upon award AT&T-WORLD SERVICES and AMERICAN COMPUTER will enter into a contract
for the Product/Services as jointly proposed to and accepted by the customer.

AMERICAN COMPUTER represents that at the time of sale, title to equipment shall
be free from any liens, encumbrances or security interest.

7.2 TITLE TO CUSTOM SOFTWARE

All Software that AMERICAN COMPUTER supplies, acquires and/or develops in
connection with the Products/Services, including code recorded in firmware,
systems software, routines, subroutines, and the like, will be and remain the
property of AMERICAN COMPUTER or its suppliers, both before and after payment of
the Products/Services Price.


                                        - 5 -

<PAGE>

AMERICAN COMPUTER grants to AT&T-WORLD SERVICES the right to issue Custom
Software Licenses under this Agreement for certain of AMERICAN COMPUTER'S
software by means of a License in a format based on that of Schedule 3-Custom
Software Agreement.

8.  LICENSE OF LICENSED PROGRAMS

8.1 GRANT OF LICENSES

Non-transferable and non-exclusive licenses are to be provided to Customers by
AT&T-WORLD SERVICES in a format to be provided by AMERICAN COMPUTER for the
Licensed Programs necessary for the proper operation of the Products/Services
("the Licensed Programs") subject to the following terms and conditions,
provided, however, that if Customer is required to do so it shall execute
software license agreements with the appropriate supplier in terms consistent
with those in this Agreement.

8.2 USE OF LICENSED PROGRAMS

 a. Each license provided under this Agreement authorizes Customer to:

    - use the Licensed Program materials in machine readable form on the
      Products/Services, within the limits of the sizing considerations
      detailed in Schedule 2, and in conjunction therewith to store the
      licensed Program materials in, transmit them through or display them on
      units associated with such designated Products/Services;

    - utilize the Licensed Program materials, in printed form in support of the
      use of the Licensed Programs; and/or,

 b. Customer shall not use, print, copy or translate the Licensed Program in
    whole or in part, unless expressly authorized in this Agreement.

 c. Customer shall not reverse assemble or reverse compile the Licensed
    Programs in whole or in part.

 d. Customer is authorized to use Licensed Programs on:

    - backup Products/Services when the designated Products/Services or an
      associated unit required for the use of the Licensed Program is
      temporarily inoperable until operable status is restored and processing
      on the backup equipment is completed; or,

    - other Products/Services for assembly or compilation of Licensed Program
      materials if the designated Products/Services and its associated units do
      not provide the configuration required for assembly or compilation. Such
      usage shall not expand the authorized use of the licensed programs.

9.  AVAILABILITY OF SPARE PARTS

AMERICAN COMPUTER warrants the availability of necessary spare parts for
Products/Services for a period of at least ten (10) years, or as otherwise
agreed in writing, after Acceptance of the Products/Services by Customer.


                                        - 6 -

<PAGE>

AMERICAN COMPUTER reserves the right to substitute components of like quality
and functionality during this period in order to maintain Products/Services
system functionality per published specification.



10. INFRINGEMENT OF PATENTS


AMERICAN COMPUTER shall indemnify and save AT&T-WORLD SERVICES harmless from any
claims, losses, suits, demands or liens arising from any act of infringement of
any patent, trademark, or copyright or any unauthorised use of any trade secret
or other proprietary interest by any Product/Service of AMERICAN COMPUTER;
provided that AT&T-WORLD SERVICES:


 a. shall give AMERICAN COMPUTER immediate written notice of all claims of such
    infringement and suits and full opportunity and authority to assume the
    sole defense of, and to settle, such suits;

 b. shall furnish to AMERICAN COMPUTER, on request, all information and
    assistance available to AMERICAN COMPUTER for such defence; and shall
    abstain from making any admissions to claimant regarding the claim.

If said item is held to constitute infringement of any patent and its use is
enjoined, AMERICAN COMPUTER shall have the options to:

 a. Replace the item with a non-infringing one;

 b. Procure for Customer the right to continue using said item;

 c. Modify the item so that it becomes non-infringing.

AT&T-WORLD SERVICES agrees to indemnify and save harmless AMERICAN COMPUTER from
all costs, expenses, liabilities and claims for infringement arising from:

 a. Adherence to specifications or drawings which AMERICAN COMPUTER was
    directed by AT&T-WORLD SERVICES to follow; or,

 b. The manufacture, sale or use of a product furnished hereunder in
    combination with another item not furnished by AMERICAN COMPUTER.


11. CONFIDENTIAL INFORMATION

In this Agreement, "Confidential Information" means information regarding a
party, its business, personnel, technical or statistical data, or financial
information that:

 a. is not generally known to the public or to other persons who are not bound
    by the obligations to maintain its confidentiality; and/or,

 b. derives economic or strategic value, actual or potential, from not being
    generally known, or has a character such that the party has a legitimate
    interest in preserving its confidential nature.

As a consequence of entering this Agreement or performing the obligations
herein, the parties may


                                        - 7 -

<PAGE>

have disclosed to them, or they may otherwise have access to, or learn of,
Confidential Information of the other.

Each party agrees to hold in strict confidence all Confidential Information of
the other that it learns of, or is provided with, and to use such Confidential
Information only for the purpose of this Agreement.  Neither party will use,
copy, or disclose to third parties any Confidential Information of the other
party except as contemplated herein.  The parties shall ensure that all third
parties to whom it has to disclose Confidential Information to perform its
obligations under this Agreement acknowledge its confidential nature and agree
to be bound by the provisions of this Clause in a written undertaking.


12. ADVERTISING

Each party agrees that it shall not cause any publicity relating to the
acceptance of any proposal or supply of the Products/Services under this
Agreement to be published in any newspaper, journal or any other medium without
the other party's prior written approval, such approval shall not be
unreasonably with held.


13. TRADEMARKS

Either party will not, without the other party's express written permission
except as provided for in this Agreement the preparation and delivery of
Customer proposals, responses and jointly developed marketing material, use in
advertising, publicity, or otherwise, any tradename, trademark, trade device,
service mark, symbol, code or specification or any abbreviation, contraction, or
simulation thereof of the other, nor shall the other party claim any ownership
therein.


14. EXPORT CONTROL

Each party assures the other that it does not intend to and will not knowingly,
without the prior written consent of the other and the Office of Export
Administration of the United States Department of Commerce, PO Box 273,
Washington, D.C., 20044, U.S.A., transmit directly or indirectly:

 a. any technical information or software furnished under this Agreement; or,

 b. any immediate product (including processes, materials and/or services), if
    any, produced directly by the use of the technical information or software,
    or is a plant capable of producing a commodity or is a major component of
    such a plant furnished under this Agreement;

to Afghanistan, The People's Republic of China, or any Group Q, S, W, Y, or Z
country (or any national or resident thereof) or others that may be designated
in Supplement No. 1 to Section 770 of the Export Administration Regulations
issued by the U.S. Department of Commerce.


15. LIMITATION OF LIABILITY

 1. The liability of AT&T and AMERICAN COMPUTER for any claim arising from any
    cause whatsoever (excepting personal injury and/or death and claims of
    infringement), regardless of the cause of action, whether in contract, tort
    or otherwise, shall in no event exceed the lesser of the direct damages
    actually proven or $10,000. In no event shall either


                                        - 8 -

<PAGE>

    AT&T or AMERICAN COMPUTER be liable to the other for incidental, special,
    consequential or any other direct loss or damage of any kind whatsoever,
    including lost profits or revenues arising out of this Agreement.

 2. Each party shall defend, indemnify and hold harmless the other party from
    any and all claims, suits, actions, demands, costs, settlements, losses,
    damages, expenses and all other liabilities, including attorneys' fees,
    arising out of or resulting from the intentional or negligent acts or
    omissions on the part of any party, its employees, officers, agents or
    independent contractors in the performance of or failure to perform the
    activities contemplated by this Agreement.

 3. For purposes of this section, AT&T shall mean AT&T World Services Inc.,
    American Telephone and Telegraph Company, its affiliates and subsidiaries,
    its officers, employees and agents.


16. FORCE MAJEURE

Neither party shall be liable for any delays and/or non-performance of
contractual obligations hereunder caused by any event beyond the party's
reasonable control (a "Force Majeure"), including but not limited to wars,
riots, the act or failure to act or order of any civil or military authority,
fires, flood and other acts of God, labor disputes, accidents, and other such
events, and all applicable deadlines and milestones will be extended by a period
of time equal to the duration of each such event.  Regardless of the foregoing,
a party that is delayed or prevented from performing its obligations as a
consequence of a Force Majeure will exert diligent efforts to counter the Force
Majeure or otherwise mitigate the effects of the Force Majeure.


17. ESCROW

AMERICAN COMPUTER shall deliver to an Escrow Agent to be selected by AT&T-WORLD
SERVICES, the Application Source Code and the engineering documentation for all
Products/Services, as well as the source code of any customized software
developed under this Agreement.

Delivery of the Source Code and documentation shall begin upon execution of this
Agreement and be completed within one hundred and twenty (120) days thereafter.

The Escrow Agent's fee and related costs of providing and maintaining the Escrow
arrangement shall be borne by AT&T-WORLD SERVICES


18. DEFAULT/TERMINATION

18.1     DEFAULT

Each of the following events shall constitute a default under this Agreement on
the part of the party who commits or is responsible for the same:

 1. any failure by a party to perform or observe any of its material
    obligations under this Agreement and the defaulting party failing to
    correct the default in all material respects


                                        - 9 -

<PAGE>

    within 30 days after receiving a written notice from the non-defaulting
    party requesting that the default be corrected.

 2. if a party is wound-up, or liquidated, or becomes insolvent, or if a
    custodian, receiver, or a receiver-manager is appointed for its business or
    any of its property, or if the party makes an assignment, proposal or
    arrangement for the benefit of creditors, or if it files or has filed
    against it a petition in bankruptcy that it has not dismissed within 30
    days, or if the party discontinues its business.

18.2     TERMINATION

If either party commits a default under this Agreement, then, the non-defaulting
party shall be entitled to terminate this Agreement by giving the defaulting
party written notice of termination, which shall be effective upon receipt by
the defaulting party.

If this Agreement is terminated by AMERICAN COMPUTER under Section 18.1 (2) as
a result of AT&T-WORLD SERVICES's default, AT&T-WORLD SERVICES's right to
market the Products/Services hereunder shall be terminated forthwith.

If this Agreement is terminated by AT&T-WORLD SERVICES under Section 18.1 (2) as
a result of AMERICAN COMPUTER's default, AT&T-WORLD SERVICES shall, in addition
to any other rights or remedies hereof, be entitled to obtain the release of
the Custom Source Code and Engineering documentation for the Products/Services
from an Escrow Agent to be selected and administered per Clause 17.

The Escrow Agent shall be directed to release the escrowed materials only in the
event of AMERICAN COMPUTER's default and the resultant termination of this
Agreement.

AT&T-WORLD SERVICES's obligation will be to use these materials only in the on-
going support and maintenance of customer's with whom AT&T-WORLD SERVICES and
AMERICAN COMPUTER have jointly agreed for the provision of Products/Services
under Clause 3.3 of this Agreement.

AT&T-WORLD SERVICES shall not be entitled to use or distribute these materials
in any manner for any other purpose.

Licenses granted to Customers and Warranty obligations of all Customer supply
agreements outstanding prior to the termination of this Agreement shall not be
diminished or abridged by the termination of this Agreement and each party shall
endeavor to provide all warranty maintenance work for licenses granted if such
warranty maintenance had been granted to the Customer.


19. ARBITRATION

All differences between the parties arising out of, or relating to the
interpretation, application, administration, alleged violation, termination or
invalidity of the Agreement shall be finally settled by arbitration in
accordance with the Arbitration Act 1908 or any statutory modification or
reenactment thereof for the time being in force.

Any such dispute, doubt or question shall be referred to arbitration in New
Jersey of a single arbitrator in case the parties can agree upon one and failing
such an agreement to two (2) arbitrators, one to be appointed by AMERICAN
COMPUTER and one to be appointed by AT&T-WORLD SERVICES, or in a case of
disagreement to an umpire to be appointed by the


                                        - 10 -

<PAGE>

arbitrators before entering upon the reference.  Any such arbitration shall be
conducted in New Jersey.


20. ASSIGNMENT

Neither this Agreement nor the rights and obligations of either party under this
Agreement may be assigned or transferred without the prior written consent of
the other party, such consent shall not be unreasonably withheld.


21. NON-WAIVER

No term or provision of this Agreement shall be deemed to be waived and no
breach excused, unless such waiver or consent shall be in writing and signed by
the party claimed to have waived or consented.  Any consent by any party to, or
waiver of, a breach by the other, whether express or implied, shall not
constitute a consent to, waiver of, or excuse for any other, different or
subsequent breach.


22. SEVERABILITY

In the event that any part or parts of this Agreement shall be held illegal or
null and void by any court or administrative body of competent jurisdiction,
such determination shall not affect the remaining parts of this Agreement which
shall remain in full force and effect as if part or parts held to be illegal or
void had not been included in the Agreement provided that the principal
obligations of the parties are maintained.


23. NOTICE

Any notice, request, or information shall be deemed to be sufficiently given
when sent by registered mail, courier express or by facsimile (confirmed by
registered mail), to the other party, at the following addresses:

         AT&T WORLD SERVICES, INC.
         ROOM C117
         412 Mt. Kemble Plaza
         Morristown, NJ 07960
         U.S.A.
         Attention: Mr. John Jepsen, Managing Director
         
         
         AMERICAN COMPUTER & ELECTRONICS CORPORATION 
         209 PERRY PARKWAY
         GAITHERSBURG, MD 20877
         U.S.A.
         Attention: Mr. Thomas V. Russotto, Vice President
    
Notices by post shall be sufficiently given if sent by registered mail to
AMERICAN COMPUTER'S or AT&T-WORLD SERVICES' address as the case may be.  They
shall be deemed received by the addressee, ten days following the date of
mailing.


                                        - 11 -

<PAGE>

Notice by facsimile shall be deemed received by the addressee (so long as the
correct answer back or acknowledgment is received by the sender) on the same
business day, as the day on which such facsimile is sent.


24. ENTIRE AGREEMENT AND VARIATION

This Agreement constitutes the complete and exclusive statement of the Agreement
between the parties, which supersedes all proposals or prior agreements, oral or
written, and all communications between the parties relating to the subject of
this Agreement.

No amendment to this Agreement shall be effective unless in writing in a format
similar to the format of this Agreement and signed by duly authorized
representatives of both parties.


25. SURVIVAL

The obligations of the parties under this Agreement which by their nature would
continue beyond the expiration, termination or cancellation of this Agreement,
including without limitation, the obligations in the Articles entitled
TRADEMARKS, CONFIDENTIAL INFORMATION, SOFTWARE LICENSES, WARRANTY SUPPORT,
EXPORT CONTROL and ESCROW shall survive the expiration or termination of this
Agreement.


                                        - 12 -

<PAGE>

IN WITNESS WHEREOF these presents have been executed the day and the year first
hereinbefore written:

SIGNED for and on behalf of
AMERICAN COMPUTER by


/s/ George T. Jimenez
- --------------------------------

George T. Jimenez, President      
- --------------------------------

IN THE PRESENCE OF:


/s/ Thomas V. Russotto            
- --------------------------------



SIGNED FOR AND ON BEHALF OF
AT&T WORLD SERVICES INCORPORATED BY


/s/ T. R. Luciano                 
- --------------------------------

T.R. Luciano, Vice President
- --------------------------------

in the presence of:


/s/ John N. Jepsen                
- --------------------------------


                                        - 13 -

<PAGE>

                            SCHEDULE 1: PRODUCTS/SERVICES
                                           
1. DISTRIBUTED CALL MEASUREMENT SYSTEM (DCMS-TM-)

The Distributed Call Measurement System (DCMS-TM-) is a state-of-the-art
microprocessor based system which is employed at telephone company switching
centers to collect data in real-time, process the data to reduce the workload on
downstream processes and transmit the data to a central polling and processing
center.  The DCMS is designed for the central office environment and is capable
of operating in commercial offices with remote administration capabilities.  The
DCMS is compatible with most modern switching devices and is designed to
collect, store and process call accounting data (AMA, LAMA, CAMA, LMS, WATS).

These Products/Services do not include those intended for the cellular telephone
market.

DCMS product number ordering information is attached hereto.

DCMS Configurations:

BASIC REDUNDANT DCMS UNIT

         Processor (68000) with 256 KByte ROM & 2 MByte DRAM -2
         Power converter - 48 volt DC -2
         Multiple slot chassis -2
         Output port (RS-232) -2
         Control port (RS-232 with modem) -2
         Console interface (RS-232 display terminal port) -2
         System monitor/alarm panel -2
         Communications interface (modem) -2
         Disk interface and controller -2
         Disk drive -2
         Switch interfaces -4
         OS/DCMS licensed program
         DCMS utility firmware
         Store and forward software with access security
         Switch specific record processing
         Administrative software
         Maintenance diagnostics
         Automatic alarm recording and reporting
         Duplex hardware/software
         Documentation
         Cable and accessories

BASIC SIMPLEX DCMS UNIT

         Processor (68000) with 256 KByte ROM & 2 MByte DRAM
         Power converter - 48 volt DC
         Multiple slot chassis
         Output port (RS-232)
         Control port (RS-232 with modem)
         Console interface (RS-232 display terminal port)
         System monitor/alarm panel


                                        - 1 -

<PAGE>

         Communications interface (modem)
         Disk interface and controller
         Disk drive
         Switch interfaces -2
         OS/DCMS licensed program
         DCMS utility firmware
         Store and forward software with access security
         Switch specific record processing
         Administrative software
         Maintenance diagnostics
         Automatic alarm recording and reporting
         Documentation
         Cables and accessories
         

BASIC SIMPLEX MIRRORED DISK DCMS UNIT

         Processor (68000) with 256 KByte ROM & 2 MByte DRAM
         Power converter - 48 volt DC
         Multiple slot chassis
         Output port (RS-232)
         Control port (RS-232 with modem)
         Console interface (RS-232 display terminal port)
         System monitor/alarm panel
         Communications interface (modem)
         Disk interface and controller -2
         Disk drive -2
         Switch interfaces -2
         OS/DCMS licensed program
         DCMS utility firmware
         Store and forward software with access security
         Switch specific record processing
         Administrative software
         Maintenance diagnostics
         Automatic alarm recording and reporting
         Documentation
         Cables and accessories


DCMS RECOMMENDED SPARES
         
         Processor (68000) with 256 KByte ROM & 2 MByte DRAM
         Power converter - 48 volt DC
         Serial card (control and output ports)
         System monitor/alarm panel
         Disk interface and controller
         Disk drive
         Switch interface


                                        - 2 -

<PAGE>

2. UNIVERSAL POLLING SYSTEM  (UPS-32-TM-)

The American Computer UPS-32 is a polling and collection system with the ability
to poll American Computer's DCMS, as well as call data collectors supplied by
other manufacturers.  The UPS-32 can collect data from DCMS units using a
blocked asynchronous protocol at up to 19,200 bits per second (bps) over
dedicated facilities and 9,600 bps over the switched telephone network (19,200
with data compression).

The UPS-32 polling software, a licensed program, uses a point-to-point blocked
asynchronous polling protocol that has been optimized for file transfer from the
DCMS to the polling system.  Although the DCMS and UPS-32 can use other
protocols, such as X.25, the blocked asynchronous point-to-point interface has
been found to be the most cost effective for the large file transfers that
characterize billing systems.

The UPS-32 can reformat the received data into a format suitable to a billing
system and even rate the calls (local and toll) which can significantly reduce
the computing load on the billing system.  When used with a DCMS, the UPS-32 can
perform network management functions, and download software updates, rate tables
and V&H table updates, and other system parameters to the DCMS.  The UPS-32 can
also collect other information from the DCMS including traffic, maintenance and
alarm data.

3. UNIVERSAL TRAFFIC SYSTEM (UTS-TM-)

The UTS operates on traffic data collected at the switch site by the DCMS.  The
UTS has been designed to provide traffic engineering reports for many different
switch types.  It would require customization to meet specific Telephone company
requirements.


4. TELECOMMUNICATIONS MANAGEMENT AND REPORTING SYSTEM 
   (TELMARS-TM-)

The TELMARS is a group of integrated licensed program products meeting all 
the management information needs of private, voice and data telephone 
installations. The system reduces costs and increases internal control of 
usage accounting, station equipment management, traffic management, network 
maintenance and operator services.  The specific TELMARS modules offered are:


         LICENSED PROGRAM                         MODULE NAME

         Administrative Billing System                 ABS
         Cable/Facilities Management System            CMS
         Directory Assistance System IV               DAS-IV
         Directory Management System                   DMS
         Rate Schedule System                          RSS
         TELMARS Query Language                        TQL
         Telephone Call Accounting System              TCAS
         Telephone Service Requests                    TSR
         Toll Rating System                            TRS
         Toll Services System                          TSS


                                        - 3 -

<PAGE>

5. NETWORK CONTROL SYSTEM (NETCON-TM-)

The NETCON is American Computer's real-time network control and switch
maintenance function.  It provides the Switch Maintenance Operator (SMO) control
over the operations of each switch in the telecommunications network.  The
NETCON System comprises three sub-functions MAP Transparency Mode, Traffic
Collection and Network Alarm Processing, that interactively provide status
information and control via the host computer system under password security. 
The specific module offered is:

              LICENSED PROGRAM                         MODULE NAME

              Network Control Alarm Processing         NETCON-APS


6. LOCAL/TOLL BILLING SYSTEM INTERFACE (LTBS)

The LTBS interface is used to provide detailed call record billing in
conjunction with the DCMS for electro-mechanical exchanges which are not
inherently capable of providing the necessary call records.  The LTBS is an
"inboard" design where call records are generated at a point of concentration
within the exchange.  The interface is made up of a group of basic building
blocks and is configured for each exchange type and set of customer
requirements.


7. SYSTEM TRAINING

American Computer supports the DCMS, the UPS-32, TELMARS and LTBS by developing
and providing training courses to train personnel in those functions identified
as essential to the effective and efficient operation of the product.  The
functional areas include:


 a. System Overview/Appreciation

 b. Engineering applications

 c. Installation

 d. System administration

 e. User training


8. SYSTEM SUPPORT

American Computer makes available support for all its systems on a yearly
contract basis after the system warranty has expired.  The support is offered in
three levels.

Level I Technical Support provides technical support for all systems software,
licensed programs and hardware included with or closely associated with the DCMS
without additional charges.  The technical support includes a Customer Telephone
Support Service during the normal workday hours; trouble shooting and correction
of interface, polling, documentation, software are or hardware problems; and
replacement of any failed component of the DCMS.


                                        - 4 -

<PAGE>

Level II Technical Support provides all the same services provided under Level I
Technical Support except the replacement of failed DCMS components.  Level II
Technical Support is designed to satisfy the support requirements of the
Customer who maintains a complete set of DCMS spare parts.  If a part is
determined to be malfunctioning, the part is replaced from the Customer's spares
inventory and the defective part returned for a replacement at the return and
repair price.

Level III Technical Support is designed to satisfy Customers who want to
maintain their own DCMS network.  These Customers would normally have a large
number of similarly configured DCMS sites, a full set of spare parts and a staff
that has been trained in the maintenance of the DCMS.  If a part is determined
to be malfunctioning, the part is replaced from the Customer's spares inventory
and the defective part returned for a replacement at the return and repair
price.

Customers selecting Level I or II Technical Support may choose a 24 hour
Telephone Service option.  This service enables customers to report
incidents/problems at any time of the day, each day of the year.

Customers selecting the 24 Hour Telephone Service Option may also choose to
exercise and Emergency Service Request Option.  This option may be requested
during any off-hours service call with a Customer identifying a problem as an
Emergency that requires immediate service.

[Schedule 2 is confidential and omitted and filed separately with the 
Commission]


                                        - 5 -

<PAGE>

                   SCHEDULE 3: FORMAT OF CUSTOM SOFTWARE AGREEMENT
                                           

1. PURPOSE


It is expressly understood between the parties hereto that this Custom Software
Agreement forms part of and is incorporated into the Supply Agreement for the
same date hereof (hereinafter called "the Main Agreement") and except as
expressly varied herein the provisions of the Main Agreement shall apply to this
Custom Software Agreement.


2. GRANT OF RIGHT


 1. Subject to the provisions of the Main Agreement, AT&T-WORLD SERVICES grants
    to ___________________________ a royalty free, perpetual, irrevocable,
    transferable, exclusive right to use the Custom Software in object code
    format solely for ___________________________'s internal business purposes. 
    Such right to use includes the right to adapt, modify and enhance the
    Custom Software in accordance with Clause 2.2 hereof.

 2. ________________ may  make those copies of the Custom Software in object
    code format necessary for the use by ______________ for which rights are
    granted hereunder, provided that each such copy contains any copyright or
    proprietary notice appearing on or in the Custom Software.


3. SUPPLY OF SOURCE CODE


 1. AT&T-WORLD SERVICES shall furnish to ______________________the software
    including both source and object code for the Custom Software on Acceptance
    of the ________________________ system.

 2. No  ownership interest in the Custom Software will be transferred to
    ______________.  _______________________'s interest in any adaptations,
    modifications and enhancements made by _______________________ under the
    terms  of this Agreement is limited to ____________________'s interest in
    such adaptations, modifications and enhancements.  Nothing herein requires
    ______________ to supply any such adaptations, modifications or 
    enhancements to AT&T-WORLD SERVICES or its supplier but the parties may by
    mutual agreement include such adaptations, modifications or enhancements in
    future releases of the Custom Software.


4.  USE OF SOURCE CODE DURING WARRANTY PERIOD


 1. As soon as practicable after Acceptance of the __________________ system,
    AT&T-WORLD SERVICES shall prepare and deliver to ____________________ a
    good quality copy of the Source Code for the Custom Software in machine
    readable format together with related documentation current with all
    versions of the object code then released to _____________________ for its
    use.

 2. _____________________ will hold the material provided under Clause 3.1
    hereof (collectively called "the Source Code") in trust on the terms and
    conditions set out herein for the duration of the Warranty Period.


                                        - 1 -

<PAGE>

 3. _______________________ will store the Source Code in safekeeping that
    provides every reasonable protection against deterioration caused by
    environmental factors and unauthorized access and use.

 4. Subject to Clause 3.5 hereof for the duration of the Warranty Period
    _______________will not access, adapt, modify, enhance or otherwise use the
    Source Code except on the express instruction of AT&T-WORLD SERVICES. 
    Should the Source Code be accessed, adapted, modified or enhanced by any
    person other that AT&T-WORLD SERVICES or its duly authorised representative
    during the Warranty Period then the Warranty provided under the provisions
    of the Main Agreement shall not apply and the Warranty Period shall be
    deemed to have completed.

 5. If AT&T-WORLD SERVICES does not take steps to correct or replace any
    defective Custom Software under the provisions of the Main Agreement, then
    ____________________ may take such steps as necessary to adapt, modify or
    enhance the Custom Software to ensure that the _________________ system
    is free from defects and performs in accordance with the Specification
    (Schedule 5) of the Main Agreement.  Any adaptation, modification or
    enhancement under this Clause 3.5 shall not bring the Warranty Period to an
    end provided however that ____________________ shall have given AT&T-WORLD
    SERVICES written notice of its intention to correct such defect at least
    fourteen days prior to making any such adaptation, modification or
    enhancement.


5. PERMISSION TO MODIFY


Subject to the provisions of Clause 3 hereof ________________________ may adapt,
modify, enhance the Custom Software to form an updated version of the Custom
Software for its own use.


                                        - 2 -

<PAGE>

                            SCHEDULE 4:  ESCROW AGREEMENT
                                           
This Agreement ("ESCROW AGREEMENT") is executed as of___________________between
American Computer and Electronics Corporation, a Maryland corporation ("AMERICAN
COMPUTER"), and AT&T World Services Inc. ("AT&T-WORLD SERVICES").

WHEREAS,

AMERICAN COMPUTER and AT&T-WORLD SERVICES have entered into a Marketing
Agreement pursuant to which AMERICAN COMPUTER has agreed to grant AT&T-WORLD
SERVICES the right to market Products/Services of AMERICAN COMPUTER, being
described with particularity in SCHEDULE 1:  PRODUCTS/SERVICES of the Marketing
Agreement; and

continuous availability of the PRODUCTS/SERVICES are critical to AT&T-WORLD
SERVICES in the conduct of its business with regard to the Marketing Agreement;
and

AMERICAN COMPUTER wishes to ensure that AT&T-WORLD SERVICES has access to the
PRODUCTS/SERVICES and will be able to maintain the PRODUCTS/SERVICES in the
event AMERICAN COMPUTER fails to fulfill its obligations as set forth in the
Marketing Agreement or in the event AMERICAN COMPUTER does not remain in
business; and

an Escrow Agent shall be appointed to act as custodian of the PRODUCTS/SERVICES
material including software source code and related documentation under the
terms and conditions specified herein;

NOW, THEREFORE, in consideration of the promises and mutual covenants contained
herein, and for other good and valuable consideration, receipt of which is
hereby acknowledged, the parties agree as follows:


1. DEPOSIT OF ESCROW ITEMS


The subject materials shall be deposited with the following Escrow Agent:








2. STORAGE AND SECURITY


 a. Agent shall act as custodian of the Escrow Items until this escrow is
    terminated pursuant to Section 4 of this Escrow Agreement.

 b. Agent shall establish, under its sole control, a secure facility and
    receptacle for the purpose of storing the Escrow Items and appropriate to
    the media provided.


                                        - 1 -

<PAGE>

 c. The Escrow Items deposited by AMERICAN COMPUTER shall remain the exclusive
    property of AMERICAN COMPUTER, except as otherwise provided in Section 5.

 d. Except as provided in this Escrow Agreement, Agent is responsible for the
    following:

    1.  it shall not divulge, disclose or otherwise make available to any
         person other than the authorized representative of AMERICAN COMPUTER,
         or make any use whatsoever of the Escrowed Items;

    2.  it shall not permit any person to access the Escrowed Items, except as
        may be necessary for Agent's authorized representatives to perform
        their functions under this Escrow Agreement;

    3.  access to the Escrow Items by AMERICAN COMPUTER shall be granted by
        Agent only to those persons duly authorized in writing by a competent
        officer of AMERICAN COMPUTER;

    4.  access to the Escrow Items shall not be granted without compliance to
        all security and identification procedures instituted by Agent;

    5.  Agent shall have no obligation or responsibility to verify or determine
        that the Escrow Items deposited with Agent by AMERICAN COMPUTER does,
        in fact, consist of those items which AMERICAN COMPUTER is obligated to
        deliver under this or any other agreement, and Agent shall bear no
        responsibility whatsoever to determine the existence, relevance,
        completeness, currency, or accuracy of the Escrow Items.

    6.  Agent's sole responsibility shall be to accept, store and deliver the
        Escrow Items deposited with it by AMERICAN COMPUTER, in accordance with
        the terms and conditions of this Escrow Agreement.

    7.  If any of the Escrow Items held in Escrow by Agent shall be attached,
        garnished, or levied upon pursuant to an order of a court, or the
        delivery thereof shall be stayed or enjoined by an order of court, or
        any other order, judgement or decree shall be made or entered by any
        court affecting the Escrow Items or any part thereof or any act of
        Agent, Agent is hereby expressly authorised in its sole discretion to
        obey and comply with all orders, judgements or decrees so entered or
        issued by any  court, without the necessity of inquiring whether such
        court has jurisdiction, and in the case Agent obeys or complies with
        any such order, judgement or decree, Agent shall not be liable to AT&T-
        WORLD SERVICES, AMERICAN COMPUTER or any third party by reason of
        compliance, notwithstanding that such order, judgement or decree may
        subsequently be reversed, modified or vacated.

3. INSPECTION

AT&T-WORLD SERVICES shall have the right to inspect a listing produced of the
media at AMERICAN COMPUTER's site and verify that Escrow Items have been
deposited by AMERICAN COMPUTER at any time, including after the initial deposit
and subsequent deposits of revised source code or other materials.

4. TERMINATION

This Escrow Agreement shall terminate:

a.  upon expiration or termination of the Marketing Agreement between the
    parties; OR,

<PAGE>

 b. by mutual written agreement between AMERICAN COMPUTER and AT&T-WORLD
    SERVICES, giving sixty (60) calendar days notice to Agent; OR,

 c. for non-payment of fees, but only after notice and sixty (60) calendar days
    within which to cure the non-payment deficiency, by AT&T-WORLD SERVICES

5. EVENTS OF RELEASE

 a. The occurrence of any of the following shall constitute an "Event of
    Release" for purposes of this Escrow Agreement.

    a.  AMERICAN COMPUTER's failure to fulfill its material obligations under
        the Marketing Agreement between AMERICAN COMPUTER and AT&T-WORLD
        SERVICES; OR

    b.  AMERICAN COMPUTER goes out of business; OR

    c.  AT&T-WORLD SERVICES purchases the source code or other Escrowed
        materials.
 
 b. In the event AT&T-WORLD SERVICES does receive access to the source code or
    other Escrow materials being held in Escrow for the protection of AT&T-WORLD
    SERVICES under the terms of this Agreement, AT&T-WORLD SERVICES
    acknowledges such source code or other Escrow material as having restricted
    rights. The proprietary restrictions on the source code to the software
    shall survive the termination of this Agreement in the event AT&T-WORLD
    SERVICES receives access to the software source code hereunder.

    AMERICAN COMPUTER hereby grants AT&T-WORLD SERVICES a security interest in
    the copy of the source code and other Escrow material stored and deposited
    with the Escrow Agent hereunder for the sole purpose of protecting AT&T-
    WORLD SERVICES' access to the source code under the terms of this
    Agreement.  In the event AT&T-WORLD SERVICES is prevented from obtaining
    access to the source code by virtue of the Federal Bankruptcy laws or
    otherwise, AMERICAN COMPUTER hereby consents to lifting the Automatic Stay
    under Section 362 of the Federal Bankruptcy code 12 USC 362, and agrees to
    join in petitioning the Federal Bankruptcy court for relief from the
    Automatic Stay herein provided, and to otherwise take such action as may be
    necessary to perfect and maintain AT&T-WORLD SERVICES' Security interest in
    the escrowed source code and other materials.  As long as AT&T-WORLD
    SERVICES faithfully performs its obligations hereunder, AMERICAN COMPUTER
    agrees to take all necessary steps to preserve AT&T-WORLD SERVICES' rights
    in the escrowed source code and other materials, and to comply with any
    reasonable request of AT&T-WORLD SERVICES respecting the escrow.  AT&T-
    WORLD SERVICES' security interest does not extend to the Software generally
    or to AMERICAN COMPUTER's copyright rights in the Software and other
    escrowed materials.

 c. AMERICAN COMPUTER agrees that the terms and conditions of this Escrow
    Agreement shall be the governing document for the escrow arrangement
    between ______________________and AT&T-WORLD SERVICES.

6. PAYMENT

AT&T-WORLD SERVICES agrees to pay all fees and costs associated with performance
and administration of this Escrow Agreement.


                                        - 2 -

<PAGE>

7. MODIFICATIONS

Modifications to this Escrow Agreement shall be made only through written
agreement by AMERICAN COMPUTER and AT&T-WORLD SERVICES.  Once all parties have
agreed to such modifications, these modifications shall become effective as of
the date of execution of a modified Escrow Agreement.

8. ENTIRE AGREEMENT

This Escrow Agreement, including Exhibits hereto, and the Marketing Agreement
and the Schedules thereof, constitute the entire agreement among the parties,
including the representations, understandings and agreement, either oral or
written between the parties.  The parties acknowledging that AT&T-WORLD SERVICES
has no substantial performance obligations under this Escrow Agreement to
AMERICAN COMPUTER.

IN WITNESS WHEREOF, the parties have executed this Escrow Agreement on the date
first above written.


AMERICAN COMPUTER



/S/ GEORGE T. JIMENEZ             
- -------------------------------
NAME:  George T. Jimenez
TITLE:  President


AT&T-WORLD SERVICES



/S/ T.R. LUCIANO   
- -------------------------------        
NAME:  T.R. Luciano
TITLE:  Vice President



ESCROW AGENT



- -------------------------------
NAME:
TITLE:


                                        - 4 -


<PAGE>


                                                                    EXHIBIT 10.3

February 24, 1994



American Computer and Electronics Corporation
209 Perry Parkway
Gaithersburg, Maryland 20877


FIRM FIXED PRICE                                         SUBCONTRACT NO. LWF547D

PLACED UNDER GOVERNMENT PRIME CONTRACT # N00600-94-D-0344


================================================================================


                              SUBCONTRACT AGREEMENT


The Subcontract Agreement is entered into as of February 24, 1994.

                                     BETWEEN

AT&T Corp., Government Integrated Solutions (GIS), ("COMPANY") a New Jersey 
corporation, having offices at 8403 Colesville Road, Silver Spring, MD  
20910

                                      AND

American Computer and Electronics Corporation ("SUBCONTRACTOR"), a Maryland 
Corporation having its principal office at 209 Perry Parkway, Gaithersburg, 
Maryland 20877.

                                WITNESSETH THAT;

IN CONSIDERATION OF THE PROMISES, MUTUAL COVENANTS AND AGREEMENTS CONTAINED 
HEREIN, THE PARTIES HERETO AGREE AS FOLLOWS:

This Subcontract, effective February 24, 1993 is made between AT&T 
("COMPANY") and American Computer ("SUBCONTRACTOR").  The effort to be 
performed by Subcontractor under this subcontract will be part of AT&T's 
Prime Contract Number N00600-94-D-0344 with the Washington Navy Yard.  The 



<PAGE>


work defined in Section C (Statement of Work) and made a part of this 
subcontract will be performed on a Fixed Price basis, in accordance with 
the AT&T Special Terms and Conditions SECTION D, Contract Clauses SECTION E 
and any other referenced specifications and schedules attached hereto.

SECTION A - CONTENTS OF SUBCONTRACT AND ORDER OF PRECEDENCE

A.1      CONTENTS OF SUBCONTRACT

         * Contract Form/Cover Page/Signature Page

         * Section A - Contents of Subcontract and Order of Precedence

         * Section B - Services and Prices

         * Section C - Statement of Work

         * Section D - AT&T General Provisions

         * Section E - Contract Clauses

         * Section F - Contract Administration

         * Section G - Representations and Certifications

A.2      ORDER OF PRECEDENCE

         In the event of an inconsistency between any of the provisions of 
         this subcontract, the inconsistency shall be resolved by giving 
         precedence to the provisions of the Subcontract in the following 
         order:

         (1) AT&T Special Terms and Conditions, Section D

         (2) The Statement of Work, Section C
         
         (3) Contract Clauses, Section E

         (4) All other sections and attachments.

A.3      ENTIRE AGREEMENT

         Upon acceptance of the subcontract, the Company agrees that the 
         provisions under this subcontract, its attachments and all 
         documents incorporated herein by reference, shall constitute the 



<PAGE>


         entire Subcontract between the parties hereto and supersede all 
         prior agreements relating to the subject matter hereof.  This 
         subcontract may not be modified or terminated orally, and no 
         modification nor any claimed waiver of any of the provisions 
         hereof shall be binding upon Subcontractor unless in writing and 
         signed by AT&T.


         AT&T                                    AMERICAN COMPUTER


By   /s/ Clyde P. Jackson, Jr.          By  /s/ S. Joseph Dorr   
  -----------------------------           -----------------------------
Name CLYDE P. JACKSON, JR.                  Name S. JOSEPH DORR 
 (Typed)                                     (Typed)

Title MANAGER, PURCHASING &                 Title VICE PRESIDENT
      TRANSPORTATION 

Date  June 7, 1994                          Date  June 3, 1994
      ------------                                ------------



<PAGE>


                                                                       Section B
                                                             Subcontract LWF547D

                                    SECTION B

                          SUPPLIES/SERVICES AND PRICES


B.1      STATEMENT OF REQUIREMENTS

The seller shall provide the Software and Documentation described in Section C 
at the prices listed on Attachment B-1 for a total price of $__________. 
[This material is confidential and has been omitted and filed separately with 
the Commission.]


         B.1.1  DELIVERY - TMS System will be built and operational by 
         9-30-94.

         B.1.2  PERIOD OF PERFORMANCE:  1-1-94 through 12-31-94

B.2      WARRANTY

         Warranty begins after Government Acceptance.

B.3      OPTION PRICES AND SCHEDULE

         B.3.1  The Company reserves the right to unilaterally exercise an 
         option to purchase from Subcontractor the listed services in Paragraph
         B.4 "Continuing Maintenance", in whole or in part, by written notice, 
         at any time within the stated option period at the price specified.

B.4      CONTINUING MAINTENANCE:

         The Seller shall provide Continuing Maintenance at the prices 
         described below and detailed on Attachment B-2.

         [This Section B.4 is confidential and the confidential portion has been
         omitted and filed separately with the Commission.]

<PAGE>

         TMS Support Call-Out Maintenance on an "as required" basis.

B.5      RIGHT TO PROCURE ADDITIONAL QUANTITIES OF SUPPLIES/SERVICES

         The Company reserves the right to procure additional quantities of 
         supplies/services at the unit prices specified thereto.  Such right 
         shall be exercisable by the Company for a 5 year period from the 
         effective date of the Subcontract.

B.6      FIXED PRICE

         Fixed price is contingent upon anticipated receipt of Delivery Orders 
         from the Government.  The Company will issue Subcontractor a purchase 
         order for work to be performed under this contract.  Subcontractor 
         will not be expected to perform services without a purchase order.

         If all or a portion of this subcontract is not ordered by the 
         Government, there will be a reduction of unit price plus training both 
         on hours and equipment in accordance with the price breakdowns on 
         Attachment B-3 dated October 3, 1993 modified by the delta Proposal 
         Attachment B-4.

B.7      TYPE OF SUBCONTRACT

         The Subcontract awarded hereunder is a firm fixed price, supply, type 
         subcontract.  The prices specified shall not be increased due to 
         increased labor or materials costs during the term of this Subcontract 
         unless otherwise specified herein.

         (Attachments B-1, B-2, B-3 and B-4 are confidential and have been 
         omitted and filed separately with the Commission)

<PAGE>


                                                                       Section C
                                                            Subcontract #LWF547D


                                    SECTION C

                                STATEMENT OF WORK


1.   SCOPE

This Statement Of Work (SOW) defines the requirements for the supplier to 
design, develop, and implement the necessary software and hardware to provide 
the Department of State (DOS), located in Washington, D.C., certain 
telecommunication management systems.  DOS will provide work area and office 
equipment, as required, for sub-contractor personnel on site.

These systems shall provide a fully inter-operable automated solution to 
address work order receipt and processing, trouble call receipt and 
processing, installation records, maintenance record activity, cable and wire 
records, cost allocation for billing to end users number of all upgrades in 
addition, long distance and local calls, including on-net calls, and 
directory services.  Subcontractor's effort shall be in support of the DOS 
Consolidated Telecommunications Services (CTS) procurement.

1.1. REFERENCED PARAGRAPH CITATION

Where paragraphs of this specification or any of its reference documents are 
cited, the citation shall be understood to include all subparagraphs unless 
otherwise noted.

1.2. BACKGROUND

The CTS Prime Contract awarded by DOS will provide for the furnishing of 
services to operate and maintain the in-service operational automatic dial 
telephone switching system providing switched voice and data 
telecommunications services to the United States Department of State, Agency 
for International Development (AID), and the U.S. Arms Control and 
Disarmament Agency (ACDA).  For the purposes of this document, all the above 
shall be collectively referred to as DOS.

