APPLIED DIGITAL ACCESS INC
10-Q, 1999-05-17
INSTRUMENTS FOR MEAS & TESTING OF ELECTRICITY & ELEC SIGNALS
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<PAGE>


                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                           --------------------------

                                    FORM 10-Q
[X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE 
    ACT OF 1934

                  FOR THE QUARTERLY PERIOD ENDED MARCH 31, 1999

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE
     ACT OF 1934

                        COMMISSION FILE NUMBER 000-23698

                          APPLIED DIGITAL ACCESS, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

                DELAWARE                                68-0132939
     (STATE OR OTHER JURISDICTION OF          (IRS EMPLOYER IDENTIFICATION NO.)
      INCORPORATION OR ORGANIZATION)

                 9855 SCRANTON ROAD, SAN DIEGO, CALIFORNIA 92121
               (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES, ZIP CODE)

                                 (619) 623-2200
              (REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE)

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

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

There were 13,028,849 shares of the Registrant's Common Stock, $0.001 par value,
outstanding as of April 30, 1999.



<PAGE>


                          APPLIED DIGITAL ACCESS, INC.


                               INDEX TO FORM 10-Q

<TABLE>
<CAPTION>

                                                                                                            PAGE
<S>                                                                                                         <C>
PART I.      FINANCIAL INFORMATION


Item 1.      Financial Statements


             Condensed Consolidated Balance Sheets at
             March 31, 1999 and December 31, 1998..............................................................3

             Condensed Consolidated Statement of Operations for the
             three months ended March 31, 1999 and March 31, 1998..............................................4


             Condensed Consolidated Statement of Cash Flows for the three
             months ended March 31, 1999 and March 31, 1998....................................................5


             Notes to Condensed Consolidated Financial Statements..............................................6 - 9


Item 2.      Management's Discussion and Analysis of Financial Condition
             and Results of Operations.........................................................................10-14


             Risks and Uncertainties...........................................................................14-21


Item 3.      Quantitative and Qualitative Disclosures About Market Risk........................................21


PART II.     OTHER INFORMATION


Item 1.      Legal Proceedings.................................................................................22


Item 2.      Changes in Securities and Use of Proceeds.........................................................22


Item 3.      Defaults Upon Senior Securities...................................................................22


Item 4.      Submission of Matters to a Vote of Security Holders...............................................22


Item 5.      Other Information.................................................................................22


Item 6.      Exhibits and Reports on Form 8-K..................................................................22


SIGNATURES.....................................................................................................23


</TABLE>

                                        2

<PAGE>

PART I - FINANCIAL INFORMATION

Item 1. Financial Statements
        --------------------

APPLIED DIGITAL ACCESS, INC.

Condensed Consolidated Balance Sheets
- -------------------------------------------------------------------------------

<TABLE>
<CAPTION>

                                                                  MARCH 31,     DECEMBER 31,
                                                                   1999           1998
                                                                   ----           ----
                                                                 Unaudited
                                                                  (Dollars in Thousands,
                                                                  except per share data)
<S>                                                                <C>            <C> 
ASSETS
Current assets:
    Cash and cash equivalents                                     $ 14,733   $ 12,513
    Trade accounts receivable, net                                   5,512      6,111
    Inventory, net                                                   4,645      5,679
    Deferred income taxes                                              130        130
    Prepaid expenses and other current assets                        1,893      1,700
                                                                   -------    -------

        Total current assets                                        26,913     26,133

Property and equipment, net                                          3,997      5,466
Intangible assets, net                                                 964      1,247
Deferred income taxes                                                1,510      1,426
                                                                   -------    -------

        Total assets                                              $ 33,384   $ 34,272
                                                                   -------    -------
                                                                   -------    -------

LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
    Accounts payable                                              $  2,819   $  2,922
    Accrued expenses                                                 2,346      2,374
    Accrued warranty expense                                         1,189      1,264
    Deferred revenue                                                 4,337      2,817
                                                                   -------    -------

        Total current liabilities                                   10,691      9,377
                                                                   -------    -------
Shareholders' equity:
    Preferred stock, no par value; 7,500,000 shares authorized;
      no shares issued                                                  --         --
    Common stock, $.001 par value; 30,000,000 shares authorized;
      13,026,842 and 12,909,315 shares issued and outstanding at
      March 31, 1999 and December 31, 1998, respectively                13         13
    Additional paid-in capital                                      55,060     54,897
    Accumulated other comprehensive income                             124        163
    Accumulated deficit                                            (32,504)   (30,178)
                                                                   -------    -------

        Total shareholders' equity                                  22,693     24,895
                                                                   -------    -------

        Total liabilities and shareholders' equity                $ 33,384   $ 34,272
                                                                   -------    -------
                                                                   -------    -------


</TABLE>


                   The accompanying notes are an integral part
                         of these financial statements.

                                       3
<PAGE>




APPLIED DIGITAL ACCESS, INC.

Condensed Consolidated Statements of Operations and Comprehensive Loss
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>


                                               FOR THE THREE MONTHS ENDED MARCH 31,
                                                      1999             1998
                                                   ----------      ----------
                                                     (Dollars in thousands,
                                                      except per share data)
                                                           (Unaudited)
                                                   
<S>                                                 <C>              <C>     
Revenue                                             $ 7,202          $  5,272
Cost of revenue                                       2,894             3,664
                                                 ----------        ----------

    Gross profit                                      4,308             1,608
                                                 ----------        ----------

Operating expenses:                                
    Research and development                          3,185             3,544
    Restructuring charge                              1,335                --
    Engineering reimbursement                        (1,361)               --
    Sales and marketing                               2,279             2,280
    General and administrative                        1,261             1,119
                                                 ----------        ----------

        Total operating expenses                      6,699             6,943
                                                 ----------        ----------

        Operating loss                               (2,391)           (5,335)

Interest income                                         120               175
Other expense, net                                       (1)              (11)
                                                 ----------        ----------

        Loss before income taxes                     (2,272)           (5,171)
Provision for income taxes                               54                37
                                                 ----------        ----------
                                                   
        Net loss                                 $   (2,326)       $   (5,208)
                                                 ----------        ----------
                                                 ----------        ----------
                                                   
Comprehensive loss                                $  (2,365)      $    (5,127)
                                                 ----------        ----------
                                                 ----------        ----------
                                                   
        Net loss per share, basic and diluted     $      (.18)    $      (.41)
                                                 ----------        ----------
                                                 ----------        ----------

        Shares used in per share computations    12,916,606        12,624,462
                                                   ----------      ----------
                                                   ----------      ----------
                                               

</TABLE>

                   The accompanying notes are an integral part
                         of these financial statements.



                                       4
<PAGE>


APPLIED DIGITAL ACCESS, INC.

Condensed Consolidated Statements of Cash Flows
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>


                                                                      FOR THE THREE MONTHS ENDED MARCH 31,
                                                                              1999             1998
                                                                           --------           --------
                                                                              Dollars in Thousands
                                                                                   (Unaudited)

<S>                                                                        <C>                <C>      
CASH FLOWS FROM OPERATING ACTIVITIES:
    Net loss                                                               $ (2,326)          $ (5,208)
    Adjustments to reconcile net loss to net cash provided (used)
      by operating activities:
        Depreciation and amortization                                           953                918
        Writeoff of assets associated with restructuring                        866                 --
        Other                                                                   (40)                17
        Changes in operating assets and liabilities:
           Trade accounts receivable                                            599              3,849
           Inventory                                                          1,034                514
           Prepaid expenses and other current assets                           (277)               164
           Accounts payable                                                    (103)               856
           Accrued expenses                                                     (12)            (1,584)
           Accrued warranty expense                                             (75)                (5)
           Deferred revenue                                                   1,520                224
                                                                           --------           --------
             Net cash provided (used) by operating activities                 2,139               (255)
                                                                           --------           --------
CASH FLOWS FROM INVESTING ACTIVITIES:
    Purchases of investments                                                     --             (3,413)
    Maturities of investments                                                    --              2,935
    Purchases of property and equipment                                         (67)              (684)
                                                                           --------           --------

             Net cash used by investing activities                              (67)            (1,162)
                                                                           --------           --------

CASH FLOWS FROM FINANCING ACTIVITIES:
    Principal payments on capital lease obligations                             (16)                (4)
    Proceeds from issuance of common stock                                      164                312
                                                                           --------           --------


             Net cash provided by financing activities                          148                308
                                                                           --------           --------


             Net increase (decrease) in cash and cash equivalents             2,220             (1,109)

        Cash and cash equivalents at beginning of period                     12,513              4,400
                                                                           --------           --------

        Cash and cash equivalents at end of period                         $ 14,733           $  3,291
                                                                           --------           --------
                                                                           --------           --------

</TABLE>


                   The accompanying notes are an integral part
                         of these financial statements.


