ALPHA BETA TECHNOLOGY INC
8-K, 1998-10-23
PHARMACEUTICAL PREPARATIONS
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<PAGE>   1


                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

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


                                    FORM 8-K

                                 CURRENT REPORT


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



                Date of Report (Date of earliest event reported)
                                OCTOBER 21, 1998


                           ALPHA-BETA TECHNOLOGY, INC.
               --------------------------------------------------
               (Exact name of registrant as specified in charter)


<TABLE>
<S>                                          <C>                                           <C>       
         MASSACHUSETTS                              000-20023                                  04-2997834
- ----------------------------                 ------------------------                      -------------------
(State or other jurisdiction                 (Commission file number)                        (IRS employer
       of incorporation)                                                                   identification no.)
</TABLE>


          THREE BIOTECH PARK, ONE INNOVATION DRIVE, WORCESTER, MA 01605
          -------------------------------------------------------------
               (Address of principal executive offices) (Zip code)


       Registrant's telephone number, including area code: (508) 798-6900
                                                           --------------

<PAGE>   2
ITEM 5 - OTHER EVENTS

         On October 21, 1998, Alpha-Beta Technology, Inc. (the "Registrant")
entered into a Securities Purchase Agreement with HFTP Investments LLC (the
"Investor") pursuant to which the Registrant (i) issued 1,500 shares of series F
convertible preferred stock (the "Preferred Stock") to the Investor, and (ii) is
obligated to issue an additional 1,500 shares of Preferred Stock upon the
effectiveness of a resale registration statement covering the shares of the
Registrant's common stock, par value $.01 per share (the "Common Stock"),
issuable upon exercise of the 3,000 shares of Preferred Stock. The issuance of
the second tranche of Preferred Stock is also subject to certain other closing
conditions.

         Subject to certain anti-dilution provisions, the Preferred Stock is
convertible into Common Stock at a conversion price equal to the lesser of a
fixed cap (the "Fixed Cap") and a 15% discount to the average closing price of
the Common Stock for the five trading days immediately preceding the date of
conversion. Initially, the Fixed Cap equals $1.50. Upon issuance of the second
tranche of Preferred Stock, the Fixed Cap will be redetermined utilizing a
formula which is based in part on the number of shares of Common Stock reserved
for issuance upon conversion of the Preferred Stock. The transaction
documentation prohibits the issuance of a number of shares of Common Stock upon
exercise of the Preferred Stock in excess of 19.99% of the number of shares of
Common Stock outstanding immediately prior to such issuance without first
obtaining stockholder approval.

         The purchase price for the Preferred Stock is $1,000 per share (or an
aggregate of $1,500,000 for the first tranche of Preferred Stock and $1,500,000
for the second tranche of Preferred Stock). In connection with the transaction,
consultants received an aggregate of $150,000, 11,250 shares of Common Stock and
warrants exercisable for 25,000 shares of Common Stock. The Registrant will use
the net proceeds from the investment for the Company's ongoing Phase III
clinical trial of Betafectin AE for the prevention of serious post-operative
infections, as well as the Company's novel antifungal research program.

         In connection with the foregoing, on October 22, 1998, the Registrant
amended its Shareholder Rights Agreement dated as of February 2, 1997, as
amended on November 13, 1997 (the "Rights Plan"), between the Registrant and
BankBoston, N.A. f/k/a The First National Bank of Boston, as Rights Agent, in
order to exempt acquisitions of the Registrant's Common Stock by the Investor
from the operation of the provisions of the Rights Plan.

ITEM 7 - FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS

         (c)        Exhibits.

Exhibit             Name
- -------             ----

4.1                 Securities Purchase Agreement dated as of October 21, 1998
                    by and among Alpha-Beta Technology, Inc. and HFTP
                    Investments LLC


<PAGE>   3



4.2                 Registration Rights Agreement dated as of October 21, 1998
                    by and among Alpha-Beta Technology, Inc. and HFTP
                    Investments LLC

4.3                 Certificate of Vote of Amending and Restating Terms Series F
                    Convertible Preferred Stock Prior to Issuance of Alpha-Beta
                    Technology, Inc. filed with the Secretary of State of The
                    Commonwealth of Massachusetts on October 21, 1998

4.4                 Second Amendment dated as of October 21, 1998 to Shareholder
                    Rights Agreement dated as of February 2, 1997, as amended on
                    November 13, 1997, between Alpha-Beta Technology, Inc. and
                    BankBoston, N.A. f/k/a The First National Bank of Boston, as
                    Rights Agent


<PAGE>   4




                                   SIGNATURES



      Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.

                                             ALPHA-BETA TECHNOLOGY, INC.



Date: October 22, 1998                       By: /s/ Joseph M. Grimm
                                                 -------------------------------
                                                 Name: Joseph M. Grimm
                                                 Title: Chief Financial Officer


<PAGE>   5



                                  EXHIBIT INDEX


Exhibit                     Name
- -------                     ----

4.1                 Securities Purchase Agreement dated as of October 21, 1998
                    by and among Alpha-Beta Technology, Inc. and HFTP
                    Investments LLC

4.2                 Registration Rights Agreement dated as of October 21, 1998
                    by and among Alpha-Beta Technology, Inc. and HFTP
                    Investments LLC

4.3                 Certificate of Vote of Directors Amending and Restating
                    Terms Series F Convertible Preferred Stock Prior to Issuance
                    of Alpha-Beta Technology, Inc. filed with the Secretary of
                    State of The Commonwealth of Massachusetts on October 21,
                    1998

4.4                 Second Amendment dated as of October 21, 1998 to Shareholder
                    Rights Agreement dated as of February 2, 1997, as amended on
                    November 13, 1997, between Alpha-Beta Technology, Inc. and
                    BankBoston, N.A. f/k/a The First National Bank of Boston, as
                    Rights Agent




<PAGE>   1
                                                                     EXHIBIT 4.1


                          SECURITIES PURCHASE AGREEMENT


         SECURITIES PURCHASE AGREEMENT (the "AGREEMENT"), dated as of October
21, 1998, by and among Alpha-Beta Technology, Inc., a Massachusetts corporation,
with headquarters located at One Innovation Drive, Worcester, Massachusetts
01605 (the "COMPANY"), and the investors listed on the Schedule of Buyers
attached hereto (individually, a "BUYER" and collectively, the "BUYERS").

         WHEREAS:

         A.       The Company and the Buyers are executing and delivering this
Agreement in reliance upon the exemption from securities registration afforded
by Rule 506 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 "1933 ACT");

         B.       The Company has authorized the following new series of its
Preferred Stock, par value $0.01 per share (the "PREFERRED STOCK"): the
Company's Series F Convertible Preferred Stock (the "PREFERRED SHARES"), which
shall be convertible into shares of the Company's Common Stock, par value $0.01
per share (the "COMMON STOCK") (as converted, the "CONVERSION SHARES"), in
accordance with the terms of the Company's Certificate of Vote of Directors
Establishing Series F Convertible Preferred Stock, substantially in the form
attached hereto as EXHIBIT A (the "CERTIFICATE OF DESIGNATIONS");

         C.       The Buyers wish to purchase, upon the terms and conditions
stated in this Agreement, initially an aggregate of 1500 of the Preferred Shares
(the "INITIAL PREFERRED SHARES") in the respective amounts set forth opposite
each Buyer's name on the Schedule of Buyers on the Initial Closing Date (as
defined below);

         D.       Subject to the terms and conditions set forth in this
Agreement, the Buyers wish to purchase an aggregate of an additional 1500 of the
Preferred Shares (the "ADDITIONAL PREFERRED SHARES") in the respective amounts
set forth opposite each Buyer's name in the Schedule of Buyers on the Additional
Closing Date (as defined below) (the Initial Preferred Shares and the Additional
Preferred Shares collectively are referred to in this Agreement as the
"PREFERRED SHARES"); and

         E.       Contemporaneously with the execution and delivery of this
Agreement, the parties hereto are executing and delivering a Registration Rights
Agreement substantially in the form attached hereto as EXHIBIT B (the
"REGISTRATION RIGHTS AGREEMENT") pursuant to which the Company has agreed to
provide certain registration rights under the 1933 Act and the rules and
regulations promulgated thereunder, and applicable state securities laws.

