FASTCOMM COMMUNICATIONS CORP
S-3, 1997-05-02
TELEPHONE & TELEGRAPH APPARATUS
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       As filed with the Securities and Exchange Commission on May 1, 1997
                                                   Registration No. 333-

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

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    Form S-3
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                       FASTCOMM COMMUNICATIONS CORPORATION
             (Exact name of registrant as specified in its charter)

            Virginia                                           54-289115       
(State or other jurisdiction of                            (I.R.S. Employer    
 incorporation or organization)                         Identification Number) 

                               45472 Holiday Drive
                            Sterling, Virginia 20166
                            Telephone: (703) 318-7750

    (Address of principal place of business, and address and telephone number
                         of principal executive offices)

             Mark H. Rafferty                              Copy to:           
          Chief Financial Officer                    Thomas G. Amon, Esq.     
    FastComm Communications Corporation                 Amon & Sabatini       
            45472 Holiday Drive                       437 Madison Avenue      
         Sterling, Virginia 20166                  New York, New York 10022   
         Telephone: (703) 318-7750                 Telephone: (212) 759-9030  
    (Name, address and telephone number            (Counsel for Registrant)   
           of agent for service)        

Approximate  date of commencement  of proposed sale to the public:  From time to
time after the effective date of this Registration Statement.

If the only securities  being registered on this form are being offered pursuant
to a  dividend  or  interest  reinvestment  plans,  please  check the  following
box.  [ ]

If any of the  securities  being  registered on this Form are to be offered on a
delayed or continuous  basis  pursuant to Rule 415 under the  Securities  Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box.  [X]

If this Form is filed to register additional securities for an offering pursuant
to Rule 462(b) under the Securities Act, please check the following box and list
the  Securities  Act  registration  statement  number of the  earlier  effective
registration statement for the same offering.  [ ]

If this Form is a  post-effective  amendment filed pursuant to Rule 462(c) under
the  Securities  Act,  check  the  following  box and  list the  Securities  Act
registration  statement number of the earlier effective  registration  statement
for the same offering.  [ ]

If delivery  of the  prospectus  is  expected  to be made  pursuant to Rule 434,
please check the following box.  [ ]

                         CALCULATION OF REGISTRATION FEE
<TABLE>
<CAPTION>
===================================================================================================================================
                                                                     Proposed maximum     Proposed maximum
Title of each class of securities to be registered   Amount to be   offering price per  aggregated offering  Amount of registration
                                                     registered(1)       share(2)              price                  fee
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                                    <C>                 <C>              <C>                    <C>      
Common Shares, par value $.01 per share ..........     3,190,591           $4.00            $12,762,364            $3,829.00
- -----------------------------------------------------------------------------------------------------------------------------------

===================================================================================================================================
</TABLE>

(1)  Pursuant to Rule 416(a),  also  registered  hereunder  is an  indeterminate
     number of Shares of Common Stock issuable as a result of the  anti-dilution
     provisions of the  Debentures and Preferred  Stock it is convertible  into,
     and warrants exercisable for the shares of Common Stock registered hereby.

(2)  Estimated  solely  for  the  purpose  of  calculating  the  amount  of  the
     registration  fee and based,  pursuant to Rule 457, on the closing price of
     the Common Stock of the Company on the NASDAQ on April 28, 1997.


The Registrant hereby amends this  Registration  Statement on such date or dates
as may be necessary to delay its effective date until the Registrant  shall file
a further amendment which specifically  states that this Registration  Statement
shall  thereafter  become  effective  in  accordance  with  Section  8(a) of the
Securities  Act of  1933 or  until  this  Registration  Statement  shall  become
effective  on such  date  as the  Securities  and  Exchange  Commission,  acting
pursuant to Section 8(a), may determine.

<PAGE>

                       FastComm Communications Corporation

                              CROSS REFERENCE SHEET

Pursuant to Item 501(b) of  Regulation  S-K Showing  Location in  Prospectus  of
information required by Items of Form S-3.

Item Number and heading in Form S-3
Registration Statement                  Caption or Location in Prospectus      
- -----------------------------------     ---------------------------------       
                                                                                
1.  Forepart of the Registration        Forepart of the Registration  Statement;
    Statement and Outside Front         Outside Front Cover Page of Prospectus  
    Cover Page of Prospectus                                                    
                                                                                
2.  Inside Front and Outside Back       Inside Front and Outside Back Cover Page
    Cover Pages of Prospectus           of Prospectus                           
                                                                                
3.  Summary Information and Risk        The Company; Certain Risk Factors       
    Factors                                                                     
                                                                                
4.  Use of Proceeds                     Use of Proceeds                         
                                                                                
5.  Determination of Offering Price     Outside Front Cover Page of Prospectus  
                                                                                
6.  Dilution                            Not Applicable                          
                                                                                
7.  Selling Security Holders            Selling Shareholders                    
                                                                                
8.  Plan of Distribution                Outside Front Cover Page of  Prospectus;
                                        Plan of Distribution                    
                                                                                
9.  Description of Securities to be     Not Applicable                          
    Registered                                                                  
                                                                                
10. Interests of Named Experts and      Experts                                 
    Counsel                                                                     
                                                                                
11. Material Change                     Not Applicable                          
                                                                                
12. Incorporation of Certain            Documents Incorporated by Reference     
    Information by Reference                                                    
                                                                                
13. Disclosure of Commission            Not Applicable                          
    Position                                                                    

<PAGE>

INFORMATION   CONTAINED  HEREIN  IS  SUBJECT  TO  COMPLETION  OR  AMENDMENT.   A
REGISTRATION  STATEMENT  RELATING  TO THESE  SECURITIES  HAS BEEN FILED WITH THE
SECURITIES  AND EXCHANGE  COMMISSION.  THESE  SECURITIES MAY NOT BE SOLD NOR MAY
OFFERS TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION  STATEMENT  BECOMES
EFFECTIVE.  THIS  PROSPECTUS  SHALL  NOT  CONSTITUTE  AN  OFFER  TO  SELL OR THE
SOLICITATION OF AN OFFER TO BUY NOR SHALL THERE BE ANY SALE OF THESE  SECURITIES
IN ANY STATE IN WHICH SUCH OFFER,  SOLICITATION  OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.



                    SUBJECT TO COMPLETION, DATED MAY 1, 1997

                             PRELIMINARY PROSPECTUS

                                3,190,591 Shares

                       FASTCOMM COMMUNICATIONS CORPORATION

                                  Common Stock


     This Prospectus  relates to 3,190,591  shares (the "Shares" or the "Offered
Shares") of common  stock,  par value $.01 per share (the  "Common  Stock"),  of
FastComm Communications Corporation, a Virginia corporation (the "Company"). The
Shares are issuable by the Company upon:  (i) the  conversion of (a)  $5,000,000
principal   amount  of  the   Company's   1997   Convertible   Debentures   (the
"Debentures"), or (b) if approved by the Company's, shareholders,  conversion of
shares of a to-be created class of Series A Preferred  Stock of the Company into
which the Debentures  may be converted at the option of the Company  ("Preferred
Stock");  and (ii)  exercise of the warrants  (the  "Warrants")  issuable  under
certain  circumstances,  upon conversion of Debentures and Preferred  Stock. The
Company  issued  the  Debentures  in a  private  placement  transaction  to four
accredited  investors.  See "Selling  Shareholders."  Additional Shares that may
become issuable as a result of the  anti-dilution  or default  provisions of the
Debentures (or Preferred  Stock) and the Warrants are offered hereby pursuant to
Rule 416 under the Securities Act of 1933, as amended (the "Securities Act"). In
addition,  190,551 of the Shares have been, or may be, issued to Richard L. Apel
in  connection  with  the  acquisition  by  the  Company  of  Comstat   DataComm
Corporation on January 31, 1997. See "Selling Shareholders."

     The Company  will not receive any  proceeds  from the sale of Shares by the
Selling  Shareholders,  but will  receive the  exercise  price  payable upon the
exercise of the Warrants if those  Warrants are issued and  exercised  for cash.
There can be no assurance that all or any part of the Warrants will be issued or
that they will be exercised for cash. All expenses  incurred in connection  with
this  offering are being borne by the  Company,  other than any  commissions  or
discounts paid or allowed by the Selling Shareholders to underwriters,  dealers,
brokers or agents and legal fees of counsel to the Selling Shareholders, if any.

     The Shares being registered under the Registration  Statement of which this
Prospectus  is a part may be  offered  for sale  from time to time by or for the
account of such Selling  Shareholders in the open market, on the NASDAQ National
Market, in privately negotiated transactions,  in an underwritten offering, or a
combination of such methods, at market prices prevailing at the time of sale, at
prices related to such  prevailing  market prices or at negotiated  prices.  The
Offered  Shares are  intended to be sold through one or more  broker-dealers  or
directly to purchasers. Such broker-dealers may receive compensation in the form
of commissions,  discounts or concessions from the Selling  Shareholders  and/or
purchasers of the Offered Shares for whom such  broker-dealers may act as agent,
or to whom  they may sell as  principal,  or both  (which  compensation  as to a
particular broker-dealer may be in excess of customary concessions). The Selling
Shareholders  and any  broker-dealers  who act in  connection  with  the sale of
Offered Shares hereunder may be deemed to be  "underwriters"  within the meaning
of the Securities Act, and any commissions  received by them and proceeds of any
resale of the  Offered  Shares may be deemed to be  underwriting  discounts  and
commissions  under the Securities Act, See "Selling  Shareholders"  and "Plan of
Distribution."

     The Common Stock of the Company is listed on the NASDAQ-NMS (Symbol; FSCX).
The Shares  offered  hereby  involve a high degree of RISK.  See  "CERTAIN  RISK
FACTORS" at page 3 of this Prospectus.



                   THESE SECURITIES HAVE NOT BEEN APPROVED OR
                   DISAPPROVED BY THE SECURITIES AND EXCHANGE
                  COMMISSION OR ANY STATE SECURITIES COMMISSION
              NOR HAS THE SECURITIES AND EXCHANGE COMMISSION OR ANY
              STATE SECURITIES COMMISSION PASSED UPON THE ACCURACY
               OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION
                     TO THE CONTRARY IS A CRIMINAL OFFENSE.

                   The date of this Prospectus is May   , 1997


                                        1
<PAGE>

                              AVAILABLE INFORMATION

     The  Company is subject to the  reporting  requirements  of the  Securities
Exchange Act of 1934, as amended (the "1934 Act"),  and in accordance  therewith
files reports and other  information  with the  Commission.  Reports,  proxy and
information  statements,  and other  information  filed by the Company  with the
Commission  can be inspected  and copied,  at  prescribed  rates,  during normal
business hours at the public reference  facilities  maintained by the Commission
at 450  Fifth  Street,  N.W.  Room  1024,  Washington,  D.C.  20549,  and at the
following   Regional  Offices  of  the  Commission:   Chicago  Regional  Office,
NorthWestern  Atrium  Center,  500 West  Madison  Street,  Suite 1400,  Chicago,
Illinois  60661-2511;  New York Regional Office,  75 Park Place, 14th Floor, New
York,  New  York  10007.  Electronic  filings  of such  documents  are  publicly
available on the  Commission's  Web Site at  http://www.sec.gov.  Copies of such
materials  can  also be  obtained  from  the  Public  Reference  Section  of the
Commission, 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates.

     A  registration  statement on Form S-3 in respect of the Shares  offered by
this  Prospectus  (the  "Registration   Statement")  has  been  filed  with  the
Securities and Exchange Commission (the "Commission"),  Washington,  D.C. 20549,
under the 1933 Act.  This  Prospectus  does not contain  all of the  information
contained in the  Registration  Statement,  certain  portions of which have been
omitted  pursuant to the rules and regulations of the  Commission.  Accordingly,
additional  information  concerning the Company and such securities can be found
in the Registration Statement,  including various exhibits thereto, which may be
inspected at the Public Reference Section of the Commission.

                       DOCUMENTS INCORPORATED BY REFERENCE

     The following documents are incorporated by reference into this Prospectus:

     1.   Form 10-K for the fiscal  year ended  April 30,  1996,  filed with the
          Commission pursuant to Section 13(a) of the 1934 Act;

     2.   Form 10-K/A for the fiscal year ended April 30,  1996,  filed with the
          Commission pursuant to Section 13(a) of the 1934 Act;


     3.   Form 10-Q for the fiscal  quarters  ended August 3, 1996,  November 2,
          1996 and February 1, 1997 filed  pursuant to Section 13(a) of the 1934
          Act since the end of the fiscal  year  covered  by the  Annual  Report
          referred to above;

     4.   The  description of the Company's  Common Stock  registered  under the
          1934 Act contained in the Company's Form 8-A filed with the Commission
          on September 8, 1988,  including  any  amendments or reports filed for
          the purpose of updating such description.

     All documents filed by the Company pursuant to Section 13(a),  13(c), 14 or
15(d) of the 1934 Act subsequent to the date of this Prospectus and prior to the
termination of this offering,  shall be deemed to be  incorporated  by reference
into  this  prospectus.   Any  statement  contained  herein  or  in  a  document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or superseded  for purposes of this  Prospectus to the extent that a
statement  contained  herein or in any other  subsequently  filed document which
also  is or is  deemed  to be  incorporated  by  reference  herein  modifies  or
supersedes  such statement.  Any such statement so modified or superseded  shall
not be deemed, expect as so modified or superseded, to constitute a part of this
Prospectus.

     The  Company  will  provide  without  charge  to each  person  to whom this
Prospectus  is delivered,  upon  request,  a copy of any or all of the foregoing
documents  incorporated  herein by  reference  (not  including  exhibits  to the
information   that  is  incorporated  by  reference  unless  such  exhibits  are
specifically incorporated by reference into the information that this Prospectus
incorporated).   Requests   should  be  directed   to  FastComm   Communications
Corporation,  45472 Holiday Drive,  Sterling,  Virginia  20166,  (703) 318-7750,
Attention: Investor Relations.

     No  person  has  been  authorized  to give any  information  or to make any
representation other than those contained in, or incorporated by reference into,
this Prospectus, and, if given or made, such information or representations must
not be relied  upon as having  been  authorized  by the  Company or any  Selling
Shareholders.   This  Prospectus  does  not  constitute  an  offer  to  sell  or
solicitation  of an offer to buy, nor shall there be any sale of these Shares by
anyone,  in any  state in  which  such  offer,  solicitation,  or sale  would be
unlawful prior to the registration or qualification under the securities laws of
any state,  or in which the person  making  such  offer or  solicitation  is not
qualified  to do so, or to any person to whom it is  unlawful to make such offer
or solicitation. Neither delivery of this Prospectus nor any sale made hereunder
shall,  under any  circumstances,  create any implication that there has been no
change in the  information  herein or the affairs of the Company  since the date
hereof.


                                        2

<PAGE>

              CAUTIONARY STATEMENT FOR PURPOSES OF THE SAFE HARBOR
                                PROVISIONS OF THE
                PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995

     The  Common  Stock  offered  hereby  involves  a high  degree  of risk.  In
addition,  this  Prospectus and the documents  incorporated  herein by reference
contain certain  "forward-looking  statements" within the meaning of Section 27A
of the Securities Act and Section 21E of the Exchange Act. Such  forward-looking
statements,   which  are  often   identified   by  words  such  as   "believes",
"anticipates",  "expects",  "estimates",  "should", "may", "will", and "similar"
expressions,  represent the Company's  expectations or beliefs concerning future
events. Numerous assumptions, risks and uncertainties, including the factors set
forth below,  could cause actual results to differ  materially  from the results
discussed  in the forward  looking  statements.  Prospective  purchasers  of the
Shares  should  carefully  consider the factors set forth below,  as well as the
other information  contained herein or in the documents  incorporated  herein by
reference.

                              CERTAIN RISK FACTORS

     1. Recent History of Losses. The Company incurred net losses of $1,999,000,
$4,084,000, and $631,000 for the years ended April 30, 1994, 1995 and 1996 and a
net loss of  $675,000  for the nine (9) months  ending  February  1, 1997.  Such
losses are primarily attributable to sales levels insufficient to meet the costs
associated  with the  development  and  marketing of new products in an emerging
technology.  Sales  levels  have been  negatively  impacted by delays in product
development,  delays on the part of the  carriers to offer frame relay  services
and once offered,  incorrect carrier pricing for frame relay services.  In order
to address  these  factors,  the Company has taken  various  steps.  The Company
actively  participates  in  industry  forums  that  promote  frame relay and ATM
services.  Further,  the Company  upgraded and expanded it sales,  marketing and
engineering  organizations,  while  decreasing  its general  and  administrative
overhead.  The Company is focused on acquisitions  and partnership  arrangements
intended  to expand its  technology  base and  increase  sales.  There can be no
assurance that the Company will generate sufficient revenues to meet expenses or
to operate profitably in the future.

     2. Historical  Financial Statement  Adjustments.  During the fourth quarter
ended April 30, 1995, the Company  increased its allowance for doubtful accounts
by $200,000 ($0.02 per share) to take account of products  returned and credited
to  customers  in the  fourth  quarter as well as to  provide  for future  sales
returns and  allowances.  The Company also  increased  its reserve for inventory
obsolescence  in the fourth quarter by $295,000  ($0.04 per share)  primarily to
take account of certain slow moving data compression and analog modem inventory.

     During the fourth quarter ended April 30, 1994, the Company reversed a sale
in the amount of $580,000  which was  originally  recorded in the third  quarter
ended  February  5,  1994.  The  reversal  of the sale was  made  after  certain
technical  difficulties  arose in the fourth  quarter  regarding the project for
which the Company's  product was intended.  These matters were not identified to
management  at the time of sale.  The effect on third  quarter  and fiscal  1994
operating  results  of the  reversal  of the  sale was to  increase  net loss by
approximately  $295,000,  and to increase  the per share net loss by ($0.04) per
share.

     Also during the fiscal  1994 fourth  quarter,  the  Company  increased  its
allowance for doubtful  accounts for products returned and credited to customers
in the fourth  quarter as well as to provide for  potential  future  returns and
allowances. The increase in the allowance includes $220,000 which management now
believed was  attributable to matters which existed at the end of third quarter.
The effect on third quarter and fiscal 1994 and operating  results of increasing
the allowance for doubtful  accounts by $220,000 was to increase the net loss by
$220,000 and to increase the net loss per share by ($0.03).

     The Company restated its 1993 financial  statements to reflect  corrections
to the accounts  payable,  costs of goods sold and  additional  paid-in  capital
accounts,  in connection  with the re-audit of the 1993 financial  statements by
the Company's  accountants  BDO Seidman LLP. With respect to the 1993  financial
statements,  the  restatement  reduced the pre-tax  income and the net income by
$90,000 ($0.01 per share). The restatement had no effect on total  stockholders'
equity as originally reported.

     3. Pending SEC  Investigation.  The United States  Securities  and Exchange
Commission ("SEC") is currently  conducting a confidential inquiry pursuant to a
formal order directing a private investigation. This inquiry, which commenced in
September,  1994 and has focused on certain accounting,  end of quarter, revenue
recognition,  and internal  controls  issues,  is confidential and should not be
construed as an  indication  by the SEC or the staff that any  violations of law
have occurred. The Company is cooperating fully with the SEC staff. No assurance
can be given  concerning the outcome of this  investigation  or that the inquiry
will be resolved in the near future.

     4.   Fluctuations  in  Quarterly   Operating   Results.   The  Company  has
historically  experienced  substantial  quarterly  fluctuation  in its operating
results.  Due to changes to software and the  relatively  high revenues per unit
sold,   production  or  shipping  delays  or  customer  order  rescheduling  can
significantly  affect  quarterly  revenues  and  profitability.  The Company has
experienced and may again experience quarters during which a substantial portion
of  the  Company's  net  sales  are  realized  near  the  end  of  the  quarter.
Accordingly,  delays in shipments near the end of a quarter can cause  quarterly
net sales to fall significantly short of anticipated  levels.  Since most of the
Company's  expenses are fixed in the short term,  such  shortfalls  in net sales
could have a material  adverse  effect on the Company's  business and results of
operations.  The  Company's  operating  results  may also vary from  quarter  to
quarter  based  upon  numerous  factors  including  the  timing  of new  product
introductions,  product  mix,  levels  of sales,  proportions  of  domestic  and
international  sales  activities  of  competitors,  acquisitions,  international
events and problems in obtaining  adequate  materials or  components on a timely
basis.


                                        3

<PAGE>

     5. Competition.  The data communications industry is intensely competitive.
The Company currently  competes  principally in the markets for high-speed voice
and data frame relay  products.  Many of the  Company's  existing and  potential
competitors  (including  certain of the company's  customers and suppliers) have
far more extensive financial,  engineering,  product development,  manufacturing
and marketing  resources than the Company.  The Company's  products and services
compete on the basis of a number of factors, including, in the case of the frame
relay business,  time to market and delivery risk, price, quality,  features and
functions,  power consumption,  and manufacturing rights, and recommendations of
the systems integrators, modularity and expendability,  reliability, service and
support,  supplier  credibility,  and  price.  There  can be no  assurance  that
competitors will not introduce products incorporating  technology as advanced or
more  advanced  than  the  Company's  or  that  changes  in  the  communications
environment will not render competitors product solutions more attractive to the
customer than the Company's solutions.  Competitive  pressures often necessitate
price  reductions  which the  Company  may not be able to achieve or which could
adversely affect profit margins which can adversely affect operating results. As
a result,  these  competitors  may be able to  respond  more  quickly  to new or
emerging technologies and changes in customer requirements, or to devote greater
resources to the development,  promotion and sale of their products and services
than  the  Company.  In  addition,   current  and  potential   competitors  have
established or may establish cooperative  relationships among themselves or with
third  parties  to address  the needs of the  Company's  prospective  customers.
Accordingly,  it is possible that new competitors or alliances among competitors
may  emerge  and  rapidly  acquire  significant  market  share.  There can be no
assurance that the Company will be able to compete successfully with existing or
new  competitors or that  competitive  pressures  faced by the Company would not
materially  and  adversely  affect  its  business,  results  of  operations,  or
financial condition.

     6. Rapid  Technological  Change.  The market for the Company's  products is
characterized  by rapidly  changing  technology,  emerging  industry  standards,
product  proliferation and short product life cycles.  The Company believes that
its future success will depend upon its ability to enhance its existing products
and to develop and introduce new products  which conform to or support  emerging
data  communications  standards,  meet a wide range of  evolving  user needs and
achieve  market  acceptance.  There can be no  assurance  that the Company  will
succeed in developing  and  marketing  such products or that the Company will be
able  to  respond  effectively  to  technological  changes,   emerging  industry
standards or new product introductions by others.  Furthermore,  there can be no
assurance that competitors will not introduce products incorporating  technology
as advanced or more advanced than the Company's  thereby rendering the Company's
products or technologies  uncompetitive or obsolete.  Any significant  delays in
developing  or shipping  new or enhanced  products  could  adversely  affect the
Company's  operating  results.   Conversely,   the  growth  of  the  market  for
communications  products  has been  driven  in part by the  rapid  technological
change  experienced  by that market.  There can be no assurance  that such rapid
technological change will continue or that the telecommunications infrastructure
will support such  products.  Any of these  factors could  materially  adversely
affect the market for data  communications  products and the Company's operating
results.


     7. Changes to Protocols and Changing Technology.  New Data Protocols may be
developed  that could  displace  the  protocols  currently  supported in Company
products,  requiring additional software development to sustain the viability of
those  products.  An  announcement  of such new protocols  could have a negative
effect on sales of older designs,  as users hesitate to install  equipment based
on  existing  designs  until they had  evaluated  the new ones.  There can be no
assurance that the Company would have the necessary resources,  particularly the
knowledgeable  employees,  to implement new protocols in a timely  manner.  Such
failure to  develop  adequate  products  in  response  to new  technology  could
adversely affect the Company's  profitability.  Asynchronous Transfer Mode (ATM)
is a new technology for transmitting  digital  information,  including voice and
data, over a public or private network.  Telephone companies and other operators
of public  network are  deploying  ATM in their  backbone  segments.  If the ATM
technology becomes much less expensive,  ATM services could become  economically
more  attractive  than frame relay  services that  currently are involved in the
bulk of  Company's  business.  If ATM were to become  more  popular  that  frame
replay,  the Company would need to develop new products,  retrain its employees,
and  educate  its  sales  and  distribution  channel  partners.  There can be no
assurance  that  the  Company  will  have the  resources  necessary  to  develop
appropriate products in a timely manner.

     8. Introduction of New Products.  The Company's future revenue is dependent
on its ability to successfully develop, manufacture and market products. In this
regard,  future  growth is  dependent  on the  Company's  ability  to timely and
successfully  develop and  introduce new  products,  establish new  distribution
channels, develop affiliations with leading market participants which facilitate
product development and distribution,  and market existing and new products with
service providers,  resellers, channel partners, and others. The introduction of
new or enhanced  products  requires  the Company to manage the  transition  from
older products in order to minimize  disruption in customer  ordering  patterns,
avoid  excessive  levels of older product  inventories  and ensure that adequate
supplies of new products can be delivered to meet customer demand.  In addition,
as  the  technical   complexity  of  new  products  increases,   it  may  become
increasingly  difficult  to  introduce  new  products  quickly and  according to
schedule.  There can be no assurance that the Company will  successfully  manage
the  transition to new products or that the Company's  research and  development
efforts will result in  commercially  successful  new technology and products in
the future.

     9.  Future  Capital  Requirements.  The  Company's  ability to make  future
capital  expenditures  and fund the development and launch of new products,  are
dependent on existing cash and some or all of the following:  demands on cash to
support  inventory  for the  frame  relay,  demands  on cash  arising  from  the
redemption (if required) of the Debentures or Preferred Stock, and the Company's
return to  profitability.  The timing and amount of the Company's future capital
requirements  can not be  accurately  predicted,  nor can there be any assurance
that debt or equity financing, if required, can be obtained on acceptable terms.
There can be no  assurance  that the  company  will have cash  available  in the
amounts and at the times needed.

     10.  Dependence on Key  Employees.  The Company's  ability to implement its
strategies  depends  upon its ability to retain and  continue to attract  highly
talented managerial and technical personnel. The Company is especially dependent
on its key technical  personnel to remain in the forefront of technology  and on
its sales  executives  to develop and  implement  the sales  strategies  for its
products.   Competition   for  qualified   personnel  is  intense  in  the  data
communications  industry. Most of the Company's senior executives,  are employed
on an "at-will"  basis.  There can be no assurance  that the Company will retain
its  key  managerial  and  technical  employees  or that  it  will  attract  and
assimilate,  such  employees  in the  future  . The  loss of key  management  or
technical   personnel  could  materially  and  adversely  affect  the  Company's
business, results of operations and financial condition.

     11.  Inventory  Management.  From time to time, the Company has experienced
significant  increases in its levels of  inventory  in order to meet  production
requirements  of  existing or  anticipated  orders or as the result of delays in
receiving certain components,  such as critical chipsets, from suppliers and the
concurrent accumulation of other inventory.  Increased levels of inventory could
adversely  affect  the  Company's  liquidity,  increase  the  risk of  inventory
obsolescence (from cancellation of orders, failure to receive anticipated orders
or  otherwise),  or  increase  the risk of a  decline  in  market  value of such
inventory or losses from theft, fire or other similar  occurrences.  The failure
of the Company to effectively  manage its inventory levels could have a material
adverse affect on the Company's financial condition and results of operations.


                                        4

<PAGE>

     12.  Intellectual  Property Rights.  The Company's  success depends in part
upon its technological  expertise and proprietary  product designs.  The Company
relies upon its trade secret  protection  efforts and, to a lesser extent,  upon
patents and copyrights to protect its proprietary technologies.  There can be no
assurance  that  these  steps  will be  adequate  to deter  misappropriation  or
infringement of its proprietary  technologies or that the Company's  competitors
will not independently develop technologies that are substantially equivalent or
superior to the  Company's  technology.  In  addition,  the laws of some foreign
countries do not protect the Company's  proprietary rights to the same extent as
do the  laws of the  United  States.  Further,  given  the  rapid  evolution  of
technology  and  uncertainties  in  intellectual  property law,  there can be no
assurance that the Company's  current or future  products will not be determined
to infringe proprietary rights of others.  Should the Company be sued for patent
infringement,  there can be no assurance  that the Company will prevail,  or, if
required  by such  litigation,  that it will  be able to  obtain  the  requisite
licenses or rights to use such technology on commercially  reasonable  terms. In
addition, any litigation, regardless of the outcome, could result in substantial
costs to the Company.

     13. Regulatory Standards.  The Company's products are subject to regulation
by the Federal Communications  Commission (the "FCC"), and each of the Company's
products must  typically be tested before it can be introduced  into the market.
Any inability of the  Company's  products to conform to FCC  regulations  or any
failure of the Company's  products to meet FCC testing  requirements could delay
the introduction of the Company's products into the market, impact the Company's
relationships with its OEMs and otherwise adversely affect the Company.  Foreign
authorities often establish telecommunications standards different from those in
the United  States,  making it difficult and more  time-consuming  to obtain the
required  regulatory   approvals.   Any  significant  delay  in  obtaining  such
regulatory  approvals  could have an adverse  effect on the Company's  operating
results.   Furthermore,   changes  in  such  laws,   regulations,   policies  or
requirements could affect the demand for the Company's products or result in the
need to modify products,  which may involve substantial costs or delays in sales
and could have an adverse effect on the Company's future operating results.

     14.  Potential  Redemption of Debentures  or Preferred  Stock.  Pursuant to
regulations of the National Association of Securities Dealers, in the absence of
shareholder  approval,  the Company may not issue,  in the aggregate,  more than
2,016,261 shares of Common Stock upon conversion of the Debentures (or Preferred
Stock) and the exercise of the  Warrants.  The actual number of shares of Common
Stock to be issued upon  conversion of the Debentures (or Preferred  Stock) will
depend on the average closing price of the Common Stock prior to conversion. The
Company is obligated  to redeem any shares of  Preferred  Stock which may not be
converted  and any  Warrants  which  may not be  exercised  as a result  of such
regulatory limitation.  The cash demands to fund such a redemption may adversely
affect the Company's  ability to make future capital  expenditures  and fund the
development and launch of new products.  Furthermore,  there can be no assurance
that the Company will have cash available to fund such a redemption. See "Future
Capital Requirements".

     15. Potential Dilution;  Shares Eligible for Future Sales;  Possible Effect
on Additional Equity Financing.  A substantial  number of shares of Common Stock
are or will be  issuable  by the  Company  upon the  conversion  of  convertible
Debentures  (or Preferred  Stock) and the exercise of Warrants which the Company
has  issued,  which  could  result in  dilution  to a  shareholder's  percentage
ownership interest in the Company and could adversely affect the market price of
the Common Stock.  Under the  applicable  conversion  formulas of the Debentures
(and  Preferred  Stock),  the  number of shares of Common  Stock  issuable  upon
conversion is inversely  proportional to the market price of the Common Stock at
the time of conversion (i.e., the number of shares increases as the market price
of the Common Stock  decreases):  and except with respect to certain  redemption
rights of the Company for the Debentures (or Preferred  Stock),  there is no cap
on the number of shares of Common Stock which may be issued.  In  addition,  the
number of shares  issuable upon the  conversion of the  Debentures (or Preferred
Stock) and the exercise of Warrants is subject to adjustment upon the occurrence
of certain dilutive events after October 9, 1997.

     On April 15, 1997,  there were issued and outstanding a total of 10,081,307
shares of Common Stock. If all convertible  Debentures (or Preferred  Stock) and
Warrants Issuable  Conversion which the Company has issued were deemed converted
and exercised, as the case may be, as of April 15, 1997, there would be issuable
1,160,622 shares of Common Stock. Upon such conversion and exercise, there would
be  outstanding  11,241,929  shares  of Common  Stock.  Of  these,  the  Company
currently has  registered  for resale  3,000,000  shares  (including  the Shares
offered hereby).  The sale or availability  for sale of a significant  number of
shares of Common Stock in the public  market could  adversely  affect the market
price  of  the  Common  Stock.  In  addition,  certain  holders  of  outstanding
securities of the Company have rights to approve  and/or  participate in certain
types of future equity financing by the Company. The availability to the Company
of additional  equity  financing,  and the terms of any such  financing,  may be
adversely affected by the foregoing.

     16.  Price  Volatility  and Absence of  Dividends.  The market price of the
Company's  Common Stock has been, and may continue to be, highly  volatile.  The
Company  believes  that  factors such as  quarterly  fluctuations  in results of
operations,   adverse   circumstances   affecting  the  introduction  or  market
acceptance of new products offered by the Company, announcements of new products
by competitors, changes in earnings estimates by analysts, changes in accounting
principles, sales by existing shareholders (including sales from time to time by
the Selling Shareholders), loss of key personnel and other factors will continue
to  cause  the  market  price  of  the  Company's   Common  Stock  to  fluctuate
substantially.   In  addition,  stock  prices  for  many  technology  companies,
including  the  Company,  fluctuate  widely  for other  reasons  (such as market
perception of high technology  industries) unrelated to operating results. These
fluctuations as well as general economic,  political and market conditions, such
as recessions or military  conflicts,  may adversely  affect the market price of
the Company's  Common Stock.  Changes in the price of the Company's Common Stock
could affect the Company's ability to successfully  attract and retain qualified
personnel or complete other  transactions  in the future.  The Company has never
paid any cash dividends on its capital  stock,  and has no plans to do so in the
future.


                                        5

<PAGE>

                                   THE COMPANY

The  Company  participates  in the  communications  networking  industry,  which
divides logically into two major areas:

     1.   Backbone  systems and  components:  consisting  of large  switches and
          multiplexers,  connected  to each  other by Wide  Area  Network  (WAN)
          transmission lines. Public networks put backbone components in Central
          Offices.  Private networks place them at headquarters,  major regional
          centers, and the larger branch locations.

     2.   Access  devices:  this  equipment  is  physically  smaller,  typically
          located  in remote  customer  offices  and  attached  to the  backbone
          network through a single or multiple telephone lines. An access device
          may be part of a local area network  (LAN) within a building or campus
          and/or   facilitate   connection   among  and   between  LAN  and  WAN
          environments.

FastComm  designs,  manufactures,  markets,  and sells access devices that allow
computer  users to connect to public and  private  networks  based on analog and
digital transmission.  Its products include a range of devices aimed at the fast
packet  services as well as digital  leased-lines,  switched 56 networks  and ID
route networks (including the Internet). The Company's access devices allow many
types of terminal equipment and computers to access these services.  The Company
does not make backbone network components or systems, but is focused on the much
simpler access  devices.  The market  potential (in units) is greater for access
products  because  there  are so many  small  offices  and  businesses  that are
increasingly able to justify a digital connection.

     The Company's  current  business is primarily  based on access  devices for
frame relay services.  Other access products offered include models designed for
cell relay or ATM services (a LAN  bridge),  analog  phone lines  (modems),  and
leased or switched  digital data  services  (CSU/DSUs  for DDS).  FastComm  also
offers a family of  moderate  to very high  speed  data  compressors  to enhance
access to digital services.

     The Company manufactures some of its products at its headquarters  location
in Sterling, Virginia. It also resells products manufactured by others under its
label. The Company  subcontracts the manufacturing of its printed circuit boards
to various  outside,  unrelated  contractors and performs the final assembly and
testing at its headquarters.

     The Company  maintains  its  principal  executive  offices at 45472 Holiday
Drive, Sterling, Virginia 20166 and its telephone number is (703) 318- 7750.

                                 USE OF PROCEEDS

     The  Company  will not receive  any  proceeds  form the sale of the Offered
Shares by the Selling  Shareholders.  The Company  will use the  proceeds of any
exercise of the  Warrants  for cash for general  corporate  purposes and working
capital.

                              SELLING SHAREHOLDERS

     The following table sets forth the names of the Selling  Shareholders,  the
number of Common Shares  beneficially  owned by such Selling  Shareholder  as of
April 15,  1997 and the number of Offered  Shares  which may be offered for sale
pursuant  to this  Prospectus  by each  such  Selling  Shareholder.  None of the
Selling  Shareholders  has  held  any  position,   offices,  or  other  material
relationship  with the  Company or any of its  affiliates  within the past three
years  other  than as a result of his or its  ownership  of Common  Shares.  The
Offered  Shares may be  offered  from time to time by the  Selling  Shareholders
named below.  However, such Selling Shareholders are under no obligation to sell
all or any portion of such  Offered  Shares,  nor are the  Selling  Shareholders
obligated to sell any such Offered Shares immediately under this Prospectus. All
information  with respect to share  ownership has been  furnished by the Selling
Shareholders. Because Selling Shareholders may sell all or part of their Offered
Shares,  no estimate can be given as to the number of Common Shares that will be
held by any Selling Shareholder upon termination of any offering made hereby.

     Pursuant to Rule 416 of the Securities Act, Selling  Shareholders many also
offer and sell Common Shares issued with respect to the Debentures (or Preferred
Stock)  and the  Warrants  as a result  of stock  splits,  stock  dividends  and
anti-dilution provisions (including by reason of changes in the conversion price
of the Debentures and Preferred Stock in accordance with the terms thereof)


                                        6

<PAGE>

<TABLE>
<CAPTION>
                                                                                                        Common Shares
                                       Number of Common                                              Owned After Offering(2)
                                   Beneficially Shares Owned                                                    Percentage of
Name of Selling Shareholder          Prior to Offering(1)        Common Shares Offered Hereby     Number         Outstanding
- ---------------------------         ----------------------       ----------------------------     ------         -----------
<S>                                      <C>                               <C>                     <C>              <C>
Capital Ventures International(2)        1,800,000(3)                      1,800,000               - 0 -            - 0 -

Nelson Partners(2)(4)                      300,000(3)                        300,000(3)            - 0 -            - 0 -

Olympus Securities, Ltd.(2)(4)             300,000(3)                        300,000(3)            - 0 -            - 0 -

CC Investments, LDC.(2)                    600,000(3)                        600,000               - 0 -            - 0 -

Richard L. Apel                            190,551(5)                        190,551               - 0 -            - 0 -

</TABLE>

(1)  Assumes the sale of all Offered Shares.

     (2) Pursuant to the  Securities  Purchase  Agreement,  dated April 9, 1997,
among the Company and Capital Ventures International,  Nelson Partners,  Olympus
Securities,  Ltd., CC Investments,  LDC.  (collectively,  the "Investors"),  the
Investors  purchased an aggregate of $5,000,000  principal amount of Debentures,
which are  convertible  upon  approval  of the Company  Stockholders  into 5,000
shares of Preferred  Stock.  The Debentures  (or shares of Preferred  Stock) are
convertible into Shares of Common Stock and Warrants (the "Warrants") to acquire
a number of shares of Common  Stock  equal to up to forty  percent  (40%) of the
number of shares of Common Stock issuable upon  conversion of each Debenture and
share of Preferred Stock.

(3)  Represents the pro rata allocation  among the Investors of 3,000,000 Shares
     which the Company is  registering  hereunder  pursuant to the  registration
     rights  agreement  attached  as Exhibit 4.3  hereto.  The actual  number of
     Common Shares issuable upon  conversion of the  Convertible  Debentures (or
     Preferred Stock) will equal (in addition to the Common Shares issuable upon
     exercise  of the  Warrants),  (i) the  aggregate  principal  amount  of the
     Debentures  or stated  value of the  shares of  Preferred  Stock then being
     converted (plus a premium in the amount of 5% per annum accruing from April
     9, 1997,  through the date of conversion (unless the Company chooses to pay
     such premium in cash),  plus any  Conversion  Default Amount (as defined in
     the Debentures and the Certificate of  Designations  Preferences and Rights
     of the Preferred Stock), divided by (ii) (x) if the conversion occurs on or
     before  October 6, 1997,  a conversion  price equal to a percentage  of the
     average  closing  price of the shares of Common  Stock  during a  specified
     trading period immediately prior to conversion (as determined in accordance
     with the Debentures or Certificate of Designations Preference and Rights of
     the Preferred Stock), or (y) in the case of conversions on or after October
     6, 1997,  a  conversion  price  equal to the lower of a  percentage  of the
     average  closing  price of the Common  Shares  during a  specified  trading
     period immediately prior to conversion, and $7.54 (subject to adjustment in
     accordance with the Debentures or Certificate of  Designations  Preferences
     and Rights of the Preferred  Stock).  Upon  conversion of the Debentures or
     Preferred  Stock into  shares of Common  Stock,  each holder  thereof  will
     receive  warrants to acquire a number of shares of Common Stock equal to up
     to forty  percent  (40%) of the number of shares of Common  Stock  issuable
     upon conversion of each Debenture or share of Preferred Stock. The Warrants
     entitle the Holder  thereof to acquire  shares of Common  Stock an exercise
     price of 125% of the market  price,  as defined in the Warrants on the date
     of issuance of the Warrants. For a complete description of the terms of the
     Debentures,  see  Exhibit  4.4  hereto.For  a complete  description  of the
     relative rights,  preferences,  privileges,  powers and restrictions of the
     Preferred  Stock,  see the  Certificate of  Designations,  Preferences  and
     rights of Series A Convertible  Preferred Stock of FastComm  Communications
     Corporation attached as Exhibit 4.6 hereto. For complete description of the
     terms of the  Warrants,  see the Form of Warrant  attached  as Exhibit  4.5
     hereto.

     Except under certain limited circumstances,  no holder of the Debentures or
     Preferred  Stock and  Warrants  is  entitled  to convert or  exercise  such
     securities to the extent that the shares to be received by such holder upon
     such  conversion or exercise  would cause such holder to  beneficially  own
     more than 4.9% of the outstanding  shares of Common Stock.  Therefore,  the
     number of Shares set forth herein and which a Selling  Shareholder may sell
     pursuant to this  Prospectus  may exceed the number of Shares such  Selling
     Shareholders  would otherwise  beneficially  own as determined  pursuant to
     Section 13(d) of the Exchange Act. Moreover, pursuant to the regulations of
     the  National   Association  of  Securities  Dealers,  in  the  absence  of
     shareholder  approval,  the  aggregate  number of  shares  of Common  Stock
     issuable to the Selling  Shareholders  at a discount from market price upon
     conversion  of the  Debentures  or  Preferred  Stock  and  exercise  of the
     Warrants  which  have been and may be issued  to the  Selling  Shareholders
     pursuant to the Securities Purchase Agreements may not exceed 19.99% of the
     outstanding Common Shares on April 9, 1997 (i.e., 2,016,261 shares). Unless
     shareholder  approval is obtained  to issue  shares of Common  Stock to the
     Investors  in excess of the  maximum  amount set forth  above,  none of the
     Selling   Shareholders   will  be  entitled   to  acquire   more  than  its
     proportionate  share of such maximum  amount.  Any  Debentures or Preferred
     Stock  which  may  not be  converted  and  any  Warrants  which  may not be
     exercised because of such limitation must be redeemed by the Company.

(4)  Citadel  Limited  Partnership  is the  managing  general  partner of Nelson
     Partners  ("Nelson") and the trading  manager of Olympus  Securities,  Ltd.
     ("Olympus") and consequently  has voting control and investment  discretion
     over securities held by both Nelson and Olympus. The ownership  information
     for Nelson does not include the shares  owned by Olympus and the  ownership
     information for Olympus does not include the shares owned by Nelson.

(5)  Includes  105,520  shares of Stock issued to Richard L. Apel at Closing and
     an   additional   26,380  Shares   issuable  in  accordance   with  certain
     post-closing  adjustments;  also includes an additional 58,651, issuable to
     Mr. Apel in the future if Net Revenue of Comstat Communications Corporation
     exceeds a certain  threshold amount  ("Adjustment  Shares").  The number of
     Adjustment  Shares, if earned, is subject to further adjustment up or down,
     if the average  closing bid price for shares of the Company's  Common Stock
     is greater or less than $6.82 for the five (5) business days proceeding the
     applicable Adjustment Date.


                                        7

<PAGE>

                              PLAN OF DISTRIBUTION

     The Offered Shares are being offered on behalf of the Selling Shareholders,
and,  except for the cash exercise  price of the Warrants,  the Company will not
receive  any  proceeds  from the  Offering.  The  Offered  Shares may be sold or
distributed  from  time to time by the  Selling  Shareholders,  or by  pledgees,
donees or  transferees  of, or other  successors  in  interest  to, the  Selling
Shareholders, directly to one or more purchasers (including pledgees) or through
brokers,  dealers or  underwriters  who may act solely as agents or may  acquire
Offered Shares as principals,  at market prices  prevailing at the time of sale,
at prices related to such prevailing market prices, at negotiated  prices, or at
fixed prices,  which may be changed.  The distribution of the Offered Shares may
be effected  in one or more of the  following  methods:  (i)  ordinary  brokers'
transactions,  which may include long or short sales (ii) transactions involving
cross  or block  trades  or  otherwise  on the  NASDAQ  National  Market;  (iii)
purchases by brokers,  dealers or  underwriters  as principal and resale by such
purchasers  for their own  account  pursuant  to this  Prospectus;  (iv) "at the
market " to or through  market makers or into an existing  market for the Common
Shares;  (v) in other ways not involving  market makers or  established  trading
markets,  including direct sales to purchasers or sales effected through agents;
(vi)  through  transactions  in  options,  swaps or other  derivatives  (whether
exchange-listed or otherwise),  or (vii) any combination of the foregoing, or by
any other legally  available  means.  In addition,  the Selling  Shareholders or
their   successors  in  interest  may  enter  into  hedging   transaction   with
broker-dealers  who may engage in short sales of Offered Shares in the course of
hedging the  positions  they assume with the Selling  Shareholders.  The Selling
Shareholders or their successors in interest may also enter into option or other
transactions   with   broker-dealers   that   require   the   delivery  by  such
broker-dealers  of the  Offered  Shares,  which  Offered  Shares  may be  resold
thereafter pursuant to this Prospectus.