                                       5
<PAGE>

APPLIED DIGITAL ACCESS, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
FOR THE THREE MONTHS ENDED MARCH 31, 1999 AND 1998
(DOLLARS IN THOUSANDS) 


1.     BASIS OF PRESENTATION


The accompanying unaudited condensed consolidated financial statements include
the accounts of Applied Digital Access, Inc. (the "Company" or "ADA") and its
wholly owned subsidiary: Applied Digital Access - Canada, Inc. All significant
intercompany balances and transactions have been eliminated in consolidation.
These financial statements have been prepared in accordance with the interim
reporting requirements of Form 10-Q, pursuant to the rules and regulations of
the Securities and Exchange Commission ("SEC"). Accordingly, they do not include
all of the information and footnotes required by generally accepted accounting
principles for complete financial statements.


In the opinion of management, all adjustments (consisting of only normal
recurring adjustments) considered necessary for a fair presentation have been
included. Operating results for the three month period ended March 31, 1999 are
not necessarily indicative of the results that may be expected for the year
ending December 31, 1999. These financial statements should be read in
conjunction with the Company's audited financial statements and notes thereto,
together with Management's Discussion and Analysis of Financial Condition and
Results of Operations, and Risks and Uncertainties, contained in the Company's
Annual Report on Form 10-K for the fiscal year ended December 31, 1998 filed
with the SEC.

2.     NEW ACCOUNTING PRONOUCEMENTS


In June 1998, the Financial Accounting Standards Board ("FASB") issued SFAS No.
133, Accounting for Derivative Instruments and Hedging Activities. SFAS No. 133
establishes accounting and reporting standards for derivative and hedging
activities. In accordance with SFAS No. 133 all derivatives must be recognized
as assets or liabilities and measured at fair value. This Statement will be
effective for the Company's fiscal year 2000. The Company has not yet determined
the impact of the adoption of this new accounting pronouncement on its
consolidated financial position or results of operations.

3.     INVENTORY


Inventory is valued at the lower of cost (determined using the first-in,
first-out method) or market. Inventory was as follows:

<TABLE>
<CAPTION>


                                                                               MARCH 31       DECEMBER 31
                                                                                 1999            1998
                                                                              -----------    ------------
             <S>                                                               <C>            <C>   
             Inventories:                                                                     
                  Raw materials                                                 $3,026         $3,266
                  Work-in-process                                                1,646          2,389
                  Finished goods                                                   673            698
                                                                              -----------    ------------

                                                                                 5,345          6,353
                  Less reserves                                                   (700)          (674)
                                                                              -----------    ------------

                                                                                $4,645         $5,679
                                                                              -----------    ------------
                                                                              -----------    ------------

</TABLE>


4.       RESTRUCTURING CHARGE FOR TERMINATION OF JOINT DEVELOPMENT AGREEMENT


On March 3, 1999, the Company announced the termination of its joint 
development agreement ("JDA") with Northern Telecom, Inc. ("Nortel"). The 
Company and Nortel entered into the JDA in September 1997 to develop 
Synchronous Optical Network ("SONET") network element products for the 
telecommunications industry. The intellectual property rights associated with 
the jointly developed technology will become the property of the Company. 
Under the JDA, the Company and Nortel each contributed technology and 
development resources to the project and shared the development costs. The 
Company's development costs 

                                       6
<PAGE>

associated with the JDA have been expensed as incurred. Nortel
is obligated to continue funding its share of the development costs associated
with the JDA project through June 2, 1999.


For the three months ended March 31, 1999, the Company incurred a one-time 
restructuring charge of $1,435, of which $1,335 is included as a separate 
component of operating expenses and $100 is included in costs of revenue. 
Cash expenditures are estimated to be $469 which consists of employee 
severance costs, facility closure in Richardson, Texas and other costs. The 
significant components of the restructuring charge are:

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

<TABLE>
<CAPTION>

                COMPONENT
                ---------
                                                                                                                   Estimated
                                                                                  Amounts incurred as of     amounts to be paid in
                                                                Amount                March 31, 1999              the Future
                                                                ------                --------------              ----------

<S>                                                            <C>                       <C>                         <C> 
Severance and related personnel costs                          $  264                    $  264                      $  0

Capital asset writeoffs                                           866                       866                         0

Facility closure                                                  152                        45                       107

Excess inventory writedown                                        100                       100                         0

Other costs                                                        53                         0                        53
                                                               ------                    ------                      ----
Total restructuring costs                                      $1,435                    $1,275                      $160

</TABLE>

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


Severance costs are related to the termination of approximately 65 people, 
the majority of which were engineers focused on the JDA. The capital assets 
are primarily software development tool kits that were acquired specifically 
for the JDA and do not have an on-going business use. The facility in 
Richardson, Texas is a leased facility which the Company has the ability to 
sub-lease. The Company has estimated the costs associated with leasing the 
facility until a sub-lessee can be found. The inventory write down related to 
excess quantities of components used in the JDA product design that were 
purchased in advance. Other costs are associated with legal and other 
professional services required to complete the termination of the JDA. The 
Company anticipates the majority of the expenditures will be concluded by 
June 30, 1999. However, there may be costs associated with the closure of the 
leased facility in Richardson, Texas that could extend beyond that date.

5.     PER SHARE INFORMATION

Basic EPS is computed by dividing income available to common stockholders by the
weighted average number of common shares outstanding for the period. Diluted EPS
is computed giving effect to all dilutive potential common shares that were
outstanding during the period. Dilutive potential common shares consist of the
incremental common shares issuable upon the exercise of stock options and
warrants for all periods. All prior period earnings per share amounts have been
restated to comply with SFAS No. 128.


In accordance with the disclosure requirements of SFAS No. 128, a reconciliation
of the numerator and denominator of basic and diluted EPS is provided as follows
(dollars in thousands, except per share amounts).



                                       7
<PAGE>

APPLIED DIGITAL ACCESS, INC.
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
FOR THE THREE MONTHS ENDED MARCH 31, 1999 AND 1998
(DOLLARS IN THOUSANDS) 


<TABLE>
<CAPTION>


                                                                            THREE MONTHS ENDED MARCH 31,
                                                                           1999                    1998
                                                                           ----                    ----
             <S>                                                           <C>                     <C>     

               Numerator - basic and diluted EPS:
                  Net loss                                               $(2,326)                $(5,208)
               Denominator - basis and diluted EPS:
                  Weighted average common stock outstanding               12,917                  12,624
               Basic and diluted earnings per share                       $(0.18)                 $(0.41)

</TABLE>


6.    SEGMENTS

In accordance with SFAS No. 131, information regarding the Company's business
segments is reported for financial statement purposes consistently with the
manner in which these segments are evaluated for internal reporting and
management's assessment of performance. The Company evaluates the performance of
its segment and allocates resources to them based on segment earnings before
allocation of corporate costs.

The Company's two business units, Network Systems and Network Management, are 
organized around the Company's product lines. The Network Systems business 
unit is formed around the Company's network test and performance monitoring 
products and services, including its T3AS Test and Performance Monitoring 
System ("T3AS"), Centralized Test System ("CTS"), Test OS, Remote Module, 
Network Embedded Protocol Access System ("NEPA"), and Sectionalizer. The 
Network Management business unit focuses on the Company's Operations Systems 
("OS") software products including .Provisioner, Traffic Data Collection and 
Engineering System ("TDC&E"), Fault Management System ("FMS"), and OS design 
services.