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

         1.       PURCHASE AND SALE OF PREFERRED SHARES.


<PAGE>   2

                  a. PURCHASE OF PREFERRED SHARES. Subject to satisfaction (or
waiver) of the conditions set forth in Sections 6(a) and 7(a) below, the Company
shall issue and sell to each Buyer and each Buyer severally agrees to purchase
from the Company the respective number of Initial Preferred Shares set forth
opposite such Buyer's name on the Schedule of Buyers, (as defined below) (the
"INITIAL CLOSING"). Subject to the satisfaction (or waiver) of the conditions
set forth in Sections 1(c), 6(b) and 7(b) below, the Company shall issue and
sell to each Buyer and each Buyer severally agrees to purchase from the Company
the respective number of Additional Preferred Shares set forth opposite such
Buyer's name on the Schedule of Buyers (the "ADDITIONAL CLOSING"). The Initial
Closing and the Additional Closing collectively are referred to in this
Agreement as the "CLOSINGS." The purchase price (the "PURCHASE PRICE") of each
Preferred Share at each of the Closings shall be $1,000. Notwithstanding the
foregoing, the aggregate amount of Additional Preferred Shares required to be
purchased by the Buyers shall be reduced on a dollar for dollar basis to the
extent of the amount of financing received by the Company from the issuance of
any equity securities or debt securities with an equity component to Ross
Financial Corporation or its affiliates after the Initial Closing but on or
prior to the Additional Closing Date.

                  b. THE INITIAL CLOSING DATE. The date and time of the Initial
Closing (the "INITIAL CLOSING DATE") shall be 10:00 a.m. Central Time, within
three (3) business days following the date hereof, subject to notification of
satisfaction (or waiver) of the conditions to the Initial Closing set forth in
Sections 6(a) and 7(a) below (or such later date as is mutually agreed to by the
Company and the Buyers). The Initial Closing shall occur on the Initial Closing
Date at the offices of Katten Muchin & Zavis, 525 West Monroe Street, Suite
1600, Chicago, Illinois 60661-3693 or such other place as the parties shall
agree.

                  c. THE ADDITIONAL CLOSING DATE. The date and time of the
Additional Closing (the "ADDITIONAL CLOSING DATE") shall be 10:00 a.m. Central
Time, on the fifth business day following the date of the receipt by each Buyer
of the Additional Share Notice (as defined below) following the date the
Registration Statement (as defined in the Registration Rights Agreement) is
declared effective by the SEC, subject to satisfaction (or waiver) of the
conditions to the Additional Closing set forth in Sections 6(b) and 7(b) and the
conditions set forth in this paragraph (or such later date as is mutually agreed
to by the Company and the Buyers). The Company shall deliver written notice (the
"ADDITIONAL SHARE NOTICE") to each Buyer of the event described in the preceding
sentence on the first business day (the "ADDITIONAL SHARE NOTICE DATE")
following the occurrence of such event. Notwithstanding the foregoing, no Buyer
shall be required to purchase the Additional Preferred Shares unless each of the
following conditions is satisfied: (i) such Buyer shall have received the
Additional Share Notice on or before the second business day after the
Effectiveness Deadline (as defined in the Registration Rights Agreement); (ii)
the Company shall take all action necessary to have on the Additional Closing
Date, Conversion Shares which are (1) authorized and reserved for issuance, (2)
available under rule 4460 of the Nasdaq National Market and (3) available for
resale under the Registration Statement which shall have been declared
effective, of no less than 200% of the sum of (A) the number of Conversion
Shares issuable upon the conversion of all of the outstanding Initial Preferred
Shares and the Additional Preferred Shares to be issued by the Company and (B)
the number of Conversion Shares then held by Buyers; (iii) during the period
beginning on the date of this Agreement and ending on and including the
Additional 


<PAGE>   3

Closing Date, there shall not have occurred (A) a public announcement of a Major
Transaction (as defined in Section 3(c) of the Certificate of Designations)
which has not been abandoned or terminated, (B) a Triggering Event (as defined
in Section 3(d) of the Certificate of Designations) or (C) a Material Adverse
Change (as defined below); (iv) at all times during the period beginning on the
date of this Agreement and ending on and including the Additional Closing Date,
the Common Stock shall have been designated on the Nasdaq National Market and
shall not have been suspended from trading and the Company shall not have been
notified of any pending or threatened proceeding or other action to delist or
suspend the Common Stock; and (vii) and the Company shall not have previously
delivered an Additional Share Notice. The Additional Closing shall occur on the
Additional Closing Date at the offices of Katten Muchin & Zavis, 525 West Monroe
Street, Suite 1600, Chicago, Illinois 60661-3693 or such other place as the
parties shall agree. The Initial Closing Date and the Additional Closing Date
collectively are referred to in this Agreement as the "CLOSING DATES." "MATERIAL
ADVERSE CHANGE" means any change, event, result or happening involving, directly
or indirectly, the Company or any of its Subsidiaries (as defined below)
resulting in a material adverse effect on the business, financial condition or
results of operations of the Company and its Subsidiaries, taken as a whole.

                  d. FORM OF PAYMENT. On each of the Closing Dates, (i) each
Buyer shall pay the Purchase Price to the Company for the Preferred Shares to be
issued and sold to such Buyer at the respective Closing, by wire transfer of
immediately available funds in accordance with the Company's written wire
instructions, and (ii) the Company shall deliver to each Buyer, stock
certificates (in the denominations as such Buyer shall request) (the "STOCK
CERTIFICATES") representing such number of the Preferred Shares which such Buyer
is then purchasing (as indicated opposite such Buyer's name on the Schedule of
Buyers). Such Stock Certificates shall bear the restrictive legends required
pursuant to Section 2(g).