     Brokers, dealers,  underwriters or agents participating in the distribution
of the  Offered  Shares  as  agents  may  receive  compensation  in the  form of
commissions,  discounts  of  concessions  from the Selling  Shareholders  and/or
purchasers of the Offered Shares for whom such  broker-dealers may act as agent,
or to whom  they may sell as  principal,  or both  (which  compensation  as to a
particular   broker-dealer   may  be  less  than  or  in  excess  of   customary
commissions).  The  Selling  Shareholders  and  any  broker-dealers  who  act in
connection  with  the sale of  Offered  Shares  hereunder  may be  deemed  to be
"Underwriters"  within the meaning of the  Securities  Act, and any  commissions
they  receive  and  proceeds  of any sale of Offered  Shares may be deemed to be
underwriting  discounts and commissions  under the Securities  Act.  Neither the
Company nor any Selling  Shareholder  can presently  estimate the amount of such
compensation.  The Company knows of no existing arrangements between any Selling
Shareholder any other shareholder, broker, dealer, underwriter or agent relating
to the sale of distribution of the Offered Shares.

     The Company  will pay  substantially  all of the  expenses  incident to the
registration,  offering and sale of the Offered  Shares to the public other than
commissions or discounts of underwriters,  broker-dealers or agents. The Company
has also agreed to  indemnify  certain of the Selling  Shareholders  and certain
related persons against certain  liabilities,  including  liabilities  under the
Securities Act.

                                  LEGAL MATTERS

     The validity of the shares of Common Stock  offered  hereby is being passed
upon by Amon & Sabatini, New York, New York, counsel to the Company.

                                     EXPERTS

     The financial  statements  and  supplemental  schedules of the Company have
been  audited by BDO  Seidman  LLP,  Independent  Accountants,  whose  report is
incorporated  herein by reference from the Company's Annual Report on Form 10-K.
These financial statements and supplemental  schedule are incorporated herein by
reference  in reliance  upon the reports of such  independent  certified  public
accountants given upon their authority as experts in accounting and auditing.


                                        8

<PAGE>

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution.

     The  following  table  sets forth the  expenses  (other  than  underwriting
discounts  and  commissions),  which  other  than the SEC  registration  fee are
estimates,  payable by the Company in connection with the sale and  distribution
of the Shares registered hereby.

SEC registration fee........................................    $ 5,801.00

Blue Sky fees and expenses (including legal fees)...........    $ 1,000.00*

Legal fees and expenses.....................................    $ 5,000.00*

Accounting fees and expenses................................    $ 1,500.00*

Printing expenses...........................................    $ 1,000.00*

Miscellaneous...............................................    $   699.00*
                                                                ==========

Total.......................................................    $15,000.00*

- ----------
*   Estimated

Item 15. Indemnification of Directors and Officers.

     Article Six of the By-Laws, as amended, of the Company empowers the Company
to indemnify current or former directors,  officers,  employees or agents of the
Company or persons  serving by request of the Company in such  capacities in any
other  enterprise  or persons  who have  served by the request of the Company in
such capacities in any other enterprise to the full extent permitted by the laws
of the Commonwealth of Virginia.

     Article Tenth of the Virginia  Stock  Corporation  Act contains  provisions
authorizing indemnification by the Company of directors,  officers, employees or
agents  against  certain  liabilities  and  expenses  which  they  may  incur as
directors,  officers,  employees  or agents of the  Company or of certain  other
entities. Section 13.1 - 699 also provides that such indemnification may include
payment by the  Company of expenses  incurred  in  defending a civil or criminal
action or  proceeding  in advance  of the final  disposition  of such  action or
proceeding  upon receipt of an  undertaking  by the person  indemnified to repay
such  payment  if  he  shall  be   ultimately   found  not  to  be  entitled  to
indemnification  under the Section.  Indemnification may be provided even though
the person to be indemnified is no longer a director, officer, employee or agent
of the  Company  or  such  other  entities.  Section  13.1 - 703  also  contains
provisions  authorizing  the Company to obtain  insurance  on behalf of any such
director,  officer  employee or agent  against  liabilities,  whether or not the
Company would have the power to indemnify such person  against such  liabilities
under the provisions of the Section. The Company currently maintains a policy of
insurance  under which the  directors  and  officers of the Company are insured,
within the limits and subject to the exclusions  and  limitations of the policy,
against  certain  expenses in connection  with the defense of actions,  suits or
proceedings,  to which they are  parties by reason of being or having  been such
directors or officers.

     The  indemnification  and  advancement  of  expenses  provided  pursuant to
Section 13.1 - 699 are not  exclusive,  and subject to certain  conditions,  the
Company may make other or further  indemnification or advancement of expenses of
any of its  directors,  officers,  employees or agents.  Because the Articles of
Incorporation,   as  amended,   of  the  Company  do  not   otherwise   provide,
notwithstanding  the  failure  of the  Company to  provide  indemnification  and
despite a contrary  determination  by the Board of Directors or its shareholders
in a specific case, a director, officer, employee or agent of the Company who is
or was a party to a proceeding  may apply to a court of  competent  jurisdiction
for  indemnification or advancement of expenses or both, and the court may order
indemnification  and  advancement of expenses,  including  expenses  incurred in
seeking   court-ordered   indemnification  or  advancement  of  expenses  if  it
determines that the petitioner is entitled to mandatory indemnification pursuant
to Section 13.1 - 698 because he has been  successful on the merits,  or because
the Company has the power to  indemnify  on a  discretionary  basis  pursuant to
Section 13.1 - 699 or because the court determines that the petitioner is fairly
and reasonably  entitled  indemnification  or advancement of expenses or both in
view of all the relevant circumstances.

     Section 13.1692.1 of the Act provides that the damages assessed against any
officer or director arising out of a single transaction, occurrence or course of
conduct shall not exceed the lesser of (1) the monetary amount  specified in the
Articles of  Incorporation;  or (2) the greater of (i) $100,000 or the amount of
cash  compensation  received by the officer or director from the corporation for
the twelve  (12) months  immediately  proceeding  the act or omission  for which
liability  was  imposed.  The  liability  of an officer or  director  engaged in
willful  misconduct or a knowing  violation of criminal law or of any federal or
state  securities law including  without limit of any claim of unlawful  insider
trading or  manipulation  of the market for any  security is not covered by such
provision.

     The  Agreement  between the Company and the Selling  Stockholders  provides
that  the  Selling  Stockholders  and,  under  certain  circumstances,   persons
participating  as underwriters in the offering or sale of the Common Stock being
registered  will  indemnify  and hold  harmless  the Company and each  director,
officer


                                        9

<PAGE>

and controlling  person of the Company with respect to any statement or omission
in the Registration  Statement or the Prospectus based upon written  information
furnished  to the  Company by or on behalf of the Selling  Stockholders  or such
underwriters, as the case may be, for inclusion therein.

Item 16. Exhibits

         (a)  Exhibits:

3.1      Restated Articles of Incorporation of the Company (1)

3.2      By-Laws of the Company, as amended (1)

4.1      Form of Securities  Purchase  Agreement between the Company and Capital
         Ventures, International, Nelson Partners, Olympus Securities, Ltd., and
         CC Investments, LDC. (2)

4.2      Registration Rights Agreement between the Company and Richard Apel (2)

4.3      Registration Rights Agreement between the Company and Capital Ventures,
         International,   Nelson  Partners  Olympus  Securities,  Ltd.,  and  CC
         Investments, LDC.

4.4      Form of Convertible Debenture (2)

4.5      Form of Warrant (2)

4.6      Proposed Form of Certificate of Designations, Preference and Rights (2)

5.1      Opinion of Amon & Sabatini (2)

23.1     Consent of BDO Seidman LLP, Independent Accountants (2)

23.2     Consent of Amon & Sabatini (included in Exhibit 5.1) (2)

24.1     Power of Attorney (included in Signature Page)

- ----------
     (1)  Previously filed as an Exhibit to the Company's Registration Statement
          on Form S-18, File no. 33-19785.

     (2)  Filed herewith.



Item 17. Undertakings.

A. The undersigned hereby undertakes:

     (1) To file,  during any period in which  offers or sales are being made, a
post-effective amendment to this Registration Statement;

          (i) to include  any  prospectus  required  by Section  10(a)(3) of the
          Securities Act of 1933;

          (ii) to reflect in the  prospectus  any facts or events  arising after
          the  effective  date of the  Registration  Statement  (or most  recent
          post-effective  amendment  thereof)  which,  individually  or  in  the
          aggregate, represent a fundamental change in the information set forth
          in the Registration Statement; and

          (iii) to include any material  information with respect to the plan of
          distribution not previously disclosed in the Registration Statement or
          any material change to such information in the Registration Statement;
          provided,  however,  that  paragraphs  A.(1)(i)  do not  apply  if the
          information  required to be included in a post-effective  amendment by
          those  paragraphs  is  contained  in  periodic  reports  filed  by the
          Registrant  pursuant to Section 13 or Section 15(d) of the  Securities
          Exchange  Act of  1934  that  are  incorporated  by  reference  in the
          Registration Statement.

     (2) that, for the purpose of determining any liability under the Securities
Act of 1933,  each  such  post-effective  amendment  shall be deemed to be a new
registration  statement  relating to the  securities  offered  therein,  and the
offering of such  securities  at that time shall be deemed to the  initial  bona
fide offering thereof.

     (3) to remove from registration by means of a post-effective  amendment any
of the securities being registered which remain unsold at the termination of the
offering.


                                       10

<PAGE>

B.  The  undersigned   registrant   hereby  undertakes  that,  for  purposes  of
determining  any liability  under the securities Act of 1933, each filing of the
registrant's  annual  report  pursuant to Section  13(a) or Section 15(d) of the
Securities  Exchange  Act of  1934  that is  incorporated  by  reference  in the
Registration  Statement  shall  be  deemed  to be a new  registration  statement
relating to the securities offered therein,  and the offering of such securities
at that time shall be deemed to be the initial bona fide offering thereof.

C. Insofar as indemnification  for liabilities  arising under the Securities Act
of 1933 may be permitted to directors,  officers and controlling  persons of the
Company pursuant to the foregoing provisions of otherwise,  the Company has been
advised  that in the opinion of the  Securities  and  Exchange  Commission  such
indemnification  is  against  public  policy  as  expressed  in the  Act and is,
therefore,  unenforceable. In the event that a claim for indemnification against
such  liabilities  (other than the payment by the Company of express incurred or
paid  by a  director,  officer  or  controlling  person  of the  Company  in the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
director,  officer or controlling person in connection with the securities being
registered,  the Company  will,  unless in the opinion of its counsel the matter
has been  settled by  controlling  precedent,  submit to a court of  appropriate
jurisdiction  the question whether such  indemnification  by it is against pubic
policy as expressed in the Act and will be governed by the final adjudication of
such issue.

                                   SIGNATURES

     Pursuant to the  requirements of the Securities Act of 1933, the registrant
certifies  that it has  reasonable  grounds to believe  that it meets all of the
requirements  for  filing  on Form S-3 and has  duly  caused  this  registration
statement  to be  signed  on its  behalf  by  the  undersigned,  thereunto  duly
authorized, in the Town of Sterling, Commonwealth of Virginia on April 30, 1997.



                           FASTCOMM COMMUNICATIONS CORPORATION

                           By:  /s/ PETER C. MADSEN
                                ---------------------------------------------
                                Peter C. Madsen, President, CEO and Director


                                POWER OF ATTORNEY

Pursuant to the  requirements of the Securities Act of 1933,  this  registration
statement has been signed by the following  persons in the capacities and on the
dates  indicated.  Each person whose  signature to this  Registration  Statement
appears below has appointed  each of Peter C. Madsen and Mark H. Rafferty as his
attorney-in-fact  to sign on his behalf  individually and in the capacity stated
below and to file all amendments and post-effective  amendments,  supplements to
this Registration  Statement,  and any and all instruments or documents filed as
part of or in connection  with this  Registration  Statement or any amendment or
supplement  thereto,  and any such  attorney-in-fact  may make such  changes and
additions  to this  Registration  Statement  as such  attorney-in-fact  may deem
necessary or appropriate.

        NAME                        TITLE                             DATE
        ----                        -----                             ----

/s/ Peter C. Madsen        Chairman of the Board; Chief          April 30, 1997
- ------------------------   Executive Officer and Director
Peter C. Madsen         

/s/ Mark H. Rafferty       Vice President; Principal Financial   April 30, 1997
- ------------------------   and Accounting Officer
Mark H. Rafferty        

/s/ Edward R. Olson        Director                              April 30, 1997
- ------------------------
Edward R. Olson

/s/ Thomas G. Amon         Director                              April 30, 1997
- ------------------------
Thomas G. Amon


                                        11



                          SECURITIES PURCHASE AGREEMENT

     SECURITIES  PURCHASE  AGREEMENT  (this  "Agreement"),  dated as of April 9,
1997, by and among FASTCOMM COMMUNICATIONS  CORPORATION, a Virginia corporation,
with headquarters located at 45472 Holiday Drive, Sterling,  Virginia 20166 (the
"Company"), and the purchaser or the purchasers (collectively, the "Purchasers")
set forth on the execution page(s) hereof.

     WHEREAS:

     A. The  Company  and each  Purchaser  are  executing  and  delivering  this
Agreement in reliance upon the exemption from securities  registration  afforded
by the provisions of Regulation D ("Regulation D"), as promulgated by the United
States  Securities and Exchange  Commission (the "SEC") under the Securities Act
of 1933, as amended (the "Securities Act");

     B. Each Purchaser desires to purchase, upon the terms and conditions stated
in this  Agreement,  (i)  convertible  debentures  of the  Company,  in the form
attached hereto as Exhibit A (the "Debentures"), convertible into (a) (x) shares
of the Company's common stock, par value $.01 per share (the "Common Stock") and
(y) warrants  (the  "Warrants"),  in the form  attached  hereto as Exhibit B, to
acquire  shares of Common Stock or (b) if  authorized  by the Board of Directors
and the shareholders of the Company, shares of a to-be-created class of Series A
preferred  stock of the Company (the "Preferred  Shares" and,  together with the
Debentures,  the  "Convertible  Securities"),   which  shall  have  the  rights,
preferences  and privileges  set forth in the  Certificate of Designation in the
form attached hereto as Exhibit F (the  "Certificate of Designation") or (ii) if
authorized  by the  Board of  Directors  and the  shareholders  of the  Company,
Preferred  Shares,  which Preferred Shares are convertible into shares of Common
Stock and Warrants, upon the terms and subject to the limitations and conditions
set forth in the Certificate of Designation. The shares of Common Stock issuable
upon  conversion  of or otherwise  pursuant to the  Convertible  Securities  are
referred to herein as the  "Conversion  Shares"  and the shares of Common  Stock
issuable upon exercise of or otherwise  pursuant to the Warrants are referred to
herein as the "Warrant  Shares." The  Debentures,  Preferred  Shares,  Warrants,
Conversion Shares and Warrant Shares are collectively  referred to herein as the
"Securities."

     C. Contemporaneous  with the execution and delivery of this Agreement,  the
parties hereto are executing and delivering a Registration Rights Agreement,  in
the form attached  hereto as Exhibit C (the  "Registration  Rights  Agreement"),
pursuant to which the Company has agreed to provide certain  registration rights
under the Securities Act and the rules and regulations  promulgated  thereunder,
and applicable state securities laws;

<PAGE>

     NOW, THEREFORE, the Company and the Purchasers hereby agree as follows:

1. PURCHASE AND SALE OF CONVERTIBLE SECURITIES

     a. Purchase of Convertible  Securities.  The issuance, sale and purchase of
the Convertible  Securities shall take place in two (2) separate  closings,  the
first of which is hereinafter  referred to as the "First Closing" and the second
of which is hereinafter  referred to as the "Second Closing." The purchase price
(the "Purchase  Price") per  Convertible  Security at each such closing shall be
equal to the  principal  amount  of such  Debenture  or the face  amount of such
Preferred Shares, whichever is applicable.

          (i) On the date of the First Closing,  subject to the satisfaction (or
waiver)  of the  conditions  set  forth in  Section 6 and  Section 7 below,  the
Company shall issue and sell to each Purchaser and each Purchaser shall purchase
from the Company,  60% of the  principal  amount of Debentures or face amount of
Preferred  Shares,  whichever is  applicable,  set forth on the  signature  page
hereto executed by such Purchaser.

          (ii) On the date of the Second  Closing,  subject to the  satisfaction
(or waiver) of the  conditions  set forth in Section 6 and Section 7 below,  the
Company shall issue and sell to each Purchaser and each Purchaser shall purchase
from the Company,  40% of the  principal  amount of Debentures or face amount of
Preferred  Shares,  whichever is  applicable,  set forth on the  signature  page
hereto executed by such Purchaser.

     b. Form of Payment.  At each of the First  Closing and the Second  Closing,
each  Purchaser  shall pay the  aggregate  Purchase  Price  for the  Convertible
Securities  being purchased by such Purchaser at such closing  hereunder by wire
transfer  to the  Company,  in  accordance  with the  Company's  written  wiring
instructions,  against delivery of the duly executed Debentures (or certificates
representing the Preferred  Shares) being purchased by such Purchaser  hereunder
and the Company shall deliver such Debentures (or certificates)  against receipt
of such aggregate Purchase Price.

     c. Closing Dates. Subject to the satisfaction (or waiver) of the conditions
thereto  set forth in  Section 6 and  Section 7 below,  the date and time of the
issuance and sale of the Convertible Securities pursuant to this Agreement shall
be (i) in the case of the First  Closing,  12:00 noon  Eastern  Time on April 9,
1997,  (ii) in the case of the Second  Closing,  12:00 noon  Eastern Time on the
fifth (5th) trading day following  notification of  satisfaction  (or waiver) of
the  conditions  to such closing set forth in Section 7(b) hereof  (subject,  in
each case, to a two (2) business day grace period at either party's option, but,
in any event,  not later than April 12, 1997 in the case of the First  Closing),
or, in each case, such other time, as may be mutually agreed upon by the Company
and the Purchasers.  The closings shall occur at the offices of Klehr, Harrison,
Harvey,  Branzburg & Ellers,  1401  Walnut  Street,  Philadelphia,  Pennsylvania
19102.


                                      -2-
<PAGE>

2. PURCHASER'S REPRESENTATIONS AND WARRANTIES

     Each Purchaser severally represents and warrants to the Company that:

     a. Investment Purpose.  Purchaser is purchasing the Convertible  Securities
for  Purchaser's  own account for  investment  only and not with a present  view
towards the public sale or distribution  thereof,  except pursuant to sales that
are exempt from the registration requirements of the Securities Act and/or sales
registered under the Securities Act.  Purchaser  understands that Purchaser must
bear the economic risk of this  investment  indefinitely,  unless the Securities
are  registered  pursuant  to  the  Securities  Act  and  any  applicable  state
securities or blue sky laws or an exemption from such registration is available,
and that the Company has no present intention of registering any such Securities
other than as contemplated by the Registration Rights Agreement. Notwithstanding
anything in this Section  2(a) to the  contrary,  by making the  representations
herein,  the Purchaser  does not agree to hold the Securities for any minimum or
other  specific term and reserves the right to dispose of the  Securities at any
time in accordance with or pursuant to a registration  statement or an exemption
under the Securities Act.

     b. Accredited  Investor  Status.  Purchaser is an "Accredited  Investor" as
that term is defined in Rule 501(a) of Regulation D.

     c.  Reliance on  Exemptions.  Purchaser  understands  that the  Convertible
Securities  are being  offered and sold to Purchaser in reliance  upon  specific
exemptions from the registration requirements of United States federal and state
securities  laws and that the Company is relying upon the truth and accuracy of,
and Purchaser's  compliance with, the representations,  warranties,  agreements,
acknowledgments  and  understandings  of Purchaser  set forth herein in order to
determine the  availability  of such exemptions and the eligibility of Purchaser
to acquire the Convertible Securities.

     d. Information.  Purchaser and its counsel, if any, have been furnished all
materials  relating to the business,  finances and operations of the Company and
materials  relating to the offer and sale of the  Convertible  Securities  which
have been requested by Purchaser or its counsel.  Purchaser and its counsel have
been  provided  with  all  materials  which  the  Company  deemed  to have  been
reasonably  requested and have had an opportunity to interview  certain member's
of the Company's management, Company legal counsel and the Company's independent
public accountants regarding Davison v. FastComm Communications  Corporation and
Madsen;  (Circuit Court, Fairfax County,  Virginia Case No. 159732),  Davison v.
FastComm  Communications  Corporation;  (Circuit Court, Fairfax County, Virginia
Case No.  159733) and the inquiry by the United States  Securities  and Exchange
Commission  pursuant  to an  order  directing  a  private  investigation,  which
commenced in September 1994. In light of the aforementioned due diligence by the
Purchaser  and its  counsel,  the  Purchaser  has  decided to  proceed  with the
transaction,  upon the  terms  stated  herein.  Purchaser  understands  that the
Company can give no assurance as to the outcome of these  current and any future
events.


                                      -3-
<PAGE>

     Except  as set  forth  above,  neither  such  inquiries  nor any  other due
diligence  investigation  conducted  by  Purchaser  or its counsel or any of its
representatives  shall modify,  amend or affect Purchaser's right to rely on the
Company's representations and warranties contained in Section 3 below. Purchaser
understands that Purchaser's investment in the Securities involves a high degree
of risk.

     e. Governmental Review. Purchaser understands that no United States federal
or state agency or any other  government or governmental  agency has passed upon
or made any recommendation or endorsement of the Securities.

     f. Transfer or Resale. Purchaser understands that (i) except as provided in
the  Registration  Rights  Agreement,  the Securities  have not been and are not
being  registered under the Securities Act or any state securities laws, and may
not  be  transferred  unless  (a)  subsequently  registered  thereunder,  or (b)
Purchaser  shall have  delivered  to the  Company  an opinion of counsel  (which
opinion shall be in form,  substance and scope customary for opinions of counsel
in comparable  transactions,  the cost of which shall be borne by the Purchaser)
to the  effect  that the  Securities  to be sold or  transferred  may be sold or
transferred pursuant to an exemption from such registration or (c) sold pursuant
to Rule 144  promulgated  under the Securities Act (or a successor  rule) ("Rule
144"); (ii) any sale of such Securities made in reliance on Rule 144 may be made
only in accordance with the terms of said Rule and further,  if said Rule is not
applicable,  any  resale of such  Securities  under  circumstances  in which the
seller  (or the  person  through  whom the sale is made)  may be deemed to be an
underwriter  (as  that  term is  defined  in the  Securities  Act)  may  require
compliance  with some other  exemption under the Securities Act or the rules and
regulations of the Securities and Exchange  Commission  (the "SEC")  thereunder;
and (iii)  neither the Company nor any other person is under any  obligation  to
register such Securities  under the Securities Act or any state  securities laws
or to comply with the terms and conditions of any exemption  thereunder (in each
case,  other than pursuant to, and in accordance  with the terms and  conditions
of,  the  Registration  Rights  Agreement).  Purchaser  agrees  that it will not
transfer  Convertible  Securities  having a total principal amount or face value
less than $200,000 to any transferee.

     g. Legends.  Purchaser  understands that the Debentures,  Preferred Shares,
Warrants and, until such time as the  Conversion  Shares and Warrant Shares have
been registered  under the Securities Act as  contemplated  by the  Registration
Rights  Agreement  or otherwise  may be sold by  Purchaser  pursuant to Rule 144
without any restriction as to the public resale thereof,  the  certificates  for
the  Conversion  Shares and  Warrant  Shares will bear a  restrictive  legend in
substantially  the  following  form  (and a  stop-transfer  order  may be placed
against transfer of the certificates for such Securities):

     The securities  represented by this  certificate  have not been  registered
     under the  Securities  Act of 1933, as amended.  The  securities  have been
     acquired for investment and may not be sold, transferred or assigned in the
     absence of an effective  registration  statement for the  securities  under
     said Act, or an opinion of counsel, in form,  substance and scope customary
     for opinions of counsel in comparable


                                      -4-
<PAGE>

     transactions,  that  registration  is not required under said Act or unless
     sold pursuant to Rule 144(k) under said Act.

     The legend set forth above  shall be removed and the Company  shall issue a
certificate  without such legend to the holder of any Security  upon which it is
stamped, if, unless otherwise required by state securities laws, (a) the sale of
such  Security  is  registered  under the  Securities  Act,  or (b) such  holder
provides the Company with an opinion of counsel,  in form,  substance  and scope
customary for opinions of counsel in comparable  transactions (the cost of which
shall be borne by such holder),  to the effect that a public sale or transfer of
such Security may be made without  registration  under the Securities Act or (c)
such holder provides the Company with  reasonable  assurances that such Security
can be sold  pursuant to Rule 144 without  any  restriction  as to the number of
Securities  acquired as of a particular date that can then be immediately  sold.
Purchaser  agrees  to sell all  Securities,  including  those  represented  by a
certificate(s) from which the legend has been removed,  pursuant to an effective
registration  statement and to deliver a prospectus in connection with such sale
or in compliance  with an exemption from the  registration  requirements  of the
Securities  Act. In the event the above  legend is removed from any Security and
thereafter the effectiveness of a registration  statement covering such Security
is suspended or the Company determines that a supplement or amendment thereto is
required by applicable  securities laws, then upon reasonable  advance notice to
Purchaser  the Company may require  that the above  legend be placed on any such
Security  that  cannot  then  be  sold  pursuant  to an  effective  registration
statement  or Rule 144 without any  restriction  as to the number of  Securities
acquired as of a particular date that can then be immediately sold, which legend
shall be  removed  when  such  Security  may be sold  pursuant  to an  effective
registration  statement or Rule 144 without any  restriction as to the number of
Securities acquired as of a particular date that can then be immediately sold.

     h. Authorization;  Enforcement.  This Agreement and the Registration Rights
Agreement  have been duly and validly  authorized,  executed  and  delivered  on
behalf  of  Purchaser  and  are  valid  and  binding   agreements  of  Purchaser
enforceable in accordance with their terms.

     i. Residency.  Purchaser is a resident of the  jurisdiction set forth under
such Purchaser's name on the signature page hereto executed by such Purchaser.

     j. No  Brokers.  Other than  dealings  with JMS and SFG  (each,  as defined
below),  the Purchasers  have taken no action which would give rise to any claim
by any person for brokerage commissions,  finder fees or similar payments by the
Company relating to this Agreement or the transactions contemplated hereby.

3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

     The Company represents and warrants to each Purchaser that:

     a. Organization and Qualification. The Company and each of its subsidiaries
is a corporation  duly organized and existing in good standing under the laws of
the jurisdiction in which


                                      -5-
<PAGE>

it is incorporated,  and has the requisite corporate power to own its properties
and to carry on its business as now being conducted. The Company and each of its
subsidiaries is duly qualified as a foreign corporation to do business and is in
good standing in every jurisdiction where the failure so to qualify would have a
Material  Adverse Effect.  "Material  Adverse Effect" means any material adverse
effect on the operations,  properties or financial  condition of the Company and
its  subsidiaries on a consolidated  basis or on the  transactions  contemplated
hereby.

     b. Authorization;  Enforcement. (i) The Company has the requisite corporate
power and authority to enter into and perform this  Agreement,  the  Debentures,
the  Warrants  and the  Registration  Rights  Agreement,  to issue  and sell the
Debentures  and  Warrants  in  accordance  with the terms  hereof,  to issue the
Conversion  Shares and Warrants upon  conversion of the  Debentures and to issue
the Warrant Shares upon exercise of the Warrants,  in accordance  with the terms
thereof;  (ii) the execution,  delivery and performance of this  Agreement,  the
Debentures,  the Warrants and the  Registration  Rights Agreement by the Company
and the consummation by it of the transactions  contemplated  hereby and thereby
(including without  limitation the issuance of the Debentures,  the issuance and
reservation  for issuance of the  Conversion  Shares and Warrants  issuable upon
conversion  thereof and the issuance and reservation for issuance of the Warrant
Shares  issuable upon exercise of the Warrants) have been duly authorized by the
Company's  Board of Directors and,  except as set forth on Schedule 3(b) hereof,
no further consent or authorization of the Company, its Board or Directors,  and
its  stockholders  is required  (under Rule 4460(i)  promulgated by the National
Association of Securities  Dealers or otherwise);  (iii) this Agreement has been
duly executed and delivered by the Company; and (iv) this Agreement constitutes,
and,  upon  execution  and  delivery by the Company of the  Registration  Rights
Agreement,  the Debentures and the Warrants,  such  agreements  will  constitute
valid and binding  obligations of the Company enforceable against the Company in
accordance with their terms.

     c. Capitalization. The capitalization of the Company as of the date hereof,
including  the  authorized  capital  stock,  the  number  of shares  issued  and
outstanding,  the  number  of  shares  reserved  for  issuance  pursuant  to the
Company's  stock  option  plans,  the  number of shares  reserved  for  issuance
pursuant to securities (other than the Debentures,  the Preferred Shares and the
Warrants) exercisable for, or convertible into or exchangeable for any shares of
Common  Stock  and the  number  of  shares  to be  reserved  for  issuance  upon
conversion  of the  Debentures  (or the  Preferred  Shares) and  exercise of the
Warrants  is set  forth on  Schedule  3(c).  All of such  outstanding  shares of
capital stock have been, or upon issuance will be,  validly  issued,  fully paid
and  nonassessable.  No shares of capital  stock of the Company  (including  the
Conversion  Shares and the Warrant  Shares) are subject to preemptive  rights or
any other  similar  rights of the  stockholders  of the  Company or any liens or
encumbrances. Except as disclosed in Schedule 3(c) or as contemplated herein, as
of the date of this Agreement,  (i) there are no outstanding options,  warrants,
scrip, rights to subscribe to, calls or commitments of any character  whatsoever
relating  to,  or  securities  or  rights  convertible  into or  exercisable  or
exchangeable  for,  any  shares of  capital  stock of the  Company or any of its
subsidiaries, or arrangements by which the Company or any of its subsidiaries is
or may become bound to issue  additional  shares of capital stock of the Company
or any of its  subsidiaries,  and (ii) there are no agreements  or  arrangements
under which the Company or any of its subsidiaries is


                                      -6-
<PAGE>

obligated  to  register  the sale of any of its or their  securities  under  the
Securities  Act  (except the  Registration  Rights  Agreement).  The Company has
furnished to each Purchaser true and correct copies of the Company's Certificate
of   Incorporation   as  in  effect  on  the  date   hereof   ("Certificate   of
Incorporation"),  the  Company's  By-laws as in effect on the date  hereof  (the
"By-laws"),  and all  other  instruments  and  agreements  governing  securities
convertible into or exercisable or exchangeable for Common Stock of the Company.
The  Company  shall  provide  each  Purchaser  with a  written  update  of  this
representation  signed  by  the  Company's  Chief  Executive  Officer  or  Chief
Financial  Officer  on  behalf  of the  Company  as of the date of each  closing
hereunder.

     d. Issuance of Shares.  The  Conversion  Shares and Warrant Shares are duly
authorized  and reserved for issuance,  and, upon  conversion of the  Debentures
(and the  Preferred  Shares,  when  issued)  and  exercise  of the  Warrants  in
accordance  with the terms  thereof,  will be  validly  issued,  fully  paid and
non-assessable, and free from all taxes, liens, claims and encumbrances and will
not be subject to preemptive  rights or other similar rights of  stockholders of
the Company.

     e. No Conflicts. The execution, delivery and performance of this Agreement,
the  Registration  Rights  Agreement,  the  Debentures  and the  Warrants by the
Company,  and the consummation by the Company of the  transactions  contemplated
hereby and thereby (including,  without limitation, the issuance and reservation
for issuance, as applicable, of the Debentures,  Warrants, Conversion Shares and
Warrant  Shares)  will not (i)  result  in a  violation  of the  Certificate  of
Incorporation  or By-laws or (ii) conflict  with, or constitute a default (or an
event which with notice or lapse of time or both would become a default)  under,
or  give to  others  any  rights  of  termination,  amendment,  acceleration  or
cancellation of, any agreement,  indenture or instrument to which the Company or
any of its  subsidiaries  is a party, or result in a violation of any law, rule,
regulation,  order,  judgment  or  decree  (including  U.S.  federal  and  state
securities  laws  and  regulations)  applicable  to  the  Company  or any of its
subsidiaries  or by which any  property  or asset of the  Company  or any of its
subsidiaries  is  bound  or  affected  (except  for  such  conflicts,  defaults,
terminations,  amendments, accelerations,  cancellations and violations as would
not, individually or in the aggregate,  have a Material Adverse Effect). Neither
the Company nor any of its  subsidiaries  is in violation of its  Certificate of
Incorporation, By-laws or other organizational documents and neither the Company
nor any of its subsidiaries is in default (and no event has occurred which, with
notice  or  lapse  of  time  or  both,  would  put  the  Company  or  any of its
subsidiaries in default)  under,  nor has there occurred any event giving others
(with  notice or lapse of time or both) any  rights of  termination,  amendment,
acceleration or cancellation of, any agreement, indenture or instrument to which
the Company or any of its subsidiaries is a party,  except for possible defaults
or  rights as would  not,  individually  or in the  aggregate,  have a  Material
Adverse Effect. The businesses of the Company and its subsidiaries are not being
conducted,  and shall not be  conducted  so long as a Purchaser  owns any of the
Securities, in violation of any law, ordinance or regulation of any governmental
entity,  except for possible violations the sanctions for which either singly or
in  the  aggregate  would  not  have  a  Material  Adverse  Effect.   Except  as
specifically contemplated by this Agreement and as required under the Securities
Act and any  applicable  state  securities  laws, the Company is not required to
obtain  any  consent,   authorization  or  order  of,  or  make  any  filing  or
registration  with, any court or  governmental  agency or any regulatory or self
regulatory agency in


                                      -7-
<PAGE>

order for it to execute,  deliver or perform any of its  obligations  under this
Agreement, the Registration Rights Agreement, the Debentures or the Warrants, in
each case in accordance with the terms hereof or thereof.  The Company is not in
violation of the listing  requirements of the Nasdaq National Market  ("NASDAQ")
and does not  reasonably  anticipate  that the Common  Stock will be delisted by
NASDAQ in the foreseeable future.

     f. SEC  Documents,  Financial  Statements.  Except as disclosed in Schedule
3(f), since April 30, 1994, the Company has timely filed all reports, schedules,
forms,  statements and other  documents  required to be filed by it with the SEC
pursuant to the reporting  requirements of the Securities  Exchange Act of 1934,
as amended (the  "Exchange  Act") (all of the foregoing  filed prior to the date
hereof and after April 30, 1994, and all exhibits included therein and financial
statements   and  schedules   thereto  and  documents   (other  than   exhibits)
incorporated by reference therein,  being hereinafter  referred to herein as the
"SEC Documents").  The Company has delivered to each Purchaser true and complete
copies  of  the  SEC  Documents,   except  for  such  exhibits,   schedules  and
incorporated documents. As of their respective dates, the SEC Documents complied
in all material respects with the requirements of the Exchange Act and the rules
and  regulations  of the  SEC  promulgated  thereunder  applicable  to  the  SEC
Documents,  and none of the SEC Documents,  as amended or  supplemented,  at the
time they were filed with the SEC,  contained any untrue statement of a material
fact or  omitted  to state a  material  fact  required  to be stated  therein or
necessary in order to make the statements therein, in light of the circumstances
under which they were made, not misleading.  As of their  respective  dates, the
financial statements of the Company included in the SEC Documents complied as to
form in all material  respects with applicable  accounting  requirements and the
published rules and regulations of the SEC with respect thereto.  Such financial
statements  have  been  prepared  in  accordance  with U.S.  generally  accepted
accounting principles, consistently applied, during the periods involved (except
(i) as may be otherwise  indicated  in such  financial  statements  or the notes
thereto, or (ii) in the case of unaudited interim statements, to the extent they
may include  footnotes  or may be condensed  or summary  statements)  and fairly
present in all material  respects  the  consolidated  financial  position of the
Company  and its  consolidated  subsidiaries  as of the  dates  thereof  and the
consolidated  results of their  operations  and cash flows for the periods  then
ended (subject,  in the case of unaudited  statements,  to normal year-end audit
adjustments).  Except as set forth in the  financial  statements  of the Company
included in the SEC  Documents,  the Company has no  liabilities,  contingent or
otherwise,  other  than (i)  liabilities  incurred  in the  ordinary  course  of
business  subsequent  to  the  date  of  such  financial   statements  and  (ii)
obligations  under contracts and commitments  incurred in the ordinary course of
business and not required under generally accepted  accounting  principles to be
reflected in such financial statements, which, individually or in the aggregate,
are not material to the financial condition or operating results of the Company.

     g. Absence of Certain  Changes.  Since February 1, 1997,  there has been no
material  adverse  change and no material  adverse  development in the business,
properties,  operations,  financial  condition or results of  operations  of the
Company, except as disclosed in Schedule 3(g) or in the SEC Documents.


                                      -8-
<PAGE>

     h.  Absence of  Litigation.  Except as  disclosed  in the SEC  Documents or
Schedule 3(h), there is no action,  suit,  proceeding,  inquiry or investigation
before  or by  any  court,  public  board,  government  agency,  self-regulatory
organization  or body pending or, to the  knowledge of the Company or any of its
subsidiaries,   threatened  against  or  affecting  the  Company,   any  of  its
subsidiaries,  or any  of  their  respective  directors  or  officers  in  their
capacities as such.

     i.  Disclosure.  All information  relating to or concerning the Company set
forth in this Agreement or provided to the  Purchasers  pursuant to Section 2(d)
hereof and otherwise in connection with the transactions  contemplated hereby is
true and  correct in all  material  respects  and the Company has not omitted to
state any material fact necessary in order to make the statements made herein or
therein,  in  light  of the  circumstances  under  which  they  were  made,  not
misleading.  No event or  circumstance  has  occurred or exists with  respect to
Company  or  its  subsidiaries  or  their  respective  businesses,   properties,
operations  or  financial  conditions,  which,  under  applicable  law,  rule or
regulation,  requires public disclosure or announcement by the Company but which
has not been so publicly announced or disclosed.

     j.  Acknowledgment   Regarding  Purchasers'  Purchase  of  the  Convertible
Securities.  The Company acknowledges and agrees that none of the Purchasers are
acting as a  financial  advisor or  fiduciary  of the Company (or in any similar
capacity)  with  respect  to this  Agreement  or the  transactions  contemplated
hereby, and any advice given by any Purchaser,  or any of their  representatives
or agents,  in connection with this Agreement and the transactions  contemplated
hereby  is  merely  incidental  to  each  Purchaser's  purchase  of  Convertible
Securities.  The Company further represents to each Purchaser that the Company's
decision to enter into this  Agreement  has been based solely on an  independent
evaluation by the Company and its representatives.

     k.  Current  Public  Information.  The  Company is  currently  eligible  to
register the resale of its Common Stock on a registration  statement on Form S-3
under the Securities Act.

     l. No  General  Solicitation.  Neither  the  Company  nor  any  distributor
participating on the Company's behalf in the  transactions  contemplated  hereby
(if any) nor any person  acting for the Company,  or any such  distributor,  has
conducted any "general  solicitation,"  as such term is defined in Regulation D,
with respect to any of the Securities being offered hereby.

     m. No Integrated Offering.  Neither the Company, nor any of its affiliates,
nor any person  acting on its or their behalf,  has directly or indirectly  made
any  offers  or sales of any  security  or  solicited  any  offerers  to buy any
security under  circumstances that would require  registration of the Securities
being offered hereby under the Securities Act.

     n. No Brokers. The Company has taken no action which would give rise to any
claim by any person for brokerage commissions, finder's fees or similar payments
by any Purchaser  relating to this  Agreement or the  transactions  contemplated
hereby, except for dealings with Janney Montgomery Scott ("JMS") and Susquehanna
Financial Group, Inc. ("SFG") whose commissions


                                      -9-
<PAGE>

and fees (in the  aggregate  amount of $250,000)  will be paid by the Company to
JMS as  follows:  (i)  $150,000 at the First  Closing  and (ii)  $100,000 at the
Second Closing.

     o. Acknowledgment of Dilution. The number of Conversion Shares and Warrants
issuable upon  conversion of the  Debentures  and Preferred  Shares may increase
substantially in certain  circumstances,  including the circumstance wherein the
trading price of the Common Stock declines.  The Company  acknowledges  that its
obligation  to issue  Conversion  Shares and  Warrants  upon  conversion  of the
Debentures  and the Preferred  Shares in accordance  with the Debentures and the
Certificate  of  Designation,   respectively,  is  absolute  and  unconditional,
regardless  of the  dilution  that  such  issuance  may  have  on the  ownership
interests of other stockholders.

     p. Intellectual Property.  Each of the Company and its subsidiaries owns or
possesses   adequate  and  enforceable   rights  to  use  all  patents,   patent
applications,  trademarks,  trademark applications,  trade names, service marks,
copyrights, copyright applications,  licenses, know-how (including trade secrets
and  other   unpatented   and/or   unpatentable   proprietary  or   confidential
information,  systems or procedures)  and other similar  rights and  proprietary
knowledge  (collectively,  "Intangibles")  necessary  for  the  conduct  of  its
business as now being conducted and as described in the Company's  Annual Report
on Form 10-K for the fiscal year ended April 30,  1996.  Neither the Company nor
any subsidiary of the Company  infringes or is in conflict with any right of any
other  person with  respect to any  Intangibles  which,  individually  or in the
aggregate,  if the subject of an unfavorable decision,  ruling or finding, would
have a Material Adverse Effect.

     q.  Foreign  Corrupt  Practices.  Neither  the  Company,  nor  any  of  its
subsidiaries,  nor any director, officer, agent, employee or other person acting
on behalf of the  Company or any  subsidiary  has,  in the course of his actions
for, or on behalf of, the  Company,  used any  corporate  funds for any unlawful
contribution,  gift,  entertainment  or  other  unlawful  expenses  relating  to
political activity;  made any direct or indirect unlawful payment to any foreign
or domestic government official or employee from corporate funds; violated or is
in violation of any provision of the U.S. Foreign Corrupt Practices Act of 1977;
or made any bribe, rebate, payoff, influence payment, kickback or other unlawful
payment to any foreign or domestic government official or employee.

4. COVENANTS.

     a. Commercially  Reasonable Efforts. The parties shall use all commercially
reasonable efforts timely to satisfy each of the conditions described in Section
6 and 7 of this Agreement.

     b. Form D; Blue Sky Laws.  The Company agrees to file a Form D with respect
to the Securities as required  under  Regulation D and to provide a copy thereof
to the Purchasers  promptly after such filing.  The Company shall,  on or before
the date of the First Closing,  take such action as the Company shall reasonably
determine  is  necessary to qualify the  Securities  for sale to the  Purchasers
pursuant to this Agreement under applicable securities or "blue sky" laws of the
states of the United  States or obtain  exemption  therefrom,  and shall provide
evidence of any such action so taken to the  Purchasers  on or prior to the date
of the First Closing.


                                      -10-
<PAGE>

     c. Reporting Status. So long as any Purchaser  beneficially owns any of the
Securities,  the Company shall timely file all reports required to be filed with
the SEC pursuant to the Exchange  Act, and the Company  shall not  terminate its
status as an issuer  required to file reports under the Exchange Act even if the
Exchange  Act  or  the  rules  and  regulations  thereunder  would  permit  such
termination.

     d. Use of Proceeds. The Company shall use the proceeds from the sale of the
Convertible  Securities as set forth on Schedule 4(d); provided,  however,  that
the Company shall not, directly or indirectly, use such proceeds for any loan to
or investment in any other corporation,  partnership, enterprise or other person
(except in connection with its direct subsidiaries).

     e. Additional Equity Capital; Right of First Offer. The Company agrees that
during  the period  beginning  on the date of the First  Closing  and ending one
hundred  and  eighty  (180)  days  following  the First  Closing  (the  "Lock-Up
Period"),  the  Company  will not,  without  the prior  written  consent of SFG,
contract with any party to obtain  additional  equity financing  (including debt
financing with an equity component) in any form having common stock registration
rights and/or public resale rights  effective within 270 days of the date of the
First Closing ("Future  Offerings").  In addition,  the Company will not conduct
any Future  Offering  during the period  beginning on the first day  immediately
after the conclusion of the Lock-Up Period and ending 270 days thereafter unless
it shall have first  delivered to each Purchaser at least five (5) business days
prior to the closing of such Future  Offering,  written  notice  describing  the
proposed  Future  Offering,  including  the terms and  conditions  thereof,  and
providing  each  Purchaser  and its  affiliates,  an option  during the five (5)
business  day period  following  delivery of such notice to purchase  all or any
portion of such  Purchaser's  Applicable  Percentage  (as defined  below) of the
securities   being  offered  in  the  Future  Offering  on  the  same  terms  as
contemplated  by such Future Offering (the  limitations  referred to in this and
the immediately  preceding sentence are collectively referred to as the "Capital
Raising  Limitations").  The Capital Raising  Limitations shall not apply to any
commercial  bank  loan  or the  issuance  of  securities  in  connection  with a
strategic merger, consolidation, acquisition or sale of assets, or in connection
with any strategic  partnership  or joint  venture,  or in  connection  with the
disposition or  acquisition of a business,  product or license by the Company or
exercise of options by employees,  consultants or directors. The Capital Raising
Limitations  also shall not apply to (i) the issuance of securities  pursuant to
an underwritten  public offering,  (ii) the issuance of securities upon exercise
or conversion of the Company's options, warrants or other convertible securities
outstanding  as of the date hereof or (iii) the grant of  additional  options or
warrants,  or the issuance of  additional  securities,  under any Company  stock
option or  restricted  stock plan for the  benefit of the  Company's  employees,
directors  or  consultants.  For  purposes  of this  Section  4(e),  "Applicable
Percentage" at any time with respect to any Purchaser  shall mean the percentage
obtained by dividing (x) the aggregate  number of  Conversion  Shares then owned
by, or issuable  upon  conversion of  Debentures  and Preferred  Shares to, such
Purchaser by (y) the aggregate  number of Conversion  Shares then outstanding or
issuable  to all  Purchasers  (determined  as set  forth in  clause  (x) of this
sentence).