The CTS Prime Contract will include the operation and maintenance of the 
existing network, of subscriber station equipment, attendant 



<PAGE>


cabinets/consoles, ancillary equipment, and house cable to provide 
on-premises and off-premises telephone service to DOS users, and will have 
responsibility for coordination with suppliers of common carrier facilities 
and services.  It will provide for support personnel to perform 
telemanagement services to assist in administration and management of these 
services and for installation and maintenance functions associated with the 
continued provision of reliable and effective voice and data communications.  
It will also permit upgrades and improvements to the existing network, which 
through the implementation of new technology, will provide cost-effective 
enhancements, resulting in productivity gains and lower costs for 
telecommunications.  It will permit acquisition of additional equipment and 
services, which may interconnect and interoperate with the existing network 
to accommodate the establishment of new additional domestic DOS annexes and 
field offices, networked or stand-alone, and for replacement or consolidation 
of existing switches.

DOS seeks to establish a single contract for support of telecommunications 
operations of switched voice, data, and video services for the Department of 
State, AID, and ACDA.  The CTS Prime Contract will be for a period of 1 year, 
with nine optional 1-year renewals, for a maximum of 10 years.  It is the 
Department's objective in this acquisition to continue provision of the 
existing communications system and services, including timely upgrades and 
improvements that provide cost-effective enhancements resulting in 
productivity gains and/or lower costs for telecommunications.  It is also 
intended that the CFS Prime Contract provide for acquisition of additional 
equipment and services to accommodate the establishment of new additional 
domestic DOS annexes and field offices, and for the replacement or 
consolidation of existing switches.  Contractor support of the DOS 
Consolidated Telecommunications System operations is required in the areas of 
installation and maintenance, switch administration, network recovery, 
software, trouble reporting and tracking, call accounting and billing, 
Telecommunications Service Request processing and tracking, network design, 
equipment upgrades, data processing support, toll fraud and abuse prevention, 
etc.  Further, network management, to include integration of the CTS network 
operations with public switched and international networks, must be included.

In support of this source selection, AT&T is the prime contractor, and is 
seeking to subcontract portions of the CTS Prime Contract in the areas of 
Telecommunications Management Systems (TMS) development, acquisition, and 
support.  This SOW describes the intended effort that American Computer is 
being requested to subcontract.



<PAGE>


2.   APPLICABLE DOCUMENTS

The documents listed in this section form a part of this SOW to the extent 
invoked by specific reference in other paragraphs of this SOW.  If a 
specification is referenced without indicating any specific paragraphs as 
being applicable, then the specification is applicable in its entirety.  
Where a specific issue of the document is cited, no other issue shall be used 
without prior written approval of the Company.  Where no specific issue of 
the document is cited, the issue in effect at the time of the issuance of the 
RFP shall apply.

2.1. Government Documents

DOCUMENT                DESCRIPTION
AFSCP-800-43            Software Management Indicators
DOD-STD-2168            Defense Systems Software Quality Programs 29 Apr. 88
DOD-STD-480B            Configuration Control Engineering Changes Deviations 
and Waivers
                        15 Jul. 88
MIL-STD-1003            Software Development Methodology
MIL-STD-1521B(l)        Technical Reviews And Audits 18 Dec. 85
MIL-STD-1840A           Automated Interchange Of Technical Information Notice 
1, 20 Dec.              88

MIL-STD-480B            Configuration Management
MIL-STD-482A            Configuration Status Accounting Systems 1 Apr. 74
MIL-STD-483A            Configuration Management Practices 4 Jun. 87
MIL-STD-490A            MIL STD, Specification Practices 4 Jun. 85
MIL-STD-499B            Engineering Management
MIL-STD-63A             Definitions And Units, EMI/EMC
MIL-STD-810E            Test Methods and Engineering Guidelines 14 Jul. 89
MIL-STD-831                  Qualification Test Reports
MIL-STD-970                  Standards and Specifications, Order of Precedence
Notice 1

2.2. OTHER DOCUMENTS

DOCUMENT                DESCRIPTION



<PAGE>


3. REQUIREMENTS

3.1. Project Management

3.1.1. GENERAL
Subcontractor shall establish a project management organization with the 
authority to commit the required resources to fulfill the obligations 
specified herein.  Individuals must be clearly assigned with direct 
responsibilities relative to this project.  Subcontractor shall prepare a 
program organization structure and responsibility matrix that defines lines 
of authority without redundancy, and provides function and responsibility 
statements for each manager.

3.1.2. PROJECT OFFICE

3.1.2.1. PROJECT MANAGER
Subcontractor shall designate a Project Manager (PM) who shall, within the 
scope of the Master Agreement, take direction exclusively from and report to 
Company's Subcontract Manager regarding technical and administrative matters. 
 Subcontractor's PM shall have sufficient authority, management support, and 
resources to commit Subcontractor to take those actions necessary to 
accomplish all contractual obligations.  Subcontractor's PM shall have full 
responsibility and authority for all members of Subcontractor's project 
management organization.

Subcontractor shall communicate with the Company to exchange technical 
comments, coordinate data or schedules, and in general perform necessary 
liaison to maintain an on-schedule/on-cost effort.  Subcontractor shall make 
such visits to Company, and vice versa, as required for assistance or 
coordination toward the integration of Subcontractor's effort with Company's 
activities.  Subcontractor shall supply a monthly report in writing including 
the hours expended per month by task including hours expended to date.

Subcontractor shall establish and identify points of contact with principal 
personnel to ensure proper coordination and communication.  Subcontractor 
shall conduct monthly, or more frequently as required, PRMs at 
Subcontractor's facility to review the project's technical, cost, schedule, 
and risk status.  Company shall have the right to attend PRMs.  PRMs shall be 
attended by the Cost Account Managers or by their designated representatives. 
 PRMs are informal in nature, and are intended to improve communication and 
facilitate decision-making.

Subcontractor shall implement a single, comprehensive Action Item Tracking 
System (AITS) to provide status on all action items generated during 



<PAGE>


Technical Coordination Meetings (TCMs), PRMs, and formal technical reviews 
and audits.  A status report of all open action items shall be reviewed and 
updated at each PRM.

3.1.2.2. COMPANY'S PROJECT REVIEW MEETINGS (PRMS)

Subcontractor shall provide an individual to attend Company's monthly PRMs at 
Company's facility and to be prepared to brief Company on Subcontractor's 
technical, cost, schedule, and risk status.

3.1.2.3. COMPANY-FURNISHED PROPERTY MANAGEMENT
Subcontractor shall be responsible and accountable for all items of 
Company-Furnished Equipment (BFE) and Company-Furnished Information (BFI).  
Subcontractor shall exercise due care to safeguard BFE/BFI from loss, 
improper disclosure, damage, or destruction.  BFE/BFI shall not be furnished 
to third parties without prior written approval from Company.  Subcontractor 
shall maintain an inventory of all BFE/BFI and provide Company with a copy of 
the inventory monthly, indicating the location of all items.

3.2. TMS SOFTWARE DEVELOPMENT PROGRAM (SLIN 0011AA)

3.2.1. QUALITY ASSURANCE
Subcontractor shall implement a Quality Assurance program consistent with ISO 
9000 guidelines.  Subcontractor shall and apply its standard software 
development program and methodology for its COTS products as documented in 
the supplier's TMS Quality Assurance Policies and Procedures Manual (TMS/QA 
Std. 1992-0731) and the supplier's Software Quality Assurance Program 
(TMS-QA-0001).  Subcontractor shall apply its standard software quality 
assurance program for its COTS products as documented in the supplier's 
Software Quality Assurance Program (TMS-QA-0001).  These documents are based 
on ANSI approved IEEE Software Engineering Standards and ISO 9000 guidelines. 
Please note that the TMS acronym when used in reference to supplier's 
standards documents means the Telecommunication Management Systems Division.  
Company reserves the right to approve Subcontractor's inspection, test, and 
validation procedures and to verify any inspections and tests deemed 
necessary to the buyer for acceptance of procedures and products.

3.2.3. SYSTEMS/SPECIALTY ENGINEERING
Subcontractor shall establish a Systems Engineering Management (SEM) process 
for the TMS.  A lead systems engineering person shall be identified by the 
Subcontractor as the principal point of contact for the TMS effort.  This 
process shall establish checkpoints early in the design to assure that 
reliability, testability, and affordability are designed into the product.



<PAGE>


3.2.3.1. SYSTEMS ANALYSIS
Subcontractor shall perform an engineering analysis to include TMS 
requirements included in the CTS Contract paragraph C.12.2 (American Computer 
has been provided a copy of the CTS Contract and requirements for Company to 
provide services to DOS under the life of the CTS program.  The analysis will 
allow for the selection of an architecture and design(s) that will comply 
with the requirements of the approved TMS Program Specification.  This 
analysis shall describe the technical requirements of an operational 
system/subsystem and allocate requirements to functional areas.  
Subcontractor may use locally prepared Requirement Allocation Sheets (RAS) to 
document this effort.  The analysis shall also define interface parameters 
and their relationship among other areas including design constraints.  
Analyses shall be updated prior to Formal Reviews and Audits.  Updated 
results of analyses shall be presented at Formal Reviews and Audits.

Attachment 2 is a listing of Government Furnished Equipment (GFE) available 
to the Prime Contractor for incorporation into the TMS.  This listing is an 
inventory of ADP hardware/software.  If required, any part of this material 
may be used for incorporation into the TMS.

Subcontractor shall prepare Prime Item Product Function Specifications (PFS) 
for the TMS, consistent with MIL-STD-490, Appendix VII.

3.2.3.2. FORMAL REVIEWS AND AUDITS
Subcontractor shall conduct the following Formal Reviews and Audits at 
Subcontractor's Facility using MIL-STD-1521B and Appendices as guides as 
cited below:

     a. System Software Review (SSR) (Appendix C)
     b. Preliminary Design Review (PDR) (Appendix D)
     c. Critical Design Review (CDR) (Appendix E)
     d. Test Readiness Review (TRR) (Appendix F)
     e. Functional Configuration Audit (FCA) (Appendix G).

Subcontractor shall prepare Meeting Agenda Recommendations for Reviews and 
Audits.  Subcontractor shall prepare presentation materials and minutes, 
including action items that document the results of each Formal Review and 
Audit.  The minutes shall contain a list of all attendees and all 
presentation materials.

Presentation materials shall be furnished to Company, 5 working days before 
each formal review or audit.  Design reviews shall be considered complete 



<PAGE>


when all of Subcontractor's action items generated during these reviews 
have been resolved, dispositioned, and documented by the Company.

Subcontractor's project manager and support personnel shall attend all of 
Company's formal reviews with Company's customer and be prepared to advise 
and assist in the preparation and presentation of briefing materials.

3.2.3.4. ACCESS TO DESIGN DATA
Company shall have the right to review all design data generated during the 
design process, including but not limited to calculations, engineer's notes, 
and Computer-Aided Engineering (CAE) data bases, in Subcontractor's format.

3.2.4. TMS SOFTWARE DEVELOPMENT
Subcontractor shall tailor existing commercial TMS applications software 
modules to meet the requirements of the Company-approved, Subcontractor 
agreed to, latest TMS Program Specification.  This tailoring shall include 
modifications necessary to meet the identified requirements.  Subcontractor 
shall implement a software development engineering process using best 
commercial practices.

The subcontractor shall provide updated versions of both the DBMS (i.e. 
Oracle, etc) and the applications software (ITX) as enhancements become 
available and shall follow the procedures for an ECP.  The subcontractor must 
support the software for the life of the contract in its current version.  If 
the subcontractor has added enhancements to the software application and the 
government has requested an upgrade, the subcontractor shall follow the 
procedures for an Engineering Change Proposal.  The subcontractor shall 
provide application and system software on either 3 1/2" diskettes or 
cartridge tape and one copy of all associated reference manuals.

3.2.4.1 GOVERNMENT OPEN SYSTEMS INTERCONNECTION PROFILE COMPLIANCE
The subcontractor shall comply with the GOSIP standards as specified in the 
CTS contract paragraph C.4.1.7.

3.24.2 SECURITY
The subcontractor shall comply with the Security requirements as specified in 
the CTS contract paragraph C.3.3.

3.2.5 INTEGRATION AND TEST

3.2.5.1. GENERAL
Subcontractor shall implement and manage a program to define, conduct, 
evaluate, and document the results of demonstrations, inspections, and 



<PAGE>


tests required to support engineering development, and to verify that 
Subcontractor's equipment satisfies the requirements of the TMS Program 
Specification.

Company shall have the right to witness any and all Subcontractor's 
simulations, walk-throughs, demonstrations, and/or tests performed.

3.2.5.2 DEVELOPMENTAL TESTING
Subcontractor shall conduct developmental testing as necessary.

3.2.5.3. ACCEPTANCE TESTING
The subcontractor must prepare a Program Test Plan that identifies the test 
and acceptance procedures to be used to demonstrate system readiness prior 
to cutover and after cutover for final system acceptance.  The Plan must be 
submitted to AT&T 14 days prior to the CTS CDRL delivery date of June 1, 
1994.

This plan must provide for documenting that all equipment and services 
being offered by the subcontractor comply with all of the terms and 
conditions of the contract.

On the first business day following cutover, the System will enter the 
Acceptance Test phase wherein the System will be required to operate at 
design specifications, without a major failure, for 30 consecutive days.  
The acceptance testing will thoroughly validate all hardware and software; 
the Acceptance Test Plan must include the subcontractor's detailed test 
procedures, methods, and test equipment to be used.

All test results and observations shall be documented in detail and 
submitted to AT&T within 5 working days after the conclusion of each test.  
Upon final system acceptance, all previous test results performed on-site 
shall be consolidated and provided as supporting documentation.

3.2.5.3.l ACCEPTANCE TEST CRITERIA
     1.  The System shall operate continuously without interruption over a 
         30 day period following cutover.  A service affecting CPU restart 
         in an active processor of the system shall indicate failure of 
         this criteria.

     2.  The System shall continuously provide real time and historical 
         system performance data, without interruption, over the 
         acceptance period.  This performance data will only be analyzed 
         by on-site personnel.  Off-site remote maintenance will be 
         permissible only with Company authorization.  Hard copy 
         information must not be removed from the complex without the 



<PAGE>


         express authorization of the TSO.  The performance data shall 
         include, but not be limited to, the following:

              - Maintenance messages
              - System statistics
              - Software errors
              - System initialization/reload.

     3.  The System shall provide sufficient memory to properly execute 
         all system program instructions and all feature activations 
         continuously and without interruption during the acceptance 
         period.  If requested by AT&T, the subcontractor shall provide a 
         daily report generated by the System showing the status of memory 
         allocation.


If any maintenance work will require the interruption of service to users, 
attendants, or system administrators, this work must be clearly identified 
and the nature and extent of the interruption described in detail as an 
attachment to the schedule.

3.2.6.4 RESPONSE TIMES 
The subcontractor shall commence work on all trouble reports within 2 hours 
of notification within the PPM and be on site within four (4) hours if 
required.  All malfunctions shall be corrected within 24 hours of 
notification.  AC shall provide a name and telephone number for trouble 
reporting which must be available for call out 24 hours per day/7 days per 
week/365 days per year.  AC will dispatch on a time basis when requested by 
AT&T outside of 8:00am - 5:00pm Monday-Friday.  The subcontractor shall 
provide escalation procedures and contacts for problem resolution.  The 
procedures shall indicate the tiered support staff for handling out-of-
service conditions.  The subcontractor shall provide status of all pending 
troubles to the contractor personnel.

3.2.6.5 TECHNICAL SUPPORT "HOT LINE"
The subcontractor shall provide remote technical support during the PPM 
including call receipt, application support, hardware support as part of 
standard warranty and post warranty monthly maintenance.

3.2.6.6 PRODUCT SUPPORT SERVICES FOR SOFTWARE
Product support services for the TELMARST-TM- Software shall include the 
following:



<PAGE>


     1.  Resolution of problems associated with generic and custom 
         application software provided by Subcontractor.

     2.  Improvements made available through new releases of the 
         application software features that resolve problems or potential 
         problems inherent in the customer's software set.
         
     3.  Installation of the new software release via remote dial-up 
         access.

     4.  Old version to new version conversion tools as necessary.

     5.  Documentation updates and improvements.

3.18. PREPARE AND CONDUCT CABLE AND WIRING SYSTEM TRAINING (SLIN 0028AJ)
Subcontractor will provide cable management course material for 
incorporation into AT&T Cable and Wiring System Course.



<PAGE>


                                                                       SECTION D
                                                            Subcontract #LWF547D


                                    SECTION D

                             AT&T GENERAL PROVISIONS



ARTICLE                 DESCRIPTION


I                       GENERAL PROVISIONS APPLICABLE TO ENTIRE AGREEMENT

II                      LEASE - NOT APPLICABLE

III                     PROVISIONS APPLICABLE TO PURCHASE OF DATA PROCESSING 
                        EQUIPMENT AND MATERIALS

IV                      PROVISIONS APPLICABLE TO LICENSE OF SOFTWARE FOR DATA 
                        PROCESSING SOFTWARE

V                       PROVISIONS APPLICABLE TO MAINTENANCE SERVICES FOR DATA 
                        PROCESSING EQUIPMENT



<PAGE>


                                                                       SECTION D
                                                            Subcontract #LWF547D

                                    ARTICLE I

SCOPE OF AGREEMENT

This Subcontract is applicable to the procurement by Company from 
Subcontractor of Subcontractor's Data Processing Equipment, including any 
software normally furnished with the equipment (the "Equipment"), Software 
including programs and documentation (the "Software"), maintenance and 
other services (the "Services") and associated supplies (the "Materials").

ORDER

The term "Order" shall mean Company's form of purchase order used for the 
purpose of ordering Equipment, Software, Services or Materials.  Each Order 
shall reference this Subcontract thereby incorporating the terms and 
conditions of this Subcontract in such Order.  If notice of rejection of an 
Order is not received by Company within twenty (20) days from the date of 
issuance of an Order, such Order shall be deemed to have been accepted by 
Subcontractor.

ASSIGNMENT

Subcontractor shall not assign any right or interest under this Subcontract 
or an Order (excepting monies due or to become due) nor delegate any work 
or other obligation to be performed or owed by Subcontractor under this 
Subcontract or an Order without the prior written consent of Company.  Any 
attempted assignment or delegation in contravention of the above provisions 
shall be void and ineffective.  Any assignment of monies shall be void and 
ineffective to the extent that (1) Subcontractor shall not have given 
Company at least thirty (30) days' prior written notice of such assignment 
and (2) such assignment attempts to impose upon Company obligations to the 
assignee additional to the payment of such monies, or to preclude Company 
from dealing solely and directly with Subcontractor in all matters 
pertaining to this Subcontract or an Order including the negotiation of 
amendments or settlements of charges due.

ASSIGNMENT BY COMPANY

Company shall have the right to assign this Subcontract or an Order and to 
assign its rights and delegate its duties under this Subcontract or an 
Order either in whole or in part (an "assignment"), at any time and without 
Subcontractor's consent, to any present or future affiliate of American 



<PAGE>


Telephone and Telegraph Company.  Company shall give Subcontractor written 
notice of any assignment.  The assignment shall neither affect nor diminish 
any rights or duties that Subcontractor or Company may then or thereafter 
have as to Equipment, Software, Services or Materials ordered by Company 
prior to the effective date of the assignment.  Upon the acceptance of the 
assignment and assumption of the duties under this Subcontract or the Order 
by the assignee, Company shall be released and discharged, to the extent of 
the assignment, from all further duties under this Subcontract or the Order 
as to Equipment, Software, Services or Materials not ordered by Company by 
the effective date of the assignment.

CHOICE OF LAW

The construction, interpretation and performance of this Subcontract and an 
Order and all transactions under either of them shall be governed by the 
laws of the State of New Jersey, excluding its choice of law rules and 
excluding the Convention for the International Sale of Goods.  The parties 
agree that the provisions of Article 2 "Sales" of the New Jersey Uniform 
Commercial Code apply to this Subcontract and an Order and all transactions 
under either of them, including agreements and transactions relating to the 
furnishing of services, the lease or rental of material, and the license of 
software.  Subcontractor agrees to submit to the jurisdiction of any court 
wherein an action is commenced against Company based on a claim for which 
Subcontractor has agreed to indemnify Company under this Subcontract or an 
Order.

CLEAN UP

Upon completion of installation or removal of the Equipment or of any other 
Services performed on Company's premises, Subcontractor shall promptly 
remove all implements, surplus materials and debris in respect of such 
activities.

COMPLIANCE WITH LAWS

Subcontractor and all persons furnished by it shall comply with the Fair 
Labor Standards Act and the Occupational Safety and Health Act and all 
other applicable federal, state, county and local laws, ordinances, 
regulations and codes, including identification and procurement of required 
permits, certificates, approvals and inspections, in the performance of an 
Order.  Subcontractor shall indemnify Company from any loss or damage that 
may be sustained by reason of any failure to do so.



<PAGE>


EMERGENCY

Subcontractor shall use its best efforts to assist Company in obtaining 
components and equipment compatible with the Equipment in the event of an 
emergency.

FORCE MAJEURE

Neither party shall be held responsible for any delay or failure in 
performance of any part of an Order to the extent such delay or failure is 
caused by fire, flood, explosion, war, strike, embargo, government 
requirement, civil or military authority, act of God, act or omission of 
carriers or other similar causes beyond its control ("force majeure 
conditions").  If any force majeure condition occurs, the party delayed or 
unable to perform shall give immediate notice to the other party, and the 
party affected by the other's delay or inability to perform may elect to: 
(a) terminate the Order as to any Equipment, Software or Materials which 
have not been shipped or as to any Services which have not been commenced, 
(b) suspend the Order for the duration of the force majeure condition, and 
as the case may be (1) obtain a lease elsewhere for equipment to perform 
the functions of the Equipment leased under the Order and deduct from the 
term of the Order the time for which such other lease was obtained, 
(2) obtain a license elsewhere for software to perform the functions of the 
Software licensed under the Order and deduct from the term of the Order the 
time for which such other license was obtained or (3) buy or sell elsewhere 
equipment, materials or maintenance services to be bought or sold under an 
Order and deduct from any commitment the equipment, materials or 
maintenance services bought or sold or for which commitments have been made 
elsewhere or (c) resume performance under the Order for the full term once 
the force majeure condition ceases with an option in the affected party to 
extend such term up to the length of time the force majeure condition 
endured.  Unless written notice is given within thirty (30) days after the 
affected party is notified of the force majeure condition, (b) shall be 
deemed selected.

FUTURE IMPROVEMENTS AND BENEFITS

As Subcontractor announces improvements, upgrades, field modifications and 
the like ("enhancements"), Subcontractor shall advise Company of their 
features and advantages.  As to the Equipment, Software, Materials, 
Services and such enhancements, Subcontractor has assured Company that all 
prices, terms, warranties and benefits granted to Company by Subcontractor 
are at least as favorable as those now offered by Subcontractor to any of 
its commercial customers.  If, during the term of this Subcontract, 
Subcontractor should enter into an arrangement with any other customer 



<PAGE>


providing greater benefits or more favorable terms, this Subcontract shall 
thereupon be deemed to be amended to provide the same to Company under the 
same conditions.

GOVERNMENT CONTRACT PROVISIONS

If an Order contains a notation that the Equipment, Software, Services or 
Materials is intended for use under a Government Contract, it shall be 
subject to the then current Government Contract Provisions printed on or 
attached to such Order.

HARMONY

Subcontractor shall be entirely responsible for all persons furnished by it 
working in harmony with all others when Subcontractor is working on 
Company's premises.  Company shall be entirely responsible for its 
personnel, including its contractors, working in harmony with 
Subcontractor's personnel on Company's premises.

IDENTIFICATION

Subcontractor shall make no use of any identification of Company, American 
Telephone and Telegraph Company ("AT&T") or their associated companies in 
its advertising or promotional efforts in reference to activities 
undertaken by Subcontractor under this Subcontract or an Order.  The term 
"identification" includes any trade name, trademark, service mark, 
insignia, symbol or any simulation thereof, and any code, drawing, 
specification or evidence of Company's inspection.  Subcontractor shall 
remove any such identification prior to any sale, use or disposition of 
Materials, Equipment or Software rejected or not purchased by Company, and 
shall indemnify Company, AT&T and their associated companies against any 
claim arising out of Subcontractor's failure to do so.  This clause does 
not modify the USE OF INFORMATION clause.

IMPLEADER

Subcontractor agrees that it shall not implead or bring any action against 
Company or its employees based on any claim by a person for personal injury 
or death that occurs in the course or scope of employment of such person by 
Company and that arises out of Equipment, Software, Services or Materials 
furnished under an Order.



<PAGE>


INDEMNITY

All persons furnished by Subcontractor shall be considered solely 
Subcontractor's employees or agents, and Subcontractor shall be responsible 
for payment of all unemployment, social security and other payroll taxes, 
including contributions when required by law.  Subcontractor agrees to 
indemnify and save harmless Company, its affiliates and its customers and 
their officers, directors, employees, successors and assigns (all 
hereinafter referred to in this clause as "Company") from and against any 
losses, damages, claims, demands, suits, liabilities and expenses 
(including reasonable attorneys' fees) that arise out of or result from: 
(1) injuries or death to persons or damage to property, including theft, in 
any way arising out of or occasioned by, caused or alleged to have been 
caused by or on account of the performance of the work or services 
performed by Subcontractor or persons furnished by Subcontractor, 
(2) assertions under Workers' Compensation or similar acts made by persons 
furnished by Subcontractor or by any subcontractor, or by reason of any 
injuries to such persons for which Company would be responsible under 
Workers' Compensation or similar acts if the persons were employed by 
Company, (3) any failure on the part of Subcontractor to satisfy all claims 
for labor, equipment, materials, and other obligations relating directly or 
indirectly to the performance of the Work; or (4) any failure by 
Subcontractor to perform Subcontractor's obligations under this clause or 
the INSURANCE clause.  Subcontractor agrees to defend Company, at Company's 
request, against any such claim, demand or suit.  Company agrees to notify 
Subcontractor within a reasonable time of any written claims or demands 
against Company for which Subcontractor is responsible under this clause.

INFRINGEMENT

The following terms apply to any infringement, or claim of infringement, of 
any patent, trademark, copyright, trade secret or other proprietary 
interest based on the manufacture, installation, normal use, lease or sale 
of any equipment, program, documentation, service or material (hereinafter 
"material") furnished to Company under this Subcontract or an Order or in 
contemplation of this Subcontract or an Order.  Subcontractor shall 
indemnify Company for any loss, damage, expense or liability that may 
result by reason of any such infringement or claim, except where such 
infringement or claim arises solely from Subcontractor's adherence to 
Company's written instructions or directions which involve the use of 
material other than (1) commercial material which is available on the open 
market or is the same as such material or (2) material of Subcontractor's 
origin, design or selection; and Company shall so indemnify Subcontractor 
in such excepted cases.  Each party shall defend or settle, at its own 
expense, any action or suit against the other for which it is responsible 



<PAGE>


under this clause.  Each party shall notify the other promptly of any claim 
of infringement for which the other is responsible, and shall cooperate 
with the other in every reasonable way to facilitate the defense of any 
such claim.

INSURANCE

Subcontractor shall maintain and cause Subcontractor's subcontractors to 
maintain during the term of this Agreement (1) Workers' Compensation 
insurance as prescribed by the law of the state or nation in which the work 
is performed; (2) employer's liability insurance with limits of at least 
$300,000 for each occurrence; (3) comprehensive automobile liability 
insurance if the use of motor vehicles is required, with limits of at least 
$1,000,000 combined single limit for bodily injury and property damage for 
each occurrence; (4) Comprehensive General Liability ("CGL") insurance, 
including Blanket Contractual Liability and Broad Form Property damage, 
with limits of at least $1,000,000 combined single limit for personal 
injury and property damage for each occurrence; (5) if the furnishing to 
Company (by sale or otherwise) of products or materials is involved, CGL 
insurance endorsed to include products liability and completed operations 
coverage in the amount of $5,000,000 for each occurrence; and (6) Errors 
and Omissions Insurance in the amount of at least $1,000,000 per claim with 
an annual aggregate of at least $3,000,000 inclusive of legal defense 
costs.  All CGL insurance shall designate American Telephone and Telegraph 
Company, its affiliates and their officers, directors, and employees (all 
hereinafter referred to in this clause as "Company") as an additional 
insured.  All such insurance must be primary and required to respond and 
pay prior to any other available coverage.

Subcontractor agrees that Subcontractor, Subcontractor's insurer(s) and 
anyone claiming by, through, under or in Subcontractor's behalf shall have 
no claim, right of action or right of subrogation against Company and its 
customers based on any loss or liability insured against under the 
foregoing insurance.  Subcontractor and Subcontractor's subcontractors 
shall furnish prior to the start of work certificates or adequate proof of 
the foregoing insurance including, if specifically requested by Company, 
copies of the endorsements and insurance policies.  Company shall be 
notified in writing at least thirty (30) days prior to cancellation of or 
any change in the policy.

LABOR RELATIONS

Subcontractor shall be responsible for its own labor relations with any 
trade or union represented among its employees and shall be responsible for 
adjusting all disputes between itself, its employees or any union 



<PAGE>


representing such employees.  The provisions of this paragraph shall be 
extended by Subcontractor to all subcontractors hereunder.  Subcontractor 
shall immediately notify Company if Subcontractor has knowledge of actual 
or potential labor dispute which is delaying or could delay the timely 
performance of this Subcontract or an Order.

LICENSES

No licenses, express or implied, under any patents or copyrights are 
granted by Company to Subcontractor under this Subcontract or an Order.

NONWAIVER

No course of dealing or failure of either party to strictly enforce any 
term, right or condition of this Subcontract or an Order shall be construed 
as a waiver of such term, right or condition.

OPERATING SYSTEM SOFTWARE

The term Equipment includes any software (operating program in machine 
readable form and feature descriptions or firmware) normally furnished with 
or embedded in the Equipment.  Title to such software shall remain in 
Subcontractor.  For the life of the Equipment listed in the Order for 
purchased Equipment, or during the term of the Equipment lease Order, as 
applicable, Subcontractor grants to Company and any subsequent purchaser or 
lessee of said Equipment a nonexclusive license to use said software on the 
Equipment on which it was delivered.  Company and any subsequent purchaser 
or lessee may copy the software for use on such Equipment with which it was 
originally delivered and for archival purposes, but shall not knowingly 
reproduce either the original software or make copies of the software for 
distribution to others.  Modifications or additions made to the software 
may invalidate the terms of the warranty and maintenance provisions of this 
subcontract.  Nonetheless, title to any such modification or addition to 
the software shall remain in the entity which creates the modification or 
addition only to the extent such modification or addition does not infringe 
on the software rights of the owner.

ORDER TERMINATION

An Order may be terminated only in the event the order is terminated by the 
Government for convenience or default or due to failure to resolve 
Government cure notices resulting from hardware or software or services 
problems.



<PAGE>


PLANT RULES AND GOVERNMENT CLEARANCE

All persons furnished by Subcontractor shall, while on the premises of 
Company, comply with all plant rules and regulations and, where required by 
Government regulations, submit satisfactory clearance from the United 
States Department of Defense and other federal authorities concerned.

RELEASES VOID

Neither Subcontractor nor Company shall require waivers or releases of any 
personal rights from representatives or customers of the other in 
connection with visits to its premises, and both parties agree that no such 
releases or waivers shall be pleaded by them or third persons in any action 
or proceeding.

SEVERABILITY

If any of the provisions of this Subcontract or an Order shall be invalid 
or unenforceable, such invalidity or unenforceability shall not invalidate 
or render unenforceable the entire Subcontract or Order, but rather the 
entire Subcontract or Order shall be construed as if not containing the 
particular invalid or unenforceable provision or provisions, and the rights 
and obligations of the parties shall be construed and enforced accordingly.

SHIPPING

Subcontractor shall, at its expense, (a) ship the Equipment, Software and 
Materials to the site designated in an Order by the date set forth in the 
Order in accordance with specific shipping instructions, (b) place the 
Order number on all subordinate documents, (c) enclose a packing memorandum 
with each shipment, and when more than one (1) package is shipped, identify 
the one containing the memorandum and (d) mark the Order number on all 
packages and shipping papers.  Adequate protective packing shall be 
furnished at no additional charge.

SUBCONTRACTOR'S INFORMATION

Except for information owned by Company under the clause DEVELOPED 
INFORMATION, no specifications, drawings, sketches, models, samples, tools, 
computer or other apparatus programs, technical or business information or 
data, written, oral or otherwise, furnished by Subcontractor to Company 
under this Subcontract or an Order or in contemplation of this Subcontract 
or an Order shall be considered by Subcontractor to be confidential or 
proprietary.  Unless such information is clearly marked with the terms in 
FAR Clause 52.227.14 for Data not first produced in the performance of this 



<PAGE>


subcontract.  Further, there are no limitations on Company's use of 
Software except as otherwise agreed to in the clause OPERATING SYSTEM 
SOFTWARE in this Article and in the clauses LICENSE GRANT and TITLE in 
Article IV; however, full title to and ownership of the Software shall 
remain in Subcontractor or Subcontractor's licensor, as applicable.

SURVIVAL OF OBLIGATIONS

Subcontractor's obligations under this Subcontract or an Order, which by 
their nature would continue beyond the termination, cancellation or 
expiration of this Subcontract or an Order, including, by way of 
illustration only and not limitation, those in the clauses COMPLIANCE WITH 
LAWS, IDENTIFICATION, IMPLEADER, INDEMNITY, INFRINGEMENT, INSURANCE, 
RELEASES VOID, USE OF INFORMATION and WARRANTY, shall survive termination, 
cancellation or expiration of this Subcontract or an Order.

TAXES

Company shall pay any state and local sales or use taxes which may be 
imposed upon the charges specified in an Order, unless an exemption 
certificate is furnished by Company to Subcontractor.  Such taxes shall be 
billed to Company as separate items.  Subcontractor shall assume and pay 
all other taxes.  If there is any question concerning an exemption 
certificate furnished by Company, Subcontractor shall advise Company 
thereof immediately.

TOOLS AND EQUIPMENT

Unless otherwise specifically provided in an Order, Subcontractor shall 
provide all labor, tools and equipment (the "tools") for performance of an 
Order.  Should Subcontractor actually use any tools owned or rented by 
Company, Subcontractor shall indemnify and hold harmless Company from and 
against any and all losses, damages, claims, demands, suits and liabilities 
(including reasonable attorneys' fees) of any kind and nature whatsoever 
(including but not limited to claims resulting from injuries or death to 
persons or damage to property) in any way arising out of or resulting from 
Subcontractor's maintenance, possession, operation, use, storage or 
movement of the tools or any accident in connection therewith.

Subcontractor further acknowledges that Subcontractor accepts the tools "as 
is, where is" and that Company has no responsibility for the condition or 
state of repair of the tools.  Subcontractor agrees not to remove the tools 
from Company's premises and to return the tools to Company upon completion 
of use, or at such earlier time as Company may request, in the same 
condition as when received by Subcontractor, reasonable wear and tear 



<PAGE>


excepted.  Such use shall be controlled by the clauses entitled INSURANCE 
and INDEMNITY.

USE OF INFORMATION

Any specifications, drawings, sketches, models, samples, tools, computer or 
other apparatus programs, technical or business information or data, 
written, oral or otherwise expressed, owned or controlled by Company 
("Information"), furnished to or acquired by Subcontractor under this 
Subcontract or an Order or in contemplation of this Subcontract or an 
Order, shall remain Company's property.  All copies of such Information in 
written, graphic or other tangible form shall be returned to Company at its 
request.  Unless such Information was previously known to Subcontractor 
free of any obligation to keep it confidential, or has been or is 
subsequently made public by Company or a third party, it shall be kept 
confidential by Subcontractor, shall be used only in the filling of Orders 
or performing under this Subcontract or Order and may not be used for other 
purposes except upon such terms as may be agreed upon between Subcontractor 
and Company in writing.

VARIATION OF QUANTITY

Unless otherwise specified in an Order, Company assumes no liability for 
merchandise produced, processed or shipped in excess of the amount 
specified in any Order placed with Subcontractor.

WORK DONE BY OTHERS

If any part of the Services or other work performed by Subcontractor is 
dependent upon work done by others, Subcontractor shall inspect and 
promptly report to Company any defect that renders such other work 
unsuitable for Subcontractor's proper performance.  Subcontractor's silence 
shall constitute approval of such other work as fit, proper and suitable 
for Subcontractor's performance of the Services or other work.


<PAGE>


                                   ARTICLE III


SALE

Subcontractor shall sell its Equipment and Materials to Company upon the 
terms and conditions set forth in this Subcontract and in Orders placed by 
Company pursuant to this Article.

RETURN OF EQUIPMENT

Whenever Equipment under warranty is shipped for repair or mechanical 
replacement purposes, Subcontractor shall bear all costs including, but not 
limited to, costs of packing, rigging, transportation and insurance.  
Subcontractor shall also bear all risk of loss or damage from the time the 
Equipment is removed from Company's site until the Equipment is returned to 
such site.

RETURN OF MATERIALS

Subcontractor shall accept for credit Materials returned under the 
following circumstances: (1) Subcontractor or Company error in the ordering 
or shipping process, providing the Materials are returned by Company to 
Subcontractor within ninety (90) days of receipt or (2) receipt of 
defective Materials or failure of Materials under the applicable warranty.  
Materials returned for credit must be in complete cartons and in good 
resalable condition, except where the Materials are defective or fail under 
the applicable warranty.

RISK OF LOSS

Subcontractor shall retain risk of loss and damage to the Equipment or 
Materials prior to the passage of title pursuant to the clause TITLE unless 
caused by the willful or negligent acts of Company or its employees.

SUBCONTRACTOR RIGHT TO SUBSTITUTE

The Subcontractor may offer to the Company substitute equipment provided 
that:

a. The functional and technical characteristics of the substitute 
equipment are equal or better than the equipment it is to replace;

b. The cost of the substitute equipment is equal to or less than the cost 
of the equipment it is to replace; and



<PAGE>


c. The Subcontractor provides sufficient detailed information to 
substantiate that a. and b. above are met.

The Company may, at its option, accept or reject the substitute equipment.



<PAGE>


                                   ARTICLE IV


LICENSE GRANT

Subcontractor hereby grants to Company a nonexclusive, nontransferable 
(except as set forth in this Subcontract) license to use the Software, 
including all media on which it may be recorded or stored.  The term 
"Software" means any computer software programs, firmware and documentation 
covered by the Order including the Basic Materials defined in the clause 
SOFTWARE AND PROGRAMMING AIDS and such other Basic Materials listed on the 
Order.  Throughout this Subcontract, the term "Software" is included in the 
term "material".  "Use" shall mean use by any individual having authorized 
access to the computer on which the Software is operated and shall include 
employees of Company, its agents, representatives or contractors.  Company 
shall not be required to obtain any agreement for use of any program or 
software derived from Software.

LICENSE FEE

The price set forth in the Order is the fee for the Software furnished and 
the license granted under the Order.

LICENSE TERM

The term of the Order shall be effective from the date of Company's 
acceptance of the Software and shall remain in effect until the use of the 
Software, as it may have been updated or enhanced by Subcontractor from 
time to time, is permanently discontinued by Company under the terms of the 
Order.

MODIFICATIONS

Company shall have the right to modify the Software.  Company shall have 
all right, title and interest in and to any such modifications.  However, 
any such modifications of Subcontractor's software may invalidate the terms 
of the warranty and maintenance provisions of this subcontract.

RELOCATION OF DESIGNATED SITE OR COMPUTER

If the Order specifies that Company's use of the Software is limited to a 
designated site or a designated computer, the provisions of this clause 
shall apply.  For purposes of this clause, the term "site" shall include 
the term "computer", as applicable to the Order.



<PAGE>


Company may redesignate the site at which the Software will be used, and 
shall notify Subcontractor of the new site and the effective date of the 
redesignation.  Concurrent operation of the Subcontractor's Software at a 
second site for a period not to exceed three (3) months for the purpose of 
redesignating the assigned using site shall not require an additional 
license.

The license granted under the Order for a designated site may be 
transferred: (a) to a backup site if the computer at the designated site is 
inoperative due to malfunction, to performance of preventive maintenance, 
to engineering changes or to changes in features or model, until such 
computer is restored to operative status and processing of the data already 
entered in the computer at the backup site has been completed or (b) to one 
other site for assembly or compilation of the Software if the 
specifications of the computer at the designated site are such that the 
Software cannot be assembled or compiled on such computer.

REMOTE ACCESS

Company shall have the right, at no additional charge, to have the Software 
used at any other location for Department of State (DOS) employees or their 
agents by means of remote electronic access.

RISK OF LOSS

If any Software is lost, damaged or made invalid during shipment, 
Subcontractor will promptly replace the Software and Software storage media 
at no additional charge to Company.  If any Software is lost or damaged 
while in the possession of Company, Subcontractor will promptly replace the 
Software at the established price.

SOFTWARE AND PROGRAMMING AIDS

On the delivery date, Subcontractor shall furnish to Company, at no 
additional charge, at least the following Basic Materials:

1. Object program (the fully compiled or assembled series of 
instructions, written in machine language, ready to be loaded into the 
computer, that guides the operation of the computer) stored in a 
medium compatible with the equipment described in the Order;

2. Program implementation and user instructions and required procedures;

3. The Software Specifications, as well as the required machine 
configuration;



<PAGE>


SOURCE PROGRAMS AND TECHNICAL DOCUMENTATION

In the event that Subcontractor, among other things, becomes insolvent, 
ceases to carry on business on a regular basis or fails to perform its 
obligations under the Order, and during a period of thirty (30) days 
thereafter Subcontractor (or some other financially and technically 
responsible successor in interest acceptable to Company which assumes in 
writing Subcontractor's obligations under the Order) does not continue to 
perform such obligations, then (a) Subcontractor, or others acting on 
behalf of Subcontractor, shall furnish to Company all source programs, 
technical documentation and other information ("Software Source Materials") 
required for maintenance, modification or correction of the most current 
version of the Software provided to Company and (b) Subcontractor will be 
deemed to have granted to Company a perpetual right to use the Software and 
the Software Source Materials under the terms and conditions of the Order.

SPECIFICATIONS

The term "Specifications" shall mean the specifications for the Software as 
set forth in the Order, or if not so set forth, shall mean Subcontractor's 
then current published specifications and user documentation for the 
Software.

SUBLICENSE BY COMPANY

Company may sublicense the Software.  A sublicensee shall be deemed to DOS.  
All obligations, undertakings and indemnifications by Subcontractor under 
an Order shall run and inure to the benefit and obligations of Company and 
the sublicensee.  No sublicense shall release Company from its obligations 
under an Order.

TITLE

Title to Software shall remain in Subcontractor or Subcontractor's 
licensor, as applicable.  Company shall have the right to make a reasonable 
number of copies of the Software for use as authorized in the Order.  
Company however, shall not knowingly reproduce copies of the Software for 
the purpose of supplying it to others.