The table below presents information about revenues and operating loss for
reportable segments for the three months ended March 31:

<TABLE>
<CAPTION>

                                                               OPERATING
                                          REVENUES               LOSS
                                       ----------------     ---------------
<S>                                             <C>             <C>     
1998:
     Network Systems                            $3,117          $(2,953)
     Network Management                          2,155             (595)
                                                ------          -------

         Total for reportable segments           5,272           (3,548)

     Reconciling items                              --           (1,787)
                                                ------          -------

     Consolidated totals                        $5,272          $(5,335)
                                                ------          -------
                                                ------          -------

1999:
     Network Systems                            $4,795          $  (272)
     Network Management                          2,407             (127)
                                                ------          -------

         Total for reportable segments           7,202             (399)

     Reconciling items                              --           (1,992)
                                                ------          -------

     Consolidated totals                        $7,202          $(2,391)
                                                ------          -------
                                                ------          -------

</TABLE>



                                       8
<PAGE>


The table below presents the reconciliation of operating loss for reportable
segments to consolidated loss before income taxes for the three months ended
March 31:

<TABLE>
<CAPTION>

                                            1999               1998
                                           -------           -------
<S>                                        <C>               <C>     
Operating loss for reportable
     Segments                              $  (399)          $(3,548)
Other unallocated segment expenses          (1,993)           (1,798)
Other unallocated income                       120               175
                                           -------           -------

         Consolidated loss before
              income taxes                 $(2,272)          $(5,171)
                                           -------           -------
                                           -------           -------

</TABLE>


Operating loss for reportable segments includes segment revenues with 
deductions made for related development and selling costs and certain 
expenses controllable by segment managers. Other unallocated segment expenses 
consist of corporate selling, general and administrative expenses allocated 
to each segment based on segment revenues. Other unallocated income consists 
of interest income on investments held at the corporate level.

The table below presents the reconciliation of total assets for reportable
segments to consolidated total assets at:

<TABLE>
<CAPTION>
                                        MARCH 31,       DECEMBER 31,
                                          1999             1998
                                         -------          -------
<S>                                      <C>              <C>    
Total assets for reportable
     Segments                            $14,155          $17,256
Other unallocated segment assets           2,918            2,925
Other unallocated assets:
     Cash                                 14,733           12,513
     Other                                 1,578            1,578
                                         -------          -------

      Consolidated total assets          $33,384          $34,272
                                         -------          -------
                                         -------          -------

</TABLE>


Total assets for reportable segments includes amounts attributable to trade 
accounts receivable, inventory and property and equipment. Other unallocated 
segment assets consist primarily of intangible assets obtained in conjunction 
with certain acquisitions. Other unallocated assets consists principally of 
deferred taxes and prepaid expenses

                                       9
<PAGE>


ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
         RESULTS OF OPERATIONS


THE STATEMENTS CONTAINED IN THIS FORM 10-Q THAT ARE NOT PURELY HISTORICAL ARE
FORWARD LOOKING STATEMENTS. STATEMENTS WHICH USE THE WORDS "OBJECTIVE," "SEEK,"
"INTEND," "WILL," "ANTICIPATE," "CAN," "CONTINUE," AND "EXPECT," ARE FORWARD
LOOKING STATEMENTS. THESE FORWARD LOOKING STATEMENTS, INCLUDING STATEMENTS
REGARDING THE COMPANY'S (I) PLANS FOR DEVELOPMENT OR ACQUISITION OF NEW PRODUCTS
OR ENHANCEMENT OF EXISTING PRODUCTS, (II) STRATEGY, (III) EXPANDED MARKETING
EFFORTS, (IV) EXPECTED LEVELS OF EXPENDITURES, (V) GOAL OF MAXIMIZING THE VALUE
OF TECHNOLOGY AND (VI) THE COMPANY'S TIMING OF YEAR 2000 COMPLIANCE, ARE BASED
ON INFORMATION AVAILABLE TO THE COMPANY ON THE DATE HEREOF, AND THE COMPANY
ASSUMES NO OBLIGATION TO UPDATE ANY SUCH FORWARD-LOOKING STATEMENT. IT IS
IMPORTANT TO NOTE THAT THE COMPANY'S ACTUAL RESULTS COULD DIFFER MATERIALLY FROM
THOSE IN SUCH FORWARD LOOKING STATEMENTS. AMONG THE FACTORS THAT COULD CAUSE
ACTUAL RESULTS TO DIFFER MATERIALLY ARE THE FACTORS SET FORTH BELOW UNDER THE
HEADING "RISKS AND UNCERTAINTIES."


RECENT DEVELOPMENTS


         On March 3, 1999, the Company announced the termination of its joint
development agreement ("JDA") with Nortel. The Company and Nortel entered into
the JDA in September 1997 to develop SONET network element products for the
telecommunications industry. The intellectual property rights associated with
the jointly developed technology will become the property of the Company. Under
the JDA, the Company and Nortel each contributed technology and development
resources to the project and shared the development costs. The Company's
development costs associated with the JDA have been expensed as incurred. Nortel
is obligated to continue funding its share of the development costs associated
with the JDA project through June 2, 1999. The Company expects to substantially
reduce expenses associated with the development conducted under the JDA and will
explore alternatives for maximizing the value of the jointly developed
technology. There can be no assurance that the Company will be successful in it
efforts to maximize the value of the technology developed under the JDA or that
the jointly developed technology will provide future value to the Company. 

         On March 31, 1999, the Company announced a reduction in its 
workforce of approximately 65 people, or 22% of its total workforce. Of the 
reduction in workforce, 23 were temporary positions. The Company determined 
the reduction was necessary in order to align its current operations with the 
Company's objectives of focusing on market opportunities in its core 
business, reducing expenses including expenses related to its recently 
terminated JDA with Nortel and improving operating results. The majority of 
the reduction in workforce were engineers focused on development conducted 
under the JDA. As a result of the reduction in workforce, the Company will 
close its office in Richardson, Texas. In the quarter ended March 31, 1999 
the Company incurred a restructuring charge of $1,435,000 related to the 
reduction in workforce, the closure of its Texas facility, the write-down of 
certain capital assets, and inventory.

RESULTS OF OPERATIONS


          Revenue totaled $7,202,000 for the three months ended March 31, 
1999, a 37% increase from $5,272,000 for the three months ended March 31, 
1998. The increase is primarily the result of increased revenue from the sale 
of network systems products and to a lesser extent increased revenue from the 
sale of network management OS products. Revenue generated from the sale of 
the Company's network systems products and services totaled $4,795,000 for 
the three months ended March 31,1999, a 54% increase from $3,117,000 for the 
three months ended March 31, 1998. The increase was primarily the result of 
increased sales of the Company's T3AS and CTS products. Revenue generated 
from the sale of the Company's network management OS  products and services 
totaled $2,407,000 for the three months ended March 31, 1999, a 12% increase 
from $2,155,000 for the three months ended March 31, 1998. The increase was 
the result of increased

                                       10
<PAGE>


sales of the Company's .Provisioner and TDC&E products partially offset by
decreased sales of the Company's design services and TestOS software products.
For the three months ended March 31, 1999, BellSouth, Bell Atlantic and
Ameritech accounted for 30%, 14%, and 11% of the Company's total revenue,
respectively. For the three months ended March 31, 1998, BellSouth and MCI
WorldCom accounted for 34% and 29% of the Company's total revenue, respectively.


         Gross profit totaled $4,308,000 for the three months ended March 31, 
1999, a 168% increase from $1,608,000 for the three months ended March 31, 
1998. Gross profit as a percent of revenue was 60% for the three months ended 
March 31, 1999 compared to 31% for the same period in 1998. The increase in 
gross profit levels was primarily the result of a network systems product mix 
weighted toward T3AS products, which carry higher gross margins than the CTS 
and Remote Module products and improved gross profit margins on the Remote 
Module product resulting from manufacturing cost reductions. Additionally, 
the allocation of the Company's relatively fixed manufacturing overhead costs 
over higher revenue levels and lower-inventory write-downs resulted in higher 
overall gross profit levels in the first quarter of 1999. There can be no 
assurance that the Company will be able to maintain the current gross profit 
margins or gross profit as a percent of revenue levels. Factors which may 
materially and adversely affect the Company's gross profit in the future 
include its level of revenue, competitive pricing pressures in the 
telecommunication network management market, new product introductions by the 
Company or its competitors, potential inventory obsolescence and scrap, 
possible recalls, production or quality problems, timing of development 
expenditures, changes in material costs, disruptions in sources of supply, 
regulatory changes, seasonal patterns of bookings, capital spending, and 
changes in general economic conditions.