                                      -11-
<PAGE>

     f. Expenses. The Company shall pay all accountable expenses incurred by SFG
(excluding  salaries  of SFG  employees)  in  connection  with the  negotiation,
preparation, execution, delivery and performance of this Agreement and the other
agreements to be executed in connection herewith, including, without limitation,
attorneys' fees and expenses.  The Company's obligation to pay SFG's accountable
expenses  under this  Section 4(f) shall be limited to Twenty  Thousand  Dollars
($20,000) in the aggregate.

     g. Financial Information.  The Company agrees to send the following reports
to each Purchaser  until such Purchaser  transfers,  assigns or sells all of its
Securities:  (i) within  ten (10) days after the filing  with the SEC, a copy of
its Annual Report on Form 10-K,  its Quarterly  Reports on Form 10-Q,  its proxy
statements  and any Current  Reports on Form 8-K; and (ii) within three (3) days
after release,  copies of all press releases issued by the Company or any of its
subsidiaries.  In addition,  the Company shall send to each Purchaser a draft of
the Company's  proxy  statement for review,  for  informational  purposes  only,
(prior to the filing thereof with the SEC) with respect to the upcoming  meeting
of  shareholders  at which the approval of blank check  preferred  stock will be
sought.

     h.  Reservation of Shares.  The Company shall at all times have  authorized
and reserved for the purpose of issuance a sufficient number of shares of Common
Stock to provide  for the full  conversion  of the  outstanding  Debentures  and
Preferred Shares and issuance of the Conversion  Shares in connection  therewith
and the full exercise of the Warrants and the issuance of the Warrant  Shares in
connection   therewith  and  as  otherwise  required  by  the  Debentures,   the
Certificate  of Designation  and the Warrants.  The Company shall not reduce the
number of shares  reserved for issuance upon  conversion of the  Debentures  and
Preferred  Shares and the full  exercise of the Warrants  without the consent of
the Purchasers holding a majority of the principal amount of the Debentures then
held by all Purchasers  and the  Purchasers  holding a majority of the Preferred
Shares then held by all Purchasers.

     i. Listing. The Company shall promptly secure the listing of the Conversion
Shares and Warrant  Shares upon each national  securities  exchange or automated
quotation  system,  if any,  upon which  shares of Common  Stock are then listed
(subject to official  notice of  issuance)  and shall  maintain,  so long as any
other shares of Common Stock shall be so listed,  such listing of all Conversion
Shares  from  time  to time  issuable  upon  conversion  of the  Debentures  and
Preferred  Shares and Warrant Shares from time to time issuable upon exercise of
the Warrants. The Company will take all action necessary to continue the listing
and  trading  of its Common  Stock on the  NASDAQ,  the New York Stock  Exchange
("NYSE") or the American Stock Exchange ("AMEX") and will comply in all respects
with the Company's  reporting,  filing and other obligations under the bylaws or
rules of the  National  Association  of  Securities  Dealers  ("NASD")  and such
exchanges, as applicable.

     j.  Corporate  Existence.  So long as a  Purchaser  beneficially  owns  any
Debentures,  Preferred  Shares or  Warrants,  the  Company  shall  maintain  its
corporate existence,  except in the event of a merger,  consolidation or sale of
all or substantially all of the Company's assets, as long as the


                                      -12-
<PAGE>

surviving  or successor  entity in such  transaction  (i) assumes the  Company's
obligations  hereunder and under the agreements and instruments  entered into in
connection  herewith  regardless  of whether or not the Company would have had a
sufficient  number of  shares  of Common  Stock  authorized  and  available  for
issuance  in order to effect the  conversion  of all  Debentures  and  Preferred
Shares and exercise in full of all Warrants  outstanding  as of the date of such
transaction  and (ii) is a publicly  traded  corporation  whose  common stock is
listed for trading on the NASDAQ, NYSE or AMEX.

     k. No Dividends, Etc. So long as a Purchaser beneficially owns at least ten
percent (10%) of the original principal amount or face amount, as applicable, of
the Convertible Securities,  the Company shall not redeem, or declare or pay any
cash dividend or  distribution  on, any capital stock of the Company (other than
the Preferred Shares).

     l. Sales of Common Stock. So long as such Purchaser  beneficially  owns any
Convertible  Securities,  the  Purchaser  agrees to be  responsive to reasonable
inquiries by the Company regarding sales of Common Stock.

5. TRANSFER AGENT INSTRUCTIONS.

     The  Company  shall  instruct  its  transfer  agent to issue  certificates,
registered  in the name of each  Purchaser  or its nominee,  for the  Conversion
Shares and Warrant Shares in such amounts as specified from time to time by such
Purchaser to the Company upon conversion of the Debentures and Preferred  Shares
or exercise of the Warrants.  Prior to registration of the Conversion Shares and
Warrant Shares under the Securities Act or resale of such Securities  under Rule
144,  all such  certificates  shall bear the  restrictive  legend  specified  in
Section 2(g) of this Agreement.  The Company warrants that no instruction  other
than  such  instructions  referred  to in this  Section  5,  and  stop  transfer
instructions to give effect to Section 2(f) hereof in the case of the Conversion
Shares and Warrant Shares prior to  registration  of the  Conversion  Shares and
Warrant  Shares under the  Securities  Act,  will be given by the Company to its
transfer agent and that the Securities shall otherwise be freely transferable on
the books and  records  of the  Company as and to the  extent  provided  in this
Agreement and the Registration  Rights Agreement.  Nothing in this Section shall
affect  in any way each  Purchaser's  obligations  and  agreement  set  forth in
Section  2(g)  hereof  to  resell  the  Securities   pursuant  to  an  effective
registration  statement and to deliver a prospectus in connection with such sale
or in  compliance  with an  exemption  from  the  registration  requirements  of
applicable  securities law. If a Purchaser  provides the Company with an opinion
of  counsel,  which  opinion of counsel  shall be in form,  substance  and scope
customary for opinions of counsel in comparable  transactions (the cost of which
shall be borne by the  Purchaser),  to the effect that the Securities to be sold
or  transferred  may be  sold  or  transferred  pursuant  to an  exemption  from
registration,  the Company  shall permit the  transfer,  and, in the case of the
Conversion  Shares and Warrant Shares,  promptly  instruct its transfer agent to
issue  one or more  certificates  in such  name  and in  such  denominations  as
specified by a Purchaser.  The Company  acknowledges  that a breach by it of its
obligations  hereunder will cause  irreparable  harm to a Purchaser by vitiating
the intent and purpose of the transaction contemplated hereby. Accordingly,  the
Company  acknowledges  that the  remedy at law for a breach  of its  obligations
under this Section 5 will be inadequate and agrees,


                                      -13-
<PAGE>

in the event of a breach or threatened  breach by the Company of the  provisions
of this Section 5, that a Purchaser shall be entitled,  in addition to all other
available  remedies,  to an  injunction  restraining  any breach  and  requiring
immediate issuance and transfer,  without the necessity of showing economic loss
and without any bond or other security being required.

6. CONDITIONS TO THE COMPANY'S OBLIGATION TO SELL.

     The  obligation  of the  Company  hereunder  to issue and sell  Convertible
Securities to a Purchaser at the closings is subject to the satisfaction,  at or
before the appropriate  closing,  of each of the following  conditions  thereto,
provided that these  conditions  are for the  Company's  sole benefit and may be
waived by the Company at any time in its sole discretion.  The obligation of the
Company to issue and sell the Convertible  Securities to any Purchaser hereunder
is distinct  and  separate  from its  obligation  to issue and sell  Convertible
Securities  to any other  Purchaser  hereunder  and any  failure  by one or more
Purchasers  to fulfill the  conditions  set forth  herein or to  consummate  the
purchase of Convertible Securities hereunder will not relieve the Company of its
obligations with respect to any other Purchaser.

     (a) With respect to the First Closing:

          (i) The applicable Purchaser shall have executed the signature page to
this Agreement and the Registration Rights Agreement,  and delivered the same to
the Company.

          (ii) The applicable  Purchaser  shall have paid the Purchase Price for
the Convertible Securities purchased in accordance with Section 1(b) above.

          (iii) The representations  and warranties of the applicable  Purchaser
shall be true and correct in all material  respects as of the date when made and
as of the date and time of the First Closing as though made at that time (except
for  representations  and  warranties  that speak as of a specific  date,  which
representations  and warranties  shall be true and correct as of such date), and
the applicable  Purchaser  shall have  performed,  satisfied and complied in all
material respects with the covenants, agreements and conditions required by this
Agreement  to be  performed,  satisfied  or  complied  with  by  the  applicable
Purchaser at or prior to the First Closing.

          (iv) No statute, rule, regulation,  executive order, decree, ruling or
injunction  shall have been  enacted,  entered,  promulgated  or endorsed by any
court or governmental authority of competent jurisdiction or any self-regulatory
organization  having  authority  over  the  matters  contemplated  hereby  which
prohibits  the  consummation  of any of the  transactions  contemplated  by this
Agreement.

     (b) With respect to the Second Closing:
     
          (i) The applicable Purchaser shall have executed the signature page to
this Agreement and the Registration Rights Agreement,  and delivered the same to
the Company.


                                      -14-
<PAGE>

          (ii) The applicable  Purchaser  shall have paid the Purchase Price for
the Convertible Securities purchased in accordance with Section 1(b) above.

          (iii) The representations  and warranties of the applicable  Purchaser
shall be true and correct in all material  respects as of the date when made and
as of the date and time of such  closing as though made at that time (except for
representations  and  warranties  that  speak as of a  specific  date),  and the
applicable  Purchaser  shall  have  performed,  satisfied  and  complied  in all
material respects with the covenants, agreements and conditions required by this
Agreement  to be  performed,  satisfied  or  complied  with  by  the  applicable
Purchaser at or prior to such closing.

          (iv) No statute, rule, regulation,  executive order, decree, ruling or
injunction  shall have been  enacted,  entered,  promulgated  or endorsed by any
court or governmental authority of competent jurisdiction or any self-regulatory
organization  having  authority  over  the  matters  contemplated  hereby  which
prohibits  the  consummation  of any of the  transactions  contemplated  by this
Agreement.

7. CONDITIONS TO EACH PURCHASER'S OBLIGATION TO PURCHASE.

     The  obligation  of  each  Purchaser  hereunder  to  purchase   Convertible
Securities  at the  closings  is subject to the  satisfaction,  at or before the
appropriate  closing date, of each of the  following  conditions,  provided that
these conditions are for such Purchaser's sole benefit and may be waived by such
Purchaser at any time in the Purchaser's sole discretion:

     (a) With respect to the First Closing:

          (i)  The  Company  shall  have  executed  the  signature  page to this
Agreement and the Registration Rights Agreement,  and delivered the same to such
Purchaser.

          (ii) The Company shall have  delivered  duly executed  Debentures  (in
such  denominations  as such  Purchaser  shall  request)  to such  Purchaser  in
accordance with Section 1(b) above.

          (iii) The Common Stock shall be authorized for quotation on NASDAQ and
trading in the Common Stock (or NASDAQ  generally) shall not have been suspended
by the SEC or NASDAQ.

          (iv) The  representations  and warranties of the Company shall be true
and correct in all material respects as of the date when made and as of the date
of the First Closing as though made at that time (except for representations and
warranties  that  speak  as of a  specific  date)  and the  Company  shall  have
performed,  satisfied and complied in all material  respects with the covenants,
agreements and conditions required by this Agreement to be performed,  satisfied
or complied  with by the  Company at or prior to the date of the First  Closing.
Such  Purchaser  shall  have  received  a  certificate,  executed  by the  chief
executive officer of the Company, dated as of the date of the First


                                      -15-
<PAGE>

Closing,  to  the  foregoing  effect  and as to  such  other  matters  as may be
reasonably requested by such Purchaser.

          (v) No statute, rule,  regulation,  executive order, decree, ruling or
injunction  shall have been  enacted,  entered,  promulgated  or endorsed by any
court or governmental authority of competent jurisdiction or any self-regulatory
organization  having  authority  over  the  matters  contemplated  hereby  which
prohibits  the  consummation  of any of the  transactions  contemplated  by this
Agreement.

          (vi) Such  Purchaser  shall have  received the  officer's  certificate
described in Section 3(c) above, dated as of the date of the First Closing.

          (vii) Such  Purchaser  shall have received an opinion of the Company's
counsel, dated as of the date of the First Closing, in form, scope and substance
reasonably  satisfactory  to such  Purchaser  and in  substantially  the form of
Exhibit D-1 attached hereto.

          (viii)  The  Company   shall  have   delivered   evidence   reasonably
satisfactory to the Purchasers  that the Company's  transfer agent has agreed to
act in accordance with  irrevocable  instructions in the form attached hereto as
Exhibit E.

     (b) With respect to the Second Closing:

          (i)  The  Company  shall  have   executed   this   Agreement  and  the
Registration Rights Agreement, and delivered the same to such Purchaser.

          (ii) The Company shall have  delivered  duly executed  Debentures  (or
certificates  representing the Preferred Shares) (each in such  denominations as
such Purchaser  shall request) to such Purchaser in accordance with Section 1(b)
above.

          (iii) The Common Stock shall be authorized for quotation on NASDAQ and
trading in the Common Stock (or NASDAQ  generally) shall not have been suspended
by the SEC or NASDAQ.

          (iv) The  representations  and warranties of the Company shall be true
and correct in all material respects as of the date when made and as of the date
of the Second  Closing as though made at that time  (except for  representations
and  warranties  that speak as of a specific  date) and the  Company  shall have
performed,  satisfied and complied in all material  respects with the covenants,
agreements and conditions required by this Agreement to be performed,  satisfied
or complied  with by the Company at or prior to the date of the Second  Closing.
Such  Purchaser  shall  have  received  a  certificate,  executed  by the  chief
executive officer of the Company, dated as of the date of the Second Closing, to
the foregoing effect and as to such other matters as may be reasonably requested
by such Purchaser (including,  but not limited to, certifications related to and
with respect to the Preferred  Shares and the  Conversion  Shares  issuable upon
conversion thereof).


                                      -16-
<PAGE>

          (v) No statute, rule,  regulation,  executive order, decree, ruling or
injunction  shall have been  enacted,  entered,  promulgated  or endorsed by any
court or governmental authority of competent jurisdiction or any self-regulatory
organization  having  authority  over  the  matters  contemplated  hereby  which
prohibits  the  consummation  of any of the  transactions  contemplated  by this
Agreement.

          (vi) Such  Purchaser  shall have  received the  officer's  certificate
described in Section 3(c) above, dated as of the date of the Second Closing.

          (vii) Such  Purchaser  shall have received an opinion of the Company's
counsel,  dated  as of the  date of the  Second  Closing,  in  form,  scope  and
substance  reasonably  satisfactory to such Purchaser and in  substantially  the
form of Exhibit D-1 attached hereto (if Debentures are to be issued and sold) or
in the form of Exhibit D-2 attached hereto (if Preferred Shares are to be issued
and sold).

          (viii) The Registration  Statement required to be filed by the Company
pursuant to Section 2(a) of the  Registration  Rights  Agreement shall have been
declared  effective  by the SEC no later  than  the one  hundred  and  eightieth
(180th) day after the First Closing and shall be effective and available for use
by such Purchaser as of the date of the Second Closing.

          (ix) No  material  adverse  change  or  development  in the  business,
operations,  financial  condition or results of  operations of the Company shall
have occurred since the First Closing.

          (x) No Event of Default (as defined in Article VIII of the Debentures)
shall have occurred.

          (xi) If Preferred Shares are to be issued and sold, the Certificate of
Designation  shall have been  accepted for filing with the Secretary of State of
Virginia,  and a copy thereof  certified  by such  Secretary of State shall have
been delivered to such Purchaser.

8. GOVERNING LAW; MISCELLANEOUS.

     a. Governing  Law;  Jurisdiction.  This Agreement  shall be governed by and
construed in  accordance  with the laws of the State of New York  applicable  to
contracts  made and to be  performed  in the State of New York.  The Company and
each  Purchaser  irrevocably  consent to the  jurisdiction  of the United States
federal courts located in New York, New York in any suit or proceeding  based on
or arising  under  this  Agreement  and  irrevocably  agrees  that all claims in
respect of such suit or proceeding may be determined in such courts. The Company
and each Purchaser irrevocably waive the defense of an inconvenient forum to the
maintenance of such suit or proceeding.  The Company and each Purchaser  further
agree that service of process upon the Company  mailed by first class mail shall
be deemed in every respect  effective service of process upon the Company in any
suit or proceeding based on or arising under this Agreement. Nothing


                                      -17-
<PAGE>

herein  shall  affect any  party's  right to serve  process in any other  manner
permitted by law. The Company agrees that a final non-appealable judgment in any
such  suit or  proceeding  shall  be  conclusive  and may be  enforced  in other
jurisdictions by suit on such judgment or in any other lawful manner.

     b.   Counterparts.   This   Agreement  may  be  executed  in  two  or  more
counterparts,  all of which shall be considered  one and the same  agreement and
shall  become  effective  when  counterparts  have been signed by each party and
delivered to the other party.

     c.  Headings.  The  headings  of  this  Agreement  are for  convenience  of
reference  and shall not form part of, or affect  the  interpretation  of,  this
Agreement.

     d.  Severability.  If any provision of this  Agreement  shall be invalid or
unenforceable in any jurisdiction, such invalidity or unenforceability shall not
affect the validity or  enforceability of the remainder of this Agreement or the
validity or enforceability of this Agreement in any other jurisdiction.

     e.  Entire  Agreement;  Amendments.  This  Agreement  and  the  instruments
referenced  herein contain the entire  understanding of the parties with respect
to the matters covered herein and therein and, except as specifically  set forth
herein  or  therein,   neither  the   Company  nor  the   Purchasers   make  any
representation,  warranty, covenant or undertaking with respect to such matters.
No provision of this  Agreement  may be waived  other than by an  instrument  in
writing signed by the party to be charged with  enforcement  and no provision of
this  Agreement may be amended other than by an instrument in writing  signed by
the Company and the Purchasers.

     f. Notices.  Any notices  required or permitted to be given under the terms
of this Agreement  shall be sent by certified or registered mail (return receipt
requested) or delivered  personally or by courier or by confirmed telecopy,  and
shall be effective five days after being placed in the mail, if mailed,  or upon
receipt  or  refusal  of  receipt,  if  delivered  personally  or by  courier or
confirmed  telecopy,  in each case addressed to a party.  The addresses for such
communications shall be:

               If to the Company:

               FastComm Communications Corporation
               45472 Holiday Drive
               Sterling, VA 20166
               Telecopy: (703) 318-4315
               Attn:  President


                                      -18-
<PAGE>

               with a copy to:

               Amon & Sabatini, L.L.P.
               437 Madison Avenue
               New York, NY 10022
               Telecopy: (212) 980-3075
               Attn: Thomas Amon, Esquire

               If to Capital Ventures International:

               Capital Ventures International
               c/o Heights Capital Management
               425 California Street
               Suite 1100
               San Francisco, CA 94104
               Telecopy: (415) 403-6525
               Attention: Michael Spolan

               with a copy to:

               Klehr, Harrison, Harvey, Branzburg & Ellers
               1401 Walnut Street
               Philadelphia, PA  19102
               Telecopy:  (215) 568-6603
               Attention: Stephen T. Burdumy, Esquire

     If to any other Purchaser, to such address set forth under such Purchaser's
name on the signature page hereto executed by such Purchaser.

     Each  party  shall  provide  notice to the other  parties  of any change in
address.

     g.  Successors and Assigns.  This Agreement shall be binding upon and inure
to the benefit of the  parties and their  successors  and  assigns.  Neither the
Company  nor  any  Purchaser  shall  assign  this  Agreement  or any  rights  or
obligations   hereunder   without  the  prior  written  consent  of  the  other.
Notwithstanding the foregoing,  any Purchaser may assign its rights hereunder to
any of its "affiliates," as that term is defined under the Exchange Act, without
the consent of the Company.  This provision shall not limit a Purchaser's  right
to  transfer  the  Securities  pursuant  to  the  terms  and  conditions  of the
Debentures,  the Certificate of Designation,  the Warrants and this Agreement or
to assign such Purchaser's rights hereunder to any such transferee.

     h. Third Party Beneficiaries. This Agreement is intended for the benefit of
the parties hereto and their respective permitted successors and assigns, and is
not for the benefit of, nor may any  provision  hereof be enforced by, any other
person.


                                      -19-
<PAGE>

     i.  Survival.  The  representations  and  warranties of the Company and the
Purchasers and the agreements and covenants set forth in Sections 2, 3, 4, 5 and
8 shall  survive  the  closings  hereunder  notwithstanding  any  due  diligence
investigation conducted by or on behalf of any Purchasers. The Company agrees to
indemnify  and  hold  harmless  each  Purchaser  and  each of  such  Purchaser's
officers,  directors,  employees,  partners,  agents and  affiliates for loss or
damage (including,  without  limitation,  all legal costs and expenses and other
out-of-pocket expenses) arising as a result of or related to any material breach
by the Company of any of its representations or covenants set forth herein.

     j.  Publicity.  The  Company  and each  Purchaser  shall  have the right to
approve before issuance any press releases,  SEC, NASDAQ or NASD filings, or any
other public  statements with respect to the transactions  contemplated  hereby;
provided,  however,  that the  Company  shall be  entitled,  without  the  prior
approval of the  Purchasers,  to make any press  release or SEC,  NASDAQ or NASD
filings with respect to such  transactions  as is required by applicable law and
regulations  (although  the  Purchasers  shall be  consulted  by the  Company in
connection  with any  such  press  release  prior to its  release  and  shall be
provided with a copy thereof).

     k. Further Assurances. Each party shall do and perform, or cause to be done
and performed,  all such further acts and things,  and shall execute and deliver
all such other agreements, certificates, instruments and documents, as the other
party may reasonably request in order to carry out the intent and accomplish the
purposes of this Agreement and the consummation of the transactions contemplated
hereby.

     l. Termination. In the event that the First Closing shall not have occurred
on or before April 12, 1997, unless the parties agree otherwise,  this Agreement
shall terminate at the close of business on such date.

     m.  Force  Majeure.   Neither  the  Company  nor  any  Purchaser  shall  be
responsible  for any delay or failure to perform any part of this  Agreement  to
the  extent  that  such  delay or  failure  is  solely  caused  by fire,  flood,
earthquake,  explosion,  war, labor strike, riot, act of governmental,  civil or
military authority which imposes a moratorium on the performance of the specific
obligation  in  question  or other  comparable  extraordinary  event  beyond the
Corporation's or Purchaser's control. Notice with full details of any such event
shall  be  given to the  other  party  as  promptly  as  practicable  after  its
occurrence.  The  affected  party  shall use its best  efforts to  minimize  the
effects  of or end any such event so as to  facilitate  the  resumption  of full
performance hereunder.

                  [Remainder of Page Intentionally Left Blank]


                                      -20-
<PAGE>

     IN WITNESS WHEREOF,  the undersigned  Purchaser and the Company have caused
this Agreement to be duly executed as of the date first above written.

PURCHASER:

CAPITAL VENTURES INTERNATIONAL

By: Heights Capital Management, as authorized agent

    By:________________________________

    Name:______________________________

    Title:_____________________________


RESIDENCE: Cayman Islands

ADDRESS:
         c/o Heights Capital Management
         425 California Street
         Suite 1100
         San Francisco, California 94104
         Telecopy: (415) 403-6525
         Attention: Michael Spolan


AGGREGATE SUBSCRIPTION AMOUNT(1)

Principal Amount of Debentures (or Face
   Amount of Preferred Shares)                $3,000,000(1) 
                                              ----------
Purchase Price:                               $3,000,000(1)
                                              ---------- 


FASTCOMM COMMUNICATIONS CORPORATION

    By:___________________________
 
    Name:_________________________

    Title:________________________

- ------------
   (1) Note:  60% of the  purchase  price is due at the First  Closing (at which
closing 60% of the  Debentures  will be issued) and 40% of the purchase price is
due at the Second  Closing (at which  closing the  remainder of the  Convertible
Debentures will be issued).

<PAGE>

     IN WITNESS WHEREOF,  the undersigned  Purchaser and the Company have caused
this Agreement to be duly executed as of the date first above written.

PURCHASER:

NELSON PARTNERS

    By:________________________________

    Name:______________________________

    Title:_____________________________


RESIDENCE: Bermuda

ADDRESS:
         c/o Leeds Management Services, Ltd.
         129 Front Street
         Hamilton HM12


AGGREGATE SUBSCRIPTION AMOUNT(1)

Principal Amount of Debentures (or Face 
   Amount of Preferred Shares)                   $500,000(1)
                                                 --------   
Purchase Price:                                  $500,000(1)
                                                 --------  

FASTCOMM COMMUNICATIONS CORPORATION

    By:________________________________

    Name:______________________________

    Title:_____________________________

- --------------
   (1) Note:  60% of the  purchase  price is due at the First  Closing (at which
closing 60% of the  Debentures  will be issued) and 40% of the purchase price is
due at the Second  Closing (at which  closing the  remainder of the  Convertible
Debentures will be issued).

<PAGE>

     IN WITNESS WHEREOF,  the undersigned  Purchaser and the Company have caused
this Agreement to be duly executed as of the date first above written.

PURCHASER:

 OLYMPUS SECURITIES, LTD.

    By:________________________________

    Name:______________________________

    Title:_____________________________


RESIDENCE: Bermuda

ADDRESS:
                c/o Leeds Management Services, Ltd.
                129 Front Street
                Hamilton HM12


AGGREGATE SUBSCRIPTION AMOUNT(1)

Principal Amount of Debentures (or Face 
    Amount of Preferred Shares)                      $500,000(1)
                                                     --------  
Purchase Price:                                      $500,000(1)
                                                     --------  

FASTCOMM COMMUNICATIONS CORPORATION

    By:________________________________

    Name:______________________________

    Title:_____________________________

- ------------
   (1) Note:  60% of the  purchase  price is due at the First  Closing (at which
closing 60% of the  Debentures  will be issued) and 40% of the purchase price is
due at the Second  Closing (at which  closing the  remainder of the  Convertible
Debentures will be issued).

<PAGE>


     IN WITNESS WHEREOF,  the undersigned  Purchaser and the Company have caused
this Agreement to be duly executed as of the date first above written.

PURCHASER:

CC INVESTMENTS, LDC

By:  CSS Corporation Ltd., Corporate Secretary

    By:________________________________

    Name:______________________________

    Title:_____________________________


RESIDENCE: Cayman Islands

ADDRESS:
            CC Investments, LDC
            c/o Citco Fund Services (Cayman Islands) Ltd.
            Corporate Center, West Bay Road
            P.O. Box 31106
            SMB Grand Cayman, Cayman Islands


AGGREGATE SUBSCRIPTION AMOUNT(1)

Principal Amount of Debentures (or Face
   Amount of Preferred Shares)                    $1,000,000(1)
                                                  ---------- 
Purchase Price:                                   $1,000,000(1)
                                                  ---------- 


FASTCOMM COMMUNICATIONS CORPORATION

     By:________________________________

    Name:______________________________

    Title:_____________________________

- ------------
   (1) Note:  60% of the  purchase  price is due at the First  Closing (at which
closing 60% of the  Debentures  will be issued) and 40% of the purchase price is
due at the Second  Closing (at which  closing the  remainder of the  Convertible
Debentures will be issued).



                          REGISTRATION RIGHTS AGREEMENT

                             

<PAGE>

     REGISTRATION  RIGHTS  AGREEMENT,  dated  as of  January  31,  1997  between
FASTCOMM COMMUNICATIONS CORPORATION, a Virginia corporation (the "Company"), and
Richard L. Apel (the "Hder").

     1.

(a)furnish  to the  Holder of such  Registrable  Securities  a copy of each such
amendment and supplement thereto (in each case including all exhibits), and such
documents,  if any, incorporated by reference in such registration  statement or
prospectus,  and such other  documents,  as the Holder may  reasonably  request;

(b)use best efforts to register or qualify all Registrable  Securities and other
securities covered by such registration statement under such other securities or
blue sky laws of the states of the United States as the Holder shall  reasonably
request,  to keep such  registration or  qualification  in effect for so long as
such registration statement remains in effect, and do any and all other acts and
things which may be  necessary  or advisable to enable the Holder to  consummate
the disposition in such  jurisdictions of his Registrable  Securities offered by
such  registration  statement,  except that the  Company  shall not for any such
purpose be required to qualify generally to do business as a foreign corporation
in any  jurisdiction  wherein  it  would  not but for the  requirements  of this
subsection (d) be obligated to be so qualified, or to subject itself to taxation
in any such  jurisdiction,  or to consent general service of process in any such
jurisdiction;

     In addition,  the Company shall not be required to qualify the  Registrable
Shares or any portion thereof in any jurisdiction  where the Registrable  Shares
do not meet the requirements of such jurisdiction.

(c)upon  request,  furnish  to the  Holder of  Registrable  Securities  a signed
counterpart,  addressed  to the Holder,  an opinion of counsel for the  Company,
dated the effective date of such registration statement covering such items that
are  customarily  covered  in the  opinion  of  issuer's  counsel  delivered  to
underwriters  in  underwritten  public  offerings of securities;  

(d)provide  and cause to be  maintained a transfer  agent and  registrar for all
Registrable  Securities covered by such registration  statement from and after a
date not later than the effective date of such  registration  statement;  

(e)use  best  efforts  to  list  all  Registrable  Securities  covered  by  such
registration statement on each securities exchange on which any of the Company's
Common Stock is then listed or, if the Common Stock is not then quoted on NASDAQ
or listed on any national securities exchange, use its best efforts to have such
Company's Common Stock covered by such  registration  statement quoted by NASDAQ
or, at the option of the Company,  listed on a national securities exchange; and

(f)Expenses.  Except as otherwise  required by applicable law, the Company shall
pay all  Registration  Expenses  in  connection  with  the  registration  of the
Registrable Securities pursuant to Section 2.1. 

1Piggy-Back Registration.

(a)Right to Include  Registrable  Shares. If the Company at any time proposes to
register  any  of  its  securities  under  the  Securities  Act  (other  than  a
registration  on Form S-4,  S-8,  S-14 or S-15 or any successor or similar forms
and other than pursuant to Section 2.1), for sale in a Primary


                                       2
<PAGE>

Registration  it will each such time give prompt written notice to the Holder of
its  intention to do so and of the Holder's  rights under this Section 2.2. Upon
the written request of the Holder made within thirty (30) days after the receipt
of the notice (which request shall specify the Registrable Shares intended to be
disposed of by the Holder and the intended method of disposition  thereof),  the
Company  will  use its  best  efforts  to  effect  the  registration  under  the
Securities Act of all Registrable Shares which the Company has been so requested
to register by the Holder, to the extent requisite to permit the disposition (in
accordance  with the intended  methods  thereof as aforesaid) of the Registrable
Shares so to be  registered,  by  inclusion  of such  Registrable  Shares in the
registration  statement  and,  in the  case  of an  underwritten  offering,  the
underwriting which covers the securities which the Company proposes to register;
provided,  however,  that if, at any time  after  giving  written  notice or its
intention  to register any  securities  and prior to the  effective  date of the
registration  statement filed in connection with such registration,  the Company
shall  determine for any reason either not to register or to delay  registration
of such  securities,  the Company may, at its election,  give written  notice of
such determination to the Holder and, upon the giving of such notice, (i) in the
case of a determination not to register,  shall be relieved of its obligation to
register any Registrable  Shares in connection with such registration (but shall
pay all Registration Expenses in connection therewith),  and (ii) in the case of
a determination to delay  registering,  shall be permitted to delay  registering
such other  securities.  No  registration  effected under this Section 2.2 shall
relieve the Company of its obligation to effect the Primary  Registration  under
Section 2.1. The Holder's participation in any such piggyback registration shall
not require that he pay any portion of the Registration Expenses incurred by the
Company  but such  Holder  shall  pay the  proportional  amount of all state and
federal registration and filing fees and underwriting  discounts and commissions
applicable to Registrable  Shares sold by him and fees and  disbursements of any
legal counsel or accountants retained by such Holder.  

(b)Priority in Piggy-Back Registrations.  If (i) a registration pursuant to this
Section  2.2  involves  an  underwritten  offering  of the  securities  so being
registered to be distributed (on a firm  commitment  basis) by or through one or
more underwriters of recognized  standing under  underwriting  terms appropriate
for such a transaction,  and (ii) the managing  underwriter of such underwritten
offering shall inform the Company and the Holder (if any Registrable Shares held
by the Holder have been requested to be included in such underwritten  offering)
by letter of its belief that the  distribution  of all or a specified  number of
the Registrable Shares requested to be included concurrently with the securities
being  distributed  by such  underwriters  would  interfere  with the successful
marketing of the securities being distributed by such underwriters (such writing
to state the basis of such belief and the approximate  number of the Registrable
Shares  requested to be included which may be distributed  without such effect),
then the Company may, upon written  notice to the Holder,  reduce (if and to the
extent stated by such  managing  underwriter  to be necessary to eliminate  such
effect) the number of the Registrable  Shares, if any,  requested to be included
so that the resultant aggregate number of the Registrable Shares requested to be
included that will be included in such registration shall be equal to the number
of shares stated in such managing underwriter's letter; provided,  however, that
the priority in such  registration  shall be as follows,  (i) first,  securities
offered  for the  account  of the  Company  or,  if such  registration  is for a
security  holder  exercising  a  contractual  request  for  registration,   then
securities offered for the account of such security holder, and (ii) second, the
Registrable Shares on a proportional basis.


                                       3
<PAGE>

(c)Expiration  of  Piggy-Back  Rights.  The Company  shall not be  obligated  to
include  Registrable  Shares  in any  registration  statement  pursuant  to this
Section 2.2 that will become  effective  during a period when the Holder thereof
is eligible to sell such Registrable  Shares pursuant to the  Commission's  Rule
144.  

(d)Lack of  Information.  The Company shall not be required to register or cause
the  registration of the Registrable  Shares or any portion thereof  pursuant to
this Section 2.2 hereof if the Holder shall not promptly supply the Company with
any  information  which the Company may reasonably and timely request in written
form  in  order  to  permit  the  preparation,  filing  and  effectiveness  of a
registration  statement in accordance  with the Securities Act and any rules and
regulations promulgated by the Commission thereunder.  

2Registration Procedures.

If and  whenever  the  Company  is  required  to use best  efforts to effect the
registration of any  Registrable  Shares under the Securities Act as provided in
Sections 2.1 and 2.2 the Company shall, as expeditiously as possible:

(i)prepare  and (within sixty (60) days after the end of the period within which
requests  for  registration  may be given to the Company or in any event as soon
thereafter as possible)  file with the  Commission  the  requisite  registration
statement to effect such  registration  and thereafter use best efforts to cause
such registration statement to become and remain effective;  provided,  however,
that the Company may  discontinue any  registration of its securities  which are
not  Registrable  Shares  (and,  under the  circumstances  specified  in Section
2.2(a),  its securities  which are Registrable  Shares) at any time prior to the
effective date of the registration statement relating thereto;

(ii)prepare and file with the Commission such amendments and supplements to such
registration statement and the prospectus used in connection therewith as may be
necessary to keep such registration  statement  effective and to comply with the
provisions  of  the  Securities  Act  with  respect  to the  disposition  of all
Registrable  Shares covered by such registration  statement until the earlier of
such time as all of such securities have been disposed of in accordance with the
intended  methods  of  disposition  by the  Holder  thereof  set  forth  in such
registration  statement or (a) in the case of a registration pursuant to Section
2.1,  the  period of time  specified  in  Section  2.1,  or (b) in the case of a
registration pursuant to Section 2.2, the expiration of one hundred eighty (180)
days after such registration statement becomes effective;

(iii)furnish  to  the  Holder  of  the   Registrable   Shares  covered  by  such
registration  statement and each  underwriter,  if any, of the securities  being
sold by such  seller  such  number  of  conformed  copies  of such  registration
statement  and of each  such  amendment  and  supplement  thereto  (in each case
including all exhibits),  such number of copies of the  prospectus  contained in
such  registration  statement  (including  each  preliminary  prospectus and any
summary  prospectus)  and any other  prospectus  filed  under Rule 424 under the
Securities Act, in conformity  with the  requirements of the Securities Act, and
such other  documents,  as the Holder and  underwriter,  if any, may  reasonably
request in order to  facilitate  the  public  sale or other  disposition  of the
Registrable Shares owned by such seller;

(iv)use  best  efforts to register or qualify all  Registrable  Shares and other
securities  covered by such  registration  statement under such other securities
laws or blue sky laws of such jurisdiction


                                       4
<PAGE>

the Holder and any underwriter of the securities  being sold by such underwriter
and the Holder shall reasonably request, to keep such registration  statement in
effect, and take any other action which may be reasonably necessary or advisable
to enable the Holder and  underwriter  to  consummate  the  disposition  in such
jurisdictions  of the securities  owned by such seller,  except that the Company
shall not for any such  purpose be required to qualify  generally to do business
as a foreign  corporation in any  jurisdiction  wherein it would not but for the
requirements  of this  subdivision  (iv) be  obligated  to be so  qualified,  to
subject  itself to  taxation in any such  jurisdiction  or to consent to general
service of process in any such jurisdiction;

(v)notify  each  seller  of  Registrable  Shares  covered  by such  registration
statement  and the Holder,  at any time when a  prospectus  relating  thereto is
required to be delivered under the Securities Act, upon the Company's  discovery
that,  or upon the happening of any event as a result of which,  the  prospectus
included in such registration  statement,  as then in effect, includes an untrue
statement of a material  fact or omits to state any material fact required to be
stated therein or necessary to make the statements therein not misleading in the
light of the circumstances under which they were made, and at the request of any
such  seller or the Holder  promptly  prepare  and furnish to such seller or the
Holder  and each  underwriter,  if any,  a  reasonable  number  of  copies  of a
supplement to or an amendment of such prospectus as may be necessary so that, as
thereafter delivered to the purchasers of such securities, such prospectus shall
not include an untrue  statement of a material  fact or omit to state a material
fact required to be stated therein or necessary to make the  statements  therein
not misleading in the light of the circumstances under which they were made; and

     The Holder agrees that,  upon receipt of any notice from the Company of the
occurrence of any event of the kind described in subdivision (v) of this Section
2.3, the Holder will forthwith discontinue his disposition of Registrable Shares
until  the  Holder's  receipt  of the  copies  of the  supplemented  or  amended
prospectus  contemplated  by  subdivision  (v) of this  Section  2.3 and,  if so
directed by the  Company  (at the  Company's  expense)  all  copies,  other than
permanent  file  copies,  then  in the  Holder's  possession  of the  prospectus
relating  to such  Registrable  Shares  current  at the time of  receipt of such
notice.  In the  event  the  Company  shall  give any such  notice,  the  period
mentioned in paragraph  (ii) of this Section 2.3 shall be extended by the length
of the period from and  including  the date when each seller of any  Registrable
Shares covered by such registration statement shall have received such notice to
the date on which each such seller has received  the copies of the  supplemented
or amended prospectus contemplated by paragraph (v) of this Section 2.3.

3Underwritten Offerings.

(a)Underwritten  Piggy-Back  Offerings.  The Holder of Registrable  Shares to be
distributed by underwriters  in a registration  pursuant to Section 2.2 shall be
parties to the underwriting  agreement between the Company and such underwriters
and may require that any or all of the conditions  precedent to the  obligations
of such  underwriters  under  such  underwriting  agreement  also be  conditions
precedent to the  obligations  of the Holder of Registrable  Shares.  The Holder
agrees to make such  representations  or warranties  to or  agreements  with the
Company or the underwriters as are customarily given to the underwriters and any
other representation required by law.


                                       5
<PAGE>

(b)Holdback   Agreements.   Holder  agrees,  if  so  required  by  the  managing
underwriter,  not to effect any public sale or distribution of any securities of
the Company during the seven days prior to and the one hundred eighty (180) days
(or such longer period as the managing  underwriter  may reasonably  require for
all holdback  agreements  entered  into with holders of Common  Stock) after any
underwritten  registration  pursuant  to Section 2.2 has become  effective  (the
"Holdback"),  except as part of such underwritten  registration,  whether or not
such Holder  participates  in such  registration;  provided  however,  that if a
Holder does not participate in a registration,  such Holder shall not be subject
to the Holdback  beyond the  expiration of this  Agreement,  unless agreed to in
writing.  

4Preparation;  Reasonable Investigation.  Notwithstanding Section 2.1 hereof and
despite a Request,  the Company  shall not be required to file any  registration
statement,  or if filed cause any registration statement to become effective, if
at the time the Holder  makes a Request,  or during the period  after filing but
before  effectiveness,  the  Company is engaged in  negotiations  to acquire the
stock or assets of any  business  entity  which  would be  required  to make any
public announcement thereof;  provided,  however, no such delay occasioned under
this Section shall exceed sixty (60) days. If,  however,  the Company shall take
any  action  with  respect  to the  acquisition  of the  stock or  assets of any
business entity which would require the Company to amend any prospectus included
in a  registration  statement  which became  effective  under the  provisions of
Section 2.1 hereof by including  therein  financial  statements which conform to
the  requirements of Regulation S-X  promulgated by the  Commission,  the Holder
agrees to suspend the offering or sale of the Registrable  Shares or any portion
thereof for a period not to exceed 60 days so that the Company may prepare  such
financial  statements,  provided  that the Company  uses best efforts to prepare
such financial  statements as promptly as possible and provided further that the
sixty (60) day period referred to in the first sentence of this Section shall be
extended for a period equivalent to the delay.

     The Company  shall  furnish the Holder with a printer's  proof of Part I of
any  registration  statement  sufficiently  in advance  of its  filing  with the
Commission  to provide the Holder with a reasonable  opportunity  for review and
comment, which proof shall not be materially different in content from Part I of
the registration  statement as filed. In addition,  the Company shall furnish to
the  Holder,  promptly  after the  filing  thereof,  a copy of any  registration
statement as filed with the Commission and any amendments thereto,  including if
requested,  copies of any  exhibits  and  consents  filed  therewith  and of any
exhibits  incorporated  therein  by  reference,  and  shall  not  circulate  any
preliminary  prospectus  until  five (5) days  after a copy of the same has been
furnished to the Holder.  In addition,  the Company  shall furnish the Holder as
many copies of any prospectuses (and of any preliminary, amended or supplemented
prospectuses) in connection with such  registration as the Holder may reasonably
request.

2.Definitions.  As used  herein,  unless the  context  otherwise  requires,  the
following terms have the following respective meanings:

     Merger Agreement: As defined in Section 1 of this Agreement.

     Closing Date: As defined in Section 3 of the Merger Agreement.


                                       6
<PAGE>

     Commission:  The  Securities  and Exchange  Commission or any other Federal
agency at the time administering the Securities Act.

     Common Stock: The common stock, $0.01 par value, of the Company.

     Company: As defined in the introductory paragraph of this Agreement.

     Holder: As defined in the introductory paragraph to this Agreement.

     Person:  A corporation,  an association,  a partnership,  an  organization,
business,  an individual,  a governmental or political  subdivision thereof or a
governmental agency.

     Registrable  Shares or  Registrable  Securities:  (a) Any  shares of Common
Stock  received  by  Holder  pursuant  to the  Merger  Agreement,  and  (b)  any
additional  shares of Common Stock receivable or received by the Holder upon the
payment of stock  dividends  thereon and (c) any  securities  issued or issuable
with respect to the Common Stock referred to in the foregoing subdivision by way
of stock dividend or stock split or in connection  with a combination of shares,
recapitalization,  merger,  consolidation or other  reorganization or otherwise,
excepting  any of the  aforementioned  shares  which,  in the  opinion of Amon &
Sabatini (or if such firm is not counsel to the Company, counsel to the Holder),
may at the time of proposed sale or registration be sold pursuant to Rule 144(k)
of the  Securities  Act or any  exemption to the same effect which  permits such
shares to be freely sold.  Any particular  Registrable  Shares shall cease to be
Registrable Shares when (i) a registration statement with respect to the sale of
such  securities  shall have become  effective under the Securities Act and such
securities  shall have been  disposed of in  accordance  with such  registration
statement,  (ii) they may be distributed to the public  pursuant to Rule 144 (or
any successor  provision)  under the Securities  Act, or (iii) three years shall
have expired since the Closing Date.

     Registration  Expenses:  All expenses incident to the Company's performance
of  or  compliance  with  Section  2,   including,   without   limitation,   all
registration,  filing and National Association of Securities Dealers, Inc. fees,
all fees and expenses of complying  with  securities or blue sky laws,  all word
processing,  duplicating and printing expenses, messenger and delivery expenses,
the fees and  disbursement  of counsel for the  Company  and of its  independent
public  accountants any fees and disbursements of underwriters  customarily paid
by issuers of securities,  but excluding underwriting discounts and commissions,
transfer  taxes,  if any  and  fees  and  disbursements  of  legal  counsel  and
accountants, if any, retained by the Holders.

     Request:  The act of the Holder to either demand or request registration by
the Company of either all or any portion thereof of his Registrable Shares.

     Securities Act: The Securities Act of 1933, or any similar Federal statute,
and the rules and regulations of the Commission  thereunder,  all as of the same
shall be in  effect at the  time.  References  to a  particular  section  of the
Securities Act of 1933 shall include a reference to the comparable  section,  if
any, of any such similar Federal statute.


                                       7
<PAGE>

3.Rule 144. The Company shall timely file the reports required to be filed by it
under the  Securities  Exchange  Act of 1934  (including  but not limited to the
reports  under  Sections  13  and  15(d)  of the  Exchange  Act  referred  to in
subparagraph  (c)(1) of Rule 144 adopted by the Commission  under the Securities
Act) and the rules and regulations adopted by the Commission thereunder and will
take such  further  action as any Holder of  Registrable  Shares may  reasonably
request,  all to the extent  required from time to time to enable such Holder to
sell Registrable Shares without registration under the Securities Act within the
limitation of the exemptions  provided by (a) Rule 144 under the Securities Act,
as such  Rule may be  amended  from  time to time,  or (b) any  similar  rule or
regulation hereafter adopted by the Commission.  Upon the request of the Holder,
the Company will deliver to such Holder a written statement as to whether it has
complied with such requirements.

4.Amendments  and  Waivers.  This  Agreement  may be  amended  only  by  written
instrument signed by the parties hereto.

5.Nominees for Beneficial  Owners. In the event that any Registrable  Shares are
held by a nominee for the beneficial owner thereof, the beneficial owner thereof
may, at his election,  be treated as the Holder of such  Registrable  Shares for
purposes of any request or other action by any Holder or the Holders pursuant to
this Agreement. If the beneficial owner of any Registrable Shares so elects, the
Company may require  assurance  reasonably  satisfactory  to it of such  owner's
beneficial ownership of such Registrable Shares.