WARRANTY

Subcontractor warrants to Company and its customers that the Software will 
be free from errors, will conform to and perform in accordance with the 
Specifications, and will function properly.  Subcontractor also warrants 



<PAGE>


that there are no copy protection or similar mechanisms within the Software 
which will, either now or in the future, interfere with the grants made in 
this Subcontract or an Order.  Subcontractor also warrants that the media 
containing the Software will be free from defects in material and 
workmanship and that services will be performed in a first-class, 
workmanlike manner.  Subcontractor further warrants that Company and its 
customers shall have quiet enjoyment of the Software and that, as to 
Software to which Subcontractor does not have title, Subcontractor has a 
license in the Software sufficient to permit the license of the Software to 
Company and its customers and has full right, power and authority to 
license the Software to Company and its customers as provided in this 
Subcontract.  Subcontractor also warrants that the Software will be 
compatible with and may be used in conjunction with other software as 
described in the Specifications.  Subcontractor also warrants that, if an 
Order states that the Software is to be used in conjunction with certain 
data processing equipment, the Software shall be compatible with that 
equipment.  If the Software, or any portion thereof, is or becomes 
unusable, totally, or in any respect, Subcontractor will correct errors, 
defects and restore the Software to error-free conforming condition without 
additional charge to Company or its customers.

Subcontractor also warrants that the Software does not contain any 
malicious code, program, or other internal component (e.g. computer virus, 
computer worm, computer time bomb, or similar component), which could 
damage, destroy, or alter software, firmware, or hardware or which could, 
in any manner, reveal, damage, destroy, or alter any data or other 
information accessed through or processed by the Software in any manner.  
Subcontractor shall immediately advise Company, in writing, upon reasonable 
suspicion or actual knowledge that the Software provided under this 
Subcontract or an Order may result in the harm described above.  
Subcontractor shall indemnify and hold Company and its customers harmless 
from any damage resulting from the harm described above.  Subcontractor's 
Maximum liability regardless of the form of action taken shall not in any 
event exceed the individual transaction charges paid under this 
Subcontract.

All warranties shall survive inspection, acceptance and payment.



<PAGE>


                                    ARTICLE V


MAINTENANCE SERVICES AGREEMENT

Subcontractor shall provide Maintenance Services (as defined in the clause 
MAINTENANCE SERVICES) upon the terms and conditions set forth in this 
Subcontract and in Orders placed by Company pursuant to this Article.  At 
any time, Company may terminate individual Orders for Maintenance Services, 
at no charge, provided at least thirty (30) days' prior written notice is 
given to Subcontractor.  If the charges for such terminated Order were paid 
annually in advance, Subcontractor shall promptly refund to Company the pro 
rata portion of said charges.

AUDIT

Subcontractor shall maintain complete, clear and accurate records of all 
hours and billable costs incurred under Per Call Service Orders.  Such 
records shall be maintained in accordance with recognized commercial 
accounting practices and in such a manner that they may be readily audited 
and shall be held until actual hours and billable costs have been finally 
determined before any payment or final adjustment of payment, as the case 
may be, has been made.  Subcontractor further shall permit Company or its 
representatives to examine and audit these records, including all records 
of a supporting nature, at all reasonable times.  Audits shall be made no 
later than one (1) calendar year after completion of the maintenance Order, 
and the correctness of the Subcontractor's billing shall be determined from 
the results of such audit.

ELIGIBILITY FOR MAINTENANCE SERVICES

Equipment shall automatically be eligible for Maintenance Services provided 
it shall have been under Maintenance Service or warranty by Subcontractor 
on the date of commencement of Maintenance Services.  Any new equipment 
integrated into the existing TMS system shall be inspected by Subcontractor 
at no charge to determine whether it is in good working order and can be 
maintained in such condition.  Subcontractor shall notify Company in 
writing as to the eligibility of such Equipment.  If the Equipment is not 
eligible, but can be made eligible, Company may, at its expense, make or 
have made such changes required to upgrade the Equipment to eligibility 
status.

ENGINEERING CHANGES

a. The Subcontractor is encouraged to propose, independently, engineering 
changes to equipment, software, or other contract requirements irrespective 



<PAGE>


of commercial announcement.  These changes may be proposed for reasons of 
immediate economy, or to improve performance, to save energy, personnel, or 
to meet increased data processing requirements, and so reduce projected 
life cycle costs.  After reviewing the Subcontractor's suggested changes, 
the government at its discretion may ask for a price proposal.  If the 
Company agrees to the technical and price proposals of the Subcontractor, 
changes shall be processed as modifications to the contract.

b. This clause applies only to those proposed changes initiated by the 
Subcontractor and identified as a proposal submitted pursuant to the 
provisions of this clause.  As a minimum, the following information shall 
be submitted by the Subcontractor with each proposal:

(1) A description, in detail, of the difference between the existing 
contracted for items and/or services and those proposed, and a specific 
analysis of the comparative advantages and disadvantages of each.

(2) Specific items or services contained in the Subcontract which must be 
changed if the proposal is adopted, e.g., if new equipment is offered to 
replace currently installed, will the old be exchanged for the new, and on 
what basis.

(3) A statement as to how the changes will affect performance, costs, 
etc., if adopted.

(4) An evaluation of the effects the change would have on Life Cycle Costs 
such as government furnished property, maintenance, personnel, site 
modification, energy, etc.

(5) An analysis of the time frame in which the change should be instituted 
so as to obtain maximum benefit to the government for the remainder of the 
contract.

c. The decision of the Company's Subcontract Manager as to the acceptance 
of any such proposal under this contract shall be final and not subject to 
the "Disputes" clause of this contract.

d. Acceptance of any engineering change proposal submitted pursuant to 
this clause shall be made by issuance of a written modification to this 
Subcontract.  Unless and until such a modification is issued to the 
Subcontractor, the Subcontractor remains obligated to perform in accordance 
with the terms of the existing subcontract.

e. If a change proposal submitted pursuant to this clause is accepted and 
applied to this contract, either the Subcontractor or the government shall 



<PAGE>


be entitled to an equitable adjustment in the subcontract price.  When the 
cost of performance of this subcontract is either increased or decreased as 
a result of the change, the equitable adjustment increasing or decreasing 
the contract price shall be in accordance with the "Changes" clause rather 
than under this clause but the resulting subcontract modification shall 
state that it is made pursuant to this clause.  In those cases when the 
entitlement to equitable adjustment is essentially equal between the 
parties there may be no set increase or decrease in the subcontract amount.

f. The Subcontractor is given the option of submitted its engineering 
change proposal as Value Engineering Change Proposal in accordance with FAR 
Clause 52.248.1, Value Engineering (MAR 1989) contained in this contract.  
In such case, that clause shall govern the transaction, including the 
information to be contained in such a proposal.

MAINTENANCE CHARGE CHANGES

Should Subcontractor's commercial rates for maintenance service comparable 
to the Maintenance Services be reduced during the term of the Order, the 
maintenance charges to Company shall be reduced accordingly.

MAINTENANCE CREDIT

If Equipment fails to operate as provided in its specifications, Company 
shall notify, either orally or in writing, Subcontractor of such 
inoperativeness or a work-around not provided.  If the Equipment remains 
inoperative, other than through the fault or negligence of Company, for a 
continuous period of twenty-four (24) hours or longer from the time of 
Company's notice, Company shall be entitled to credit against the 
maintenance charges computed as follows:

For each hour during which the Equipment is inoperative, the credit shall 
be one, two hundred-fortieth (1/240) of the monthly maintenance charges for 
the Equipment; provided, however, the credit shall in no event exceed one-
thirtieth (1/30) of the monthly maintenance charges for the Equipment for 
any calendar day nor the monthly maintenance charge for the Equipment for 
any month.  Company shall have the option of either (1) extending the term 
of the Order by applying such credit against the maintenance charges going 
beyond the term of the Order or (2) reducing the maintenance charges during 
the term of the Order.  Company shall, in addition, be entitled to a credit 
against the charges for the time any office systems equipment item, 
regardless of supplier, is rendered inoperative as a result of the 
inoperativeness of the Equipment.



<PAGE>


MAINTENANCE FACILITIES

Company shall provide Subcontractor with adequate storage space for spare 
parts and adequate working space, including heat, light, ventilation, 
electric current and outlets for use by Subcontractor's maintenance 
personnel.  These facilities shall be within reasonable distance of the 
Equipment to be serviced and shall be provided at no charge to 
Subcontractor.

Company shall not be responsible for any damage to Subcontractor's 
equipment or materials stored on Company's premises unless such damage is 
the result of Company's negligence.

MAINTENANCE SERVICES

Subcontractor shall recommend, but Company may designate, the type of 
Maintenance Services for each item of Equipment.

The types of Maintenance Services from which Company may choose are 
Preventive Maintenance Service, Remedial Maintenance Service, On-Site 
Dedicated Maintenance Service or Per Call Service, which are defined below.  
Subcontractor shall provide such Maintenance Services for the Equipment as 
is designated in an Order for the term as specified in such Order.  Cost of 
spare parts is included in the charge for Business Day Service, Around the 
Clock Service and On-Site Dedicated Maintenance Service type plans.  
Business Day Service is available during the hours from 8 a.m. to 5 p.m., 
Monday through Friday with the exception of Company's holidays.  Around The 
Clock Service is available twenty-four hours a day, seven (7) days a week 
including holidays.

Maintenance Services provided under the terms and conditions of this 
Subcontract may be limited to specific geographic areas and Subcontractor 
reserves the right to impose additional mutually agreed upon charges for 
travel outside Subcontractor's normal service areas.

Preventive Maintenance

Preventive Maintenance is defined as maintenance performed by Subcontractor 
which is designed to keep Equipment in good operating condition, and is to 
be performed on a scheduled basis.

Subcontractor shall propose to Company for Company's approval a Preventive 
Maintenance schedule which may be modified by mutual agreement.  Preventive 
Maintenance shall be performed in accordance with the manufacturer's 
written instructions at reasonable intervals.  An appropriate log shall be 



<PAGE>


maintained to reflect the date, time, location and nature of such 
Preventive Maintenance.  This log shall also include the signature of an 
appropriate Company representative for each Preventive Maintenance call.  
Subcontractor shall furnish at Company's request the log of Preventive 
Maintenance calls to be used mutually between Subcontractor and Company for 
the review of suitability of Preventive Maintenance services.  Preventive 
Maintenance shall be performed by a technician other than the resident 
technician unless otherwise determined by Company.

The log of Preventive Maintenance shall be maintained by Subcontractor and 
be made available to Company, at its request, for a period of not less than 
two (2) years after the termination or expiration of the Maintenance Order.

Remedial Maintenance

Remedial Maintenance is defined as those functions required to repair a 
malfunctioning piece of Equipment and return it to good operating 
condition.

When Remedial Maintenance is performed, Subcontractor shall furnish Company 
a log indicating what Equipment failed and what corrective action was taken 
to repair such Equipment.  Company's representative shall sign such log 
indicating acceptance of the Services performed and shall be furnished a 
copy by Subcontractor of the signed log.  This log shall serve as the basis 
for discussion of Subcontractor's performance under the Maintenance Order.  
This log shall also indicate the time the Equipment was returned as 
operational and accepted by Company.

Remedial Maintenance shall be performed by a technician other than the 
resident technician unless otherwise determined by Company.

Subcontractor shall provide on-site response time not to exceed two (2) 
hours after receipt by Subcontractor of a malfunction notice, either oral 
or written.

Per Call Service

Per Call Service is defined as maintenance services provided outside 
contracted Maintenance Services, including holidays, and performed on a 
time and materials basis at Subcontractor's then current rates.

TECHNICAL INFORMATION, SOFTWARE AND PROGRAMMING AIDS

Subcontractor shall furnish to Company on the agreed-upon delivery date any 
technical information, programs, routines, subroutines, documentation, or 



<PAGE>


related material it has or may develop or modify, necessary for the general 
use or maintenance of Equipment under Maintenance Service, which are 
normally furnished to maintenance customers without additional charge.

TRAINING AND ASSISTANCE

Subcontractor shall provide, without additional charge to Company, such 
training and assistance as it normally provides without charge to 
maintenance customers.

WARRANTY

Subcontractor warrants to Company that replacement and repair parts and 
components furnished under an Order shall be free from defects in design 
(except to the extent designed by Company), material and workmanship and 
shall conform to and perform in accordance with the specifications.  
Subcontractor also warrants to Company that such parts and components shall 
function properly for a period of ninety (90) days unless the Company 
purchases an extended warranty.  Maintenance services shall be performed in 
a first class, workmanlike manner and that the equipment shall function in 
a good operating condition during the terms of the Maintenance Order.  In 
warranties, Subcontractor hereby assigns such warranties to Company.  All 
warranties shall survive inspection, acceptance and payment.

Whenever Equipment, repair parts or components under warranty are shipped 
for repair or mechanical replacement purposes, Subcontractor shall bear all 
costs, including but not limited to, costs of packing, rigging, 
transportation and insurance.  Subcontractor shall also bear all risk of 
loss or damage from the time the Equipment, repair parts or components are 
removed from Company's site until the Equipment is returned to such site.

(Attachment 1-A is confidential and omitted and filed separately with the 
Commission)



<PAGE>

                                                                 EXHIBIT 10.4

                       AUTHORIZED DISTRIBUTOR AGREEMENT
                 AMERICAN COMPUTER AND ELECTRONICS CORPORATION

1.  APPOINTMENT

    American Computer and Electronics Corporation, A Maryland Corporation 
    (Hereinafter referred to as "the Company"), located in Gaithersburg, 
    Maryland 20877, hereby appoints AmerInd, Inc., (hereinafter referred to as 
    "the Distributor") as an Authorized Distributor for the sale of the Products
    specified in Appendix A, attached hereto and incorporated by reference into 
    this Agreement.  The geographical area and/or target market(s) in which the 
    distributor is measured in fulfilling distributor's responsibilities 
    specified herein is specified in Appendix B.

2.  TERM

    The initial term of this Agreement and the distributorship, hereby created 
    shall be from May 1, 1991 to December 31, 1996, unless sooner terminated as 
    hereinafter provided.  The Agreement and any renewal thereof may be extended
    for an additional one year term by mutual written agreement between parties.

3.  COMPANY - DISTRIBUTORSHIP RELATIONSHIP

    The distributorship is exclusive and non-assignable by the Distributor 
    without the written consent of the Company.  The relationship between the 
    Company and the Distributor shall be that of Seller and Buyer.  The 
    Distributor, and its officers, agents and employees shall under no 
    circumstances be considered to be agents or representatives of the Company, 
    and except as the Company may specifically authorize in writing by the 
    Company, the Company, the Distributor shall have no right to enter into any 
    contracts or commitments in the name or on behalf of the Company or to bind 
    the Company in any respect whatsoever.  The Distributor will not represent 
    any Company or product that directly competes with the Company's products. 

4.  COMPANY'S RESPONSIBILITIES

    The Company agrees that so long as that distributorship is in effect it 
    will, subject to and in accordance with the terms and conditions herein 
    expressed:

    (a)  Sell the Products covered by this Agreement to the Distributor for 
         its resale or lease.


<PAGE>


    (b)  Furnish to the Distributor sales promotional aids.

    (c)  Furnish to the Distributor sales support through its Headquarters 
         and Field Sales organizations.

    (d)  Keep the Distributor regularly advised of changes in published 
         specifications and design of the Products.

    (e)  Indicate to the public that the Distributor is an Authorized 
         Distributor of the Products listed in Appendix A.

    (f)  Provide the product sales and service training and assistance in 
         sales planning for the Distributor.

    (g)  Provide for product service to the ultimate user of the Product in 
         accordance with the terms of the Company's standard contract for 
         maintenance service.

5.  DISTRIBUTORS RESPONSIBILITIES

    The Distributor agrees that it will, subject to the provisions of this 
    Agreement and so long as this distributorship is in effect:

    (a)  Will make every reasonable effort to develop business and to promote 
         the sale and/or lease of and to sell or lease the Products covered 
         by this Agreement.

    (b)  Maintain a sales organization which actively solicits the sale 
         and/or lease of Products covered by this Agreement.

    (c)  Support the Company's sales promotion as requested by taking 
         mutually agreed upon action in communicating and carrying out 
         advertising the promotional programs which the Company may make 
         available.

    (d)  Include a representative listing of the Products covered by this 
         Agreement in any catalog issued by the Distributor.

    (e)  Have its sales personnel attend product sales and service training 
         courses offered by the Company from time to time.

    (f)  Provide product support and service to its customers as more 
         particularly provided for in paragraph 27.


                                      -2-


<PAGE>


    (g)  Furnish Products, technical information and other related sales 
         assistance to potential customers who are referred to the 
         Distributor by the Company for handling.

6.  PRICES

    (a)  The Products to be purchased and sold during the initial term and 
         succeeding terms of this Agreement shall be those set forth in 
         Appendix A.  Company agrees to sell and the Distributor agrees to 
         buy such Products in accordance with the prices set forth in 
         Appendix A, subject to written acceptance by the Company which may 
         accept or reject any order.  Such acceptance shall not be 
         unreasonably withheld.

    (b)  The Company reserves the right to increase prices upon sixty (60) 
         days prior written notice to the Distributor. Such changes in pries 
         shall be subject to the price protection provisions set forth in 
         paragraph 8.7.

7.  PRICE PROTECTION

    In the event the Company changes its prices on any Products, the Distributor
    shall be offered price protection as herein specified.

    (a)  Price Increase

    In the event of a price increase, the Company shall be bound to honor any 
    order(s) at prior prices accepted prior to the effective date of the 
    price increase.

    (b)  Price Decrease

    In the event of a price reduction, orders of Products affected by the price 
    reduction shall be adjusted to reflect the price decrease. Products in 
    transit prior to the effective date of the price reduction shall be 
    subject to the price reduction provided, however, that the Distributor 
    applies for the price reduction within (30) days after the effective date 
    of the announced price reduction.

    (c)  Notwithstanding anything to the contrary set forth in this paragraph 
         7, the Company agrees to negotiate in good faith with the 
         Distributor in order to provide price protection to the Distributor 
         for its outstanding quotes identified in writing to the Company 
         within thirty (30) days from the date the Company notifies the 
         Distributor of a change in its prices.

8.  DELIVERY

    Delivery of the Products purchased by the Distributor shall be made by the 
    Company F.O.B. point of shipment (freight collect) and fide thereto shall 
    pass to 


                                      -3-


<PAGE>


    Distributor once such Products are delivered to the carrier. Risk of loss 
    or damage shall pass to the Distributor upon delivery of the Products to 
    the carrier.

9.  EXCUSABLE DELAYS

    Shipping dates given prior to shipment are approximate and are based upon 
    prompt receipt of all necessary information. Company shall not be liable 
    for failure to meet such dates nor for delays in delivery due to causes 
    beyond its reasonable control or acts of God,, acts of Distributor, acts 
    of civil, governmental or military authority, priorities fires, strikes, 
    or other labor disturbances, floods, epidemics, wars, riots, delays in 
    transportation or car shortages, or inability on account of causes beyond 
    its reasonable control to obtain necessary labor, materials. components 
    or manufacturing facilities.  In the event of any such delays the date of 
    delivery or of performance shall be extended for a period equal to the 
    time lost by reason of the delay.

10. PRODUCT CHANGE AND DISCONTINUANCE OF PRODUCTS

    (a)  The Company shall have the right, at its absolute discretion, and 
         without thereby incurring any liability to the Distributor with 
         respect to any purchase order theretofore placed, or otherwise, to 
         change the design or to discontinue the manufacture or sale of any 
         Products covered by this Agreement.

    (b)  The Company shall endeavor to notify the Distributor at lease ninety 
         (90) days prior to the delivery of any Products which incorporate a 
         change in design that shall, in the Company's reasonable opinion 
         affect the marketability of any Product  The  Company shall also 
         endeavor to notify the Distributor at lease ninety (90) days prior 
         to the discontinuance of manufacture or sale of any Products covered 
         by this Agreement.  The Company, however, shall not incur any 
         liability to the Distributor for its failure to so notify the 
         Distributor.

11. PAYMENTS AND FINANCIAL CONDITION

    (a)  Terms of payment shall be in U.S. dollars, either within sixty (60) 
         days from date of invoice or five (5) days from Distributor's 
         receipt of payment by the customer, whichever occurs first.  If 
         invoices are not paid when due, the Distributor agrees to pay "Late 
         Charges" on the unpaid delinquent balance at an interest rate not to 
         exceed 1 1/2% per month.

    (b)  In the event that the Company offers discounts for early payment to 
         the Distributor, the Distributor agrees to extend the same payment 
         terms to the customer.  Such discounts shall apply to the 
         Distributor's entire price of 


                                      -4-


<PAGE>


         the items on which the Company offers a payment discount.  These 
         discounts must be mutually agreed upon discounts.

    (c)  If Distributor's financial condition at any time does not jusfify 
         continuance of the work to be performed by any hereunder on the 
         agreed terms of payment, Company may require partial payment in 
         advance.  Any order for Products by Distributors all constitute a 
         representation that Distributor is solvent.  In the event of 
         Distributor's bankruptcy or insolvency or in the event any 
         proceeding is brought against Distributor, voluntarily or 
         involuntarily, under the bankruptcy or any insolvency laws, Company 
         shall be entitled to cancel any order than outstanding at any time 
         during the period allowed for filing claims against the estate and 
         shall receive reimbursement for its proper cancellation charges.  
         Company rights under this provision are in addition to all rights 
         available to it at law or in equity.  Company specifically reserves 
         the right to establish credit rotation based upon Distributor's 
         financial condition, and to delay manufacture or shipment of 
         specific purchase orders based upon these limitations.

12. TAXES

    The Company's prices do not include sales, use, excise or similar taxes.  
    Consequently, in addition to the Companies prices in effect at the time 
    of sale, the Distributor shall pay or reimburse the Company of, the gross 
    amount of any present or future sales, use, excise or similar tax 
    applicable to the price, sale or furnishing of any services or Products 
    hereunder, or their use by the Company or the Distributor, or in lieu 
    thereof the Distributor shall provide the Company with a tax exemption 
    certificate acceptable to the taxing authorities.

13. PRODUCT SALE TRAINING

    (a)  The Company shall provide a limited quantity of tuition free product 
         related sales training courses.  The time and location shall be 
         announced by the Company.  The Distributor shall be responsible for 
         travel and living expenses of its personnel attending such courses.

    (b)  Training courses shall be structured to instruct sales personnel of the
         product(s) configuration and operation, product(s) options/accessories 
         and operation, competitive features, benefits, selling tips, etc.  A 
         limited quantity of printer material and sales aids associated with 
         such training shall be provided at no charge by the Company.

14. SALES SUPPORT LITERATURE


                                      -5-


<PAGE>


    (a)  The Company shall provide at no charge to the Distributor, up to a 
         maximum o 5000/year, its standard sales promotional literature, such 
         as brochures, specification sheets and application sheets.

    (b)  Standard sales promotional literature excess of the maximum set 
         forth in (a) above required by the Distributor and/or sales 
         promotional literature customized for the Distributor shall be paid 
         for by the Distributor.

15. MAINTENANCE TRAINING AND DOCUMENTATION

    (a)  Maintenance Training

         (1)  Training courses at published tuition rates are held 
              periodically throughout the year at the Company's training 
              facility.  The training course is structured to teach the 
              serviceman to perform mechanical adjustment and parts 
              replacement.  Electronic theory is taught to the functional 
              block diagram level necessary to identify and swap a 
              replacement board.

         (2)  When requested by the Distributor, within the first six months 
              of this Agreement, or within six months from the introduction 
              date of any new product(s) purchased by the Distributor, the 
              Company shall provide such training, tuition free, for up to 
              five (5) of the Distributor's employees per year.  The 
              Distributor shall be responsible for travel and living expenses 
              of its employees attending such courses.

    (b)  Maintenance Documentation

         When requested by the Distributor, during the initial term of this 
         Agreement, or within six months from the introduction date of any 
         new product(s) purchased by the Distributor, the Company shall 
         provide at no charge up to five (5) service manuals.  Update service 
         shall be provided at no charge during the initial term of the 
         Agreement and any renewal(s) thereof.

16. SPECIAL PROMOTIONS/SALE

    The Company may decide, from time to time, in its sole discretion, to 
    offer special prices to the Distributor in conjunction with the purchase 
    by the Distributor of demonstration Products, or with the introduction of 
    new products, options or accessories, or for any other reason, in order 
    to promote sales to the public.  In the event such special 
    promotions/sales are offered by the Company, the Distributor may accept 
    such offerings in accordance with the special terms and conditions 
    associated with said special promotions/sales.


                                      -6-


<PAGE>


17. CUSTOMIZED PRODUCTS

    The Company may agree, it its sole discretion, if requested by the 
    Distributor, to furnish products or parts manufactured to an individual 
    customer's or to the Distributes specification to design.  The prices and 
    the terms and conditions of such customized products shall be negotiated 
    between the Company and the Distributor.  All sales of such customized 
    products shall be made with the understanding that the inventory 
    adjustment and repurchase provisions as set forth in paragraph 12 and 33 
    shall not apply.

18. BUSINESS PLAN/REVIEW

    (a)  The parties recognize that, if this Agreement is not commercially 
         successful, either or both of the parties may wish to terminate the 
         Agreement or may not wish to extend the Agreement for additional one 
         year term(s).  In order to measure whether this Agreement is 
         commercially successful, the Distributor and the Company agree to 
         prepare a yearly business plan for Distributor which shall be 
         attached to and shall become a pan of this Agreement.  The business 
         plan shall set forth mutually acceptable Product and dollar quotas 
         by quarter.  The business plan may also include other elements 
         including, without limitation, sales/service training and promotion 
         schedules and demonstration equipment requirements.

    (b)  The parties agree to meet at least once during each calendar quarter 
         to review Distributor's progress under the business plan and, if 
         necessary, to develop plans for improvements in performance required 
         to realize the objectives of the business plan.

    (c)  The Company will measure the effectiveness of Distributor's 
         performance under this Agreement against the objectives set forth in 
         the business plan.  If Distributor fails to meet all of the 
         quarterly Product (s) quotas set forth in the business plan for two 
         successive quarters, the Company shall have the right to terminate 
         this Agreement with respect to the Product(s) involved or to 
         terminate this Agreement it its entirety pursuant to paragraph 32 a 
         (5).

19. WARRANTY

    (a)  Company warrants that Products and any services furnished hereunder 
         will be free from defects in material and workmanship and will be of 
         the kind of quality specified in Company's published warranty for 
         that Product.


                                      -7-


<PAGE>


    (b)  The Distributor agrees to maintain a record of all of its sales by 
         product type for a period of three (3) years in order to assist the 
         Company in the administration of the warranty and any voluntary or 
         mandatory field retrofit which mat be required during such time 
         period.

20. PRODUCT SUPPORT AND SERVICE

    The parties recognize that users of the Products to be sold by the 
    Distributor under this Agreement shall require, in a timely fashion, 
    product support and service, such as installation of the Products, and 
    add-on options, as well as replacement parts, repair and maintenance 
    service.  In recognition of such product support and service 
    requirements, the Distributor agrees to either:

    (a)  maintain an adequate inventory of replacement parts, provide 
         installation, repair and maintenance service under the provisions of 
         the Authorized Warranty Service Center Agreement, or

    (b)  advise the customer that the Distributor is not furnishing such 
         services, and that such services are available from the Company.  
         `Me  Company  shall provide the Distributor with a "Product Support 
         and Service Procedure" to be used in the event this election (b) is 
         applicable.

21. PATENTS

    (a)  The Company shall defend any suit or proceeding brought against the 
         Distributor or a subsequent purchaser so far as based on a claim 
         that any Product or any part thereof furnished under this Agreement 
         constitutes an infringement of any patent of the United States, if 
         notified promptly in writing and given authority, information and 
         assistance (at the Company's expense) for the defense of same, and 
         the Company shall pay all damages and costs awarded therein against 
         the Distributor.  In case any Product or any part thereof is in such 
         suit held to constitute infringement and shall at its own expense 
         either procure for the Distributor or the subsequent purchaser the 
         right to continue using said Product, or part, or replace same with 
         a noninfringing, Product, or part, or modify it so it becomes 
         no-infringing, or refund the purchase price, less reasonable 
         depreciation thereof The foregoing states the entire liability of 
         the Company for patent infringement by any such Product or any part 
         thereof.

    (b)  The preceding paragraph shall not apply to any product or part 
         specified by the Distributor or manufactured to the Distributor's 
         design, or to the use of any product furnished hereunder in 
         conjunction with any other product in a combination not furnished by 
         the Company as a part of this transaction.  As to any such product, 
         part, or use in such combination, the Company assumes no liability 
         whatsoever for patent infringement and the 


                                      -8-


<PAGE>


         Distributor will hold the Company harmless against any infringement 
         claims arising therefrom.

22. TRADEMARKS

    (a)  The Distributor shall not use directly or indirectly, in whole or in 
         part, the Company's signature, or any other trademark or name that 
         is now or may hereafter be owned by the Company, as part of the 
         Distributor's corporate or business name, or in any way in 
         connection with the Distributors business except in the manner, and 
         to the extent that the Company may specifically consent to in 
         writing.  If any such trademarks or names are issued in any way by 
         the Distributor's business except in the manner, and to the extent 
         that the Company may specifically consent to in writing.  If any 
         such trademarks or names are used in any way by the Distributor with 
         the express written approval of the company, the Distributor, upon 
         the termination of this Agreement, shall delete and discontinue all 
         such use and shall not thereafter use any name, title or expression 
         in connection with any business in which the Distributor may 
         thereafter be engaged which, in the judgment of the Company, so 
         nearly resembles any trademark of name, or part thereof, owned by 
         the Company as may be likely to lead to confusion or uncertainty on 
         the part of the public.

    (b)  The proper use of the Company's trademarks is described in the 
         Company's published trademark procedure.

23. DISCLOSURE OF INFORMATION

    Any information, suggestions or ideas transmitted by on party to the 
    other in connection with the performance of this Agreement are not 
    to be regarded as secret or submitted in confidence except as may be 
    otherwise provided in a writing signed by the duly authorized 
    representatives of the parties.

24. LIMITATION OF LIABILITY

    (a)  In no event, whether as a result of breach of contract, warranty or 
         tort, shall Company be liable for any consequential or incidental 
         damages including, but not limited to loss or profit or revenues, 
         loss of use of the product or any capital, cost of substitute 
         products, facilities, service or replacement power, down time costs, 
         or claims of Distributor's customers for such damages.

    (b)  Except as provided in the paragraph entitles "Patents", the 
         Company's liability on any claim of any kind for any loss or damage 
         arising out of, or resulting from this Agreement, or from its 
         performance or breach, or from 


                                      -9-


<PAGE>


         the products or services furnished hereunder, shall in no case 
         exceed the price of the specific product or service which gives rise 
         to the claim.  Except as to title, any such liability shall 
         terminate upon expiration of the warranty period provided for herein.

25. TERMINATION

    (a)  This Agreement may be terminated:

         (1)  by either party at will, with or without cause, upon not less 
              than sixty (60) days written notice of the other party.

         (2)  by either party upon one day written notice in the event that 
              either party ceases to function as a going concern or to 
              conduct its operations in the normal course of business, has a 
              receiver appointed for it or an application made of appointment 
              of such a receiver, files or has filed against it a petition 
              under the Federal Bankruptcy Code, or makes an assignment of 
              the benefit of its creditors.

         (3)  by the Company upon one day written notice in the event that 
              the Distributor attempts to assign this Agreement or any rights 
              hereunder without the Company's written consent.

         (4)  by the Company upon ten (10) days written notice in the event 
              that Distributor fails to make any payment to the Company when 
              due under the terms of this Agreement.

         (5)  by either party in the event of a material breach of this 
              Agreement by the other party which is not remedied within ten 
              (10) days after written notice of such breach is given by the 
              non-breaching party to the other party.

    (b)  All orders in effect on the date of termination of this Agreement 
         shall be automatically canceled as of such date.

    (c)  In the event that this Agreement is terminated in accordance with 
         subparagraphs (a) (1), (a) (4) or (a) (5) above, the Company will 
         accept orders from Distributor priced in accordance with Distributor 
         pricing m effect at the time of order on C.O.D. terms for additional 
         Product(s) which Distributor is contractually obligated to furnish 
         to its customers as of the termination date; provided, however, that 
         Distributor must provide the Company with written notice of such 
         obligations on or before the 10th day following the termination date.


                                     -10-


<PAGE>


26. NO LIABILITY TERMINATION

    Neither the Company nor the Distributor shall, by reason of the deletion 
    of any product or the termination or non-renewal of the Distributors 
    distributorship of said products, be liable to the other for 
    compensation, reimbursement or damages on account of, the loss or 
    prospective profits on anticipated sales, or on account of expenditures, 
    investments, leases or commitments in connection with the business of 
    goodwill of the Company of the Distributor or otherwise.

27. NOTICE

    Any notice or demand which under the terms of this Agreement must or may 
    be made shall in be writing and shall be given or made by telegram or 
    similar communication or by certified or registered mail addressed to the 
    respective parties as follows:

    the Distributor: Deloris Assahna
                     ---------------------------------------------------------
                     Contracts Administrator
                     ---------------------------------------------------------
                     Amerind, Inc.
                     ---------------------------------------------------------
                     1310 Braddock Place
                     ---------------------------------------------------------
                     Alexandria, Virginia 22314
                     ---------------------------------------------------------
    The Company:     Vice President - TMS Division
                     American Computer and Electronics Corporation
                     Gaithersburg, Maryland 20977

    Such notice or demand shall be deemed to have been given or made when 
    sent in the use of telegram or other similar communication or when 
    deposited, postage prepaid in the U.S. Mail.

    The above addresses may be changed at any time by giving written notice 
    as provided above.

28. FAILURE TO ENFORCE

    The failure to either party to enforce at any time or for any period of 
    time the provisions hereof shall not be construed to the a waiver of such 
    provisions or of the right of such party thereafter to enforce each and 
    every such provision.


                                     -11-


<PAGE>

29. GOVERNING LAW

    The Agreement and any extension, modification, renewal, change or 
    amendment hereto shall be governed by the laws of the Commonwealth of 
    Maryland.

30. EXECUTION AND MODIFICATION

    This instrument contains the entire and only agreement the parties 
    respecting the sale to and the purchase and distribution by the 
    Distributor of the Products listed in Appendix A and any representation, 
    promise or condition in connection therewith not incorporated herein 
    shall not be binding upon either party.  This instrument supersedes all 
    pre-existing agreements or arrangements between the parties relating to 
    the purchase, sale or distribution by the Distributor of the Products.  
    This instrument shall not be effective or binding upon either party until 
    signed by authorized representative of both parties, not shall any 
    change, modification extension, renewal, ratification , rescission, 
    discharge, waiver, or termination of this Agreement or of any of the 
    provisions herein contained, be binding upon either party until made in 
    writing and signed by authorized representatives of parties.

IN WITNESS THEREOF, the parties have executed this Agreement by their duly 
authorized representatives.


AMERICAN COMPUTER AND
ELECTRONICS CORPORATION                     DISTRIBUTOR  AmerInd, Inc.
                                                         ----------------------

BY: /s/ S. Joseph Dorr                      BY: /s/
   -------------------------------              ------------------------------

TITLE: Vice President                       TITLE: Executive Vice President
       ---------------------------                 ----------------------------

DATE: July 16, 1991                         DATE: July 23, 1991
      ----------------------------                -----------------------------


                                     -12-


<PAGE>


                                                                    Exhibit 10.5

                                    CONTRACT



                                     BETWEEN



                              TELEGLOBE CANADA INC.



                                       AND



                  AMERICAN COMPUTER AND ELECTRONICS CORPORATION

















                                                      Re: RETR Project
                                                          (Network Traffic Data)

                                                      Contract No.: A6748
<PAGE>


CONTRACT NO.: A6748


CONTRACT ENTERED INTO BETWEEN:


         TELEGLOBE CANADA INC., a Canada business corporation having its 
         registered office at 1000 de La Gauchetiere Street West, Montreal, 
         Quebec, H3B 4X5, hereinafter called "TELEGLOBE",


AND:

         AMERICAN COMPUTER AND ELECTRONICS CORPORATION, a corporation
         having a place of business at 209 Perry Parkway, Gaithersburg, 
         Maryland, U.S.A. 20877, hereinafter called the "Supplier",

THE PARTIES AGREE EACH WITH THE OTHER AS FOLLOWS:

SPECIFIC TERMS AND CONDITIONS

1.   OBJECT OF THE CONTRACT

     1.1  The Supplier shall develop, supply, deliver and install the software 
          and the equipment as required in the specification no. 93-375, Last 
          Revision dated August 10, 1994, attached hereto as Annex 2.

     1.2  The object of this contract shall also include the provision of all 
          other materials and the carrying out of all other things required to 
          be done, furnished and performed to fully execute same as per high 
          trade standards.

2.   DELIVERY AND INSTALLATION

     2.1  The Supplier shall be responsible for making all arrangements and for
          all costs associated with delivery of the software and the equipment, 
          including as applicable, the packaging, loading, shipping, unloading 
          and insurance to the location where the software and the equipment is 
          to be delivered and installed hereunder, which shall be:

                  Teleglobe Canada Inc.
                  Toronto International Center
                  825 Milner Avenue
                  Scarborough, Ontario Ml B 3C3



<PAGE>


                  Teleglobe Canada Inc.
                  3033 Beta Avenue
                  Burnaby, British Columbia
                  V5G 4M9

                  Te.leglobe Canada Inc.
                  625 Belmont Street
                  Montreal, Quebec
                  H3B 3Cl

                  Teleglobe Canada Inc.
                  1441 Carrie-Derrick
                  Montreal, Quebec
                  H3C 4S9

          hereinafter called "the site" or "the sites".

     2.2  The Supplier shall also arrange for and be responsible for the cost of
          installation of the software and the equipment and of all services 
          auxiliary or related to the carrying out of this contract at the site,
          including without limitation, elevator usage, water, temporary power 
          and hoisting.

3.   CONTRACT PRICE

     3.1  In consideration of proper performance of this contract, payment of 
          the contract price in the amount of (confidential material has been 
          omitted and filed separately with the Commission.), in Canadian
          currency shall be made by TELEGLOBE to the Supplier, as per the
          schedule of payments contained in clause 4 hereof, and in accordance
          with all other conditions of payment herein.

     3.2  The contract price includes all delivery and installation charges, 
          insurance cost and any taxes and charge which may apply at the site of
          manufacturing in the country of origin and import duties but excludes 
          GST and provincial sales taxes which may be applicable to the software
          and equipment (as that term is defined in clause 1.6 of Annex 1) and 
          services provided by the Supplier under the terms of the contract, 
          which shall be reimbursed by TELEGLOBE to the Supplier upon proof of 
          payment. In the event of changes in the form or applicability of 
          duties and/or sales taxes, the contract price will be adjusted 
          accordingly.

4.   PERFORMANCE OF WORK AND PROGRESS PAYMENTS

     4.1  Time is of the essence of this contract. The Supplier shall 
          accordingly achieve and maintain a rate of progress which will ensure 
          a timely 



                                       2
<PAGE>


          performance of this contract in accordance with the following table 
          showing the sequence of events and dates by which such events must be 
          completed, as well as the associated progress payments payable to the 
          Supplier.

<TABLE>
<CAPTION>
               MILESTONE                      DATE                    PAYMENT
                                                                  (PERCENTAGE OF
                                                                     CONTRACT 
                                                                      PRICE)

          <S>                           <C>                       <C>
          Architecture Approval         August 19, 1994                 10%
                                       
          Functional Design Approval    1st Phase - Oct. 14, 1994        5% 
                                        2nd Phase - Nov. 18, 1994        5% 
                                       
          Complete Development          1st Phase - Nov. 25, 1994       15%
                                        2nd Phase - Feb. 24, 1995        5% 
                                       
          HARDWARE DELIVERY            
                                       
          (a) DCMS                      October 15, 1994                 5%
                                       
          (b) Stratus                   October 15, 1994                 5%
                                       
          (c) Hewlett Packard           November 15, 1994               10%
                                       
          Completion of delivery for    December 1st, 1994              ---
          Phase 1                      
                                       
          Provisional Acceptance        December 16, 1994               10%
                                       
          Completion of delivery for    March 31, 1995                  ---
          Phase 2                      
                                       
          Final Acceptance              April 21, 1995                  20%
                                       
          Release of Holdback           May, 1996                       10%
</TABLE>


5.   NOTICES AND ELECTED DOMICILE

All notices pertaining to this contract shall be in writing and shall be sent 
to the respective following postal addresses or facsimile numbers:

5.1  For TELEGLOBE:

     Teleglobe Canada Inc.
     1000 de La Gauchetiere Street West
     Montreal, Quebec
     H3B 4X5



                                       3
<PAGE>


     Contract contact:   Mrs. Brigitte Aube, Contacts Administration
     Facsimile:          (514) 868-8043

     Technical contact:  Mr. Martin Demers
     Facsimile:          (514) 868-7834

5.2  For the Supplier:

     American Computer and Electronics Corporation
     209 Perry Parkway
     Gaithersburg, Maryland  20877
     U.S.A.

     Contract contact:   Mr. Thomas V. Russotto
     Technical contact:  Mr. W.T. Lamoreaux 
     Facsimile:          (301) 921-0434

6.   EFFECTIVE DATE

     The effective date of this contract is July 20, 1994.

7.   APPLICABLE LAW AND LANGUAGES

     This contract shall be governed and interpreted in accordance with the laws
     in force in the Province of Quebec and the laws of Canada application 
     therein.  The parties have agreed that this contract shall be written in 
     the English language only.  Les parties ont convenu de rediger ce contrat 
     en langue anglaise seulement.

8.   ARBITRATION

     Any difference, controversy or claim arising out of or relating to the 
     contract, its interpretation or performance, shall be considered a Dispute.
     Any Dispute shall be subject to binding arbitration as provided hereafter.

     8.1  The Dispute shall diligently be notified by the aggrieved party to the
          other party. The notification shall be deemed diligently made if 
          communicated to the other party within five (5) business days of the 
          knowledge of the occurrence.

     8.2  Within (5) business days following such notification, each party shall
          prepare and disclose to the other party a brief on its position and 
          within ten (10) days thereafter the parties shall prepare a common 
          brief which shall contain all points of agreement and all points of 
          disagreement in relation to the Dispute.



                                       4
<PAGE>


     8.3  Each party shall then within five (5) days of completing the common 
          brief, submit the Dispute and the common brief to their respective 
          Chief Executives with recommendation that the Chief Executives 
          communicate with each other within a reasonable period with a view to 
          resolving the Dispute.

     8.4  Notwithstanding clause 8.3 above, if no resolution of the Dispute has 
          occurred after 90 days after the date on which a party has submitted 
          the Dispute to his Chief Executive, then the Dispute shall be 
          submitted for resolution by binding arbitration under the 
          International Chamber of Commerce Rules of Conciliation and 
          Arbitration in effect on the date the arbitration is submitted to the
          tribunal of arbitration. In such event:

          8.4.1  a sole arbitrator shall be appointed in accordance of said 
                 Rules, unless the parties agree in a particular case within 
                 thirty days of the submission of the Dispute for resolution by 
                 binding arbitration that the tribunal should consist of more 
                 than one arbitrator. Such arbitrator(s) shall be knowledgeable 
                 in the field of law involved;

          8.4.2  the place of arbitration shall be Quebec, Province of Quebec, 
                 Canada and the arbitration shall be conducted in the English 
                 language;

          8.4.3  responsibility for paying the costs of the arbitration, 
                 including the costs incurred by the parties themselves in 
                 preparing and presenting their cases, shall be apportioned by 
                 the tribunal of arbitration;

          8.4.4  the award shall be rendered in the English language and shall 
                 state the reasons upon which it is based;

          8.4.5  the award shall be final and binding on the parties as from the
                 date of it is made;

          8.4.6  the award of the tribunal of arbitration may be entered and 
                 enforced as a judgment against a party in any court of 
                 competent jurisdiction or application may be made to such court
                 for a judicial acceptance of the award and an order of 
                 enforcement, as the case may be.