         Research and development expenses totaled $3,185,000 for the three 
months ended March 31, 1999, a 10% decrease from $3,544,000 for the three 
months ended March 31, 1998. The decrease is due to an increase in Nortel's 
proportionate share of total development costs it is responsible for under 
the JDA. During the first quarter of 1999, Nortel agreed to increase its 
share of the costs incurred under the JDA from 50% to 60%. For the three 
months ended March 31, 1999 and 1998, the Company's net research and 
development expenses included $1,876,000 and $698,000 offsets, respectively, 
representing Nortel's proportionate share of development costs incurred for 
the initial project conducted under the JDA. The Company believes that its 
future success depends on its ability to maintain its technological 
leadership through enhancement of its existing products and development of 
innovative new products and services that meet customer needs. 


         Included in the results of operations for the three months ended 
March 31, 1999 is a restructuring charge of $1,435,000, of which $1,335,000 
is included as a separate component of operating expenses and $100,000 that 
is included as part of cost of revenue (see Note 4 of the Notes to the 
Condensed Consolidated Financial Statements contained herein). The 
restructuring charge is a result of the Company's plan to focus its efforts 
on market opportunities in its core business and the termination of the JDA 
with Nortel.


         Included in the results of operations for the three months ended 
March 31, 1999 is a one-time credit adjustment of $1,361,000 which represents 
an increase from 50% to 60% in Nortel's proportionate share of total 
development expenses incurred under the JDA through December 31, 1998.


          Sales and marketing expenses totaled $2,279,000 for the three 
months ended March 31, 1999, relatively unchanged from $2,280,000 for the 
three months ended March 31, 1998. The Company expects sales and marketing 
expenses will increase during 1999 as it adds addtional sales, marketing and 
technical support personnel to support increased focus on new customer 
markets and planned product introductions.

                                       11
<PAGE>


         General and administrative expenses totaled $1,261,000 for the three
months ended March 31, 1999, a 13% increase from $1,119,000 for the three months
ended March 31, 1998. The increase is attributable to higher personnel costs
associated with the business unit restructuring and higher legal and
professional services associated with the termination of the JDA. The Company
expects that general and administrative expenses may increase in 1999 as a
result of expected administrative costs related to the termination of the JDA
with Nortel and potential increased expenses related to the Company's focus on
Year 2000 issues.


         Interest income totaled $120,000 for the three months ended March 31,
1999, a 31% decrease from $175,000 for the three months ended March 31, 1998.
The decrease is the result of a decrease in cash investments during 1999
compared to 1998.


         For the three months ended March 31, 1999 and 1998, the Company
provided for income taxes related to the operations of the Company's Canadian
subsidiary, based on an effective Canadian tax rate of 50% and 46%,
respectively. At December 31, 1998, the Company had federal income tax-loss
carry-forwards of approximately $27,642,000 and California state income tax-loss
carry-forwards of approximately $5,458,000. The Company's use of approximately
$1,166,000 of its federal tax-loss carry-forwards, and $408,000 of its federal
and $105,000 of its California tax credit carry-forwards are significantly
limited as a result of ownership changes associated with equity financing in
January 1989 and March 1991. See footnote 9 to the Consolidated Financial
Statements in the December 31, 1998 Form 10-K.


         As a result of the factors discussed above, the Company incurred a 
net loss of $2,326,000 or $.18 per basic and diluted share for the three 
months ended March 31, 1999 compared to net loss of $5,208,000, or $.41 per 
basic and diluted share for the three months ended March 31, 1998. Excluding 
the one time credit adjustment of $1,361,000 and the restructuring of 
$1,435,000 charge the Company would have recorded a net loss of $2,252,000, 
or $.17 per basic and diluted share for the three months ended March 31, 1999.

LIQUIDITY AND CAPITAL RESOURCES


         Cash and investments totaled $14,733,000 at March 31, 1999 compared 
to $12,513,000 at December 31, 1998. The increase in cash is primarily due to 
advance payments received for annual maintenance, reductions in trade 
receivables and inventory offset by the net loss for the period.


         Net working capital totaled $16,222,000 at March 31, 1999 compared 
to $16,756,000 at December 31, 1998. The decrease in working capital was 
primarily the result of an increase in deferred revenue and decreases in 
inventory and trade receivables significantly offset by an increase in cash.


         The Company's operating activities for the three months ended March 31,
1999 provided $2,139,000 in cash compared to the use of $255,000 for the three 
months ended March 31, 1998. The cash provided for the first quarter of 1999 
was primarily the result of decreased trade receivables and inventory and an 
increase in deferred revenue off set by the net loss for the period. 

         Cash used for capital expenditures totaled approximately $67,000 for 
the three months ended March 31, 1999 compared to $684,000 for the three 
months ended March 31, 1998. Most of the capital additions in the first 
quarter of 1999 were for the purchase of software development tool kits and 
computer workstations. The Company did not acquire any capital equipment 
through new capital lease arrangements during the three months ended March 
31, 1999 or 1998, respectively. The Company expects that 1999 capital 
expenditures will decrease substantially from 1998 levels due to the 
termination of the JDA with Nortel. Planned expenditures will focus on 
upgrades to the Company's network infrastructure and specific needs for 
ongoing research and development projects.


         Assuming no material changes in the Company's current operating plans,
the Company believes that cash generated from operations, and the total of its
cash and investments, will be sufficient to meet its working capital and 



                                       12
<PAGE>


capital expenditure requirements for at least the next twelve months. However,
there can be no assurance that the Company will not need to seek additional
capital resources to meet working capital and capital expenditure requirements.
Additionally, significant additional capital resources may be required to fund
acquisitions of complementary businesses, products or technologies that are
focused on the Company's core business. The Company may need to issue additional
shares of its capital stock or incur indebtedness in connection with any such
acquisitions or future operations. At present, the Company does not have any
agreements or commitments with respect to any such acquisitions.


         The Company believes the impact of inflation on its business activities
has not been significant to date.


YEAR 2000 COMPLIANCE


         Many currently installed computer systems and software products are
coded to accept only two digit entries in the date code field. Without
modification, these systems and software will be unable to appropriately
interpret or recognize dates beyond the calendar year 1999. The Year 2000
computer issue could result in system failures or miscalculations causing
disruptions in business operations worldwide (including, without limitation,
disruptions in order processing, invoicing, manufacturing and similar
functions).


         The risk to ADA exists in four areas: systems used by the Company to 
run its business, systems used by the Company's suppliers, potential warranty 
or other claims from Company customers, and the potential reduced spending by 
telecommunication service providers ("TSPs") on network performance management 
products as a result of significant information systems spending on Year 2000 
remediation.


         The Company is continuing to conduct an assessment and analysis of its
internal information technology ("IT") systems to determine the potential costs
and scope of any Year 2000 issues. Based on a preliminary assessment, ADA has
determined that certain of its IT systems need to be upgraded or replaced to
address Year 2000 issues. The Company believes that all necessary upgrades or
replacements of its IT systems will be completed by June 30, 1999. Validation
testing will be conducted as IT systems are upgraded and replaced. All IT
systems that have been purchased in 1999 or 1998 are Year 2000 compliant. The
upgrades are generally covered by service contracts previously entered into by
the Company in the ordinary course of business and the cost of the upgrades and
remediation is not expected to be material to the Company's operating results.
If implementation of upgrades or replacement systems is delayed, or if
significant new non-compliance issues are identified, the Company's results of
operations or financial condition could be materially adversely affected.


         ADA has conducted a comprehensive evaluation of its non-IT systems and
equipment (e.g., facilities, and test equipment containing microprocessors or
other similar circuitry, etc.). Based on this evaluation, ADA does not expect
Year 2000 issues to have a material adverse effect on the Company's non-IT
systems and equipment. However, Year 2000 compliance for some of the Company's
non-IT systems and equipment is dependent upon upgrades to be provided by third
party vendors. The Company expects all upgrades required from third party
vendors to complete Year 2000 compliance for non-IT systems and equipment to be
completed by September 30, 1999. There can be no assurance that third party
vendor upgrades to non-IT systems and equipment will be Year 2000 complaint or
that the upgrades will be completed prior to the end of 1999 which could
negatively impact the functionality of non-IT systems and equipment that could
have a material adverse effect on the Company's revenue, operating results and
financial condition.