         2.       BUYER'S REPRESENTATIONS AND WARRANTIES.

                  Each Buyer represents and warrants with respect to only itself
that:

                  a. INVESTMENT PURPOSE. Such Buyer (i) is acquiring the
Preferred Shares and (ii) upon conversion of the Preferred Shares, will acquire
the Conversion Shares then issuable (the Preferred Shares and the Conversion
Shares collectively are referred to herein as the "SECURITIES"), for its own
account for investment only and not with a view towards, or for resale in
connection with, the public sale or distribution thereof, except pursuant to
sales registered or exempted under the 1933 Act; provided, however, that by
making the representations herein, such Buyer does not agree to hold any of 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 1933 Act.

                  b. ACCREDITED INVESTOR STATUS. Such Buyer is an "accredited
investor" as that term is defined in Rule 501(a)(3) of Regulation D.

                  c. RELIANCE ON EXEMPTIONS. Such Buyer understands that the
Securities are being offered and sold to it in reliance on specific exemptions
from the registration requirements of United States federal and state securities
laws and that the Company is relying 



<PAGE>   4

in part upon the truth and accuracy of, and such Buyer's compliance with, the
representations, warranties, agreements, acknowledgments and understandings of
such Buyer set forth herein in order to determine the availability of such
exemptions and the eligibility of such Buyer to acquire such securities.

                  d. INFORMATION. Such Buyer and its advisors, if any, have been
furnished with all materials relating to the business, finances and operations
of the Company and materials relating to the offer and sale of the Securities
which have been requested by such Buyer. Such Buyer and its advisors, if any,
have been afforded the opportunity to ask questions of the Company. Neither such
inquiries nor any other due diligence investigations conducted by such Buyer or
its advisors, if any, or its representatives shall modify, amend or affect such
Buyer's right to rely on the Company's representations and warranties contained
in Section 3 below. Such Buyer understands that its investment in the Securities
involves a high degree of risk. Such Buyer has sought such accounting, legal and
tax advice as it has considered necessary to make an informed investment
decision with respect to its acquisition of the Securities.

                  e. NO GOVERNMENTAL REVIEW. Such Buyer understands that no
United States federal or state agency or any other government or governmental
agency has passed on or made any recommendation or endorsement of the Securities
or the fairness or suitability of the investment in the Securities nor have such
authorities passed upon or endorsed the merits of the offering of the
Securities.

                  f. TRANSFER OR RESALE. Such Buyer understands that except as
provided in the Registration Rights Agreement: (i) the Securities have not been
and are not being registered under the 1933 Act or any state securities laws,
and may not be offered for sale, sold, assigned or transferred unless (A)
subsequently registered thereunder, (B) such Buyer shall have, if requested by
the Company, delivered to the Company an opinion of counsel, in a form
reasonably acceptable to the Company, to the effect that such Securities to be
sold, assigned or transferred may be sold, assigned or transferred pursuant to
an exemption from such registration, or (C) such Buyer provides the Company with
assurance reasonably acceptable to the Company that such Securities can be sold,
assigned or transferred pursuant to Rule 144 promulgated under the 1933 Act (or
a successor rule thereto) ("RULE 144"); (ii) any sale of the Securities made in
reliance on Rule 144 may be made only in accordance with the terms of Rule 144
and further, if Rule 144 is not applicable, any resale of the 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 1933 Act) may
require compliance with some other exemption under the 1933 Act or the rules and
regulations of the SEC thereunder; and (iii) neither the Company nor any other
person is under any obligation to register such Securities under the 1933 Act or
any state securities laws or to comply with the terms and conditions of any
exemption thereunder.

                  g. LEGENDS. Such Buyer understands that the certificates or
other instruments representing the Preferred Shares and, until such time as the
sale of the Conversion Shares have been registered under the 1933 Act as
contemplated by the Registration Rights Agreement, the stock certificates
representing the Conversion Shares, 


<PAGE>   5

except as set forth below, shall bear a restrictive legend in substantially the
following form (and a stop-transfer order may be placed against transfer of such
stock certificates):

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE
         SECURITIES LAWS. THE SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT AND
         MAY NOT BE OFFERED FOR SALE, SOLD, TRANSFERRED OR ASSIGNED IN THE
         ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT FOR THE SECURITIES UNDER
         THE SECURITIES ACT OF 1933, AS AMENDED, OR APPLICABLE STATE SECURITIES
         LAWS, OR AN OPINION OF COUNSEL, IN A FORM REASONABLY ACCEPTABLE TO THE
         COMPANY, THAT REGISTRATION IS NOT REQUIRED UNDER SAID ACT OR APPLICABLE
         STATE SECURITIES LAWS OR UNLESS SOLD PURSUANT TO RULE 144 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 the Securities upon which it is
stamped, if, unless otherwise required by state securities laws, (i) such
Securities are registered for sale under the 1933 Act, (ii) in connection with a
sale transaction, such holder provides the Company with an opinion of counsel,
in a generally acceptable form, to the effect that a public sale, assignment or
transfer of such Securities may be made without registration under the 1933 Act,
or (iii) such holder provides the Company with reasonable assurances that such
Securities 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.

                  h. AUTHORIZATION; ENFORCEMENT. This Agreement has been duly
and validly authorized, executed and delivered on behalf of such Buyer and is a
valid and binding agreement of such Buyer enforceable against such Buyer in
accordance with its terms, subject as to enforceability to general principles of
equity and to applicable bankruptcy, insolvency, reorganization, moratorium,
liquidation and other similar laws relating to, or affecting generally, the
enforcement of applicable creditors' rights and remedies.

                  i. RESIDENCY. Such Buyer is a resident of that country
specified on the Schedule of Buyers.

         3.       REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

                  The Company represents and warrants to each of the Buyers
that:

                  a. ORGANIZATION AND QUALIFICATION. The Company and its
"Subsidiaries" (which for purposes of this Agreement means any entity in which
the Company, directly or indirectly, owns capital stock or holds an equity or
similar interest) (a complete list of which is set forth in SCHEDULE 3(a)) are
corporations duly organized and validly existing in good standing under the laws
of the jurisdiction in which they are incorporated, and have the requisite
corporate power and authorization to own their properties and to carry on their

<PAGE>   6

business as now being conducted. Each of the Company and its Subsidiaries is
duly qualified as a foreign corporation to do business and is in good standing
in every jurisdiction in which its ownership of property or the nature of the
business conducted by it makes such qualification necessary, except to the
extent that the failure to be so qualified or be in good standing would not have
a Material Adverse Effect. As used in this Agreement, "MATERIAL ADVERSE EFFECT"
means any material adverse effect on the business, properties, assets,
operations, results of operations or financial condition of the Company and its
Subsidiaries, if any, taken as a whole, or on the transactions contemplated
hereby or by the agreements and instruments to be entered into in connection
herewith, or on the authority or ability of the Company to perform its
obligations under the Transaction Documents (as defined below) or the
Certificate of Designations.

                  b. AUTHORIZATION; ENFORCEMENT; COMPLIANCE WITH OTHER
INSTRUMENTS. (i) The Company has the requisite corporate power and authority to
enter into and perform this Agreement, the Registration Rights Agreement, the
Irrevocable Transfer Agent Instructions, the Second Amendment to the Shareholder
Rights Agreement and each of the other agreements entered into by the parties
hereto in connection with the transactions contemplated by this Agreement
(collectively, the "TRANSACTION DOCUMENTS"), and to issue the Securities in
accordance with the terms hereof and thereof, (ii) the execution and delivery of
the Transaction Documents and the Certificate of Designations by the Company and
the consummation by it of the transactions contemplated hereby and thereby,
including without limitation the issuance of the Preferred Shares and the
reservation for issuance and the issuance of the Conversion Shares issuable upon
conversion thereof, have been duly authorized by the Company's Board of
Directors and no further consent or authorization is required by the Company,
its Board of Directors or its stockholders, except for, if required by the
Principal Market (as defined below), approval by its stockholders prior to the
issuance of a number of shares of Common Stock equal to or in excess of 20% of
the number of shares of common Stock outstanding immediately prior to the
Initial Closing Date; (iii) the Transaction Documents have been duly executed
and delivered by the Company, (iv) the Transaction Documents constitute the
valid and binding obligations of the Company enforceable against the Company in
accordance with their terms, except as such enforceability may be limited by
general principles of equity or applicable bankruptcy, insolvency,
reorganization, moratorium, liquidation or similar laws relating to, or
affecting generally, the enforcement of creditors' rights and remedies, and (v)
prior to each of the Closing Dates, the Certificate of Designations has been
filed with the Secretary of State of The Commonwealth of Massachusetts and will
be in full force and effect, enforceable against the Company in accordance with
its terms. The "PRINCIPAL MARKET" shall mean the securities or trading market
upon which the Common Stock is listed or quoted provided that such market is one
of the following: the Nasdaq National Market, The American Stock Exchange, Inc.
or The New York Stock Exchange, Inc.