     8.5  Nothing in the foregoing shall prevent a party from initiating such 
          conservatory measure proceedings as are necessary to protect any arm's
          length third party rights.



                                       5
<PAGE>


     8.6  The fact that a dispute is brought to arbitration does not relieve 
          either party from its obligation to fulfill its commitments as 
          provided by the contract.

9.   PERFORMANCE GUARANTEE

     9.1  The Supplier shall, within thirty (30) days following execution of 
          this contract, deliver to TELEGLOBE a form of security, reasonably 
          acceptable to TELEGLOBE, in the amount of sixty percent (60%) of the 
          contract price and providing for the unconditional performance by the 
          Supplier of its obligations under this contract (the "performance 
          security"). Although to be issued for sixty percent (60%) of the 
          contract price, the performance security will automatically reduce to
          twenty-five percent (25%) of the contract price upon provisional 
          acceptance and to zero percent (O%) upon final acceptance. All costs 
          for such security shall be paid by the Supplier.

     9.2  Notwithstanding anything to the contrary contained in this contract, 
          until such performance security has been delivered to it, TELEGLOBE 
          may withhold any amounts due to the Supplier.

     9.3  Upon delivery of the security to TELEGLOBE, it shall promptly pay to 
          Supplier all withheld amounts.

10.  UNITED NATIONS CONVENTION

     The Parties intend to exclude the application of the United Nations 
     Convention on Contract for the International Sale of Goods to this 
     contract. Accordingly, this contract shall not be subject to the United 
     Nations Convention for the International Sale of Goods but rather this  
     contract shall be governed by the internal rules in force in the Province 
     of Quebec.

11.  GOOD FAITH

     The Parties acknowledge to one another that each respectively intends to 
     perform its obligations as specified in this contract in good faith.

12.  PARTIES TO ACT REASONABLY

     The Parties agree to act reasonably in exercising any discretion, judgment,
     approval or extension of time which may be required to effect the purpose 
     and intent of this contract. Whenever the approval or consent of a party is
     required under this contract, such consent not be unreasonably withheld or 
     delayed.



                                       6
<PAGE>


13.  ANNEXES

     The following annexed documents form an integral part of this contract:

     ANNEX 1 - GENERAL TERMS AND CONDITIONS;
     ANNEX 2 - SPECIFICATION No. 93-375, LAST REVISION DATED
               AUGUST 10, 1994; 
     ANNEX 3 - LIST OF SOFTWARE AND EQUIPMENT;
     ANNEX 4 - INSURANCE REQUIREMENTS.
     ANNEX 5 - MUTUAL CONFIDENTIALITY AGREEMENT.

14.  COUNTERPARTS

     This contract may be executed in any number of counterparts, each of which 
     shall be deemed to be an original and all of which taken together shall be 
     deemed to constitute one and the same instrument.

15.  BENEFIT OF THE CONTRACT

     This contract shall enure to the benefit of and be binding upon the 
     respective successors and permitted assigns of the Parties hereto.


IN WITNESS WHEREOF the parties have signed on the dates and at the respective 
locations appearing hereunder.

At Montreal, Province of Quebec, on this 12th day of August, 1994.


                        TELEGLOBE CANADA INC.


                        Per: /s/
                            ------------------------------------
                        Title:  Vice President Network
                               ---------------------------------
                        Per: /s/ Guy Millette
                            ------------------------------------
                        Title: 
                               ---------------------------------



                                       7
<PAGE>


At Gaithersburg, Maryland, of U.S.A. on this 17th day of August, 1994.



                        AMERICAN COMPUTER AND ELECTRONICS CORPORATION


                        Per: /s/ George T. Jimenez
                            ------------------------------------
                        Title:  President
                               ---------------------------------
                        Per: /s/ Thomas V. Russotto
                            ------------------------------------
                        Title:  Vice President
                               ---------------------------------


                                       8

<PAGE>

                                     ANNEX 1


                          GENERAL TERMS AND CONDITIONS







<PAGE>


                                TABLE OF CONTENTS


NO.      ARTICLE                                                            PAGE

1.       DEFINITIONS......................................................

2.       OPERATIONAL REQUIREMENTS AND
           PROTECTION OF EXISTING SYSTEMS.................................

3.       CONDITION OF SITE................................................

4.       SUPERVISION AND REMOVAL OF PERSONNEL.............................

5.       SAFETY AND SECURITY..............................................

6.       EMERGENCIES......................................................
\
7.       DOCUMENTATION AND LABELING.......................................

8.       SPECIFICATIONS, DRAWINGS.........................................

9.       DEPARTURES FROM SPECIFICATION....................................

10.      CHANGE ORDERS....................................................

11.      LOCAL LAWS AND PERMITS...........................................

12.      IN-PLANT AND ON-SITE TESTING.....................................

13.      RIGHT TO USE SOFTWARE AND EQUIPMENT..............................

14.      PROVISIONAL ACCEPTANCE...........................................

15.      FINAL ACCEPTANCE.................................................

16.      CONDITIONS OF PAYMENT............................................

17.      PENALTY..........................................................

18.      TERMINATION FOR DEFAULT..........................................

19.      TITLE AND RISK...................................................



                                       i
<PAGE>


NO.      ARTICLE                                                            PAGE

20.      INDUSTRIAL AND INTELLECTUAL PROPERTY.............................

21.      SOURCE CODE AND OBJECTIVE CODE...................................

22.      WARRANTY AND SUPPLIER'S SUPPORT..................................

23.      INSURANCE........................................................

24.      INDEMNIFICATION..................................................

25.      PRIVILEGES, HYPOTHETICS OR LIENS, FOR
           LABOR, MATERIALS OR OTHERWISE..................................

26.      PUBLIC RELEASE OF INFORMATION....................................

27.      PATENTS AND OTHER INTELLECTUAL AND
           INDUSTRIAL PROPERTY............................................

28.      SUPPLIER NOT AGENT...............................................

29.      ASSIGNMENT AND SUBCONTRACTING....................................

30.      WHOLE CONTRACT...................................................

31.      INFORMATION FROM TELEGLOBE.......................................

32.      MEETINGS.........................................................

33.      CONFIDENTIALITY..................................................

34.      OPTIMIZATION OF R&D INCOME TAX BENEFITS..........................

35.      FORCE MAJEURE....................................................

36.      SURVIVAL.........................................................

37.      SEVERABILITY.....................................................

38.      AMENDMENTS AND WAIVER............................................



                                       i
<PAGE>


                                     ANNEX I

                          GENERAL TERMS AND CONDITIONS


1.  DEFINITIONS

    Unless the context otherwise requires, the following definitions shall 
    apply to this contract:

    1.1  "contract" means and includes all these General Terms and Conditions  
         and the Specific Terms and Conditions to which this document is annexed
         and any other documents referred to as forming part of this contract;

    1.2  "delivery" means and includes the shipping and unloading of the 
         software and the equipment at the sites;

    1.3  "existing software" means the software already in possession of the 
         Supplier as specified in Annexes 2 and 3 hereof;

    1.4  "installation" means the mechanical and electrical installation of the 
         software and the equipment and includes the putting into place, 
         fastening, connecting, testing, aligning and making ready for putting 
         the software and the equipment into service;

    1.5  "Party" or "Parties" means either TELEGLOBE or the Supplier if used in 
         the singular, and both TELEGLOBE and the Supplier if used in the 
         plural.

    1.6  "software and equipment" means the existing software, the software 
         enhancements, the equipment listed in Annex 3 and any other software or
         hardware components necessary to meet the requirements of the 
         specification;

    1.7  "software enhancements" means the software functionality and related 
         documentation developed by the Supplier exclusively for Teleglobe 
         pursuant to this contract and specified in Annexes 2 and 3 hereof and 
         includes all drawing, technical documentation, source code, object code
         and any other information related thereto;

    1.8  "specifications" means the description of the overall and detailed 
         tasks and software and equipment requirements specified in Annex 2 and
         includes all technical definitions and descriptions, plans, drawings, 
         designs and 



<PAGE>


         standards therein contained or referred to, and as may be prepared or 
         utilized in carrying out this contract;

    1.9  "supplier's representative" means the employee or agent of the Supplier
         who is designated in writing by the Supplier as being in full charge of
         the operations of the Supplier on the site for the purposes of this 
         contract.

2.  OPERATIONAL REQUIREMENTS AND PROTECTION OF EXISTING

    2.1  The Supplier shall at all times exercise all necessary precautions 
         while working at the site not to interfere with the operation of 
         existing systems or software and equipment located at or near the site.
         Any tasks carried out at the site shall be coordinated in advance with 
         TELEGLOBE.

    2.2  The Supplier shall adequately protect at the site existing building 
         structure, software and. equipment, installations and promises from any
         damage from water, dust, temperature extremes, impact and any other 
         causes and agrees to assume all liability for any such damage 
         attributable to his work or presence at the site.

3.  CONDITION OF SITE

         The Supplier shall at all times keep the site, including working and 
         storage areas it uses, free from rubbish and waste material. If the 
         Supplier fails to do so promptly, TELEGLOBE shall have the right to 
         have the necessary cleaning up carried out at the Supplier's expense.

4.  SUPERVISION AND REMOVAL OF PERSONNEL

    4.1  When warranted by the tasks being performed, the Supplier shall have on
         the site a representative having authority to receive on behalf of the
         Supplier any request, instruction or other notice that may be given 
         under the contract by TELEGLOBE and to respond thereto.

    4.2  The Supplier shall, at the request of TELEGLOBE, remove from the site 
         any person there employed who, in the opinion of TELEGLOBE, is 
         intemperate, disorderly, negligent, dishonest, incompetent or has 
         otherwise been conducting himself improperly and the Supplier shall not
         permit a person so removed to return to the site.

5.  SAFETY AND SECURITY

    The Supplier shall at all times exercise all necessary precautions for the 
    safety of his employees and those of his subcontractors and agents in 
    compliance with all statutory requirements and shall also observe the 
    safety, security and conduct 

                                       2
<PAGE>


    rules and regulations of TELEGLOBE and or those of TELEGLOBE's lessor, as 
    may apply, when working within the site area.

6.  EMERGENCIES

    TELEGLOBE has authority, in an emergency, to stop the Supplier's work or any
    part thereof whenever, in TELEGLOBE's opinion, such stoppage may be 
    necessary for security reasons or to ensure the safety of persons, or 
    neighboring property. The foregoing shall NOT imply any obligation for 
    TELEGLOBE to exercise such authority nor impose any responsibility 
    whatsoever upon TELEGLOBE, should TELEGLOBE not exercise said authority in 
    any given circumstance.

7.  DOCUMENTATION AND LABELING

    The Supplier undertakes to provide TELEGLOBE all documentation and labeling
    specified in Annex 2 hereof in addition to that which is usually provided 
    with the software and the equipment, and thereafter to make available and to
    offer to TELEGLOBE at reasonable price all pertinent new documentation, 
    updates, editions or revisions of same.

8.  SPECIFICATIONS, DRAWINGS

    Subject to the provisions of clause 20.3 hereof, all specifications, samples
    and other information or documents furnished to the Supplier by TELEGLOBE in
    connection with this contract shall be used by the Supplier solely for the 
    purpose of carrying out the object of this contract and for no other purpose
    except with the prior consent in writing of TELEGLOBE, and shall remain the 
    property of TELEGLOBE and be returned to TELEGLOBE upon demand. All 
    intellectual and industrial property in these documents when produced by 
    TELEGLOBE shall vest in and remain at all times that of TELEGLOBE.

9.  DEPARTURES FROM SPECIFICATION

    9.1  All requests by the Supplier for departures from specification shall be
         submitted to TELEGLOBE in writing.  Every such request shall include an
         analysis of the effect of said departure on the overall specification 
         and on the contract price.

    9.2  TELEGLOBE reserves the right to either approve or reject in writing 
         requests for such departure, at the discretion of TELEGLOBE and without
         obligation to justify any decision pertaining thereto.

10. CHANGE ORDERS



                                       3
<PAGE>


    10.1  TELEGLOBE shall have the right to order changes to the object of this
          contract, subject to the following conditions:

          10.1.1  TELEGLOBE shall first provide the Supplier with a written 
                  request giving details of the proposed change;

          10.1.2  within fifteen (15) days of receipt of this information, the 
                  Supplier shall advise TELEGLOBE of the details of any increase
                  or decrease in the contract price, or revision in the time of 
                  completion, that would be required to implement the change. 
                  The proposed adjustment to the contract price and to time for
                  completion, shall be fair and reasonable to both TELEGLOBE and
                  the Supplier;

          10.1.3  TELEGLOBE may then, by written notice, authorize the Supplier
                  to proceed with the change, which the Supplier shall then be 
                  obliged to implement in accordance with a mutually agreed upon
                  timetable;

          10.1.4  if the change so directed by TELEGLOBE affects other 
                  obligations in addition to conditions of price or delivery, 
                  the Supplier shall so advise at the time of its quotation for 
                  the change.  Unless such advice is received by TELEGLOBE, the 
                  change shall in no way after or void other obligations of the 
                  Supplier under this contract.

    10.2  In no event shall the Supplier proceed with changes prior to their 
          written authorization by TELEGLOBE.


11. LOCAL LAWS AND PERMITS

    To the extent that same affects the Supplier's performance of its 
    obligations under this contract, a the Supplier shall, at no additional 
    cost to TELEGLOBE and to the complete exoneration of TELEGLOBE, comply 
    with all applicable federal, provincial and municipal laws, by-laws and 
    regulations, including those in force in the locality within which work 
    is being executed hereunder.

12. IN-PLANT AND ON-SITE TESTING

    12.1  The Supplier shall notify TELEGLOBE of forthcoming final in-plant and
          on-site tests adequately in advance so that authorized representatives
          of TELEGLOBE may be present during any such tests. The Supplier shall 
          further provide TELEGLOBE adequately in advance with complete test 
          plans and test procedures, for TELEGLOBE's approval prior to 
          commencement of final in-plant or on-site testing.



                                       4
<PAGE>


    12.2  Unless otherwise stipulated by the specifications or requested by 
          TELEGLOBE, the software and the equipment shall not be shipped until
          such time as the software and the equipment has been tested in-plant
          to the satisfaction of TELEGLOBE.

    12.3  After installation, individual software and equipment tests and 
          relevant system-level tests shall be performed on-site by the Supplier
          so as to verify that the performance is in accordance with the 
          specification.

    12.4  The Supplier shall carry out retesting or additional testing at 
          TELEGLOBE's request, as may be necessary to properly verify that the 
          software and equipment operates in compliance with the requirements 
          set out in this contract. The cost of retesting whether in-plant or 
          on-site shall be at the Supplier's expense except that in the event 
          that mutual agreement cannot be reached as to the reasonableness of 
          retesting, then the Supplier shall repeat the test, and the cost of 
          direct wages and travel expenses in respect of such retesting shall be
          borne by TELEGLOBE in the event that the results of the tests are the
          same as those previously recorded, within  the said measurement 
          tolerance stipulated in the specifications. If not within the 
          measurement tolerance, such costs as well as the costs of retesting 
          shall be at the Supplier's expense, including the cost to TELEGLOBE of
          direct wages and travel expenses related to such retesting.

    12.5  Should on-site testing with telecommunications traffic result in the
          Supplier, his employees or subcontractors, becoming aware of private 
          communications, the Supplier agrees that such communications will not
          be disclosed and the Supplier undertakes to include appropriate 
          provisions in any subcontracts with the view to protecting the 
          confidentiality and privacy of communications.  TELEGLOBE may also, as
          it deems necessary, specify other reasonable security requirements, 
          and the Supplier agrees to ensure that his own and the subcontractors
          testing staff shall submit to such requirements and that they will
          meet the criteria established by TELEGLOBE to that affect.

13. RIGHT TO USE SOFTWARE AND EQUIPMENT

    TELEGLOBE shall not be prevented from commencing and continuing the use 
    of the software and the equipment whether such software and equipment 
    may or may not comply in all respects with the specification.  However, 
    such use by TELEGLOBE shall not imply, nor be construed as, nor 
    constitute, provisional or final acceptance of the software and the 
    equipment or any part thereof, neither shall it prejudice any of 
    TELEGLOBE's rights under this contract, nor shall it relieve the 
    Supplier from any of his obligations hereunder.



                                       5
<PAGE>


14. PROVISIONAL ACCEPTANCE

    14.1  The Supplier shall notify TELEGLOBE in writing when, in his 
          opinion, all prerequisite conditions for provisional acceptance have 
          been met. Within thirty (30) days following receipt of such 
          notification TELEGLOBE shall advise the Supplier in writing that 
          provisional acceptance is granted, or that, for stated reasons,
          provisional acceptance is withheld.

    14.2  Prerequisite conditions for provisional acceptance, in addition to 
          full compliance with all other applicable terms and conditions of this
          contract, area

          14.2.1  completion of delivery of all software and equipment related 
                  to Phase 1 as defined in Annex 2;

          14.2.2  completion of all on-site tasks including installation and 
                  on-site testing of the Phase 1 as specified in Annex 2;

          14.2.3  receipt and approval by TELEGLOBE of all relevant 
                  documentation, including certified in-plant and on-site test 
                  records, with all departures from specification covered by 
                  written waivers.

    14.3  The granting of provisional acceptance by TELEGLOBE shall in no way
          release the Supplier from his liability, nor his obligation to perform
          in full conformity with all the requirements of this contract. If 
          defects or deficiencies are found after provisional acceptance, 
          TELEGLOBE will give written notice thereof to the Supplier who shall 
          correct same within the shortest reasonable time. Failure by the 
          Supplier to do so will entitle TELEGLOBE to have any such defects or 
          deficiencies corrected at the Supplier's expense.

15. FINAL ACCEPTANCE

    15.1  The Supplier shall notify TELEGLOBE in writing when, in his 
          opinion, all prerequisite conditions for final acceptance have been
          met. Within thirty (30) days following receipt of such notification,
          TELEGLOBE shall advise the Supplier in writing that final acceptance
          is granted or that, for stated reasons, final acceptance is withheld.
          Prerequisite conditions for final acceptance, in addition to full 
          compliance with all the other terms and conditions of this contract,
          are as follows:

          15.1.1  completion of delivery of all software and equipment related 
                  to Phase 2 as defined in Annex 2.



                                       6
<PAGE>


          15.1.2  revisions and updates to all pertinent handbooks, manuals,
                  drawings, and all other documentation have been completed 
                  and delivered to the satisfaction of TELEGLOBE;

          15.1.3  all defects and deficiencies have been corrected to the 
                  satisfaction of TELEGLOBE, and the performance of the software
                  and the equipment of Phases 1 and 2 is in full accordance with
                  the specification;

          15.1.4  written confirmation of the Supplier's employees or its 
                  subcontractor's employees with regard to the ownership of all
                  software enhancements in accordance with clause 20.3 hereof;

          15.1.5  if requested by TELEGLOBE, submission by the Supplier of a 
                  sworn statement on title and liens, privileges or hypothecs in
                  a form satisfactory to TELEGLOBE, in accordance with 
                  sub-clause 25.2 hereof;

          15.1.6  all final approval certificates required by any by-law or 
                  permits required for -the carrying out of this contract, have
                  been issued and copied to TELEGLOBE.

16. CONDITIONS OF PAYMENT

    16.1  No progress payment shall become due and be paid until all 
          events previously scheduled in clause 4 of the Specific Terms and 
          Conditions of this contract, up to and including the event for 
          which payment is invoiced, have been duly completed.

    16.2  Invoicing and payment shall be carried out as follows:

          16.2.1 all Supplier's invoices shall separately show any 
                 applicable sales taxes, duties or other levies;

          16.2.2 all invoices submitted under this contract shall 
                 indicate the contractor's GST registration number as well as 
                 the GST amount separately if applicable. Invoices not 
                 complying with the above will be returned to the contractor 
                 for correction. TELEGLOBE will not be liable to the contractor 
                 for any interest charges or other similar penalty for delays 
                 in making payments resulting from the foregoing;



                                       7



<PAGE>


          16.2.3  all invoices shall be addressed in triplicate to TELEGLOBE's 
                  Accounts Payable, 17th Floor, expressly stating the contract 
                  number appearing on the front page of this contract;

          16.2.4  subject to the conditions of this article, TELEGLOBE will pay
                  the Supplier's invoices within thirty (30) days of their 
                  receipt.

    16.3  The making of any payment hereunder shall not be deemed as 
          evidence that the event for which pa  is made has been completed 
          satisfactorily and shall not relieve the Supplier from the 
          responsibility for full and satisfactory performance of this contract.

17. PENALTY

    17.1  Except in the event of:

          a)  force majeure as defined in clause 35 hereof;

          b)  any emergency situation occurring under the provisions of clause 6
              hereof;

          c)  any default (whether or not intentional) or negligence on the part
              of TELEGLOBE;

          failure by the Supplier to meet the final acceptance date specified in
          this contract, shall result in the Supplier becoming indebted to 
          TELEGLOBE, as a penalty for simple delay, and not as liquidated 
          damages, for the amount one percent (1%) of the contract price for 
          each calendar week of delay, commencing at zero hour one minute 
          (00:01) the day after the provisional acceptance date specified 
          herein, and ending on the date the Supplier has met the provisional
          acceptance requirements in accordance with this contract or on the 
          date TELEGLOBE terminates this contract. The total amount of penalty
          under this clause shall not exceed ten percent (10%) of the contract
          price.

    17.2  Any delay or permission granted for completion of provisional 
          acceptance requirements after the specified date for provisional 
          acceptance, or any payment to TELEGLOBE of the penalty specified 
          herein, shall not be construed as a waiver of or a bar to 
          TELEGLOBE's rights to recover any damages and costs as a result of the
          Supplier's failure to perform in strict accordance with the terms of 
          this contract, nor as a waiver of or a bar to TELEGLOBE's right to 
          require full performance of this contract by the Supplier.



                                       8
<PAGE>


18. TERMINATION FOR DEFAULT

    18.1  Without prejudice to any other recourse or right of TELEGLOBE
          hereunder or at law, if the Supplier fails to satisfactorily deliver 
          or install the software and the equipment or part of it on schedule, 
          except in the event of force majeure as defined in clause 35 hereof, 
          any emergency situations occurring under the provisions of clause 6 
          hereof or any default (whether or not intentional) or negligence on 
          the part of TELEGLOBE, or if the Supplier is otherwise in default 
          under this contract, TELEGLOBE may by written notice to the Supplier 
          terminate this contract. In the event of such termination, the 
          Supplier shall only be entitled to payment for that part of the 
          software and the equipment, if severable, which has been accepted and 
          delivered, provided that TELEGLOBE then determines that part to be 
          truly useful.

    18.2  Should TELEGLOBE decide that it does not require any part of 
          the software and the equipment, then the Supplier shall remove at its
          own expense any such part already delivered to the place of delivery,
          and notwithstanding that title to that software and equipment have 
          vested in TELEGLOBE, such title shall revert back to the Supplier upon
          removal, and the Supplier shall, without prejudice to any claims 
          TELEGLOBE may have hereunder or at law, reimburse TELEGLOBE forthwith 
          all moneys paid by TELEGLOBE to the Supplier in respect of such part.

    18.3  TELEGLOBE may also terminate this contract should the Supplier 
          become insolvent, file for bankruptcy, take advantage of any legal 
          scheme for the relief of debtors, adopt a resolution for his 
          winding-up or for the bulk sale of his assets, or if a petition in 
          bankruptcy, for receivership or for winding-up is taken against him 
          and is not contested or withdrawn within thirty (30) days from its 
          inception.

    18.4  Upon the giving of such a notice, TELEGLOBE may by written 
          notification within ten (10) days require the Supplier to deliver any
          software and equipment, work-in-process, parts or other material which
          the Supplier has specifically acquired or produced in accordance with 
          this contract and the Supplier shall comply with such requirements
          within thirty (30) days. TELEGLOBE shall credit the Supplier, less the
          amount of any claim against the Supplier, the value of same.

    18.5  The total payment made to the Supplier pursuant to this 
          clause, added to any other payment previously made hereunder and 
          related to a particular part of the software and the equipment, shall
          not exceed the contract price applicable to the software and the 
          equipment or to said particular part thereof, as may be modified, from
          time to time by the Parties, in accordance with clause 10 hereof.



                                       9
<PAGE>


    18.6  Upon termination for default, TELEGLOBE shall have the right 
          to have the installation, if partially or unsatisfactorily completed 
          hereunder, completed as per the specifications, the whole at the sole
          cost and expense of the Supplier Teleglobe acting reasonably, subject
          to any further recourses available to TELEGLOBE hereunder or at law.

    18.7  The Supplier may also terminate this contract if TELEGLOBE is 
          in default under this contract for the payment of the Supplier 
          invoices in accordance with clause 16 hereof.

    18.8  Except in the event as provided in clause 18.3, the right of 
          either Party to invoke termination of this contract may only occur if
          the condition giving rise to the default is not remedied within thirty
          (30) days of receipt of written notice by the nondefaulting Party 
          specifying such default.

19. TITLE AND RISK

    19.1  Title to the software enhancements, the equipment, documentation and 
          spare parts shall vest in TELEGLOBE as soon as their delivery has 
          taken place.  However, when and if any software enhancements and 
          equipment is rejected, its title shall revert to the Supplier upon 
          notice of said rejection.

    19.2  Such vesting of the title in TELEGLOBE shall not be construed 
          as an acceptance by TELEGLOBE, nor shall it affect or modify the other
          rights of TELEGLOBE hereunder or at law, nor shall it release in any 
          way whatsoever the Supplier from any of his obligations and 
          liabilities for defective workmanship, materials and performance, nor
          from his obligations leading up to final acceptance and full 
          performance hereunder.

    19.3  Notwithstanding title having passed to TELEGLOBE or any 
          insurance coverage that TELEGLOBE may benefit from, the Supplier shall
          bear the risk of all loss of or damage to any software and equipment 
          until Final acceptance. In the event of such loss or damage, the 
          Supplier shall repair and restore or replace the damaged or lost 
          software and equipment and provide all necessary and associated work 
          therefor, the whole at the Supplier's sole expense.

    19.4  In the event of termination for default as specified in clause 18 
          hereof, title to all software enhancements and equipment or 
          work-in-process shall, in the event that TELEGLOBE should require the
          delivery of such software and equipment or work-in-process under the 
          terms of such clause, vest in TELEGLOBE as soon as the delivery 
          thereof has been completed.



                                       10
<PAGE>


20. INDUSTRIAL AND INTELLECTUAL PROPERTY

    20.1  The software enhancements shall be the sole property of 
          TELEGLOBE and any patent, copyright, trade mark appellation or other
          industrial and intellectual property including moral rights, which may
          derive therefrom vests in TELEGLOBE.

    20.2  TELEGLOBE may register in its own name, any industrial or 
          intellectual property rights pertaining to such software enhancements
          and the Supplier shall fully cooperate with TELEGLOBE in the process
          of such registration.

    20.3  The Supplier and TELEGLOBE express their mutual desire to 
          enter into a "License Agreement" under which each Party will receive
          perpetual world wide, non-exclusive rights, to respectively license 
          the software enhancements and the existing software in conjunction
          with their own software and other products.  The  relationship 
          contemplates payments of license fees and royalties in amounts yet to
          be finalized. As well certain rights, obligations and limitations yet 
          to be finalized and set out in the License Agreement. The Parties 
          agree to negotiate the terms and the conditions of the License 
          Agreement and to conclude same on or before November 11, 1994.

    20.4  The Supplier shall provide TELEGLOBE before final acceptance 
          with a written confirmation of the Supplier's employees or its 
          subcontractors' employees that the ownership of all software 
          enhancements created by said employees, including the related 
          copyrights, trade secrets, patent rights and moral rights will belong
          to TELEGLOBE.

    20.5  The Supplier grants or shall procure the granting to TELEGLOBE 
          and at no additional charge a personnel, non-transferable and 
          non-exclusive and worldwide right to use all existing software and
          related documentation.

    20.6  Subject to provisions of clause 20.3 hereof, the Supplier and 
          TELEGLOBE will at all times and from time to time make complete and 
          full disclosure to each other of all improvements of software 
          enhancements and existing software, and shall deliver or make 
          available to each other all documents, papers, drawings, records,
          designs, specifications, reports and other information relating 
          thereto. The property of such improvements and the right to use it 
          shall be governed by paragraphs 20.1 to 20.5 above.


                                      11
<PAGE>

21. SOURCE CODE AND OBJECTIVE CODE

    The supplier hereby agrees to remit to TELEGLOBE one copy of the source
    code and object code of the latest version of the existing software 
    including the documentation pertaining hereto, at the same time of the 
    delivery to TELEGLOBE of the source code and object code of the software 
    enhancements in accordance with clauses 19 and 20 hereof. TELEGLOBE 
    shall treat the copy of the source code and object code of the existing 
    software as confidential and subject to clause 33 hereof. For purposes 
    of clarity, TELEGLOBE expressly acknowledges and agrees that the 
    existing software constitutes confidential information of the Supplier 
    and is of great and central importance to and a valuable asset of the 
    Supplier and is critical to its day to day operations. TELEGLOBE agrees 
    that it will exercise the same degree of care and discretion with 
    respect to this confidential information as it exercises in protecting 
    its own confidential information and particularly in the case of the 
    source code and all associated specifications, will seal and only access 
    same as specifically authorized under the contract, and in particular, 
    upon conclusion of the License Agreement referred to in clause 20.3.

22. WARRANTY AND SUPPLIER'S SUPPORT

    22.1  Notwithstanding inspection, provisional or final acceptance by 
          TELEGLOBE, any other terms of the contract, and any other rights,
          remedies or warranties implied or imposed by law, the Supplier 
          warrants that all software and equipment supplied under this contract
          is new, free from defects in design, material or workmanship, and that
          it is of proper quality and in full conformity with all the 
          requirements of this contract and that all tasks performed hereunder 
          are in conformity with recognized professional practices.

    22.2  The Supplier warrants that he has good title to all software 
          and equipment, parts and components supplied, free and clear from all
          lions, privileges, hypothecs, encumbrances or any agreement by which
          an interest therein is retained by the original supplier or seller 
          thereof, a financial institution, lender or any other party.

    22.3  At any time during the one (1) year after final acceptance is 
          granted hereunder, hereinafter referred to as the warranty period, the
          Supplier at his own expense shall correct any finished work or replace
          without delay any software and equipment which is or becomes defective
          or which fails to conform to the specifications. TELEGLOBE will return
          the defective software and equipment to the Supplier who shall correct
          or replace same within a reasonable time. Where, in the opinion of
          TELEGLOBE, it is not expedient to remove such defective software and 
          equipment from the site, the Supplier shall replace it or make it good
          at the site. If the Supplier fails



                                       12
<PAGE>


          to so perform promptly after notification from TELEGLOBE, TELEGLOBE
          may proceed to have corrections made by other means and the Supplier
          shall reimburse TELEGLOBE for all ensuing costs upon demand. If 
          TELEGLOBE is required to proceed in securing corrections through a
          third party, TELEGLOBE will, prior to undertaking any evaluation or
          corrective measures, require such third party to execute a 
          confidential nondisclosure agreement in favor of each TELEGLOBE and
          the Supplier.

    22.4  If repeated malfunctioning of the software and the equipment 
          prior to or during the warranty period shows that such software and 
          equipment cannot perform as specified, and if the Supplier has been 
          given an opportunity to make it good, TELEGLOBE may, demand delivery
          of. new software and equipment meeting the specification and its 
          installation at no extra cost under reserve of any other rights or 
          remedies, and the Supplier shall then perform accordingly.

    22.5  The Supplier shall provide TELEGLOBE at a reasonable cost, 
          technical support and advice concerning all aspects of the design, 
          maintenance and operation of the software and the equipment, when 
          required, to ensure the successful operation of the software and the 
          equipment throughout its useful life.

    22.6  The Supplier warrants the availability of replacement parts 
          and facilities to maintain all of the software and the equipment for
          at least ten (10) years.  In the event that the Supplier cannot supply
          mechanically identical units or components due to obsolescence then 
          the spares and replacements to be supplied shall be the functional 
          equivalents of the original parts. In addition, the Supplier shall 
          carry out as practicable at reasonable cost to TELEGLOBE, any 
          necessary adaptive engineering necessary and shall provide all 
          implementation documentation.

23. INSURANCE

    23.1  The Supplier shall at no additional cost to TELEGLOBE maintain 
          the insurance coverage set out in the Annex 4 attached to this
          contract.

    23.2  The insurance coverage to be provided hereunder by the 
          Supplier or any other insurance coverage that TELEGLOBE may benefit
          from, shall in no manner restrict or limit the Supplier's obligations
          hereunder. Furthermore, any such insurance coverage provided by the 
          Supplier shall be considered as primary coverage to any other valid 
          and collectible insurance that TELEGLOBE may benefit from.



                                       13
<PAGE>


24. INDEMNIFICATION

    The Parties shall indemnify and hold one another harmless from and 
    against any and all payments and liabilities for payment of compensation
    or damages which either Party may be required or held liable to make, to 
    or on account of the other Party, or which otherwise arises out of or is 
    connected with this contract. This indemnity shall extend to any and all 
    losses, damages, suits, proceedings or obligations of any kind incurred 
    by, or directed against either Party on account of any act or omission 
    of the other Party. Furthermore, the responsible Party shall defend at 
    its expense any such suits and proceedings and shall pay all expenses 
    incurred, fines imposed and satisfy all judgments rendered against the 
    wronged party in connection therewith.

25. PRIVILEGES, HYPOTHECS OR LIENS, FOR LABOR, MATERIALS OR OTHERWISE

    25.1  The Supplier shall promptly pay for all labor and material 
          used in the manufacturing, installation and testing of the software
          and the equipment, and in the event of failure by the Supplier at any
          time to do so, which in the opinion of TELEGLOBE is without legal
          cause, TELEGLOBE may retain from all monies due or to become 
          due to the Supplier such amount of money as TELEGLOBE may deem 
          sufficient to pay for the same, obtain title, or to secure TELEGLOBE
          from loss by such non-payment. TELEGLOBE may at its option pay for 
          such labor, services, or material, or any of the same, out of the 
          monies so retained by it, and shall thereby obtain title to the 
          portion of the software and the software and the equipment so
          paid for.

    25.2  Before final acceptance is granted by TELEGLOBE the Supplier shall 
          furnish, if requested to do so by TELEGLOBE, a solemn 
          declaration and or a title search or registration certificate 
          satisfactory to TELEGLOBE that the software and the equipment and any
          other property of TELEGLOBE or are free and clear from all privileges 
          or liens for labor, materials, or otherwise, from any other 
          encumbrances and that no claim then exists in respect of which a 
          privilege, prior claims, hypothecs or lien upon the said software and 
          equipment or property of TELEGLOBE could or might attach or suit be 
          brought against TELEGLOBE arising in respect of this contract.

    25.3  The Supplier hereby waives, renounces and releases all 
          privileges, prior claims, hypothecs or liens now existing or that may
          hereafter exist for labor performed or for materials or software and 
          equipment furnished under this contract upon the buildings in which 
          work is or has been executed and upon the lands on which same are 
          situated or upon any other property, and agrees to furnish a good and
          sufficient release of privilege or 


                                      14
<PAGE>

          lien from every person furnishing labor or materials under this 
          contract. The Supplier further agrees that no privilege, prior claims,
          hypothecs or lien, or "lis pendens" or other document purporting to 
          claim any privilege, prior claims, hypothecs or interest with respect
          to the said buildings and lands or any other property, shall be 
          registered against same, upon pain of liability for all damages which 
          may be incurred by said registration inclusive of all costs and fees 
          necessary to remove, radiate, strike out or cause to acquit or 
          discharge same.

26. PUBLIC RELEASE OF INFORMATION

    Either Party shall obtain the written consent of the other Party 
    concerning the content and timing of news releases, articles, brochures,
    advertisements, prepared speeches and other information releases,
    concerning this contract, within a reasonable time prior to the proposed 
    release of such information. Either Party shall not use the name of the 
    other Party or any of its trademarks or those of its affiliates or 
    corporation controlling or under the same control of such other Party 
    without first obtaining the written consent of the other Party.

27. PATENTS AND OTHER INTELLECTUAL AND INDUSTRIAL PROPERTY

    27.1  The Supplier shall hold harmless TELEGLOBE, its employees and 
          agents from and against, and will defend or settle at his expense, any
          claim, suit or proceeding brought against TELEGLOBE, its employees or 
          agents on the issue of infringement or alleged infringement of any 
          patent, copyright, trademark, industrial design or other form of 
          intellectual or industrial property, or unauthorized use or disclosure
          of information, in respect of the object of this contract. The 
          Supplier shall indemnify TELEGLOBE for any loss, damage or 
          expense whatsoever, including any settlement of final payment, legal 
          fees and costs, royalties and other sums payable in connection 
          with the carrying out of this contract or the use of or 
          disposal of the software and the equipment by TELEGLOBE, 
          ensuing from any such claim, suit or proceeding.

    27.2  TELEGLOBE undertakes to notify the Supplier promptly in 
          writing of any such claim, suit or proceeding. Upon the written 
          request of the Supplier and at his expense, TELEGLOBE further 
          undertakes to give him proper and full information, assistance and
          authority, as are available to TELEGLOBE, to settle or to defend any 
          such claim, suit or proceeding.

    27.3  In the event that the Supplier is unable to settle any such 
          claim, suit or proceeding or make arrangements or provide alternate
          software and equipment whereby its use by TELEGLOBE will be 
          non-infringing and satisfactory to TELEGLOBE, then the Supplier shall
          be liable to



                                       15
<PAGE>


          TELEGLOBE for TELEGLOBE's additional costs and damages arising as a 
          result of such impediment and TELEGLOBE shall have the right to 
          terminate this contract for default, return the software and the 
          equipment at the Supplier's cost and claim back the price shown in
          this contract for such software and equipment.

28. SUPPLIER NOT AGENT

    The Supplier expressly acknowledges that he is an independent 
    contractor and that this contract shall not in any way constitute nor 
    appoint, nor authorize the Supplier, his subcontractors or his employees 
    or agents to act as employees, partners or agents of TELEGLOBE, and that 
    furthermore no tax, assessment or legal liability of the Supplier, his 
    subcontractors or his employees or agents becomes, by reason of this 
    contract, an obligation of TELEGLOBE.

29. ASSIGNMENT AND SUBCONTRACTING

    29.1  The Supplier may not assign the whole or any part of this 
          contract nor subcontract any of his work hereunder without the prior
          written consent of TELEGLOBE which shall not be unreasonably withheld
          or unduly delayed.  Any assignment or subcontracting made without such
          consent shall be of no effect against TELEGLOBE.

    29.2  TELEGLOBE may assign, transfer, sell or dispose any of its 
          rights or obligations hereunder or under any software license related
          thereto to a legal successor, a statutorily designated assignee, or a 
          subsidiary of, or a corporation or entity controlling or under the 
          same control as TELEGLOBE, in which case a written notice to the 
          Supplier shall be given in a timely manner.

30. WHOLE CONTRACT

    The express terms and conditions of this contract agreed to by the 
    parties, are the only ones upon which any of their contractual rights 
    and obligations are to be founded and, without. limiting the generality 
    of the foregoing, this contract supersedes all previous communications, 
    negotiations and agreements, either written or oral, relating to the 
    object of this contract. There are no representations, warranties, 
    terms, conditions, undertakings or collateral agreements, express, 
    implied or statutory between the Parties other than as expressly set, 
    forth in this contract.

31. INFORMATION FROM TELEGLOBE

    31.1  The Supplier shall use its best efforts to identify all 
          information or documentation required from TELEGLOBE to perform the 
          Work. 



                                       16
<PAGE>


          However, if in execution of the Work, the Supplier shall 
          require additional information or documents from TELEGLOBE, TELEGLOBE 
          shall provide same, if possible, promptly upon written request and 
          reasonable notice from the Supplier. If TELEGLOBE fails to respond to 
          any request for information or documents as herein provided and 
          failure to provide such information or documents results in the 
          Supplier not being able to meet the Milestone dates, they 
          shall be extended by the length of the delay occasioned by 
          such cause, or, if necessary the Work shall be redefined by 
          the parties.  

    31.2  As an alternative to extension of any Milestone, TELEGLOBE may 
          direct the Supplier in writing to make assumptions regarding the 
          information or documents required by the Supplier from TELEGLOBE.
          TELEGLOBE must approve any assumptions made by the Supplier prior to
          their implementation into the Work, and if such assumptions are 
          subsequently shown to be invalid, TELEGLOBE may authorize the Supplier
          in writing to proceed with any necessary re-work.

32. MEETINGS

    At the request of either party, TELEGLOBE and the Supplier shall 
    meet to discuss matters related to the Work including progress, review 
    of results, analysis of problems, financial expenditures, adequacy of 
    information to be provided by TELEGLOBE pursuant to Article 6 and 
    changes in the Work.

33. CONFIDENTIALITY

    All information of the parties exchanged will be subject to the 
    obligation of the Mutual Confidentiality Agreement between the parties 
    attached hereto as Annex 5. The provisions of the Mutual Confidentiality
    Agreement shall continue in full force and effect save and except for 
    clause 16 thereof which shall be extended to five (5) years from the 
    contract date.

34. OPTIMIZATION OF R&D INCOME TAX BENEFITS

    34.1  TELEGLOBE intends to claim Income Tax benefits regarding these 
          expenditures. To this end, the Supplier shall optimize labor and 
          material expenditures in carrying out the Work, to the full extend to
          which they are procurable consistent with proper economy and 
          expeditious carry out of the Work.

    34.2  The supplier shall provide at TELEGLOBE's expense documentary 
          assistance to TELEGLOBE in the qualification of these expenditures 
          under the then current Canadian Federal and Provincial Scientific 
          Research and Experimental Development taxation regulations.



                                       17
<PAGE>


35. FORCE MAJEURE

    Neither party to this contract shall be liable for failure to 
    perform any of its obligations hereunder during any period in which such 
    performance is prevented by any cause beyond its reasonable control. In
    the event of any such delay the date any delivery or performance 
    hereunder shall be extended by the length of the delay occasioned by 
    such cause.  In the event the Supplier's production is curtailed, the 
    Supplier may allocate its available production, as reasonably equitable 
    in its opinion, among its various customers, following consultation with 
    its customers.

36. SURVIVAL

    The terms and conditions contained in this contract that by their 
    sense and context and more particularly articles 20, 26, 27 and 29 are 
    intended to survive the performance thereof or hereof by either or both 
    parties shall survive the completion of the performance and termination 
    of this contract.

37. SEVERABILITY

    In the event that one or more provisions contained in the contract 
    or any contract required hereunder to be delivered, shall be invalid, 
    illegal or unenforceable in any respect under any applicable law, the
    validity, legality and enforceability of the remaining provisions hereof 
    shall not be affected or impaired thereby.