         In addition, the Company has made inquiries of its third party
suppliers to determine if they have any Year 2000 issues that will materially
and adversely impact the Company. To date, the Company has not been made aware
of any material Year 2000 issues which would adversely affect ADA.


         The Company believes that the majority of its current products are Year
2000 compliant. The remaining Company products are expected to be Year 2000
compliant by June 30, 1999. The Company had originally expected this process to
be completed by December 31, 1998. The Company does not expect additional
efforts required to complete Year 2000 compliance for these products will be
material. Internal validation testing is being conducted as products are being
upgraded. An independent third party also performed validation testing on one of


                                       13
<PAGE>


the Company's test and performance management products. However, since all
customer situations cannot be anticipated, particularly those involving third
party products, the Company may see an increase in warranty and other claims as
a result of the Year 2000 transition. In addition, litigation regarding Year
2000 compliance issues is expected to escalate. For these reasons, the impact of
customer claims could have a material adverse impact on the Company's operating
results or financial condition.


         Year 2000 compliance is an issue for virtually all businesses, whose 
computer systems and applications may require significant hardware and 
software upgrades or modifications. TSPs have devoted a substantial portion 
of their information systems' spending to fund such upgrades and 
modifications and have diverted spending away from network performance 
management products. Such changes in customers' spending patterns have had 
and could continue to have a material adverse impact on the Company's sales, 
operating results or financial condition.


         The Company intends to continue the review, remediation and testing of
its Year 2000 status and, to the extent necessary, it will develop Year 2000
contingency plans for critical business purposes. In addition, there can be no
assurance that Year 2000 issues will not have a material adverse effect on the
Company if ADA and/or those with whom it conducts business are unsuccessful in
identifying or implementing timely solutions to any Year 2000 problems.


RISKS AND UNCERTAINTIES


         CUSTOMER MERGERS. Many of the major TSPs currently involved in or that
have recently completed merger transactions are customers of the Company.
Several of these mergers involved companies that purchase network systems and
software products and services from the Company's competitors. Consequently,
these mergers may result in the loss of business and customers for the Company.
Additionally, the impact of capital spending constraints during the merger
transitions and thereafter has had and could continue to have a material adverse
effect on the Company's business, operating results and financial condition. In
addition, future merger transactions involving or contemplated by the Company's
current or prospective customers may cause increased concentration among some of
the Company's major customers or delays or decreases in their capital spending
decisions, any of which could have a material adverse effect on the Company's
business, operating results and financial condition.


         FLUCTUATIONS IN QUARTERLY OPERATING RESULTS; HISTORY OF LOSSES. The 
Company has experienced significant fluctuations in bookings, revenue and 
operating results from quarter to quarter due to a combination of factors and 
expects such fluctuations to continue in future periods. Factors that may 
cause the Company's results of operations to vary significantly from quarter 
to quarter include but are not limited to the size and timing of customer 
orders and subsequent shipment of systems products and implementation of OS 
software products to major customers, timing and market acceptance of product 
introductions or enhancements by the Company or its competitors, customer 
order deferrals in anticipation of new products, technological changes in the 
telecommunications industry, competitive pricing pressures, changes in the 
Company's operating expenses, personnel changes, management of a changing 
business, changes in the mix of products sold and licensed, disruption in 
sources of supply, changes in pricing policies by the Company's suppliers, 
regulatory changes, capital spending, delays of payments by customers and 
general economic conditions. The Company believes that in late 1997 it began 
experiencing seasonality in its product shipments and Operating System ("OS") 
software licensing. Generally, TSPs place more orders for products and 
licenses in the second and fourth quarters, with the orders significantly 
down in the first quarter and relatively flat in the third quarter of each 
year. The Company expects that revenue may begin to reflect these seasonal 
order cycles more closely, which could result in quarterly fluctuations. 
There can be no assurance that the TSPs will not defer or delay orders 
contrary to the historical seasonal pattern or that they will not change 
their ordering patterns. Because of the relatively fixed nature of most of 
the Company's costs, including personnel and facilities costs, any 
unanticipated shortfall in revenue in any fiscal quarter would have a 
proportionately greater impact on the Company's operating income in that 
quarter and may result in fluctuations in the price of the Company's Common 
Stock.


         As the impact of the Company's Network Management business unit on the
Company's revenue increases, the Company may be faced with greater fluctuations
in operating income. The licensing and implementation of the Company's OS
products generally involves a significant capital expenditure and a commitment
of resources by prospective customers. Accordingly, the Company is dependent on
its customers' decisions as to the timing and level 



                                       14
<PAGE>


of commitment and expenditures. In addition, the Company typically realizes a
significant portion of license revenues in the last weeks or even days of a
quarter. As a result, the magnitude of quarterly fluctuations in the Network
Management business unit may not become evident until late in, or after the
close of, a particular quarter. In addition, the Company does not recognize
service revenues until the services are rendered. The time required to implement
the Company's OS products can vary significantly with the needs of its customers
and is generally a process that extends for several months. Because of their
complexity, larger implementations may take multiple quarters to complete.
Additionally, quarter-to-quarter product mix variations, customer orders tending
to be placed late in the quarter, and competitive pressures on pricing could
have a materially adverse effect on the Company's operating results in any one
quarter. The Company's expenses are based in part on the Company's expectations
as to future revenues and to a large extent are fixed in the short term. If
revenues do not meet expectations, the Company's business, operations and
financial condition are likely to be materially adversely affected. The Company
has experienced losses in the past and there can be no assurance that the
Company will not experience losses in the future.


         COMPETITION. Competition in the Company's markets is intense and is
characterized by rapidly changing technologies, conformance with evolving
industry standards, frequent new product introductions and enhancements, rapid
changes in customer requirements, and price-competitive bidding. To maintain and
improve its competitive position, the Company must continue to develop and
introduce, in a timely and cost-effective manner, new products and features that
keep pace with increasing customer requirements. The Company expects competition
in its markets to increase from existing competitors and from other companies
which may enter the Company's current or future markets. The Company believes
the principal competitive factors affecting the market for its network systems
test and performance monitoring products are product features, price,
conformance with BellCore and other industry transmission standards and
specifications, performance and reliability, technical support, and the
maintenance of close working relationships with customers. The Company's network
systems products, especially CTS and Remote Module, are currently focused in
highly competitive market niches. The environment for CTS and Remote Module is
fiercely competitive with respect to price, product features, established
customer-supplier relationships and conformance with industry standards. The
Company believes the current competitors that provide partial solutions to
either performance monitoring or testing of the DS3, and the DS1 and DS0
circuits that make up the DS3 circuit, include Hekimian, TTC, Wiltron and some
of the manufacturers of large transmission equipment and digital cross-connect
test and performance monitoring equipment such as Lucent, Alcatel, Ericsson, ADC
Telecommunications, and Tellabs, Inc. The Company's Remote Module product
addresses the DS1 NIU market in which current competitors include Westell Inc.,
Teltrend Inc., and Troncom, Inc. In addition, in 1997, ANSI adopted certain of
the Company's Remote Module signaling technology as an industry standard. As a
result, the Company is obligated to grant licenses of this technology to third
parties, including competitors, on fair and equitable terms which has resulted
in competition from the licensees of its own technology. Many of these
competitors have significantly greater technical, financial, manufacturing, and
marketing resources than the Company.