                  c. CAPITALIZATION. As of the date hereof, the authorized
capital stock of the Company consists of (i) 30,000,000 shares of Common Stock,
of which as of the date hereof, 20,597,272 shares were issued and outstanding,
2,786,622 shares are issuable and reserved for 




<PAGE>   7

issuance pursuant to the Company's stock option plans and no shares are issuable
and reserved for issuance pursuant to securities (other than the Preferred
Shares) exercisable or exchangeable for, or convertible into, shares of Common
Stock, except as set forth on SCHEDULE 3(c) and (ii) 1,000,000 shares of
preferred stock, which as of the date hereof, no shares were issued and
outstanding, except as set forth on SCHEDULE 3(c). All of such outstanding
shares have been, or upon issuance will be, validly issued and are fully paid
and nonassessable. Except as disclosed in SCHEDULE 3(c), (i) no shares of the
Company's capital stock are subject to preemptive rights or any other similar
rights or any liens or encumbrances suffered or permitted by the Company, (ii)
there are no outstanding debt securities, (iii) 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, any
shares of capital stock of the Company or any of its Subsidiaries, or contracts,
commitments, understandings 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 or options, warrants, scrip, rights to
subscribe to, calls or commitments of any character whatsoever relating to, or
securities or rights convertible into, any shares of capital stock of the
Company or any of its Subsidiaries, (iv) there are no agreements or arrangements
under which the Company or any of its Subsidiaries is obligated to register the
sale of any of their securities under the 1933 Act (except the Registration
Rights Agreement), (v) there are no outstanding securities of the Company or any
of its Subsidiaries which contain any redemption or similar provisions, and
there are no contracts, commitments, understandings or arrangements by which the
Company or any of its Subsidiaries is or may become bound to redeem a security
of the Company or any of its Subsidiaries, (vi) there are no securities or
instruments containing anti-dilution or similar provisions that will be
triggered by the issuance of the Securities as described in this Agreement, and
(vii) the Company does not have any stock appreciation rights or "phantom stock"
plans or agreements or any similar plan or agreement. The Company has furnished
to the Buyers true and correct copies of the Company's Restated Articles of
Organization, as amended and as in effect on the date hereof (the "ARTICLES OF
ORGANIZATION"), and the Company's By-laws, as in effect on the date hereof (the
"BY-LAWS"), and the terms of all securities convertible into or exercisable for
Common Stock and the material rights of the holders thereof in respect thereto.

                  d. ISSUANCE OF SECURITIES. The Preferred Shares are duly
authorized and, upon issuance in accordance with the terms hereof, shall be (i)
validly issued, fully paid and non-assessable, (ii) free from all taxes, liens
and charges with respect to the issue thereof and (iii) entitled to the rights
and preferences set forth in the Certificate of Designations. A number of shares
of Common Stock equal to 200% of the number of Conversion Shares issuable upon
conversion of the Preferred Shares and outstanding on the applicable Closing
Date (after giving effect to the Preferred Shares issued on such Closing Date
and assuming all such outstanding Preferred Shares were fully convertible on
such date regardless of any limitation on the timing or amount of such
conversions) initially have been duly authorized and reserved for issuance
(subject to adjustment pursuant to the Company's covenant set forth in Section
4(f) below) upon conversion of the Preferred Shares. Upon conversion in
accordance with the Certificate of Designations, the Conversion Shares will be
validly issued, fully paid and nonassessable and free from all taxes, liens and
charges with respect to the issue thereof, with the holders being entitled to
all rights accorded to a holder of Common Stock. Based in 



<PAGE>   8

part upon the representations of the Buyers set forth in Section 2, the issuance
by the Company of the Securities is exempt from registration under the 1933 Act.

                  e. NO CONFLICTS. Except as disclosed in SCHEDULE 3(e), the
execution, delivery and performance of the Transaction Documents by the Company,
the performance by the Company of its obligations under the Certificate of
Designations and the consummation by the Company of the transactions
contemplated hereby and thereby will not (i) result in a violation of the
Articles of Incorporation, any Certificate of Designations, Preferences and
Rights of any outstanding series of Preferred Stock of the Company or the
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
material agreement, indenture or material 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 federal and state securities
laws and regulations and the rules and regulations of the principal market or
exchange on which the Common Stock is traded or listed) 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 as disclosed in
SCHEDULE 3(e), neither the Company nor its Subsidiaries is in violation of any
term of or in default under the Articles of Organization, any Certificate of
Designations, Preferences and Rights of any outstanding series of Preferred
Stock or the By-laws or their organizational charter or by-laws, respectively,
or any contract, agreement, mortgage, indebtedness, indenture, instrument,
judgment, decree or order or any statute, rule or regulation applicable to the
Company or its Subsidiaries, except for possible conflicts, defaults,
terminations, amendments, accelerations, cancellations and violations that would
not individually or in the aggregate have a Material Adverse Effect. The
business of the Company and its Subsidiaries is not being conducted in violation
of any law, ordinance, regulation of any governmental entity having authority or
jurisdiction over the Company, except for possible violations the sanctions for
which either individually or in the aggregate would not have a Material Adverse
Effect. Except as specifically contemplated by this Agreement and as required
under the 1933 Act, 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 order for it
to execute, deliver or perform any of its obligations under or contemplated by
the Transaction Documents or to perform its obligations under the Certificate of
Designations, in each case in accordance with the terms hereof or thereof.
Except as disclosed in SCHEDULE 3(e), all consents, authorizations, orders,
filings and registrations which the Company is required to obtain pursuant to
the preceding sentence have been obtained or effected on or prior to the date
hereof. The Company is not in violation of the listing requirements of the
Principal Market as in effect on the date hereof and on each of the Closing
Dates and is not aware of any facts which would reasonably lead to delisting of
the Common Stock by the Principal Market in the foreseeable future.

                  f. SEC DOCUMENTS; FINANCIAL STATEMENTS. Since December 31,
1997, the Company has 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 "1934 ACT")
(all of the foregoing filed prior to the date hereof and all exhibits included
therein and financial statements and schedules thereto and documents