6.Notices.  Any notice or other communication  required or permitted to be given
hereunder  shall be  deemed to have been  given if  delivered,  or five (5) days
after mailing by certified or registered mail, return receipt  requested,  first
class  postage  prepaid,  or one  business  day  after  the time  dispatched  by
telecopy; in every case addressed as follows:

(a)If to the Company:
                        FastComm Communications Corporation
                        45472 Holiday Drive
                        Sterling, Virginia 20166
                        Attn: Mark H. Rafferty

(b)If to a Holder:
                        3332 Dogwood Lane
                        Duluth, Georgia 30136

or at such  address as the party  addressed  may from time to time  designate in
writing to the other  parties in like manner.  Any  communication  dispatched by
telecopy shall be confirmed by letter.

7.Indemnification.  The Company and the Holder agree to indemnify  each other on
the terms and conditions set forth below:

(a)Indemnification  by the Company. The Company will indemnify and hold harmless
the Holder and each underwriter  employed by the Holder (including any broker or
dealer  through  whom the  shares  may be sold)  and each  person,  if any,  who
controls the Holder or any such underwriter  within the meaning of Section 15 of
the Act from and against any and all losses,


                                       8
<PAGE>

claims, damages, expenses or liabilities, joint or several, to which they or any
of them may become subject under the Act or under any other statute or at common
law or otherwise, including the Blue Sky laws of the various jurisdictions, and,
except as  hereinafter  provided,  will  reimburse  the  Holder  and each of the
underwriters  and each such controlling  person,  if any, for any legal or other
expenses  reasonably  incurred  by  them  or  any of  them  in  connection  with
investigating  or  defending  any  actions  whether  or  not  resulting  in  any
liability,  insofar as such losses, claims,  damages,  expenses,  liabilities or
actions arise out of or are based upon any untrue  statement of a material fact,
or omission to state a material fact required to be stated  therein or necessary
in  order  to make the  statements  therein  not  misleading,  contained  in any
registration statement,  preliminary or amended prospectus or any prospectus (or
any  registration  statement  or  prospectus  as from  time to time  amended  or
supplemented  by the Company)  which the Company  shall file  pursuant to either
Sections 2.1 or 2.2 hereof, unless such untrue statement or omission was made in
such registration  statement,  preliminary or amended preliminary  prospectus or
prospectus  (or any  registration  statement or  prospectus as from time to time
amended or  supplemented by the Company) in reliance upon and in conformity with
information furnished in writing to the Company by the Holder or any underwriter
employed by the Holder.  Promptly after receipt by the Holder or any underwriter
or any  person  controlling  the  Holder  or such  underwriter  of notice of the
commencement  of any action  (but in no event  later than ten (10) days prior to
the time any  notice of  appearance  or any  response  thereto is  required)  in
respect of which indemnity may be sought against the Company, the Holder or such
underwriter,  as the case may be,  shall  notify  the  Company in writing of the
commencement  thereof,  and, subject to the provisions  hereinafter  stated, the
Company  shall assume the defense of such action  (including  the  employment of
counsel) insofar as such action shall relate to any alleged liability in respect
of which  indemnity  may be  sought  against  the  Company.  The  Holder  or any
underwriter  or any such  controlling  person  shall  have the  right to  employ
separate  counsel in any such action and to participate in the defense  thereof,
but the fees and  expenses  of such  counsel  shall not be at the expense of the
Company unless the employment of such counsel has been  specifically  authorized
by it. The Company shall not be liable to indemnify  any person,  as required by
this  Section,  for any  settlement  of any such  action  effected  without  its
consent,  nor shall it be  liable to  indemnify  any  person  unless it shall be
notified  of the  commencement  of any action  within the time limits and as set
forth above.  

(b)Indemnification  by the Holder.  The Holder will  indemnify and hold harmless
the Company, each of its directors and officers who have signed the registration
statement and each person,  if any, who controls the Company with the meaning of
Section 15 of the Act from and  against  any and all  losses,  claims,  damages,
expenses  or  liabilities,  joint or  several,  to which they or any of them may
become  subject under the Securities Act or under any other statute or at common
law or otherwise, including the Blue Sky laws of the various jurisdictions,  and
except  as  hereinafter  provided,  will  reimburse  the  Company  and each such
director,  officer  or  controlling  person  for any  legal  or  other  expenses
reasonably  incurred by them or any of them in connection with  investigating or
defending any actions whether or not resulting in any liability, insofar as such
losses, claims,  damages,  expenses,  liabilities or actions arise out of or are
based upon any untrue  statement  of  material  fact,  or an  omission  to state
therein a material fact  required to be stated  therein or necessary in order to
make the  statements  therein  not  misleading,  contained  in any  registration
statement,   any  preliminary  or  amended  preliminary  prospectus  or  in  any
prospectus  (or the  registration  statement or  prospectus as from time to time
amended or  supplemented)  which the Company shall file pursuant to Sections 2.1
or 2.2 hereof,


                                       9
<PAGE>

but only insofar as any such statement or omission was made in reliance upon and
in conformity with information furnished in writing to the Company by the Holder
or any underwriter  employed by the Holder.  Promptly after receipt of notice of
the  commencement  of any  action in respect  of which  indemnity  may be sought
against  the Holder  (but in no event later than ten (10) days prior to the time
any notice of appearance or any response  thereto is required) the Company shall
notify the Holder in writing of the commencement  thereof, and the Holder shall,
subject to the provisions  hereinafter stated, assume the defense of such action
(including the employment of counsel) insofar as such action shall relate to any
alleged  liability  in  respect of which  indemnity  may be sought  against  the
Holder. The Company and each director,  officer or controlling person shall have
the right to employ  separate  counsel in any such action and to  participate in
the defense  thereof,  but the fees and expenses of such counsel shall not be at
the  expense  of the Holder  unless  the  employment  of such  counsel  has been
specifically  authorized by him. The Holder shall not be liable to indemnify any
person,  as  required by this  Section,  for any  settlement  of any such action
effected without the Holder's  consent,  nor shall he be liable to indemnify any
person unless he shall be notified of the  commencement of any action within the
time limits and as set forth above. 

8.Miscellaneous.

(a)Assignment.  This Agreement shall be binding upon and inure to the benefit of
and be  enforceable by the parties  hereto and their  respective  successors and
assigns. In addition,  and whether or not any express assignment shall have been
made, the provisions of this Agreement  which are for the benefit of the parties
hereto other than the Company  shall also be for the benefit of and  enforceable
by any subsequent  Holder of any  Registrable  Shares.  Any assignment  pursuant
hereto by either  party  shall be  consented  in writing,  and any such  written
consent  shall not be  unreasonably  withheld  by either  party.  

(b)Descriptive  Headings.  The descriptive  headings of the several sections and
paragraphs of this Agreement are inserted for reference only and shall not limit
or otherwise affect the meaning hereof.

(c)Governing  Law. This Agreement  shall be construed and enforced in accordance
with,  and the  rights of the  parties  shall be  governed  by,  the laws of the
Commonwealth  of Virginia  without  reference to the  principles of conflicts of
laws.

(d)Counterparts.  This Agreement may be executed simultaneously in any number of
counterparts,  and may be executed in any number of counterparts,  each of which
shall be deemed an original, but all such counterparts shall together constitute
one and the same instrument.  

(e)Entire   Agreement.   This  Agreement   embodies  the  entire  agreement  and
understanding between the Company and each other party hereto and supersedes all
prior agreements and understandings related to the subject matter hereof.

                      [SIGNATURES BEGIN ON FOLLOWING PAGE]


                                       10
<PAGE>

     IN WITNESS  WHEREOF,  the parties have caused this Agreement to be executed
and delivered as of the date first above written.

                                     "THE COMPANY"

                                     FASTCOMM COMMUNICATIONS CORPORATION


                                         By:________________________________

                                                       Name:________________
 
                                                       Title:_______________


                                     "THE HOLDER"

                                         ____________________________________
                                         Richard L. Apel      C

                                                                              



 
                                                                      EXHIBIT C
                                                                          to
                                                             Securities Purchase
                                                                       Agreement


                          REGISTRATION RIGHTS AGREEMENT

     REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of April 9, 1997
by and among FASTCOMM COMMUNICATIONS  CORPORATION, a corporation organized under
the laws of the  Commonwealth of Virginia,  with  headquarters  located at 45472
Holiday Drive,  Sterling,  Virginia 20166 (the  "Company"),  and the undersigned
(together with affiliates, the "Initial Investors").

     WHEREAS:

     A. In  connection  with the  Securities  Purchase  Agreement  of even  date
herewith by and between the Company and the Initial  Investors (the  "Securities
Purchase Agreement"),  the Company has agreed, upon the terms and subject to the
conditions  contained  therein,  to issue and sell to the Initial  Investors (i)
convertible debentures  ("Debentures") in the aggregate principal amount of Five
Million Dollars  ($5,000,000)  due April 9, 2001, which are convertible into (a)
(x) shares (the  "Conversion  Shares") of the Company's  common stock, par value
$.01 per share (the "Common Stock") and (y) warrants (the "Warrants") to acquire
shares of Common Stock (the "Warrant  Shares") or (b) if authorized by the Board
of Directors and/or the  shareholders of the Company,  shares of a to-be-created
class of Series A preferred stock of the Company (the "Preferred  Shares") which
are convertible into Conversion Shares and Warrants or (ii) if authorized by the
Board of Directors and/or the shareholders of the Company, Preferred Shares;

     B. To induce the Initial  Investors  to execute and deliver the  Securities
Purchase  Agreement,  the  Company  has agreed to provide  certain  registration
rights  under  the  Securities  Act of  1933,  as  amended,  and the  rules  and
regulations  thereunder,  or any similar  successor statute  (collectively,  the
"Securities Act"), and applicable state securities laws;

     NOW,  THEREFORE,  in consideration of the premises and the mutual covenants
contained  herein and other good and  valuable  consideration,  the  receipt and
sufficiency  of which are  hereby  acknowledged,  the  Company  and the  Initial
Investors hereby agree as follows:

     1. DEFINITIONS.

     a. As used in this Agreement,  the following terms shall have the following
meanings:


                                      
<PAGE>

          (i)  "Investors"  means the Initial  Investors and any  transferees or
assignees  who agree to become  bound by the  provisions  of this  Agreement  in
accordance with Section 9 hereof.

          (ii)  "register,"   "registered,"  and   "registration"   refer  to  a
registration  effected  by  preparing  and filing a  Registration  Statement  or
Statements in compliance  with the Securities Act and pursuant to Rule 415 under
the Securities Act or any successor rule providing for offering  securities on a
continuous  basis ("Rule 415"), and the declaration or ordering of effectiveness
of such  Registration  Statement by the United  States  Securities  and Exchange
Commission (the "SEC").

          (iii)  "Registrable  Securities"  means the Conversion  Shares and the
Warrant Shares  (including any Conversion Shares or Warrant Shares issuable with
respect to Conversion Default Payments under the Debentures and Preferred Shares
or with respect to any  prepayment or redemption of the  Debentures or Preferred
Shares) issued or issuable with respect to the Debentures,  the Preferred Shares
and the Warrants and any shares of capital  stock issued or issuable,  from time
to time (with any adjustments),  on or in exchange for or otherwise with respect
to any of the foregoing.

          (iv)  "Registration  Statement" means a registration  statement of the
Company under the Securities Act.

     b.  Capitalized  terms used herein and not otherwise  defined  herein shall
have the respective meanings set forth in the Securities Purchase Agreement.

     2. REGISTRATION.

     a. Mandatory  Registration.  The Company shall prepare, and, on or prior to
the date (the  "Filing  Date")  which is twenty  (20) days after the date of the
First Closing (as defined in the Securities Purchase  Agreement),  file with the
Securities and Exchange Commission ("SEC") a Registration  Statement on Form S-3
(or, if Form S-3 is not then available,  on such form of Registration  Statement
as is  then  available  to  effect  a  registration  of all  of the  Registrable
Securities (including,  without limitation,  the Registrable Securities issuable
with respect to any  Debentures or Preferred  Shares (or Warrants  issuable upon
conversion of either the Debentures or the Preferred  Shares) issuable  pursuant
to the  Securities  Purchase  Agreement  after  the First  Closing  thereunder),
subject to the  consent of the  Initial  Investors  (as  determined  pursuant to
Section  11(j)  hereof))  covering  the resale of at least  3,000,000  shares of
Registrable  Securities,  which Registration  Statement, to the extent allowable
under the Securities Act and the Rules  promulgated  thereunder  (including Rule
416),   shall  state  that  such   Registration   Statement   also  covers  such
indeterminate number of additional shares of Common Stock as may become issuable
upon  conversion of the Debentures and the Preferred  Shares and exercise of the
Warrants (i) to prevent dilution resulting from stock splits, stock dividends or
similar transactions or (ii) by reason of changes in the Conversion Price of the
Debentures and the Preferred Shares or the Exercise Price of the Warrants


                                       2
<PAGE>

in accordance with the terms thereof. The Registrable Securities included in the
Registration  Statement  shall be  allocated  to the  Investors  as set forth in
Section  11(k)  hereof.  The  Registration  Statement  (and  each  amendment  or
supplement thereto, and each request for acceleration of effectiveness  thereof)
shall be provided to (and subject to the approval of) the Initial  Investors and
their counsel prior to its filing or other submission.

     b.  Underwritten  Offering.  If any  offering  pursuant  to a  Registration
Statement pursuant to Section 2(a) hereof involves an underwritten offering, the
Investors who hold a majority in interest of the Registrable  Securities subject
to such underwritten offering, with the consent of the Initial Investors,  shall
have the right to select a total of one legal counsel to represent the Investors
and an investment  banker or bankers and manager or managers to  administer  the
offering, the identification of which investment banker or bankers or manager or
managers shall be subject to the Company's  prior written consent (which consent
shall not be unreasonably withheld).

     c.  Payments  by the  Company.  The Company  shall  cause the  registration
statement to become effective as soon as practicable, but in no event later than
the one hundred and  twentieth  (120th) day after the date of the First  Closing
(the "Registration Deadline"). If (i) the registration statement(s) covering the
Registrable  Securities  required to be filed by the Company pursuant to Section
2(a) hereof is not declared  effective by the SEC on or before the  Registration
Deadline or if, after the registration  statement has been declared effective by
the SEC, sales of all the  Registrable  Securities  (including  any  Registrable
Securities  required to be registered pursuant to Section 3(b) hereof) cannot be
made  pursuant to the  registration  statement (by reason of a stop order or the
Company's  failure  to update the  registration  statement  or any other  reason
outside the control of the  Investors) or (ii) the Common Stock is not listed or
included for quotation on the Nasdaq  National Market  ("Nasdaq"),  the New York
Stock  Exchange (the "NYSE") or the American  Stock Exchange (the "AMEX") at any
time after the Registration Deadline, then the Company will make payments to the
Investors in such amounts and at such times as shall be  determined  pursuant to
this Section 2(c) as partial  relief for the damages to the  Investors by reason
of any such  delay in or  reduction  of their  ability  to sell the  Registrable
Securities (which remedy shall not be exclusive of any other remedies  available
at law or in equity).  The Company shall pay to each Investor an amount equal to
the aggregate  principal  amount of the Debentures (and aggregate face amount of
the Preferred  Shares) held by such  Investor  (including,  without  limitation,
Debentures and Preferred Shares that have been converted into Conversion  Shares
and  Warrants  (including  Warrant  Shares)  then  held by such  Investor)  (the
"Aggregate  Principal  Amount"),  multiplied by one and one half percent (1.5%),
multiplied by the sum of (y) the number of months  (prorated for partial months)
after the Registration Deadline and prior to the date the Registration Statement
filed  pursuant  to Section  2(a) is declared  effective  by the SEC and (z) the
number of  months  (prorated  for  partial  months)  that  sales  cannot be made
pursuant to the registration statement after the Registration Statement has been
declared  effective or the Common Stock is not listed or included for  quotation
on Nasdaq,  the NYSE or AMEX;  provided,  however,  that the  aggregate  payment
pursuant to this  sentence  shall not exceed nine percent (9%) of the  Aggregate
Principal Amount; and provided,  further,  however, that there shall be excluded
from each such period any delays which are primarily attributable to (A) changes
(other  than  corrections  of  Company  mistakes  with  respect  to  information
previously provided by the


                                       3
<PAGE>

Investors)  required by the  Investors  or  Susquehanna  Financial  Group,  Inc.
("SFG") in the  Registration  Statement with respect to information  relating to
the Investors or SFG, respectively,  including,  without limitation,  changes to
the  plan  of  distribution  or  (B)  a  change  in  the  policies,  procedures,
interpretations,  positions,  practices  or rules of the SEC made  public  after
March 6, 1997. (For example,  if the Registration  Statement is not effective by
the Registration  Deadline, the Company would pay $15,000 for each $1,000,000 of
Aggregate  Principal  Amount until the date the Registration  Statement  becomes
effective (but not more than $450,000 in the  aggregate.)  Such amounts shall be
paid in cash or, at each Investor's option, may be convertible into Common Stock
and  Warrants  at the  "Conversion  Price" (as defined in the  Debentures).  Any
shares of Common Stock issued upon  conversion of such amounts (or upon exercise
of such Warrants) shall be Registrable  Securities.  If the Investor  desires to
convert the amounts due hereunder into Registrable Securities it shall so notify
the Company in writing  within two (2)  business  days of the date on which such
amounts  are first  payable  in cash and such  amounts  shall be so  convertible
(pursuant to the mechanics  set forth under Article IV of the  Debentures or the
comparable article of the Certificate of Designation in respect of the Preferred
Shares (the "Certificate of Designation")), beginning on the last day upon which
the  cash  amount  would  otherwise  be due in  accordance  with  the  following
sentence.  Payments of cash  pursuant  hereto shall be made within five (5) days
after the end of each period that gives rise to such obligation,  provided that,
if any such period  extends for more than  thirty  (30) days,  interim  payments
shall be made for each such thirty (30) day period.

     d. Piggy-Back Registrations.  If at any time prior to the expiration of the
Registration Period (as hereinafter defined) the Company shall file with the SEC
a Registration Statement relating to a firm commitment underwritten offering for
its own account or the account of others under the  Securities Act of any of its
equity  securities (other than on Form S-4 or Form S-8 or their then equivalents
relating  to equity  securities  to be  issued  solely  in  connection  with any
acquisition  of  any  entity  or  business  or  equity  securities  issuable  in
connection with stock option or other employee  benefit plans) the Company shall
send to each Investor who is entitled to registration  rights under this Section
2(d) written notice of such determination and, if within fifteen (15) days after
the date of such notice, such Investor shall so request in writing,  the Company
shall include in such Registration  Statement all or any part of the Registrable
Securities  such  Investor  requests  to  be  registered,  except  that  if,  in
connection with any underwritten  public offering for the account of the Company
the managing  underwriter(s)  thereof shall impose a limitation on the number of
shares of Common  Stock  which may be  included  in the  Registration  Statement
because, in such  underwriter(s)'  judgment,  marketing or other factors dictate
such limitation is necessary to facilitate public distribution, then the Company
shall be obligated to include in such  Registration  Statement only such limited
portion of the  Registrable  Securities  with respect to which such Investor has
requested  inclusion hereunder as the underwriter shall permit. Any exclusion of
Registrable  Securities  shall be made pro rata among the  Investors  seeking to
include  Registrable  Securities,  in  proportion  to the number of  Registrable
Securities sought to be included by such Investors;  provided, however, that the
Company  shall not exclude  any  Registrable  Securities  unless the Company has
first excluded all outstanding securities, the holders of which are not entitled
to  inclusion  of such  securities  in such  Registration  Statement  or are not
entitled to pro rata inclusion with the  Registrable  Securities;  and provided,
further, however, that, after giving effect to the immediately preceding


                                       4
<PAGE>

proviso,  any exclusion of  Registrable  Securities  shall be made pro rata with
holders of other  securities  having the right to include such securities in the
Registration Statement other than holders of securities entitled to inclusion of
their securities in such Registration Statement by reason of demand registration
rights.  No right to registration of Registrable  Securities  under this Section
2(d) shall be construed to limit any  registration  required  under Section 2(a)
hereof.  If an  offering  in  connection  with which an  Investor is entitled to
registration  under this Section  2(d) is an  underwritten  offering,  then each
Investor  whose  Registrable   Securities  are  included  in  such  Registration
Statement shall,  unless  otherwise  agreed by the Company,  offer and sell such
Registrable Securities in an underwritten offering using the same underwriter or
underwriters and, subject to the provisions of this Agreement, on the same terms
and  conditions  as other shares of Common Stock  included in such  underwritten
offering.

     e.  Eligibility  for Form S-3. The Company  represents and warrants that it
meets the  requirements  for the use of Form S-3 for registration of the sale by
the Initial  Investors and any other Investor of the Registrable  Securities and
the Company shall file all reports  required to be filed by the Company with the
SEC in a timely  manner so as to maintain such  eligibility  for the use of Form
S-3.

     3. OBLIGATIONS OF THE COMPANY.

     In connection  with the  registration of the  Registrable  Securities,  the
Company shall have the following obligations:

     a.  The  Company  shall  prepare   promptly  and  file  with  the  SEC  the
Registration  Statement  required by Section 2(a),  and cause such  Registration
Statement  relating to  Registrable  Securities  to become  effective as soon as
practicable  after such  filing,  but in no event  later  than the  Registration
Deadline,  and keep the Registration Statement effective pursuant to Rule 415 at
all times  until such date as is the earlier of (i) the date on which all of the
Registrable Securities have been sold and (ii) the date on which the Registrable
Securities (in the reasonable  opinion of counsel to the Initial  Investors) may
be  immediately  sold to the  public  without  registration  (the  "Registration
Period"),  which Registration Statement (including any amendments or supplements
thereto and  prospectuses  contained  therein and all documents  incorporated by
reference  therein) shall not contain any untrue statement of a material fact or
omit to state a material  fact  required to be stated  therein,  or necessary to
make the statements therein not misleading.

     b.  The  Company  shall  prepare  and file  with  the SEC  such  amendments
(including   post-effective   amendments)  and  supplements  to  a  Registration
Statement and the prospectus used in connection with the Registration  Statement
as may be necessary to keep the  Registration  Statement  effective at all times
during the  Registration  Period,  and,  during  such  period,  comply  with the
provisions  of  the  Securities  Act  with  respect  to the  disposition  of all
Registrable  Securities  of the Company  covered by the  Registration  Statement
until such time as all of such  Registrable  Securities have been disposed of in
accordance  with the intended  methods of  disposition  by the seller or sellers
thereof as set forth in the Registration Statement. In the event the number of


                                       5
<PAGE>

shares available under a Registration Statement filed pursuant to this Agreement
is,  for any  three (3)  consecutive  trading  days (the last of such  three (3)
trading days being the "Registration  Trigger Date"),  insufficient to cover one
hundred  thirty-five  percent  (135%) of the  Registrable  Securities  issued or
issuable upon conversion of the Debentures and the Preferred Shares and exercise
of the Warrants held by any Investor,  the Company shall amend the  Registration
Statement,  or file a new  Registration  Statement (on the short form  available
therefor, if applicable),  or both, so as to cover two hundred percent (200%) of
the Registrable Securities issued or issuable to such Investor, in each case, as
soon as  practicable,  but in any  event  within  fifteen  (15)  days  after the
Registration  Trigger  Date (based on the market  price of the Common  Stock and
other  relevant  factors on which the Company  reasonably  elects to rely).  The
Company shall cause such amendment and/or new  Registration  Statement to become
effective as soon as practicable  following the filing thereof. In the event the
Company fails to obtain the  effectiveness  of any such  Registration  Statement
within ninety (90) days after a Registration  Trigger Date,  each Investor shall
thereafter have the option, exercisable in whole or in part at any time and from
time to time by  delivery  of a written  notice to the  Company  (a  "Redemption
Notice"),  to  require  the  Company  to  purchase  for cash,  a portion  of the
Investor's  Debentures and Preferred Shares such that the total number of shares
of Common Stock issuable to such Investor upon  conversion of its Debentures and
Preferred  Shares and  exercise  of its  Warrants  does not  exceed  135% of the
Registrable  Securities  issued or issuable upon  conversion of such  Investor's
Debentures and Preferred  Shares and exercise of such Investor's  Warrants.  The
purchase price per Debenture shall be equal to the Default Amount (as defined in
Article VI.A of the  Debentures)  therefor and the purchase  price per Preferred
Share  shall  be  equal  to  the  Redemption  Amount  therefor  provided  in the
Certificate of  Designation.  If the  Corporation  fails to purchase any of such
Debentures  or Preferred  Shares within five (5) business days after its receipt
of a Redemption  Notice,  then such  Investor  shall be entitled to the remedies
provided in Article VIII.C of the  Debentures or the  comparable  article of the
Certificate of Designation, as applicable.

     c. The Company shall furnish to each Investor whose Registrable  Securities
are included in the  Registration  Statement  and its legal counsel (i) promptly
after the same is  prepared  and  publicly  distributed,  filed with the SEC, or
received  by the  Company,  one  copy  of the  Registration  Statement  and  any
amendment thereto, each preliminary prospectus and prospectus and each amendment
or supplement thereto,  and, in the case of the Registration  Statement referred
to in Section  2(a),  each letter  written by or on behalf of the Company to the
SEC or the staff of the SEC, and each item of correspondence from the SEC or the
staff of the SEC, in each case relating to such  Registration  Statement  (other
than any portion,  if any,  thereof  which  contains  information  for which the
Company has sought confidential treatment),  and (ii) such number of copies of a
prospectus,   including  a  preliminary  prospectus,   and  all  amendments  and
supplements  thereto and such other  documents as such  Investor may  reasonably
request in order to facilitate  the  disposition of the  Registrable  Securities
owned by such Investor.

     d. The Company shall use reasonable efforts to (i) register and qualify the
Registrable  Securities  covered by the Registration  Statement under such other
securities or "blue sky" laws of such jurisdictions in the United States as each
Investor who holds Registrable Securities


                                       6
<PAGE>

being offered reasonably requests,  (ii) prepare and file in those jurisdictions
such amendments  (including  post-effective  amendments) and supplements to such
registrations   and   qualifications   as  may  be  necessary  to  maintain  the
effectiveness  thereof  during the  Registration  Period,  (iii) take such other
actions as may be necessary to maintain such registrations and qualifications in
effect at all times  during  the  Registration  Period,  and (iv) take all other
actions reasonably necessary or advisable to qualify the Registrable  Securities
for sale in such jurisdictions; provided, however, that the Company shall not be
required in connection  therewith or as a condition thereto to (a) qualify to do
business in any jurisdiction where it would not otherwise be required to qualify
but for this Section 3(d),  (b) subject  itself to general  taxation in any such
jurisdiction,  (c) file a general  consent  to  service  of  process in any such
jurisdiction,  (d) provide any undertakings that cause the Company undue expense
or burden,  or (e) make any change in its charter or bylaws,  which in each case
the Board of  Directors  of the  Company  determines  to be contrary to the best
interests of the Company and its stockholders.

     e. In the  event the  Investors  who hold a  majority  in  interest  of the
Registrable  Securities being offered in an offering select underwriters for the
offering,  the Company  shall enter into and  perform its  obligations  under an
underwriting  agreement,  in  usual  and  customary  form,  including,   without
limitation,  customary  indemnification and contribution  obligations,  with the
underwriters of such offering.

     f. As promptly  as  practicable  after  becoming  aware of such event,  the
Company shall notify each  Investor of the happening of any event,  of which the
Company  has  knowledge,  as a result of which the  prospectus  included  in the
Registration  Statement,  as then in effect,  includes an untrue  statement of a
material fact or omission to state a material fact required to be stated therein
or necessary to make the  statements  therein not  misleading,  and use its best
efforts  promptly  to prepare a  supplement  or  amendment  to the  Registration
Statement to correct such untrue statement or omission,  and deliver such number
of copies of such  supplement or amendment to each Investor as such Investor may
reasonably request.

     g. The  Company  shall use  reasonable  commercial  efforts to prevent  the
issuance  of  any  stop  order  or  other   suspension  of  effectiveness  of  a
Registration  Statement,  and,  if  such an  order  is  issued,  to  obtain  the
withdrawal of such order at the earliest  practicable  moment and to notify each
Investor  who holds  Registrable  Securities  being sold (or, in the event of an
underwritten  offering, the managing underwriters) of the issuance of such order
and the resolution thereof.

     h. The  Company  shall  permit a single firm of counsel  designated  by the
Initial  Investors to review the  Registration  Statement and all amendments and
supplements  thereto a reasonable  period of time prior to their filing with the
SEC, and not file any document to which such counsel reasonably objects.

     i. The Company shall make  generally  available to its security  holders as
soon as  practical,  but not later than  ninety (90) days after the close of the
period  covered  thereby,  an earnings  statement  (in form  complying  with the
provisions of Rule 158 under the Securities Act)


                                       7
<PAGE>

covering a  twelve-month  period  beginning  not later than the first day of the
Company's  fiscal quarter next following the effective date of the  Registration
Statement.

     j. At the request of any Investor,  the Company shall furnish,  on the date
of effectiveness of the Registration  Statement (i) an opinion, dated as of such
date, from counsel  representing  the Company  addressed to the Investors and in
form,  scope and substances as is customarily  given in an  underwritten  public
offering  and (ii) in the case of an  underwriting,  a letter,  dated such date,
from  the  Company's  independent  certified  public  accountants  in  form  and
substance as is customarily given by independent certified public accountants to
underwriters in an underwritten public offering,  addressed to the underwriters,
if any, and the Investors.

     k. The Company  shall make  available  for  inspection by (i) any Investor,
(ii)  any  underwriter   participating  in  any  disposition   pursuant  to  the
Registration Statement,  (iii) one firm of attorneys and one firm of accountants
or other  agents  retained  by the  Investors,  and  (iv) one firm of  attorneys
retained by all such underwriters (collectively, the "Inspectors") all pertinent
financial and other records, and pertinent corporate documents and properties of
the  Company  (collectively,  the  "Records"),  as  shall be  reasonably  deemed
necessary  by each  Inspector  to enable  each  Inspector  to  exercise  its due
diligence  responsibility,  and  cause the  Company's  officers,  directors  and
employees to supply all information  which any Inspector may reasonably  request
for purposes of such due diligence;  provided,  however, that each Inspector and
any Investor  having access to  information,  shall hold in confidence and shall
not  make  any  disclosure  (except  to an  Investor)  of any  Record  or  other
information which the Company  determines in good faith to be confidential,  and
of which determination the Inspectors are so notified, unless (a) the disclosure
of such Records is necessary to avoid or correct a  misstatement  or omission in
any Registration Statement,  (b) the release of such Records is ordered pursuant
to a  subpoena  or other  order  from a court or  government  body of  competent
jurisdiction,  or (c) the  information  in such Records has been made  generally
available  to the public  other than by  disclosure  in violation of this or any
other agreement.  The Company shall not be required to disclose any confidential
information  in such Records to any  Inspector  until and unless such  Inspector
shall  have  entered  into  confidentiality  agreements  (in form and  substance
satisfactory   to  the  Company)   with  the  Company   with  respect   thereto,
substantially  in the form of this Section 3(k).  Each  Investor  agrees that it
shall,  upon learning that disclosure of such Records is sought in or by a court
or  governmental  body of competent  jurisdiction  or through other means,  give
prompt notice to the Company and allow the Company, at its expense, to undertake
appropriate  action to prevent  disclosure  of, or to obtain a protective  order
for, the Records  deemed  confidential.  Nothing herein shall be deemed to limit
the  Investor's  ability to sell  Registrable  Securities  in a manner  which is
otherwise consistent with applicable laws and regulations.

     l. The Company  shall hold in  confidence  and not make any  disclosure  of
information concerning an Investor provided to the Company unless (i) disclosure
of such  information  is necessary  to comply with  federal or state  securities
laws, (ii) the disclosure of such information is necessary to avoid or correct a
misstatement  or omission in any  Registration  Statement,  (iii) the release of
such  information is ordered  pursuant to a subpoena or other order from a court
or governmental body of competent  jurisdiction,  (iv) such information has been
made


                                       8
<PAGE>

generally  available to the public other than by disclosure in violation of this
or any other agreement, or (v) such Investor consents to the form and content of
any such  disclosure.  The Company  agrees  that it shall,  upon  learning  that
disclosure of such information concerning an Investor is sought in or by a court
or  governmental  body of competent  jurisdiction  or through other means,  give
prompt notice to such Investor  prior to making such  disclosure,  and allow the
Investor,  at its expense, to undertake appropriate action to prevent disclosure
of, or to obtain a protective order for, such information.

     m. The Company shall use reasonable  commercial efforts either to (i) cause
all the  Registrable  Securities  covered by the  Registration  Statement  to be
listed on the NYSE or the AMEX or another  national  securities  exchange and on
each additional  national  securities  exchange on which  securities of the same
class or series issued by the Company are then listed, if any, if the listing of
such Registrable  Securities is then permitted under the rules of such exchange,
or (ii) secure the designation and quotation,  of all the Registrable Securities
covered by the  Registration  Statement on the Nasdaq and,  without limiting the
generality  of the  foregoing,  to arrange  for or  maintain at least two market
makers to register with the National  Association  of Securities  Dealers,  Inc.
("NASD") as such with respect to such Registrable Securities.

     n. The Company shall provide a transfer agent and registrar, which may be a
single entity, for the Registrable  Securities not later than the effective date
of the Registration Statement.

     o. The Company shall  cooperate  with the  Investors  who hold  Registrable
Securities being offered and the managing  underwriter or underwriters,  if any,
to facilitate the timely  preparation and delivery of certificates  (not bearing
any  restrictive  legends)  representing  Registrable  Securities  to be offered
pursuant to the  Registration  Statement and enable such  certificates  to be in
such denominations or amounts,  as the case may be, as the managing  underwriter
or underwriters,  if any, or the Investors may reasonably request and registered
in such  names as the  managing  underwriter  or  underwriters,  if any,  or the
Investors may request,  and, within three (3) business days after a Registration
Statement which includes Registrable Securities is ordered effective by the SEC,
the Company shall cause legal counsel  selected by the Company to deliver to the
transfer  agent for the  Registrable  Securities  (with copies to the  Investors
whose  Registrable  Securities are included in such  Registration  Statement) an
opinion of such counsel in the form attached hereto as Exhibit 1.

     p. At the request of any Investor,  the Company shall prepare and file with
the SEC such amendments (including post-effective amendments) and supplements to
a  Registration  Statement  and the  prospectus  used  in  connection  with  the
Registration  Statement  as may be  necessary  in  order to  change  the plan of
distribution set forth in such Registration Statement.

     4. OBLIGATIONS OF THE INVESTORS.

     In connection  with the  registration of the  Registrable  Securities,  the
Investors shall have the following obligations:


                                       9
<PAGE>

     a. It shall be a condition  precedent to the  obligations of the Company to
complete  the  registration  pursuant  to this  Agreement  with  respect  to the
Registrable Securities of a particular Investor that such Investor shall furnish
to the Company such information  regarding  itself,  the Registrable  Securities
held by it and the intended method of disposition of the Registrable  Securities
held by it as shall be reasonably  required to effect the  registration  of such
Registrable  Securities and shall execute such documents in connection with such
registration as the Company may reasonably  request. At least three (3) business
days prior to the first anticipated  filing date of the Registration  Statement,
the Company shall notify each Investor of the information  the Company  requires
from each such Investor.

     b.  Each  Investor,  by  such  Investor's  acceptance  of  the  Registrable
Securities,  agrees to cooperate with the Company as reasonably requested by the
Company  in  connection  with the  preparation  and  filing of the  Registration
Statement hereunder, unless such Investor has notified the Company in writing of
such  Investor's  election  to  exclude  all  of  such  Investor's   Registrable
Securities from the Registration Statement.

     c. In the event Investors holding a majority in interest of the Registrable
Securities  being  offered  determine to engage the services of an  underwriter,
each Investor agrees to enter into and perform such Investor's obligations under
an  underwriting  agreement,  in usual and customary  form,  including,  without
limitation,  customary  indemnification and contribution  obligations,  with the
managing  underwriter  of such  offering  and take  such  other  actions  as are
reasonably  required in order to expedite or facilitate  the  disposition of the
Registrable Securities, unless such Investor has notified the Company in writing
of such  Investor's  election  to  exclude  all of such  Investor's  Registrable
Securities from the Registration Statement.

     d. Each Investor  agrees that,  upon receipt of any notice from the Company
of the  happening  of any event of the kind  described  in Section 3(f) or 3(g),
such Investor will immediately discontinue disposition of Registrable Securities
pursuant to the  Registration  Statement  covering such  Registrable  Securities
until  such  Investor's  receipt of the  copies of the  supplemented  or amended
prospectus  contemplated  by Section  3(f) or 3(g) and,  if so  directed  by the
Company,  such  Investor  shall  deliver to the  Company  (at the expense of the
Company) or destroy (and deliver to the Company a  certificate  of  destruction)
all  copies in such  Investor's  possession,  of the  prospectus  covering  such
Registrable Securities current at the time of receipt of such notice.

     e. No Investor may participate in any underwritten  registration  hereunder
unless such Investor (i) agrees to sell such Investor's  Registrable  Securities
on the basis provided in any  underwriting  arrangements  in usual and customary
form   entered   into  by  the  Company,   (ii)   completes   and  executes  all
questionnaires,  powers of attorney,  indemnities,  underwriting  agreements and
other  documents  reasonably  required  under  the  terms  of such  underwriting
arrangements,  and (iii)  agrees to pay its pro rata  share of all  underwriting
discounts  and  commissions  and any expenses in excess of those  payable by the
Company pursuant to Section 5 below.


                                       10
<PAGE>

     5. EXPENSES OF REGISTRATION.

     All reasonable expenses, other than underwriting discounts and commissions,
incurred in connection with registrations, filings or qualifications pursuant to
Sections 2 and 3, including,  without limitation, all registration,  listing and
qualifications fees, printers and accounting fees and the fees and disbursements
of counsel for the Company,  shall be borne by the Company.  The Investors shall
be  responsible  for all cost  incurred  by them or  their  advisors  and  other
professionals (including,  without limitation,  their legal counsel, accountants
and investment bankers) in connection with any registration hereunder.

     6. INDEMNIFICATION.

     In the event any  Registrable  Securities  are  included in a  Registration
Statement under this Agreement:

     a. To the  extent  permitted  by law,  the  Company  will  indemnify,  hold
harmless and defend (i) each Investor who holds such Registrable Securities, and
(ii) the directors,  officers,  partners,  members,  employees,  agents and each
person  who  control  any  Investor  within  the  meaning  of  Section 15 of the
Securities Act or Section 20 of the Securities  Exchange Act of 1934, as amended
(the "Exchange Act"), if any, (each, an "Indemnified Person"), against any joint
or several  losses,  claims,  damages,  liabilities  or expenses  (collectively,
together  with  actions,   proceedings   or  inquiries  by  any   regulatory  or
self-regulatory  organization,  whether  commenced  or  threatened,  in  respect
thereof,  "Claims")  to which any of them may  become  subject  insofar  as such
Claims  arise out of or are based  upon:  (i) any  untrue  statement  or alleged
untrue statement of a material fact in a Registration  Statement or the omission
or alleged  omission to state  therein a material  fact required to be stated or
necessary  to make the  statements  therein  not  misleading,  (ii)  any  untrue
statement  or alleged  untrue  statement  of a material  fact  contained  in any
preliminary  prospectus if used prior to the effective date of such Registration
Statement, or contained in the final prospectus (as amended or supplemented,  if
the Company files any amendment  thereof or supplement  thereto with the SEC) or
the omission or alleged omission to state therein any material fact necessary to
make the statements made therein,  in light of the circumstances under which the
statements therein were made, not misleading,  or (iii) any violation or alleged
violation by the Company of the Securities Act, the Exchange Act, any other law,
including,  without  limitation,  any  state  securities  law,  or any  rule  or
regulation  thereunder  relating  to  the  offer  or  sale  of  the  Registrable
Securities  (the  matters in the  foregoing  clauses  (i) through  (iii)  being,
collectively,  "Violations").  Subject to the  restrictions set forth in Section
6(c) with respect to the number of legal  counsel,  the Company shall  reimburse
the Investors and each such underwriter or controlling person,  promptly as such
expenses are incurred and are due and payable,  for any reasonable legal fees or
other reasonable  expenses incurred by them in connection with  investigating or
defending  any such Claim.  Notwithstanding  anything to the contrary  contained
herein, the indemnification  agreement contained in this Section 6(a): (i) shall
not apply to a Claim  arising out of or based upon a Violation  which  occurs in
reliance upon and in  conformity  with  information  furnished in writing to the
Company  by  such  Indemnified  Person  expressly  for  use in the  Registration
Statement or any such amendment thereof or supplement


                                       11
<PAGE>

thereto; (ii) shall not apply to amounts paid in settlement of any Claim if such
settlement is effected  without the prior written consent of the Company,  which
consent  shall not be  unreasonably  withheld;  and (iii)  with  respect  to any
preliminary prospectus, shall not inure to the benefit of any Indemnified Person
if  the  untrue  statement  or  omission  of  material  fact  contained  in  the
preliminary  prospectus  was corrected on a timely basis in the  prospectus,  as
then  amended or  supplemented,  if such  corrected  prospectus  was timely made
available by the Company  pursuant to Section 3(c) hereof,  and the  Indemnified
Person was promptly advised in writing not to use the incorrect prospectus prior
to  the  use  giving  rise  to  a  Violation   and  such   Indemnified   Person,
notwithstanding  such advice, used it. Such indemnity shall remain in full force
and  effect  regardless  of  any  investigation  made  by or on  behalf  of  the
Indemnified Person and shall survive the transfer of the Registrable  Securities
by the Investors pursuant to Section 9.

     b. In connection  with any  Registration  Statement in which an Investor is
participating, each such Investor agrees severally and not jointly to indemnify,
hold harmless and defend, to the same extent and in the same manner set forth in
Section 6(a), the Company, each of its directors, each of its officers who signs
the Registration Statement,  its employees,  agents and each person, if any, who
controls the Company  within the meaning of Section 15 of the  Securities Act or
Section 20 of the Exchange  Act, and any other  stockholder  selling  securities
pursuant to the  Registration  Statement or any of its  directors or officers or
any person who controls such  stockholder or  underwriter  within the meaning of
the  Securities  Act or the Exchange  Act  (collectively  and  together  with an
Indemnified Person, an "Indemnified  Party"),  against any Claim to which any of
them  may  become  subject,  under  the  Securities  Act,  the  Exchange  Act or
otherwise,  insofar as such Claim arises out of or is based upon any  Violation,
in each case to the extent (and only to the extent) that such  Violation  occurs
in reliance upon and in  conformity  with written  information  furnished to the
Company by such Investor  expressly for use in connection with such Registration
Statement; and subject to Section 6(c) such Investor will reimburse any legal or
other expenses  (promptly as such expenses are incurred and are due and payable)
reasonably  incurred by them in connection with  investigating  or defending any
such Claim;  provided,  however,  that the indemnity agreement contained in this
Section 6(b) shall not apply to amounts paid in  settlement of any Claim if such
settlement is effected without the prior written consent of such Investor, which
consent shall not be unreasonably withheld; provided, further, however, that the
Investor shall be liable under this Agreement  (including  this Section 6(b) and
Section 7) for only that  amount as does not exceed  the net  proceeds  actually
received  by such  Investor  as a result of the sale of  Registrable  Securities
pursuant to such  Registration  Statement.  Such indemnity  shall remain in full
force and effect  regardless of any  investigation  made by or on behalf of such
Indemnified  Party and shall survive the transfer of the Registrable  Securities
by the Investors pursuant to Section 9. Notwithstanding anything to the contrary
contained herein, the  indemnification  agreement contained in this Section 6(b)
with respect to any preliminary prospectus shall not inure to the benefit of any
Indemnified Party if the untrue statement or omission of material fact contained
in the preliminary prospectus was corrected on a timely basis in the prospectus,
as then amended or  supplemented,  and the  Indemnified  Party failed to utilize
such corrected prospectus.


                                       12
<PAGE>

     c. Promptly  after receipt by an Indemnified  Person or  Indemnified  Party
under this Section 6 of notice of the commencement of any action  (including any
governmental  action),  such Indemnified Person or Indemnified Party shall, if a
Claim in respect  thereof is to made against any  indemnifying  party under this
Section  6,  deliver  to  the  indemnifying   party  a  written  notice  of  the
commencement  thereof,  and the  indemnifying  party  shall  have  the  right to
participate in, and, to the extent the  indemnifying  party so desires,  jointly
with any other indemnifying  party similarly  noticed,  to assume control of the
defense thereof with counsel mutually satisfactory to the indemnifying party and
the Indemnified  Person or the Indemnified  Party, as the case may be; provided,
however,  that such  indemnifying  party  shall not be  entitled  to assume such
defense and an Indemnified  Person or Indemnified  Party shall have the right to
retain its own counsel with the fees and expenses to be paid by the indemnifying
party,  if, in the reasonable  opinion of counsel  retained by the  indemnifying
party,  the  representation  by  such  counsel  of  the  Indemnified  Person  or
Indemnified  Party and the  indemnifying  party  would be  inappropriate  due to
actual or potential  conflicts of interest  between such  Indemnified  Person or
Indemnified  Party and any  other  party  represented  by such  counsel  in such
proceeding  or the actual or  potential  defendants  in, or targets of, any such
action  include both the  Indemnified  Person or the  Indemnified  Party and the
indemnifying  party  and  any  such  Indemnified  Person  or  Indemnified  Party
reasonably  determines  that  there  may be  legal  defenses  available  to such
Indemnified  Person or Indemnified Party which are different from or in addition
to those available to such indemnifying  party. The indemnifying party shall pay
for  only  one  separate  legal  counsel  for  the  Indemnified  Persons  or the
Indemnified Parties, as applicable,  and such legal counsel shall be selected by
Investors holding a majority-in-interest  of the Registrable Securities included
in the  Registration  Statement to which the Claim relates (with the approval of
the  Initial  Investors  if it holds  Registrable  Securities  included  in such
Registration  Statement),  if the  Investors  are  entitled  to  indemnification
hereunder,  or by the  Company,  if the Company is  entitled to  indemnification
hereunder,  as  applicable.  The  failure  to  deliver  written  notice  to  the
indemnifying  party within a  reasonable  time of the  commencement  of any such
action  shall  not  relieve  such  indemnifying  party of any  liability  to the
Indemnified  Person or  Indemnified  Party  under this  Section 6, except to the
extent  that the  indemnifying  party is actually  prejudiced  in its ability to
defend such action. The indemnification required by this Section 6 shall be made
by  periodic   payments  of  the  amount   thereof  during  the  course  of  the
investigation or defense, as such expense, loss, damage or liability is incurred
and is due and payable.