         The Company believes there are an increasing number of current
competitors in the network management OS market that provide network management
OS applications for circuit and services provisioning and services management,
testing and test management, fault and alarm management and surveillance,
network and circuit performance monitoring and traffic management
telecommunications functions. The OS market is characterized by a wide range of
companies that have varying degrees of market influence. The nature of the
network management OS market is such that improved technologies and tool sets
have made the barriers to entry in this market relatively small resulting in
fierce competition. The principal competitive factors affecting the Company's
network management OS products include product quality, performance, price,
customer support, corporate reputation, and product features such as
scalability, interoperability, functionality and ease of use. The Company's
existing and potential competitors offer a variety of solutions to address
network management needs. Competitors include suppliers of standard
off-the-shelf products, custom software developers, large telecommunications
equipment vendors that offer software applications to manage their own and other
suppliers' equipment, such as Lucent, Nortel, Fujitsu, and Ericsson, hardware
and software vendors, including IBM, Sun Microsystems and Hewlett Packard, and
providers of specific network management and OS applications, such as BellCore,
OSI, TCSI, Architel and others. Additionally, many of the Company's existing and
potential customers continuously evaluate whether they should develop their own
network management and OS applications or license them from outside vendors. The
Company expects competition in the OS market to increase significantly in the
future. Additionally, several of the Company's competitors have long-established
relationships with the Company's current and prospective customers which may
adversely affect the 



                                       15
<PAGE>



Company's ability to successfully compete for business with these customers. In
addition, product price reductions resulting from market share penetration
initiatives or competitive pricing pressures could have a material and adverse
effect on the Company's business, operating results, and financial condition.
There can be no assurance that the Company will have the financial resources,
technical expertise or manufacturing, marketing, distribution and support
capabilities to compete successfully in the future.


         CONCENTRATION OF MAJOR CUSTOMERS; TELEPHONE COMPANY QUALIFICATION
REQUIREMENTS. The market for the Company's products and services currently
consists of the five RBOCs, IXCs, ILECs, CLECs, emerging carriers, ISPs,
enterprise networks and other TSPs. Historically, the Company's marketing
efforts focused primarily on the RBOCs, which accounted for approximately 31%,
47% and 57% of the Company's total revenue in 1997, 1998, and the three months
ended March 31, 1999, respectively. However, the Company's strategy has been to
focus its efforts on diversifying its customer base. RBOC and IXC customers
accounted for 57% and 3% of the Company's total revenue for the three months
ended March 31, 1999 and 47% and 23% for the year ended December 31, 1998,
respectively. The increased customer base is primarily a function of the
Company's acquisitions in 1996 and 1997. As a result of these acquisitions, the
Company added OS related products and services that the Company has been able to
market to a wider group of customers. In addition, the Company added a number of
TSPs that were new customers to the Company. To date, the OS customers tend to
be long distance telephone companies, CLECs, emerging carriers and enterprise
vendors who have not invested in legacy systems from BellCore. While the Company
believes its customer base diversification is beneficial to the Company, there
can be no assurances that the Company will be able to continue expanding the
distribution of its OS and system products and services to additional
prospective customers. In addition, the Company's customers are significantly
larger than the Company and may be able to exert a high degree of influence over
the Company. The loss of one or more of the Company's major customers, the
reduction of orders, a delay in deployment of the Company's products or the
cancellation, modification or non-renewal of license or maintenance agreements
could materially and adversely affect the Company's business, operating results
and financial condition. BellSouth, Ameritech, Southwestern Bell and MCI
WorldCom have entered into purchase contracts with the Company. MCI WorldCom has
also entered into license agreements with the Company. Other TSPs purchase the
Company's network system products and license OS products under standard
purchase orders. Since the RBOC and MCI WorldCom contracts may be terminated at
either the customer's or the Company's convenience, the Company believes that
the purchase contracts and license agreements are not materially different than
purchasing or licensing under purchase orders. Prior to selling products to
RBOCs and certain other TSPs, a vendor must often first undergo a product
qualification process with the TSP for its products. Although the qualification
process for a new product varies somewhat among these prospective customers, the
Company's experience is that the process often takes a year or more. Currently,
the five RBOCs, MCI WorldCom and several other customers have qualified the
Company's products, when required. Any failure on the part of any of the
Company's customers to maintain their qualification of the Company's products,
failure of any of the TSPs to deploy the Company's products, or any attempt by
any of the TSPs to seek out alternative suppliers could have a material adverse
effect on the Company's business, operating results and financial condition.
There can be no assurance that the Company's products will be qualified by new
customers, or that such qualification will not be significantly delayed.
Furthermore, work force reductions and staff reassignments by some of the
Company's customers have in the past delayed the product qualification process,
and the Company expects such reductions and reassignments to continue in the
future. There can be no assurance that such reductions and reassignments will
not have a material adverse effect on the Company's business, operating results
and financial condition.


         DEPENDENCE ON TWO PRODUCT LINES. Historically, the majority of the
Company's revenue has been derived from the sale of its network systems products
and services. However, as a result of acquisitions completed in 1996 and 1997,
the Company added additional product lines and derived revenue from a product
mix of both network systems products and services and network management OS
software products and services. Revenue from network systems products and
services, including CTS, T3AS and Remote Module, generated 56% and 67% of the
Company's total revenues for the year ended December 31, 1998 and the three
months ended March 31, 1999, respectively. Revenue from network management OS
products and services, including software design services, .Provisioner, Test
OS, TDC&E and FMS, generated 44% and 33% of the Company's total revenue for the
year ended December 31, 1998 and three months ended March 31, 1999,
respectively. However, there can be no assurance that the Company's future
revenues will not be heavily dependent on sales from only one of its primary
product lines. The Company is investing in the expansion of these two product
lines through the enhancement, development and marketing of its NIU, CTS, NEPA,
T3AS, Test OS, .Provisioner, TDC&E and FMS products. 


                                       16
<PAGE>


Failure by the Company to enhance either its existing products and services or
to develop new product lines and new markets could materially and adversely
affect the Company's business, operating results and financial condition. There
is no assurance that the Company will be able to develop and market new products
and technology or otherwise diversify its source of revenue.


         MANAGEMENT OF CHANGING BUSINESS. As a result of acquisitions in 1996 
and 1997, the Company formed two business units around the Company's product 
lines: the Network Systems business unit and the Network Management business 
unit. The Network Systems business unit is built around the Company's test 
and performance management products, including T3AS, CTS, Remote Module, 
Sectionalizer, NEPA and PAAS products. The Network Management business unit 
focuses on OS software products including .Provisioner, TDC&E, Test OS, GTA, 
FMS, and OS design services. These business units operate in four separate 
geographic locations. The Company continues to face significant management 
challenges related to the integration of the business operations of these 
business units. The acquisitions and resultant growth in the Company's 
infrastructure have placed, and are expected to continue to place, a 
significant strain on the Company's management, information systems and 
operations. The strain experienced to date has chiefly been in management of 
a geographically distributed organization, and in hiring sufficient numbers 
of qualified personnel to support the expansion of the business. The Company 
may also make future acquisitions where it believes it can acquire new 
products or otherwise rapidly enter new or emerging markets. Mergers and 
acquisitions of high technology companies are inherently risky and can place 
significant strains on the Company's management, information systems and 
operations. The Company is not able to forecast additional strains that may 
be placed on the Company's management, information systems and operations as 
a result of recent or future acquisitions or in the future. The Company's 
potential inability to manage its changing business effectively could have a 
material adverse effect on the Company's business, operating results, and 
financial condition. Additionally, as a result of the termination of the JDA, 
the Company discontinued operations conducted at its Richardson, Texas 
facility. There can be no assurance that the Company will not incur 
significant expenses related to the closure of the Texas facility that could 
have a material impact on the Company's business, operating results and 
financial condition.


         RAPID TECHNOLOGICAL CHANGE AND DEPENDENCE ON NEW PRODUCTS. The market
for the Company's products is characterized by rapid technological advances,
evolving industry transmission standards, changing regulatory environments,
price-competitive bidding, changes in customer requirements, and frequent new
product introductions and enhancements. The introduction of telecommunications
network performance management products involving superior technologies or the
evolution of alternative technologies or new industry transmission standards
could render the Company's existing products, as well as products currently
under development, obsolete and unmarketable. The Company believes its future
success will depend in part upon its ability, on a cost-effective and timely
basis, to continue to enhance its products, to develop and introduce new
products for the telecommunications network performance management market, to
address new industry standards and changing customer needs and to achieve broad
market acceptance for its products. In particular, the Company anticipates that
the SONET and SDH optical transmission standards will become the industry
transmission standards over the coming years for the North American and
international networks, respectively. The Company's current network circuit test
and performance monitoring systems do not address either the SONET or SDH
transmission standards. The Company intends to extend its current products and
develop new products to accommodate such new transmission standards and other
advances in technology, as they evolve. The widespread adoption of SONET and/or
SDH as industry transmission standards before the Company is able to
successfully develop products which address such transmission standards could in
the future adversely affect the sale and deployment of the Company's products.