38. AMENDMENTS AND WAIVER

    No modification of or amendment to this contract shall be valid or 
    binding unless set forth in writing and duly executed by both of the 
    Parties hereto and no waiver of any breach of any term or provision of 
    this contract shall be effective or binding unless made in writing and 
    signed by the Party purporting to give the same and unless otherwise 
    provided, shall be limited to the specific breach waived.



                                       18

<PAGE>

(Annexes 2 and 3 are confidential and have been omitted and filed separately 
with the Commission.)

<PAGE>

                                                                EXHIBIT 10.6






                                  LICENSE AGREEMENT


                                       BETWEEN


                                TELEGLOBE CANADA INC.


                                         AND


                    AMERICAN COMPUTER AND ELECTRONICS CORPORATION






<PAGE>

This License Agreement ("Agreement") made this 1st day of August 1995 between:


    TELEGLOBE CANADA INC., a Canada business corporation having its registered
    office at 1000 de La Gauchetiere Street West, Montreal, Quebec, H3B 4X5,
    hereinafter called "TELEGLOBE",

AND

    AMERICAN COMPUTER AND ELECTRONICS CORPORATION, a corporation having a place
    of business at 209 Perry Parkway,  Gaithersburg, Maryland, U.S.A. 20877,
    hereinafter called "ACE".


TELEGLOBE and ACE being sometimes referred to individually as "PARTY" and
collectively as "PARTIES".


WHEREAS the Parties entered into an agreement effective on July 20, 1994 for the
supply by ACE of equipment and software concerning the RETR project as defined
therein (the "SUPPLY AGREEMENT");


WHEREAS in accordance with the Supply Agreement, ACE agreed to develop from some
software already owned by ACE, new software, the ownership of said new software
being vested in TELEGLOBE upon acceptance;


WHEREAS in accordance with Article 20.3 of Annex 1 of the Supply Agreement, the
Parties expressed their mutual desire to enter into a License Agreement under
which each Party will receive worldwide and non-exclusive rights to respectively
license ACE's Products and Software and the RETR Software, as defined in this
Agreement in conjunction with their own software and other products;


NOW THEREFORE, the Parties hereto, in consideration of the mutual covenants
herein contained covenant and agree with each other as follows:


1.  DEFINITIONS

    As used in this Agreement, the terms set forth below shall be defined as
    follows, such definitions being cumulative of those set forth elsewhere in
    this Agreement:

    1.1  "ACE'S PRODUCTS AND SOFTWARE" shall mean the products and software
         listed in Annex A attached hereto and forming part hereof.

<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 3
- --------------------------------------------------------------------------------

    1.2  "RETR SOFTWARE" shall mean ACE's Products and Software with the
         Software Enhancements.

    1.3  "Software Enhancements" shall mean the software enhancement described
         in Annex B attached hereto and forming part hereof;

    1.4  "TELEGLOBE's CUSTOMER" shall mean a customer to whom TELEGLOBE has
         sold or licensed ACE's Products and Software or has licensed the RETR
         Software or any part thereof;

    1.5  "TELEGLOBE's License Agreement" shall mean the license agreement for
         a TELEGLOBE's customer in the form attached hereto as Annex C.


2.  PURPOSE

    2.1  The Preamble shall form an integral part of this Agreement.

    2.2  The Parties hereto enter into this Agreement for the purpose of
         recording their agreement in accordance with Article 20.3 of Annex 1
         of the Supply Contract with regard to their respective rights and
         obligations concerning the sale or the licensing of ACE's Products and
         Software and the RETR Software or any part thereof.


3.  NATURE OF THE RELATIONSHIP

    3.1  The Parties shall fully cooperate each with the other in implementing
         this Agreement and each Party will, from time to time, and upon any
         reasonable request of the other Party consistent with the terms and
         conditions of this Agreement, make or cause to be made all such
         further acts, deeds, assurances and things as may be required to more
         effectually implement the true intent of this Agreement.

    3.2  Except as otherwise specifically provided herein, each Party shall
         bear the costs and expenses that are incurred or may be associated
         with each Party's activities undertaken pursuant to this Agreement.

    3.3  The relationship and common enterprise between and among the Parties
         hereto shall not be that of partners and shall be limited to the
         express provisions of this Agreement.  Nothing herein contained shall
         be deemed to constitute a partnership or societe de fait between and
         among them or to merge their assets or their fiscal or other
         liabilities or undertakings nor shall it allow a Party to act

<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 4
- --------------------------------------------------------------------------------


         as a mandatory or agent of the other Party or all of them, except to
         the extent specifically permitted hereunder.

    3.4  Subject to the specific limitation contained herein, nothing contained
         in this Agreement shall preclude either Party from acting in a similar
         way or in any other capacity for or with any other person, firm,
         company, or other third Parties and this Agreement does not constitute
         and shall not be construed or interpreted as an exclusive arrangement
         between the Parties.

    3.5  Unless expressly stated herein, nothing contained in this Agreement or
         in any discussion undertaken or disclosures made by one Party to the
         other shall be construed as representations or warranties made by one
         Party to the other that the participation of either Party in this
         Agreement will result in additional sales or the generation of any
         additional revenues.

    3.6  ACE may, from time to time, request from TELEGLOBE permission to
         demonstrate, at TELEGLOBE facilities, the RETR Software.  ACE shall
         provide TELEGLOBE with as much notice of such demonstrations as
         possible.  TELEGLOBE shall grant all site visit requests unless there
         is a reasonable objection to such a request.

    3.7  TELEGLOBE may, from time to time, request from ACE permission to have
         a TELEGLOBE customer visit the ACE facilities or an ACE Customer site
         installation.  TELEGLOBE shall provide to ACE with as much notice of
         such visits as possible.  ACE shall grant all site visit requests
         unless there is a reasonable objection to such a request.


4.  ACE'S PRODUCTS AND SOFTWARE

    4.1  ACE hereby grants to TELEGLOBE a worldwide and non-exclusive license
         to sell and license ACE's Products and Software including the ACE's
         Products and Software being a part of the RETR Software to
         international telecommunications carriers or other telecommunications
         carriers in which TELEGLOBE has an ownership interest or with which
         TELEGLOBE has concluded a strategic alliance.  Said sale and licensing
         can be made by TELEGLOBE in accordance with the TELEGLOBE's License
         Agreement.

    4.2  All sales made and license granted by TELEGLOBE will be subject to
         prior written confirmation by ACE.  ACE shall use its best effort to
         cooperate with TELEGLOBE for the sale and license of ACE's Products
         and Software and agrees to make available to TELEGLOBE, at its own
         costs, reasonable quantities of literature and promotional advertising
         materials for the purpose of promoting ACE's Products and Software.

<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 5
- --------------------------------------------------------------------------------

    4.3  ACE hereby grants to TELEGLOBE the right to use the name of ACE and
         the names of ACE's Product and Software in connection with activities
         authorized under this Agreement and in furtherance of the purposes of
         this Agreement, provided that such rights to use such names shall
         terminate upon the termination of this Agreement.

    4.4  ACE agrees to pack and to ship to TELEGLOBE's customer, at ACE's
         expenses the ACE's Products and Software sold as TELEGLOBE may
         specify, provided that ACE shall be given sufficient notice of the
         shipments required to enable it to manufacture or secure and ship the
         ACE's Products and Software.

    4.5  For any ACE's Products and Software sold and licensed by TELEGLOBE,
         ACE agrees to bill TELEGLOBE for the ACE's Products and Software at
         the regular published list prices shown in Annex D hereof.  Prices are
         in U.S. currency.  The list price shall include base price, extras
         and terms in effect at the time each order is shipped by ACE, less the
         particular discounts set forth in Annex E attached hereto (the "ACE
         PRICE").  ACE will advise TELEGLOBE by providing sixty (60) day's
         prior written notice of any changes in its regular published list
         prices.  It is understood that the new prices will not apply to ACE's
         Products and Software for which TELEGLOBE has obtained ACE's
         confirmation to sale in accordance with Article 4.2 hereof, prior to
         the receipt of the above notice.  For any other products or software
         not listed in Annex D hereto, ACE will upon request, provide TELEGLOBE
         with the applicable prices and discounts.

    4.6  ACE shall bear the risk of all loss of or damage to any ACE's Products
         and Software until complete delivery on TELEGLOBE's customer premises.

    4.7  ACE agrees that any warranty given by it for ACE's Product and
         Software sold and licensed by TELEGLOBE shall pass to TELEGLOBE's
         customer.

    4.8  ACE's Software will remain the property of ACE and TELEGLOBE will be
         entitled to only license such Software in accordance with the terms
         and conditions as specified by ACE.

    4.9  ACE's Price shall become due and payable on the following terms:

              a)   thirty (30) percent on order;
              b)   fifty (50) percent on delivery;
              c)   twenty (20) percent on acceptance by TELEGLOBE;

         Invoices and payment shall be in US dollars and carried out as
         follows:

         4.9.1     all ACE's invoices shall separately show any applicable
                   sales taxes, duties or other levies;


<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 6
- --------------------------------------------------------------------------------

         4.9.2     all invoices submitted under this Agreement shall indicate
                   ACE's GST registration number as well as the GST amount
                   separately.  Invoices not complying with the above will be
                   returned to ACE for correction.  TELEGLOBE will not be
                   liable to ACE for any interest charges or other similar
                   penalty for delays in making payments resulting from the
                   foregoing;

         4.9.3     all invoices shall be addressed in triplicate to TELEGLOBE's
                   Accounts Payable, 17th Floor, expressly stating the
                   Agreement number appearing on the front page of this
                   Agreement;

         4.9.4     subject to the conditions of this article, TELEGLOBE will
                   pay ACE's invoices within thirty (30) days of their receipt.

         4.9.5     The making of any payment hereunder shall not be deemed as
                   evidence that the event for which payment is made has been
                   completed satisfactorily and shall not relieve ACE from the
                   responsibility for full and satisfactory performance of this
                   Agreement.


5.  RETR SOFTWARE

    5.1  TELEGLOBE hereby grants to ACE a worldwide and non-exclusive license
         to commercialize and sublicense the Software Enhancements.  Each Party
         recognize that the other Party has the right to commercialize and
         sublicense the RETR Software in its entirety and to use the name of
         said RETR Software or any part thereof and the name of ACE as the
         developer and the maintenance provider of said RETR Software or any
         part thereof, for the purpose hereof and in accordance with the terms
         and conditions provided hereunder.

    5.2  LICENSING BY TELEGLOBE

         5.2.1     TELEGLOBE will not license the RETR Software or any part
                   thereof without first obtaining the consent of ACE which
                   consent shall not be unreasonably withheld.

         5.2.2     ACE agrees to give, at TELEGLOBE's expenses, to the
                   TELEGLOBE's customers the same warranty as the one described
                   in Article 22 of Annex 1 of the Supply Agreement.  The costs
                   of said warranty shall be agreed by the Parties prior to the
                   obtaining of ACE's consent as provided in Article 5.2.1
                   above.

         5.2.3     ACE agrees to pack and to ship to TELEGLOBE's customer, at
                   TELEGLOBE's expenses, the RETR Software licensed by
                   TELEGLOBE as

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 7
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                   TELEGLOBE may specify, provided that ACE shall be given
                   sufficient notice of the shipments to enable it to secure
                   and ship the RETR Software or any part thereof.

         5.2.4     Except as provided in Articles 5.2.2 and 5.2.3 above, ACE
                   will not be entitled to any royalty or any sharing of the
                   license fees received by TELEGLOBE for the licensing of RETR
                   Software or any part thereof.

    5.3  LICENSING BY ACE

         5.3.1     Except for ACE's Products and Software portion of the RETR
                   Software, ACE may not license the RETR Software or any part
                   thereof without first obtaining the written consent of
                   TELEGLOBE, which consent shall not be unreasonably withheld.
                   Such request shall be made in writing and addressed to
                   TELEGLOBE's Business Contact as provided in Article 12.7
                   hereof.  ACE hereby acknowledges that the RETR Software is a
                   strategic instrument in TELEGLOBE's development as an
                   intercontinental carrier and that the refusal of TELEGLOBE
                   to license the RETR Software to any of TELEGLOBE's
                   competitors shall be deemed reasonable.

         5.3.2     Payment of Royalties

                   ACE shall at all times keep an accurate account of the
                   operations coming under the scope of its license as provided
                   hereunder and shall render a full statement of the same in
                   writing to TELEGLOBE within thirty days (30) after each
                   quarterly period of each calendar year during the term of
                   this Agreement, and at the same time shall pay to TELEGLOBE
                   the amount of earned royalties (based on cash receipt to
                   ACE) as specified in Annex F hereto, accrued during the
                   corresponding quarterly period with the understanding that
                   TELEGLOBE shall have the right, at their own expense and not
                   more often than once in each three-month period, to have a
                   certified public accountant examine the books of ACE for the
                   purpose of verifying the royalty statements of the
                   operations coming under the scope of this Agreement.

         5.3.3     Licensing

                   Licensing of the RETR Software shall be made in accordance
                   with a license agreement substantially similar to the
                   TELEGLOBE's License Agreement.

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 8
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    5.4  MARKETING SUPPORT

         Each Party agrees to cooperate at its own cost, to the extent
         reasonably required by the other Party, for the purpose of marketing
         and licensing the RETR Software or any part thereof.

    5.5  FUTURE ENHANCEMENTS TO RETR SOFTWARE

         5.5.1     ACE will at all times and from time to time make complete
                   and full disclosure to TELEGLOBE of all improvements of RETR
                   Software, as defined in Article 1.2 in this Agreement, and
                   shall deliver or make available to TELEGLOBE all documents,
                   papers, drawings, records, designs, specifications, reports
                   and other information relating thereto.  These improvements
                   shall become part of ACE's Products and Software and Annex
                   A shall be amended to reflect this.  Rights of use of said
                   improvements will be governed by Articles 4 and 5 of this
                   Agreement.

         5.5.2     TELEGLOBE will at all times and from time to time make
                   complete and full disclosure to ACE of all improvements of
                   RETR Software, as defined in Article 1.2 in this Agreement,
                   and shall deliver or make available to ACE all documents,
                   papers, drawings, records, designs, specifications, reports
                   and other information relating thereto.  These improvements
                   shall become part of the Software Enhancements and Annex 8
                   shall be amended to reflect this.  Rights of use of said
                   improvements will be governed by Articles 4 and 5 of this
                   Agreement.


6.  CONSENT OR CONFIRMATION REQUIRED

    Each time, this Agreement provides for the consent or the confirmation of
    one Party, (the "consenting Party") such consent shall be given within two
    (2) business days from receipt by the consenting Party of such request,
    otherwise such confirmation or consent shall be deemed to be given upon the
    expiry of such delay.  Each request of consent or confirmation shall be
    supported by sufficient information relevant to the object of the request.


7.  PATENT AND OTHER INTELLECTUAL AND INDUSTRIAL PROPERTY

    Article 27 of Annex 1 of the Supply Contract applies MUTATIS MUTANDIS for
    the benefit of TELEGLOBE and TELEGLOBE's customers with regard to the ACE's
    Products and Software and the RETR Software or any part thereof.

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 9
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8.  SUPPORT

    For the installation, training, maintenance and support of ACE's Products
    and Software and the RETR Software, TELEGLOBE will refer directly
    TELEGLOBE's customers to ACE.  ACE agrees to offer to said TELEGLOBE's
    customers installation and training at prices set forth in Annex D and
    maintenance and support plan at the price in effect at the time of such
    request.

9.  TERM OF AGREEMENT

    Subject to the default provisions contained in Article 10 herein, the term
    of this Agreement shall commence on the date hereof and continue for a
    period of three (3) years.  Thereafter, this Agreement shall be renewed
    automatically for further terms of one (1) year each unless either Party
    gives to the other written notice of termination or intention to charge the
    Agreement at least sixty (60) days prior to the expiration of any such
    term.

10. TERMINATION

    10.1      The following events shall constitute events of default hereunder
              ("Events of Default") under the Agreement.

              10.1.1    A Party shall fail to observe or perform any of its
                        covenants or agreements contained in this Agreement or
                        in any other agreement or document executed pursuant
                        hereto and such failure shall not be capable of cure or
                        is capable of cure but remains uncured for a period of
                        thirty (30) days after receipt by the breaching Party
                        of written notice of such failure;

              10.1.2    A Party shall be insolvent, make an assignment for the
                        benefit of creditors, appoint or have appointed a
                        trustee, a receiver or similar officer, or commence or
                        have commenced against it a proceeding seeking
                        reorganization, rehabilitation, liquidation or similar
                        relief under any bankruptcy, insolvency or similar
                        debtor-relief statutes.

    10.2      Upon the occurrence of an Event of Default, the Party not in
              default shall have the right to terminate this Agreement
              immediately, provided that the covenants, agreements and
              obligations specified in Articles 4.5, 5.3.2, 12.4 and 12.6 shall
              survive the termination of this Agreement.

    10.3      Termination of this Agreement by the Party not in default in
              accordance with the terms hereof shall be without prejudice to
              any other rights or remedies such

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 10
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               Party shall have by law and shall be without liability for any
               loss or damage occasioned thereby.

11. INDEMNIFICATION AND LIMITATION OF LIABILITY

    11.1      The Parties shall indemnify and hold one another harmless from
              and against any and all payments and liabilities for payment of
              compensation or damages which either Party may be required or
              held liable to make, to or on account of the other Party, or
              which otherwise arises out of or is connected with this
              Agreement.  This indemnity shall extend to any and all losses,
              damages, suits, proceedings or obligations of any kind incurred
              by, or directed against either Party on account of any act or
              omission of the other Party.  Furthermore, the responsible Party
              shall defend at its expense any such suits and proceedings and
              shall pay all expenses incurred, fines imposed and satisfy all
              judgments rendered against the wronged Party in connection
              therewith.

    11.2      Notwithstanding the foregoing, neither TELEGLOBE nor ACE shall be
              liable to the other for any indirect or consequential damages,
              losses, liabilities, claims, costs or expenses of any kind or
              nature whatsoever, including, but not limited to, any loss of
              profits, business or goodwill.


12. GENERAL

    12.1      FORCE MAJEURE

    Neither Party to this Agreement shall be liable for failure to perform any
    of its obligations hereunder during any period in which such performance is
    prevented by any cause beyond its reasonable control.  In the event of any
    such delay, the date of any delivery or performance hereunder shall be
    extended by the length of the delay occasioned by such cause.  In the event
    ACE's production is curtailed, ACE may allocate its available production,
    as reasonably equitable in its opinion, among its various customers,
    following consultation with its customers.

    12.2      SEVERABILITY

    In the event that one or more provisions contained in the Agreement or any
    agreement required hereunder to be delivered, shall be invalid, illegal or
    unenforceable in any respect under any applicable law, the validity,
    legality and enforceability of the remaining provisions hereof shall not be
    affected or impaired thereby.

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 11
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    12. 3     AMENDMENTS AND WAIVER

    No modification of or amendment to this Agreement shall be valid or binding
    unless set forth in writing and duly executed by both of the Parties hereto
    and no waiver of any breach of any term or provision of this Agreement
    shall be effective or binding unless made in writing and signed by the
    Party purporting to give the same and unless otherwise provided, shall be
    limited to the specific breach waived.

    12.4      CONFIDENTIALITY

              12.4.1    All information of the Parties exchanged will be
                        subject to the obligation of the Mutual Confidentiality
                        Agreement between the Parties attached as Annex 5 to
                        the Supply Agreement and will apply MUTATIS MUTANDIS to
                        this Agreement.


              12.4.2    The Parties acknowledge that there are business areas,
                        opportunities and initiatives in which their efforts
                        may be competitive and which are not intended to be
                        pursued under or subject to this Agreement.  The
                        Parties specifically covenant and agree that they will
                        not knowingly use, or allow to be used, each other's
                        proprietary information disclosed hereunder to gain an
                        unwarranted or unauthorized competitive advantage where
                        such circumstances may arise.

    12.5      APPLICABLE LAW AND LANGUAGES

    This Agreement shall be governed and interpreted in accordance with the
    laws in force in the Province of Quebec and the laws of Canada applicable
    therein.  The Parties have agreed that this Agreement and its annexes shall
    be written in the English language only.  Les parties ont convenu de
    rediger cette entente et ses annexes en langue anglaise seulement.

    12.6      ARBITRATION

    Any difference, controversy or claim arising out of or relating to this
    Agreement, its interpretation or performance, shall be considered a
    Dispute.  Any Dispute shall be subject to binding arbitration as provided
    hereafter.

              12.6.1    The Dispute shall diligently be notified by the
                        aggrieved Party to the other Party.  The notification
                        shall be deemed diligently made if communicated to the
                        other Party within five (5) business days of the
                        knowledge of the occurrence.

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 12
- --------------------------------------------------------------------------------

              12.6.2    Within (5) business days following such notification,
                        each Party shall prepare and disclose to the other
                        Party a brief on its position and within ten (10) days
                        thereafter the Parties shall prepare a common brief
                        which shall contain all points of agreement and all
                        points of disagreement in relation to the Dispute.

              12.6.3    Each Party shall then within five (5) days of
                        completing the common brief, submit the Dispute and the
                        common brief to their respective Chief Executives with
                        recommendation that the Chief Executives communicate
                        with each other within a reasonable period with a view
                        to resolving the Dispute.

              12.6.4    Notwithstanding paragraph 12.6.3 above, if no
                        resolution of the Dispute has occurred after 90 days
                        after the date on which a Party has submitted the
                        Dispute to his Chief Executive, then the Dispute shall
                        be submitted for resolution by binding arbitration
                        under the International Chamber of Commerce Rules of
                        Conciliation and Arbitration in effect on the date the
                        arbitration is submitted to the tribunal of
                        arbitration.  In such event:

                   12.6.4.1  a sole arbitrator shall be appointed in accordance
                             of said Rules, unless the Parties agree in a
                             particular case within thirty days of the
                             submission of the Dispute for resolution by
                             binding arbitration that the tribunal should
                             consist of more than one arbitrator.  Such
                             arbitrator(s) shall be knowledgeable in the field
                             of law involved;

                   12.6.4.2  the place of arbitration shall be Quebec, Province
                             of Quebec, Canada and the arbitration shall be
                             conducted in the English language;

                   12.6.4.3  responsibility for paying the costs of the
                             arbitration, including the costs incurred by the
                             Parties themselves in preparing and presenting
                             their cases, shall be apportioned by the tribunal
                             of arbitration;

                   12.6.4.4  the award shall be rendered in the English
                             language and shall state the reasons upon which it
                             is based;

                   12.6.4.5  the award shall be final and binding on the
                             Parties as from the date of it is made;

                   12.6.4.6  the award of the tribunal of arbitration may be
                             entered and enforced as a judgment against a Party
                             in any court of


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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 13
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                             competent jurisdiction or application may be made
                             to such court for a judicial acceptance of the
                             award and an order of enforcement, as the case may
                             be.

              12.6.5    Nothing in the foregoing shall prevent a Party from
                        initiating such conservatory measure proceedings as are
                        necessary to protect any arm's length third Party
                        rights.

              12.6.6    The fact that a dispute is brought to arbitration does
                        not relieve either Party from its obligation to fulfill
                        its commitments as provided by this Agreement.

    12.7      NOTICES

              12.7.1    All notices pertaining to this Agreement shall be in
                        writing and shall be sent to the respective following
                        postal addresses or facsimile numbers:

              12.7.2    For TELEGLOBE:

                        Teleglobe Canada Inc.
                        1000 de La Gauchetiere Street West
                        Montreal, Quebec
                        H3B 4X5

                        Business Contact:   Mr. Guy Coallier
                        Telephone:          (514) 868-8057
                        Facsimile:          (514) 868-7275

                        Technical contact:  Mr. Martin Demers
                        Telephone:          (514) 868-7747
                        Facsimile:          (514) 868-7473



              12.7.3    For ACE :

                        American Computer and Electronics Corporation
                        209 Perry Parkway
                        Gaithersburg, Maryland 20877
                        U.S.A.


                        Contract contact:   Mr. Thomas V. Russotto

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 14
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                        Technical contact:  Mr. Luis Freije
                        Telephone:          (301) 258-9850
                        Facsimile:          (301) 921-0434

              12.7.4    Method of Delivery

                        Any such notice delivered by:

                        a)   first class registered or certified airmail,
                             postage prepaid shall be deemed to have been
                             seventy-two (72) hours after posting;

                        b)   telefax or telex shall be deemed to have been
                             served upon the usual telefax or telex electronic
                             acknowledgment of receipt by the recipient's
                             telefax or telex machine; or

                        c)   by express courier service, service fee prepaid
                             shall be deemed to have been served the third
                             business day in the jurisdiction of the recipient.

    12.8      UNITED NATIONS CONVENTION

    The Parties intend to exclude the application of the United Nations
    Convention on Contract for the International Sale of Goods to this
    Agreement.  Accordingly, this Agreement shall not be subject to the United
    Nations Convention for the International Sale of Goods but rather this
    Agreement shall be governed by the internal rules in force in the Province
    of Quebec.

    12.9      GOOD FAITH

    The Parties acknowledge to one another that each respectively intends to
    perform its obligations as specified in this Agreement in good faith.

    12.10     PARTIES TO ACT REASONABLY

    The Parties agree to act reasonably in exercising any discretion, judgment,
    approval or extension of time which may be required to effect the purpose
    and intent of this Agreement.  Whenever the approval or consent of a Party
    is required under this Agreement, such consent shall not be unreasonably
    withheld or delayed.

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 15
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    12.11     WHOLE AGREEMENT

    The express terms and conditions of this Agreement agreed to by the
    Parties, are the only ones upon which any of their contractual rights and
    obligations are to be founded and, without limiting the generality of the
    foregoing, this Agreement supersedes all previous communications,
    negotiations and agreements, either written or oral, relating to the object
    of this Agreement.

    12.12     COUNTERPARTS

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

    12.13     ASSIGNMENT OF RIGHTS AND OBLIGATIONS

    Neither Party shall, without the consent of the other Party, sell, assign,
    transfer or dispose of its rights and obligations under this Agreement
    except to a successor, statutory assignee, subsidiary of such Party or a
    corporation controlling, or under the same control as such Party, in which
    case written notice shall be given in a timely manner by the Party making
    said sale, assignment, transfer or disposition.

    12.14     BENEFIT OF THE AGREEMENT

    This Agreement shall enure to the benefit of and be binding upon the
    respective successors and permitted assigns of the Parties hereto.

IN WITNESS WHEREOF the Parties have signed on the date mentioned above.

TELEGLOBE CANADA INC.                  AMERICAN COMPUTER AND
                                       ELECTRONICS CORPORATION

Per:   /s/ XXX                         Per:   /s/ Thomas V. Russotto
       --------------------------              --------------------------------
Title:  VICE PRESIDENT, NETWORK        Title:  VICE PRESIDENT
      --------------------------              --------------------------------

Per:   /s/ Guy Millette                Per:   /s/ Loretta L. Rivers
      --------------------------              --------------------------------

Title: ASSISTANT SECRETARY             Title: SECRETARY
       --------------------------              --------------------------------

<PAGE>


LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 16
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                                       ANNEX A

                             ACE'S PRODUCTS AND SOFTWARE


Network Element Data Server (NEDS-TM-)

    Function 01 - Local Collect

         01 -Capture Call Blocks
         02 -Capture and Format OM Data
         03 -Manage Local to Central Collect Real-time Communications
         04 -Build OM Trk TMS Report
         05 -Interface the Network Connections
         06 -Send Receive Switch Controls
         07 -Manage DCMS Redundancy
         08 -Archive and Clean Local data Store
         09 -Monitor DCMS Internals

    Function 09 - Interrogate, Navigate, Display Local Data

         01 -Access Local Data on DCMS (ADM tool)

Central Access Network Server (CANS-Registered Trademark-)

    Function 02 - Central Collect

         01 - Manage Central to Local Collect Real-time Communications
         02 - Capture Call Blocks - DMS-300
         04 - Capture Call Blocks - DMS-100

    Function 05 - Manage the Central Collection

         01 - Manage Central Collect to Repository Real-time Communications
         02 - Archive, backup  Clean Central Raw and Temporary Storage


    Function 10 - Interrogate, Navigate, Display Central Collect Data

         01 -Access Central Collect Data on Central Collect System (ADM tool)

<PAGE>

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AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 17
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                                 ANNEX A - CONTINUED

                             ACE'S PRODUCTS AND SOFTWARE


Traffic Analysis & Performance Surveillance (TAPS-TM-)


    Function 06 - Managing the Repository

         01 -Manage Repository to Central Collect Real-time Communications
         03 -Receive and Store Raw Information (Call Blocks and OM)
         04 -Manage Backup and Archive of Repository Information

    Function 11- Interrogate, Navigate, Display Repository Data

         01 -Access All Repository (Call) Data (ADM tool)
         03 -Manage SQL Interrogation Data Service on Traffic Indicators, Alarm

    Function 13 - Piloting the system

         01 -Manage RETR and ACE Specific Control Tables

    Function 15 - Manage RETR External Data Tables in RETR

         01 -Manage City/Zone Information
         02 -Manage Call Basic Service Identification Information


<PAGE>
LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 18
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                                       ANNEX B

                                SOFTWARE ENHANCEMENTS


Traffic Analysis & Performance Surveillance (TAPS-TM-)


    Function 02 - Central Collect

         03- Build Call Detail and Specific - DMS-300
         05- Build Call Detail and Specific - DMS-100

    Function 03 - Build the Call

         01 -Assemble Call Details(Matching) - General Process
         02 -Assemble Call Details (Matching) - Service Specific Process
         03 -Validate and Augment the Call
         04 -Augment the Call Detail (Prior to Matching)

    Function 04 - Generate Alarms (5 minute indicators)

         01 -Compute 5m Indicators from OM
         02 -Compare 5m Indicators Against Thresholds

    Function 06 - Managing the Repository

         02 -Store Call and 5m Traffic Indicators
         05 -Summarize and Archive Traffic Indicators
         06 -Generate NewCDR, NewEBAF, GDSCall

    Function 07 - Compute Indicators, Generate Alarms (1 hour indicators)

         01 -Compute 1h Indicators from Call, Call Detail, Call Specific
         02 -Compare 1h Indicators Against Thresholds
         03 -Register Alarms
         04 -Verify Call, Call Detail, Call Specific Against Simple Fraud
         Patterns
         05 -Produce Daily, Weekly, Monthly Reports from Indicators/OM/Call
         Information

    Function 11 - Interrogate, Navigate, Display Repository Data

         02 -Access Traffic, Indicators, and Alarms

<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 19
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                                 ANNEX B - CONTINUED

                                SOFTWARE ENHANCEMENTS


    Function 12 - Managing the Alarms

         01 -Manage Alarm Thresholds
         02 -Manage State of Alarms
         03 -Archive and Clean Alarms

    Function 14 - Re-process Call in Error

         01 -Display, Suggest and Fix Unmatched Calls
         02 -Correct Augmented Calls
         03 -Re-Compute Indicators
         04 -Re-Run Reports
         05 -ReSend NewCDRs, NewEBAF, GDSCalls

    Function 16 - Data Conversion

         01 -Convert and Load 3 Months of data from the current system into the
         RETR Database

<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 20
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                                      ANNEX 'C'

                                          TO

                        SOFTWARE DEVELOPMENT LICENSE AGREEMENT

                                       BETWEEN

                                TELEGLOBE CANADA, INC.

                                         AND

                    AMERICAN COMPUTER AND ELECTRONICS CORPORATION

                    END USER OBJECT CODE COMPUTER PROGRAM LICENSE

The following sets forth the standard object code computer license which
TELEGLOBE incorporates into its INTERNATIONAL TELECOMMUNICATIONS CARRIERS
PURCHASE AGREEMENTS.  It is understood by the Parties that substantially similar
terms and conditions may be utilized in lieu of the following.

1.  SCOPE

    Pursuant to the above-identified Agreement (I.E. THE INTERNATIONAL
    TELECOMMUNICATIONS CARRIERS PURCHASE AGREEMENTS), object-code computer
    programs for the RETR and other TELEGLOBE supplied equipment will be
    delivered by TELEGLOBE to the Customer (I.e.  the end user) on a licensed
    basis in printed form or in any of several possible machine-readable forms,
    including, but not limited to, magnetic tape or disk, read-only memory
    (ROM) device, programmable read-only memory (PROM) device, electronically
    programmable read-only (EPROM) device and electronically erasable
    programmable read only memory (EEPROM) device.  Customer shall then become
    a licensee with respect to such computer programs.  Delivery of such
    programs by TELEGLOBE and acceptance of same by Customer shall be made only
    under the conditions set forth below, unless otherwise agreed in writing by
    TELEGLOBE.

2.  COMPUTER PROGRAMS REMAIN TELEGLOBE PROPERTY

    The original of any computer program delivered hereunder and any copies
    made by Customer, in whole or in part, shall remain the property of
    TELEGLOBE or its vendor as appropriate.

<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 21
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                                 ANNEX 'C'- CONTINUED

3.  SOFTWARE LICENSE

    Concurrent with execution of the Agreement TELEGLOBE grants to the customer
    a royalty-free, non-exclusive and non-transferable license under
    TELEGLOBE's copyright to use each computer program delivered to Customer
    hereunder (hereinafter called "Licensed Program") in accordance with terms
    and conditions set forth herein.  The licensing fee for the Licensed
    Program is included in the price of the Initial RETR System.  Each such
    license granted authorizes Customer to use the Licensed Program only in
    machine-readable form and only in a single unit of TELEGLOBE-supplied
    equipment.  Such license may not be assigned, sublicensed or otherwise
    transferred by Customer.  No right to copy a Licensed Program, in whole or
    in part, is granted except as hereinafter expressly provided.


4.  RIGHT TO COPY.  PROTECTION AND SECURITY

    4.1  Any Licensed Program provided hereunder may be copied (for back-up
         purposes only) in whole or in part, in printed or machine-readable
         form for Customer's internal use only, provided, however, that no more
         than two (2) printed copies and two (2) machine-readable copies will
         be in existence under a license at any one time without prior written
         consent of TELEGLOBE, other than copies resident in Customer's
         equipment.

    4.2  With reference to any copyright notice of TELEGLOBE and its vendors
         with a Licensed Program delivered hereunder, Customer agrees to
         include the same on all copies it makes in whole or in part.
         TELEGLOBE and its vendors' copyright notices may appear in any of
         several forms, including machine-readable form.  Use of a copyright
         notice on a Licensed Program does not imply that such has been
         published or otherwise made generally available to the public.

    4.3  Customer agrees to keep confidential and not provide or otherwise make
         available in any form any Licensed Program delivered to Customer, or
         any portion thereof, to any person other than employee of Customer, or
         TELEGLOBE.

5.  TERM

    Any Licenses granted hereunder may be terminated by Customer upon one (1)
    month's prior written notice.  TELEGLOBE may terminate any such license if
    Customer is in default of any of the terms and conditions of the agreement
    or

<PAGE>

LICENSE AGREEMENT BETWEEN TELEGLOBE CANADA INC.
AND AMERICAN COMPUTER ELECTRONICS CORPORATION                           PAGE 22
- --------------------------------------------------------------------------------

                                ANNEX 'C' - CONTINUED


    Exhibits, and such termination shall be effective if Customer fails to
    correct such default within ten (10) days after written notice thereof by
    TELEGLOBE.  The obligation of Subsection 4.3 herein shall survive
    termination of any such license.

6.  TERMINATION

    Within one (1) month after termination of any license, Customer will
    furnish to TELEGLOBE a document certifying with respect to each Licensed
    Program that, through its best efforts and the best of its knowledge, the
    original and all copies in whole or in part, in any form, including any
    copy in an updated work, have been returned to TELEGLOBE or destroyed;
    except that, with prior written consent from TELEGLOBE, Customer may retain
    one (1) copy for archival purposes only.

7.  LICENSE RIGHTS

    Nothing contained herein shall be deemed to grant, either directly or by
    implication, estoppel, or otherwise, any license under any patents or
    patent applications of TELEGLOBE except that Customer shall have a non-
    exclusive, royalty-free license under TELEGLOBE or its vendors' patents and
    patent applications to use, in TELEGLOBE-supplied equipment only, each copy
    of a Licensed Program supplied hereunder, when such license is implied or
    otherwise arises by operation of law by virtue of the purchase of such
    copies from TELEGLOBE.

    Rights in programs or operating systems of others, if any, are further
    limited by their license agreements that are hereby incorporated by
    reference thereto and made a part hereof if fully set forth herein.
    Customer agrees to abide thereby.  Notwithstanding anything to the contrary
    in other agreements, purchase orders or order acknowledgments, this Annex
    "C" sets forth the entire understanding and obligations regarding Licensed
    Programs implied or expressed.

<PAGE>


    (Annexes D to F hereof are confidential and such confidential portions have
    been omitted and filed separately with the Commission.)


<PAGE>

                                                                   EXHIBIT 10.7

                                 SUBCONTRACT

                               No. 95-1350-01


This Subcontract is entered into by and between ANSTEC, Inc., a Virginia 
Corporation, with its principal offices located at 10530 Rosehaven Street, 
Suite 600, Fairfax, VA 22030 (hereinafter referred to as "ANSTEC"), and 
American Computer and Electronics Corporation, with offices located at 209 
Perry Parkway, Gaithersburg, MD 20877 (hereinafter referred to as the 
"Subcontractor").

WHEREAS, ANSTEC has entered into Contract No. Fl 1624-94-R-0001 ("Prime 
Contract") with the Department of the Air Force, Communications System 
Program Office ("Customer");

WHEREAS, ANSTEC desires Subcontractor to perform a portion of the work to be 
provided by the ANSTEC to the Customer under the Prime Contract, and 
Subcontractor is willing to perform such work;

NOW THEREFORE, in consideration of mutual promises, covenants, and agreements 
herein set forth, the Parties agree that the Subcontractor shall furnish and 
deliver to ANSTEC all of the supplies, and perform all of the services set 
forth in the Schedule (Sections B through 1), for the consideration stated 
therein.  The rights and obligations of the Parties to this Subcontract shall 
be subject to and governed by the Schedule, the General Provisions of 
Purchase and other documents or specifications attached hereto or Referenced 
herein.

This Subcontract shall not be varied in its terms or conditions by any oral 
Agreement or representation, or otherwise than by an instrument in writing of 
even or subsequent date thereto, unless properly executed by both 
Subcontractor and ANSTEC.

The section titles used herein are for convenience only and shall in no way 
be construed as part of this Subcontract or as an indication of the meaning 
of the particular section.

                         SECTION A - CUSTOMER APPROVAL

ANSTEC and Subcontractor agree to enter into such good faith negotiations as 
may be necessary to obtain Customer's approval of this Subcontract, if such 
approval is required under the Prime Contract.  This Subcontract shall not be 
binding until ANSTEC has received necessary approval from the Customer in 
writing.

<PAGE>

                    SECTION B - SUPPLIES/SERVICE AND PRICES

ANSTEC shall have the primary responsibility for performing work pursuant to 
the Prime Contract.  Subcontractor shall provide the necessary personnel, 
facilities, equipment, materials, data supplies and/or services to perform 
its portion of the work agreed to hereunder.  Subcontractor shall also 
provide such data and support to ANSTEC as may be required to price and/or 
negotiate any tasks or subtasks under the Prime Contract that pertains to 
work to be performed by the Subcontractor.

B-1 SUPPLIES/SERVICES

Supplies/Services and Reports described in Section D and in the Statement of 
Work and Specifications (Attachment A) as determined by or specified in 
individual Delivery Orders issued to the Subcontractor by ANSTEC.

B-2 PRICES

Prices of individual Contract Line Item Numbers (CLINS) and Subline Item 
Numbers (SLINS) are contained in Attachment B, Supplies/Services Price 
Schedule.

B-3 ALLOTMENT OF FUNDS

The Subcontractor shall not perform work or incur costs in excess of the 
allotted amount and ANSTEC shall not be obligated to pay for work in excess 
of the maximum dollar amount stipulated in the individual Delivery Order.

B-4 TRAVEL COSTS (COST REIMBURSEMENT ITEMS ONLY):

ANSTEC will reimburse the Subcontractor for reasonable actual costs for 
lodging, meals, and incidental expenses not to exceed the rates, set forth in 
the Federal and Joint Travel Regulations.  Allowable airfare costs will not 
exceed standard coach rates.  Private aircraft may be used for travel 
provided such costs do not exceed standard coach rates.  All travel expenses 
shall be paid in accordance with FAR 31.20546. Subcontractor will submit a 
copy of the travel voucher and copies of such receipts will be provided by 
the to ANSTEC if requested.  All original travel receipts will be retained by 
the Subcontractor.

                     SECTION C - DESCRIPTION/SPECIFICATION

C-1 STATEMENT OF WORK

Subcontractor shall perform those services generally described in Attachment 
A.  Subcontractor services shall be ordered pursuant to Delivery Order(s) 
("DO") issued by 

                                      -2-

<PAGE>

ANSTEC, and all. such -services shall be performed in accordance with the 
specific terms and conditions of each such DO.

A.  Work will be performed under this Subcontract only in pursuance of written 
DO approved by ANSTEC's Subcontract Administrator.

B.  ANSTEC's Project Director after preparing a draft DO, will contact the 
Subcontractor to discuss the technical aspects, period of performance, and 
allocation of level of effort and other resources of the DO.  Estimated cost 
shall be based on the prices contained in Attachment B for the individual 
SLINS.  Supporting information shall be provided in a mutually agreeable 
format which details the price by SLIN.

C.  In the event any work under the Prime Contract is terminated in writing by 
the Principal Contracting Officer (PCO) prior to completion of work, ANSTEC 
may terminate, by written notice to the Subcontractor of the effective date 
and conditions of the termination, any DO or part of any DO hereunder which 
requires work terminated by the PCO.  Termination costs, as defined by FAR 
52.249-2, will be allowable under the Subcontract.

D.  Subcontractor shall have the right of first refusal over any other 
subcontractor, to submit a technical and/or cost proposal for all options, 
modifications or additional purchases relative to this Subcontract.  
Subcontractor shall submit responses to ANSTEC within five (5) business days 
after receipt of each request from ANSTEC.

C-2 REPORTS

The Subcontractor shall deliver to ANSTEC all reports specified in the 
individual DO.  These reports will comply with the requirements of the 
Statement of Work and the applicable Contract Data Requirements List (CDRL) 
format.

The Subcontractor shall deliver one copy of each report to the Project 
Director specified in Section H- I and one copy to the Subcontract 
Administrator specified in Section H-3.

                    SECTION D - PACKAGING/MARKING/DELIVERY

D-I STANDARD PRACTICE FOR COMMERCIAL PACKAGING

Unless otherwise specified in the applicable Specification(s), DO(s), and/or 
Statement of Work, packaging and packing of all item for delivery shall be in 
accordance with standard commercial practices.  Each package shall be marked 
with the contract number, delivery order number, and CLIN/SLIN number.

                                      -3-

<PAGE>

D-2 DELIVERY POINT

The delivery point for all items to be delivered by Subcontractor hereunder 
shall be F.O.B. destination and unless the Subcontractor is notified to the 
contrary shall be marked for delivery to the ANSTEC addressed as follows:

    ANSTEC, Inc.
    ATTN:  Randy Billingsley
    10530 Rosehaven Street, Suite 600
    Fairfax, VA 22030

                     SECTION E - INSPECTION AND ACCEPTANCE

A.  Notwithstanding any prior preliminary inspection and/or acceptance, final 
inspection and acceptance of all supplies and services shall be made by 
ANSTEC, Inc., 10530 Rosehaven Street, Suite 600, Fairfax, VA 22030 unless 
otherwise specified in the applicable DO.  Final acceptance of any supplies 
or services shall not be deemed a waiver of any guarantee contained herein.