     7. CONTRIBUTION.

     To the extent any indemnification by an indemnifying party is prohibited or
limited by law, the indemnifying  party agrees to make the maximum  contribution
with respect to any amounts for which it would otherwise be liable under Section
6 to the  fullest  extent  permitted  by law;  provided,  however,  that  (i) no
contribution  shall be made under  circumstances  where the maker would not have
been liable for  indemnification  under the fault standards set forth in Section
6, (ii) no person guilty of fraudulent  misrepresentation (within the meaning of
Section 11(f) of the Securities Act) shall be entitled to contribution  from any
seller  of  Registrable  Securities  who  was  not  guilty  of  such  fraudulent
misrepresentation,  and (iii) contribution (together with any indemnification or
other


                                       13
<PAGE>

obligations under this Agreement) by any seller of Registrable  Securities shall
be limited in amount to the net amount of proceeds  received by such seller from
the sale of such Registrable Securities.

     8. REPORTS UNDER THE EXCHANGE ACT.

     With a view to making  available to the  Investors the benefits of Rule 144
promulgated  under the Securities Act or any other similar rule or regulation of
the SEC that may at any time  permit the  Investors  to sell  securities  of the
Company to the public without registration ("Rule 144"), the Company agrees to:

     a. file with the SEC in a timely  manner  and make and keep  available  all
reports and other documents required of the Company under the Securities Act and
the Exchange Act so long as the Company remains subject to such requirements (it
being understood that nothing herein shall limit the Company's obligations under
Section  4(c)  of  the  Securities   Purchase  Agreement)  and  the  filing  and
availability  of such reports and other documents is required for the applicable
provisions of Rule 144; and

     b.  furnish to each  Investor  so long as such  Investor  owns  Debentures,
Preferred Shares, Warrants or Registrable Securities, promptly upon request, (i)
a written  statement  by the Company  that it has  complied  with the  reporting
requirements  of Rule 144, the  Securities Act and the Exchange Act, (ii) a copy
of the most  recent  annual or  quarterly  report of the  Company and such other
reports and documents so filed by the Company,  and (iii) such other information
as may be reasonably  requested to permit the Investors to sell such  securities
pursuant to Rule 144 without registration.

     9. ASSIGNMENT OF REGISTRATION RIGHTS.

     The  rights of the  Investors  hereunder,  including  the right to have the
Company register  Registrable  Securities  pursuant to this Agreement,  shall be
automatically  assignable  by  each  Investor  to any  transferee  of all or any
portion of the Debentures, the Preferred Shares, the Warrants or the Registrable
Securities  if:  (i) the  Investor  agrees in  writing  with the  transferee  or
assignee to assign such rights, and a copy of such agreement is furnished to the
Company  within a reasonable  time after such  assignment,  (ii) the Company is,
within a  reasonable  time after such  transfer or  assignment,  furnished  with
written notice of (a) the name and address of such  transferee or assignee,  and
(b) the  securities  with  respect to which such  registration  rights are being
transferred  or assigned,  (iii)  following  such  transfer or  assignment,  the
further  disposition  of  such  securities  by the  transferee  or  assignee  is
restricted  under the Securities Act and applicable  state securities laws, (iv)
at or before the time the Company  receives the written notice  contemplated  by
clause (ii) of this sentence,  the transferee or assignee agrees in writing with
the Company to be bound by all of the provisions  contained herein, and (v) such
transfer shall have been made in accordance with the applicable  requirements of
the Securities Purchase Agreement.


                                       14
<PAGE>

     10. AMENDMENT OF REGISTRATION RIGHTS.

     Provisions of this Agreement may be amended and the observance  thereof may
be waived (either generally or in a particular instance and either retroactively
or  prospectively),  only with  written  consent  of the  Company,  the  Initial
Investors (to the extent the Initial  Investors still own Debentures,  Preferred
Shares,  Warrants or Registrable  Securities)  and Investors who hold a majority
interest of the  Registrable  Securities.  Any  amendment or waiver  effected in
accordance  with this  Section 10 shall be binding  upon each  Investor  and the
Company.

     11. MISCELLANEOUS.

     a. A person or entity  is deemed to be a holder of  Registrable  Securities
whenever such person or entity owns of record such  Registrable  Securities.  If
the Company receives conflicting instructions,  notices or elections from two or
more persons or entities with respect to the same  Registrable  Securities,  the
Company shall act upon the basis of  instructions,  notice or election  received
from the registered owner of such Registrable Securities.

     b. Any notices  required or  permitted  to be given under the terms of this
Agreement  shall  be  sent by  certified  or  registered  mail  (return  receipt
requested) or delivered  personally or by courier or by confirmed telecopy,  and
shall be effective five days after being placed in the mail, if mailed,  or upon
receipt  or  refusal  of  receipt,  if  delivered  personally  or by  courier or
confirmed  telecopy,  in each case addressed to a party.  The addresses for such
communications shall be:

     If to the Company:

        FastComm Communications Corporation
        45472 Holiday Drive
        Sterling, Virginia  20166
        Telecopy:  (703) 318-4315
        Attn: Chief Financial Officer

     with a copy to:

        Amon & Sabatini, L.L.P.
        437 Madison Avenue
        New York, NY  10022
        Telecopy:  (212) 980-3075
        Attn: Thomas Amon, Esquire



                                       15
<PAGE>

     If to Capital Ventures International:

        Capital Ventures International
        c/o Heights Capital Management
        425 California Street
        Suite 1100
        San Francisco, CA 94104
        Telecopy: (415) 403-6525
        Attention: Michael Spolan

     with a copy to:
        
        Klehr, Harrison, Harvey, Branzburg & Ellers
        1401 Walnut Street
        Philadelphia, PA  19102
        Telecopy:  (215) 568-6603
        Attention: Stephen T. Burdumy, Esquire

and if to any other  Investor,  at such  address  as such  Investor  shall  have
provided in writing to the Company,  or at such other address as each such party
furnishes by notice given in accordance with this Section 11(b).

     c.  Failure  of any  party to  exercise  any  right or  remedy  under  this
Agreement or otherwise,  or delay by a party in exercising such right or remedy,
shall not operate as a waiver thereof.

     d. This Agreement shall be governed by and construed in accordance with the
laws of the State of New York  applicable to contracts  made and to be performed
in the State of New York. The Company  irrevocably  consents to the jurisdiction
of the United States federal courts located in New York, New York in any suit or
proceeding based on or arising under this Agreement and irrevocably  agrees that
all claims in  respect  of such suit or  proceeding  may be  determined  in such
courts.  The Company  irrevocably waives the defense of an inconvenient forum to
the  maintenance  of such suit or  proceeding.  The Company  further agrees that
service of process upon the Company,  mailed by first class mail shall be deemed
in every respect  effective service of process upon the Company in any such suit
or proceeding. Nothing herein shall affect the Investors' right to serve process
in any  other  manner  permitted  by  law.  The  Company  agrees  that  a  final
non-appealable  judgment in any such suit or proceeding  shall be conclusive and
may be enforced in other  jurisdictions by suit on such judgment or in any other
lawful manner.

     e. This Agreement,  the Securities Purchase  Agreement,  the Debentures and
the Warrants  (including  all schedules  and exhibits  thereto)  constitute  the
entire  agreement  among the parties  hereto with respect to the subject  matter
hereof  and  thereof.  There  are  no  restrictions,   promises,  warranties  or
undertakings, other than those set forth or referred to herein and therein.


                                       16
<PAGE>

This  Agreement,  the  Securities  Purchase  Agreement,  the  Debentures and the
Warrants  supersede all prior  agreements and  understandings  among the parties
hereto and thereto with respect to the subject matter hereof and thereof.

     f. Subject to the  requirements  of Section 9 hereof,  this Agreement shall
inure to the benefit of and be binding upon the  successors  and assigns of each
of the parties hereto.

     g. The headings in this Agreement are for convenience of reference only and
shall not limit or otherwise affect the meaning hereof.

     h. This  Agreement  may be  executed in two or more  counterparts,  each of
which shall be deemed an original but all of which shall  constitute one and the
same agreement.  This Agreement,  once executed by a party,  may be delivered to
the other party hereto by  facsimile  transmission  of a copy of this  Agreement
bearing the signature of the party so delivering this Agreement.

     i. Each party shall do and perform, or cause to be done and performed,  all
such  further  acts and  things,  and shall  execute  and deliver all such other
agreements,  certificates,  instruments  and  documents,  as the other party may
reasonably  request in order to carry out the intent and accomplish the purposes
of this Agreement and the consummation of the transactions contemplated hereby.

     j. All consents and other determinations to be made by the Investors or the
Initial  Investors  pursuant to this Agreement shall be made by the Investors or
the  Initial  Investors  holding  a  majority  of  the  Registrable   Securities
(determined as if all Debentures, Preferred Shares and Warrants then outstanding
had been converted  into or exercised for  Registrable  Securities)  held by all
Investors or Initial Investors, as the case may be.

     k.  The  initial   number  of  Registrable   Securities   included  on  any
Registration Statement and each increase to the number of Registrable Securities
included  thereon shall be allocated  pro rata among the Investors  based on the
number  of  Registrable  Securities  held by each  Investor  at the time of such
establishment  or increase,  as the case may be. In the event an Investor  shall
sell or otherwise  transfer any of such holder's  Registrable  Securities,  each
transferee  shall be allocated a pro rata  portion of the number of  Registrable
Securities included on a Registration Statement for such transferor.  Any shares
of Common Stock included on a Registration  Statement and which remain allocated
to any person or entity which does not hold any Registrable  Securities shall be
allocated to the remaining Investors,  pro rata based on the number of shares of
Registrable Securities then held by such Investors.

     l. Neither the Company nor any Investor shall be responsible  for any delay
or failure to perform any part of this  Agreement  to the extent that such delay
or failure is solely caused by fire, flood,  earthquake,  explosion,  war, labor
strike,  riot, act of governmental,  civil or military authority which imposes a
moratorium on the performance of the specific obligation in question or


                                       17
<PAGE>

other  comparable  extraordinary  event beyond the  Corporation's  or Investor's
control.  Notice with full details of any such event shall be given to the other
party as promptly as practicable after its occurrence.  The affected party shall
use its best  efforts to minimize  the effects of or end any such event so as to
facilitate the resumption of full performance hereunder.

                  [Remainder of Page Intentionally Left Blank]


                                       18
<PAGE>

     IN WITNESS  WHEREOF,  the parties  have caused  this  Agreement  to be duly
executed as of the date first above written.

FASTCOMM COMMUNICATIONS CORPORATION

By:________________________

Name:______________________

Its:_______________________


Initial Investors:

               CAPITAL VENTURES INTERNATIONAL

               By: Heights Capital Management, as authorized agent

               By:________________________

               Name:______________________

               Its:_______________________


               NELSON PARTNERS

               By:________________________

               Name:______________________

               Its:_______________________


               OLYMPUS SECURITIES, LTD.

               By:________________________

               Name:______________________

               Its:_______________________


               CC INVESTMENTS, LDC

               By:           CSS Corporation Ltd., Corporate Secretary

               By:________________________

               Name:______________________

               Its:_______________________


                                       19
<PAGE>


                                                                       EXHIBIT 1
                                                                          to
                                                                    Registration
                                                                          Rights
                                                                       Agreement

                                     [Date]


[Name and address
of transfer agent]

                     RE: FASTCOMM COMMUNICATIONS CORPORATION

Ladies and Gentlemen:

     We are  counsel  to  FASTCOMM  COMMUNICATIONS  CORPORATION,  a  corporation
organized under the laws of the Commonwealth of Virginia (the "Company"), and we
understand that [Name of Investor] (the "Holder") has purchased from the Company
(i)  convertible  debentures  due  April 9, 2001  (the  "Debentures")  which are
convertible  into (a) (x) shares  (the  "Conversion  Shares")  of the  Company's
common  stock,  par value $.01 per share (the  "Common  Stock") and (y) Warrants
(the "Warrants") to acquire shares of Common Stock (the "Warrant Shares") or (b)
shares of a to-be-created  class of Series A preferred stock of the Company (the
"Preferred Shares", together with the Debentures,  the "Convertible Securities")
which are convertible into Conversion Shares,  upon the terms and subject to the
limitations and conditions set forth in the Debentures or (ii) Preferred Shares.
The Convertible Securities were purchased by the Holder pursuant to a Securities
Purchase Agreement,  dated as of April 9, 1997, by and among the Company and the
signatories  thereto  (the  "Agreement").  Pursuant  to  a  Registration  Rights
Agreement,  dated  as of  April  9,  1997,  by and  among  the  Company  and the
signatories thereto (the "Registration  Rights  Agreement"),  the Company agreed
with the Holder, among other things, to register the Registrable  Securities (as
that term is defined in the Registration  Rights Agreement) under the Securities
Act of 1933, as amended (the "Securities  Act"),  upon the terms provided in the
Registration  Rights  Agreement.  In connection  with the Company's  obligations
under the Registration Rights Agreement,  on _____ __, 1997, the Company filed a
Registration  Statement  on  Form  S-___  (File  No.  333-  _____________)  (the
"Registration  Statement")  with the  Securities  and Exchange  Commission  (the
"SEC")  relating  to the  Registrable  Securities,  which  names the Holder as a
selling stockholder thereunder.

     [Other introductory and scope of examination language to be inserted]

     Based  on  the  foregoing,  we  are of the  opinion  that  the  Registrable
Securities have been registered under the Securities Act.

                  [Other appropriate language to be included.]

                                             Very truly yours,


cc:   [Name of Investor]



                                                                       EXHIBIT A
                                                                              to
                                                                      Securities
                                                                        Purchase
                                                                       Agreement


THIS  CONVERTIBLE  TERM  DEBENTURE AND THE SECURITIES  ISSUABLE UPON  CONVERSION
HEREOF HAVE NOT BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF 1933, AS AMENDED
(THE  "SECURITIES  ACT") OR THE  SECURITIES  LAWS OF ANY STATE.  THE  SECURITIES
REPRESENTED HEREBY MAY NOT BE OFFERED,  SOLD OR OTHERWISE TRANSFERRED UNLESS THE
SECURITIES  ARE  REGISTERED  UNDER  THE  SECURITIES  ACT  AND  APPLICABLE  STATE
SECURITIES  LAWS,  OR ANY SUCH OFFER,  SALE OR  TRANSFER IS MADE  PURSUANT TO AN
AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THOSE LAWS.


                           CONVERTIBLE TERM DEBENTURE

April 9, 1997                                                        $ _________
        
     FOR  VALUE  RECEIVED,   FASTCOMM  COMMUNICATIONS  CORPORATION,  a  Virginia
corporation  (hereinafter  called the  "Borrower" or the  "Corporation")  hereby
promises  to pay to the  order of  ______________  or  registered  assigns  (the
"Holder") the sum of ______________________Dollars  ($________) on April 9, 2001
(the "Scheduled  Maturity  Date"),  and to pay interest on the unpaid  principal
balance  hereof at the rate of five  percent (5%) per annum from the date hereof
(the "Issue Date") until the same becomes due and payable (which  interest shall
accrue on a daily  basis  based on a 360 day year),  whether at maturity or upon
acceleration  or  otherwise.  Any amount of  principal  of or  interest  on this
Debenture  which is not paid when due shall bear interest at the rate of fifteen
percent  (15%)  per  annum  from the due date  thereof  until  the same is paid.
Interest  shall  commence  accruing  on the Issue  Date and,  to the  extent not
converted  in  accordance  with the  provisions  of Article  IV below,  shall be
payable on the date the  principal  amount in respect of which it has accrued is
paid,  whether at maturity or upon  acceleration  or by prepayment or otherwise.
Except as otherwise  provided in Article VIII hereof,  all payments of principal
and  interest  shall be made in shares of Common Stock and  Warrants  (each,  as
defined  below) at a  conversion  price  equal to the average of the Closing Bid
Prices for the ten (10)  consecutive  trading  days  ending on the  trading  day
immediately   preceding  the  Scheduled  Maturity  Date  (subject  to  equitable
adjustment for any stock splits,  stock dividends,  reclassifications or similar
events during such ten (10) trading day period).  All payments  shall be made at
such address as the


<PAGE>

Holder shall hereafter give to the Borrower by written notice made in accordance
with the provisions of this Debenture.

     This  Debenture  is  being  issued  by  the  Borrower  along  with  similar
convertible  term  debentures  (the "Other  Debentures"  and together  with this
Debenture,  the "Debentures") delivered to other holders (if any) (together with
the  Holder  referred  to  herein,  the  "Holders")  pursuant  to  that  certain
Securities  Purchase  Agreement,  dated as of the date hereof,  by and among the
Borrower and the Holders (the "Purchase Agreement").

                                    ARTICLE I

                                   PREPAYMENT

     A. Limited Right to Prepay.  Upon the occurrence of an Event of Default (as
defined  herein),  this Debenture shall be prepaid by the Borrower in accordance
with the provisions of Article VIII hereof. Except as provided in Paragraph B of
this  Article I, this  Debenture  may not be prepaid  without the prior  written
consent of the Holder.

     B. Prepayment at Borrower's Option.

          (i) So long as no Event of  Default  shall have  occurred,  during the
thirty (30) calendar day period beginning on the trading day following the first
ten (10) consecutive trading day period (if any) that the average of the Closing
Bid Prices (as defined  below) for the Common Stock is less than $3.02 per share
(subject  to  equitable   adjustments   for  stock  splits,   stock   dividends,
reclassifications  or  similar  events)  and  provided  the  Borrower  is not in
material  violation  of any of its  obligations  under the  Securities  Purchase
Agreement or the Registration Rights Agreement, then the Borrower shall have the
right to prepay ("Prepayment at Borrower's  Election") all or any portion of the
then  outstanding  Debentures  (other than Debentures which are the subject of a
Notice  of  Conversion  delivered  prior to the  delivery  date of the  Optional
Prepayment  Notice (as defined  below)) for the Optional  Prepayment  Amount (as
defined  below),  which right shall be  exercisable  one time during the term of
this Debenture by the Borrower in its sole discretion by delivery of an Optional
Prepayment Notice during such thirty (30) day period and otherwise in accordance
with the prepayment procedures set forth below. Any optional prepayment pursuant
to this  Paragraph B shall be made ratably  among the holders of  Debentures  in
proportion to the principal  amount of Debentures then  outstanding.  Holders of
Debentures  may  convert  all or any  part  of  their  Debentures  selected  for
prepayment  hereunder into Common Stock and Warrants at a conversion price equal
to the average of the Closing  Bid Prices for the ten (10)  consecutive  trading
days  ending on the  trading  day  immediately  preceding  the  Conversion  Date
(subject  to  equitable  adjustment  for  any  stock  splits,  stock  dividends,
reclassifications  or similar events during such ten (10) trading day period) by
delivering  a Notice of  Conversion  to the  Borrower  at any time  prior to the
Effective  Date of Prepayment as defined in  subparagraph  (iii).  The "Optional
Prepayment  Amount" with respect to each Debenture  means (a) 120% multiplied by
the sum of the principal amount thereof plus all


                                       2
<PAGE>

accrued and unpaid interest and Conversion Default Payments (if any) through the
date of  prepayment  plus (b) Warrants to purchase  forty  percent  (40%) of the
number of shares of Common Stock which would have been issuable to the holder of
such  Debenture had such Debenture been converted into Common Stock and Warrants
in  accordance  with  Article  IV.A on the  date  of  delivery  of the  Optional
Prepayment Notice.

          (ii) The Borrower may not deliver an Optional  Prepayment  Notice to a
holder of Debentures unless on or prior to the date of delivery of such Optional
Prepayment Notice,  the Borrower shall have deposited with NationsBank,  N.A. or
another escrow agent  reasonably  satisfactory  to the Holder,  as a trust fund,
cash and Warrants  sufficient  in amount to pay all amounts to which the holders
of Debentures are entitled upon such prepayment  pursuant to subparagraph (i) of
this Paragraph B, with  irrevocable  instructions and authority to such transfer
agent or escrow agent to complete the prepayment thereof in accordance with this
Paragraph B. Any Optional  Prepayment  Notice  delivered in accordance  with the
immediately preceding sentence shall be accompanied by a statement executed by a
duly  authorized  officer of its transfer agent or escrow agent,  certifying the
amount of funds and Warrants  which have been deposited with such transfer agent
or escrow agent and that the transfer agent or escrow agent has been  instructed
and agrees to act as prepayment agent hereunder.

          (iii) The Borrower shall effect each prepayment under this Article I.B
by giving at least five (5)  business  days but not more than ten (10)  business
days prior written notice (the "Optional  Prepayment  Notice") of the date which
such prepayment is to become effective (the "Effective Date of Prepayment"), the
Debentures selected for prepayment and the Optional Prepayment Amount to (i) the
holders of  Debentures  selected  for  prepayment  at the address and  facsimile
number of such holder  appearing in the  Borrower's  register for the Debentures
and (ii) the transfer  agent for the Common  Stock,  which  Optional  Prepayment
Notice  shall be deemed to have been  delivered  on the  business  day after the
Borrower's  fax  (with a copy  sent  by  overnight  courier  to the  holders  of
Debentures) of such notice to the holders of Debentures.

          (iv) The Optional Prepayment Amount shall be paid to the holder of the
Debentures being prepaid within three (3) business days of the Effective Date of
Prepayment;  provided,  however,  that the  Borrower  shall not be  obligated to
deliver  any  portion  of  the  Optional  Prepayment  Amount  until  either  the
Debentures  being  prepaid are  delivered  to the office of the  Borrower or the
transfer  agent,  or the holder notifies the Borrower or the transfer agent that
such  Debentures   have  been  lost,   stolen  or  destroyed  and  delivers  the
documentation  in accordance with Article X.H hereof.  Notwithstanding  anything
herein to the contrary,  in the event that the Debentures  being prepaid are not
delivered to the  Borrower or the  transfer  agent prior to the 3rd business day
following the Effective  Date of  Prepayment,  the  prepayment of the Debentures
pursuant to this Article I.B shall still be deemed effective as of the Effective
Date of  Prepayment  and the  Optional  Prepayment  Amount  shall be paid to the
holder of Debentures being prepaid within five (5) business days of the date the
Debentures are actually delivered to the Borrower or the transfer agent.


                                       3
<PAGE>

                                   ARTICLE II

                             [INTENTIONALLY OMITTED]


                                   ARTICLE III

                               CERTAIN DEFINITIONS

     The following terms shall have the following meanings:

     A. "Closing Bid Price" means,  for any security as of any date, the closing
bid price of such  security  on the  principal  securities  exchange  or trading
market  where  such  security  is  listed or traded  as  reported  by  Bloomberg
Financial  Markets (or a  comparable  reporting  service of national  reputation
selected by the Corporation  and reasonably  acceptable to holders of a majority
of the aggregate principal amount represented by the then outstanding Debentures
("Majority  Holders")  if  Bloomberg  Financial  Markets  is not then  reporting
closing  bid prices of such  security)  (collectively,  "Bloomberg"),  or if the
foregoing  does not apply,  the last reported sale price of such security in the
over-the-counter  market on the  electronic  bulletin board for such security as
reported by  Bloomberg,  or, if no sale price is reported  for such  security by
Bloomberg,  the average of the bid prices of any market makers for such security
as reported in the "pink sheets" by the National  Quotation Bureau,  Inc. If the
Closing Bid Price cannot be calculated  for such security on such date on any of
the foregoing  bases,  the Closing Bid Price of such security on such date shall
be the fair market value as reasonably  determined by an investment banking firm
selected by the Corporation and reasonably  acceptable to the Majority  Holders,
with the costs of such appraisal to be borne by the Corporation.

     B.  "Conversion  Amount" means the portion of the principal  amount of this
Debenture  being  converted,  plus the  accrued  interest  thereon  through  the
Conversion  Date as specified in the notice of  conversion  in the form attached
hereto (the "Notice of Conversion").

     C. "Conversion Date" means, for any Optional Conversion, the date specified
in the Notice of  Conversion  so long as the copy of the Notice of Conversion is
faxed (or  delivered  by other  means  resulting  in notice) to the  Corporation
before  Midnight,  New York City time, on the  Conversion  Date indicated in the
Notice of  Conversion.  If the Notice of Conversion is not so faxed or otherwise
delivered  before  such  time,  then the  Conversion  Date shall be the date the
holder faxes or otherwise delivers the Notice of Conversion to the Corporation.


                                       4
<PAGE>

     D. "Conversion  Percentage"  shall have the following  meaning and shall be
subject to adjustment as provided herein:

If the Conversion Date is:                    Then the Conversion Percentage is:
- --------------------------                    ----------------------------------

Prior to October 6, 1997                                     100%

On or after October 6, 1997                                   90%

     E.  "Conversion  Price"  means,  (a) with  respect to any  Conversion  Date
occurring prior to October 6, 1997, the Variable  Conversion  Price and (b) with
respect to any Conversion  Date occurring on or after October 6, 1997, the lower
of the Fixed Conversion Price and the Variable  Conversion Price, each in effect
as of such date and subject to adjustment as provided herein.

     F. "Fixed Conversion Price" means $7.54, and shall be subject to adjustment
as provided herein.

     G. "N" means the number of days from,  but  excluding,  the  Issuance  Date
through and including the Conversion Date.

     H. "Variable Conversion Price" means, as of any date of determination,  the
amount obtained by multiplying  the Conversion  Percentage then in effect by the
average  of the  Closing  Bid  Prices  for the  Common  Stock  for the ten  (10)
consecutive  trading days ending on the trading day  immediately  preceding such
date of  determination  (subject to equitable  adjustment  for any stock splits,
stock  dividends,  reclassifications  or  similar  events  during  such ten (10)
trading day period), and shall be subject to adjustment as provided herein.

     I. "Warrant Coverage Percentage" shall have the following meaning and shall
be subject to adjustment as provided herein:

If the Conversion Date is:              Then the Warrant Coverage Percentage is:
- --------------------------              ----------------------------------------

Prior to October 6, 1997                                  0%

On or after October 6, 1997                              20%
and prior to April 4, 1998

On or after April 4, 1998                                40%


                                       5
<PAGE>

                                  IV CONVERSION

     A.  Conversion at the Option of the Holder.  Subject to the  limitations on
conversions  contained in Paragraph C of this Article IV, the Holder may, at any
time and from time to time,  convert (an "Optional  Conversion") all or any part
of the outstanding principal amount of this Debenture, plus all accrued interest
thereon through the Conversion Date, into:

          (i) a number of fully paid and  nonassessable  shares of Common  Stock
determined in accordance with the following formula:

                                Conversion Amount
                                -----------------
                                Conversion Price
                                                         Plus

          (ii)  warrants,  in the form  attached as Exhibit B to the  Securities
Purchase Agreement,  to purchase a number of shares of Common Stock equal to the
Warrant Coverage  Percentage  multiplied by the number of shares of Common Stock
issuable pursuant to clause (i) above (the "Warrants") .

     B.  Mechanics  of  Conversion.  In order to effect an Optional  Conversion,
Holder shall: (x) fax (or otherwise deliver) a copy of the fully executed Notice
of Conversion to the Corporation for the Common Stock and (y) surrender or cause
to be surrendered, this Debenture duly endorsed, along with a copy of the Notice
of Conversion as soon as practicable thereafter to the Corporation. Upon receipt
by the  Corporation of a facsimile  copy of a Notice of Conversion  from Holder,
the Corporation shall immediately send, via facsimile,  a confirmation to Holder
stating that the Notice of Conversion has been received, the date upon which the
Corporation  expects to deliver the Common Stock and Warrants  upon a conversion
and the name  and  telephone  number  of a  contact  person  at the  Corporation
regarding the conversion. The Corporation shall not be obligated to issue shares
of Common Stock and Warrants  issuable upon such  conversion  unless either this
Debenture is  delivered  to the  Corporation  as provided  above,  or the holder
notifies the Corporation that this Debenture has been lost,  stolen or destroyed
(and the requirements of Article X.H are complied with).

          (i) Delivery of Common Stock and Warrants  Upon  Conversion.  Upon the
surrender of this Debenture and a Notice of Conversion,  the Corporation  shall,
no later than the later of the (a) second  business day following the Conversion
Date and (b) the date of such surrender  (or, if this Debenture is lost,  stolen
or destroyed certificates, after provision of indemnity pursuant to Article X.H)
(the  "Delivery  Period"),  issue and  deliver to the Holder (x) that  number of
shares of Common Stock and Warrants  issuable upon  conversion of the portion of
this  Debenture  being  converted  and (y) a new  Debenture  in the form  hereof
representing the balance of the principal amount hereof not being converted,  if
any.


                                       6
<PAGE>

          (ii) Taxes.  The  Corporation  shall pay any and all taxes (other than
transfer  taxes)  which may be imposed  upon it with respect to the issuance and
delivery of the shares of Common Stock and Warrants upon the  conversion of this
Debenture.

          (iii) No Fractional  Shares. If any conversion of this Debenture would
result in the issuance of either a fractional share of Common Stock or a Warrant
to purchase a fractional  share of Common Stock,  such fractional share shall be
disregarded and the number of shares of Common Stock issuable upon conversion of
this Debenture or upon exercise of the Warrant shall be the nearest whole number
of shares.

          (iv) Conversion Disputes. In the case of any dispute with respect to a
conversion, the Corporation shall promptly issue such number of shares of Common
Stock and  Warrants as are not  disputed in  accordance  with  subparagraph  (i)
above.  If such dispute only involves the  calculation of the Conversion  Price,
the Corporation shall submit the disputed calculations to its outside accountant
via  facsimile  within  two  (2)  business  days of  receipt  of the  Notice  of
Conversion.   The  accountant  shall  audit  the  calculations  and  notify  the
Corporation  and the Holder of the results no later than two (2)  business  days
from  the  date  it  receives  the  disputed   calculations.   The  accountant's
calculation shall be deemed  conclusive,  absent manifest error. The Corporation
shall then issue the  appropriate  number of shares of Common Stock and Warrants
in accordance with subparagraph (i) above.

     C.  Limitations on Conversions.  The Conversions of this Debenture shall be
subject to the following limitations (each of which limitations shall be applied
independently):

          (i)  Volume  Limitations.  During  the  first 360 days  following  the
Closing Date  (except  during a Prepayment  Conversion  Period),  Holder may not
during any ninety (90) calendar day period ending on a Conversion Date,  convert
at the Variable  Conversion  Price more than  seventy-five  percent (75%) of the
original  principal  amount of this Debenture.  For the avoidance of doubt,  the
conversion  of any  portion of this  Debenture  into Common  Stock and  Warrants
subject to an Optional Prepayment Notice shall not be counted as a conversion at
the Variable Conversion Price for purposes of this subparagraph (i).

          (ii)  Cap  Amount.  Unless  permitted  by  the  applicable  rules  and
regulations  of the  principal  securities  market on which the Common  Stock is
listed or traded,  in no event shall the total  number of shares of Common Stock
issued upon  conversion of this  Debenture and the Other  Debentures  exceed the
maximum  number  of shares of Common  Stock  that the  Corporation  can so issue
pursuant  to Rule  4460(i)  of the Nasdaq  National  Market  ("Nasdaq")  (or any
successor  rule) (the "Cap  Amount")  which,  as of the Issue Date is  2,016,261
shares.  The  portion of the Cap Amount  allocable  to this  Debenture  shall be
40,325  shares and shall be subject to adjustment as provided in Article X.D. In
the event the Corporation is prohibited from issuing shares of Common Stock as a
result of the operation of this  subparagraph  (i), the Corporation shall comply
with Article VII.


                                       7
<PAGE>

          (iii) No Five Percent Holders. In no event shall Holder be entitled to
receive  shares of Common Stock upon a conversion  to the extent that the sum of
(x) the number of shares of Common  Stock  beneficially  owned by Holder and its
affiliates  (exclusive  of shares  issuable upon  conversion of the  unconverted
portion of any Debentures or the unexercised or unconverted portion of any other
securities of the  Corporation  (including,  without  limitation,  the Warrants)
subject to a limitation on conversion or exercise  analogous to the  limitations
contained herein) and (y) the number of shares of Common Stock issuable upon the
conversion  of  the  portion  of  this  Debenture  with  respect  to  which  the
determination  of this  subparagraph  is being made,  would result in beneficial
ownership by the holder and its affiliates of more than 4.9% of the  outstanding
shares of Common Stock. For purposes of this subparagraph,  beneficial ownership
shall be determined in accordance with Section 13(d) of the Securities  Exchange
Act of 1934, as amended,  and Regulation 13 D-G thereunder,  except as otherwise
provided in clause (x) above.  The  restriction  contained in this  subparagraph
(iii) shall not be altered, amended, deleted or changed in any manner whatsoever
unless  the  holders  of a majority  of the  Common  Stock and the Holder  shall
approve such alteration, amendment, deletion or change.


                     V RESERVATION OF SHARES OF COMMON STOCK

     A. Reserved Amount.  On the Issue Date, the Corporation shall have reserved
60,000  authorized  but  unissued  shares of  Common  Stock  for  issuance  upon
conversion  of  this  Debenture  and  exercise  of the  Warrants  issuable  upon
conversion hereof and thereafter the number of authorized but unissued shares of
Common Stock so reserved  (the  "Reserved  Amount")  shall not be decreased  and
shall  at  all  times  be  sufficient  to  provide  for  the  conversion  of the
outstanding principal amount of this Debenture (and accrued interest thereon) at
the then current  Conversion  Price and exercise of the Warrants  then  issuable
upon conversion hereof.

     B. Increases to Reserved  Amount.  If the Reserved Amount for any three (3)
consecutive  trading  days (the last of such  three (3)  trading  days being the
"Authorization Trigger Date") shall be less than 135% of the number of shares of
Common Stock  issuable  upon  conversion  of this  Debenture and exercise of the
Warrants  issuable upon conversion  hereof on such trading days, the Corporation
shall  immediately  notify Holder of such  occurrence  and shall take  immediate
action (including,  if necessary,  seeking shareholder approval to authorize the
issuance of additional  shares of Common Stock) to increase the Reserved  Amount
to 200% of the number of shares of Common Stock then issuable upon conversion of
this Debenture and exercise of the Warrants issuable upon conversion  hereof. In
the event the Corporation fails to so increase the Reserved Amount within ninety
(90) days after an Authorization  Trigger Date, Holder shall thereafter have the
option,  exercisable  in whole  or in part at any time and from  time to time by
delivery of a Default Notice (as defined in Article VIII.C) to the  Corporation,
to require the Corporation to prepay for cash, at the Default Amount (as defined
in Article  VIII.B),  a portion of the principal  amount of this Debenture (plus
accrued interest thereon) such that, after giving effect to such prepayment, the
Reserved  Amount  exceeds  135% of the total  number  of shares of Common  Stock
issuable  to Holder  upon  conversion  of this  Debenture  (and  exercise of the
Warrants issuable upon conversion hereof) on the


                                       8
<PAGE>

date of the Default Notice.  If the Corporation fails to pay such Default Amount
within five (5) business days after its receipt of a Default Notice, then Holder
shall be entitled to the remedies provided in Article VIII.C.


                        VI FAILURE TO SATISFY CONVERSIONS

     A.  Conversion  Default  Payments.  If, at any time,  (x) Holder  submits a
Notice of  Conversion  and the  Corporation  fails for any  reason  (other  than
because such issuance would exceed Holder's Reserved Amount or allocated portion
of the Cap Amount,  for which  failures  the Holder  shall have the remedies set
forth in Articles V and VII) to deliver,  on or prior to the fourth business day
following the expiration of the Delivery Period for such conversion, such number
of  Warrants  or freely  tradeable  shares of  Common  Stock to which  Holder is
entitled upon such  conversion,  or (y) the  Corporation  provides notice to any
Holder at any time of its  intention not to issue  Warrants or freely  tradeable
shares of Common Stock upon exercise by any Holder of its  conversion  rights in
accordance  with the terms of the  Debentures  (other than because such issuance
would  exceed such  Holder's  Reserved  Amount or  allocated  portion of the Cap
Amount) (each of (x) and (y) being a "Conversion Default"), then the Corporation
shall pay to Holder, payments for the first ten (10) business days following the
expiration of the Delivery Period, in the case of a Conversion Default described
in clause (x), and for the first ten (10) business days of a Conversion  Default
described  in  clause  (y),  an amount  equal to $500 per day.  In the event any
Conversion  Default  continues  beyond such ten (10)  business  day period,  the
Corporation shall pay to Holder an additional amount equal to:

                     (.24) x (D/365) x (the Default Amount)

where:

     "D" means the number of days after the  expiration of the ten (10) business
day period described above through and including the Default Cure Date;

     "Default  Amount" means the outstanding  principal amount of all Debentures
held by Holder plus all accrued and unpaid interest  thereon as of the first day
of the Conversion Default.

     "Default  Cure  Date"  means  (i)  with  respect  to a  Conversion  Default
described in clause (x) of its definition,  the date the Corporation effects the
conversion of the portion of this  Debenture  submitted for  conversion and (ii)
with respect to a Conversion  Default described in clause (y) of its definition,
the date the  Corporation  begins  to issue  freely  tradeable  Common  Stock in
satisfaction of all conversions of Debentures in accordance with their terms.

     The payments to which Holder shall be entitled pursuant to this Paragraph A
are referred to herein as  "Conversion  Default  Payments."  Holder may elect to
receive  accrued  Conversion  Default  Payments in cash or to convert all or any
portion of such accrued Conversion Default


                                       9
<PAGE>

Payments,  at any time, into Common Stock and Warrants at the lowest  Conversion
Price in  effect  during  the  period  beginning  on the date of the  Conversion
Default  through the Conversion  Date for such  conversion.  In the event Holder
elects to receive any  Conversion  Default  Payments in cash, it shall so notify
the Corporation in writing. Such payment shall be made in accordance with and be
subject to the  provisions of Article X.J. In the event Holder elects to convert
all or any portion of the Conversion Default Payments,  Holder shall indicate on
a Notice of Conversion  such portion of the  Conversion  Default  Payments which
Holder elects to so convert and such  conversion  shall otherwise be effected in
accordance with the provisions of Article IV.

     B. Adjustment to Conversion Price. If Holder has not received  certificates
for all shares of Common Stock and Warrants  prior to the tenth (10th)  business
day after the expiration of the Delivery  Period with respect to a conversion of
any portion of any of Holder's  Debentures  for any reason  (other than  because
such issuance would exceed Holder's  Reserved Amount or allocated portion of the
Cap Amount,  for which  failures  Holder  shall have the  remedies  set forth in
Articles V and VII),  then the Fixed  Conversion  Price shall  thereafter be the
lesser of (i) the Fixed Conversion Price on the Conversion Date specified in the
Notice of  Conversion  which  resulted  in the  Conversion  Default and (ii) the
lowest Conversion Price in effect during the period beginning on, and including,
such  Conversion  Date through and including the day such shares of Common Stock
and  Warrants  are  delivered  to the Holder.  If there shall occur a Conversion
Default of the type  described  in clause (y) of Article  VI.A.,  then the Fixed
Conversion  Price with respect to any conversion  thereafter shall be the lowest
Conversion  Price in effect at any time  during  the  period  beginning  on, and
including,  the date of the occurrence of such  Conversion  Default  through and
including the Default Cure Date. The Fixed  Conversion Price shall thereafter be
subject to further adjustment for any events described in Article IX.

     C. Buy-In Cure.  Unless the  Corporation has notified the Holder in writing
that the  Corporation  is unable to honor  conversions,  if (i) the  Corporation
fails for any reason to  deliver  during the  Delivery  Period  shares of Common
Stock  to  Holder  upon a  conversion  of this  Debenture  and  (ii)  after  the
applicable Delivery Period with respect to such conversion, Holder purchases (in
an open market transaction or otherwise) shares of Common Stock to make delivery
upon a sale by Holder of the shares of Common  Stock (the "Sold  Shares")  which
Holder anticipated receiving upon such conversion (a "Buy-In"),  the Corporation
shall pay Holder (in  addition to any other  remedies  available  to Holder) the
amount  by  which  (x)  Holder's  total  purchase  price  (including   brokerage
commissions, if any) for the shares of Common Stock so purchased exceeds (y) the
net  proceeds  received  by the  Holder  from the sale of the Sold  Shares.  For
example,  if a holder  purchases  shares of Common Stock having a total purchase
price of $11,000 to cover a Buy-In with  respect to shares of Common  Stock sold
for $10,000,  the Corporation will be required to pay the Holder $1,000.  Holder
shall  provide  the  Corporation  written  notification  indicating  any amounts
payable to Holder pursuant to this Paragraph C. The  Corporation  shall make any
payments required pursuant to this Paragraph C in accordance with and subject to
the provisions of Article X.J.


                                       10
<PAGE>

     D. Right to Require Prepayment.  If the Corporation fails, and such failure
continues  uncured for five (5)  business  days after the  Corporation  has been
notified  thereof in writing by Holder,  for any reason (other than because such
issuance would exceed Holder's  Reserved Amount or its allocated  portion of the
Cap Amount,  for which  failures  Holder  shall have the  remedies  set forth in
Articles V and VII) to issue shares of Common Stock or Warrants  within ten (10)
business days after the  expiration  of the Delivery  Period with respect to any
conversion of this Debenture, then Holder may elect at any time and from time to
time prior to the Default Cure Date for such Conversion  Default, by delivery of
a Default Notice (as defined in Article VIII.C) to the Corporation,  to have all
or any portion of Holder's outstanding Debentures prepaid by the Corporation for
cash,  the Default  Amount (as defined in Article  VIII.B).  If the  Corporation
fails to pay such Default Amount within five (5) business days after its receipt
of a Prepayment  Notice,  then Holder shall be entitled to the remedies provided
in Article VIII.C.

                   VII INABILITY TO CONVERT DUE TO CAP AMOUNT

     A. Obligation to Cure. If at any time the then unissued portion of Holder's
Cap  Amount  is less than 135% of the  number  of  shares of Common  Stock  then
issuable upon conversion of this Debenture (a "Trading  Market Trigger  Event"),
the  Corporation  shall  immediately  notify the Holders of such  occurrence and
shall take immediate action  (including,  if necessary,  seeking the approval of
its  shareholders  to  authorize  the  issuance  of the full number of shares of
Common Stock which would be issuable upon the  conversion of this  Debenture but
for the Cap Amount) to eliminate any  prohibitions  under  applicable law or the
rules or  regulations of any stock  exchange,  interdealer  quotation  system or
other self-regulatory organization with jurisdiction over the Corporation or any
of its securities on the  Corporation's  ability to issue shares of Common Stock
in excess of the Cap Amount. In the event the Corporation fails to eliminate all
such  prohibitions  within  ninety  (90) days after the Trading  Market  Trigger
Event, Holder shall thereafter have the option,  exercisable in whole or in part
at any time and from time to time by delivery of a Default Notice (as defined in
Article VIII.C) to the Corporation,  to require the Corporation to pay for cash,
at the Default Amount (as defined in Article VIII.B), a portion of the principal
amount of this  Debenture (and accrued and unpaid  interest  thereon) such that,
after giving effect to such prepayment,  Holder's  allocated  portion of the Cap
Amount  exceeds 135% of the total  number of shares of Common Stock  issuable to
Holder upon conversion of this Debenture on the date of such Default Notice.  If
the  Corporation  fails to pay the Default  Amount within five (5) business days
after its  receipt of a Default  Notice,  then  Holder  shall be entitled to the
remedies provided in Article VIII.C.

     B.  Remedies.   If  the  Corporation  fails  to  eliminate  the  applicable
prohibitions  within the ninety (90) day cure period  referred to in Paragraph A
of this Article VII and thereafter the  Corporation is prohibited,  at any time,
from  issuing  shares  of  Common  Stock or  Warrants  upon  conversion  of this
Debenture  because such issuance would exceed Holder's  allocated portion of the
Cap Amount  because of applicable  law or the rules or  regulations of any stock
exchange,  interdealer  quotation system or other  self-regulatory  organization
with jurisdiction  over the Corporation or its securities,  Holder may elect any
or both of the following additional remedies:


                                       11
<PAGE>

          (i) to  require,  with  the  consent  of  the  Majority  Holders,  the
Corporation to terminate the listing of its Common Stock on Nasdaq (or any other
stock exchange, interdealer quotation system or trading market) and to cause its
Common Stock to be eligible for trading on the Nasdaq  SmallCap Market or on the
over-the-counter electronic bulletin board, at the option of the Holder; or

          (ii) to require the  Corporation  to issue  shares of Common Stock and
Warrants in accordance with Holder's Notice of Conversion at a conversion  price
equal to the average of the Closing Bid Prices of the Common  Stock for the five
(5)  consecutive  trading days  (subject to equitable  adjustment  for any stock
splits,  stock dividends,  reclassifications  or similar events during such five
(5) trading day period)  preceding  the date of Holder's  written  notice to the
Corporation  of its  election  to receive  shares of Common  Stock and  Warrants
pursuant to this subparagraph (ii).