         The Company's OS products are designed to operate on a variety of
hardware and software platforms and with a variety of databases employed by its
customers in their networks. The Company must continually modify and enhance its
OS products to keep pace with changes in hardware and software platforms and
database technology. As a result, uncertainties related to the timing and nature
of new product announcements, introductions or modifications by systems vendors,
particularly, Sun Microsystems and Hewlett Packard, and by vendors of relational
database software, particularly, Oracle Corporation, could materially adversely
impact the Company's business, operating results and financial condition. In
addition, the failure of the Company's OS products to operate across the various
existing and evolving versions of hardware and software platforms and database
environments employed by customers would have a material adverse effect on the
Company's business, operating results and financial condition.



                                       17
<PAGE>



         The introduction or announcement of products by the Company or one or
more of its competitors embodying new technologies, or changes in industry
standards or customer requirements, could render the Company's existing products
and solutions obsolete and unmarketable. The introduction of new or enhanced
versions of its products requires the Company to manage the transition from
older products in order to minimize disruption in customer ordering. There can
be no assurance that the introduction or announcement of new product offerings
by the Company or its competitors will not cause customers to defer licensing or
purchasing of existing Company products or engaging the Company's services. Any
deferral of revenues could have a material adverse effect on the Company's
business, operating results and financial condition.


         Any failure by the Company to anticipate or respond on a cost-effective
and timely basis to technological developments, changes in industry transmission
standards or customer requirements, or any significant delays in product
development or introduction could have a material adverse effect on the
Company's business. There can be no assurance that the Company will be able to
successfully develop new products to meet customer requirements, to address new
industry transmission standards and technological changes or to respond to new
product announcements by others, or that such products will achieve market
acceptance.


         DEPENDENCE ON SUPPLIERS AND SUBCONTRACTORS. Certain components used in
the Company's T3AS, CTS, PAAS and Remote Module products, including its VLSI
ASICs, are available from a single source and other components are available
from only a limited number of sources. The Company has few supply agreements and
generally makes its purchases with purchase orders. Further, certain components
require an order lead time of up to one year. Other components that currently
are readily available may become difficult to obtain in the future. Failure of
the Company to order sufficient quantities of these components in advance could
prevent the Company from increasing production in response to customer orders in
excess of amounts projected by the Company. In the past, the Company has
experienced delays in the receipt of certain of its key components, which have
resulted in delays in product deliveries. There can be no assurance that delays
in key component and part deliveries will not occur in the future.


         The inability to obtain sufficient key components as required or to
develop alternative sources if and as required in the future could result in
delays or reductions in product shipments, which in turn could have a material
adverse effect on the Company's customer relationships and operating results.
Additionally, the Company uses third-party subcontractors for the manufacture of
its sub-assemblies. This reliance on third-party subcontractors involves several
risks, including the potential absence of adequate capacity, the unavailability
of or interruption in access to certain process technologies, and reduced
control over product quality, delivery schedules, manufacturing yields and
costs. Shortages of raw materials or production capacity constraints at the
Company's subcontractors could negatively affect the Company's ability to meet
its production obligations and could result in increased prices for affected
parts.


         HIGH INVENTORY LEVELS AND NEED TO MAKE ADVANCE PURCHASE COMMITMENTS. To
respond to anticipated customer demand, the Company maintains high inventory
levels. Maintaining high inventory levels substantially increases the risk that
the Company's profitability and results of operations may from time to time be
materially and adversely affected by inventory obsolescence. To procure adequate
supplies of certain products or components, the Company must make advance
commitments to purchase relatively large quantities of such products or
components in a number of circumstances. A large portion of the Company's
purchase commitments consists of custom parts, some of which are sole-source
such as VLSI ASICs, for which there is no alternative use or application. In the
first quarter of 1998, the Company recorded a charge for inventory obsolescence
totaling $378,000. The inability of the Company to sell such products or
incorporate such components in its other products could have a material adverse
effect on the Company's business, operating results and financial condition.


         YEAR 2000 COMPLIANCE. Many currently installed computer systems and
software products are coded to accept only two digit entries in the date code
field. Without modification, these systems and software will be unable to
appropriately interpret or recognize dates beyond the calendar year 1999. The
Year 2000 computer issue could result in system failures or miscalculations
causing disruptions in business operations worldwide (including, without
limitation, disruptions in order processing, invoicing, manufacturing and
similar functions).



                                       18
<PAGE>



         The risk to ADA exists in four areas: systems used by the Company to
run its business, systems used by the Company's suppliers, potential warranty or
other claims from Company customers, and the potential reduced spending by TSPs
on network performance management products as a result of significant
information systems spending on Year 2000 remediation.


         The Company is continuing to conduct an assessment and analysis of its
internal information technology ("IT") systems to determine the potential costs
and scope of any Year 2000 issues. Based on a preliminary assessment, ADA has
determined that certain of its IT systems need to be upgraded or replaced to
address Year 2000 issues. The Company believes that all necessary upgrades or
replacements of its IT systems will be completed by June 30, 1999. Validation
testing will be conducted as IT systems are upgraded and replaced. All IT
systems that have been purchased in 1999 or 1998 are Year 2000 compliant. The
upgrades are generally covered by service contracts previously entered into by
the Company in the ordinary course of business and the cost of the upgrades and
remediation is not expected to be material to the Company's operating results.
If implementation of upgrades or replacement systems is delayed, or if
significant new non-compliance issues are identified, the Company's results of
operations or financial condition could be materially adversely affected.


         ADA has conducted a comprehensive evaluation of its non-IT systems and
equipment (e.g., facilities, and test equipment containing microprocessors or
other similar circuitry, etc.). Based on this evaluation, ADA does not expect
Year 2000 issues to have a material adverse effect on the Company's non-IT
systems and equipment. However, Year 2000 compliance for some of the Company's
non-IT systems and equipment is dependent upon upgrades to be provided by third
party vendors. The Company expects all upgrades required from third party
vendors to complete Year 2000 compliance for non-IT systems and equipment to be
completed by September 30, 1999. There can be no assurance that third party
vendor upgrades to non-IT systems and equipment will be Year 2000 complaint or
that the upgrades will be completed prior to the end of 1999 which could
negatively impact the functionality of non-IT systems and equipment that could
have a material adverse effect on the Company's revenue, operating results and
financial condition.


         In addition, the Company has made inquiries of its third party
suppliers to determine if they have any Year 2000 issues that will materially
and adversely impact the Company. To date, the Company has not been made aware
of any material Year 2000 issues which would adversely affect ADA.


         The Company believes that the majority of its current products are Year
2000 compliant. The remaining Company products are expected to be Year 2000
compliant by June 30, 1999. The Company had originally expected this process to
be completed by December 31, 1998. The Company does not expect additional
efforts required to complete Year 2000 compliance for these products will be
material. Internal validation testing is being conducted as products are being
upgraded. An independent third party also performed validation testing on one of
the Company's test and performance management products. However, since all
customer situations cannot be anticipated, particularly those involving third
party products, the Company may see an increase in warranty and other claims as
a result of the Year 2000 transition. In addition, litigation regarding Year
2000 compliance issues is expected to escalate. For these reasons, the impact of
customer claims could have a material adverse impact on the Company's operating
results or financial condition.


         Year 2000 compliance is an issue for virtually all businesses, whose
computer systems and applications may require significant hardware and software
upgrades or modifications. TSPs have devoted a substantial portion of their
information systems' spending to fund such upgrades and modifications and divert
spending away from network performance management products. Such changes in
customers' spending patterns have had and could continue to have a material
adverse impact on the Company's sales, operating results or financial condition.



         The Company intends to continue the review, remediation and testing of
its Year 2000 status and, to the extent necessary, it will develop Year 2000
contingency plans for critical business purposes. In addition, there can be no
assurance that Year 2000 issues will not have a material adverse effect on the
Company if ADA and/or those with whom it conducts business are unsuccessful in
identifying or implementing timely solutions to any Year 2000 problems.