<PAGE>   9

incorporated by reference therein being hereinafter referred to as the "SEC
DOCUMENTS"). The Company has delivered to the Buyers or their respective
representatives true and complete copies of the SEC Documents. As of their
respective dates, the SEC Documents complied in all material respects with the
requirements of the 1934 Act and the rules and regulations of the SEC
promulgated thereunder applicable to the SEC Documents, and none of the SEC
Documents, 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. The financial
statements of the Company included in the SEC Documents have been prepared in
accordance with 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 exclude footnotes or may be condensed
or summary statements) and fairly present in all material respects the financial
position of the Company as of the dates thereof and the results of its
operations and cash flows for the periods then ended (subject, in the case of
unaudited statements, to normal year-end audit adjustments). No other
information provided by or on behalf of the Company to the Buyers which is not
included in the SEC Documents contains any untrue statement of a material fact
or omits to state any material fact necessary in order to make the statements
therein, in the light of the circumstance under which they are or were made, not
misleading.

                  g. ABSENCE OF CERTAIN CHANGES. Except as disclosed in SCHEDULE
3(g) or in the SEC Documents filed at least five (5) days prior to the date
hereof and available on EDGAR, since December 31, 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 or its Subsidiaries. The Company has not taken any steps, and does not
currently expect to take any steps, to seek protection pursuant to any
bankruptcy law nor does the Company or its Subsidiaries have any knowledge or
reason to believe that its creditors intend to initiate involuntary bankruptcy
proceedings.

                  h. ABSENCE OF LITIGATION. 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, the Common Stock or any of the Company's Subsidiaries or
any of the Company's or the Company's Subsidiaries' officers or directors in
their capacities as such, except as set forth in SCHEDULE 3(h).

                  i. ACKNOWLEDGMENT REGARDING BUYERS' PURCHASE OF PREFERRED
SHARES. The Company acknowledges and agrees that each of the Buyers is acting
solely in the capacity of arm's length purchaser with respect to the Transaction
Documents and the transactions contemplated thereby. The Company further
acknowledges that each Buyer is not acting as a financial advisor or fiduciary
of the Company (or in any similar capacity) with respect to the Transaction
Documents and the transactions contemplated thereby and any advice given by any
of the Buyers or any of their respective representatives or agents in connection
with the Transaction Documents and the transactions contemplated thereby is
merely incidental to such Buyer's purchase of the Securities. The Company
further represents to each Buyer that the 




<PAGE>   10

Company's decision to enter into the Transaction Documents has been based solely
on the independent evaluation by the Company and its representatives.

                  j. NO UNDISCLOSED EVENTS, LIABILITIES, DEVELOPMENTS OR
CIRCUMSTANCES. Other than the transactions contemplated hereby, no event,
liability, development or circumstance has occurred or exists with respect to
the Company or its Subsidiaries or their respective business, properties,
operations or financial condition, that would be required to be disclosed by the
Company under applicable securities laws on a registration statement filed with
the SEC relating to an issuance and sale by the Company of its Common Stock and
which has not been publicly announced.

                  k. NO GENERAL SOLICITATION. Neither the Company, nor any of
its affiliates, nor any person acting on its or their behalf, has engaged in any
form of general solicitation or general advertising (within the meaning of
Regulation D under the 1933 Act) in connection with the offer or sale of the
Securities.

                  l. NO INTEGRATED OFFERING. The Company has not, directly or
indirectly, made any offers or sales of any security or solicited any offers to
buy any security, under circumstances that would require registration of any of
the Securities under the 1933 Act or cause this offering of Securities to be
integrated with prior offerings by the Company for purposes of the 1933 Act or
any applicable stockholder approval provisions, including, without limitation,
under the rules and regulations of the Principal Market, nor will the Company or
any of its Subsidiaries take any action or steps that would require registration
of the Securities under the 1933 Act or cause the offering of the Securities to
be integrated with other offerings.

                  m. EMPLOYEE RELATIONS. Neither the Company nor any of its
Subsidiaries is involved in any union labor dispute nor, to the knowledge of the
Company or any of its Subsidiaries, is any such dispute threatened. Neither the
Company nor any of its Subsidiaries is a party to a collective bargaining
agreement, and the Company and its Subsidiaries believe that relations with
their employees are good. No executive officer (as defined in Rule 501(f) of the
1933 Act) has notified the Company that such officer intends to leave the
Company or otherwise terminate such officer's employment with the Company.

                  n. INTELLECTUAL PROPERTY RIGHTS. The Company and its
Subsidiaries own or possess adequate rights or licenses to use all trademarks,
trade names, service marks, service mark registrations, service names, patents,
patent rights, copyrights, inventions, licenses, approvals, governmental
authorizations, trade secrets and rights necessary to conduct their respective
businesses as now conducted. Except as set forth on SCHEDULE 3(n), none of the
Company's trademarks, trade names, service marks, service mark registrations,
service names, patents, patent rights, copyrights, inventions, licenses,
approvals, government authorizations, trade secrets or other intellectual
property rights necessary to conduct its business as now or as proposed to be
conducted have expired or terminated, or are expected to expire or terminate
within two years from the date of this Agreement. The Company and its
Subsidiaries do not have any knowledge of any infringement by the Company or its
Subsidiaries of trademark, 



<PAGE>   11

trade name rights, patents, patent rights, copyrights, inventions, licenses,
service names, service marks, service mark registrations, trade secret or other
similar rights of others, or of any such development of similar or identical
trade secrets or technical information by others and, except as set forth on
SCHEDULE 3(n), there is no claim, action or proceeding being made or brought
against, or to the Company's knowledge, being threatened against, the Company or
its Subsidiaries regarding trademark, trade name, patents, patent rights,
invention, copyright, license, service names, service marks, service mark
registrations, trade secret or other infringement; and the Company and its
Subsidiaries are unaware of any facts or circumstances which might give rise to
any of the foregoing. The Company and its Subsidiaries have taken reasonable
security measures to protect the secrecy, confidentiality and value of all of
their intellectual properties.

                  o. ENVIRONMENTAL LAWS. The Company and its Subsidiaries (i)
are in compliance with any and all applicable foreign, federal, state and local
laws and regulations relating to the protection of human health and safety, the
environment or hazardous or toxic substances or wastes, pollutants or
contaminants ("ENVIRONMENTAL LAWS"), (ii) have received all permits, licenses or
other approvals required of them under applicable Environmental Laws to conduct
their respective businesses and (iii) are in compliance with all terms and
conditions of any such permit, license or approval where, in each of the three
foregoing cases, the failure to so comply would have, individually or in the
aggregate, a Material Adverse Effect.

                  p. TITLE. The Company and its Subsidiaries have good and
marketable title in fee simple to all real property and good and marketable
title to all personal property owned by them which is material to the business
of the Company and its Subsidiaries, in each case free and clear of all liens,
encumbrances and defects except such as are described in SCHEDULE 3(p) or such
as do not materially affect the value of such property and do not interfere with
the use made and proposed to be made of such property by the Company or any of
its Subsidiaries. Any real property and facilities held under lease by the
Company or any of its Subsidiaries are held by them under valid, subsisting and
enforceable leases with such exceptions as are not material and do not interfere
with the use made and proposed to be made of such property and buildings by the
Company and its Subsidiaries.

                  q. INSURANCE. Neither the Company nor any such Subsidiary has
been refused any insurance coverage sought or applied for and neither the
Company nor any such Subsidiary has any reason to believe that it will not be
able to renew its existing insurance coverage as and when such coverage expires
or to obtain similar coverage from similar insurers as may be necessary to
continue its business at a cost that would not materially and adversely affect
the condition, financial or otherwise, or the earnings, business or operations
of the Company and its Subsidiaries, taken as a whole.