                                  ARTICLE VIII

                                EVENTS OF DEFAULT

     A. Events of Default.  If any of the following  events of default (each, an
"Event of Default" ) shall occur:

          (i) the  Corporation  fails (i) to pay the principal  hereof when due,
whether at  maturity,  upon  acceleration  or  otherwise or (ii) to pay interest
hereon at maturity and such failure  continues for a period of five (5) business
days after the due date thereof,

          (ii) the Common  Stock  (including  any of the shares of Common  Stock
issuable upon conversion of this Debenture and exercise of the Warrants issuable
upon  conversion  hereof) is suspended  from trading on any of, or is not listed
(and  authorized)  for trading on at least one of, the New York Stock  Exchange,
the American  Stock Exchange or Nasdaq for an aggregate of ten (10) trading days
in any nine (9) month period,

          (iii) the Corporation  fails, and any such failure  continues  uncured
for five (5) business days after the  Corporation  has been notified  thereof in
writing by the Holder,  to remove any  restrictive  legend on any certificate or
any shares of Common Stock issued to the Holder upon conversion of any Debenture
or any  Warrant  as and when  required  by the  Debentures,  the  Warrants,  the
Securities Purchase Agreement or the Registration Rights Agreement,  dated as of
April 9, 1997, by and among the  Corporation and the other  signatories  thereto
(the "Registration Rights Agreement"),

          (iv) the Corporation provides notice to any of the Holders,  including
by way of public announcement, at any time, of its intention not to issue shares
of Common Stock or Warrants to any of the Holders upon  conversion in accordance
with the terms of the Debentures (other than


                                       12
<PAGE>

due to the circumstances contemplated by Articles V or VII for which the Holders
shall have the remedies set forth in such Articles);

          (v) the Corporation  breaches any material  covenant or other material
term or  condition of this  Debenture  (other than as  specifically  provided in
subparagraphs  (i)-(iv) of this Paragraph A), the Securities Purchase Agreement,
the Warrants or the Registration  Rights Agreement and such breach continues for
a period of fifteen  (15)  business  days after  written  notice  thereof to the
Corporation;

          (vi) any  representation or warranty of the Corporation made herein or
in any agreement,  statement or certificate  given in writing pursuant hereto or
in connection herewith (including,  without limitation,  the Securities Purchase
Agreement and the Registration  Rights Agreement),  shall be false or misleading
in any material  respect when made and the breach of which would have a material
adverse effect on the Corporation or the rights of the Corporation  with respect
to any of the Debentures or the shares of Common Stock or Warrants issuable upon
conversion of the Debentures;

          (vii) the Corporation or any subsidiary of the Corporation  shall make
an  assignment  for the  benefit  of  creditors,  or apply for or consent to the
appointment  of a receiver  or trustee for it or for a  substantial  part of its
property  or  business;  or  such a  receiver  or  trustee  shall  otherwise  be
appointed, or

          (viii)   bankruptcy,   insolvency,   reorganization   or   liquidation
proceedings or other  proceedings for relief under any bankruptcy law or any law
for the relief of debtors shall be instituted by or against the  Corporation  or
any subsidiary of the Corporation (and such proceedings  shall continue unstayed
for thirty (30) days);

Then,  upon the occurrence and during the  continuation  of any Event of Default
specified in  subparagraphs  (i)-(vi) of this  Paragraph A, at the option of the
Holder  hereof,  and upon the  occurrence  of any Event of Default  specified in
subparagraph  (vii) or (viii) of this Paragraph A, the Corporation  shall pay to
the Holder,  in satisfaction of its obligation to pay the outstanding  principal
amount of this  Debenture  and accrued and unpaid  interest  thereon,  an amount
equal to the Default  Amount and such Default  Amount,  together  with all other
ancillary amounts payable  hereunder shall  immediately  become due and payable,
all without  demand,  presentment  or notice,  all of which hereby are expressly
waived, together with all costs, including, without limitation, reasonable legal
fees and  expenses of  collection,  and the Holder shall be entitled to exercise
all other rights and remedies available at law or in equity.


                                       13
<PAGE>

     B. Definition of Default Amount.  The "Default  Amount" with respect to any
portion of this Debenture means an amount equal to:
    
                                        A            X        M
                                    ----------
                                       C P

where:

     "A"  means  the  principal  amount of this  Debenture  being  paid plus all
accrued and unpaid interest thereon through the payment date;

     "CP"  means  the  Conversion  Price in  effect  on the date of the  Default
Notice; and

     "M" means the  highest  Closing  Bid Price of the  Company's  Common  Stock
during the period  beginning on the date of the Default Notice and ending on the
payment date, as reported on the principal securities exchange or trading market
on which the Common Stock is traded.

     C.  Failure to Pay  Default  Amount.  If the  Corporation  fails to pay the
Default  Amount  within  five  (5)  business  days of its  receipt  of a  notice
requiring  such  payment  (a  "Default  Notice"),  then the  Holder (i) shall be
entitled  to  interest  on the  Default  Amount at a per annum rate equal to the
lower of  twenty-four  percent (24%) and the highest  interest rate permitted by
applicable  law from the date of the  Default  Notice  until the date of payment
hereunder,  and (ii) shall have the right, at any time and from time to time, to
require  the  Corporation,  upon  written  notice,  to  immediately  convert (in
accordance  with the terms of  Paragraph  A of Article IV) all or any portion of
the Default Amount, plus interest as aforesaid,  into shares of Common Stock and
Warrants at the lowest Conversion Price in effect during the period beginning on
the date of the Default Notice and ending on the Conversion Date with respect to
the conversion of such Default Amount.  In the event the Corporation is not able
to pay all amounts due and payable  with  respect to all  Debentures  subject to
Default  Notices,  the Corporation  shall pay the Holders such amounts pro rata,
based on the total amounts  payable to such Holder relative to the total amounts
payable to all Holders.

                                   ARTICLE IX

                       ADJUSTMENTS TO THE CONVERSION PRICE

     The  Conversion  Price shall be subject to adjustment  from time to time as
follows:

     A. Stock Splits, Stock Dividends,  Etc. If at any time on or after the date
of issuance of this Debenture,  the number of outstanding shares of Common Stock
is increased by a stock split, stock dividend, combination,  reclassification or
other  similar  event,  the  Fixed  Conversion  Price  shall be  proportionately
reduced,  or if the number of outstanding shares of Common Stock is decreased by
a reverse  stock split,  combination  or  reclassification  of shares,  or other
similar event, the Fixed


                                       14
<PAGE>

Conversion  Price  shall  be  proportionately  increased.  In  such  event,  the
Corporation shall notify the  Corporation's  transfer agent of such change on or
before the effective date thereof.

     B. [Intentionally Omitted]

     C.  Adjustment  Due to Merger,  Consolidation,  Etc.  If, at any time there
shall be (i) any  reclassification or change of the outstanding shares of Common
Stock (other than a change in par value,  or from par value to no par value,  or
from no par value to par value, or as a result of a subdivision or combination),
(ii) any consolidation or merger of the Corporation with any other entity (other
than a merger in which the Corporation is the surviving or continuing entity and
its  capital  stock  is  unchanged),  (iii)  any  sale  or  transfer  of  all or
substantially  all of the assets of the  Corporation  or (iv) any share exchange
pursuant to which all of the  outstanding  shares of Common Stock are  converted
into other  securities or property,  then the Holder shall  thereafter  have the
right to receive  upon  conversion,  in lieu of the  shares of Common  Stock and
Warrants  immediately  theretofore  issuable,  such shares of stock,  securities
and/or other property as may be issued or payable with respect to or in exchange
for the number of shares of Common  Stock and Warrants  immediately  theretofore
issuable upon  conversion  had such merger,  consolidation,  exchange of shares,
recapitalization,  reorganization or other similar event not taken place, and in
any such case,  appropriate  provisions shall be made with respect to the rights
and interests of the Holder to the end that the  provisions  hereof  (including,
without limitation, provisions for adjustment of the Conversion Price and of the
number of shares of Common Stock and Warrants  issuable upon  conversion of this
Debenture)  shall  thereafter be applicable,  as nearly as may be practicable in
relation to any shares of stock or securities  thereafter  deliverable  upon the
conversion thereof.  The Corporation shall not effect any transaction  described
in this  Paragraph C unless (i) the Holder has received  written  notice of such
transaction at least thirty (30) days prior thereto,  but in no event later than
ten (10) days prior to the record  date for the  determination  of  shareholders
entitled to vote with respect thereto;  provided,  however, that the Corporation
shall not be required to disclose any material inside  information to the Holder
prior to the public  disclosure  thereof,  and (ii) the  resulting  successor or
acquiring  entity (if not the  Corporation)  assumes by written  instrument  the
obligations of this Debenture.  The above  provisions  shall apply regardless of
whether  or not there  would have been a  sufficient  number of shares of Common
Stock  authorized  and available for issuance upon  conversion of the Debentures
outstanding and the Warrants issuable upon conversion  thereof as of the date of
such  transaction,  and shall similarly  apply to successive  reclassifications,
consolidations, mergers, sales, transfers or share exchanges.

     D. Adjustment Due to Distribution. If the Corporation shall declare or make
any  distribution  of its assets (or rights to acquire its assets) to holders of
Common Stock as a partial liquidating  dividend,  by way of return of capital or
otherwise   (including  any  dividend  or  distribution  to  the   Corporation's
shareholders in cash or shares (or rights to acquire shares) of capital stock of
a subsidiary  (i.e. a spin-off))  (a  "Distribution"),  then the Holder shall be
entitled,  upon any  conversion of this  Debenture  after the date of record for
determining shareholders entitled to such Distribution, to receive the amount of
such  assets  which would have been  payable to the Holder  with  respect to the
shares of Common Stock issuable upon such conversion had Holder been the holder


                                       15
<PAGE>

of such  shares of Common  Stock on the  record  date for the  determination  of
shareholders entitled to such Distribution.

     E. Issuance of Other Securities With Variable  Conversion Price. If, at any
time when prior to the first annual  anniversary of the Closing Date (as defined
in  the  Securities  Purchase  Agreement),   the  Corporation  shall  issue  any
securities   which  are  convertible  into  or  exchangeable  for  Common  Stock
("Convertible  Securities") at a conversion or exchange rate based on a discount
from the market price of the Common Stock at the time of conversion or exercise,
then the Variable  Conversion  Price in respect of any conversion of any portion
of this Debenture after such issuance shall be calculated utilizing the greatest
discount applicable to any such Convertible Securities.

     F. Purchase Rights. If the Corporation issues any Convertible Securities or
rights to purchase stock, warrants,  securities or other property (the "Purchase
Rights") pro rata to the record  holders of any class of Common Stock,  then the
Holder will be entitled to acquire,  upon the terms  applicable to such Purchase
Rights,  the aggregate  Purchase  Rights which the Holder could have acquired if
Holder had held the number of shares of Common Stock  acquirable  upon  complete
conversion of this  Debenture  immediately  before the date on which a record is
taken for the grant,  issuance or sale of such Purchase  Rights,  or, if no such
record is taken,  the date as of which the record holders of Common Stock are to
be determined for the grant, issue or sale of such Purchase Rights.

     G.  Notice  of  Adjustments.  Upon the  occurrence  of each  adjustment  or
readjustment  of  the  Conversion   Price  pursuant  to  this  Article  IX,  the
Corporation,   at  its  expense,  shall  promptly  compute  such  adjustment  or
readjustment  and prepare and furnish to the Holder a certificate  setting forth
such adjustment or readjustment  and showing in detail the facts upon which such
adjustment or readjustment is based.  The  Corporation  shall,  upon the written
request at any time of  Holder,  furnish  to Holder a like  certificate  setting
forth (i) such adjustment or readjustment, (ii) the Conversion Price at the time
in effect and (iii) the number of shares of Common  Stock and  Warrants  and the
amount,  if any,  of other  securities  or  property  which at the time would be
received upon conversion of this Debenture.

                                    ARTICLE X

                                  MISCELLANEOUS

     A. Failure or Indulgency Not Waiver. No failure or delay on the part of the
Holder in the exercise of any power, right or privilege  hereunder shall operate
as a waiver thereof, nor shall any single or partial exercise of any such power,
right or privilege  preclude other or further  exercise  thereof or of any other
right, power or privilege.

     B. Notices. Any notice herein required or permitted to be given shall be in
writing and may be personally served or delivered by courier and shall be deemed
to have been given upon


                                       16
<PAGE>

receipt (which shall include  telephone line  facsimile  transmission).  For the
purposes  hereof,  the address of the Holder shall be as shown on the records of
the  Corporation;  and the  address of the  Corporation  shall be 45472  Holiday
Drive, Sterling,  Virginia 20166, Attention:  Chief Financial Officer; Facsimile
Number:  (703)  318-4315,  with a copy to Amon & Sabatini,  L.L.P.,  437 Madison
Avenue,  New York, New York 10022,  Attention:  Thomas Amon;  Facsimile  Number:
(212) 980- 3075.  Both the Holder and the  Corporation may change the address or
facsimile number for service by service of written notice to the other as herein
provided.

     C. Amendment Provision. This Debenture and any provision hereof may only be
amended by an instrument in writing signed by the  Corporation  and the Majority
Holders.  The term  "Debenture" and all references  thereto,  as used throughout
this instrument,  shall mean this instrument as originally executed, or if later
amended or supplemented, then as so amended or supplemented.

     D. Assignability.  This Debenture shall be binding upon the Corporation and
its  successors and assigns and shall inure to the benefit of the Holder and its
successors  and  assigns.  The  Holder  shall  notify the  Corporation  upon the
assignment  of this  Debenture.  In the event a Holder  shall sell or  otherwise
transfer any portion of this Debenture, each transferee shall be allocated a pro
rata portion of such transferor's Cap Amount and Reserved Amount. Any portion of
the Cap Amount or  Reserved  Amount  which  remains  allocated  to any person or
entity which does not hold any  Debentures  shall be allocated to the  remaining
holders  of  Debentures,  pro  rata  based  on the  total  principal  amount  of
Debentures  then  held by such  Holders.  Each  Holder  agrees  that it will not
transfer less than $200,000 of principal amount of Debentures to any transferee.

     E. Cost of  Collection.  If default is made in any manner  with  respect to
this Debenture, the Corporation shall pay the Holder hereof costs of collection,
including reasonable attorneys' fees.

     F.  Governing  Law.  This  Debenture  shall be governed by and construed in
accordance  with the laws of the State of New York  applicable to contracts made
and to be  performed  in the  State of New  York.  The  Corporation  irrevocably
consents to the  jurisdiction of the United States federal courts located in New
York,  New  York in any  suit or  proceeding  based  on or  arising  under  this
Agreement  and  irrevocably  agrees  that all  claims in respect of such suit or
proceeding may be determined in such courts. The Corporation  irrevocably waives
the  defense  of an  inconvenient  forum  to the  maintenance  of  such  suit or
proceeding.  The  Corporation  further  agrees that  service of process upon the
Corporation,  mailed  by first  class  mail  shall be  deemed  in every  respect
effective  service  of  process  upon  the  Corporation  in  any  such  suit  or
proceeding.  Nothing  herein shall affect the Holder's right to serve process in
any  other  manner  permitted  by  law.  The  Corporation  agrees  that a  final
non-appealable  judgment in any such suit or proceeding  shall be conclusive and
may be enforced in other  jurisdictions by suit on such judgment or in any other
lawful manner.

     G.  Denominations.  At the request of the Holder,  upon  surrender  of this
Debenture,  the Corporation shall promptly issue new Debentures in the aggregate
outstanding  principal amount hereof, in the form hereof, in such  denominations
of at least $100,000 as the Holder shall request.


                                       17
<PAGE>

     H.  Lost or Stolen  Debentures.  Upon  receipt  by the  Corporation  of (i)
evidence of the loss,  theft,  destruction  or mutilation of this  Debenture and
(ii) (y) in the case of loss,  theft or  destruction,  of  indemnity  reasonably
satisfactory  to  the  Corporation,  or  (z) in the  case  of  mutilation,  upon
surrender and cancellation of this Debenture,  the Corporation shall execute and
deliver new Debentures,  in the form hereof,  in such  denominations of at least
$100,000  as the Holder  may  request.  However,  the  Corporation  shall not be
obligated   to   reissue   such  lost  or  stolen   Debentures   if  the  Holder
contemporaneously requests the Corporation to convert this Debenture.

     I. Statements of Available  Shares.  Upon request,  the  Corporation  shall
deliver to Holder a written report  notifying the Holder of any occurrence which
prohibits the  Corporation  from issuing  Common Stock or Warrants upon any such
conversion.  The report shall also specify (i) the total principal amount of all
outstanding  Debentures as of the date of the request,  (ii) the total number of
shares of Common Stock and Warrants  issued upon all  conversions  of Debentures
through  the date of the  request,  (iii) the  total  number of shares of Common
Stock issued upon exercise of all Warrants through the date of the request, (iv)
the total number of shares of Common Stock which are reserved for issuance  upon
conversion of Debentures  and exercise of Warrants as of the date of the request
and (v) the total  number of shares of  Common  Stock  which may  thereafter  be
issued by the Corporation upon conversion of Debentures and exercise of Warrants
before the Corporation would exceed the Cap Amount and the Reserved Amount.  The
Corporation  shall  provide,  within  fifteen  (15) days after  delivery  to the
Corporation of a written request by Holder, all of the information enumerated in
clauses (i) - (v) of this Paragraph I.

     J. Payment of Cash; Defaults.  Whenever the Corporation is required to make
any cash  payment  to Holder  under  this  Debenture  (as a  Conversion  Default
Payment,  Default Amount or  otherwise),  such cash payment shall be made to the
Holder  within  five (5)  business  days  after  delivery  by Holder of a notice
specifying that the Holder elects to receive such payment in cash and the method
(e.g.,  by check,  wire  transfer) in which such payment should be made. If such
payment is not delivered within such five (5) business day period,  Holder shall
thereafter  be entitled  to  interest  on the unpaid  amount at a per annum rate
equal to the lower of  twenty-four  percent (24%) and the highest  interest rate
permitted  by  applicable  law until such  amount is paid in full to the Holder.
Payment of interest under this Article X.J. is in lieu of and not in addition to
the interest provided for in clause (i) of Article VIII.C.

     K. Restrictions on Shares. The shares of Common Stock and Warrants issuable
upon conversion of this Debenture may not be sold or transferred unless (i) they
first shall have been registered  under the Securities Act and applicable  state
securities laws, (ii) the Corporation  shall have been furnished with an opinion
of legal counsel (in form,  substance  and scope  customary for opinions in such
circumstances)  to the  effect  that such sale or  transfer  is exempt  from the
registration  requirements of the Securities Act or (iii) they are sold pursuant
to Rule 144  under the Act.  Except  as  otherwise  provided  in the  Securities
Purchase  Agreement,  each  certificate  for shares of Common Stock and Warrants
issuable upon  conversion of this Debenture that have not been so registered and
that have not been sold  pursuant to an exemption  that  permits  removal of the
legend, shall bear a legend substantially in the following form, as appropriate:


                                       18
<PAGE>


          THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THE
          SECURITIES  HAVE BEEN ACQUIRED FOR INVESTMENT AND MAY NOT BE
          SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF AN EFFECTIVE
          REGISTRATION   STATEMENT  FOR  THE   SECURITIES   UNDER  THE
          SECURITIES ACT OF 1933, AS AMENDED, OR AN OPINION OF COUNSEL
          IN FORM,  SUBSTANCE AND SCOPE CUSTOMARY FOR OPINIONS IN SUCH
          CIRCUMSTANCES  THAT  REGISTRATION IS NOT REQUIRED UNDER SAID
          ACT OR UNLESS SOLD  PURSUANT TO RULE 144 UNDER SAID ACT. ANY
          SUCH SALE,  ASSIGNMENT  OR  TRANSFER  MUST ALSO  COMPLY WITH
          APPLICABLE STATE SECURITIES LAWS.

Upon the request of a holder of a certificate  representing any shares of Common
Stock or Warrants  issuable upon conversion of this  Debenture,  the Corporation
shall remove the foregoing legend from the certificate or issue to such holder a
new certificate  therefor free of any transfer legend, if (i) with such request,
the Corporation  shall have received either (A) an opinion of counsel,  in form,
substance and scope customary for opinions in such circumstances,  to the effect
that any such legend may be removed from such  certificate,  or (B) satisfactory
representations  from the Holder that  Holder is eligible to sell such  security
pursuant to Rule 144 or (ii) a registration  statement  under the Securities Act
covering such securities is in effect. Nothing in this Debenture shall (i) limit
the Corporation's  obligation under the Registration  Rights Agreement,  or (ii)
affect in any way the Holder's obligations to comply with applicable  securities
laws upon the resale of the securities referred to herein.

     L. Status as Debentureholder.  Upon submission of a Notice of Conversion by
Holder,  the principal amount of this Debenture and the interest thereon covered
thereby shall be deemed  converted  into shares of Common Stock and the holder's
rights with respect thereto shall cease and terminate,  excepting only the right
to receive  certificates  for such  shares of Common  Stock and to any  remedies
provided herein or otherwise  available at law or in equity to Holder because of
a  failure  by the  Corporation  to  comply  with the  terms of this  Debenture.
Notwithstanding the foregoing,  if Holder has not received  certificates for all
shares  of  Common  Stock  prior to the  tenth  (10th)  business  day  after the
expiration of the Delivery  Period with respect to a conversion  for any reason,
then (unless Holder  otherwise elects to retain its status as a holder of Common
Stock) the portion of the principal  amount and interest thereon subject to such
conversion shall be deemed  outstanding under this Debenture and the Corporation
shall,  as soon as  practicable,  return this  Debenture  to the Holder.  In all
cases,  Holder shall retain all of its rights and remedies  (including,  without
limitation,  (i) the right to receive  Conversion  Default Payments  pursuant to
Article VI.A to the extent required thereby for such Conversion  Default and any
subsequent  Conversion  Default and (ii) the right to have the Conversion  Price
with respect to subsequent  conversions  determined  in accordance  with Article
VI.B) for the Corporation's failure to convert this Debenture.


                                       19
<PAGE>

     M. Remedies  Cumulative.  The remedies  provided in this Debenture shall be
cumulative and in addition to all other remedies available under this Debenture,
at law or in equity  (including  a decree of specific  performance  and/or other
injunctive  relief),  and nothing  herein shall limit  Holder's  right to pursue
actual  damages for any failure by the  Corporation  to comply with the terms of
this  Debenture.  The  Corporation  acknowledges  that  a  breach  by it of  its
obligations  hereunder  will cause  irreparable  harm to the Holder and that the
remedy at law for any such breach may be inadequate.  The Corporation  therefore
agrees, in the event of any such breach or threatened  breach,  the Holder shall
be  entitled,  in addition to all other  available  remedies,  to an  injunction
restraining  any breach,  without the  necessity  of showing  economic  loss and
without any bond or other security being required.

     N. Required Conversion Into Preferred Stock.

          (i) At any time during the first six (6) months following the Issuance
Date (the "Required Conversion Period") that the Required Conversion  Conditions
(as defined in subparagraph  (iii) below) are satisfied,  the Corporation  shall
have the right to require the  conversion  of all (but not less than all) of the
outstanding  principal  amount of this Debenture into that number of shares of a
to-be created series of the Company's  preferred stock having the  designations,
preferences and rights set forth in the Certificate of Designations, Preferences
and Rights  attached  to the  Securities  Purchase  Agreement  as Exhibit F (the
"Series  A  Preferred  Stock")  which  have a total  face  amount  equal to such
principal  amount (a "Required  Conversion").  The Corporation may exercise such
right by delivery of a Required  Conversion  Notice (as defined in  subparagraph
(ii)  below)  during  the  Required  Conversion  Period in  accordance  with the
procedures  set forth  below.  Holder  may  convert  all or any  portion of this
Debenture  into  Common  Stock by  delivering  a  Notice  of  Conversion  to the
Corporation at any time prior to the Effective  Date of Required  Conversion (as
defined in subparagraph (ii) below).

          (ii) The  Corporation  shall effect a Required  Conversion  under this
Paragraph N by giving at least five (5) business days but not more than ten (10)
business days prior written  notice (the  "Required  Conversion  Notice") of the
date which such Required  Conversion is to become effective (the "Effective Date
of Required  Conversion") to Holder,  which Required  Conversion Notice shall be
deemed to have been  delivered on the business day after the  Corporation's  fax
(with a copy sent by  overnight  courier)  of such  notice to  Holder.  Upon the
surrender of this Debenture,  the Corporation  shall issue and deliver to Holder
the shares of Series A  Preferred  Stock to which  Holder is  entitled  upon the
Required Conversion.

          (iii) The "Required Conditions" shall consist of the following:

               (a) no Event of Default shall have occurred;

               (b) the Common Stock shall be authorized  for quotation on Nasdaq
and  trading  in the  Common  Stock (or  Nasdaq  generally)  shall not have been
suspended;


                                       20
<PAGE>

               (c) Holder shall have  received an officer's  certificate  in the
form attached as Exhibit A attached hereto;

               (d) the  Certificate of Designation  shall have been accepted for
filing with the  Secretary of State of Virginia and a copy thereof  certified by
the Secretary of State of Virginia shall have been delivered to Holder;

               (e) Holder  shall  have  received  an  opinion  of the  Company's
counsel,  dated as of the Effective Date of Required Conversion,  in form, scope
and substance reasonably satisfactory to Holder and in substantially the form of
Exhibit B attached hereto;

     O.  Force  Majeure.  Neither  the  Corporation  nor  the  Holder  shall  be
responsible  for any delay or failure to perform any part of this  Debenture  to
the  extent  that  such  delay or  failure  is  solely  caused  by fire,  flood,
earthquake,  explosion,  war, labor strike, riot, act of governmental,  civil or
military authority which imposes a moratorium on the performance of the specific
obligation  in  question  or other  comparable  extraordinary  event  beyond the
Corporation's  or Holder's  control.  Notice with full details of any such event
shall  be  given to the  other  party  as  promptly  as  practicable  after  its
occurrence.  The  affected  party  shall use its best  efforts to  minimize  the
effects  of or end any such event so as to  facilitate  the  resumption  of full
performance hereunder.

                  [Remainder of Page Intentionally Left Blank]


                                       21
<PAGE>

     IN WITNESS WHEREOF,  Borrower has caused this Debenture to be signed in its
name by its duly authorized officer this 9th day of April, 1997.


                                       FASTCOMM COMMUNICATIONS CORPORATION


                                       By:______________________________________
                                            Name:
                                            Title:




                                       22
<PAGE>

                                                                       Exhibit 1

                              NOTICE OF CONVERSION

The undersigned  hereby irrevocably  elects to convert  $____________  principal
amount of the  Debenture and all accrued and unpaid  interest on such  principal
amount  (i.e.,  $_________)  (the  "Conversion"),  into  shares of common  stock
("Common  Stock")  and  Warrants  of FastComm  Communications  Corporation  (the
"Corporation")  according to the  conditions of the  Convertible  Term Debenture
dated  April 9,  1997  (the  "Debenture"),  as of the  date  written  below.  If
securities are to be issued in the name of a person other than the  undersigned,
the undersigned will pay all transfer taxes payable with respect thereto. No fee
will be charged to the holder for any conversion,  except for transfer taxes, if
any. A copy of the Debenture is attached  hereto (or evidence of loss,  theft or
destruction thereof).

The  undersigned  represents  and  warrants  that all  offers  and  sales by the
undersigned of the securities  issuable to the  undersigned  upon  conversion of
this Debenture  shall be made pursuant to registration of the Common Stock under
the Securities Act of 1933, as amended (the "Act"),  or pursuant to an exemption
from registration under the Act.

In the event of partial exercise, please reissue an appropriate Debenture(s) for
the principal balance which shall not have been converted.

                               Date of Conversion:___________________________   
                               
                               Applicable Conversion Price:____________________
                               
                               Amount of Conversion Default Payments
                               to be Converted, if any:______________________
                               
                               Number of Shares of
                               Common Stock to be Issued:_____________________
                               
                               Number of Warrants to be Issued:_________________
                               
                               Signature:____________________________________
                               
                               Name:_______________________________________
                               
                               Address:______________________________________
                               
ACKNOWLEDGED AND AGREED:

FASTCOMM COMMUNICATIONS CORPORATION

BY:___________________________
NAME:________________________
TITLE:________________________                          DATE:___________________

* The  Corporation  is not  required to issue shares of Common Stock or Warrants
until the original Debenture (or evidence of loss, theft or destruction  thereof
and  reasonable  indemnity,  if  requested)  to be converted are received by the
Corporation  or its  transfer  agent.  The  Corporation  shall issue and deliver
shares of Common Stock and  Warrants to an overnight  courier not later than the
later  of (a) two  (2)  business  days  following  receipt  of  this  Notice  of
Conversion and (b) the date of surrender of this Debenture (or evidence of loss,
theft or destruction thereof), and shall make payments pursuant to the Debenture
for the failure to make timely delivery.



               VOID AFTER 5:00 P.M. NEW YORK CITY
               TIME ON [INSERT DATE]                              EXHIBIT B
                                                                  to Securities
                                                                  Purchase
                                                                  Agreement

               THIS  WARRANT  AND THE  SHARES  ISSUABLE  UPON  EXERCISE  OF THIS
               WARRANT  HAVE NOT BEEN  REGISTERED  UNDER THE  SECURITIES  ACT OF
               1933, AS AMENDED (THE "SECURITIES ACT") OR THE SECURITIES LAWS OF
               ANY STATE. THE SECURITIES  REPRESENTED HEREBY MAY NOT BE OFFERED,
               SOLD  OR  OTHERWISE   TRANSFERRED   UNLESS  THE   SECURITIES  ARE
               REGISTERED   UNDER  THE  SECURITIES  ACT  AND  APPLICABLE   STATE
               SECURITIES  LAWS,  OR ANY SUCH  OFFER,  SALE OR  TRANSFER IS MADE
               PURSUANT  TO  AN  AVAILABLE   EXEMPTION  FROM  THE   REGISTRATION
               REQUIREMENTS OF THOSE LAWS.

                                          Right to Purchase _______Shares of
                                          Common Stock, par value $.01 per share

Date: _________ ___, _____

                       FASTCOMM COMMUNICATIONS CORPORATION
                             STOCK PURCHASE WARRANT

     THIS CERTIFIES THAT, for value received,  _____________________________  or
its  registered  assigns,  is entitled to purchase from FASTCOMM  COMMUNICATIONS
CORPORATION, a Virginia corporation (the "Company"), at any time or from time to
time  during the period  specified  in Section 2 hereof,  ___________  (_______)
fully paid and  nonassessable  shares of the Company's  common stock,  par value
$.01 per share  (the  "Common  Stock"),  at an  exercise  price  per share  (the
"Exercise  Price")  equal to one hundred and twenty five  percent  (125%) of the
Market Price (as defined in Section  4(1)(ii) hereof) of the Common Stock on the
date of  issuance  hereof.  The  number of shares  of Common  Stock  purchasable
hereunder  (the  "Warrant  Shares")  and  the  Exercise  Price  are  subject  to
adjustment  as  provided  in Section 4 hereof.  The term  "Warrants"  means this
Warrant and the other warrants of the Company issued upon  conversion of (i) the
Company's  convertible  debentures due April 9, 2001 (the "Debentures") and (ii)
shares of Series A Convertible Preferred Stock of the Company.


<PAGE>

     This Warrant is subject to the following terms, provisions, and conditions:

     1.  Manner of  Exercise;  Issuance  of  Certificates;  Payment  for Shares.
Subject to the provisions hereof, including, without limitation, the limitations
contained  in Section 7 hereof,  this  Warrant  may be  exercised  by the holder
hereof, in whole or in any part consisting of not less than ten percent (10%) of
the then issuable  Warrant  Shares,  by the surrender of this Warrant,  together
with a completed  exercise  agreement in the form attached hereto (the "Exercise
Agreement"),  to the Company during normal business hours on any business day at
the Company's principal executive offices (or such other office or agency of the
Company  as it may  designate  by notice  to the  holder  hereof),  and upon (i)
payment to the Company in cash,  by certified or official  bank check or by wire
transfer for the account of the Company,  of the Exercise  Price for the Warrant
Shares specified in the Exercise  Agreement or (ii) if the resale of the Warrant
Shares  by  the  holder  is  not  then  registered   pursuant  to  an  effective
registration  statement  under  the  Securities  Act of 1933,  as  amended  (the
"Securities Act"), delivery to the Company of a written notice of an election to
effect a Cashless  Exercise (as defined in Section  11(c) below) for the Warrant
Shares  specified in the  Exercise  Agreement.  The Warrant  Shares so purchased
shall be deemed to be issued to the holder hereof or such holder's designee,  as
the record  owner of such  shares,  as of the close of  business  on the date on
which this Warrant shall have been surrendered, the completed Exercise Agreement
shall have been  delivered,  and payment shall have been made for such shares as
set forth above. Certifi cates for the Warrant Shares so purchased, representing
the aggregate  number of shares  specified in the Exercise  Agreement,  shall be
delivered to the holder hereof within a reasonable time, not exceeding three (3)
business days, after this Warrant shall have been so exercised. The certificates
so delivered  shall be in such  denominations  as may be requested by the holder
hereof and shall be  registered in the name of such holder or such other name as
shall be  designated by such holder.  If this Warrant shall have been  exercised
only in part, then,  unless this Warrant has expired,  the Company shall, at its
expense,  at the time of delivery of such certificates,  deliver to the holder a
new Warrant representing the number of shares with respect to which this Warrant
shall not then have been exercised.

     If, at any time, a holder of this Warrant submits this Warrant, an Exercise
Agreement  and  payment  to the  Company of the  Exercise  Price for each of the
Warrant  Shares  specified in the Exercise  Agreement,  and the Company does not
have  sufficient  authorized  but unissued  shares of Common Stock  available to
effect such  exercise in  accordance  with the  provisions of this Section 1 (an
"Exercise Default"),  the Company shall issue to the holder all of the shares of
Common Stock which are available to effect such  exercise  and,  within five (5)
business  days of the attempted  exercise of this Warrant,  refund to the holder
that portion of the  holder's  payment of the  Exercise  Price  allocable to the
number of shares  of Common  Stock  included  in the  Exercise  Agreement  which
exceeds the amount which is then issuable by the Company (the "Excess  Amount").
The Excess  Amount  shall,  notwithstanding  anything to the contrary  contained
herein,  not be exercisable for Common Stock in accordance with the terms hereof
until (and at the holder's option on or at any


                                      -2-
<PAGE>

time after) the date  additional  shares of Common Stock are  authorized  by the
Company to permit such  exercise.  The Company shall pay to the holder  payments
("Exercise  Default  Payments")  for an  Exercise  Default  in the amount of (a)
(N/365),  multiplied by (b) the difference  between the Market Price (as defined
in Section 4(1) below) on the Exercise  Default Date (as defined below) less the
Exercise  Price,  multiplied  by (c) the Excess  Amount on the date the Exercise
Agreement  giving rise to the Exercise Default is transmitted in accordance with
this Section 1 (the "Exercise  Default Date"),  multiplied by (d) .24, where N =
the  number  of  days  from  the   Exercise   Default  Date  to  the  date  (the
"Authorization  Date") that the Company authorizes a sufficient number of shares
of Common Stock to effect  exercise of this Warrant in full.  The Company  shall
send notice to the holder of the  authorization  of additional  shares of Common
Stock,  the  Authorization  Date and the  amount of  holder's  accrued  Exercise
Default  Payments.  The accrued Exercise Default Payment for each calendar month
shall be paid in cash or shall be convertible  into Common Stock at the Exercise
Price, at the holder's option, as follows:

          (a) In the event  holder  elects to take such  payment  in cash,  cash
payment  shall be made to holder by the fifth  (5th) day of the month  following
the month in which it has accrued; and

          (b) In the event holder  elects to take such payment in Common  Stock,
the holder may convert  such  payment  amount into Common  Stock at the Exercise
Price (as in effect at the time of conversion) at any time after the fifth (5th)
day of the month  following  the month in which it has  accrued as  computed  in
accordance with the terms contained in Article VI of the Debentures.

          Nothing herein shall limit the holder's right to pursue actual damages
for the Company's  failure to maintain a sufficient  number of authorized shares
of  Common  Stock as  required  pursuant  to the terms of  Section  4(f) of that
certain Securities Purchase Agreement, dated as of April 9, 1997, by and between
the  Company  and the  purchaser  listed  on the  execution  page  thereof  (the
"Securities Purchase  Agreement"),  or to otherwise issue shares of Common Stock
upon  exercise of this Warrant in  accordance  with the terms  hereof,  and each
holder shall have the right to pursue all remedies available at law or in equity
(including a decree of specific performance and/or injunctive relief).

     2. Period of Exercise. This Warrant is exercisable at any time or from time
to time on or after the date on which this  Warrant  is issued  and before  5:00
p.m. New York City time on the fifth (5th)  anniversary  of the date of issuance
(the "Exercise Period").


                                      -3-
<PAGE>

     3. Certain  Agreements  of the Company.  The Company  hereby  covenants and
agrees as follows:

          (a) Shares to be Fully Paid. All Warrant Shares will, upon issuance in
accordance with the terms of this Warrant,  be validly  issued,  fully paid, and
nonassessable and free from all taxes, liens, claims and encumbrances.

          (b)  Reservation of Shares.  During the Exercise  Period,  the Company
shall at all times have  authorized,  and  reserved  for the purpose of issuance
upon exercise of this Warrant,  a sufficient number of shares of Common Stock to
provide for the exercise of this Warrant.

          (c)  Listing.  The Company  shall  promptly  secure the listing of the
shares of Common Stock issuable upon exercise of this Warrant upon each national
securities  exchange or automated quotation system, if any, upon which shares of
Common  Stock are then listed or become  listed  (subject to official  notice of
issuance upon exercise of this Warrant) and shall maintain, so long as any other
shares of Common Stock shall be so listed,  such listing of all shares of Common
Stock from time to time  issuable  upon the  exercise of this  Warrant;  and the
Company  shall  so  list on  each  national  securities  exchange  or  automated
quotation  system,  as the case may be, and shall  maintain such listing of, any
other shares of capital stock of the Company  issuable upon the exercise of this
Warrant if and so long as any  shares of the same class  shall be listed on such
national securities exchange or automated quotation system.

          (d) Certain Actions Prohibited.  The Company will not, by amendment of
its charter or through any  reorganization,  transfer of assets,  consolidation,
merger, dissolution, issue or sale of securities, or any other voluntary action,
avoid or seek to avoid the  observance or  performance of any of the terms to be
observed  or  performed  by it  hereunder,  but will at all times in good  faith
assist in the  carrying  out of all the  provisions  of this  Warrant and in the
taking of all such action as may  reasonably  be requested by the holder of this
Warrant in order to protect the exercise privilege of the holder of this Warrant
against dilution or other  impairment,  consistent with the tenor and purpose of
this Warrant as specified in Section 4 below.  Without  limiting the general ity
of the foregoing,  the Company (i) will not increase the par value of any shares
of Common Stock  receivable upon the exercise of this Warrant above the Exercise
Price then in effect, and (ii) will take all such actions as may be necessary or
appropriate  in order that the Company may validly and legally  issue fully paid
and nonassessable shares of Common Stock upon the exercise of this Warrant.

          (e)  Successors  and  Assigns.  This  Warrant will be binding upon any
entity succeeding to the Company by merger, consolidation, or acquisition of all
or substantially all of the Company's assets.


                                      -4-
<PAGE>

     4. Antidilution Provisions. After the initial issuance of this Warrant, the
Exercise  Price and the number of Warrant  Shares shall be subject to adjustment
from time to time as provided in this Section 4.

     In the event that any adjustment of the Exercise  Price as required  herein
results in a fraction of a cent, such Exercise Price shall be rounded up or down
to the nearest cent.

          (a) Adjustment of Exercise Price and Number of Shares upon Issuance of
Common Stock.  Except as otherwise provided in Sections 4(c) and 4(e) hereof, if
and whenever after the initial  issuance of this Warrant,  the Company issues or
sells,  or in  accordance  with  Section 4(b) hereof is deemed to have issued or
sold, any shares of Common Stock for no consideration or for a consideration per
share  less  than the  Market  Price  (as  hereinafter  defined)  on the date of
issuance (a "Dilutive  Issuance"),  then effective immediately upon the Dilutive
Issuance,  the Exercise Price will be adjusted in accordance  with the following
formula:


   E'   =   E    x           O + P/M
                          ------------
                              CSDO

   where:

   E'   =   the adjusted Exercise Price;
   E    =   the then current Exercise Price;
   M    =   the then current Market Price (as defined in Section 4(1));
   O    =   the number of shares of Common Stock outstanding immediately
            prior to the Dilutive Issuance;
   P    =   the aggregate consideration, calculated as set forth in Section 4(b)
            hereof, received by the Company upon such Dilutive Issuance; and
   CSDO =   the total  number of shares  of  Common Stock Deemed Outstanding (as
            defined in Section 4(l)) immediately after the Dilutive Issuance.

          (b)  Effect on  Exercise  Price of Certain  Events.  For  purposes  of
determining the adjusted Exercise Price under Section 4(a) hereof, the following
will be applicable:

               (i)  Issuance of Rights or Options.  If the Company in any manner
issues or grants any  warrants,  rights or options,  whether or not  immediately
exercisable,  to subscribe for or to purchase  Common Stock or other  securities
exercisable,  convertible  into or exchangeable  for Common Stock  ("Convertible
Securities")  (such  warrants,  rights and options to purchase  Common  Stock or
Convertible  Securities are hereinafter  referred to as "Options") and the price
per share for which Common  Stock is issuable  upon the exercise of such Options
is less than the Market Price on


                                      -5-
<PAGE>

the date of issuance of such Options ("Below Market Options"),  then the maximum
total  number of shares of Common Stock  issuable  upon the exercise of all such
Below  Market  Options  (assuming  full  exercise,  conversion  or  exchange  of
Convertible  Securities,  if applicable) will, as of the date of the issuance or
grant of such Below Market Options, be deemed to be outstanding and to have been
issued and sold by the  Company  for such price per share.  For  purposes of the
preceding sentence, the "price per share for which Common Stock is issuable upon
the exercise of such Below  Market  Options" is  determined  by dividing (i) the
total amount, if any, received or receivable by the Company as consideration for
the  issuance  or granting of all such Below  Market  Options,  plus the minimum
aggregate  amount of additional  consideration,  if any,  payable to the Company
upon the  exercise  of all  such  Below  Market  Options,  plus,  in the case of
Convertible  Securities issuable upon the exercise of such Below Market Options,
the  minimum  aggregate  amount of  additional  consideration  payable  upon the
exercise, conversion or exchange thereof at the time such Convertible Securities
first become exercisable, convertible or exchangeable, by (ii) the maximum total
number of shares of Common  Stock  issuable  upon the exercise of all such Below
Market  Options  (assuming  full  conversion  of  Convertible   Securities,   if
applicable).  No further  adjustment to the Exercise Price will be made upon the
actual  issuance of such  Common  Stock upon the  exercise of such Below  Market
Options or upon the exercise,  conversion or exchange of Convertible  Securities
issuable upon exercise of such Below Market Options.

               (ii) Issuance of Convertible Securities.

                    (A) If the  Company  in  any  manner  issues  or  sells  any
Convertible Securities, whether or not immediately convertible (other than where
the same are issuable  upon the exercise of Options) and the price per share for
which Common Stock is issuable  upon such  exercise,  conversion or exchange (as
determined  pursuant  to Section  4(b)(ii)(B)  if  applicable)  is less than the
Market Price on the date of issuance, then the maximum total number of shares of
Common Stock  issuable  upon the  exercise,  conversion  or exchange of all such
Convertible  Securities will, as of the date of the issuance of such Convertible
Securities,  be deemed to be outstanding and to have been issued and sold by the
Company for such price per share.  For the purposes of the  preceding  sentence,
the "price per share for which  Common  Stock is  issuable  upon such  exercise,
conversion or exchange" is determined by dividing (i) the total amount,  if any,
received or receivable by the Company as consideration  for the issuance or sale
of all  such  Convertible  Securities,  plus the  minimum  aggregate  amount  of
additional  consideration,  if any,  payable to the Company  upon the  exercise,
conversion or exchange  thereof at the time such  Convertible  Securities  first
become  exercisable,  convertible  or  exchangeable,  by (ii) the maximum  total
number of shares of Common  Stock  issuable  upon the  exercise,  conversion  or
exchange  of all such  Convertible  Securities.  No  further  adjustment  to the
Exercise  Price will be made upon the actual  issuance of such Common Stock upon
exercise, conversion or exchange of such Convertible Securities.


                                      -6-
<PAGE>

                    (B) If the  Company  in  any  manner  issues  or  sells  any
Convertible  Securities  with a  fluctuating  conversion  or  exercise  price or
exchange  ratio (a "Variable  Rate  Convertible  Security"),  then the price per
share for which  Common  Stock is issuable  upon such  exercise,  conversion  or
exchange for purposes of the  calculation  contemplated  by Section  4(b)(ii)(A)
shall be deemed to be the  lowest  price per  share  which  would be  applicable
(assuming all holding period and other conditions to any discounts  contained in
such  Convertible  Security have been satisfied) if the Market Price on the date
of issuance of such  Convertible  Security  was 75% of the Market  Price on such
date (the "Assumed Variable Market Price").  Further, if the Market Price at any
time or times  thereafter is less than or equal to the Assumed  Variable  Market
Price last used for making any  adjustment  under this Section 4 with respect to
any Variable Rate  Convertible  Security,  the Exercise  Price in effect at such
time shall be readjusted  to equal the Exercise  Price which would have resulted
if the Assumed  Variable  Market  Price at the time of issuance of the  Variable
Rate Convertible  Security had been 75% of the Market Price existing at the time
of the adjustment required by this sentence.

               (iii) Change in Option Price or  Conversion  Rate.  If there is a
change at any time in (i) the amount of additional  consideration payable to the
Company  upon the  exercise  of any  Options;  (ii)  the  amount  of  additional
consideration,  if any, payable to the Company upon the exercise,  conversion or
exchange  of any  Convertible  Securities;  or  (iii)  the  rate  at  which  any
Convertible  Securities are convertible  into or  exchangeable  for Common Stock
(other  than  under or by reason  of  provisions  designed  to  protect  against
dilution),  the  Exercise  Price in  effect at the time of such  change  will be
readjusted  to the  Exercise  Price which would have been in effect at such time
had such Options or Convertible  Securities still outstanding  provided for such
changed additional consideration or changed conversion rate, as the case may be,
at the time initially granted, issued or sold.

               (iv)  Treatment of Expired  Options and  Unexercised  Convertible
Securities. If, in any case, the total number of shares of Common Stock issuable
upon  exercise  of any Option or upon  exercise,  conversion  or exchange of any
Convertible  Securities is not, in fact,  issued and the rights to exercise such
Option or to exercise,  convert or exchange such  Convertible  Securities  shall
have expired or terminated, the Exercise Price then in effect will be readjusted
to the  Exercise  Price  which  would  have  been in  effect at the time of such
expiration or  termination  had such Option or  Convertible  Securities,  to the
extent  outstanding  immediately prior to such expiration or termination  (other
than in respect  of the  actual  number of shares of Common  Stock  issued  upon
exercise or conversion thereof), never been issued.