                                       19
<PAGE>


         PRODUCT RECALL AND DEFECTS. Producers of telecommunications network
performance management products such as those being marketed by the Company, are
often required to meet rigorous standards imposed by BellCore, the research and
development entity created following the divestiture of AT&T to provide ongoing
engineering support to the RBOCs. In addition, the Company must meet specialized
standards imposed by many of its customers. The Company's products are also
required to interface in a complex and changing environment with
telecommunication network equipment made by numerous other suppliers. Since many
of these suppliers are competitors of the Company, there can be no assurance
that they will cooperate with the Company. In the event there are material
deficiencies or defects in the design or manufacture of the Company's systems,
or if the Company's systems become incompatible with existing third-party
network equipment, the affected products could be subject to a recall. The
Company has experienced two significant product recalls in its history and there
can be no assurance that the Company will not experience any product recalls in
the future. The cost of any subsequent product recall and associated negative
publicity could have a material adverse effect on the Company's business,
operating results and financial condition. In addition, the Company's
development and enhancement of its complex OS products entails substantial risks
of product defects. There can be no assurance that software errors will not be
found in existing or new products or releases after commencement of commercial
licensing, which may result in delay or loss of revenue, loss of market share,
failure to achieve market acceptance, or may otherwise adversely impact the
Company's business, operating results and financial condition.


         GOVERNMENT REGULATION. The majority of the Company's customers operate
within the telecommunications industry which is subject to regulation in the
United States and other countries. Most of the Company's customers must receive
regulatory approvals in conducting their businesses. Although the
telecommunications industry has recently experienced government deregulation,
there is no assurance this trend will continue. Moreover, the federal and state
courts and the FCC continue to interpret and clarify the provisions of the 1996
Telecommunications Act. In fact, recent regulatory rulings have affected the
ability of the Company's customers to enter new markets and deliver new services
which could impact their ability to make significant capital expenditures. The
effect of judicial or regulatory rulings by federal and state agencies on the
Company's customers may adversely impact the Company's business, operating
results and financial condition.


         POTENTIAL COMPETITION FROM RBOCS. The 1996 Telecommunications Act has
generally eliminated the restrictions which had previously prohibited the RBOCs
from manufacturing telecommunications equipment (subject to first satisfying
certain conditions designed to facilitate local exchange competition and receipt
of prior approval by the FCC). These restrictions had been imposed under the
Modification of Final Judgment, which governed the structure of the 1984
divestiture by AT&T of its local operating telephone company subsidiaries. The
passage of the 1996 Telecommunications Act may have an adverse effect on the
Company because the RBOCs, which are presently the Company's principal
customers, may now become manufacturers of some or all of the products currently
manufactured and sold by the Company and, consequently, may no longer purchase
telecommunications equipment produced by the Company at the levels historically
experienced.


         PROPRIETARY TECHNOLOGY. The Company relies on a combination of
technical leadership, patent, trade secret, copyright and trademark protection
and non-disclosure agreements to protect its proprietary rights. Although the
Company has pursued and intends to continue to pursue patent protection of
inventions that it considers important and for which such protection is
available, the Company believes its success will be largely dependent on its
reputation for technology, product innovation, affordability, marketing ability
and response to customers needs. Currently, the Company has fifteen U.S. patents
granted. Additionally, the Company has three pending U.S. patent applications on
file covering various circuit and system aspects of its products. There can be
no assurance that the Company will be granted additional patents or that, if any
patents are granted, they will provide the Company's products with significant
protection or will not be challenged. Additionally, should a third party
challenge any of the Company's current or future patents, there can be no
assurance that the Company will be successful in defending its patents or that
any litigation, regardless of outcome, will not result in substantial cost to
and diversion of efforts by the Company. As part of its confidentiality
procedures, the Company generally enters into non-disclosure agreements with its
employees, consultants and suppliers, and limits access to and distribution of
its proprietary information. Despite these precautions, it may be possible for a
third party to copy or otherwise obtain and use the Company's technology without
authorization. Accordingly, there can be no assurance that the Company will be
successful in protecting its proprietary technology or that ADA's proprietary
rights will preclude competitors from developing products or technology
equivalent or superior to that of the Company.


                                       20
<PAGE>

         The telecommunications industry is characterized by the existence of a
large number of patents and frequent litigation based on allegations of patent
infringement. The Company is currently not party to any litigation regarding any
patents or other intellectual property rights. However, there can be no
assurance that third parties will not assert infringement claims against the
Company in the future or that any such assertions will not result in costly
litigation or require the Company to obtain a license to intellectual property
rights of such parties. There can be no assurance that any such licenses would
be available on terms acceptable to the Company, if at all. Further, litigation,
regardless of outcome, could result in substantial cost to and diversion of
efforts by the Company. Any infringement claims or litigation by or against the
Company could materially and adversely affect the Company's business, operating
results and financial condition. Moreover, the laws of some foreign countries do
not protect the Company's proprietary rights in the products to the same extent
as do the laws of the United States.


         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 or that such licenses
will not be terminated. Although the Company believes that alternative software
is available from other third party suppliers, the loss of or inability of the
third parties to enhance their products in a timely and cost-effective manner
could result in delays or reductions in product shipments by the Company until
equivalent software could be developed internally or identified, licensed, and
integrated, which could have a material adverse effect on the Company's
business, operating results and financial condition.


         DEPENDENCE ON KEY PERSONNEL. The success of the Company is dependent,
in part, on its ability to attract and retain highly qualified personnel.
Competition for such personnel is intense and the inability to attract and
retain additional key employees or the loss of one or more current key employees
could adversely affect the Company. There can be no assurance that the Company
will be successful in hiring or retaining requisite personnel.


         VOLATILITY OF STOCK PRICE. The Company's future earnings and stock
price may be subject to significant volatility, particularly on a quarterly
basis. Any shortfall in revenue or earnings from levels expected by public
market analysts and investors could have an immediate and significant adverse
effect on the trading price of the Company's Common Stock. Fluctuation in the
Company's stock price may also have an effect on customer decisions to purchase
the Company's products which could have a material adverse effect on the
Company's business, operating results and financial condition.


ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 


         Not required.


                                        21
<PAGE>

                          PART II - OTHER INFORMATION


ITEM 1.  LEGAL PROCEEDINGS


           From time to time, ADA may be involved in litigation relating to
claims arising out of its operations in the normal course of business. As of the
date of this Report, the Company is not a party to any legal proceedings


ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS


         None.

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES


         None.


ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS


         None.


 ITEM 5.  OTHER INFORMATION


         None.


ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

(a)      EXHIBITS


              EXHIBIT NUMBER

                   3.3 (1)   Certificate of Incorporation of the Company

                   3.4 (2)   Certificate of Agreement of Merger of the 
                             Company and its California predecessor
 
                   3.5 (1)   Bylaws of the Company

                  27.1       Financial Data Schedule

(1) Incorporated by reference to the Company's Current Report on Form 8-K 
    dated December 23, 1997 (File No. 0-23698)

(2) Incorporated by reference to the Company's Current Report on Form 8-K/A 
    dated January 12, 1998 (File No. 0-23698)

(b)      REPORTS ON FORM 8-K.


              None.

                                       22

<PAGE>


                                   SIGNATURES


         Pursuant to the requirements of the Securities Exchange Act of 1934,
this Report has been signed below by the following persons on behalf of the
Registrant in the capacities and on the dates indicated.



<TABLE>
<CAPTION>

            SIGNATURE                                       TITLE                        DATE
            ---------                                       -----                        ----
<S>                                               <C>                           <C>
By:   /s/  Donald L. Strohmeyer                   President, Chief Executive          May 17, 1999
   ---------------------------------              Officer and Director
         (Donald L. Strohmeyer)                   (Principal Executive
                                                  Officer)

By:   /S/  James L. Keefe                         Vice President, Finance             May 17, 1999
   ---------------------------------              and Administration, Chief  
         (James L. Keefe)                         Financial Officer,
                                                  Secretary
                                                  (Principal Accounting
                                                  Officer)
                                                           


</TABLE>









                                       23

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