B.  Acceptance of the functional test shall be, at source, by a designated 
Government representative upon the successful completion of the functional 
test specified in the acceptance test procedures.

C.  Acceptance of services and materials shall be performed, at destination, 
by a designated Government representative, upon the successful completion of 
all required testing and the resolution of all outstanding discrepancies.  
Acceptance shall cover those CLINs/SLINs identified in each DO and shall be 
performed in total, one time, for each site.

D.  Quality Assurance (QA,) documentation of Subcontractor performed 
inspections and tests shall be made available for ANSTEC's and the 
Government's review at the locations where the inspections and tests are 
performed.

                                      -4-

<PAGE>

                        SECTION F- DELIVERIES OR PERFORMANCE


F-1 CLAUSES INCORPORATED BY REFERENCE

NOTICE: The following contract clause is hereby incorporated by reference:

FAR SOURCE                  TITLE                     DATE

52.247-34                   F.O.B. DESTINATION        NOV 91


F-2 TERM AND PLACE OF PERFORMANCE

The term of this Subcontract shall be from June 23, 1995 through September 
30, 1995.  The Subcontract term will be extended for up to nine (9) 
additional twelve-month periods upon ANSTEC's prior written notice of each 
such twelve-month extension period; provided, however, that this Subcontract 
is not otherwise terminated pursuant to the Termination clause herein.  
ANSTEC shall provide Subcontractor thirty (30) days notice of its intent to 
extend Subcontract.

F-3 NOTICE OF DELAYS

In the event Subcontractor encounters difficulty in meeting performance 
requirements, or can not comply with Delivery Order schedules or completion 
dates, or if Subcontractor has knowledge of any actual or potential event 
that is delaying or threatening to delay delivery of goods, or performance of 
the services under this Subcontract, Subcontractor shall notify ANSTEC in 
writing identifying what work may be delayed, the length of delay and 
corrective actions taken and a revised delivery schedule or completion date.

F-4 SUBCONTRACT DELIVERABLES

A.  During the course of performance under this Subcontract, Subcontractor may 
be furnished with Government Furnished Information ("GFI") or Government 
Furnished Equipment ("GFE").  All GFI and GFE used by the Subcontractor for 
the performance of tasks applicable to this Subcontract shall be returned to 
ANSTEC at the termination of the Subcontract or any DO issued pursuant to 
this Subcontract.

B.  As specified and described in DOs issued by ANSTEC to the Subcontractor, 
the Subcontractor may be required to submit to ANSTEC reports, memoranda, 
analyses, studies, specifications, plans, briefing materials, and other 
documentation.  All deliverables and services provided by the Subcontractor 
shall be subject to inspection and approval by ANSTEC and the Government, and 
all deliverables shall become the property of the Government and will be 
retained by the Government with all rights and 

                                      -5-

<PAGE>

privileges as provided in the Prime Contract.  Copies of all Subcontractor 
deliverables shall be retained by ANSTEC and the Subcontractor.

C.  Any products, materials or methodologies proprietary to the Subcontractor 
and used in the preparation of Subcontract deliverables shall, to the extent 
permitted under the technical data rights provisions in the Prime Contract 
and incorporated by reference in this Subcontract, remain the property of the 
Subcontractor provided, however, that in no event shall ANSTEC obtain any 
rights in such proprietary products, materials or methodologies except 
pursuant to a separate written agreement between the parties hereto.

F-5 TECHNICAL DATA AND COMPUTER SOFTWARE DELIVERY

It is understood that technical data and computer software will be 
individually packed and mailed (F.O.B. Destination) to each address 
designated in the DO.  The practice of bulk packing and shipment to any one 
addressee of technical data and computer software destined for a number of 
other addressees is prohibited. (Reference AFARS 52.7030)

F-6 PLACEMENT OF ORDERS

A.  Delivery Orders issued under this subcontract will be within the scope of 
work defined by the Statement of Work ASQM 90015 (Attachment A).  In the 
event the Subcontractor receives a DO considered to be outside the scope of 
work of this Subcontract, he is required to notify ANSTEC's Subcontract 
Administrator, in writing, within three (3) days after receipt of the order.

B.  All DOs are subject to the terms and conditions of this Subcontract.  In 
the event of a conflict between a delivery order and this Subcontract, the 
Subcontract shall control.

                  SECTION G - SUBCONTRACT ADMINISTRATION DATA

G-1 ANSTEC PROJECT DIRECTOR

A.  The Project Director for this Subcontract is William Wickes, who is the 
point of contact for all technical matters under this Subcontract.  His 
telephone number is 703-591-4000.

B.  The Project Director is authorized to issue Technical directions under the 
Subcontract on behalf of ANSTEC.  This direction may include instruction to 
the Subcontractor which provides details or otherwise completes the general 
scope of the work set forth in Section D. This direction may not constitute 
new assignments of work or changes, modifications, or amendments of such a 
nature as to justify an adjustment in the Subcontract terms, conditions or 
price.

                                      -6-

<PAGE>

G-2 SUBCONTRACTOR PROJECT DIRECTOR

The Subcontractor Project Director for this Subcontract is Ben Gray who is 
the Subcontractor point of contact for all technical matters under this 
Subcontract.  His telephone number is (301) 258-9850.

G-3 CONTRACTUAL NOTIFICATIONS

All correspondence or notifications involving contractual or financial 
matters under this Subcontract shall be addressed as follows:

    ANSTEC, Inc.                   American Computer and Electronics Corporation
    ATTN:  Sumeet Shrivastava      ATTN:  Joe Dorr
    10530 Rosehaven Street,        209 Perry Parkway
    Suite 600                      Gaithersburg, MD 20877
    Fairfax, VA  22030             (301) 258-9850
    (703) 591-4000

G-4 CONTRACTING-OFFICIALS

Any change or modification to the terms, conditions, delivery dates, or price 
shall not be binding on either party unless the appropriate contractual 
document has been signed by a duly authorized official of both parties.

G-5 SUBMISSION OF INVOICES

A.  Subcontractor shall submit, upon delivery of a SLIN, in sample format set 
forth in Attachment D, one (1) original invoice and two (2) copies to:

    ANSTEC, Inc.
    Attn: Contracts
    10530 Rosehaven Street, Suite 600
    Fairfax, VA 22030

B.  Each invoice submitted by the Subcontractor shall contain the following 
information:

    1.  Subcontract Number, Delivery Order Number, and invoice number.

    2.  Period of performance for which the invoice is submitted.

    3.  A breakdown of costs by SLIN. All travel costs shall identify 
destination and duration of trip.

                                      -7-

<PAGE>

C.  The final invoice for each Delivery Order number shall be clearly 
designated as the "Completion Invoice".

D.  All Subcontractor invoices shall be paid by ANSTEC within five (5) days of 
ANSTEC's receipt of payment from the Government.  A "correct" invoice is one 
which properly identifies all the information required by this Section H-5.  
In the event the non-acceptance applies to a portion of the invoice, the 
remaining portion shall be paid as provided herein.

E.  ANSTEC shall use its best efforts to process all Subcontractors invoices 
promptly, by forwarding to the Government completed Form DD250 within five 
(5) days upon receipt of "correct" invoice by ANSTEC.  ANSTEC shall notify 
Subcontractor of any deficient invoices within five (5) days of receipt of 
said invoices.  Subcontractor will promptly correct said invoices. ANSTEC 
shall submit to the Government invoices within five (5) days following 
receipt of signed and executed Form DD250 from the Government.

F.  If ANSTEC fails to process a Subcontractor invoice, or fails to notify 
Subcontractor of invoice deficiencies per the terms of Section G-5, paragraph 
E, or fails to process Form DD250 as required under paragraph E, ANSTEC shall 
pay Subcontractor within 60 days of receipt of the invoice, regardless of any 
deficiencies therein.   Notwithstanding the terms of this paragraph, and 
except in the case of failure to notify Subcontractor of invoice 
deficiencies, the payment terms in this paragraph shall not go into effect 
until six months after effective date of this Subcontract.

G.  If ANSTEC negotiates more favorable payment terms (i.e. milestone payments 
or progress payments), Subcontractor shall participate on a pro-rata basis in 
the favorable payment terms, and the invoicing and payment requirements 
imposed upon the parties by this Section shall apply to the milestone or 
progress payments.  Subcontractor shall be consulted with prior to final 
negotiations with the Government with respect to more favorable payment 
terms.  ANSTEC agrees to pay Subcontractor interest for late payment of 
invoices on a prorated basis, based on Subcontractor's portion of invoice in 
relationship to the total invoice to Customer, when ANSTEC receives late 
payment interest from Customer, at a rate equal to the rate paid to ANSTEC by 
Customer.  ANSTEC shall promptly communicate to Customer any price reduction, 
discount or incentive offered in writing to ANSTEC by Subcontractor, so long 
as such reduction, discount or incentive does not further reduce ANSTEC's 
proceeds under the Prime Contract.

                                      -8-

<PAGE>

                        SECTION H - SPECIAL PROVISIONS

H-1 PROPRIETARY INFORMATION

A.  The parties acknowledge that in the performance of the Project they may 
require access to and/or be in possession of proprietary information of the 
other.  "Proprietary Information" shall mean information regarded by the 
disclosing party as confidential, including information relating to its past, 
present or future research, development or business affairs and any 
proprietary products, materials or methodologies.  Other than the limited 
right to use provided under this Subcontract, no title or license shall be 
granted either expressly, or by implication, or estoppel to the receiving 
party under the patent, trademark, copyright or trade secret owned or 
controlled by the Parties.  Upon termination or expiration of this 
Subcontract, the Parties shall promptly return all Proprietary Information 
received during the performance the work hereunder

B.  Each party shall hold in confidence, in the same manner as it holds its 
own proprietary information of like kind, all proprietary information of 
another party to which it may have access hereunder.  Access to proprietary 
information shall be restricted to company personnel with a need to know and 
engaged in a permitted use of such proprietary information.

C.  The foregoing shall not prohibit or limit any party's use of information, 
including but not limited to ideas, concepts, know-how, techniques and 
methodologies, (a) previously known to it; (b) independently developed by it; 
(c) acquired by it from a third party without continuing restriction on use; 
or (d) which is, or becomes, publicly available through no breach by it of 
this Subcontract

D.  Proprietary information may only be disclosed pursuant to the operation 
of law, provided the other Party is notified in writing prior to disclosure 
of the materials.

E.  This Section H-I shall survive termination of this Subcontract for any 
reason.

H-2 SECURITY REQUIREMENTS

Subcontract or personnel visiting any Government facility in conjunction with 
this Subcontract shall be subject to the standards of conduct applicable to 
Government employees.  Subcontractor visits shall be by appointment only and 
shall be scheduled with ANSTEC in advance of such visits.  Special site 
specific regulations regarding access to classified or sensitive materials, 
computer facilities access, issue of security badges, etc. will be provided 
by ANSTEC at the time of any applicable DO.

                                      -9-

<PAGE>

H-3 CHANGES

A.  ANSTEC may at any time modify a DO as required during the course of this 
Subcontract effort.  Changes may be issued unilaterally by ANSTEC only 
pursuant to change orders or modifications issued by the Government to 
ANSTEC, or in response to a written request for a change from the 
Subcontractor in no event shall the Subcontractor perform any modified or 
changed work without the prior written authorization from the ANSTEC.

B.  If any such change causes an increase or decrease in the cost of, or the 
time required for, performance of any work or services hereunder, an 
equitable adjustment shall be made in the estimated cost or delivery 
schedule, or both, and the DO shall be modified in writing accordingly.  Any 
claim by the Subcontractor for an adjustment pursuant to a change order shall 
be asserted in writing within thirty (30) calendar days of receipt by the 
Subcontractor of the notification of change.  Failure to submit any claim 
within the 30-day period shall constitute a waiver of such claim unless the 
ANSTEC has granted in writing an extension of time for the submission of the 
claim.  Failure of ANSTEC and the Subcontractor to agree to the amount of an 
equitable adjustment shall be a dispute within the provisions of the 
"Disputes" provision in this Subcontract.

C.  Nothing in this Section I-3 shall excuse the Subcontractor from 
proceeding with its performance under a DO or any change thereunder issued 
pursuant to this section.

H-4 TERMINATION

A.  Default.  Failure to comply with any material term or condition under 
this Subcontract shall entitle ANSTEC to give written notice to Subcontractor 
requiring Subcontractor to cure such default within five (50 days of the date 
of the default notice ("Cure Period").  ANSTEC shall be entitled, in addition 
to any other rights available hereunder or otherwise by law, to terminate 
this Subcontract effective immediately by giving written notice to 
Subcontractor.  If Subcontractor determines that such default cannot be 
adequately cured within the Cure Period, Subcontractor shall provide ANSTEC 
written notice, within three (3) days of the date of the default notice, 
specifying why such default cannot be cured within the Cure Period.  
Subcontractor shall also specify what steps have been taken and will be 
pursued to cure such default and what date the default shall be cured, which 
shall not be more than fifteen (15) days after the Cure Period.  ANSTEC shall 
have the sole discretion to determine if such additional time is required to 
cure such default.  A material ten-n or condition shall include, but not be 
limited to failure to meet delivery schedules, actual or likely inability of 
Subcontractor to pays its employees any wages or benefits required by law; 
the institution of proceedings, voluntary or involuntary, under federal or 
state bankruptcy laws; a general assignment for the benefit of creditors; the 
appointment of a receiver; the liquidation of its assets; or Subcontractor's 
experience of substantial financial difficulties which, in the sole opinion 
of ANSTEC, make Subcontractor's continued ability to perform hereunder 
unlikely.  If 

                                      -10-

<PAGE>

ANSTEC terminates this Subcontract by reason of Subcontractor's default, 
Subcontractor shall be liable for all costs, including reasonable 
administrative costs, incurred by ANSTEC in performing or procuring 
substitute services if such costs exceed the payment that would have been 
made to Subcontractor for comparable work if this Subcontract had not been 
terminated.  ANSTEC shall use its best efforts to minimize such costs on 
behalf of the Subcontractor.

B.  Termination by Customer.  ANSTEC may terminate this Subcontract 
immediately, without penalty or liability to Subcontractor, by providing 
written notice to Subcontractor if the Prime Contract is terminated by 
Customer for any reason.  Upon receipt of the notice to terminate, the 
Subcontractor shall thereupon immediately cease work to the extent required 
and shall turn over to ANSTEC any work completed and any work in progress, 
including designs, drawings, specifications, plans, lists, or other material 
produced in connection with the performance of services hereunder that has 
been paid for by ANSTEC.  The Subcontractor shall take all necessary steps to 
minimize reasonable and equitable close-out costs and termination costs.  The 
FAR Termination Clauses set forth in the General Provisions shall govern the 
actions of the parties in any termination.

C.  Immediate Termination by ANSTEC.  Notwithstanding the terms and 
conditions set forth in the Default section above and in the event any breach 
or default of this Subcontract, which in all probability, will result in a 
violation of any federal, state or local statute or regulation, ANSTEC 
reserves the right to terminate this Subcontract immediately, without benefit 
of any Cure Period, upon providing Subcontractor with written notification of 
such termination.

H-5 DISPUTES INVOLVING THE GOVERNMENT

A.  In the event of a disagreement or dispute regarding any matter covered by 
this Subcontract, which is not disposed of by mutual Agreement, the parties 
hereto shall pursue those necessary corporate and/or legal remedies as may be 
appropriate to resolve any dispute.  Legal remedies may include pursuit of 
the dispute by either party in a court of competent jurisdiction.  In this 
event, each party shall be responsible for all costs they incur as a result 
of such action or as ordered otherwise by a court of competent jurisdiction.  
To the extent this disagreement or dispute also required continued 
performance under the Prime Contract, Subcontractor agrees to continue 
performance on the disputed matter to the same extent that ANSTEC is required 
to continue performance.

B.  Not withstanding any other provisions herein, any decision of the 
Contracting Officer under the Prime Contract which binds the Prime shall also 
bind the Subcontractor to the extent that it relates to this Subcontract, 
provided ANSTEC shall have notified the Subcontractor of such decision, and 
if requested by the Subcontractor shall have appealed the decision in 
accordance with the "Disputes" clause of the Prime Contract and taken any 
further action as may be required under this clause.

                                      -11-

<PAGE>

C.  Any decision or appeal, or any other decision of the Government under the 
Prime Contract which cannot be appealed under the "Disputes" clause of the 
Prime Contract, if binding on the ANSTEC shall also bind the Subcontractor to 
the extent that it relates to this Subcontract, provided ANSTEC shall have 
promptly notified the Subcontractor of such decision and, if requested by 
Subcontractor, shall have brought suit or filed claim, as appropriate against 
the Government.  A final judgment in any such suit or final disposition of 
such claim shall be conclusive upon ANSTEC and the Subcontractor.

D.  For any action brought by ANSTEC on behalf of the Subcontractor pursuant 
to this clause, the Subcontractor agrees to indemnify and hold ANSTEC 
harmless from all costs and expenses incurred by the ANSTEC in prosecuting 
any such appeal initiated by the ANSTEC at the Subcontractor's request.  All 
costs and expenses incurred by ANSTEC shall be paid by the Subcontractor and 
shall not be reimbursed as a cost under the Subcontract, unless recovered by 
ANSTEC under the Prime Contract or as part of an award of damages to ANSTEC 
based on such claim.

E.  If the Board of Contract Appeals ("Board") issues a decision affecting any 
question, claim or dispute with respect to this Subcontract, such decision 
shall be conclusive and binding on both Parties.

H-6 DISPUTES NOT INVOLVING, THE GOVERNMENT

Any dispute or controversy between ANSTEC and the Subcontractor which 
concerns only ANSTEC and the Subcontractor or which does not involve a final 
decision of the Government contracting officer, and which cannot be resolved 
by mutual agreement of the parties hereto, shall be settled by arbitration in 
accordance with the commercial rules then in effect of the American 
Arbitration Association.  The place of such arbitration shall be Washington, 
D.C. Each party shall select one arbitrator and the two arbitrators so 
selected shall select the third arbitrator.  The arbitrators shall be 
knowledgeable in Government procurement matters related to the types of 
services and supplies provided pursuant to this Subcontract.  The arbitration 
decision and award shall be binding on the parties, and judgment thereon may 
be entered in any court of competent jurisdiction.

H-7 RELATIONSHIP OF THE PARTIES

A.  The relationship of the parties to this Subcontract Agreement is that of 
a prime contractor and a subcontractor, and nothing herein shall be deemed or 
construed to create a joint venture, partnership or agency relationship 
between the parties for any purpose.  It is further understood that each 
party is an independent contractor and as such shall have no authority to 
bind or commit the other.

                                      -12-

<PAGE>

B.  Any decisions relating to or impacting the performance of services by the 
Subcontractor in connection with the Project will be made in consultation 
with the Subcontractor's Program Manager.

C.  Subcontractor personnel are expressly prohibited from communicating with 
Government personnel with respect to any aspect of the Project or the 
Subcontractor's performance under this Subcontract that may result in a 
change in Prime Contract price or scope of work without the prior consent of 
ANSTEC.  Subcontractor may discuss technical issues that will not impact 
price or scope of work.  Any communication between the Government and 
Subcontractor personnel not in the presence of the ANSTEC Project Director or 
other authorized representative shall be reported promptly to the ANSTEC 
Project Director.

D.  Subcontractor personnel will participate in Project meetings and 
discussions as reasonably requested by the ANSTEC's Project Director, and 
shall have the right to attend and receive reasonable prior notice when the 
meeting or discussion will address areas of work to be performed by the 
Subcontractor.

E.  ANSTEC will apprise Subcontractor of all issues, recommendations and 
decisions relating to the Project as ANSTEC may deem necessary and 
appropriate for purposes of Subcontractor's performance under this 
Subcontract Agreement.

F.  Nothing in this Subcontract shall grant to either party any right to make 
commitments of any kind for or on behalf of the other party without prior 
written consent of the other party.

H 8 WARRANTY

A.  Subcontractor warrants that the services provided under this Subcontract 
will be performed in a professional and workmanlike manner in accordance with 
applicable professional standards, and shall re-perform any work not in 
compliance with the requirements of this Subcontract or any DO issued 
hereunder.

B.  Each party warrants that it is authorized to disclose to the other any 
information which it discloses to the other under this Subcontract, and 
agrees to indemnify and hold harmless the other in the event of its breach of 
this warranty.

C.  The Subcontractor agrees to extend to this Subcontract any Commercial 
Warranty normally offered for this equipment.  ANSTEC acceptance of the 
Commercial Warranty does not limit ANSTEC's rights under any other term or 
condition in this Subcontract.  The Subcontractor shall extend all warranties 
to at least one year from acceptance at each site at no additional cost to 
ANSTEC or the Government.

                                      -13-

<PAGE>

H-9 INSURANCE

Pursuant to FAR 52.228-05, "Insurance - Work on a Government Installation" 
the Subcontractor shall carry insurance of the type and in the minimum 
amounts set forth in FAR 28.307-2.

H-10 INDEMNIFICATION

A.  The employees of this Subcontractor and ANSTEC engaged in performance 
under this Subcontract shall at all times be deemed to be performing as 
independent contractors and not as agents or employees of the other and the 
acts and omissions of such employees shall be deemed to be those of their 
respective employers.  Subcontractor shall indemnify and hold harmless ANSTEC 
and its employees from any penalty, liability, damage, expenses or 
forfeiture, including court costs and reasonable attorney fees arising out of 
or incidental to or in any way resulting from the acts or omissions of 
Subcontractor or Subcontractor's employees while acting within the scope of 
their employment.  Both parties shall defend, indemnify and hold harmless the 
other party from any and all liability, claim and expense of whatever kind 
and nature for injury or death to any person or persons and for loss of or 
damage to or arising out of either parties occupancy, use, operation, or 
performance of work hereunder, resulting in whole or in part from the acts of 
omissions of either party or its employees.

B.  Subcontractor shall maintain employer's liability, comprehensive general 
liability, comprehensive automobile, and property damage insurance in 
reasonable amounts covering Subcontractor's obligations and responsibilities 
hereunder, and shall maintain proper Workmen's Compensation insurance 
covering all employees performing under this Subcontract.

H-11 LIMITATION OF OBLIGATION

Nothing contained herein shall be deemed as obligating ANSTEC to order any of 
the services described herein; however, when and if services are ordered by 
ANSTEC hereunder, such orders shall be subject to the terms and conditions of 
this Subcontract.

H-12 ASSIGNMENT

Neither the interest to this Subcontract nor any other right or obligation 
hereunder, may be assigned or transferred to any third party, nor may any 
security interest therein be created without the prior written consent of 
ANSTEC.

                                      -14-

<PAGE>

H-13 ORDER OF PRECEDENCE

In the event of an inconsistency between the terms and conditions of this 
Subcontract, the inconsistency shall be resolved by giving precedence in the 
following order:

1.  The Subcontract Schedule (Sections C through I except Section D, 
    Statement of Work). 
2.  The General Provisions (whether incorporated by reference or otherwise).
3.  Section D, Statement of Work (Attachment A). 
4.  All other terms and conditions of this Subcontract.

H-14 COMPLIANCE WITH LAW

Subcontractor and all persons furnished by Subcontractor shall comply with 
the Walsh Healy Public Contracts Act, the Fair Labor Standards Act, the 
Occupational Safety and Health Act and all other federal, state, and local 
laws, ordinances, regulations and codes, including identification and 
procurement of required permits, certificates, approvals and inspections, in 
performance under this Subcontract.  Subcontractor agrees to indemnify ANSTEC 
and its customers for any loss or damage that may be sustained by reason of 
any failure to do so.

H-15 RELEASE OF NEWS INFORMATION

In the event either party desires to issue a news release, public 
announcement, advertisement, or other form of publicity concerning their 
efforts in connection with this Subcontract, then the party issuing the 
publicity shall obtain the written approval of the other prior to the release 
of said information and shall give full consideration to the role and 
contribution of the other party.  Written approval shall not be unreasonably 
withheld by the other party and shall be in accordance with the requirements 
of the Prime Contract.

H-16 DISSEMINATION OF INFORMATION

There shall be no dissemination or publication, except within and between 
ANSTEC and the Subcontractor, of information developed under this Subcontract 
or contained in the reports to be furnished pursuant to this Subcontract 
without mutual agreement of the parties.

                                      -15-

<PAGE>

H-17 NON-WAIVER OF RIGHTS

The failure of ANSTEC or the Subcontractor to insist upon strict performance 
of the terms and conditions of this Subcontract or to exercise any rights or 
remedies, shall not be construed as a waiver of its rights to assert any of 
same rights or to rely on any such terms or conditions at any time thereafter.

H-18 CERTIFICATIONS

A.  Subcontractor shall complete and submit to ANSTEC, upon execution of this 
Subcontract, the Offeror Representation and Certifications from the Prime 
Contract set forth in Attachment E.

B.  If Prime Contract provision requires ANSTEC to file a response or claim 
within a specified period and such response or claim is on behalf or in 
conjunction with Subcontractor, Subcontractor shall submit any relevant 
information or evidence of such response or claim to ANSTEC within the first 
half of the specified period, providing ANSTEC has promptly notified 
Subcontractor of the request.

C.  Subcontractor represents and certifies, to ANSTEC, upon executing this 
Subcontract, that Subcontractor is eligible to perform government contracts 
and Subcontractor shall not take any action or fail to take appropriate 
action, when necessary, which would jeopardize its eligibility.  In the event 
the Subcontractor should become ineligible to perform under this Subcontract 
or the Prime Contract, Subcontractor shall immediately notify ANSTEC, in 
writing, of such ineligibility.

H-19 SEVERABILITY

If any term or provision of this Subcontract Agreement shall be found by a 
court of competent jurisdiction to be illegal or otherwise unenforceable, the 
same shall not invalidate the whole of this Subcontract, but such term or 
provision shall be deemed modified to the extent necessary in the court's 
opinion to render such term or provision enforceable, and the rights and 
obligations of the parties shall be construed and enforced accordingly, 
preserving to the fullest permissible extent the intent and agreements of the 
parties herein set forth.

H-20 LIABILITY

Subcontractor shall be liable to ANSTEC for all costs not reimbursed by 
Customer that ANSTEC incurs as a result of Subcontractor's default under this 
Subcontract and for any amount that is reduced by Customer for defective cost 
and pricing data supplied by Subcontractor.  Subcontractor liability shall 
include but not be entitled to increased costs 

                                      -16-

<PAGE>

resulting from delays caused by Subcontractor or increased costs incurred by 
ANSTEC performing or procuring a third party to perform Subcontractor's 
portion of the work hereunder.  ANSTEC may seek judicial or equitable remedy 
in any court of competent jurisdiction for any additional costs incurred by 
reason of Subcontractor's default.

H-21 REMEDIES

All remedies available to either party for breach of this Subcontract by the 
other party are and shall be deemed cumulative and may be exercised 
separately or concurrently.  The exercise of a remedy shall not be an 
election of such remedy to the exclusion of other remedies available by law 
or in equity.

H-22 SOLICITATION

Neither party shall knowingly solicit, recruit, hire or otherwise employ or 
retain any employee of the other, performing under this Subcontract or the 
Prime Contract, during the term of this Subcontract and for one (1) year 
following the termination or expiration of this Subcontract, without the 
prior written consent of the other party.

H-23 COMPLETE AGREEMENT

This Subcontract Agreement contains the entire agreement between the parties 
hereto with respect to the matters covered herein.  No other agreements, 
representations, warranties or other matters, oral or written, shall be 
deemed to bind the parties hereto with respect to the subject matter hereof.  
Any changes or amendments to this Subcontract may be made only in writing and 
signed by the parties to be bound thereby.

H-24 APPLICABLE STATE LAW

This Subcontract shall be deemed to have been entered into in the 
Commonwealth of -Virginia, United States of America, and shall, for all 
purposes, be governed by and construed under the laws thereof regardless of 
where any court action or legal proceeding is brought in connection with this 
Subcontract.

H-25 PRIORITY RATING

This is a rated order, Priority Rating DO-A7, certified for national defense 
use, and you are required to follow all the provisions of the Defense 
Priorities and Allocations regulation.

                                      -17-

<PAGE>

                         SECTION I - GENERAL PROVISIONS

The attached GENERAL PROVISIONS are applicable to and a part of this 
Subcontract.

                   SECTION J - LISTS OF DOCUMENTS.  EXHIBITS,
                             AND OTHER ATTACHMENTS

ATTACHMENT A - Statement of Work and Specifications

ATTACHMENT B - Prices of Supplies/Service

ATTACHMENT C - General Provisions of Prime Contract



IN WITNESS WHEREOF, the parties hereto have executed this Subcontract 
Agreement by their officers thereunto duly authorized as of the date first 
written above.

ANSTEC, Inc.                           American Computer and
                                       Electronics Corporation


BY:/s/ Jerome H. Griss                 BY:/s/ S. Joseph Dorr 
- ------------------------------         ------------------------------

NAME:  Jerome H. Griss                 NAME:  S. Joseph Dorr 
- ------------------------------         ------------------------------

TITLE:  Manager of Contracts           TITLE:  Vice President 
- ------------------------------         ------------------------------

DATE:  December 1, 1995                DATE:  November 8, 1995 
- ------------------------------         ------------------------------



                                      -18-

<PAGE>

                                  ATTACHMENT A

                      STATEMENT OF WORK AND SPECIFICATIONS


The Subcontractor shall provide all labor, equipment, tools, supervision, and 
other items or services as proposed in its proposal dated March 20, 1995, to 
support ANSTEC under the Prime Contract.

                                      -19-

<PAGE>

                                  ATTACHMENT B

                           PRICES OF SUPPLIES/SERVICES


Subcontractor's unit prices, as submitted it its proposal dated March 20, 
1995, are incorporated herein by reference.

                                      -20-

<PAGE>

                                  ATTACHMENT C

                    GENERAL PROVISIONS OF THE PRIME CONTRACT

The Federal Acquisition Regulation ("FAR") and agency FAR Supplement clauses 
identified below are hereby incorporated by reference with the same force and 
effect as if set forth in full.

I.  FEDERAL ACQUISITION REGULATION CLAUSES

CLAUSE NUMBER           CLAUSE TITLE (DATE)
- -------------           -------------------

52.201-1                DEFINITIONS (APR 1984)
52.203-1                OFFICIALS NOT TO BENEFIT (APR 1984)
52.203-3                GRATUITIES (APR 1984)
52.203-5                COVENANT AGAINST CONTINGENT FEES (APR 1984)
52.203-6                RESTRICTIONS ON SUBCONTRACTOR'S SALES TO THE GOVERNMENT
                        (JUL 1985)
52.203-7                ANTI-KICKBACK PROCEDURES (OCT 1988)
52.203-9                REQUIREMENT FOR CERTIFICATE OF PROCUREMENT INTEGRITY
                        (MODIFICATION) (NOV 1990)
52.203-10               PRICE OR FEE ADJUSTMENT FOR ILLEGAL OR IMPROPER ACTIVITY
                        (SEP I 990)
52.203-12               LIMITATION ON PAYMENTS TO INFLUENCE CERTAIN FEDERAL
                        TRANSACTIONS (JAN 1990)
52.210-5                NEW MATERIAL (APR 1984)
52.210-7                USED OR RECONDITIONED MATERIAL, RESIDUAL INVENTORY, AND
                        FORMER GOVERNMENT SURPLUS PROPERTY (APR 1984)
52.212-8                DEFENSE PRIORITY AND ALLOCATION REQUIREMENTS (SEP 1990)
52.215-1                EXAMINATION OF RECORDS BY THE CONTROLLER GENERAL
                        (FEB 1993)
52.215-2                AUDIT--NEGOTIATION (FEB 1993)
52.215-22               PRICE REDUCTION FOR DEFECTIVE COST OR PRICING DATA
52.215-26               INTEGRITY OF UNIT PRICES (APR 1991)
52.215-27               TERMINATION OF DEFINED BENEFIT PENSION PLANS (SEP 1990)
52.215-30               FACILITIES CAPITAL COST OF MONEY (SEP 1987)
52.215-33               ORDER OF PRECEDENCE (JAN 1986)
52.215-39               REVERSION OR ADJUSTMENT OF PLANS FOR POSTRETIREMENT
                        BENEFIT OTHER THAN PENSION(PRB) (JUL 1991)

                                      -21-

<PAGE>

52.216-7                ALLOWABLE COST AND PAYMENT (Applicable to CLIN 0003 and
                        all corresponding CLINS during the option years)
                        (JUL 1991)
52.216-11               COST CONTRACT--NO FEE (Applicable to CLIN 0003 and all
                        corresponding CLINS during the option years) (JUL 1991)
52.219-8                UTILIZATION OF SMALL BUSINESS CONCERNS AND SMALL
                        DISADVANTAGED BUSINESS CONCERNS (FEB 1990)
52.219-13               UTILIZATION OF WOMEN OWNED SMALL BUSINESSES (AUG 1986)
52.219-14               LIMITATIONS ON SUBCONTRACTING (JAN 1991)
52.220-3                UTILIZATION OF LABOR SURPLUS AREA CONCERNS (APR 1984)
52-220-4                LABOR SURPLUS AREA SUBCONTRACTING PROGRAM (APR 1984)
52.222-1                NOTICE TO THE GOVERNMENT OF LABOR DISPUTES
52.222-20               WALSH-HEALY PUBLIC CONTRACTS ACT (APR 1984)
52.222-26               EQUAL OPPORTUNITY (APR 1984)
52.222-28               EQUAL OPPORTUNITY PREAWARD CLEARANCE OF SUBCONTRACTS
                        (APR 1984)
52.222-29               NOTIFICATION OF VISA DENTAL (APR 1984)
52.222-35               AFFIRMATIVE ACTION FOR SPECIAL DISABLED AND VIETNAM ERA
                        VETERANS (APR 1984)
52.222-36               AFFIRMATIVE ACTION FOR HANDICAPPED WORKERS (APR 1984)
52.222-37               EMPLOYMENT REPORTS ON SPECIAL DISABLED VETERANS AND
                        VETERANS OF THE VIETNAM ERA (APR 1984)
52.223-2                CLEAN AIR AND WATER (APR 1984)
52.223-6                DRUG FREE WORKPLACE (JUL 1990)
52.225-3                BUY AMERICAN ACT--SUPPLIES (JAN 1994)
52.225-11               RESTRICTIONS ON CERTAIN FOREIGN PURCHASES (MAY 1992)
52.227-1                AUTHORIZATION AND CONSENT (APR 1984)
52.227-2                NOTICE AND ASSISTANCE REGARDING PATENT AND COPYRIGHT
                        INFRINGEMENT (APR 1984)
52.227-3                PATENT INDEMNITY (APR 1984)
52.227-19               COMMERCIAL COMPUTER SOFTWARE RESTRICTED RIGHTS
                        (JUN 1987)
52,228-5                INSURANCE--WORK ON A GOVERNMENT INSTALLATION (SEP 1989)
52.229-3                FEDERAL, STATE, AND LOCAL TAXES (JAN 1991)
52.229-5                TAXES--CONTRACTS PERFORMED IN U.S. POSSESSIONS OR
                        PUERTO RICO (APR 1984)
52.232-11               EXTRAS (APR 1984)

                                      -22-

<PAGE>

52.232-16               PROGRESS PAYMENTS (applicable to CLIN 0001 and all
                        corresponding CLINS during the option years) (JUL 1991)
52.232-20               LIMITATION OF COST (applicable to CLIN 0003 and all
                        corresponding CLINS during the option years) (APR 1983)
52.232-23               ASSIGNMENT OF CLAIMS (JAN 1986)
52.236-9                PROTECTION OF EXISTING VEGETATION, STRUCTURES,
                        EQUIPMENT, UTILITIES, AND IMPROVEMENTS (APR 1984)
52.242-1                NOTICE OF INTENT TO DISALLOW COSTS (Applicable to
                        CLIN 0003 and all corresponding option years) (APR 1984)
52.242-13               BANKRUPTCY (APR 1991)
52.242-1                CHANGES - FIXED PRICE (AUG 1987) ALTERNATE II
                        (Applicable to CLIN 0015 and all corresponding CLINS
                        during the option years) (APR 1984)
52.243-2                CHANGES - COST REIMBURSEMENT (Applicable to CLIN 0003
                        and corresponding CLINS during the option years)
                        (AUG 1987)
52.243-7                NOTIFICATION OF CHANGES (The blank is completed as
                        follows: 14 days) (APR 1984)
52.253-1                COMPUTER GENERATED FORMS (JAN 1991)

II.   DEFENSE FAR SUPPLEMENT CLAUSES

252.203-7000            STATUTORY PROHIBITION ON COMPENSATION TO FORMER
                        DEPARTMENT OF DEFENSE EMPLOYEES (DEC 199 1)
252.203-7001            SPECIAL PROHIBITION ON EMPLOYMENT (APR 1993)
252.203-7003            PROHIBITION AGAINST RETALIATORY PERSONNEL ACTION
                        (APR 1992)
252.204-7003            CONTROL OF GOVERNMENT PERSONNEL WORK PRODUCT (APR 1992)
252.205-7000            PROVISION OF INFORMATION To COOPERATIVE AGREEMENT
                        HOLDERS (DEC 1991)
252.209-7000            ACQUISITION FROM SUBCONTRACTORS SUBJECT TO ON-SITE
                        INSPECTION UNDER THE INTERMEDIATE RANGE NUCLEAR FORCES 
                        (INF) TREATY (DEC 1991)
252.210-7003            ACQUISITION STREAMLINING (DEC 1991)
252.215-7000            PRICING ADJUSTMENTS (DEC 199 1)
252.225-7001            BUY AMERICAN ACT AND BALANCE OF PAYMENTS PROGRAM
                        (JAN 1994)
252.225-7005            QUALIFYING COUNTRY SOURCES AS SUBCONTRACTORS (DEC 1991)
252.225-7005            IDENTIFICATION OF EXPENDITURES IN THE UNITED STATES
                        (Applicable to OCONUS delivery orders) (DEC 1991)
252.225-7031            SECONDARY ARAB BOYCOTT OF ISRAEL (JUN 1992)

                                      -23-

<PAGE>

252.227-7018            RESTRICTIVE MARKINGS ON TECHNICAL DATA (OCT 1988)
252.227-7026            DEFERRED DELIVERY OF TECHNICAL DATA OR COMPUTER SOFTWARE
                        (APR 1988)
252.227-7029            IDENTIFICATION OF TECHNICAL DATA (APR 1988)
252.227-7030            TECHNICAL DATA--WITHHOLDING OF PAYMENT (OCT 1988)
252.227-7031            DATA REQUIREMENTS (OCT 1988)
252.227-7036            CERTIFICATION OF TECHNICAL DATA CONFORMITY (MAY 1987)
252.227-7037            VALIDATION OF RESTRICTIVE MARKINGS ON TECHNICAL DATA
                        (APR 1988)
252.231-7001            PENALTIES FOR UNALLOWABLE COSTS (Applicable to CLIN 0003
                        and all corresponding CLINS during the option years)
                        (APR 1993)
252.232-7004            DoD PROGRESS PAYMENT RATES (Applicable to CLIN 0001 and
                        all corresponding CLINS during the option years)
                        (NOV 1993)
252.232-7006            REDUCTION OR SUSPENSION OF CONTRACT PAYMENTS UPON
                        FINDING OF FRAUD (AUG 1992)
252.233-7000            CERTIFICATION OF CLAIMS AND REQUEST FOR ADJUSTMENT OF
                        RELIEF (MAY 1991)
252.236-7000            MODIFICATION OF PROPOSALS--PRICE BREAKDOWN (DEC 199 1)
252-242-7000            POST AWARD CONFERENCE (DEC 199 1)
252.243-7001            PRICING OF CONTRACT MODIFICATIONS (DEC 199 1)
252.247-7023            TRANSPORTATION OF SUPPLIES BY SEA (DEC 1991)
252.249-7001            NOTIFICATION OF SUBSTANTIAL IMPACT ON EMPLOYMENT
                        (DEC 1991)
252.249-7002            NOTIFICATION OF PROPOSED PROGRAM TERMINATION OR
                        REDUCTION (MAY 1994)

III.  AIR FORCE FEDERAL ACQUISITION REGULATION SUPPLEMENT

5352.210-9000           ELIMINATION OF CLASS I OZONE DEPLETION SUBSTANCES IN
                        AIR FORCE PROCUREMENTS (MAY 1993)
5352.223-9000           SAFETY AND ACCIDENT PREVENTION (APR 1984)

IV.   ELECTRONIC SYSTEMS CENTER FEDERAL ACQUISITION REGULATION SUPPLEMENT

5352.228-9500           INSURANCE CLAUSE IMPLEMENTATION (JUL 1993)

                                      -24-

<PAGE>

                                                                   EXHIBIT 10.9

AGREEMENT TO PURCHASE HARDWARE, RENDER SERVICES AND LICENSE AND SUBLICENSE DE 
USE OF SOFTWARE, EXECUTED ON ONE SIDE BY TELEFONOS DE MEXICO, S.A. DE C.V., 
REPRESENTED HEREIN BY ING.  ADOLFO CEREZO PEREZ, IN HIS POSITION AS MANAGING 
AND FINANCE DIRECTOR, HEREINAFTER REFERRED TO AS "TELMEX", AND THE OTHER PART 
BY AMERICAN COMPUTER AND ELECTRONICS CORPORATION, REPRESENTED HEREIN BY MR.  
THOMAS RUSSOTTO, IN HIS POSITION AS VICE-PRESIDENT, HEREINAFTER REFERRED TO 
AS "ACEC" PURSUANT TO THE FOLLOWING RECITALS AND CLAUSES:

                                   RECITALS:

I The representative of TELMEX states that:

a) His principal was incorporated as a Sociedad Anonima pursuant to Public 
Deed Number 34,726, dated December 23, 1947, which was attested before Notary 
Public number 54 of the Federal District, Mr. Graciano Contreras Saavedra, 
document which is currently registered under commercial record number 5229 of 
the Public Registry of Commerce of Mexico City, Federal District.

b) Under Public Deed number 79,436, dated April 10, 1984, granted before 
Notary Public number 54 of the Federal District, Mr. Graciano Contreras 
Saavedra, it was protocolized the General Ordinary and Extraordinary 
Shareholders Meeting of Telefonos de Mexico, S.A., held on March 15, 1984 in 
which it was adopted among others, including the variable capital regime, 
being recorded the first testimony in the above mentioned commercial record 
at the Public Registry of Commerce of the Federal District.

c) Through Public Deed number 94,333, dated December 11, 1990, granted before 
Notary Public number 54 of the Federal District, Mr. Graciano Contreras 
Saavedra it was protocolized the General Extraordinary Shareholders Meeting 
of Telefonos de Mexico, S.A. de C.V., held on July 15, 1990 in which it was 
agreed to increase the corporate capital and fully modify its corporate 
bylaws, being recorded the first testimony in the above mentioned commercial 
record in the Public Registry of Commerce of the Federal District.

d) The corporate of his principal is, among others, bill, install, maintain, 
operate and explode a Public Telephone and Telecommunications Network to 
render the public service of conducting voice, sound, data, text and image 
signals, at a local and long distance national and international level and 
the Public Service of Basic Telephone.

e) His principal has a Title of Concession granted by the Federal Government 
for a term of 50 years as of March 10, 1976, in accordance with the 
publication in the official Gazette of the Federation dated March 31, 1976 
and the amendment to the Title of 

<PAGE>


Concession dated August 10, 1990 published in the official Gazette of the 
Federation on December 10, 1990 to render the services mentioned in the 
preceding paragraph.

f) Under Public Deed number 97,110 dated December 17, 1991, granted be-fore 
Notary Public number 54 of the Federal District, Mr. Homero Diaz Rodriguez 
whereby the authority to execute this agreement on behalf of its principal, 
same which has not been revoked nor modified.

g) His principal is domiciled in Parque Via 190, Col. Cuauhtemoc CP 06500, 
Mexico, D.F.