               (v) Calculation of Consideration  Received.  If any Common Stock,
Options or  Convertible  Securities  are issued,  granted or sold for cash,  the
consideration  received therefor for purposes of this Warrant will be the amount
received by the Company  therefor,  before deduction of reasonable  commissions,
underwriting discounts or allowances or other reasonable


                                      -7-
<PAGE>

expenses paid or incurred by the Company in connection with such issuance, grant
or sale. In case any Common Stock, Options or Convertible  Securities are issued
or sold for a  consideration  part or all of which shall be other than cash, the
amount of the consideration  other than cash received by the Company will be the
fair  market  value  of such  consideration,  except  where  such  consideration
consists of securities,  in which case the amount of  consideration  received by
the Company will be the Market Price thereof as of the date of receipt.  In case
any Common Stock,  Options or  Convertible  Securities  are issued in connection
with  any  merger  or  consolidation  in  which  the  Company  is the  surviving
corporation,  the amount of consideration therefor will be deemed to be the fair
market value of such portion of the net assets and business of the non-surviving
corporation  as is  attributable  to such Common Stock,  Options or  Convertible
Securities, as the case may be. The fair market value of any consideration other
than cash or securities will be determined in good faith by an investment banker
or other appropriate expert of national  reputation  selected by the Company and
reasonably  acceptable to the holder hereof, with the costs of such appraisal to
be borne by the Company.

               (vi) Exceptions to Adjustment of Exercise Price. No adjustment to
the Exercise  Price will be made (i) upon the exercise of any warrants,  options
or convertible  securities issued and outstanding on the date of issuance hereof
in accordance  with the terms of such  securities as of such date; (ii) upon the
grant or  exercise  of any stock or options  which may  hereafter  be granted or
exercised  under any employee  benefit plan of the Company now existing or to be
implemented in the future, so long as the grant of such stock or options is made
by a  majority  of the  non-employee  members of the Board of  Directors  of the
Company or a majority of the members of a committee  of  non-employee  directors
established  for such  purpose;  (iii) upon the issuance of  Preferred  Stock in
accordance  with terms of the  Securities  Purchase  Agreement or Warrants  upon
conversion of such Preferred Stock; or (iv) upon the exercise of the Warrants or
conversion of the Preferred Stock.

          (c) Subdivision or Combination of Common Stock. If the Company, at any
time after the initial issuance of this Warrant, subdivides (by any stock split,
stock dividend, recapitalization, reorganization, reclassification or otherwise)
its shares of Common Stock into a greater number of shares, then, after the date
of  record  for  effecting  such  subdivision,  the  Exercise  Price  in  effect
immediately prior to such subdivision will be  proportionately  reduced.  If the
Company,  at any time after the initial  issuance of this Warrant,  combines (by
reverse  stock  split,  recapitalization,  reorganization,  reclassification  or
otherwise)  its shares of Common  Stock into a smaller  number of shares,  then,
after the date of record for effecting such  combination,  the Exercise Price in
effect immediately prior to such combination will be proportionately increased.

          (d)  Adjustment  in Number of  Shares.  Upon  each  adjustment  of the
Exercise  Price  pursuant  to the  provisions  of this  Section 4, the number of
shares of Common Stock  issuable upon exercise of this Warrant shall be adjusted
by multiplying a number equal to the Exercise Price


                                      -8-
<PAGE>

in effect immediately prior to such adjustment by the number of shares of Common
Stock  issuable  upon  exercise  of  this  Warrant  immediately  prior  to  such
adjustment and dividing the product so obtained by the adjusted Exercise Price.

          (e) Consolidation, Merger or Sale. In case of any consolidation of the
Company with, or merger of the Company into any other corporation, or in case of
any sale or conveyance of all or substantially  all of the assets of the Company
other than in connection  with a plan of complete  liquidation of the Company at
any time after the initial issuance of this Warrant, then as a condition of such
consolidation,  merger or sale or  conveyance,  adequate  provision will be made
whereby  the holder of this  Warrant  will have the right to acquire and receive
upon exercise of this Warrant in lieu of the shares of Common Stock  immediately
theretofore  acquirable upon the exercise of this Warrant, such shares of stock,
securities  or assets as may be issued or payable with respect to or in exchange
for the number of shares of Common Stock immediately  theretofore acquirable and
receivable upon exercise of this Warrant had such consolidation,  merger or sale
or  conveyance  not  taken  place.  In any such  case,  the  Company  will  make
appropriate  provision  to insure that the  provisions  of this Section 4 hereof
will  thereafter  be applicable as nearly as may be in relation to any shares of
stock or securities  thereafter  deliverable  upon the exercise of this Warrant.
The  Company  will not effect any  consolidation,  merger or sale or  conveyance
unless prior to the consummation  thereof,  the successor  corporation (if other
than the  Company)  assumes by written  instrument  the  obligations  under this
Section 4 and the  obligations  to deliver to the  holder of this  Warrant  such
shares of stock,  securities  or assets  as, in  accordance  with the  foregoing
provisions, the holder may be entitled to acquire.

          (f) Distribution of Assets.  In case the Company shall declare or make
any  distribution  of its assets (or rights to acquire its assets) to holders of
Common Stock as a partial liquidating  dividend,  by way of return of capital or
otherwise (including any dividend or distribution to the Company's  shareholders
of  cash or  shares  (or  rights  to  acquire  shares)  of  capital  stock  of a
subsidiary) (a  "Distribution"),  at any time after the initial issuance of this
Warrant, then the holder of this Warrant shall be entitled upon exercise of this
Warrant  for the  purchase of any or all of the shares of Common  Stock  subject
hereto,  to receive the amount of such assets (or rights)  which would have been
payable to the holder had such  holder  been the holder of such shares of Common
Stock on the record date for the determination of shareholders  entitled to such
Distribution.

          (g)  Notice of  Adjustment.  Upon the  occurrence  of any event  which
requires any adjustment of the Exercise Price,  then, and in each such case, the
Company shall give notice  thereof to the holder of this  Warrant,  which notice
shall state the Exercise Price  resulting from such  adjustment and the increase
or  decrease  in the number of  Warrant  Shares  purchasable  at such price upon
exercise,  setting forth in reasonable  detail the method of calculation and the
facts upon which such calculation is based.  Such calculation shall be certified
by the chief financial officer of the Company.


                                      -9-
<PAGE>

          (h)  Minimum  Adjustment  of  Exercise  Price.  No  adjustment  of the
Exercise  Price shall be made in an amount of less than 1% of the Exercise Price
in effect at the time such adjustment is otherwise  required to be made, but any
such lesser  adjustment  shall be carried  forward and shall be made at the time
and  together  with the next  subsequent  adjustment  which,  together  with any
adjustments  so  carried  forward,  shall  amount  to not  less  than 1% of such
Exercise Price.

          (i) No Fractional  Shares. No fractional shares of Common Stock are to
be issued upon the exercise of this  Warrant,  but the Company  shall pay a cash
adjustment in respect of any fractional  share which would otherwise be issuable
in an amount equal to the same fraction of the Market Price of a share of Common
Stock on the date of such exercise.

          (j) Other Notices. In case at any time:

               (i) the Company  shall declare any dividend upon the Common Stock
payable  in shares of stock of any class or make any other  distribution  (other
than  dividends  or  distributions  payable  in cash  out of  retained  earnings
consistent with the Company's past practices with respect to declaring dividends
and making distributions) to the holders of the Common Stock;

               (ii) the  Company  shall offer for  subscription  pro rata to the
holders of the Common Stock any additional shares of stock of any class or other
rights;

               (iii) there shall be any capital  reorganization  of the Company,
or  reclassification  of the Common  Stock,  or  consolidation  or merger of the
Company  with or into,  or sale of all or  substantially  all of its  assets to,
another corporation or entity; or

               (iv)  there  shall be a  voluntary  or  involuntary  dissolution,
liquidation or winding-up of the Company;

then,  in each such case,  the Company  shall give to the holder of this Warrant
(a) notice of the date on which the books of the Company shall close or a record
shall be taken for  determining  the holders of Common Stock entitled to receive
any such dividend,  distribution,  or subscription rights or for determining the
holders of Common Stock entitled to vote in respect of any such  reorganization,
reclassification,  consolidation,  merger,  sale,  dissolution,  liquidation  or
winding-up  and (b) in the  case of any such  reorganization,  reclassification,
consolidation,  merger, sale, dissolution,  liquidation or winding-up, notice of
the date (or,  if not then  known,  a  reasonable  approximation  thereof by the
Company) when the same shall take place. Such notice shall also specify the date
on which the holders of Common Stock shall be entitled to receive such dividend,
distribution, or subscription rights or to exchange their Common Stock for stock
or  other  securities  or  property   deliverable   upon  such   reorganization,
reclassification,  consolidation,  merger, sale,  dissolution,  liquidation,  or
winding-up,  as the case  may be.  Such  notice  shall be given at least 30 days
prior to the record date


                                      -10-
<PAGE>

or the  date on which  the  Company's  books  are  closed  in  respect  thereto;
provided,  however,  that the Company  shall not be  required  to  disclose  any
material  information  to the  holder  hereof  prior  to the  public  disclosure
thereof.  Failure to give any such notice or any defect therein shall not affect
the validity of the proceedings referred to in clauses (i), (ii), (iii) and (iv)
above.

          (k) Certain Events. If, at any time after the initial issuance of this
Warrant, any event occurs of the type contemplated by the adjustment  provisions
of this Section 4 but not expressly provided for by such provisions, the Company
will give  notice of such event as  provided  in Section  4(g)  hereof,  and the
Company's Board of Directors will make an appropriate adjustment in the Exercise
Price and the number of shares of Common Stock  acquirable upon exercise of this
Warrant  so that  the  rights  of the  holder  shall  be  neither  enhanced  nor
diminished by such event.

          (l) Certain Definitions.

               (i) "Common  Stock Deemed  Outstanding"  shall mean the number of
shares of Common Stock  actually  outstanding  (not  including  shares of Common
Stock  held  in the  treasury  of the  Company),  plus  (x) in the  case  of any
adjustment  required by Section 4(a) resulting from the issuance of any Options,
the maximum total number of shares of Common Stock issuable upon the exercise of
the Options for which the  adjustment  is required  (including  any Common Stock
issuable  upon  the  conversion  of  Convertible  Securities  issuable  upon the
exercise of such  Options),  and (y) in the case of any  adjustment  required by
Section 4(a)  resulting  from the issuance of any  Convertible  Securities,  the
maximum  total  number of shares of Common  Stock  issuable  upon the  exercise,
conversion or exchange of the Convertible Securities for which the adjustment is
required, as of the date of issuance of such Convertible Securities, if any.

               (ii) "Market Price," as of any date, (i) means the average of the
closing  bid  prices for the shares of Common  Stock as  reported  on the Nasdaq
National Market for the ten (10) consecutive trading days immediately  preceding
such date, or (ii) if the Nasdaq  National  Market is not the principal  trading
market for the shares of Common  Stock,  the  average of the last  reported  bid
prices on the  principal  trading  market for the Common  Stock  during the same
period,  or, if there is no bid price for such period,  the last reported  sales
price for such period,  or (iii) if market value cannot be calculated as of such
date on any of the foregoing  bases,  the Market Price shall be the average fair
market value as reasonably  determined by an investment banking firm selected by
the Corporation and reasonably  acceptable to the holder,  with the costs of the
appraisal to be borne by the Company. The manner of determining the Market Price
of the  Common  Stock set forth in the  foregoing  definition  shall  apply with
respect to any other security in respect of which a  determination  as to market
value must be made hereunder.

               (iii)  "Common  Stock," for purposes of this Section 4,  includes
the Common  Stock and any  additional  class of stock of the  Company  having no
preference as to


                                      -11-
<PAGE>

dividends or distributions on liquidation,  provided that the shares purchasable
pursuant to this Warrant  shall  include only Common  Stock,  par value $.01 per
share, in respect of which this Warrant is exercisable, or shares resulting from
any  subdivision  or  combination  of such Common  Stock,  or in the case of any
reorganization,   reclassification,   consolidation,  merger,  or  sale  of  the
character  referred to in Section 4(e) hereof,  the stock or other securities or
property provided for in such Section.

     5. Issue Tax.  The  issuance of  certificates  for Warrant  Shares upon the
exercise  of this  Warrant  shall be made  without  charge to the holder of this
Warrant or such shares for any issuance  tax or other costs in respect  thereof,
provided  that the  Company  shall not be  required  to pay any tax which may be
payable in respect of any transfer  involved in the issuance and delivery of any
certificate in a name other than the holder of this Warrant.

     6. No  Rights or  Liabilities  as a  Shareholder.  This  Warrant  shall not
entitle the holder  hereof to any voting rights or other rights as a shareholder
of the  Company.  No provision of this  Warrant,  in the absence of  affirmative
action by the holder hereof to purchase Warrant Shares,  and no mere enumeration
herein of the rights or privileges of the holder hereof,  shall give rise to any
liability  of such  holder for the  Exercise  Price or as a  shareholder  of the
Company,  whether  such  liability is asserted by the Company or by creditors of
the Company.

     7. Transfer, Exchange, Redemption and Replacement of Warrant.

          (a)  Restriction  on Transfer.  This Warrant and the rights granted to
the holder hereof are transferable,  in whole or in part, upon surrender of this
Warrant,  together  with a properly  executed  assignment  in the form  attached
hereto,  at the office or agency of the  Company  referred  to in  Section  7(e)
below,  provided,  however,  that any transfer or assignment shall be subject to
the conditions set forth in Section 7(f) and (g) hereof and to the provisions of
Sections 2(f) and 2(g) of the Securities Purchase Agreement;  provided, further,
however,  that the  Warrants  may not be  transferred  to more than  twenty five
transferees in the aggregate. Until due presentment for registration of transfer
on the books of the Company,  the Company may treat the registered holder hereof
as the owner and holder  hereof for all  purposes,  and the Company shall not be
affected by any notice to the contrary. Notwithstanding anything to the contrary
contained  herein,  the  registration  rights  described in Section 8 hereof are
assignable only in accordance  with the provisions of that certain  Registration
Rights  Agreement,  dated as of April 9, 1997,  by and among the Company and the
other signatory thereto (the "Registration Rights Agreement").

          (b) Warrant Exchangeable for Different Denominations.  This Warrant is
exchangeable,  upon the  surrender  hereof by the holder hereof at the office or
agency of the Company  referred to in Section  7(e) below,  for new  Warrants of
like tenor of different denominations representing in the aggregate the right to
purchase the number of shares of Common Stock which


                                      -12-
<PAGE>

may be purchased hereunder,  each of such new Warrants to represent the right to
purchase  such number of shares as shall be  designated  by the holder hereof at
the time of such surrender.

     (c)   Replacement   of  Warrant.   Upon  receipt  of  evidence   reasonably
satisfactory to the Company of the loss,  theft,  destruction,  or mutilation of
this  Warrant and, in the case of any such loss,  theft,  or  destruction,  upon
delivery of an indemnity agreement reasonably satisfactory in form and amount to
the  Company,  or,  in the  case of any  such  mutilation,  upon  surrender  and
cancellation  of this  Warrant,  the Company,  at its expense,  will execute and
deliver, in lieu thereof, a new Warrant of like tenor.

     (d) Cancellation;  Payment of Expenses.  Upon the surrender of this Warrant
in connection  with any transfer,  exchange,  or replacement as provided in this
Section 7, this Warrant shall be promptly  canceled by the Company.  The Company
shall  pay all  taxes  (other  than  securities  transfer  taxes)  and all other
expenses  (other  than  legal  expenses,  if  any,  incurred  by the  Holder  or
transferees) and charges payable in connection with the preparation,  execution,
and delivery of Warrants pursuant to this Section 7.

     (e)  Warrant  Register.  The  Company  shall  maintain,  at  its  principal
executive  offices  (or such  other  office or agency of the  Company  as it may
designate by notice to the holder hereof), a register for this Warrant, in which
the Company  shall  record the name and address of the person in whose name this
Warrant has been issued,  as well as the name and address of each transferee and
each prior owner of this Warrant.

     (f)  Exercise  or  Transfer  Without  Registration.  If, at the time of the
surrender of this Warrant in connection with any exercise, transfer, or exchange
of this  Warrant,  this  Warrant (or, in the case of any  exercise,  the Warrant
Shares issuable hereunder), shall not be registered under the Securities Act and
under applicable state securities or blue sky laws, the Company may require,  as
a condition of allowing  such  exercise,  transfer,  or  exchange,  (i) that the
holder or transferee of this Warrant, as the case may be, furnish to the Company
a written  opinion of counsel  (which  opinion  shall be in form,  substance and
scope  customary  for  opinions of counsel in  comparable  transactions)  to the
effect  that  such  exercise,   transfer,   or  exchange  may  be  made  without
registration  under the Securities Act and under  applicable state securities or
blue sky laws,  (ii) that the holder or  transferee  execute  and deliver to the
Company an investment letter in form and substance acceptable to the Company and
(iii) that the transferee be an "accredited  investor" as defined in Rule 501(a)
promulgated  under the Securities  Act;  provided that no such opinion,  letter,
status as an  "accredited  investor"  shall be  required  in  connection  with a
transfer pursuant to Rule 144 under the Securities Act.

     (g)  Additional  Restrictions  on  Exercise  or  Transfer.  Notwithstanding
anything  contained herein to the contrary,  in no event shall the holder hereof
exercise Warrants to the extent


                                      -13-
<PAGE>

that (a) the number of shares of Common Stock  beneficially owned by such holder
and its  affiliates  (other  than  shares  of Common  Stock  which may be deemed
beneficially  owned  through the  ownership  of the  unexercised  portion of the
Warrants  or the  unexercised  or  unconverted  portion of any other  securities
(including, without limitation, the Preferred Stock) of the Company subject to a
limitation  on  conversion  or exercise  analogous to the  limitation  contained
herein) and (b) the number of shares of Common Stock  issuable  upon exercise of
the  Warrants  (or  portion  thereof)  with  respect to which the  determination
described  herein is being made,  would result in  beneficial  ownership by such
holder and its affiliates of more than 4.9% of the outstanding  shares of Common
Stock. For purposes of the immediately preceding sentence,  beneficial ownership
shall be determined in accordance with Section 13(d) of the Securities  Exchange
Act of 1934, as amended,  and Regulation 13D-G  thereunder,  except as otherwise
provided in clause (a) hereof.  The first holder of this Warrant,  by taking and
holding the same,  represents to the Company that such holder is acquiring  this
Warrant for  investment  only and not with a view to the  distribution  thereof,
except pursuant to sales that are exempt from the  registration  requirements of
the Securities Act and/or sales registered under the Securities Act.

     8.  Registration  Rights.  The initial  holder of this Warrant (and certain
assignees  thereof) is entitled  to the benefit of such  registration  rights in
respect  of the  Warrant  Shares  as are set  forth in the  Registration  Rights
Agreement.

     9. Notices.  Any notices  required or permitted to be given under the terms
of this Warrant  shall be sent by certified or registered  mail (return  receipt
requested) or delivered  personally or by courier or by confirmed telecopy,  and
shall be effective five days after being placed in the mail, if mailed,  or upon
receipt  or  refusal  of  receipt,  if  delivered  personally  or by  courier or
confirmed  telecopy,  in each case addressed to a party.  The addresses for such
communications shall be:

                        If to the Company:

                        FastComm Communications Corporation
                        45472 Holiday Drive
                        Sterling, VA 20166
                        Telecopy: (703) 318-4315
                        Attn: Chief Financial Officer


                                      -14-
<PAGE>

                          with copy to:

                          Amon & Sabatini, L.L.P.
                          437 Madison Avenue
                          New York, NY 10022
                          Telecopy: (212) 980-3075
                          Attn: Thomas Amon, Esquire

and if to the  holder,  at such  address as such holder  shall have  provided in
writing to the Company, or at such other address as each such party furnishes by
notice given in accordance with this Section 9.

     10.  Governing  Law;  Jurisdiction.  This Warrant  shall be governed by and
construed in  accordance  with the laws of the State of New York  applicable  to
contracts  made and to be  performed  in the  State  of New  York.  The  Company
irrevocably  consents to the  jurisdiction  of the United States  federal courts
located  in New York,  New York in any suit or  proceeding  based on or  arising
under this  Warrant  and  irrevocably  agrees that all claims in respect of such
suit or proceeding  may be determined  in such courts.  The Company  irrevocably
waives the defense of an  inconvenient  forum to the maintenance of such suit or
proceeding.  The Company  agrees that service of process upon the Company mailed
by first  class  mail  shall be deemed in every  respect  effective  service  of
process upon the Company in any such suit or  proceeding.  Nothing  herein shall
affect the holder's right to serve process in any other manner permitted by law.
The  Company  agrees  that a final  non-appealable  judgment in any such suit or
proceeding  shall be conclusive  and may be enforced in other  jurisdictions  by
suit on such judgment or in any other lawful manner.

     11. Miscellaneous.

          (a)  Amendments.  This  Warrant and any  provision  hereof may only be
amended by an instrument in writing signed by the Company and the holder hereof.

          (b)  Descriptive  Headings.  The  descriptive  headings of the several
Sections of this Warrant are inserted for purposes of reference  only, and shall
not affect the meaning or construction of any of the provisions hereof.

          (c)  Cashless  Exercise.  Notwithstanding  anything  to  the  contrary
contained in this Warrant,  if the resale of the Warrant Shares by the holder is
not then registered  pursuant to an effective  registration  statement under the
Securities  Act, this Warrant may be exercised at any time after the first (1st)
anniversary  of the  date  hereof  until  the  end of the  Exercise  Period,  by
presentation  and  surrender  of this  Warrant to the  Company at its  principal
executive  offices with a written  notice of the holder's  intention to effect a
cashless exercise, including a calculation of the number of shares


                                      -15-
<PAGE>

of Common  Stock to be issued upon such  exercise in  accordance  with the terms
hereof (a "Cashless Exercise").  In the event of a Cashless Exercise, in lieu of
paying the Exercise Price in cash,  the holder shall  surrender this Warrant for
that number of shares of Common Stock  determined by  multiplying  the number of
Warrant  Shares to which it would  otherwise  be  entitled  by a  fraction,  the
numerator of which shall be the difference between the then current Market Price
per share of the Common Stock and the Exercise  Price,  and the  denominator  of
which shall be the then current Market Price per share of Common Stock.

          (d) Force Majeure.  Neither the Company nor the holder hereof shall be
responsible  for any delay or failure to perform any part of this Warrant to the
extent that such delay or failure is solely caused by fire,  flood,  earthquake,
explosion,  war,  labor strike,  riot,  act of  governmental,  civil or military
authority  which  imposes  a  moratorium  on the  performance  of  the  specific
obligation  in  question  or other  comparable  extraordinary  event  beyond the
Company's or holder's control.  Notice with full details of any such event shall
be given to the other party as promptly as practicable after its occurrence. The
affected  party shall use its best efforts to minimize the effects of or end any
such event so as to facilitate the resumption of full performance hereunder.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]


                                      -16-
<PAGE>

     IN WITNESS WHEREOF, the Company has caused this Warrant to be signed by its
duly authorized officer.

                                        FASTCOMM COMMUNICATIONS
                                        CORPORATION


                                        By: ________________________
                                            Name:___________________
                                            Title:____________________


                                      -17-
<PAGE>

                           FORM OF EXERCISE AGREEMENT

         (To be Executed by the Holder in order to Exercise the Warrant)


     The  undersigned  hereby  irrevocably   exercises  the  right  to  purchase
_____________  of  the  shares  of  common  stock  of  FastComm   Communications
Corporation,  a Virginia corporation (the "Company"),  evidenced by the attached
Warrant,  and herewith  makes payment of the Exercise Price with respect to such
shares in full,  all in accordance  with the  conditions  and provisions of said
Warrant.

     i. The undersigned agrees not to offer, sell, transfer or otherwise dispose
of  any  Common  Stock  obtained  on  exercise  of  the  Warrant,  except  under
circumstances that will not result in a violation of the Securities Act of 1933,
as amended,  or any state  securities laws, and agrees that the following legend
may be affixed to the stock  certificate for the Common Stock hereby  subscribed
for if  resale  of such  Common  Stock is not  registered  or if Rule  144(k) is
unavailable:

          THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THE
          SECURITIES  HAVE BEEN ACQUIRED FOR INVESTMENT AND MAY NOT BE
          SOLD, TRANSFERRED OR ASSIGNED IN THE ABSENCE OF AN EFFECTIVE
          REGISTRATION STATEMENT FOR THE SECURITIES UNDER SAID ACT, OR
          AN  OPINION  OF  COUNSEL,  IN  FORM,   SUBSTANCE  AND  SCOPE
          CUSTOMARY    FOR   OPINIONS   OF   COUNSEL   IN   COMPARABLE
          TRANSACTIONS,  THAT  REGISTRATION IS NOT REQUIRED UNDER SAID
          ACT OR UNLESS SOLD PURSUANT TO RULE 144(K) UNDER SAID ACT.


     ii. The  undersigned  requests that stock  certificates  for such shares be
issued,  and a Warrant  representing  any unexercised  portion hereof be issued,
pursuant  to the  Warrant  in  the  name  of the  Holder  and  delivered  to the
undersigned at the address set forth below:

Dated:_________________                    _____________________________________
                                           Signature of Holder
                                          
                                           _____________________________________
                                           Name of Holder (Print)
                                          
                                           Address:
                                           _____________________________________
                                           _____________________________________
                                           _____________________________________
                                          
                                          
<PAGE>

                               FORM OF ASSIGNMENT

     FOR VALUE RECEIVED,  the undersigned hereby sells,  assigns,  and transfers
all the rights of the  undersigned  under the within Warrant in accordance  with
the  conditions  and  provisions of said Warrant,  with respect to the number of
shares of Common Stock covered thereby set forth hereinbelow, to:

Name of Assignee                         Address                  No of Shares
- ----------------                         -------                  ------------






,   and   hereby   irrevocably    constitutes   and   appoints    ______________
________________________  as agent and attorney-in-fact to transfer said Warrant
on the books of the within-named corporation, with full power of substitution in
the premises.


Dated: _____________________, ____,


In the presence of

__________________

                             Name: ____________________________


                                 Signature: _______________________
                                 Title of Signing Officer or Agent (if any):
                                                    
                                 Address:  ________________________
                                           ________________________
                                           ________________________

                                 Note:   The above signature should
                                         correspond exactly with the name on
                                         the face of the within Warrant.




                                                                       EXHIBIT F
                                                                   to Securities
                                                                        Purchase
                                                                       Agreement

                          CERTIFICATE OF DESIGNATIONS,
                             PREFERENCES AND RIGHTS

                                       of

                      SERIES A CONVERTIBLE PREFERRED STOCK

                                       of

                       FASTCOMM COMMUNICATIONS CORPORATION

                       Pursuant to Section 13.1-639 of the
                         Virginia Stock Corporation Act


     FastComm Communications  Corporation,  a corporation organized and existing
under the laws of the  Commonwealth  of  Virginia  (the  "Corporation"),  hereby
certifies that the following  resolutions were adopted by the Board of Directors
of the  Corporation  pursuant to authority of the Board of Directors as required
by Section 13.1-639 of the Virginia Stock Corporation Act.

     RESOLVED, that pursuant to the authority granted to and vested in the Board
of Directors of this  Corporation  (the "Board of  Directors" or the "Board") in
accordance with the provisions of its Certificate of Incorporation, the Board of
Directors hereby authorizes a series of the Corporation's  previously authorized
Preferred  Stock, par value $.01 per share (the "Preferred  Stock"),  and hereby
states the  designation  and number of shares,  and fixes the  relative  rights,
preferences, privileges, powers and restrictions thereof as follows:


<PAGE>

     Series A Convertible Preferred Stock:

                            I. DESIGNATION AND AMOUNT

     The designation of this series, which consists of 5,000 shares of Preferred
Stock,  is the Series A  Convertible  Preferred  Stock (the  "Series A Preferred
Stock") and the face amount shall be One Thousand U.S.  Dollars  ($1,000.00) per
share (the "Face Amount").

                                II. NO DIVIDENDS

     The Series A Preferred Stock will bear no dividends, and the holders of the
Series A  Preferred  Stock shall not be  entitled  to receive  dividends  on the
Series A Preferred Stock.

                            III. CERTAIN DEFINITIONS

     For purposes of this Certificate of Designation,  the following terms shall
have the following meanings:

     A. "Closing Bid Price" means,  for any security as of any date, the closing
bid price of such  security  on the  principal  securities  exchange  or trading
market  where  such  security  is  listed or traded  as  reported  by  Bloomberg
Financial  Markets or a  comparable  reporting  service of  national  reputation
selected by the Corporation  and reasonably  acceptable to holders of a majority
of the then  outstanding  shares  of  Series  A  Preferred  Stock  if  Bloomberg
Financial  Markets is not then  reporting  closing  bid prices of such  security
(collectively,  "Bloomberg"),  or if the  foregoing  does  not  apply,  the last
reported  sale  price of such  security  in the  over-the-counter  market on the
electronic bulletin board for such security as reported by Bloomberg,  or, if no
sale price is reported for such  security by  Bloomberg,  the average of the bid
prices of any market  makers for such  security as reported in the "pink sheets"
by the  National  Quotation  Bureau,  Inc. If the  Closing  Bid Price  cannot be
calculated  for such  security on such date on any of the foregoing  bases,  the
Closing Bid Price of such  security on such date shall be the fair market  value
as  reasonably  determined  by  an  investment  banking  firm  selected  by  the
Corporation  and  reasonably  acceptable  to holders  of a majority  of the then
outstanding shares of Series A Preferred Stock, with the costs of such appraisal
to be borne by the Corporation.

     B. "Conversion Date" means, for any Optional Conversion, the date specified
in the  notice  of  conversion  in the form  attached  hereto  (the  "Notice  of
Conversion"),  so long as the copy of the  Notice  of  Conversion  is faxed  (or
delivered  by  other  means  resulting  in  notice)  to the  Corporation  before
Midnight,  New York City time, on the Conversion Date indicated in the Notice of
Conversion.  If the Notice of Conversion is not so faxed or otherwise  delivered
before such time, then the Conversion Date shall be the date the holder faxes or
otherwise delivers the Notice of


                                      -2-
<PAGE>

Conversion to the Corporation.  The Conversion Date for the Required  Conversion
at Maturity shall be the Maturity Date (as such terms are defined in Paragraph D
of Article IV).

     C. "Conversion  Percentage"  shall have the following  meaning and shall be
subject to adjustment as provided herein:

If the Conversion Date is:                   Then the Conversion Percentage is:
- --------------------------                   ----------------------------------

Prior to October 6, 1997                                100%

On or after October 6, 1997                              90%

     D.  "Conversion  Price"  means,  (a) with  respect to any  Conversion  Date
occurring prior to October 6, 1997, the Variable  Conversion  Price and (b) with
respect to any Conversion  Date occurring on or after October 6, 1997, the lower
of the Fixed Conversion Price and the Variable  Conversion Price, each in effect
as of such date and subject to adjustment as provided herein.

     E. "Fixed Conversion Price" means $7.54, and shall be subject to adjustment
as provided herein.

     F. "N" means the number of days from, but excluding,  the Closing Date (the
"Closing  Date") of the First  Closing  under that certain  Securities  Purchase
Agreement (the "Securities Purchase Agreement") dated April 9, 1997 by and among
the  Corporation  and the Purchasers of the  Corporation's  5% Convertible  Term
Debentures due 2001 (the "Debentures") through and including the Conversion Date
for such share of Series A Preferred Stock.

     G. "Premium" means an amount equal to (.05)x(N/365)x(1,000).

     H. "Variable Conversion Price" means, as of any date of determination,  the
amount obtained by multiplying  the Conversion  Percentage then in effect by the
average  of the  Closing  Bid  Prices  for the  Common  Stock  for the ten  (10)
consecutive  trading days ending on the trading day  immediately  preceding such
date of  determination  (subject to equitable  adjustment  for any stock splits,
stock  dividends,  reclassifications  or  similar  events  during  such ten (10)
trading day period), and shall be subject to adjustment as provided herein.


                                      -3-
<PAGE>

     I. "Warrant Coverage Percentage" shall have the following meaning and shall
be subject to adjustment as provided herein:

If the Conversion Date is:             Then the Warrant Coverage Percentage is:
- --------------------------             ----------------------------------------

Prior to October 6, 1997                                 0%

On or after October 6, 1997                             20%
and prior to April 4, 1998

On or after April 4,1998                                40%

                                 IV. CONVERSION

     A.  Conversion at the Option of the Holder.  Subject to the  limitations on
conversions  contained  in Paragraph C of this Article IV, each holder of shares
of Series A Preferred Stock may, at any time and from time to time,  convert (an
"Optional Conversion") each of its shares of Series A Preferred Stock into:

          (i) a number of fully paid and  nonassessable  shares of Common  Stock
determined in accordance with the following formula:

                               1,000 + the Premium
                           --------------------------
                             Conversion Price Plus

          (ii)  warrants,  in the form  attached as Exhibit B to the  Securities
Purchase Agreement,  to purchase a number of shares of Common Stock equal to the
Warrant Coverage  Percentage  multiplied by the number of shares of Common Stock
issuable pursuant to clause (i) above (the "Warrants").

     B. Mechanics of Conversion.  In order to effect an Optional  Conversion,  a
holder shall: (x) fax (or otherwise deliver) a copy of the fully executed Notice
of Conversion to the  Corporation  and (y) surrender or cause to be  surrendered
the  original  certificates  representing  the Series A  Preferred  Stock  being
converted (the "Preferred Stock Certificates"), duly endorsed, along with a copy
of  the  Notice  of  Conversion  as  soon  as  practicable   thereafter  to  the
Corporation.  Upon receipt by the Corporation of a facsimile copy of a Notice of
Conversion from a holder, the Corporation shall immediately send, via facsimile,
a  confirmation  to such holder  stating that the Notice of Conversion  has been
received,  the date upon which the  Corporation  expects  to deliver  the Common
Stock and Warrants  issuable  upon such  conversion  and the name and  telephone
number of a contact  person at the  Corporation  regarding the  conversion.  The
Corporation shall not be obligated to issue


                                      -4-
<PAGE>

shares of Common Stock or Warrants upon a conversion unless either the Preferred
Stock  Certificates  are delivered to the  Corporation as provided above, or the
holder notifies the Corporation that such certificates have been lost, stolen or
destroyed (and the requirements of Article XIV.B are complied with).

          (i) Delivery of Common Stock Upon  Conversion.  Upon the  surrender of
Preferred  Stock  Certificates  from  a  holder  of  Series  A  Preferred  Stock
accompanied by a Notice of Conversion,  the Corporation shall, no later than the
later of (a) the second  business day following the Conversion  Date and (b) the
date  of  such  surrender  (or,  in  the  case  of  lost,  stolen  or  destroyed
certificates,  after  provision  of  indemnity  pursuant to Article  XIV.B) (the
"Delivery Period"), issue and deliver to the holder (x) that number of shares of
Common Stock and Warrants  issuable  upon  conversion of such shares of Series A
Preferred Stock being converted and (y) a certificate representing the number of
shares of Series A Preferred Stock not being converted, if any.

          (ii) Taxes.  The  Corporation  shall pay any and all taxes (other than
transfer  taxes)  which may be imposed  upon it with respect to the issuance and
delivery  of the  shares of Common  Stock  upon the  conversion  of the Series A
Preferred Stock.

          (iii) No Fractional  Shares.  If any  conversion of Series A Preferred
Stock would result in the issuance of either a fractional  share of Common Stock
or a Warrant to purchase a fractional  share of Common  Stock,  such  fractional
share shall be  disregarded  and the number of shares of Common  Stock  issuable
upon  conversion of the Series A Preferred Stock or upon exercise of the Warrant
shall be the nearest whole number of shares.

          (iv) Conversion Disputes. In the case of any dispute with respect to a
conversion, the Corporation shall promptly issue such number of shares of Common
Stock and  Warrants as are not  disputed in  accordance  with  subparagraph  (i)
above.  If such dispute  involves the calculation of the Conversion  Price,  the
Corporation shall submit the disputed calculations to its outside accountant via
facsimile  within two (2) business days of receipt of the Notice of  Conversion.
The accountant  shall audit the  calculations and notify the Corporation and the
holder  of the  results  no later  than two (2)  business  days from the date it
receives the disputed calculations. The accountant's calculation shall be deemed
conclusive,  absent  manifest  error.  The  Corporation  shall  then  issue  the
appropriate  number of shares of Common  Stock and Warrants in  accordance  with
subparagraph (i) above.

     C.  Limitations  on  Conversions.  The  conversion  of  shares  of Series A
Preferred  Stock shall be subject to the  following  limitations  (each of which
limitations shall be applied independently):

          (i)  Volume  Limitations.  During  the  first 360 days  following  the
Closing  Date,  a holder of Series A  Preferred  Stock may not during any ninety
(90)  calendar day period ending on a Conversion  Date,  convert at the Variable
Conversion Price more than  seventy-five  percent (75%) of the Total Face Amount
of all shares of Series A  Preferred  Stock  acquired  by such  holder.  For the
avoidance of doubt,  the  conversion  of any shares of Series A Preferred  Stock
into Common Stock


                                      -5-
<PAGE>

and  Warrants  subject to an Optional  Redemption  Notice (as defined in Article
VIII.D)  shall not be counted as a conversion at the Variable  Conversion  Price
for purposes of this subparagraph (i).

          (ii)  Cap  Amount.  Unless  permitted  by  the  applicable  rules  and
regulations  of the  principal  securities  market on which the Common  Stock is
listed or traded,  in no event shall the total  number of shares of Common Stock
issued upon conversion of the Series A Preferred Stock exceed the maximum number
of shares of Common  Stock that the  Corporation  can so issue  pursuant to Rule
4460(i) of the Nasdaq  National  Market  ("Nasdaq") (or any successor rule) (the
"Cap Amount") which, as of the date of issuance of the Series A Preferred Stock,
shall be 2,016,261  shares.  The Cap Amount  shall be allocated  pro-rata to the
holders of Series A Preferred  Stock as provided in Article XIV.D.  In the event
the Corporation is prohibited from issuing shares of Common Stock as a result of
the  operation  of this  subparagraph  (i),  the  Corporation  shall comply with
Article VII.

          (iii) No Five  Percent  Holders.  Except in a Required  Conversion  at
Maturity,  in no event shall a holder of shares of Series A  Preferred  Stock be
entitled to receive  shares of Common Stock upon a conversion to the extent that
the sum of (x) the number of shares of Common  Stock  beneficially  owned by the
holder and its affiliates  (exclusive of shares  issuable upon conversion of the
unconverted portion of the shares of Series A Preferred Stock or the unexercised
or unconverted  portion of any other  securities of the Corporation  (including,
without  limitation,  the  Warrants)  subject to a limitation  on  conversion or
exercise  analogous to the limitations  contained  herein) and (y) the number of
shares of Common Stock  issuable  upon the  conversion of the shares of Series A
Preferred Stock with respect to which the  determination of this subparagraph is
being  made,  would  result  in  beneficial  ownership  by the  holder  and  its
affiliates  of more than 4.9% of the  outstanding  shares of Common  Stock.  For
purposes of this  subparagraph,  beneficial  ownership  shall be  determined  in
accordance  with  Section  13(d) of the  Securities  Exchange  Act of  1934,  as
amended,  and  Regulation  13 D-G  thereunder,  except as otherwise  provided in
clause (x) above. The restriction contained in this subparagraph (iii) shall not
be  altered,  amended,  deleted or changed in any manner  whatsoever  unless the
holders of a majority of the Common  Stock and each holder of Series A Preferred
Stock shall approve such alteration, amendment, deletion or change.

     D. Required Conversion at Maturity. Subject to the limitations set forth in
Paragraph  C(ii) of this  Article IV and  provided  all  shares of Common  Stock
issuable upon conversion of all  outstanding  shares of Series A Preferred Stock
and all Warrants  issuable upon  conversion  thereof are then (i) authorized and
reserved for issuance,  (ii)  registered  under the  Securities  Act of 1933, as
amended  (the  "Securities  Act") for resale by the  holders  of such  shares of
Series A Preferred  Stock and (iii)  eligible to be traded on either the Nasdaq,
the New York Stock Exchange or the American Stock Exchange, each share of Series
A Preferred Stock issued and outstanding on April 9, 2001 (the "Maturity  Date")
(and any accrued and unpaid Conversion Default Payments), automatically shall be
converted  into shares of Common Stock and  Warrants on such date in  accordance
with the  conversion  formulas  set forth in Paragraph A of this Article IV (the
"Required Conversion at Maturity"). If a Required Conversion at Maturity occurs,
the  Corporation  and the holders of Series A Preferred  Stock shall  follow the
applicable  conversion  procedures  set forth in Paragraph B of this Article IV;
provided, however, that the holders of Series


                                      -6-
<PAGE>

A  Preferred  Stock are not  required to deliver a Notice of  Conversion  to the
Corporation or its transfer agent.

                    V. RESERVATION OF SHARES OF COMMON STOCK

     A.  Reserved  Amount.  Upon the initial  issuance of the shares of Series A
Preferred  Stock,  all of the  authorized  but  unissued  shares of Common Stock
reserved for issuance upon  conversion of the  Debentures  shall be reserved for
issuance  upon  conversion  of the Series A Preferred  Stock and exercise of the
Warrants and thereafter  the number of authorized but unissued  shares of Common
Stock so reserved (the  "Reserved  Amount")  shall not be decreased and shall at
all times be sufficient to provide for the  conversion of the Series A Preferred
Stock  outstanding  at the then  current  Conversion  Price and  exercise of the
Warrants then issuable upon  conversion.  The Reserved Amount shall be allocated
to the holders of Series A Preferred Stock as provided in Article XIV.D.

     B. Increases to Reserved  Amount.  If the Reserved Amount for any three (3)
consecutive  trading  days (the last of such  three (3)  trading  days being the
"Authorization Trigger Date") shall be less than 135% of the number of shares of
Common  Stock  issuable  upon  conversion  of the Series A  Preferred  Stock and
exercise of Warrants  issuable upon such  conversion  on such trading days,  the
Corporation shall immediately  notify the holders of Series A Preferred Stock of
such  occurrence  and shall take  immediate  action  (including,  if  necessary,
seeking  shareholder  approval to authorize the issuance of additional shares of
Common Stock) to increase the Reserved Amount to 200% of the number of shares of
Common Stock then issuable upon conversion of the outstanding Series A Preferred
Stock and exercise of Warrants  issuable upon such conversion.  In the event the
Corporation  fails to so increase the Reserved  Amount  within  ninety (90) days
after an  Authorization  Trigger Date,  each holder of Series A Preferred  Stock
shall  thereafter  have the option,  exercisable in whole or in part at any time
and from time to time by delivery of a Redemption  Notice (as defined in Article
VIII.C) to the Corporation,  to require the Corporation to purchase for cash, at
an amount  per share  equal to the  Redemption  Amount  (as  defined  in Article
VIII.B),  a portion of the holder's  Series A Preferred  Stock such that,  after
giving effect to such purchase,  the holder's  allocated portion of the Reserved
Amount  exceeds 135% of the total  number of shares of Common Stock  issuable to
such holder upon conversion of its Series A Preferred Stock (and exercise of the
Warrants issuable upon such conversion).  If the Corporation fails to redeem any
of such shares  within five (5) business  days after its receipt of a Redemption
Notice,  then such holder shall be entitled to the remedies  provided in Article
VIII.C.

                       VI. FAILURE TO SATISFY CONVERSIONS

     A. Conversion Default Payments.  If, at any time, (x) a holder of shares of
Series A Preferred  Stock  submits a Notice of  Conversion  and the  Corporation
fails for any reason  (other  than  because  such  issuance  would  exceed  such
holder's allocated portion of the Reserved Amount or Cap


                                      -7-
<PAGE>

Amount,  for which  failures  the holders  shall have the  remedies set forth in
Articles V and VII) to deliver, on or prior to the fourth business day following
the  expiration  of the  Delivery  Period for such  conversion,  such  number of
Warrants  or freely  tradeable  shares of Common  Stock to which such  holder is
entitled upon such  conversion,  or (y) the  Corporation  provides notice to any
holder of Series A  Preferred  Stock at any time of its  intention  not to issue
Warrants or freely  tradeable shares of Common Stock upon exercise by any holder
of its  conversion  rights in accordance  with the terms of this  Certificate of
Designation  (other than  because  such  issuance  would  exceed  such  holder's
allocated  portion of the  Reserved  Amount or Cap Amount)  (each of (x) and (y)
being a "Conversion  Default"),  then the Corporation  shall pay to the affected
holder,  in the case of a Conversion  Default described in clause (x) above, and
to all  holders,  in the case of a  Conversion  Default  described in clause (y)
above, payments for the first ten (10) business days following the expiration of
the Delivery  Period,  in the case of a Conversion  Default  described in clause
(x), and for the first ten (10) business days of a Conversion  Default described
in clause  (y),  an amount  equal to $500 per day.  In the event any  Conversion
Default  continues  beyond such ten (10)  business day period,  the  Corporation
shall pay to the holder an additional amount equal to:

                     (.24) x (D/365) x (the Default Amount)
where:

     "D" means the number of days after the  expiration of the ten (10) business
day period described above through and including the Default Cure Date;

     "Default  Amount" means (i) the total Face Amount of all shares of Series A
Preferred  Stock held by such holder plus (ii) the total Premium as of the first
day of the Conversion Default on all shares of Series A Preferred Stock included
in clause (i) of this definition; and

     "Default  Cure  Date"  means  (i)  with  respect  to a  Conversion  Default
described in clause (x) of its definition,  the date the Corporation effects the
conversion  of the full  number of shares of Series A  Preferred  Stock and (ii)
with respect to a Conversion  Default described in clause (y) of its definition,
the date the  Corporation  begins  to issue  freely  tradeable  Common  Stock in
satisfaction  of all  conversions of Series A Preferred Stock in accordance with
Article IV.A.