                  r. REGULATORY PERMITS. The Company and its Subsidiaries
possess all certificates, authorizations and permits issued by the appropriate
federal, state or foreign regulatory authorities necessary to conduct their
respective businesses, except where the failure to possess such items would not
have, individually or in the aggregate, a Material Adverse Effect and neither
the Company nor any such Subsidiary has received any notice of proceedings
relating to the revocation or modification of any such certificate,
authorization or 



<PAGE>   12

permit.

                  s. NO MATERIALLY ADVERSE CONTRACTS, ETC. Neither the Company
nor any of its Subsidiaries is subject to any charter, corporate or other legal
restriction, or any judgment, decree, order, rule or regulation which in the
judgment of the Company's officers has a Material Adverse Effect. Neither the
Company nor any of its Subsidiaries is a party to any contract or agreement
which in the reasonable judgment of the Company's officers has or is expected to
have a Material Adverse Effect.

                  t. TAX STATUS. Except as set forth on SCHEDULE 3(t), the
Company and each of its Subsidiaries has made or filed all federal and state
income and all other tax returns, reports and declarations required by any
jurisdiction to which it is subject (unless and only to the extent that the
Company and each of its Subsidiaries has set aside on its books provisions
reasonably adequate for the payment of all unpaid and unreported taxes) and has
paid all taxes and other governmental assessments and charges that are material
in amount, shown or determined to be due on such returns, reports and
declarations, except those being contested in good faith and has set aside on
its books provision reasonably adequate for the payment of all taxes for periods
subsequent to the periods to which such returns, reports or declarations apply.
There are no unpaid taxes in any material amount claimed to be due by the taxing
authority of any jurisdiction, and the officers of the Company know of no basis
for any such claim.

                  u. CERTAIN TRANSACTIONS. Except as set forth on SCHEDULE 3(u)
and in the SEC Documents filed at least ten days prior to the date hereof and
except for arm's length transactions pursuant to which the Company makes
payments in the ordinary course of business upon terms no less favorable than
the Company could obtain from third parties and other than the grant of stock
options disclosed on SCHEDULE 3(c), none of the officers or directors of the
Company is presently a party to any transaction with the Company or any of its
Subsidiaries (other than for services as employees, officers and directors),
including any contract, agreement or other arrangement providing for the
furnishing of services to or by, providing for rental of real or personal
property to or from, or otherwise requiring payments to or from any officer or
director or, to the knowledge of the Company, any corporation, partnership,
trust or other entity in which any officer or director has a substantial
interest or is an officer, director, trustee or partner.

                  v. DILUTIVE EFFECT. The Company understands and acknowledges
that the number of Conversion Shares issuable upon conversion of the Preferred
Shares will increase in certain circumstances. The Company further acknowledges
that, subject to such limitations as are expressly set forth in the Transaction
Documents, its obligation to issue Conversion Shares upon conversion of the
Preferred Shares in accordance with this Agreement and the Certificate of
Designations is absolute and unconditional regardless of the dilutive effect
that such issuance may have on the ownership interests of other stockholders of
the Company.

                  w. SHAREHOLDER RIGHTS PLAN; APPLICATION OF TAKEOVER
PROTECTIONS. The Company and its directors have taken all necessary action, if
any, in order to render inapplicable (i) any shareholder rights plan, "poison
pill" or similar arrangement (a 



<PAGE>   13

"Shareholder Rights Plan") to which it is a party and (ii) any control share
acquisition, business combination, poison pill (including any distribution under
a rights agreement) or other similar anti-takeover provision under the Restated
Articles of Organization of the Company or any anti-takeover laws which are or
could be applicable to any Purchaser as a result of the transactions
contemplated by this Agreement, including, without limitation, the Company's
issuance of the Preferred Shares or the Conversion Shares and any Buyer's
ownership of such shares.

                  x. NO OTHER AGREEMENTS. The Company has not, directly or
indirectly, made any agreements with any Buyers relating to the terms or
conditions of the transactions contemplated by the Transaction Documents except
as set forth in the Transaction Documents.

         4.       COVENANTS.

                  a. BEST EFFORTS. Each party shall use its best efforts timely
to satisfy each of the conditions to be satisfied by it as provided in Sections
6 and 7 of this Agreement.

                  b. FORM D. 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
each Buyer promptly after such filing. The Company shall, on or before each of
the Closing Dates, take such action as the Company shall reasonably determine is
necessary to qualify the Securities for, or obtain exemption for the Securities
for, sale to the Buyers at each of the Closings pursuant to this Agreement under
applicable securities or "Blue Sky" laws of the states of the United States, and
shall provide evidence of any such action so taken to the Buyers on or prior to
the Closing Date. The Company shall make all filings and reports relating the
offer and sale of the Securities required under the applicable securities or
"Blue Sky" laws of the states of the United States following each of the Closing
Dates.

                  c. REPORTING STATUS. Until the earlier of (i) the date which
is one year after the date as of which the Investors (as that term is defined in
the Registration Rights Agreement) may sell all of the Conversion Shares without
restriction pursuant to Rule 144(k) promulgated under the 1933 Act (or successor
thereto), or (ii) the date on which (A) the Investors shall have sold all the
Conversion Shares and (B) none of the Preferred Shares is outstanding (the
"REGISTRATION PERIOD"), the Company shall file all reports required to be filed
with the SEC pursuant to the 1934 Act, and the Company shall not terminate its
status as an issuer required to file reports under the 1934 Act even if the 1934
Act or the rules and regulations thereunder would otherwise permit such
termination.

                  d. USE OF PROCEEDS. The Company will use the proceeds from the
sale of the Preferred Shares for substantially the same purposes and in
substantially the same amounts as indicated in SCHEDULE 4(d).

                  e. FINANCIAL INFORMATION. The Company agrees to send the
following to each Investor (as that term is defined in the Registration Rights
Agreement) during the Registration Period: (i) within five (5) days after the
filing thereof with the SEC, a copy of any Current Reports on Form 8-K; (ii) on
the same day as the release thereof, facsimile copies 



<PAGE>   14

of all press releases issued by the Company or any of its Subsidiaries and (iii)
copies of any notices and other information made available or given to the
stockholders of the Company generally, contemporaneously with the making
available or giving thereof to the stockholders.

                  f. RESERVATION OF SHARES. The Company shall take all action
necessary to at all times have authorized, and reserved for the purpose of
issuance, no less than 200% of the number of shares of Common Stock needed to
provide for the issuance of the Conversion Shares with respect to all
outstanding Preferred Shares.

                  g. INTENTIONALLY OMITTED.

                  h. LISTING. The Company shall promptly secure the listing of
all of the Registrable Securities (as defined in the Registration Rights
Agreement) upon each national securities exchange and automated quotation system
(including the Principal Market), 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
Registrable Securities from time to time issuable under the terms of the
Transaction Documents and the Certificate of Designations. The Company shall
maintain the Common Stock's authorization for quotation on the Principal Market.
Neither the Company nor any of its Subsidiaries shall take any action which
would be reasonably expected to result in the delisting or suspension of the
Common Stock on the Principal Market. The Company shall promptly provide to each
Buyer copies of any notices it receives from the Principal Market regarding the
continued eligibility of the Common Stock for listing on such Principal Market.
The Company shall pay all fees and expenses in connection with satisfying its
obligations under this Section 4(h).