II The representative of ACEC declares under oath:

a) His principal is a corporation organized in accordance with the laws of 
the State of Maryland, United States of America, as evidenced with a copy of 
the bylaws, certified by the competent authority of the State of Maryland, 
United States of America.

b) Has the legal capacity to execute this agreement on behalf of its 
principal as evidenced in the Power of Attorney which is enclosed to this 
agreement.

c) The corporate purpose of his principal is, among others: design, 
manufacture, supply and service mediation devices for billing systems and 
fraud control for telephone companies.

d) His principal is currently in compliance with all its obligations as a 
supplier of equipment, software and rendering services before the 
corresponding authorities.

e) Has the financial and administrative ability to execute this agreement and 
the technical and economic conditions to perform the purposes of this 
agreement.

f) His Principal is domiciled at 209 Perry Parkway, Gaithersburg, Maryland, 
20877 United States of America.

III Joint statements:

a) Both parties state through their representatives that they agree that this 
agreement does not restrict ACEC from rendering similar or equivalent 
professional services to the ones provided under this agreement to 
individuals or entities other than TELMEX, consequently this agreement shall 
not be considered at any moment as an exclusive agreement or as a labor 
agreement between the parties and therefore there shall not be made nor shall 
it be allowed to make any claim that may arise for these matters.

b)(sic) The clauses and titles of the same as well as the exhibits are listed 
below:


                                      -2-

<PAGE>


                                    CLAUSES

CLAUSE   FIRST:           PURPOSE OF THE AGREEMENT
CLAUSE   SECOND:          PRICE
CLAUSE   THIRD:           APPROVAL COMMITTEE
CLAUSE   FORTH:           TERMS AND CONDITIONS OF PAYMENT
CLAUSE   FIFTH:           DELIVERY
CLAUSE   SIXTH:           DURATION
CLAUSE   SEVENTH:         WORK PROGRAM
CLAUSE   EIGHTH:          SITE ENGINEERING SERVICES
CLAUSE   NINTH:           SOFTWARE SUPPLY
CLAUSE   TENTH:           TRANSFER OF SOFTWARE
CLAUSE   ELEVENTH:        DOCUMENTATION
CLAUSE   TWELFTH:         TRAINING
CLAUSE   THIRTEENTH:      CONDITIONS TO RENDER THE SERVICES
CLAUSE   FOURTEENTH:      REPORT
CLAUSE   FIFTEENTH:       CONVENTIONAL PENALTY
CLAUSE   SIXTEENTH:       BOND
CLAUSE   SEVENTEENTH:     WARRANTY
CLAUSE   EIGHTEENTH:      INFORMATION AND CONFIDENTIALITY
CLAUSE   NINETEENTH:      COPYRIGHTS
CLAUSE   TWENTIETH:       PRIOR TERMINATION
CLAUSE   TWENTY FIRST:    RESPONSIBILITY
CLAUSE   TWENTY SECOND:   LABOR RESPONSIBILITY
CLAUSE   TWENTY THIRD:    SUBCONTRACTING AND ASSIGNMENT 
                          OF RIGHTS
CLAUSE   TWENTY FOURTH:   FORCE MAJEURE
CLAUSE   TWENTY FIFTH:    CAUSES OF TERMINATION
CLAUSE   TWENTY SIXTH:    ACKNOWLEDGEMENT
CLAUSE   TWENTY SEVENTH:  NOTICES
CLAUSE   TWENTY EIGHTH:   AMENDMENTS
CLAUSE   TWENTY NINTH:    DISPUTE RESOLUTION


                                   EXHIBITS

l. - DESCRIPTION OF THE PROJECT
2. - DETAILED DESCRIPTION OF THE COSTS
3. - APPROVAL COMMITTEE
4. - WORK PROGRAM
5. - TRAINING
6. - DELIVERY PROCEDURE FOR THE PURPOSE OF PAYMENT
7. - CONDITIONS FOR THE UPGRADE OF THE DCMS LITE
8. - ALARMS
9. - TERMINOLOGY


                                      -3-

<PAGE>


c) Both parties state that having made the above statements, they agree to 
formalize this agreement pursuant to the following clauses and exhibits of 
the agreement.

                                    CLAUSES

CLAUSE FIRST. - PURPOSE OF THE AGREEMENT

ACEC is obligated with TELMEX to sell hardware, render professional services 
for the development and installation of the "TELEPROCESS PROJECT" described 
in Exhibit 1 of this agreement and to grant to TELMEX and its affiliated a 
license and sublicense to use the software as provided in this agreement and 
its exhibits.  For these purposes, ACEC is obligated to supply, install and 
render the services which are described in Exhibit 1 hereof.

CLAUSE SECOND. - PRICE

The maximum amount that TELMEX will pay to ACEC for the development of the 
whole "TELEPROCESS PROJECT" shall be the amount of (Confidential material is 
omitted and has been filed separately with the Commission) without Value 
Added Tax, which is formed as follows:

Material and software    (Confidential material is omitted and has been filed 
                         separately with the Commission)                      

Services and royalties   (Confidential material is omitted and has been filed  
                         separately with the Commission)                       

Expenses                 (Confidential material is omitted and has been filed  
                         separately with the Commission)                       

The price corresponding to expenses is an estimate therefore the final amount 
of the same shall be determined pursuant to the terms and conditions 
established in the clause Terms and Conditions of Payment of this agreement.

The above mentioned price includes a discount of (Confidential material is 
omitted and has been filed separately with the Commission) which ACEC undertakes
to grant to TELMEX to support financing.                               

The detailed description of the costs related with the "TELEPROCESS PROJECT" 
are defined in Exhibit 2 of this agreement.

The price of the "TELEPROCESS PROJECT" also includes direct and indirect 
expenses that "ACEC" may have do to comply with this "AGREEMENT", except for 
those expressly mentioned in this "AGREEMENT".


                                      -4-

<PAGE>


CLAUSE THIRD. - APPROVAL COMMITTEE

In order to control the development of the "TELEPROCESS PROJECT" purpose of 
this "AGREEMENT", an Approval Committee shall be created, same which shall be 
formed by "TELMEX" personnel.  This committee shall have the power to 
evaluate and approve the advances of the "TELEPROCESS PROJECT", issuing for 
these purposes a letter or approval to make the payment-

The Approval Committee is detailed in Exhibit 3 of this "AGREEMENT".

CLAUSE FORTH. - TERMS AND CONDITIONS OF PAYMENT

"TELMEX" shall pay in cash, pursuant to the conditions mentioned in Exhibit 6 
of this "AGREEMENT", and prior authorization of the Approval Committee 
pursuant to the following:

ITEM                          PAYMENT
Materials and software        40% upon delivery at "site"
And royalties
                              50% upon start and test of equipment
                              5% upon connection with the Central
                              5% upon polling test with billing equipment

Services                      100% upon delivery

Expenses                      100% upon delivery

Payment of the software and hardware purpose of this "AGREEMENT", may be made 
by "TELMEX" by using any of its existing lines of financing, being obligated 
"ACEC" to provide the documents that "EXIMBANK" may require to make such 
payment.

Complementary documents that "ACEC" shall deliver to "TELMEX" for each item:

MATERIALS AND SOFTWARE.  Commercial invoice of "ACEC" based on the price per 
unit indicated in Exhibit 2 of this "AGREEMENT" and the corresponding 
"Purchase Order" derived from this "AGREEMENT", enclosing the Certificate of 
Origin of the product and evidence that it was manufactured in the United 
States of America.

SERVICES AND ROYALTIES.  Commercial invoice of "ACEC" based on the price per 
unit indicated in Exhibit 2 of this "AGREEMENT" and corresponding "Purchase 
Order" derived hereof.


                                      -5-

<PAGE>


If applicable, "TELMEX" shall withhold to "ACEC" the income tax (I.S.R.) in 
accordance with the applicable law.

EXPENSES.  List of expenses, with enclosed documents and invoices, based on 
the price per unit indicated in Exhibit 2 of this "AGREEMENT".  The above 
mentioned list shall include import duties, freight expenses, insurance and 
customs expenses of the software and hardware, purpose of this "AGREEMENT".  
ACEC shall deliver the original invoices and import certificate issued on 
behalf of "TELEFONOS DE MEXICO S.A. DE C.V.", and complying with all tax 
requirements then in effect.  "TELMEX" will only reimburse to "ACEC" the 
expenses, provided that, they are related with the transportation, insurance 
or importation (including import duties) in accordance with the unit values 
indicated in Exhibit 2, table "A" of this "AGREEMENT" and pursuant to the 
transportation discount policies mentioned in Exhibit 2 and calculated in 
accordance with table "B" hereof.

Any excess in the expenses in relation to the price per unit indicated in 
Exhibit 2 table "A" shall be paid by "ACEC" except for any variation 
increasing import duties, that may not be controlled by "ACEC", as mentioned 
in Exhibit 2 hereof.  In the event of a decrease in the expenses it shall be 
automatically reflected in the invoices that "ACEC" delivers to "TELMEX", 
such as the annual decrease of the duties applicable to the equipment 
pursuant to NAFTA, "ACEC" guarantees that the software and hardware supplied 
hereunder are of U.S. origin.

It shall be the responsibility of "ACEC" to import and make any customs 
proceedings required for the Software and Hardware purpose of this 
"AGREEMENT" on behalf and for the account of "TELMEX", paying the 
corresponding taxes, duties, expenses, import duties and value added tax.

"ACEC" shall obtain the documents with the fiscal requirements in effect, 
that evidence the legal importation of the Hardware and Software, and the 
expenses deriving from said importation, including insurance, transportation 
and customs agent and import duties.

"ACEC" shall be liable for any misuse of this power and hereby undertakes to 
maintain "TELMEX"'s interest safe from any damage, and to reimburse any 
damages that his misuse may cause without any legal or financial limitation.

"ACEC" undertakes to obtain a Surety Bond from those rendering services to 
"ACEC" related with the legal importation of the Software and Hardware 
purpose of this "AGREEMENT", under which they release "TELMEX" of any payment 
obligation to such individuals or entities in connection with this 
"AGREEMENT", being "ACEC" the only liable party before those individuals or 
entities for making the payments deriving from the services requested by 
"ACEC".  This letter shall be delivered to "TELMEX" prior to the acceptance 
for reimbursement of any invoice issued by such individuals or entities.


                                      -6-

<PAGE>


It shall be deemed as a payment in cash, the one made by "TELMEX" after 
thirty (30) calendar days following the presentation of the invoices by 
"ACEC" with all the requirements, at the corporate domicile of "TELMEX" or at 
the place previously requested in writing by the latter, pursuant to the 
proceeding established by "TELMEX", and shall comply with the corresponding 
tax requirements.  The invoices shall include the corresponding report of the 
activities developed, the advance of the "TELEPROCESS PROJECT" and the 
finished products, same which shall be approved by the Approval Committee.

Payments in American dollars in favor of "ACEC" deriving from the performance 
of the provisions of this "AGREEMENT" shall be made by wiretransfer in 
American dollars, within the Mexican legal framework authorizing the transfer 
of currency abroad, and considering the following information:

American Computer and Electronics Corporation 209 Perry Parkway
209 Perry Parkway
Gaithersburg, Maryland 20877
U.S.A.

Citizens Bank of Maryland
14401 Sweitzer Lane
Laurel, Maryland 20707
ABA # 055002969
Account # 121-030-0634

The reimbursement of expenses account denominated in National Currency (N$) 
shall be paid in cash in National Currency (N$), such as reimbursement of 
import duties, among others.  "TELMEX" shall make the reimbursements through 
a wiretransfer of the amount of the invoices in National Currency (N$) to the 
account in National Currency (N$) indicated by "TELMEX" to "ACEC" in writing 
with enough anticipation, provided that such transfer is made outside of the 
national territory (Mexico), otherwise, "TELMEX" shall deliver a check in 
Nuevos Pesos (N$) in favor of AMERICAN COMPUTER AND ELECTRONICS CORPORATION.

CLAUSE FIFTH. - DELIVERY

"ACEC" shall deliver to "TELMEX" the Hardware and Software purpose of this 
"AGREEMENT" in "TELMEX" installations in Mexico, D.F. designated in the 
purchase orders deriving from this "AGREEMENT".  "ACEC" has included in the 
costs mentioned in Exhibit 2 the redistribution of the Hardware and Software 
of the telephone Centrals designated by "TELMEX" to be installed by "ACEC".

The delivery proceeding for payment is established in Exhibit 6.


                                      -7-

<PAGE>


CLAUSE SIXTH. - DURATION

The term of this "AGREEMENT" shall be three (3) years as of the date of 
execution of the same, consequently it expires on indicated date, without 
need of a court notice.

The warranties established in this "AGREEMENT" shall continue in effect until 
its expiration.

The licenses and sublicenses to use the Software granted by "ACEC" to 
"TELMEX" and its Affiliates and that "TELMEX" has paid in whole shall be 
perpetual.

CLAUSE SEVENTH. - WORK PROGRAM

"ACEC" shall deliver to "TELMEX" within the following five days after the 
execution of this "AGREEMENT" a detailed WORK PROGRAM, which shall be 
submitted for "TELMEX" approval for its performance.  "ACEC" undertakes to 
supply the Hardware, Software and services to "TELMEX" in the places and 
dates designated by the latter, and in accordance with the criteria set forth 
in Exhibit 4 to this "AGREEMENT".

In the event of changes to the WORK PROGRAM due to "TELMEX" needs, both 
parties shall agree in writing to the corresponding amendments.

CLAUSE EIGHTH. - "SITE" ENGINEERING SERVICES

"ACEC" shall provide in the initial stage of "site" engineering services, 
visiting each central, prior the issuance by "TELMEX" of a "Purchase Order" 
for the Hardware and Software for such centrals included under this 
"AGREEMENT" in order for "ACEC" to obtain the data required by "ACEC" for the 
"site survey" procedures or field survey.

Both parties agree that these services are required to determine the 
condition of the equipment, of the "upgrade", the condition of the electric 
installation, the location of the equipment and devices, wiring and 
interfaces among others.

The field surveys performed by "ACEC" shall be delivered to "TELMEX" in a 
series of reports grouped in binders by SOT, for its later use and validation.

The field reports shall be performed prior programming with "TELMEX".


                                      -8-

<PAGE>


CLAUSE NINTH. - SOFTWARE SUPPLY

For purposes of this "AGREEMENT", the software includes the operative 
Systems, the System Software (including the software for storage and 
delivery, software for management of the system, software for diagnosis and 
maintenance, software for automatic alarm report), Application Software and 
Network Management Software, whether "ACEC" is the author of said Software or 
has the authorization to license or sublicense the same.

"ACEC" shall provide to "TELMEX" the software as follows:

a) The supply of the Software shall be made with all the corresponding 
related documents, diskettes or magnetic means, in accordance with the 
date(s) established hereunder on the requests deriving herefrom.

b) With the purpose of protecting the industrial and intellectual property 
related with the Software subject of this "AGREEMENT", "TELMEX" hereby is 
obligated to reproduce in copies used as back-up the notices of being a trade 
secret and a copyright as applicable in accordance with "ACEC"'s indication 
then in effect.

c) "ACEC" undertakes to supply and install the Software or to be installed by 
"TELMEX" as the latter deems it convenient, in the equipment and dates 
designated in the WORK PROGRAM.

d) "ACEC" shall be responsible for submitting to "TELMEX" any new updated, if 
any, Software without additional cost for "TELEMEX", within the next fifteen 
(15) working days after the new product is released, during the duration of 
this "AGREEMENT".

e) "ACEC" undertakes to supply to the "TELEMEX'S" Systems library an original 
additional copy all the documents regarding the Software Application, 
including the main programs and documentation of the whole licensed and 
sublicensed Software and new versions (the "Documentation"), in the same 
delivery dates established in c) of this clause.

f) All Software shall be delivered based on executable programs except for 
Software Application, which shall be supplied along with the source code.  
With this code "TELMEX" will be able to modify the existing applications as 
well as modify the call registration format, increasing or decreasing its 
size and auditioning eliminating fields.

CLAUSE TENTH. - TRANSFER OF SOFTWARE

"TELMEX" may transfer the software subject of this "AGREEMENT" without 
additional cost for "TELMEX" within the Mexican Republic to a computer 
equipment of 


                                      -9-

<PAGE>


similar configuration, if the latter substitutes the computer equipment 
designated by "TELMEX" or if the computer equipment designated by "TELMEX" 
were transferred to a different location within "TELMEX" whether within the 
territory of the Mexican Republic or abroad, provided "TELMEX" previously 
notifies "ACEC".

CLAUSE ELEVENTH. - DOCUMENTATION

"ACEC" shall deliver all documentation related with the use of the Software 
and Hardware in the terms and conditions established in this "AGREEMENT".

The following documents shall be delivered in Spanish:

- -  DCMS user's manual
- -  DC4S Lite user's manual
- -  ANMS user's manual

CLAUSE TWELFTH. - TRAINING

"ACEC" undertakes to provide sufficiently broad training both in the 
theoretical and practical aspect, in order for "TELMEX" and INTTELMEX 
personnel to be able to train "TELMEX" personnel to perform the functions of: 
projecting, installing, testing, receiving, operating, maintaining, and 
supervising adequately and satisfactorily the systems and/or equipment 
purpose of this "AGREEMENT"; in the understanding that such training shall be 
for the time and quality required by "TELMEX" and INTTELMEX without any 
additional cost and complying the specifications contained in Exhibit 5 of 
this "AGREEMENT".

CLAUSE THIRTEENTH. - CONDITIONS TO RENDER THE SERVICES

a. "TELMEX" shall have the right to continuously supervise the quality 
control and to approve the performance of the works under this "AGREEMENT", 
at all times and until the end of the same.

b. Upon termination of the "TELEPROCESS PROJECT" dully accepted by "TELMEX", 
termination letter of the same shall be signed, provided that the works 
contained hereunder have been performed and finished in accordance with 
"TELMEX"'s requirements.  Through this letter the services shall deemed to 
have been accomplished with "TELMEX" conformity.

C. "ACEC" shall provide the Hardware, Software and Services object of this 
"AGREEMENT" at "TELMEX" offices and/or in the places indicated in writing by 
"TELMEX".


                                     -10-
<PAGE>

"TELMEX" shall issue in advance a "Work Order" in which it will specify the 
equipment that shall be installed and where at.  In addition it shall 
coordinate and inform the "TELMEX"'s personnel that shall be responsible for 
providing the operative support required in order for "ACEC" to make such 
installation or group of installations, likewise "TELMEX" shall allow access 
to its installations to "ACEC"'s personnel and shall proceed without delay to 
render the services.

"TELMEX"'s operational support shall be performed in advance upon initiation 
of the installations, in view of the fact that any delay by "TELMEX" shall be 
considered as not attributable to "ACEC" for purposes of compliance with the 
"WORK PROGRAM".

d   "ACEC" is obligated that any alien personnel hired to perform the works 
established in this "AGREEMENT", shall have the necessary immigration quality 
and characteristics for the valid performance of the same, in accordance with 
the provisions of the applicable Mexican laws.  For such effect, "ACEC" shall 
timely perform at its cost, any application, authorization, request or 
proceeding required before the competent authorities-

e.  "ACEC"'s personnel shall perform the works object of this "AGREEMENT" 
complying with the general security measures established by "TELMEX", for the 
access and circulation in the premises of the latter and of those that may be 
provided to them.

f.  In regard to the personnel used by "ACEC" or the services object of this 
"AGREEMENT", "TELMEX" shall at all times the ability to notify to "ACEC" that 
one or more of its employees are not accepted by "TELMEX", being enough for 
this purposes simple written notice justifying the causes or reasons for 
which the replacement of the personnel is requested.  In such event, "ACEC" 
shall remove from "TELMEX" the employees and shall replace them with 
other(s), for the compliance of the purpose of this "AGREEMENT" within the 
time and quality required.  All the expenses related with such change shall 
be borne by "ACEC".

g.  The personnel designated by "ACEC" to perform the purpose of this 
"AGREEMENT" within the Mexican Republic, shall speak, understand and read the 
Spanish language.  Thus all the work performed by "ACEC"'s personnel shall be 
in Spanish language except for those which by their own nature have to be in 
another language.

h.  "ACEC" undertakes to have within the Mexican Republic a permanent 
representative for at least the term of this "AGREEMENT".

i.  In the event of an "upgrade" of the DCMS Lite the conditions established 
in Exhibit 7 hereof shall apply.


                                     -11-

<PAGE>


j. "ACEC" shall additionally have a civil liability insurance to cover the 
damages that "ACEC" might cause to the Hardware and Software or to "TELMEX"'s 
personnel -in the performance of the installation works or during the transit 
at "TELMEX" premises.

CLAUSE FOURTEENTH. - REPORT

"ACEC" hereby is obligated to submit a weekly report before the Approval 
Committee that shall include the advance and final result of the works and 
the activities developed to accomplish the purpose of this "AGREEMENT".  Said 
report shall be enclosed to the invoice for its payment duly authorized by 
the Approval Committee.

"ACEC" shall have the obligation to deliver to "TELMEX" all the information 
related to the status of the performance of the works related to the 
"TELEPROCESS PROJECT" whenever required by "TELMEX", in a term that shall no 
exceed 72 business hours as of the receipt of written request.

CLAUSE FIFTEENTH.- CONVENTIONAL PENALTY

The parties agree that in the event of any delay in any date compromise or 
time to answer deriving from this "AGREEMENT", including the guarantees or 
causes attributable exclusively to "ACEC", it shall pay to "TELMEX" a 
conventional penalty equivalent to 0.066% daily, calculating such percentage 
on the total price of the products (Hardware, Software and/or Services), 
corresponding to the Central in which such delay occurs, in accordance with 
the Purchase Order.

Such conventional penalty shall be subtracted from the payment of the 
corresponding invoice, provided there are bills pending of payment by 
"TELMEX" to "ACEC", otherwise or when the amount of the Conventional Penalty 
is greater than the amount of said invoice, "ACEC" undertakes to deliver to 
"TELMEX", when required by the latter, a cheque in favor of "TELEFONOS DE 
MEXICO, S.A. DE C.V.", for the amount resulting from the delay.

CLAUSE SIXTEENTH.- BOND

"ACEC" shall guarantee the obligations related to this "AGREEMENT" through a 
bond which shall be granted by a Mexican prestige institution, authorized by 
the Ministry of Finance, which shall be issued in favor of and to the 
satisfaction of "TELMEX" pursuant to the following:

a. The bond shall be granted in national currency, for ten percent (10%) of 
the total amount of this "AGREEMENT", considering the exchange rate published 
by Banco de Mexico in the Official Gazette of the Federation on the date of 
issuance of the bond, same 


                                     -12-

<PAGE>


which shall be submitted to the Credit management Office and "TELMEX" 
"AGREEMENT" for its safekeeping, within the following thirty (30) natural 
days to the date of execution of this "AGREEMENT".

b. The bond shall be in order for "ACEC" to guarantee each and every of the 
obligations and conditions of this "AGREEMENT".

c. In the event that the performance of this "AGREEMENT" is extended, the 
corresponding bond shall also be extended.

d. The bond shall be in effect for the term of this "AGREEMENT".

e. The bond guarantying the compliance of this "AGREEMENT" may only be 
cancelled with a written approval of "TELMEX".

CLAUSE SEVENTEENTH. - WARRANTY

a) "ACEC" warranties the Software and Hardware on "site" under normal 
operation conditions, for a term of two (2) years, including labor and the 
materials, as of the date of acceptance of the installation of the Hardware 
and/or Software by "TELMEX".  This warranty also includes that the 
documentation furnished by "ACEC" shall be in conformity with the related 
software.  In the event that "TETMEX" modifies the Application Software, 
"TELMEX" shall lose the functional warranty of the same except for the minor 
changes indicated in Exhibit 5 of training and what is mentioned in paragraph 
j) of this clause.

The Hardware of the DCMS Lite "upgrade", except hard disk, shall have in 
addition to the warranty established in the preceding paragraph, an 
additional limited warranty for three (3) additional years to cover 
manufacturing defects, both in materials and labor.  This warranty is not on 
"site".  "ACEC" undertakes to repair the Hardware having this type of defect 
during years 3, 4 and 5 and not later than thirty (30) business days, once 
the same has been delivered to "ACEC" for its repair together with the 
corresponding warranty claim.

b) In the event that the Software and/or Hardware have design problems 
attributable to "ACEC", it will have the obligation to perform without any 
charge for "TELMEX" all the necessary corrections in a term not longer than 
thirty (30) business days as of the notice by "TELMEX".

It shall perform the updating and corrections necessary in the Software in 
order to comply with the specified Software.  Design corrections shall be 
made to the Hardware including the replacement of the whole board or 
equipment-


                                     -13-

<PAGE>


Software and Hardware design corrections shall be made at the switch 
previously designated by "TELMEX" in which the equipment is installed and the 
error shall be repaired until the purpose of this "AGREEMENT" is 
satisfactorily achieved.

Given that the system allows it, any updating to the Software it may be made 
remotely, provided that the purpose of the "AGREEMENT" is fulfilled at all 
timed.

c)  During the warranty term, "TELMEX" may return to "ACEC" any defective 
magnetic means, which may be replaced at no cost within the following thirty 
(30) business days after the date of return and in the event that the content 
of the documentation is not in conformance with the content of the Software, 
"ACEC" undertakes to make any required modifications or to replace the 
documentation and/or software with the thirty (30) business days from the 
notice.

d)  In the event of a breach to the warranty and to the terms and date 
compromises established in this "AGREEMENT", and which substitution was not 
possible, nor the repair of the Software or Hardware, the penalties indicated 
in the Conventional Penalty Clause shall apply during all the time in which 
the failure or problem is present.  In the event of such substitution or 
repair is not possible whether for "TELMEX" decision or by notice of "ACEC", 
"TELMEX" may proceed to what is provided in the Causes of Termination Clause 
and/or Use the corresponding bond.

e)  "ACEC" warrantees only the DCMS Hardware and DCMS Lite Hardware, the 
software, the documentation and the installation of the system.  In the event 
that "ACEC" investigates a warranty claim that thereafter results being a 
problem not related to "ACEC", dully justified before "TELMEX", "ACEC" shall 
bill "TELMEX" for the labour required in such investigation at the labor 
prices published in this "AGREEMENT", being entitled to bill no more than 
five (5) hours for each event.

f)  "ACEC" shall make any correction to the hardware or software on "site" 
(if required), provided they are not of design, in accordance with the 
criteria established in Exhibit 8, provided "TELMEX" allows access to the 
switch and the corresponding operational support, with the purpose of 
guarantying the continuous operation of the system.  The time to answer and 
repair the Hardware and Software shall be initiated immediately at any time 
between 9AM and 6PM.  Mexico City time, from Monday to Sunday all year round. 
"TELMEX" and "ACEC" undertake to design proceedings in order for "TELMEX" to 
be able to report the failures under the same may be timely solved.

"ACEC" shall also render preventive maintenance services to the Hardware 
during the warranty term and "TELMEX" has the option at the end of said term 
to acquire maintenance services.


                                     -14-

<PAGE>


g) "TELMEX" shall furnish the name of the individual who will be responsible 
in each region of "TELMEX" together with a back-up who shall be in charge of 
the telephone operation -in the "TELMEX" switch.

h) "ACEC" shall replace any part used in "TELMEX" inventory during the 
warranty term in less than two (2) business days.

i)  "TELMEX" and "ACEC" shall establish a priority of warranty service for 
switch in accordance with the criteria established in Exhibit 8.

j) In the event of new applications, the software warranty is maintained 
provided that the new application is validated with "ACEC" prior to the 
initiation and the end, with the purpose of validating the functionality and 
interoperability, in order to avoid an impact on the applications and the 
Software of the system.  The analysis, design, development and installation 
of these new applications shall be made exclusively by "TELMEX" s personnel.  
"ACEC" undertakes to participate in this validation process, in accordance 
with a methodology to avoid loosing the warranty with the development of new 
applications by "TELMEX" during the term of this "AGREEMENT" and the 
warranties.

CLAUSE EIGHTEENTH. - INFORMATION AND CONFIDENTIALITY

"Confidential Information" means the prices or information relating to the 
new products of the supplier, industrial and trade secrets and any other 
property:( right, and any business, market or technical information disclosed 
by the parties in connection with this "AGREEMENT", identified in writing as 
confidential by the owner.  This term does not include information in the 
public domain or which may have been legally disclosed to third parties after 
the execution of this "AGREEMENT" or made of the public domain by any 
individual or through other any act not included within those prohibited or 
not authorized in the terms of this "AGREEMENT".

All the information and documentation delivered between both parties pursuant 
to this "AGREEMENT", shall be considered Confidential, therefore neither 
party may disclose it to third parties by any means whether oral magnetic or 
written.

Both parties are obligated not to copy, disclose, distribute, reveal, 
communicate, or transfer any mean or manner in general and not to disclose 
directly or indirectly through its personnel or third parties the 
confidential information provided by any of the parties or to which it may 
have had access as a consequence of this "AGREEMENT", except when required 
for the execution of the "TELEPROCESS PROJECT", except with a written 
authorization from the party issuing the documentation.


                                     -15-

<PAGE>


Both parties consider as confidential all the information received by the 
other party, related to this AGREEMENT and undertake to apply the provisions 
which are usually used for the protection of the secrecy of their own 
documents and information.

Especially, both parties shall inform to the members of their personnel and 
authorize third parties having access to the documents and the information 
from the other party, of prohibition to disclose them to third parties in 
whole or in part through one manner or another.

CLAUSE NINETEENTH. - COPYRIGHTS

Copyrights of the Application Software, once finished based on "TELMEX" 
requirements and which are paid by the latter, including the source programs, 
purpose programs and documentation developed under the "TELEPROCESS PROJECT" 
described in Exhibit 1, including the "Documentation" shall be of "TELMEX".

Property Rights of the programs, routines, applications and tools that belong 
to "ACEC" and/or to third parties prior to the execution of this "AGREEMENT", 
including SBE TCP/IP, QNX, SOFTWARE QNX, AEG, MODCOMP UNIX, MOTOROLA M68, 
Marben FTAM, ANMS AND THE SYSTEM SOFTWARE, shall continue being property of 
"ACEC" or third parties.

Both parties acknowledge that any additional program that may be developed 
for the account of "TELMEX" to supplement or improve the reliability of the 
Software developed shall be the property of "TELMEX".

Except for the already existing programs, routines and applications at the 
time of execution of this "AGREEMENT" belonging to "ACEC" and/or to third 
parties, "ACEC" shall not assign, license, transfer or commercialize the 
Application Software without the prior written authorization of "TELMEX" and 
when this event occurs "ACEC" shall pay to "TELMEX" the corresponding 
royalties in the form and amount mutually agreed.

"ACEC" is solely liable for the copyrights in the use of the Software and 
tools utilized or furnished by it to deliver the purpose of this "AGREEMENT".

"ACEC" states under oath that it has the corresponding authorization to 
license the software SBE TCP/IP, QNX, SOFTWARE QNX, AEG, MOD COM UNIX, 
MOTOROLA M68, MARBEN FTAM and any other that it may use to comply with this 
"AGREEMENT".

Within the following one hundred and twenty (120) days from the execution of 
this "AGREEMENT", "ACEC" shall deliver to "TELMEX" copy of the documents 
evidencing the authorizations that it has to license or sublicense the 
Software mentioned in the preceding paragraph, dully certified by the 
Secretary of "ACEC".


                                     -16-

<PAGE>


In addition, in connection with ANMS SOFTWARE, the System Software and the 
tools and applications previously developed by "ACEC", "ACEC" hereby 
undertakes to deliver to "TELMEX" within the following one hundred and twenty 
(120) days from the execution of this "AGREEMENT" copies of the copyrights 
registrations corresponding to these products.  This date compromise shall be 
subject to the penalties indicated in the Conventional Penalty Clause except 
for a cause of Force Majeure.

"ACEC" warrants that it is the holder of the ANMS Software Rights, System 
Software and its tools and applications previously developed, therefore in 
the event that an individual files a claim in regard to the intellectual or 
industrial property rights in connection with the Software purpose of this 
"AGREEMENT", "ACEC" undertakes to maintain "TELMEX"'s interests safe.  
"ACEC"'s responsibility established in this paragraph shall be applicable 
provided that "TELMEX" a) notifies in writing to "ACEC" of the claim or law 
suit filed against it and b) allows "ACEC" the defense of the same.

"ACEC" has the express authorization to license the software purpose of this 
"AGREEMENT", including Software SBE TCP/IP, QNX, SOFTWARE QNX, AEG MODCOMP 
UNIX, MOTOROLA M68, MARBEN FTAM consequently if it is considered that such 
software is an invasion of the rights of third parties and the use of the 
same is prohibited, "ACEC" shall obtain for "TELMEX" the right to continue 
using the Software which was licensed, or if applicable it shall replace it 
with a substitute that does not invade the protected Software, or it may 
modify such Software in such a manner that it does not invade the rights of 
third parties or, finally, with the written authorization of "TELMEX" it 
shall remove the software and return to "TELMEX" the total price of the 
corresponding software based on "ACEC"'s list of prices then in effect this 
regardless of the loses or damages caused to "TELMEX" for this cause.

CLAUSE TWENTIETH. - PRIOR TERMINATION

"TELMEX" may terminate this "AGREEMENT" in whole or in part, without a court 
order by a written notice with at least thirty (30) calendar days prior to 
the termination date.  Within the following two (2) days of the written 
notice notice the parties shall meet to define by mutual agreement a work 
program to be performed by "ACEC" during this last (30) thirty days

In the event of prior termination of this "AGREEMENT", "TELMEX"'s obligation 
to pay the work performed until the date the termination of the "AGREEMENT" 
is effective and "ACEC"'s obligation to maintain the corresponding warranties 
shall remain valid.

In the event of "Purchase Orders" in process, their suspension or conclusion 
shall be mutually agreed and the corresponding payment shall be negotiated.


                                     -17-

<PAGE>


CLAUSE TWENTY FIRST. - RESPONSIBILITY

"ACEC" is liable before "TELMEX" of all the loses and damages that it may 
cause, without prejudice of the legal actions to which it may be entitled to, 
in the event of non-compliance with this "AGREEMENT", as well as for 
negligence, lack of skill or dolus, without prejudice of the penalties in the 
event of crimes, notwithstanding the foregoing, both parties agree that under 
no circumstance "ACEC"'s responsibility shall be for an amount greater than 
the total value of this "AGREEMENT".

"ACEC" is liable to "TELMEX" for all the Hardware and Software that "ACEC" 
sells, licenses or sublicenses to "TELMEX", as well as the training and 
warranty which are provided by "ACEC".

"TELMEX" shall be responsible for the safekeeping and physical wholeness of 
the Hardware and Software when the same are within its premises and have been 
electrically installed pursuant to the indications of the "Work Order" of 
"TELMEX", to the satisfaction of the latter and provided that the damages 
caused to the Hardware and Software are not caused by "ACEC".  For these 
purposes, "ACEC" shall be obligated to obtain broad and sufficient insurance 
to protect at all times and until its delivery and electrical installation in 
the final place at "TELMEX" premises, the physical wholeness of "TELMEX"'s 
Hardware and Software, from the occurrence of any type of accident, loss, or 
theft.

"ACEC" has the obligation of repairing the Hardware and Software that it 
supplies to "TELMEX" or to correct the services, in the event of failure, in 
accordance with the conditions and the times of answer mentioned in the 
Warranty Clause of this "AGREEMENT", depending, on the type of problem and 
switch.

"ACEC" is not liable for any delay in the delivery or installation of the 
Hardware and Software when these are attributable to "TELMEX", prior evidence 
of the causes.

"ACEC" is not liable before "TELMEX" for any incidental or consequential 
damages caused for the inadequate operation by "TELMEX" of the equipment and 
Software supplied by "ACEC", prior evidence to "TELMEX" of said inadequate 
operation.

"ACEC" is not liable of "TELMEX" telephone operation, including the lack of 
or bad performance by "TELMEX" of the proceedings established that derive 
from a loss of data or of the impossibility to recover such data in the event 
that one of the products of "ACEC" is totally or partially out of order, even 
for a problem in the installation, repair or manufacturing both of the 
Hardware or Software, independently of the time of duration of such 
condition.  "ACEC- shall not be liable if such proceedings are non-existing 
or not established.

"ACEC" is not liable for the cost of operating the Hardware and software 
provided by "ACEC".


                                     -18-

<PAGE>


During the engineering stage of the "TELEPROCESS PROJECT", including the 
placement of the Hardware and Software through the DCMS Lite, "ACEC" shall 
jointly perform with "TELMEX" tests to the equipment under "TELMEX" 
supervision.

The loss of data or unrecovered data that may occur between the delivery of 
the equipment and Software to the final acceptance of the same, independently 
of the time when the same occurs, shall be considered as part of the tests.  
"TELMEX" shall have operational proceedings to preserve the data during this 
stage of the "TELEPROCESS PROJECT", without any liability whatsoever for 
"ACEC".

CLAUSE TWENTY SECOND. - LABOR RESPONSIBILITY

"ACEC" is obligated to provide the services purpose of this "AGREEMENT" in a 
personal manner and with the specialized personnel necessary for the 
compliance of the same.

"ACEC" as contractor and employer of the personnel that it will use for the 
works deriving from this "AGREEMENT", shall be solely liable of the 
obligations deriving from the legal provisions and other regulations in the 
area of labor and social security.

"ACEC" undertakes the  responsibility of all the claims filed against it or 
against "TELMEX" by its employees in connection with the works deriving from 
this "AGREEMENT".

Under oath an in terms of article 13 of the Federal Labor Law, "ACEC" states 
that it has sufficient elements of its own to comply with the obligations 
deriving from the relation with its employees and consequently is the only 
employer of each and everyone of the individuals that it has hired to 
participate in the development and performance of the purpose of this 
"AGREEMENT", releasing "TELMEX" from any labor liability whatsoever.

CLAUSE TWENTY THIRD.- SUBCONTRACTING AND ASSIGNMENT OF RIGHTS

"ACEC" shall not subcontract in whole or in part the obligations of this 
"AGREEMENT" with any other individual or entity, nor assign the rights 
deriving hereunder, except when there is a prior and written "AGREEMENT" 
between the parties.


                                     -19-

<PAGE>


CLAUSE TWENTY FOURTH.- FORCE MAJEURE

In the event of an act of God or force majeure that could partially or 
totally prevent the execution of this "AGREEMENT", the same may be terminated 
by any of the parties through a written notice within the following five (5) 
calendar days after this circumstance has occurred, undertaking the parties 
to make the required adjustments to the payments for the work already 
performed.

"ACEC" shall be subject to the conventional penalties mentioned in the 
Conventional Penalty Clause, to guaranty the compliance of the time of 
delivery or any date compromised, provided this delay does not derive from 
any cause of force majeure such as a natural disaster, violence, political 
disorder, temporary or permanent close of customs and airports, amendments to 
the customs or copyrights law, amendments or creation of new taxes that 
notoriously affect the costs, crimes and/or accident that totally or 
partially prevents "ACECI"'s activities as well as other causes of force 
majeure.

In case of an event of this nature, "ACEC" shall submit to "TELMEX" in 
writing a detailed report of the status with sufficient and complete evidence 
to the satisfaction of "TELMEX", and at the option of "TELMEX" it shall 
proceed to cancel this "AGREEMENT" in accordance with the first paragraph of 
this clause or extend the corresponding term without any penalty.  In the 
event that no satisfactory evidence is submitted it shall proceed to apply 
the conventional penalties in accordance with the Conventional Penalty Clause 
of this "AGREEMENT".

CLAUSE TWENTY FIFTH. - CAUSES OF TERMINATION

"TELMEX" may terminate this "AGREEMENT" immediately, without a court order 
through a written notice, in the following cases:

a) For breach of any of the obligations established in this "AGREEMENT".

b) For a court or executive order or resolution requesting them to do so.

CLAUSE TWENTY SIXTH. - ACKNOWLEDGEMENT

This "AGREEMENT" is the entire understanding between the parties, in relation 
with the purpose of the same and supersedes any other negotiation, obligation 
or communication among them, whether oral or written prior to the date of its 
execution.

CLAUSE TWENTY SEVENTH. - NOTICES

For purposes of this "AGREEMENT" the parties designate following domiciles:


                                     -20-

<PAGE>


" "TELMEX" "
Telefonos de Mexico, S.A. de C.V
Rio Panuco No 71
Col. Cuauhtemoc
Cp 06400, Mexico, D. F.
Attn.  Ing. John Locus

" "ACEC" "
AMERICAN COMPUTER AND ELECTRONICS CORPORATION
209 Perry Parkway
Gaithersburg, Maryland, 20877
United States of America
Attn:  Mr. Thomas Russotto

All notices required hereunder shall be addressed to the above mentioned 
domiciles and sent through fax, personally, registered air mail return 
receipt requested, or by express courier service and shall be deemed to have 
been received at the time of its delivery or confirmed receipt.  Any change 
of domicile shall be notified to the other party with at least fifteen (15) 
business days in advance from the date on which such event should occur, 
otherwise all the notices and communications shall be legally effective on 
the date of delivery at the registered domicile.

CAUSE TWENTY EIGHTH. - AMENDMENTS

This "AGREEMENT" may be amended or modified at any time provided the parties 
mutually agree to do so in writing.

CLAUSE TWENTY NINTH. - DISPUTE RESOLUTION

The parties shall submit everything related to the validity, intent, 
construction, execution, compliance and arbitration of this "AGREEMENT" and 
any of its terms and for the resolution of all the disputes, controversies, 
or differences that may derive directly or indirectly from this "AGREEMENT" 
before two high officials of "TELMEX" and "ACEC", who shall be empowered to 
solve the controversy in an amicable manner.  If there is no solution to the 
controversy within the following fifteen (15) calendar days on the date one 
of the parties notifies the other of the existence of said controversy, 
difference or dispute, the same shall be solved in a final manner through 
arbitration proceedings at law, expressly agreeing to the rules of procedure 
and the arbitration in general shall be conducted pursuant to the Regulation 
of Conciliation and Arbitration of the International Chamber of Commerce 
(ICC).