     The payments to which a holder shall be entitled pursuant to this Paragraph
A are referred to herein as "Conversion Default Payments." A holder may elect to
receive  accrued  Conversion  Default  Payments in cash or to convert all or any
portion of such accrued  Conversion  Default Payments,  at any time, into Common
Stock and Warrants at the lowest  Conversion  Price in effect  during the period
beginning on the date of the Conversion  Default through the Conversion Date for
such conversion.  In the event a holder elects to receive any Conversion Default
Payments in cash, it shall so notify the  Corporation  in writing.  Such payment
shall be made in  accordance  with and be subject to the  provisions  of Article
XIV.F.  In the  event a holder  elects  to  convert  all or any  portion  of the
Conversion Default Payments, the holder shall indicate on a Notice of Conversion


                                      -8-
<PAGE>

such portion of the Conversion  Default  Payments which such holder elects to so
convert and such  conversion  shall otherwise be effected in accordance with the
provisions of Article IV.

     B.   Adjustment  to  Conversion   Price.  If  a  holder  has  not  received
certificates  for all  shares of  Common  Stock or  Warrants  prior to the tenth
(10th)  business day after the expiration of the Delivery Period with respect to
a conversion of Series A Preferred Stock for any reason (other than because such
issuance would exceed such holder's  allocated portion of the Reserved Amount or
Cap Amount,  for which failures the holders shall have the remedies set forth in
Articles V and VII), then the Fixed Conversion Price in respect of any shares of
Series A Preferred  Stock held by such holder shall  thereafter be the lesser of
(i) the Fixed Conversion Price on the Conversion Date specified in the Notice of
Conversion  which  resulted  in the  Conversion  Default  and  (ii)  the  lowest
Conversion Price in effect during the period  beginning on, and including,  such
Conversion  Date through and  including  the day such shares of Common Stock are
delivered to the holder.  If there shall occur a Conversion  Default of the type
described in clause (y) of Article VI.A.,  then the Fixed  Conversion Price with
respect to any conversion  thereafter  shall be the lowest  Conversion  Price in
effect at any time during the period  beginning on, and  including,  the date of
the occurrence of such Conversion Default through and including the Default Cure
Date.  The Fixed  Conversion  Price  shall  thereafter  be  subject  to  further
adjustment for any events described in Article XI.

     C. Buy-In Cure.  Unless the Corporation has notified the applicable  holder
in  writing  that the  Corporation  is unable to honor  conversions,  if (i) the
Corporation fails for any reason to deliver during the Delivery Period shares of
Common Stock to a holder upon a conversion of shares of Series A Preferred Stock
and (ii) after the applicable  Delivery Period with respect to such  conversion,
such holder  purchases (in an open market  transaction  or otherwise)  shares of
Common Stock to make  delivery in  satisfaction  of a sale by such holder of the
shares of Common  Stock  (the  "Sold  Shares")  which  such  holder  anticipated
receiving  upon such  conversion (a "Buy-In"),  the  Corporation  shall pay such
holder (in addition to any other remedies available to the holder) the amount by
which (x) such holder's total purchase price (including  brokerage  commissions,
if any) for the shares of Common Stock so purchased exceeds (y) the net proceeds
received by such  holder from the sale of the Sold  Shares.  For  example,  if a
holder purchases shares of Common Stock having a total purchase price of $11,000
to cover a Buy-In with  respect to shares of Common  Stock it sold for  $10,000,
the  Corporation  will be  required  to pay the holder  $1,000.  A holder  shall
provide the Corporation written  notification  indicating any amounts payable to
such  holder  pursuant  to this  Paragraph  C. The  Corporation  shall  make any
payments required pursuant to this Paragraph C in accordance with and subject to
the provisions of Article XIV.F.

     D. Redemption  Right. If the Corporation  fails, and such failure continues
uncured  for five (5)  business  days after the  Corporation  has been  notified
thereof in writing  by the  holder,  for any reason  (other  than  because  such
issuance would exceed such holder's  allocated portion of the Reserved Amount or
Cap Amount,  for which failures the holders shall have the remedies set forth in
Articles V and VII) to issue shares of Common Stock or Warrants  within ten (10)
business days after the  expiration  of the Delivery  Period with respect to any
conversion  of Series A Preferred  Stock,  then the holder may elect at any time
and from time to time prior to the Default Cure Date


                                      -9-
<PAGE>

for such Conversion  Default,  by delivery of a Redemption Notice (as defined in
Article VIII.C) to the Corporation,  to have all or any portion of such holder's
outstanding  shares of Series A Preferred Stock purchased by the Corporation for
cash,  at an amount per share  equal to the  Redemption  Amount  (as  defined in
Article  VIII.B).  If the Corporation  fails to redeem any of such shares within
five (5)  business  days after its  receipt of a  Redemption  Notice,  then such
holder shall be entitled to the remedies provided in Article VIII.C.

        VII. INABILITY TO CONVERT SHARES OF SERIES A PREFERRED STOCK DUE
                                  TO CAP AMOUNT

     A.  Obligation  to Cure.  If at any time the then  unissued  portion of any
holder's  Cap Amount is less than 135% of the  number of shares of Common  Stock
then  issuable upon  conversion  of such  holder's  shares of Series A Preferred
Stock (a "Trading  Market Trigger  Event"),  the Corporation  shall  immediately
notify the holders of Series A Preferred Stock of such occurrence and shall take
immediate  action  (including,  if  necessary,   seeking  the  approval  of  its
shareholders  to  authorize  the issuance of the full number of shares of Common
Stock which would be issuable upon the  conversion  of Series A Preferred  Stock
but for the Cap Amount) to eliminate any  prohibitions  under  applicable law or
the rules or regulations of any stock exchange,  interdealer quotation system or
other self-regulatory organization with jurisdiction over the Corporation or any
of its securities on the  Corporation's  ability to issue shares of Common Stock
in excess of the Cap Amount. In the event the Corporation fails to eliminate all
such  prohibitions  within  ninety  (90) days after the Trading  Market  Trigger
Event, each holder of Series A Preferred Stock shall thereafter have the option,
exercisable in whole or in part at any time and from time to time by delivery of
a  Redemption  Notice  (as  defined in Article  VIII.C) to the  Corporation,  to
require the  Corporation  to purchase for cash,  at an amount per share equal to
the Redemption Amount (as defined in Article VIII.B),  a portion of the holder's
Series A Preferred  Stock such that,  after giving effect to such purchase,  the
holder's allocated portion of the Cap Amount exceeds 135% of the total number of
shares of Common Stock  issuable to such holder upon  conversion of its Series A
Preferred Stock on the date of such Redemption  Notice. If the Corporation fails
to redeem any of such shares  within five (5) business days after its receipt of
a Redemption Notice, then such holder shall be entitled to the remedies provided
in Article VIII.C.

     B.  Remedies.   If  the  Corporation  fails  to  eliminate  the  applicable
prohibitions  within the ninety (90) day cure period  referred to in Paragraph A
of this Article VII and thereafter the  Corporation is prohibited,  at any time,
from issuing  shares of Common  Stock or Warrants  upon  conversion  of Series A
Preferred  Stock to any holder  because such issuance would exceed such holder's
allocated  portion of the Cap Amount  because of applicable  law or the rules or
regulations  of any  stock  exchange,  interdealer  quotation  system  or  other
self-regulatory  organization  with  jurisdiction  over the  Corporation  or its
securities,  any  holder  who is so  prohibited  from  converting  its  Series A
Preferred Stock may elect any or both of the following additional remedies:


                                      -10-
<PAGE>

          (i) to require,  with the consent of holders of at least fifty percent
(50%) of the  outstanding  shares of Series A  Preferred  Stock  (including  any
shares  of  Series  A  Preferred  Stock  held  by the  requesting  holder),  the
Corporation to terminate the listing of its Common Stock on the Nasdaq  National
Market ("Nasdaq") (or any other stock exchange,  interdealer quotation system or
trading  market) and to cause its Common Stock to be eligible for trading on the
Nasdaq SmallCap Market or on the over-the-counter  electronic bulletin board, at
the option of the requesting holder; or

          (ii) to require the  Corporation  to issue  shares of Common Stock and
Warrants in accordance  with such holder's  Notice of Conversion at a conversion
price equal to the average of the Closing Bid Prices of the Common Stock for the
five (5) consecutive trading days (subject to equitable adjustment for any stock
splits,  stock dividends,  reclassifications  or similar events during such five
(5) trading day period) preceding the date of the holder's written notice to the
Corporation  of its  election  to receive  shares of Common  Stock and  Warrants
pursuant to this subparagraph (ii).

                     VIII. REDEMPTION DUE TO CERTAIN EVENTS

     A.  Redemption  by Holder.  In the event (each of the events  described  in
clauses  (i)-(v) below after  expiration of the applicable  cure period (if any)
being a "Redemption Event"):

          (i) the Common  Stock  (including  any of the  shares of Common  Stock
issuable  upon  conversion  of the Series A Preferred  Stock and exercise of the
Warrants issuable upon conversion  thereof) is suspended from trading on any of,
or is not listed (and  authorized)  for trading on at least one of, the New York
Stock  Exchange,  the American  Stock Exchange or Nasdaq for an aggregate of ten
(10) trading days in any nine (9) month period,

          (ii) the Corporation fails, and any such failure continues uncured for
five (5)  business  days  after the  Corporation  has been  notified  thereof in
writing by the holder,  to remove any  restrictive  legend on any certificate or
any shares of Common  Stock or any  Warrants  issued to the  holders of Series A
Preferred  Stock upon  conversion  of the Series A  Preferred  Stock as and when
required by this Certificate of Designation,  the Securities Purchase Agreement,
the Warrants or the Registration Rights Agreement, dated as of April 9, 1997, by
and among the Corporation and the other signatories  thereto (the  "Registration
Rights Agreement"),

          (iii)  the  Corporation  provides  notice  to any  holder  of Series A
Preferred Stock,  including by way of public  announcement,  at any time, of its
intention  not to issue  shares of Common  Stock or  Warrants  to any  holder of
Series A Preferred  Stock upon  conversion in accordance  with the terms of this
Certificate of Designation (other than due to the circumstances  contemplated by
Articles V or VII for which the  holders  shall have the  remedies  set forth in
such Articles),


                                      -11-
<PAGE>

          (iv) the Corporation  breaches any material covenant or other material
term or condition of this Certificate of Designation (other than as specifically
provided in subparagraphs  (i)(v) of this Paragraph A), the Securities  Purchase
Agreement or the  Registration  Rights Agreement and such breach continues for a
period of  fifteen  (15)  business  days  after  written  notice  thereof to the
Corporation, or

          (v) any  representation  or  warranty of the  Corporation  made in any
agreement,  statement or  certificate  given in writing in  connection  with the
issuance of the Series A Preferred Stock  (including,  without  limitation,  the
Securities Purchase Agreement and the Registration  Rights Agreement),  shall be
false or  misleading  in any material  respect when made and the breach of which
would have a material  adverse  effect on the  Corporation  or the rights of the
Corporation with respect to any of the shares of Series A Preferred Stock or the
shares of Common Stock issuable upon conversion thereof;

then, upon the occurrence of any such Redemption Event, each holder of shares of
Series A Preferred Stock shall thereafter have the option,  exercisable in whole
or in part at any time and from time to time by delivery of a Redemption  Notice
(as defined in Paragraph C below) to the Corporation while such Redemption Event
continues,  to require the  Corporation  to purchase  for cash any or all of the
then  outstanding  shares of Series A Preferred Stock held by such holder for an
amount per share  equal to the  Redemption  Amount (as  defined in  Paragraph  B
below) in effect at the time of the redemption  hereunder.  For the avoidance of
doubt, the occurrence of any event described in clauses (i) or (iii) above shall
immediately constitute a Redemption Event and there shall be no cure period.

     B. Definition of Redemption Amount. The "Redemption Amount" with respect to
a share of Series A Preferred Stock means an amount equal to:

                          1,000 + P             X      M                       
                       -----------------
                             C P                                        
                                    
where:                   

     "P" means the  accrued  Premium on such share of Series A  Preferred  Stock
through the date of redemption;

     "CP"  means the  Conversion  Price in effect on the date of the  Redemption
Notice; and

     "M" means the  highest  Closing  Bid Price of the  Company's  Common  Stock
during the period  beginning on the date of the Redemption  Notice and ending on
the date of the redemption,  as reported on the principal securities exchange or
trading market on which the Common Stock is traded.

     C.  Redemption  Defaults.  If the  Corporation  fails to pay any holder the
Redemption  Amount with respect to any share of Series A Preferred  Stock within
five (5) business days of its


                                      -12-
<PAGE>

receipt of a notice requiring such redemption (a "Redemption Notice"),  then the
holder of Series A Preferred Stock  delivering such Redemption  Notice (i) shall
be entitled to  interest on the  Redemption  Amount at a per annum rate equal to
the lower of twenty-four  percent (24%) and the highest  interest rate permitted
by  applicable  law from the date of the  Redemption  Notice  until  the date of
redemption  hereunder,  and (ii) shall have the right, at any time and from time
to time, to require the Corporation, upon written notice, to immediately convert
(in  accordance  with the terms of Paragraph A of Article IV) all or any portion
of the  Redemption  Amount,  plus interest as  aforesaid,  into shares of Common
Stock and Warrants at the lowest  Conversion  Price in effect  during the period
beginning on the date of the Redemption Notice and ending on the Conversion Date
with  respect to the  conversion  of such  Redemption  Amount.  In the event the
Corporation is not able to redeem all of the shares of Series A Preferred  Stock
subject to Redemption  Notices,  the Corporation shall redeem shares of Series A
Preferred  Stock from each holder pro rata,  based on the total number of shares
of Series A Preferred  Stock  included by such holder in the  Redemption  Notice
relative to the total number of shares of Series A Preferred Stock in all of the
Redemption Notices.

     D. Redemption by Corporation.

          (i) During the  thirty  (30)  calendar  day  period  beginning  on the
trading day following the first ten (10) consecutive trading day period (if any)
that the  average of the  Closing  Bid Prices for the Common  Stock is less than
$3.02 per share  (subject  to  equitable  adjustments  for stock  splits,  stock
dividends, reclassifications or similar events) and provided the Corporation has
not  previously  had the  opportunity  to prepay any  portion of the  Debentures
pursuant  to Article I thereof and is not in  material  violation  of any of its
obligations  under this  Certificate of  Designations,  the Securities  Purchase
Agreement or the Registration Rights Agreement,  then the Corporation shall have
the right to redeem ("Redemption at Corporation's  Election") all or any portion
of the then outstanding  Series A Preferred Stock (other than Series A Preferred
Stock  which is the  subject of a Notice of  Conversion  delivered  prior to the
delivery  date of the  Optional  Redemption  Notice (as defined  below)) for the
Optional Redemption Amount (as defined below),  which right shall be exercisable
one time while any Series A Preferred  Stock are  outstanding by the Corporation
in its sole discretion by delivery of an Optional  Redemption Notice during such
thirty  (30)  day  period  and  otherwise  in  accordance  with  the  redemption
procedures set forth below. Any optional redemption pursuant to this Paragraph D
shall  be made  ratably  among  the  holders  of  Series  A  Preferred  Stock in
proportion to the number of shares of Series A Preferred Stock then outstanding.
Holders of Series A Preferred  Stock may convert all or any part of their shares
of Series A Preferred Stock selected for redemption  hereunder into Common Stock
and  Warrants  at a  conversion  price  equal to the  average of the Closing Bid
Prices for the ten (10)  consecutive  trading  days  ending on the  trading  day
immediately  preceding the Conversion Date (subject to equitable  adjustment for
any stock splits,  stock dividends,  reclassifications  or similar events during
such ten (10) trading day period) by  delivering a Notice of  Conversion  to the
Corporation  at any time prior to the Effective Date of Redemption as defined in
subparagraph (iii). The "Optional  Redemption Amount" with respect to each share
of Series A  Preferred  Stock means (a) 120%  multiplied  by the sum of the Face
Amount  thereof  plus all accrued  and unpaid  Premium  and  Conversion  Default
Payments (if any) through the date of  redemption  plus (b) Warrants to purchase
forty percent (40%)


                                      -13-
<PAGE>

of the number of shares of Common  Stock which  would have been  issuable to the
holder of such  share of  Series A  Preferred  Stock had such  share of Series A
Preferred Stock been converted into Common Stock and Warrants in accordance with
Article IV.A on the date of delivery of the Optional Redemption Notice.

          (ii) The Corporation may not deliver an Optional  Redemption Notice to
a holder of Series A Preferred  Stock unless on or prior to the date of delivery
of such Optional  Redemption  Notice,  the Corporation shall have deposited with
NationsBank,  N.A. or another escrow agent reasonably acceptable to holders of a
majority of the outstanding shares of Series A Preferred Stock, as a trust fund,
cash and Warrants  sufficient  in amount to pay all amounts to which the holders
of Series A  Preferred  Stock are  entitled  upon such  redemption  pursuant  to
subparagraph  (i)  of  this  Paragraph  D,  with  irrevocable  instructions  and
authority to such  transfer  agent or escrow  agent to complete  the  redemption
thereof in  accordance  with this  Paragraph D. Any Optional  Redemption  Notice
delivered  in  accordance  with  the  immediately  preceding  sentence  shall be
accompanied by a statement executed by a duly authorized officer of its transfer
agent or escrow agent,  certifying  the amount of funds and Warrants  which have
been  deposited  with such transfer  agent or escrow agent and that the transfer
agent or escrow agent has been instructed and agrees to act as redemption  agent
hereunder.

          (iii) The Corporation  shall effect each redemption under this Section
VIII.D  by  giving at least  five (5)  business  days but not more than ten (10)
business days prior written  notice (the  "Optional  Redemption  Notice") of the
date  which such  redemption  is to become  effective  (the  "Effective  Date of
Redemption"), the shares of Series A Preferred Stock selected for redemption and
the Optional  Redemption  Amount to (i) the holders of Series A Preferred  Stock
selected  for  redemption  at the  address and  facsimile  number of such holder
appearing in the  Corporation's  register  for the Series A Preferred  Stock and
(ii) the transfer agent for the Common Stock,  which Optional  Redemption Notice
shall  be  deemed  to  have  been  delivered  on  the  business  day  after  the
Corporation's  fax (with a copy sent by  overnight  courier  to the  holders  of
Series A  Preferred  Stock) of such  notice to the holders of Series A Preferred
Stock.

          (iv) The Optional Redemption Amount shall be paid to the holder of the
Series A Preferred  Stock being  redeemed  within three (3) business days of the
Effective Date of Redemption;  provided, however, that the Corporation shall not
be  obligated  to deliver any portion of the  Optional  Redemption  Amount until
either the  certificates  evidencing the Series A Preferred Stock being redeemed
are delivered to the office of the  Corporation  or the transfer  agent,  or the
holder  notifies the  Corporation or the transfer  agent that such  certificates
have been lost, stolen or destroyed and delivers the documentation in accordance
with Article XIV.D hereof.  Notwithstanding  anything herein to the contrary, in
the event that the  certificates  evidencing the Series A Preferred  Stock being
redeemed are not delivered to the Corporation or the transfer agent prior to the
3rd business day following the Effective Date of  Redemption,  the redemption of
the Series A Preferred  Stock  pursuant to this  Article  VIII.D  shall still be
deemed  effective  as of the  Effective  Date of  Redemption  and  the  Optional
Redemption  Amount shall be paid to the holder of Series A Preferred Stock being
redeemed within five (5) business days of the date the certificates


                                      -14-
<PAGE>

evidencing the Series A Preferred Stock being redeemed are actually delivered to
the Corporation or the transfer agent.

                                    IX. RANK

     All  shares of the  Series A  Preferred  Stock  shall rank (i) prior to the
Corporation's common stock, par value $.01 per share (the "Common Stock");  (ii)
prior to any class or  series  of  capital  stock of the  Corporation  hereafter
created  (unless,  with the consent of the  holders of Series A Preferred  Stock
obtained in accordance with Article XIII hereof, such class or series of capital
stock specifically,  by its terms, ranks senior to or pari passu with the Series
A Preferred Stock)  (collectively,  with the Common Stock, "Junior Securities");
(iii) pari passu  with any class or series of capital  stock of the  Corporation
hereafter  created (with the consent of the holders of Series A Preferred  Stock
obtained in accordance with Article XIII hereof)  specifically  ranking,  by its
terms,   on  parity  with  the  Series  A  Preferred   Stock  (the  "Pari  Passu
Securities");  and (iv)  junior to any class or series of  capital  stock of the
Corporation  hereafter  created  (with the  consent  of the  holders of Series A
Preferred  Stock obtained in accordance  with Article XIII hereof)  specifically
ranking,  by its terms,  senior to the  Series A  Preferred  Stock (the  "Senior
Securities"),  in each  case as to  distribution  of  assets  upon  liquidation,
dissolution or winding up of the Corporation, whether voluntary or involuntary.

                            X. LIQUIDATION PREFERENCE

     A. If the  Corporation  shall  commence  a  voluntary  case  under the U.S.
Federal  bankruptcy  laws or any  other  applicable  bankruptcy,  insolvency  or
similar  law,  or consent to the entry of an order for relief in an  involuntary
case under any law or to the  appointment of a receiver,  liquidator,  assignee,
custodian,  trustee, sequestrator (or other similar official) of the Corporation
or of any  substantial  part of its  property,  or make  an  assignment  for the
benefit of its  creditors,  or admit in writing its  inability  to pay its debts
generally  as they  become due, or if a decree or order for relief in respect of
the Corporation shall be entered by a court having  jurisdiction in the premises
in an  involuntary  case  under the U.S.  Federal  bankruptcy  laws or any other
applicable bankruptcy, insolvency or similar law resulting in the appointment of
a receiver,  liquidator,  assignee,  custodian,  trustee, sequestrator (or other
similar official) of the Corporation or of any substantial part of its property,
or ordering the winding up or liquidation of its affairs, and any such decree or
order  shall be  unstayed  and in effect for a period of sixty (60)  consecutive
days and,  on  account  of any such  event,  the  Corporation  shall  liquidate,
dissolve or wind up, or if the Corporation shall otherwise  liquidate,  dissolve
or wind up (a "Liquidation Event"), no distribution shall be made to the holders
of any shares of capital stock of the Corporation (other than Senior Securities)
upon liquidation,  dissolution or winding up unless prior thereto the holders of
shares  of  Series  A  Preferred  Stock  shall  have  received  the  Liquidation
Preference with respect to each share.  If, upon the occurrence of a Liquidation
Event, the assets and funds available for distribution  among the holders of the
Series  A  Preferred  Stock  and  holders  of Pari  Passu  Securities  shall  be
insufficient to permit the payment to


                                      -15-
<PAGE>

such holders of the preferential amounts payable thereon, then the entire assets
and funds of the Corporation  legally available for distribution to the Series A
Preferred Stock and the Pari Passu Securities shall be distributed ratably among
such shares in proportion to the ratio that the Liquidation  Preference  payable
on each such share bears to the aggregate Liquidation  Preference payable on all
such shares.

     B. The purchase or redemption by the  Corporation of stock of any class, in
any manner permitted by law, shall not, for the purposes hereof,  be regarded as
a  liquidation,  dissolution  or  winding  up of the  Corporation.  Neither  the
consolidation or merger of the Corporation with or into any other entity nor the
sale or transfer by the Corporation of less than substantially all of its assets
shall,  for the purposes hereof,  be deemed to be a liquidation,  dissolution or
winding up of the Corporation.

     C.  The  "Liquidation  Preference"  with  respect  to a share  of  Series A
Preferred  Stock  means an  amount  equal to the Face  Amount  thereof  plus the
Premium  thereon  through  the  date  of  final  distribution.  The  Liquidation
Preference  with respect to any Pari Passu  Securities  shall be as set forth in
the Certificate of Designation filed in respect thereof.

                     XI. ADJUSTMENTS TO THE CONVERSION PRICE

     The  Conversion  Price shall be subject to adjustment  from time to time as
follows:

     A.  Stock  Splits,  Stock  Dividends,  Etc.  If at any time on or after the
Closing Date, the number of outstanding shares of Common Stock is increased by a
stock split,  stock  dividend,  combination,  reclassification  or other similar
event, the Fixed Conversion Price shall be  proportionately  reduced,  or if the
number of  outstanding  shares of Common Stock is  decreased by a reverse  stock
split,  combination or  reclassification  of shares, or other similar event, the
Fixed Conversion Price shall be  proportionately  increased.  In such event, the
Corporation shall notify the  Corporation's  transfer agent of such change on or
before the effective date thereof.

     B. [Intentionally Omitted]

     C. Adjustment Due to Merger, Consolidation,  Etc. If, at any time after the
Closing  Date,  there  shall  be  (i)  any  reclassification  or  change  of the
outstanding  shares of Common Stock  (other than a change in par value,  or from
par value to no par value,  or from no par value to par value, or as a result of
a  subdivision  or  combination),  (ii)  any  consolidation  or  merger  of  the
Corporation  with any other entity (other than a merger in which the Corporation
is the surviving or continuing entity and its capital stock is unchanged), (iii)
any  sale  or  transfer  of  all or  substantially  all  of  the  assets  of the
Corporation or (iv) any share exchange  pursuant to which all of the outstanding
shares of Common Stock are converted into other securities or property, then the
holders of Series A Preferred  Stock shall  thereafter have the right to receive
upon conversion,  in lieu of the shares of Common Stock and Warrants immediately
theretofore issuable, such shares of stock, securities and/or other


                                      -16-
<PAGE>

property  as may be issued or payable  with  respect to or in  exchange  for the
number of shares of Common Stock and Warrants  immediately  theretofore issuable
upon   conversion   had  such   merger,   consolidation,   exchange  of  shares,
recapitalization,  reorganization or other similar event not taken place, and in
any such case,  appropriate  provisions shall be made with respect to the rights
and interests of the holders of the Series A Preferred Stock to the end that the
provisions hereof (including,  without limitation,  provisions for adjustment of
the  Conversion  Price and of the number of shares of Common  Stock and Warrants
issuable upon  conversion of the Series A Preferred  Stock) shall  thereafter be
applicable,  as nearly as may be  practicable in relation to any shares of stock
or  securities   thereafter   deliverable  upon  the  conversion  thereof.   The
Corporation  shall not effect any  transaction  described  in this  Paragraph  C
unless (i) each holder of Series A Preferred  Stock has received  written notice
of such  transaction  at least thirty (30) days prior  thereto,  but in no event
later  than ten (10) days  prior to the  record  date for the  determination  of
shareholders entitled to vote with respect thereto; provided,  however, that the
Corporation shall not be required to disclose any material inside information to
a holder of Series A Preferred Stock prior to the public disclosure thereof, and
(ii) the  resulting  successor  or  acquiring  entity  (if not the  Corporation)
assumes by written  instrument  the  obligations  of this Paragraph C. The above
provisions  shall  apply  regardless  of whether or not there  would have been a
sufficient  number of  shares  of Common  Stock  authorized  and  available  for
issuance upon conversion of the shares of Series A Preferred  Stock  outstanding
and  the  Warrants  issuable  upon  conversion  thereof  as of the  date of such
transaction,   and  shall  similarly  apply  to  successive   reclassifications,
consolidations, mergers, sales, transfers or share exchanges.

     D.  Adjustment Due to  Distribution.  If at any time after the Closing Date
the Corporation  shall declare or make any distribution of its assets (or rights
to acquire  its  assets) to  holders  of Common  Stock as a partial  liquidating
dividend,  by way of return of capital or otherwise  (including  any dividend or
distribution to the  Corporation's  shareholders in cash or shares (or rights to
acquire  shares)  of  capital  stock  of a  subsidiary  (i.e.  a  spin-off))  (a
"Distribution"), then the holders of Series A Preferred Stock shall be entitled,
upon any  conversion  of shares of Series A  Preferred  Stock  after the date of
record for determining  shareholders  entitled to such Distribution,  to receive
the  amount of such  assets  which  would have been  payable to the holder  with
respect to the shares of Common Stock  issuable  upon such  conversion  had such
holder been the holder of such shares of Common Stock on the record date for the
determination of shareholders entitled to such Distribution.

     E. Issuance of Other Securities With Variable  Conversion Price. If, at any
time after the Closing  Date and prior to the first  annual  anniversary  of the
Closing Date, the Corporation  shall issue any securities  which are convertible
into or exchangeable for Common Stock ("Convertible Securities") at a conversion
or exchange  rate based on a discount  from the market price of the Common Stock
at the time of conversion  or exercise,  then the Variable  Conversion  Price in
respect of any conversion of Series A Preferred  Stock after such issuance shall
be calculated utilizing the greatest discount applicable to any such Convertible
Securities.

     F. Purchase Rights.  If at any time after the Closing Date, the Corporation
issues  any  Convertible  Securities  or rights  to  purchase  stock,  warrants,
securities  or other  property  (the  "Purchase  Rights") pro rata to the record
holders of any class of Common Stock, then the holders


                                      -17-
<PAGE>

of  Series A  Preferred  Stock  will be  entitled  to  acquire,  upon the  terms
applicable to such Purchase  Rights,  the aggregate  Purchase  Rights which such
holder  could  have  acquired  if such  holder  had held the number of shares of
Common Stock acquirable upon complete conversion of the Series A Preferred Stock
immediately  before the date on which a record is taken for the grant,  issuance
or sale of such Purchase Rights,  or, if no such record is taken, the date as of
which the record  holders of Common  Stock are to be  determined  for the grant,
issue or sale of such Purchase Rights.

     G.  Notice  of  Adjustments.  Upon the  occurrence  of each  adjustment  or
readjustment  of  the  Conversion   Price  pursuant  to  this  Article  XI,  the
Corporation,   at  its  expense,  shall  promptly  compute  such  adjustment  or
readjustment  and prepare and furnish to each holder of Series A Preferred Stock
a certificate  setting  forth such  adjustment  or  readjustment  and showing in
detail the facts  upon  which such  adjustment  or  readjustment  is based.  The
Corporation  shall, upon the written request at any time of any holder of Series
A Preferred Stock,  furnish to such holder a like certificate  setting forth (i)
such adjustment or readjustment, (ii) the Conversion Price at the time in effect
and (iii) the number of shares of Common Stock and  Warrants and the amount,  if
any, of other  securities  or property  which at the time would be received upon
conversion of a share of Series A Preferred Stock.

                               XII. VOTING RIGHTS

     The  holders  of  the  Series  A  Preferred  Stock  have  no  voting  power
whatsoever, except as otherwise provided by the Virginia General Corporation Law
(the "General Corporate Law"), in this Article XII and in Article XIII below.

     Notwithstanding  the above,  the  Corporation  shall provide each holder of
Series  A  Preferred  Stock  with  prior  notification  of  any  meeting  of the
shareholders  (and  copies  of proxy  materials  and other  information  sent to
shareholders).  If the Corporation  takes a record of its  shareholders  for the
purpose of  determining  shareholders  entitled  to (a)  receive  payment of any
dividend  or  other  distribution,  any  right to  subscribe  for,  purchase  or
otherwise   acquire   (including   by   way   of   merger,    consolidation   or
recapitalization) any share of any class or any other securities or property, or
to receive any other right, or (b) to vote in connection with any proposed sale,
lease  or  conveyance  of  all  or  substantially  all  of  the  assets  of  the
Corporation, or any proposed merger, consolidation,  liquidation, dissolution or
winding  up of the  Corporation,  the  Corporation  shall  mail a notice to each
holder, at least twenty (20) days prior to the record date specified therein (or
thirty  (30)  days  prior  to the  consummation  of the  transaction  or  event,
whichever is earlier,  but in no event earlier than public  announcement of such
proposed  transaction),  of the date on which any such record is to be taken for
the purpose of such vote,  dividend,  distribution,  right or other event, and a
brief  statement  regarding  the amount and  character  of such vote,  dividend,
distribution, right or other event to the extent known at such time.

     To the extent that under the General  Corporate Law the vote of the holders
of the Series A Preferred  Stock,  voting  separately  as a class or series,  as
applicable, is required to authorize a given


                                      -18-
<PAGE>

action of the Corporation,  the affirmative vote or consent of the holders of at
least a majority of the shares of the Series A Preferred Stock  represented at a
duly held  meeting  at which a quorum is  present  or by  written  consent  of a
majority of the shares of Series A Preferred  Stock  (except as otherwise may be
required under the General  Corporate Law) shall constitute the approval of such
action by the class. To the extent that under the General  Corporate Law holders
of the Series A Preferred Stock are entitled to vote on a matter with holders of
Common  Stock,  voting  together as one class,  each share of Series A Preferred
Stock  shall be  entitled  to a number of votes equal to the number of shares of
Common  Stock into which it is then  convertible  using the record  date for the
taking of such vote of shareholders as the date as of which the Conversion Price
is calculated.

                           XIII. PROTECTION PROVISIONS

     So long as any  shares of Series A  Preferred  Stock are  outstanding,  the
Corporation  shall not, without first obtaining the approval (by vote or written
consent,  as provided by the General Corporate Law) of the holders of at least a
majority of the then outstanding shares of Series A Preferred Stock:

          (a) alter or change  the  rights,  preferences  or  privileges  of the
Series A Preferred Stock;

          (b) alter or change  the  rights,  preferences  or  privileges  of any
capital  stock  of the  Corporation  so as to  affect  adversely  the  Series  A
Preferred Stock;

          (c)  create  any new  class  or  series  of  capital  stock  having  a
preference  over the Series A Preferred  Stock as to distribution of assets upon
liquidation, dissolution or winding up of the Corporation (as previously defined
in Article IX hereof, "Senior Securities");

          (d) create any new class or series of capital stock ranking pari passu
with the Series A Preferred Stock as to distribution of assets upon liquidation,
dissolution or winding up of the Corporation  (as previously  defined in Article
IX hereof, "Pari Passu Securities");

          (e)  increase  the  authorized  number of shares of Series A Preferred
Stock;

          (f)  issue  any  shares  of Series A  Preferred  Stock  other  than in
exchange for the Debentures in accordance with the terms of the Debentures as in
effect on October 6, 1997; or

          (g) redeem,  or declare or pay any cash dividend or  distribution  on,
any Junior Securities.

If  holders of at least a majority  of the then  outstanding  shares of Series A
Preferred  Stock agree to allow the  Corporation  to alter or change the rights,
preferences or privileges of the shares of Series


                                      -19-
<PAGE>

A Preferred Stock pursuant to subsection (a) above,  then the Corporation  shall
deliver notice of such approved  change to the holders of the Series A Preferred
Stock that did not agree to such alteration or change (the "Dissenting Holders")
and the  Dissenting  Holders  shall have the right,  for a period of thirty (30)
days, to convert  pursuant to the terms of this  Certificate  of  Designation as
they  existed  prior to such  alteration  or change or to continue to hold their
shares of Series A Preferred Stock.

                               XIV. MISCELLANEOUS

     A.  Cancellation  of Series A  Preferred  Stock.  If any shares of Series A
Preferred  Stock are  converted  pursuant to Article IV, the shares so converted
shall be  canceled,  shall  return to the  status of  authorized,  but  unissued
preferred  stock of no  designated  series,  and  shall not be  issuable  by the
Corporation as Series A Preferred Stock.

     B. Lost or Stolen  Certificates.  Upon  receipt by the  Corporation  of (i)
evidence of the loss,  theft,  destruction or mutilation of any Preferred  Stock
Certificate(s)  and  (ii) (y) in the case of  loss,  theft  or  destruction,  of
indemnity  reasonably  satisfactory  to the  Corporation,  or (z) in the case of
mutilation,   upon   surrender  and   cancellation   of  the   Preferred   Stock
Certificate(s),  the  Corporation  shall execute and deliver new Preferred Stock
Certificate(s)  of like tenor and date.  However,  the Corporation  shall not be
obligated to reissue such lost or stolen Preferred Stock  Certificate(s)  if the
holder  contemporaneously  requests  the  Corporation  to convert  such Series A
Preferred Stock.

     C. [Intentionally Omitted]

     D.  Allocations of Cap Amount and Reserved  Amount.  The initial Cap Amount
and  Reserved  Amount  shall be  allocated  to the holders of Series A Preferred
Stock in the same  proportion  as the  Reserved  Amount and the Cap Amount  were
allocated  to the holders of the  Debentures  on the date such  Debentures  were
converted  into Series A Preferred  Stock.  Each  increase to the Cap Amount and
Reserved  Amount  shall be  allocated  pro rata  among the  holders  of Series A
Preferred  Stock based on the number of shares of Series A Preferred  Stock held
by each holder at the time of the increase in the Cap Amount or Reserved Amount,
as the case may be. In the event a holder shall sell or  otherwise  transfer any
of such holder's shares of Series A Preferred  Stock,  each transferee  shall be
allocated  a pro rata  portion of such  transferor's  Cap  Amount  and  Reserved
Amount. Any portion of the Cap Amount or Reserved Amount which remains allocated
to any person or entity  which does not hold any Series A Preferred  Stock shall
be allocated to the remaining holders of shares of Series A Preferred Stock, pro
rata based on the number of shares of Series A Preferred Stock then held by such
holders.

     E. Statements of Available  Shares.  Upon request,  the  Corporation  shall
deliver to each holder a written report  notifying the holders of any occurrence
which prohibits the  Corporation  from issuing Common Stock or Warrants upon any
such conversion. The report shall also specify (i) the total number of shares of
Series A Preferred  Stock  outstanding  as of the date of the request,  (ii) the
total number of shares of Common Stock and Warrants  issued upon all conversions
of Series A


                                      -20-
<PAGE>

Preferred  Stock  through  the date of the  request,  (iii) the total  number of
shares of Common Stock issued upon exercise of all Warrants  through the date of
the request,  (iv) the total number of shares of Common Stock which are reserved
for issuance  upon  conversion  of the Series A Preferred  Stock and exercise of
Warrants as of the date of the  request,  and (v) the total  number of shares of
Common Stock which may thereafter be issued by the  Corporation  upon conversion
of the Series A Preferred  Stock and exercise of Warrants before the Corporation
would  exceed the Cap Amount and the  Reserved  Amount.  The  Corporation  shall
provide, within fifteen (15) days after delivery to the Corporation of a written
request by any holder, all of the information enumerated in clauses (i) - (v) of
this Paragraph E.

     F. Payment of Cash; Defaults.  Whenever the Corporation is required to make
any cash  payment  to a holder  under  this  Certificate  of  Designation  (as a
Conversion  Default  Payment,  upon redemption or otherwise),  such cash payment
shall be made to the holder within five (5) business days after delivery by such
holder of a notice  specifying that the holder elects to receive such payment in
cash and the method (e.g., by check, wire transfer) in which such payment should
be made.  If such  payment is not  delivered  within such five (5)  business day
period,  such  holder  shall  thereafter  be  entitled to interest on the unpaid
amount at a per annum rate equal to the lower of  twenty-four  percent (24%) and
the highest  interest rate permitted by applicable law until such amount is paid
in full to the holder.  Payment of interest  under this Article XIV.F is in lieu
of and not in addition  to the  interest  provided  for in clause (i) of Article
VIII.C.

     G. Status as  Stockholder.  Upon  submission of a Notice of Conversion by a
holder of Series A Preferred  Stock,  the shares covered thereby shall be deemed
converted  into shares of Common  Stock and the  holder's  rights as a holder of
such  converted  shares of Series A Preferred  Stock shall cease and  terminate,
excepting only the right to receive certificates for such shares of Common Stock
and to any remedies  provided herein or otherwise  available at law or in equity
to such holder because of a failure by the  Corporation to comply with the terms
of this Certificate of Designation.  Notwithstanding the foregoing,  if a holder
has not received  certificates for all shares of Common Stock prior to the tenth
(10th)  business day after the expiration of the Delivery Period with respect to
a conversion of Series A Preferred Stock for any reason, then (unless the holder
otherwise  elects to retain its  status as a holder of Common  Stock) the holder
shall regain the rights of a holder of Series A Preferred  Stock with respect to
such unconverted  shares of Series A Preferred Stock and the Corporation  shall,
as soon as practicable,  return such  unconverted  shares to the holder.  In all
cases,  the holder  shall  retain all of its  rights  and  remedies  (including,
without  limitation,  (i) the  right  to  receive  Conversion  Default  Payments
pursuant to Article  VI.A to the extent  required  thereby  for such  Conversion
Default  and any  subsequent  Conversion  Default and (ii) the right to have the
Conversion Price with respect to subsequent conversions determined in accordance
with Article VI.B) for the  Corporation's  failure to convert Series A Preferred
Stock.

     H.  Remedies  Cumulative.  The  remedies  provided in this  Certificate  of
Designation shall be cumulative and in addition to all other remedies  available
under this Certificate of Designation,  at law or in equity  (including a decree
of specific performance and/or other injunctive relief), and


                                      -21-
<PAGE>

nothing  herein shall limit a holder's  right to pursue  actual  damages for any
failure  by the  Corporation  to comply  with the terms of this  Certificate  of
Designation. The Corporation acknowledges that a breach by it of its obligations
hereunder will cause irreparable harm to the holders of Series A Preferred Stock
and  that  the  remedy  at law  for  any  such  breach  may be  inadequate.  The
Corporation  therefore  agrees,  in the event of any such  breach or  threatened
breach,  the holders of Series A Preferred Stock shall be entitled,  in addition
to all other  available  remedies,  to an  injunction  restraining  any  breach,
without the  necessity  of showing  economic  loss and without any bond or other
security being required.

     I.  Force  Majeure.  Neither  the  Corporation  nor any  holder of Series A
Preferred  Stock  shall be  responsible  for any delay or failure to perform any
obligation  under this  Certificate of Designation to the extent that such delay
or failure is solely caused by fire, flood,  earthquake,  explosion,  war, labor
strike,  riot, act of governmental,  civil or military authority which imposes a
moratorium on the  performance  of the specific  obligation in question or other
comparable  catastrophic  event beyond the  Corporation's  or holder's  control.
Notice with full  details of any such event shall be given to the other party as
promptly as practicable  after its occurrence.  The affected party shall use its
best  efforts  to  minimize  the  effects  of or end  any  such  event  so as to
facilitate the resumption of full performance hereunder.


                                      -22-
<PAGE>

     IN WITNESS  WHEREOF,  this Certificate of Designation is executed on behalf
of the Corporation this __th day of __________, 1997.


                                       FASTCOMM COMMUNICATIONS CORPORATION

                                       By:________________________________


                                      -23-
<PAGE>

                              NOTICE OF CONVERSION

                    (To be Executed by the Registered Holder
                in order to Convert the Series A Preferred Stock)

The undersigned  hereby  irrevocably  elects to convert  ____________  shares of
Series A Preferred Stock (the  "Conversion"),  represented by stock  certificate
Nos(s).  ___________ (the "Preferred Stock  Certificates") into shares of common
stock ("Common Stock") and Warrants of FastComm Communications  Corporation (the
"Corporation")  according to the conditions of the Certificate of  Designations,
Preferences and Rights of Series A Convertible Preferred Stock (the "Certificate
of  Designation"),  as of the date written below. If securities are to be issued
in the name of a person other than the undersigned, the undersigned will pay all
transfer  taxes  payable  with  respect  thereto.  No fee will be charged to the
holder for any  conversion,  except for transfer  taxes,  if any. A copy of each
Preferred Stock  Certificate is attached  hereto (or evidence of loss,  theft or
destruction thereof).

The  undersigned  represents  and  warrants  that all  offers  and  sales by the
undersigned of the securities issuable to the undersigned upon conversion of the
Series A Preferred  Stock shall be made pursuant to  registration  of the Common
Stock under the Securities  Act of 1933, as amended (the "Act"),  or pursuant to
an exemption from registration under the Act.

                            Date of Conversion:___________________________

                            Applicable Conversion Price:____________________

                            Amount of Conversion Default Payments
                            to be Converted, if any:______________________

                            Number of Shares of
                            Common Stock to be Issued:_____________________

                            Number of Warrants to be Issued:________________

                            Signature:____________________________________

                            Name:_______________________________________

                            Address:______________________________________

ACKNOWLEDGED AND AGREED:

FASTCOMM COMMUNICATIONS CORPORATION

BY:___________________________

NAME:________________________

TITLE:________________________                        DATE:____________________


* The  Corporation  is not  required to issue shares of Common Stock or Warrants
until the original Preferred Stock Certificate(s) (or evidence of loss, theft or
destruction  thereof) to be  converted  are received by the  Corporation  or its
transfer agent.  The Corporation  shall issue and deliver shares of Common Stock
and  Warrants  to an  overnight  courier not later than the later of (a) two (2)
business days following receipt of this Notice of Conversion and (b) delivery of
the  original  Preferred  Stock  Certificates  (or  evidence  of loss,  theft or
destruction  thereof) and shall make  payments  pursuant to the  Certificate  of
Designation for the failure to make timely delivery.



                                                                         EXHIBIT
                                                                          5.1


                                               April 28, 1997

Fastcomm Communications Corporation
45472 Holiday Drive
Sterling, Virginia 20166

               Re:  Registration Statement on Form S-3

Dear Sirs:

     We have acted as counsel to FastComm Communications Corporation, a Virginia
Corporation (the "Company"),  in connection with the preparation and filing with
the  Securities  and Exchange  Commission  under the Securities Act of 1933 of a
Registration  Statement on Form S-3 (the "Registration  Statement")  relating to
the  registration  of 3,190,591  shares (the  "Shares") of the Company's  Common
Stock, par value $.01 per share.

     In so acting, we have examined  originals,  or copies exchange or otherwise
identified  to  our  satisfaction,   of  such  corporate   records,   documents,
certificates  and  other  instruments  as in  our  judgement  are  necessary  or
appropriate to enable us to render the opinion expressed below.

     We are of the following opinion:

     1. The  Company  has been duly  incorporated  and is validly  existing as a
corporation in good standing under the laws of the Commonwealth of Virginia.

     2. The Shares have been duly  authorized and when issued will be fully paid
and non-assessable.

     We  consent to the use of this  opinion  as an exhibit to the  Registration
Statement  and to  the  use  of  our  name  under  the  "Legal  Matters"  in the
Registration  Statement.  In giving  this  consent,  we do not admit that we are
acting within the category of persons whose consent is required  under Section 7
of the Securities Act of 1933.

                                            Very truly yours,

                                            /s/ Amon & Sabatini



                                                                    Exhibit 23.1

                              Accountants' Consent

We  consent  to  the  use  of  our  report  incorporated  by  reference  in  the
registration statement on Form S-3 regarding Fastcomm Communications Corporation
dated  June 21,  1996,  and to the  reference  to our  firm  under  the  heading
"Experts" in the registration statement.


/s/ BDO SEIDMAN, LLP

BDO Seidman, LLP
Atlanta, Georgia
April 28, 1997



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