                  i. EXPENSES. Subject to Section 9(l) below, following the
Initial Closing, the Company shall reimburse the Buyers for the Buyers'
reasonable expenses (including attorneys fees and expenses) in connection with
negotiating and preparing the Transaction Documents and consummating the
transactions contemplated thereby up to an aggregate of $30,000.

                  j. PROXY STATEMENT. The Company shall provide each stockholder
entitled to vote at the next meeting of stockholders of the Company, which shall
be not later than 120 days after the Initial Closing Date (the "Stockholder
Meeting Deadline"), a proxy statement, which has been previously reviewed by the
Buyers and a counsel of their choice, soliciting each such stockholder's
affirmative vote at such stockholder meeting for approval of the Company's
issuance of all of the Securities as described in this Agreement and the
increase in the number of the Company's authorized shares of Common Stock to
50,000,000, and the Company shall use its best efforts to solicit its
stockholders' approval of such issuance of the Securities and cause the Board of
Directors of the Company to recommend to the stockholders that they approve such
proposal. If the Company fails to hold a meeting of its stockholders by the
Stockholder Meeting Deadline (unless such failure is the result solely of the
actions of the Buyers), then, as partial relief (which remedy shall not be
exclusive of any other remedies available at law or in equity), the Company
shall pay to each holder of Preferred Shares an amount in cash per Preferred
Share equal to the product of (i) $1,000 multiplied by (ii) .025 



<PAGE>   15

multiplied by (iii) the quotient of (x) the number of days after the Stockholder
Meeting Deadline that a meeting of the Company's stockholders is not held,
divided by (y) 30. The Company shall make the payments referred to in the
immediately preceding sentence within five days of the earlier of (I) the
holding of the meeting of the Company's stockholders, the failure of which
resulted in the requirement to make such payments and (II) the last day of each
30-day period beginning on the day after the Stockholder Meeting Deadline. In
the event the Company fails to make such payments in a timely manner, such
payments shall bear interest at the rate of 1.5% per month (pro rated for
partial months) until paid in full.

                  k. TRANSACTIONS WITH AFFILIATES. So long as (i) any Preferred
Shares are outstanding or (ii) any Buyer owns Conversion Shares with a market
value equal to or greater than $500,000, the Company shall not, and shall cause
each of its Subsidiaries not to, enter into, amend, modify or supplement, or
permit any Subsidiary to enter into, amend, modify or supplement, any agreement,
transaction, commitment or arrangement with any of its or any Subsidiary's
officers, directors, person who were officers or directors at any time during
the previous two years, stockholders who beneficially own 5% or more of the
Common Stock, or affiliates or with any individual related by blood, marriage or
adoption to any such individual or with any entity in which any such entity or
individual owns a 5% or more beneficial interest (each a "RELATED PARTY"),
except for (a) customary employment arrangements and benefit programs on
reasonable terms, (b) any agreement, transaction, commitment or arrangement on
an arms-length basis on terms no less favorable than terms which would have been
obtainable from a person other than such Related Party, or (c) any agreement,
transaction, commitment or arrangement which is approved by a majority of the
disinterested directors of the Company. For purposes hereof, any director who is
also an officer of the Company or any Subsidiary of the Company shall not be a
disinterested director with respect to any such agreement, transaction,
commitment or arrangement. "AFFILIATE" for purposes hereof means, with respect
to any person or entity, another person or entity that, directly or indirectly,
(i) has a 5% or more equity interest in that person or entity, (ii) has 5% or
more common ownership with that person or entity, (iii) controls that person or
entity, or (iv) shares common control with that person or entity. "CONTROL" or
"CONTROLS" for purposes hereof means that a person or entity has the power,
direct or indirect, to conduct or govern the policies of another person or
entity.

                  l. FILING OF FORM 8-K. On or before the second (2nd) business
day following each of the Closing Dates, the Company shall file a Form 8-K with
the SEC describing the terms of the transaction contemplated by the Transaction
Documents and consummated at such Closing, in each case in the form required by
the 1934 Act.

5.       TRANSFER AGENT INSTRUCTIONS.

                  The Company shall issue irrevocable instructions to its
transfer agent, and any subsequent transfer agent, to issue certificates,
registered in the name of each Buyer or its respective nominee(s), for the
Conversion Shares in such amounts as specified from time to 


<PAGE>   16

time by each Buyer to the Company upon conversion of the Preferred Shares (the
"IRREVOCABLE TRANSFER AGENT INSTRUCTIONS"). Prior to registration of the
Conversion Shares under the 1933 Act, all such certificates shall bear the
restrictive legend specified in Section 2(g) of this Agreement. The Company
warrants that no instruction other than the Irrevocable Transfer Agent
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, prior
to registration of the Conversion Shares under the 1933 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 5 shall affect in any way each Buyer's obligations and agreements
set forth in Section 2(g) to comply with all applicable prospectus delivery
requirements, if any, upon resale of the Securities. If a Buyer provides the
Company with an opinion of counsel, in form and substance which is generally
acceptable, that registration of a resale by such Buyer of any of such
Securities is not required under the 1933 Act, the Company shall permit the
transfer, and, in the case of the Conversion Shares, promptly instruct its
transfer agent to issue one or more certificates in such name and in such
denominations as specified by such Buyer and without any restrictive legends.
The Company acknowledges that a breach by it of its obligations hereunder will
cause irreparable harm to the Buyers 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, in the event of a breach or threatened breach by the
Company of the provisions of this Section 5, that the Buyers 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.

                  a.       INITIAL CLOSING DATE. The obligation of the Company
hereunder to issue and sell the Initial Preferred Shares to each Buyer at the
Initial Closing is subject to the satisfaction, at or before the Initial Closing
Date, of each of the following conditions, 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 by providing each Buyer with prior written notice thereof:

                  (i)      Such Buyer shall have executed each of the
         Transaction Documents and delivered the same to the Company.

                  (ii)     The Certificate of Designations shall have been filed
         with the Secretary of State of The Commonwealth of Massachusetts.

                  (iii)    Such Buyer shall have delivered to the Company the
         Purchase Price for the Initial Preferred Shares being purchased by such
         Buyer at the Initial Closing by wire transfer of immediately available
         funds pursuant to the wire instructions provided by the Company.

                  (iv)     The representations and warranties of such Buyer
         shall be true and 


<PAGE>   17

         correct as of the date when made and as of the Initial Closing Date as
         though made at that time (except for representations and warranties
         that speak as of a specific date), and such Buyer shall have performed,
         satisfied and complied with the covenants, agreements and conditions
         required by the Transaction Documents to be performed, satisfied or
         complied with by such Buyer at or prior to the Initial Closing Date.

                  b.       ADDITIONAL CLOSING DATE. The obligation of the
Company hereunder to issue and sell the Additional Preferred Shares to each
Buyer at the Additional Closing is subject to the satisfaction, at or before the
Additional Closing Date, of each of the following conditions, 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 by providing each Buyer with prior
written notice thereof:

                  (i)      Such Buyer shall have delivered to the Company the
         Purchase Price for the Additional Preferred Shares being purchased by
         such Buyer at the Additional Closing by wire transfer of immediately
         available funds pursuant to the wire instructions provided by the
         Company.