                                     -21-

<PAGE>


The arbitration shall be conducted in Spanish and shall be held in Mexico 
City.  The applicable law to the arbitration shall be Mexican Law.  The 
arbitration shall be decided by three arbitrators, one designated by each of 
the parties and the third one designated by the two arbitrators selected by 
such parties.  If one of the parties does not appoint its arbitrator within 
the following fifteen (15) business days following the date on which the 
request for arbitration from the other party is notified, or if the two 
arbitrators, within the following fifteen (15) business days after their 
designation do not reach an "AGREEMENT" about the third arbitrator, then the 
Mexican Chapter of the International Chamber of Commerce or in lack or excuse 
thereof, the Court of Arbitration of the same Chamber shall designate the 
third arbitrator, as the case may be, in accordance with the provisions of 
said regulation.  The arbitration shall be decided within a term that shall 
not exceed sixty (60) business days from the date the arbitral proceedings 
are initiated and shall be managed by the arbitrators.  The arbitral award 
shall be final and binding between the parties and may be filed by any of the 
parties for its execution before any court, with competent jurisdiction and 
the parties agree to expressly submit to the jurisdiction of such court only 
for the purposes of executing this arbitral clause and any award based on the 
same.  The parties hereby expressly waive the right to appeal.  The parties 
shall decide any matter pursuant to the rules of law, except that, in a later 
written "AGREEMENT", as the case may be, the parties agree that it is solved 
through amicable composition or arbitration or through a resolution or "fallo 
en conciencia".

Having read this "AGREEMENT" and being no error, dolus, bad faith or 
violence, the parties executed in duplicate in Mexico City Federal District 
on October 11, 1995.

" "TELMEX" "                              " "ACEC" "

/s/ Adolfo Cerezo Perez                   /s/ Thomass Russotto
- -----------------------------------       -----------------------------------
Ing. Adolfo Cerezo Perez                  Mr. Thomass Russotto
Director of Finance and                   Vice-president
Management

/s/ Carlos Aguerrebere Barroeta 
- -----------------------------------
Ing. Carlos Aguerrebere Barroeta
Director of Systems

/s/ Isidoro Ambe Attar
- -----------------------------------
Lic. Isidoro Ambe Attar
General Subdirector of Supply


                                     -22-

<PAGE>


                    EXHIBIT l. - DESCRIPTION OF THE PROJECT

"ACEC" shall supply and install DCMS mediation devices and DCMS Lite upgrades 
for existing equipment in the digital switches designated by TELMEX, in 
accordance with this description, utilizing ports of tape and X.25, through 
which it shall obtain detailed billing records.  The project includes the 
software of the system used to obtain and manage said information, the 
transfer of the same and in addition the development of a series of 
applications of software described below as well as a maintenance of the 
system as a whole.  For purposes of the management of the system a network 
supervision software shall be installed.

SOFTWARE APPLICATIONS

All the software applications described below shall be developed in 
accordance with the life cycle of the systems indicated in the corresponding 
table in Exhibit 4 of the Work Program.   Within this process the 
requirements-AL-s of each application shall be precisely defined to the 
satisfaction of TELMEX.

MESSAGE RATING - 

Message rating is the process of taking the detail call record information 
collected at the switch and applying billing charges that can be used in the 
creation of customer bills.  The rating algorithm works as follows:

The originating and terminating phone numbers are looked up in so-called 
"Horizontal and Vertical Tables (V&H tables)", which place each call into a 
mileage group.  The mileage group is then looked up in a rate table, which 
tabulates the prices charged by long distance carriers per circuit mile.  
This value is then multiplied by the duration of the call, to produce a rated 
record.

TELMEX (or a third-party source) will have to provide to ACEC their 
Horizontal and Vertical tables, the rate tables or its custom message rating 
algorithms in order for this software to correctly calculate and apply rates.

CREDIT LIMIT CHECKING -

Credit limit checking is an extension of the message rating process for 
specific billing accounts identified by the user.  The DCMS will maintain a 
database of specific customers, their credit limit, and current usage value 
for customer messages.  The number of customers on the credit watch list will 
be manageable, no more than approximately 1,000 per switch.  On a 
time-available basis, the DCMS will read through the collected call record 
files, looking for the phone numbers on the credit watch list.  If found, the 


<PAGE>


credit database will be updated with a new usage figure.  The credit limit 
function will work in conjunction with the ANMS software application.

If the accumulated message usage figure exceeds the established credit limit 
specified for a customer, the DCMS will trigger a software alarm, which will 
be passed through ANMS to the management console for further action by the 
TELMEX.

RECORD REFORMATTING, SEPARATION, AND FILTERING -

Record reformatting consist of applying TELMEX's defined parameters to the 
polled file.

The reformatting proceeds in a straightforward way: given an input record 
format, an output record format, and algorithms needed to convert between the 
two, the application within the DCMS processes each call record into the new 
format.

Separation and filtering works by looking through each record for certain 
features -- a phone number, a test string, or other TELMEX definable item.  
If found, the record is copied to a separations file for transmission and use 
by a customer provided systems capable of acting upon the file.

TELMEX has control over how the separations file is subsequently handled.  
Usually, separations files are sent via the DCMS auto transmission function 
using FTP to some other computer system.

RECORD VALIDATION

The mechanisms of record validation and error checking vary depending on what 
kind of processing is being performed.

TELMEX provided specifications are required to adequately perform record 
validation to meet customer expectations.  During data collection, the DCMS 
uses 1) the data transfer protocol, and 2) the auditing markers in the tape 
data to determine whether it received records correctly.

The data transfer protocol ensures that the DCMS receives what the switch 
sent; the auditing markers ensure that what was received makes sense.

ERROR CHECKING ALARMS AND AUTO TRANSMISSION -

The call record data passing through the DCMS/DCMS Lite is checked against a 
set of predefined, TELMEX provided, conditions.  When software detects that 
one or more of the conditions are not met, and error is detected and entry is 
 .Logged in the error file 


                                      -2-
<PAGE>


contained in the DCMS.  As the error file becomes full, an alarm is triggered 
that signals the local operator via a local alarm and the centralized ANMS 
system that a problem exists.  Other alarms are monitored as well including 
memory failure, input interface failure, output interface failure, no serial 
port response, failure of communications link, failure of the disk system, 
disk close to full condition, And application software alarms.

Auto transmission of detail call records is done through a software 
application resident within the DCMS/DCMS Lite.  Through a TELMEX defined set 
of selection parameters, call record data is selected and passed to the auto 
transmission application that immediately forwards the information to a 
pre-define location for immediate action and/or further processing.  The auto 
transmission software application resident on the DCMS/DCMS Lite acts on a 
near real-time basis for the immediate transmission of data selected based 
upon a predefined criteria.

NETWORK MANAGEMENT SOFTWARE.

AMAT Network Management System (ANMS)-

ANMS is a proprietary software application that provides a centralized 
command center for the management of AMA billing networks.  The ANMS 
application is capable of remotely updating and administering the operations 
of the DCMS/DCMS Lite and polling system, UPS32.  ANMS presents a real-time 
window into the state of the DCMS/DCMS Lite network deployed for data 
collection across the whole of the TELMEX digital switching telephone 
network.  Through the use of on-line screens and commands at a centralized 
location, ANMS tracks alarms, can alter operational parameters updates 
transmitter software, analyzes polled data traffic patterns, and tracks and 
reports maintenance needs within the DCMS/DCMS Lite network.

ANMS will be implemented with a direct interface to DCMS and DCMS Lite using 
"ACEC"s" proprietary communications protocol.

ACEC will provide TELMEX with basic SNMP agents on the DCMS Lite and ANMS, as 
well as training and mechanisms to develop new agents in the DCMS Lite.  ANMS 
will be implemented with direct interface to the DCMS and DCMS Lite.  ANMS 
installed using the ACEC proprietary communication protocol.  TELMEX has 
agreed to be a beta test site for the next release of the ANMS software 
system, at no additional cost to TELMEX.  Therefore TELMEX has a right to the 
following ANMS license without additional charge.

SOFTWARE OF THE SYSTEM

Both, DCMS and DCMS Lite have a software which is owned by ACEC that is 
denominated "Software of the System".  This software includes the storage and 
delivery 


                                      -3-

<PAGE>


routines, the management software for the system, diagnosis and maintenance 
software and automatic alarm report software.  The functions of this software 
are mentioned in more detail in the description of the DCMS and DCMS Lite 
products.

DESCRIPTION OF DCMS

This document provides physical, functional and descriptive information about 
the DCMS (Distributed Call Measurement System).  The DCMS is an advanced, 
microprocessor based data collection, storage, transmission, and processing 
system for telephone billing data.

The DCMS is a special-purpose microprocessor based computer designed to 
collect, store and process call accounting data obtained from telephone 
company central office digital switching systems.  The DCMS then makes the 
data available to a central data collection facility.

The DCMS can collect, store and process call data for long distance calls, 
local calls (when local call detail is available) , and store the processed 
data on non-volatile, mass storage disks.

These disks are available with formatted capacities of 1 Gbyte.  The call 
data can be stored in the specific format output by the switch, in Bellcore 
AMA Format (BAF) or in a format designed and specified by the customer.  In 
addition, TELMEX will use another four record formats which will be between 
40 bytes and 336 bytes.  TELMEX will provide information about this records 
during the duration of the project.  Both local messages and long distance 
call records can be compressed by eliminating redundant and/or unnecessary 
data to increase the call record storage capacity in the same disk space.

The DCMS normally stores data as it receives from the switch and then edits 
it before committing the data to long-term storage.  This editing, at the 
TELMEX option, can include the selective filtering and elimination of 
uncompleted calls, abandoned calls and calls below a specified minimum 
duration.  Editing may also include partitioning (user-specified) of records 
for switch traffic or maintenance data or alarm messages.

When required, the DCMS can examine the switch input in realtime and output 
information via an RS-232 port based on the input received.

The DCMS has the ability, at the customer option, to rate (price) both local 
and long distance calls based on user specifications and/or the industry 
standard tables.

TELMEX specific message rating algorithms can be customized into the rating 
system.  When call rating is performed, the price data is stored as part of 
the output call record.


                                      -4-

<PAGE>


Transmission of the call record data to a central facility is generally 
initiated by the remote computer system.  The call data may be sent via the 
dial-up network or dedicated (private network) facilities.  The DCMS is 
capable of transmitting data over a variety of networks.  The DC74S 
configuration being proposed will use Ethernet TCP/IP for the movement of 
data.

The DCMS has been designed to provide a very high level of reliability.  The 
system contains embedded diagnostic software that can identify and isolate 
faults and failures down to the replaceable printed circuit board level.  
Diagnostic and maintenance procedures can be performed both locally or 
remotely via an optional RS-232 terminal.

The DCMS operational software will detect problems and generate and output 
alarms for conditions such as:

   -   Memory board failure
   -   Input interface failure
   -   Output interface failure
   -   Communications link failure
   -   Disk subsystem failure
   -   Disk approaching full capacity

These alarm conditions are signaled visually, audibly, and via relay 
contacts.  They are reported locally and/or remotely to an RS-232 terminal or 
printer.  These alarms can be managed centrally and automatically using an 
appropriately configured alarm monitoring computer system such as our AMAT 
Network Management System (ANMS).

Mirror disk subsystems for mirrored data storage are available with the 
simplex DCMS.

The mirror disk subsystem records all data to two separate disk subsystems 
within the same chassis.  Mirror disks provide an additional level of 
redundancy for the only moving part of the DCMS.

The DCMS is designed to interface to most types of telephone switches.  The 
files of the central are collected via the magnetic tape output port 
(denominated P:)C or MTE), or a serial output port using a communication 
protocol such a RS232 or through protocols MTP, MNP, or FRAM.  In the event 
the magnetic tape output port is used, the serial port RS232 may be used to 
send commands.  In the case of TELMEX the switching vehicles to which the 
DCMS can be interfaced are:

Ericsson AXE 10
Alcatel S12
Northern D14S 200
AT&T 5ESS


                                      -5-

<PAGE>


All DCMS components are provided in a standard 19-inch rack configuration.  
The DCMS can also be housed in a stand-alone cabinet, to be supplied by ACEC.

The basic DCMS is composed of the following components:

   -   1911 Custom chassis
   -   Power converter module
   -   Switch interface module
   -   Monoboard computer module
   -   Communication subsystem
   -   Modem subsystem
   -   Winchester disk drive and interface
   -   System monitor/alarm panel
   -   Terminal/printer interface

The main processor complex of the DCMS consists of a monoboard computer 
operating a high-speed 32-bit microprocessor.  The monoboard computer also 
has a real-time clock for time-keeping, a watchdog timer for casualty 
testing, interval timers for task scheduling, and four RS-232 ports for 
initialization, diagnostics, debugging and interprocessor communications.  
The monoboard computer connects to other components via a VME bus.

Ethernet networking facilities, a printer interface, four RS232 ports, and 
the SCSI (Small Computer System Interface) high-speed peripheral bus are 
included on the DCMS monchoard CPU.

The DCMS uses UNIX System V with real-time extensions.  UNIX is a 
multitasking operating system with support for multiple users, three levels 
of access security, and task prioritization.

The DCMS comes equipped with 8MB of DRAM although an additional 8MB are 
available as an option in the customer requested configuration.  The DPAM is 
the buffer memory for call record storage.

The main processor complex backplane which interconnects the 
microprocessor(s), the system monitor and high-speed peripherals is the VME 
bus.

A power converter module is provided with the main processor complex.  The 
power converter module is provided as a "plug-in" module.

The power converter provides up to 350 watts of +5VDC, +12VDC and -12 VDC.


                                      -6-

<PAGE>


A Simplex DC14S Configuration, like the ones included in this agreement has 
the following:

lpc.     32 Bit Processing Unit Including
         A self backed box in accordance with "TELMEX" specifications
         Processor with 256k ROM, 8MB DRAM
         Power converter
         Multi-slot chassis
         Output port RS-232
         Administrative port with V-22 modem
         Console Interface
         Disk Interface
         System Monitor Board
         -Store-and-forward software
         -Administration software
         -Maintenance diagnostics software
         -Automatic alarm reporting software
         24 month warranty

         Cable up to 151 in the case of tape port and up to 1001 in the case 
         of X.25 port.

optional features that may be added to the DCMS

8 MB RAM
Disk Mirroring
30 ft. Cables with signal amplification for MTE 50 ft. Cables with signal 
amplification for MTE
X.25/FTAM protocols
X.25/MNP protocols


DESCRIPTION OF DCMS LITE

This document provides the physical, functional and description of the DCMS 
Lite (Distributed Call Measurement System Lite).  The DCMS Lite is a 
proprietary software application that provides a centralized command center 
for the management of AMA billing networks.

The DCMS Lite application shall be implemented through the execution of an 
"upgrade" to "TELMEX" existing equipment utilized in the SML system (Local 
Measure Service) which are formed by industrial PC's supplied by Pro-Log 
Corp. All the functions mentioned in the following paragraphs shall be 
available after performing the "upgrade".


                                      -7-

<PAGE>


The DCMS Lite is based in a special purpose computer designed to interface 
with digital telephone switches, obtain the billing data and process them.  
The DCMS Lite makes this data available to the higher collection equipment.

The DCMS Lite can collect, store and process long distance and local calls 
data (provided the latter are available) the processed data on nonvolatile, 
mass storage disks.  These disks are available with formatted capacities of 
0.5 Gbyte.  The call data can be stored in the specific format output by the 
switch, in Bellcore AMA Format (BAF) or in a format designed and specified by 
the customer.  In Addition, "TELMEX" will use another four record formats 
which will be between-40 bytes and 336 bytes.  "TELMEX" will provide 
information about this record during the duration of the project.  Both local 
messages and long distance call records can be compressed by eliminating 
redundant and/or unnecessary data to increase the call record storage 
capacity in the same disk space.

The DCMS Lite normally stores data as it receives from the switch -and then 
edits -it before committing the data to long-term storage.

This editing at the customer option, can include the selective filtering and 
elimination of uncompleted calls, abandoned calls and calls below a specified 
minimum duration.  Editing may also include partitioning and calls below a 
specified minimum duration.  Editing may also include partitioning 
(user-specified) of records for switch traffic or maintenance data or alarm 
messages.

When required, the DCMS Lite can examine the switch input in real-time and 
output information via an RS-232 port based on the input received.

The DCMS Lite has the ability, at the customer option, to rate (price) both 
local and long distance calls based on user specifications and/or the 
industry standard Vertical and Horizontal (V&H) Coordinate Tables.

Customer specific message rating algorithms can be customized into the rating 
system.  When call rating is performed, the price data is stored as part of 
the output call record.

Transmission of the call record data to a central facility generally 
initiated by the remote computer system.  The call data may be sent via the 
dial-up network or dedicated (private network) facilities.

The DCMS Lite is capable of transmitting data over a variety of networks.  
The DCMS Lite configuration being proposed will use Ethernet TCP/IP for the 
movement of data.

The DCMS Lite has been designed to provide a very high level of reliability.  
The system contains embedded diagnostic software that can identify and 
isolate faults and failures down to the replaceable printed circuit board 
level.  Diagnostic and maintenance procedures can be performed both locally 
or remotely via an optional RS-232 terminal. 


                                      -8-

<PAGE>


The DCMS Lite operational software will detect problems and generate and 
output alarms for conditions such as:

   -   Memory board failure
   -   Input interface failure
   -   Output interface failure
   -   Communications link failure
   -   Disk subsystem failure
   -   Disk approaching full capacity

These alarm conditions are signaled visually, audibly, and via relay 
contacts.  They are reported locally and/or remotely to an RS-232 terminal or 
printer.  These alarms can be managed centrally and automatically using an 
appropriately configured alarm monitoring computer system such as our AMAT 
Network Management System (ANMS).

Mirror disk subsystems for mirrored data storage are available with the 
simplex D04S.  The mirror disk subsystem records all data to two separate 
disk subsystems within the same chassis.  Mirror disks provide an additional 
level of redundancy for the only moving part of the D04S Lite.

The DCMS Lite is designed to interface to most types of telephone switches.  
Stored Program Control (SPC) switch output is collected via the magnetic tape 
output port or a serial output port using a communication protocol such a MTP 
or FTAM.  The following identifies the switching vehicles to which the DCMS 
can be interfaced are:

Ericsson AXE 10
Alcatel S12
AT&T 5ESS

All DCMS Lite components are provided in a standard 19-inch rack 
configuration.  The DCMS Lite can also be housed in a stand-alone cabinet, to 
be supplied by TELMEX.  Custom mountings can be readily accommodated.

The basic DCMS Lite is composed of the following components:

   -   Custom chassis (available at TELMEX)
   -   Power converter module (available at TELMEX)
   -   Switch interface module (to be supplied with upgrade kit)
   -   Monoboard computer module (to be supplied with upgrade kit)
   -   Communication subsystem (to be supplied with upgrade kit)
   -   Modem subsystem (available at TELMEX)
   -   Winchester disk drive and interface (to be supplied with upgrade kit)


                                      -9-

<PAGE>


   -   System monitor or/alarm panel (partially available at TELMEX)
   -   Terminal/printer interface (to be supplied with upgrade kit)

In order  to perform the "upgrade", "TELMEX"  guarantees to have in operation 
condition the following hardware in, each switch where the "upgrade" is to be 
performed:

1pc.    7872 CPU with 386 processor 2 MB RAM, 25 or 33 Mhz
1pc.    7325 V.22 or 7326 modem
1pc.    7316 serial card with 4 RS232 ports
1pc.    7909A termination board
1pc.    BX15R-01  rack
1pc.    48 VDC power supply (in-rack or external)
1pc.    Break out panel with 2 RS232 ports and keyboard interface
1pc.    Floppy disk unit 3.511
1pc.    On/Off switch (In-rack  with power supply or external)
1pc.    19" box made of extruded aluminum, self-clinching screws, 6 PC. RS232, 
        Ethernet and power connectors, fan and mounting rails
1pc.    QNX operating system version 2.1 or 2.15

The "upgrade" will be accomplished by installing the following parts:

1pc.    7874 CPU with 486DX2 processor 16MB RAM, 66 MHz
1pc.    7331A Ethernet interface card
1pc.    Switch interface card - either X.25 or MTE/PDC
1pc.    SCSI disk 500 MB
1pc.    SCSI 500ME mirror disk (optional)
1pc.    DAT unit (optional)
1pc.    External alarm module
1pc.    QNX operating system version 4.2 or higher
1pc.    System Software ort and up to
1pc.    Cable up to 15' in the case of tape port and up to 100' in the case 
        of X.25 port.

The main processor complex of the DCMS Lite consists of a "monoboard" 
computer operating a high-speed 32-bit microprocessor.  The "monoboard" 
computer also has a real-time clock for time-keeping, a "watchdog timer" for 
casualty testing, interval timers for task scheduling, and four RS-232 ports 
for initialization, diagnostics, debugging and interprocessor communications. 
The "monoboard" computer connects to other components via a STD bus.

Printer interface, two RS-232 ports, and the SCSI (Small Computer System 
Interface) high-speed peripheral bus are included on the DCMS Lite monoboard 
CPU.  Ethernet network facilities is supplied as a separate board.  Another 
four RS232 ports come with 


                                     -10-

<PAGE>


an independent 7316 model card (already existing in "TELMEX").  DCMS Lite has 
a total of 6 serial ports.

The DCMS Lite uses QNX version 4.2 or latest real-time operating system.  QNX 
is a multitasking operating system with support for multiple users, three 
levels of access security, and task prioritization.

The DCMS Lite comes equipped with 16 MB of RAM . The DRAM is the buffer 
memory for call record storage.

The main processor complex "backplane" which interconnects the 
microprocessors), the system monitor and high-speed peripherals is the STD 
bus.

A power converter module is provided with the main processor complex.  The 
power converter module is provided as a "Plug-in" module.

The power converter provides up to 180 watts of +5VDC, +12VDC AND -12VDC.

A DCMS Lite simplex configuration, as contemplated in this agreement after 
the upgrade shall have the following:

1 pc.  Processor unit 32 bits includes,
       Processor with 16MB RAM
       Power converter module
       Multi-slots chassis
       RS232 outgoing ports
       V.22 or V.32 modem
       Interface console SCSI interface for disk
       Monitoring system module
       Standard cable set
       Store/send Software
       Administration Software
       Application Software
       Maintenance diagnosis Software
       Automatic Alarm report Software
       Cable up to 15' for interrace to tape port or up to 100' par X.25 port.

1 pc.  QNX system version 4.2 or higher
1 pc.  X.25 (MTP), PDC or MTE interface switch
1 pc.  Ethernet TCP/IP interface


                                     -11-

<PAGE>


Optional equipment that can be included,
- -  Mirror disk
- -  30' cable with amplifying signals for MTE
- -  50' cable with amplifying signals for MET
- -  X.25/FTAM protocole
- -  X.25/MNP protocole


                                     -12-

<PAGE>

                                       
                  EXHIBIT 2. - DETAILED DESCRIPTION OF COSTS


(Exhibit 2 is confidential and has been omitted and filed separately with the 
Commission).


<PAGE>


                         EXHIBIT 3. APPROVAL COMMITTEE

To commonly timely and correctly perform the corresponding works during the 
"TELEPROCESS PROJECT" duration, a work committee from the areas involved in 
the project, whose mission is to take decisions, concentration, supervision 
and execution of the specific tasks to the successful accomplishment of the 
"TELEPROCESS PROJECT".

The approval committee is integrated by:

 - Ing. John Locus

 - Dr. Radl Rojas

 - Ing. Manuel Padilla

Responsibilities:

 - Responsible for the good direction, decisions and conclusion of the 
"TELEPROCESS PROJECT".

 - General administration of the 'TELEPROCESS PROJECT" and communication of 
"TELMEX" policies.

 - Progress reports of the "TELEPROCESS PROJECT", presented by "ACEC".

 - Take the necessary action regarding "TELMEX" internal and external area 
situations with "ACEC" during the "TELEPROCESS PROJECT".

 - Approve and validate the Hardware and Software quality supplied by "ACEC", 
as well as the engineering services.

 - Authorize the payment for Hardware and Software delivered by "ACEC", as 
well as the engineering services provided by "ACEC".

The aforementioned is not limited and may vary according to the circumstances.



<PAGE>

                            EXHIBIT 4.  WORK PROGRAM

<TABLE>
<CAPTION>

                                                                              DCMS  DCMS        DCMS 
                                                DCMS  DCMS        DCMS  DCMS  lite  lite  DCMS  lite 
Product cycle                         Parallel  X.25  X.25  DCMS  X.25  lite  X.25  X.25  spare spare
  Activity                            Activity  MNP   FTAM  MTE   MTP   MTE   MTP   FTAM  part  part 
<S>                                   <C>       <C>   <C>   <C>   <C>   <C>   <C>   <C>   <C>   <C>
"Site" engineering                                7     7     7     7     7     7     7
O.C. process                                     10    10    10    10    10    10    10     10    10
1st delivery eng.                                 0     0     0     0    80    90    90
Manufacture          Electric                    90    90    90    90    90    90    90     90    90
                     modification
Shipping and Customs                             15    15    15    15    15    15    15     15    15
Installation and start up                        30    30    30    30    30    30    30
Acceptance                                       10    10    10    10    10    10    10
Total Calendar                                  162   162   162   162   222   252   252    125   125
After first delivery                            162   162   162   162   162   162   162    125   125
Capacity Installation                            30    30    30    32    75    75    75
Minimum initial order                            10    10    18    32    75    75    75
</TABLE>


                                      -2-

<PAGE>


Note:  All purchase orders placed after the first initial for each type of 
item will be installed within the following thirty (30) days after the 
installation period of the first order and according to the installation 
capacity.  If the capacity is exceeded the remaining and not installed units 
will be installed in the immediate 30 day period subject to installation 
capacity limits.  30 day extensions will be added until all exceeding 
capacity is installed, without any penalty.

Application Software

<TABLE>
<CAPTION>

Activity       Software    ANMS    FTAM
<S>            <C>         <C>     <C>        <C>          <C>         <C>
Analysis          30        10      30
Design            45        10      45
Development       60        25      60
Tests             15        15      15
Acceptance        10        10      15
Total            160        70     165
Minimum initial  100         1     100
Order

                          Development          Seminary     Training 
Training              of training material    preparation    period     Total

DCMS Operation                 30                  5            5         40
DCMS Maintenance               30                  5            5         40
DCMS Lite Operations          120                  5            5        130
DCMS Lite Maintenance         120                  5            5        130
Software engineering           90                  5           15        110
New applications              120                  5           15        140
Design 
ANMS                           30                  5            5         40
SNMP                          120                  5           10        135
</TABLE>

Note:  The time shown on the tables are represented as calendar days.


<PAGE>


                             EXHIBIT 5.- TRAINING

The "ACEC" training courses will follow general outline according to 
INTTELMEX:

Duration:    16-40 hours (between 2 and 5 days)
Breaks:      Daily, 1 hour lunch
             Hourly, 10 minutes

Class size:  12 students
Instructor:  Qualified and experienced DCMS, DCMS Lite Software "ACEC" 
             Technician

Customer Provided:

- -  Classroom or acceptable work area
- -  DCMS and DCMS LITE System
- -  48 volt battery power
- -  Printing Terminal and PC
- -  1200/2400 modem
- -  Two telephone lines
- -  Direct cable for console port
- -  Digital Volt meter
- -  Small hand tool set

"ACEC" Provided:

- -  Appropriate Spanish course manual
- -  Snapshot document
- -  Diagrams
- -  Brochures
- -  Evaluation forms

Others to be provided by "ACEC" if approved by "TELMEX":

- -  Trouble shooting tree document
- -  Material return procedures
- -  Failure report procedures

"ACEC" is undertakes to provide the necessary training and skill to "TELMEX" 
personnel without additional cost, providing the necessary material and 
instruction in Spanish.


<PAGE>


Regarding personnel, courses, contents, programs, place for instruction, 
equipment and/or material for the students according to INTTELMEX (Instituto 
Tecnologico de Telefonos de Mexico.

"ACEC" shall provide two (2) courses in Spanish, in Mexico City, without 
charge, which shall include the following:

- -  DCMS operation
- -  DCMS installation and maintenance
- -  DCMS Lite Operation
- -  DCMS Lite Installation and maintenance
- -  ANMS operation

"ACEC" shall provide one (1) English course in the United States as follows:

- -  Software engineering applications
- -  New applications development
- -  SNMP agents development


With the "Software engineering applications" "ACEC" shall provide, without 
cost, the processor "C" and the bookmaker required for the development of 
software on DCMS and DCMS Lite platform.  In addition "ACEC" as part of the 
transference process applications during the warranty period, will 
participate with "TELMEX" in minor changes or extensions to this applications 
during the warranty period, validating the development and support during the 
tests, as part of the training.  "ACEC" and "TELMEX shall establish by mutual 
agreement the methodology for modifications as part of the transference 
process to be respected in order to preserve the warranty of the "software 
applications".

"TELMEX" personnel's travel and lodging expenses in the United States shall 
be on "TELMEX" account.

(Annexo B is confidential and has been omitted and filed separately with the 
Commission)


                                      -2-

<PAGE>


               EXHIBIT 6.- DELIVERY PROCEDURES FOR PAYMENT PURPOSES


ACCEPTANCE TESTING,

"TELMEX" and "ACEC" shall define the proceeding for the acceptance of the 
equipment including the tests to be performed during the start and test 
period, connection to the central and polling test.

DELIVERY  CYCLE

All payments mentioned below are 30 (thirty) days after presentation of the 
corresponding documents, duly validated; according to "TELMEX" procedures.

a) Delivery

For payment 40% of the equipment, and reimbursement of expenses, insurance, 
and import taxes, it shall be considered that the equipment be delivered at 
"TELEMEX's" office designated by "TELMEX", in Mexico City in the quantity and 
quality expected, to "TELMEX" satisfaction.

b) Start up and test acceptance

The equipment shall be considered tested and working in order to authorize 
the payment of 50% once it has been started and proved to be functioning 
according to the approval tests and proceedings to "TELMEX" satisfaction.

c) Switch connection acceptance

The system has been installed at the switch and all functions are working 
according to the specifications with the exception that the polling test 
cannot be performed through not fault of ACEC.  This will generate payment of 
5%.

d) Polling acceptance

The equipment shall be considered pole tested, for 5% final payment once the 
centralized detailed invoicing recollection, according to the approval and 
test proceedings, to "TELMEX" satisfaction.

"TELMEX" shall issue purchase orders in accordance with this agreement 
showing the place of installment of the equipment and the delivery dates 
based on the time table of the Work Program clause of this agreement.


<PAGE>


Upon each delivery stage "TELMEX" shall, within 10 days, notify "ACEC" the 
following:

I. Acceptance

The system or product complies with the acceptance criteria.

II. Accepted with exceptions

The system or product was accepted by "TELMEX" and complies with the criteria 
but there are some details to be corrected by "ACEC".  "TELMEX" shall include 
these in a problems to solve list, to achieve the total acceptance.  "ACEC" 
and "TELMEX" shall establish a program to solve these problems.  This 
commitment is subject to the Penalty clause of this agreement.  Acceptance 
with exceptions will be considered as valid for payment riot being a serious 
situation.

III.  Not Accepted

The system was not accepted according to the mutually agreed criteria due to 
one or more problems.  "TELMEX" shall include these in the list of problems 
to be solved for total acceptance.  "ACEC" and "TELMEX" will jointly 
establish a program to solve such problems.  This commitment is subject to 
the  Penalty clause of this agreement.  Payments do not proceed in this case 
due to the serious situation.


                                      -2-



<PAGE>

                   EXHIBIT 7. - DCMS LITE UPGRADE CONDITIONS


DCMS Lite "upgrade" the following conditions shall apply:

1.  "TELMEX" shall provide all units to upgraded, in a satisfactory operating 
condition, including the below mentioned parts:

1 pc 7872 CPU processor 386, 2MB RAM, 25 or 33 Mhz
1 pc 7325 V.22 or 7326 V.32 modem
1 pc 7316 serial card with 4 RS232 ports
1 pc 7909A termination bus card
1 pc BX15R-01 rack
1 pc 48VDC power supply (internal or external)
1 pc Break out panel with 2 RS232 ports and keyboard interface
1 pc 3.5" floppy disk unit
pc On/Off switch (in-rack with power supply or external)
1pc 19" box made of extruded aluminum, self-clinching screws,
6 pc. RS232, Ethernet and power connectors, fan and mounting rails
1 pc QNX operating system version 2.1 or 2.15

II.   In case they are not operational, or they do not exist, "ACEC" can sell 
them at the prices listed in the price catalogue, or "TELMEX" can supply them 
at the site, at "TELMEX" choice.

III.  The operational status of this equipment must be indicated in the 
"site" survey to be presented to "TELMEX", and can be verified by SML polling 
software and ratified by "ACEC" during "site" engineering.

IV.   "ACEC" will use any or all of the existing parts in PC's ProLog as 
"upgrade," platform.

V.    "ACEC" has the obligation to inform "TELMEX" about the parts not used 
in the upgrade and store them in he place designated by "TELMEX".

Parts that definitely will be used:

1 pc 7325 V.22 or 7326 V.32 modem
1 pc 7316 serial card with 4 RS232 ports
1 pc 7909A termination bus card
1 pc BX15R-01 rack
1 pc 48VDC power supply (internal or external)
1 pc Break out panel with 2 RS232 ports and keyboard interface
1 pc 3.5" floppy disk unit
1 pc On/off switch (in-rack with power supply or external)
1 pc 19" box made of extruded aluminum, self-clinching screws,

                                      

<PAGE>

6 pc. RS232 Ethernet and power connectors, fan and mounting rails
1 pc QNX operating system version 2.1 or 2.15

Parts with less possibility to be reused:

1 pc. 7872 CPU with 386 processor, 2MB RAM, 25 or 33 Mhz may be used as
additional communications buffer, if approved by TELMEX.

VI.   "ACEC" can reuse partially or totally the existing platform with the 
obligation to supply a DCMS Lite functioning in accordance with the 
aforementioned specifications.

VII.  All reused parts shall be included in the two year warranty so that the 
whole system shall have the same warranty period.

Annexo B is confidential and has been omitted and filed separately with the 
Commission)

                                      -2-

<PAGE>

                               EXHIBIT B - ALARMS

"TELMEX" and "ACEC" shall establish the central by central priority for alarm 
attendance according to the following criteria;

<TABLE>
<CAPTION>

    TYPE OF CENTRAL                    ALARM          ALARM          ALARM
                                       CLASS I        CLASS II       CLASS III
    ---------------                    -------        --------       ---------
    <S>                                <C>            <C>            <C>
    Central Priority A                  8 hrs.        16 hrs.        24 hrs.
    Central Priority B                 24 hrs.        36 hrs.        48 hrs.

    Alarm                              Alarm          Alarm          Alarm
                                       Class I        Class II       Class III

    Alarm of homework or process         x
    of the software system

    Process alarm of the software        x
    of application

    Alarm of homework of                                x
    the software application

    DCMS no respond                      x*

    "Time-out" of the interface          x

     Fault in the network                               x

     Bad facts                           x

     Serial port no respond                             x

     75% Full disc                                      x

     (85%) Full disc                                    x

     Error in the write of the disc      x

     Error in the read of the disc       x

     Disc on full mirror at                                            x

                                      -3-

<PAGE>

    75%

    Disc on full mirror at (85%)                        x

    Error in the write of the                           x
    mirror disc

    Error in the read of the                            x
    mirror disc
</TABLE>

*"DCMS no response" may become an Alarm Class II or Alarm Class III once the 
DCMS is accessed via the dial-in modem and the reason for no response is 
defined.

DCMS Lite supports both hardware and software alarms, grouped into I 
(critical), Class II (major), Class II (minor) categories.  The actual number 
of alarms can range into the hundreds, so it is impractical to list them all, 
but in general they can be grouped as follows:

Task control alarms

                                      -4-

<PAGE>

                     EXHIBIT 9.- TERMINOLOGY

TURN KEY

"ACEC's" commitment to deliver, install and totally functioning to "TELMEX" 
satisfaction the Software and Hardware subject of this AGREEMENT.

DCMS

Initials for "Distributed Call Measurement System".

DCMS LITE

"Distributed Call Measurement System Lite".

SOFTWARE APPLICATION

The specific programs property of "TELMEX" required for detailed data 
processing of calls.

SOFTWARE BASE

Tools, subroutines and applications, property of "ACEC" and existing before 
this agreement, required for the Software Application development.

ANMS

"AMAT Network Management System".  Network administration Software to detect 
alarms, monitor and administer DCMS and DCMS Lite.

SYSTEM SOFTWARE

The store and forward software, administration software, maintenance 
diagnostics software, automatic alarm reporting software required, are 
property of "ACEC".

SOFTWARE

Application software

HARDWARE

Processor, circuits, disks.  General electronic components to be installed in 
each Central.

                                      

<PAGE>

CENTRAL

TELMEX Switchboard or network station.

TLC

NAFTA

ENGINEERING "SITE"

ACEC's engineering service rendered to determine the system, equipment, 
interface and place conditions for the installation of the DCMS and DCMS Lite 
system.  Architecture for the installation also referred to as "Site Survey".

"SITE"

Installation site.  Usually a TELMEX central or office.

UPGRADE

Actualization of the existing system.  Actualization of an industrial PC to a 
DCMS Lite.

SOT

Software of a processor.  Made by third party and installed with DCMS and 
DCMS Lite license.

SERVICE ORDER

SOT's specifying the service to be provided at the central and permits access 
to the same.

SBE TCP/IP

A third party software with license.

ONX

A third party software with license.

AEG MODCOM UNIX

A third party software with license.

MOTOROLA M68

A third party software with license.

                                      -2-

<PAGE>

MARBEN FTAM

A third party software with license.

X.25

OSI 3 level model. Communications protocol.

REGISTRATION FORMAT

Registration data structure

FTP

"File Transfer Protocol"

PROTOCOL

Communication mechanism for assuring the good reception and forwarding of 
signals or data between two systems.

TAPE PORT

Interface communication central where tape units are installed.

AMA NETWORK

Specification for a billing network.

UPS 32

ACEC polling software

SNMP

SIMPLE NETWORK MANAGEMENT PROTOCOL.

Beta Test Site

Installation site for a preliminary version of a product to evaluate its 
performance.

BAF

"Bellcore AMA Format".

                                      -3-

<PAGE>

TCP/IP

Communications protocol.

FTAM

Communications protocol.

MNP

Communications protocol.

MTP

Communications protocol.

RS232

Standard ports serial.

Chassis

Stand-alone cabinet

AXE

Central type

S12

Central type

5ESS

Central type

DMS200

Central type

SWITCH

Usually define a telephone central

                                      -4-

<PAGE>

MTE

Magnetic Tape Emulator.

PDC

Passive Data Collector.  Interface electronic card for tape unit.

MONOBOARD

A single card electronic processor.

VME

Standard processing architecture

STD

Standard processing architecture

SCSI

"Small Computer System Interface"

UNIX

Operating system type

ETHERNET

Network type

BACKPLANE



PLUG- IN



V.22

Type of Modem

                                      -5-

<PAGE>

V.32

Type of Modem

MB

Mega Bytes

PRO-LOG

Industrial computer manufacturer

INDUSTRIAL PC

Industrial Personal Computer

KIT

Parts kit

DAT

Magnetic tape unit

"C"

software language

SML

Local Service Measured

                                      -6-

<PAGE>
EXHIBIT 11.1
 
                              ACE*COMM CORPORATION
                  COMPUTATION OF PRO FORMA EARNINGS PER SHARE
              UNDER TREASURY STOCK METHOD SET FORTH IN APB NO. 15
 
<TABLE>
<CAPTION>
                                                                                  YEAR ENDED    NINE MONTHS ENDED
                                                                                JUNE 30, 1995     MARCH 31, 1996
                                                                                --------------  ------------------
<S>                                                                             <C>             <C>
SHARES (1)
Average outstanding during the year...........................................       3,939,505        3,944,248
Add: Incremental shares under stock compensation and stock purchase plans
 (2)..........................................................................         417,543          722,143
Add: Incremental shares due to automatic conversion of mandatorily redeemable
 Series C preferred stock (3).................................................       1,843,944        1,843,944
                                                                                --------------       ----------
Number of shares on which published earnings per share
 is based.....................................................................       6,200,992        6,510,335
                                                                                --------------       ----------
                                                                                --------------       ----------
EARNINGS
Net (loss) income applicable to common stockholders...........................  $   (1,592,646)    $    778,658
                                                                                --------------       ----------
                                                                                --------------       ----------
Pro forma (loss) income per share (4).........................................     $(0.26)            $0.12
                                                                                --------------        ----------
                                                                                --------------        ----------
</TABLE>
 
- ------------------------
(1)  All  share amounts  give  effect to  the proposed  5.42  for 1  stock split
    effected in the form of a stock dividend.
 
(2) Incremental shares include the exercise of options under the treasury  stock
    method when dilutive in a particular period. In addition, incremental shares
    include stock exercised and options granted in the year preceding the filing
    using  the offer price for all years presented (dilutive or antidilutive) in
    accordance with SAB 83.
 
(3) To give  pro forma effect  to the conversion  of the mandatorily  redeemable
    Series  C  Preferred Stock  which will  automatically  convert to  shares of
    Common Stock upon the initial public offering.
 
(4) There is no difference between primary and fully-diluted earnings per share.
    Therefore, only one EPS figure is presented in accordance with APB 15.

<PAGE>


                                                                 EXHIBIT 23.1


                      CONSENT OF INDEPENDENT ACCOUNTANTS


We hereby consent to the use in the Prospectus constituting part of this 
Registration Statement on Form S-1 of our report dated December 8, 1996, 
except as to the extension of their credit facilities as described in Note 5 
which is as of January 25, 1996, and except as to the stock split described 
in Note 11 which is as of June 23, 1996, relating to the financial statements 
of ACE*COMM Corporation, which appears in such Prospectus. We also consent to 
the references to us under the headings "Experts" and "Selected Financial 
Data" in such Prospectus. However, it should be noted that Price Waterhouse 
LLP has not prepared or certified such "Selected Financial Data."



PRICE WATERHOUSE LLP

Washington, D.C.
June 24, 1996


<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   YEAR                   9-MOS
<FISCAL-YEAR-END>                          JUN-30-1995             JUN-30-1996
<PERIOD-START>                             JUL-01-1994             JUL-01-1995
<PERIOD-END>                               JUN-30-1995             MAR-31-1996
<CASH>                                         189,903                   2,407
<SECURITIES>                                         0                       0
<RECEIVABLES>                                4,712,740               4,926,683
<ALLOWANCES>                                    10,000                  10,000
<INVENTORY>                                    964,501               1,360,289
<CURRENT-ASSETS>                             5,987,536               6,527,547
<PP&E>                                       1,893,417               2,047,454
<DEPRECIATION>                                 724,769               1,124,403
<TOTAL-ASSETS>                               8,293,337               8,861,196
<CURRENT-LIABILITIES>                        7,361,712               3,939,334
<BONDS>                                              0                       0
                        2,121,733               2,226,654
                                      1,000                   1,000
<COMMON>                                       39,713                   42,310
<OTHER-SE>                                 (1,282,904)               (576,542)
<TOTAL-LIABILITY-AND-EQUITY>                 8,293,337               8,861,196
<SALES>                                     12,415,331              13,111,225
<TOTAL-REVENUES>                            12,415,331              13,111,225
<CGS>                                        6,579,504               6,671,913
<TOTAL-COSTS>                               13,673,172              12,046,962
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                             334,805                 285,605
<INCOME-PRETAX>                            (1,592,646)                 778,658
<INCOME-TAX>                                         0                       0
<INCOME-CONTINUING>                        (1,592,646)                 778,658
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                               (1,592,646)                 778,658
<EPS-PRIMARY>                                        0                       0
<EPS-DILUTED>                                        0                       0
        

</TABLE>


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