                  (ii)     The representations and warranties of such Buyer
         shall be true and correct as of the date when made and as of the
         Additional Closing Date as though made at that time (except for
         representations and warranties that speak as of a specific date), and
         such Buyer shall have performed, satisfied and complied with the
         covenants, agreements and conditions required by the Transaction
         Documents to be performed, satisfied or complied with by such Buyer at
         or prior to the Additional Closing Date.

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

                  a.       INITIAL CLOSING DATE. The obligation of each Buyer 
hereunder to purchase the Initial Preferred Shares at the Initial Closing is
subject to the satisfaction, at or before the Initial Closing Date, of each of
the following conditions, provided that these conditions are for each Buyer's
sole benefit and may be waived by such Buyer at any time in its sole discretion:

                  (i)      The Company shall have executed each of the
         Transaction Documents, and delivered the same to such Buyer.

                  (ii)     The Certificate of Designations shall have been filed
         with the Secretary of State of The Commonwealth of Massachusetts, and a
         copy thereof certified by such Secretary of State shall have been
         delivered to such Buyer.

                  (iii)    The Common Stock shall be authorized for quotation on
         the Principal Market, trading in the Common Stock shall not have been
         suspended by the Principal Market or the SEC, at any time beginning on
         the date hereof and through and including the Initial Closing Date and
         the Company shall not have been notified of any pending or threatened
         proceeding or other action to delist or suspend the Common Stock.


<PAGE>   18

                  (iv)     The representations and warranties of the Company
         shall be true and correct as of the date when made and as of the
         Initial Closing Date 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 with the
         covenants, agreements and conditions required by the Transaction
         Documents to be performed, satisfied or complied with by the Company at
         or prior to the Initial Closing Date. Such Buyer shall have received a
         certificate, executed by the Chief Executive Officer of the Company,
         dated as of the Initial Closing Date, to the foregoing effect and as to
         such other matters as may be reasonably requested by such Buyer
         including, without limitation, an update as of the Initial Closing Date
         regarding the representation contained in Section 3(c) above.

                  (v)      Such Buyer shall have received the opinion of the
         Company's counsel dated as of the Initial Closing Date, in form, scope
         and substance reasonably satisfactory to such Buyer and in
         substantially the form of EXHIBIT C attached hereto.

                  (vi)     The Company shall have executed and delivered to such
         Buyer the Stock Certificates (in such denominations as such Buyer shall
         request) for the Preferred Shares being purchased by such Buyer at the
         Initial Closing.

                  (vii)    The Board of Directors of the Company shall have
         adopted resolutions consistent with Section 3(b)(ii) above and in a
         form reasonably acceptable to such Buyer (the "RESOLUTIONS").

                  (viii)   As of the Initial Closing Date, the Company shall
         have reserved out of its authorized and unissued Common Stock, solely
         for the purpose of effecting the conversion of the Preferred Shares, a
         number of shares of Common Stock equal to at least 200% of the number
         of Conversion Shares issuable upon conversion of the Preferred Shares
         outstanding on the Initial Closing Date (after giving effect to the
         Preferred Shares to be issued on the Initial Closing Date and assuming
         all such Preferred Shares were fully convertible or exercisable on such
         date regardless of any limitation on the timing or amount of such
         conversions or exercises).

                  (ix)     The Irrevocable Transfer Agent Instructions, in the
         form of EXHIBIT D attached hereto, shall have been delivered to and
         acknowledged in writing by the Company's transfer agent.

                  (x)      The Company shall have delivered to such Buyer a
         certificate evidencing the incorporation and good standing of the
         Company and each Subsidiary in such corporation's state of
         incorporation issued by the Secretary of State of such state of
         incorporation as of a date within 10 days of the Initial Closing.

                  (xi)     The Company shall have delivered to such Buyer a
         certified copy of its 


<PAGE>   19

         Articles of Organization as certified by the Secretary of State of The
         Commonwealth of Massachusetts within ten days of the Initial Closing
         Date.

                  (xii)    The Company shall have delivered to such Buyer a
         clerk's certificate, dated as the Initial Closing Date, as to (i) the
         Resolutions, (ii) the Articles of Organization and (iii) the Bylaws,
         each as in effect at the Initial Closing.

                  (xiii)   The Company shall have delivered to such Buyer such
         other documents relating to the transactions contemplated by this
         Agreement as such Buyer or its counsel may reasonably request.

                  b.       ADDITIONAL CLOSING DATE. The obligation of each Buyer
hereunder to purchase the Additional Preferred Shares at the Additional Closing
is subject to the satisfaction, at or before the Additional Closing Date, of
each of the following conditions, provided that these conditions are for each
Buyer's sole benefit and may be waived by such Buyer at any time in its sole
discretion:

                  (i)      Certificate of Designations shall be in full force
         and effect and shall not have been amended since the Initial Closing
         Date, and a copy thereof certified by the Secretary of State of The
         Commonwealth of Massachusetts shall have been delivered to such Buyer.

                  (ii)     The Common Stock shall be authorized for quotation on
         the Principal Market, trading in the Common Stock shall not have been
         suspended by Principal Market or the SEC on or at any time prior to the
         Additional Closing Date and the Company shall not have been notified of
         any pending or threatened proceeding or other action to delist or
         suspend the Common Stock on or prior to the Additional Closing Date.

                  (iii)    The representations and warranties of the Company
         shall be true and correct as of the date when made and as of the
         Additional Closing Date 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 with the
         covenants, agreements and conditions required by the Transaction
         Documents to be performed, satisfied or complied with by the Company at
         or prior to the Additional Closing Date. Such Buyer shall have received
         a certificate, executed by the Chief Executive Officer of the Company,
         dated as of the Additional Closing Date, to the foregoing effect and as
         to such other matters as may be reasonably requested by such Buyer
         including, without limitation, an update as of the Additional Closing
         Date regarding the representation contained in Section 3(c) above.

                  (iv)     Such Buyer shall have received the opinion of the
         Company's counsel dated as of the Additional Closing Date, in form,
         scope and substance reasonably satisfactory to such Buyer and in
         substantially the form of EXHIBIT C attached hereto.

                  (v)      The Company shall have executed and delivered to such
         Buyer the Stock 



<PAGE>   20

         Certificates (in such denominations as such Buyer shall request) for
         the Preferred Shares being purchased by such Buyer at the Additional
         Closing.

                  (vi)     The Board of Directors of the Company shall have
         adopted the Resolutions.

                  (vii)    As of the Additional Closing Date, the Company shall
         have reserved out of its authorized and unissued Common Stock, solely
         for the purpose of effecting the conversion of the Preferred Shares, a
         number of shares of Common Stock equal to at least 200% of the number
         of Conversion Shares issuable upon conversion of the Preferred Shares
         outstanding on the Additional Closing Date (after giving effect to the
         Preferred Shares to be issued on such Additional Closing Date and
         assuming all such outstanding Preferred Shares were fully convertible
         or exercisable on such date regardless on any limitation on the timing
         or amount of such conversions or exercises) which such number of shares
         of Common Stock shall be fully available to be issued as Conversion
         Shares under Rule 4460 of the Nasdaq National Market.

                  (viii)   The Irrevocable Transfer Agent Instructions, in the
         form of EXHIBIT D attached hereto, shall have been delivered to and
         acknowledged in writing by the Company's transfer agent.

                  (ix)     The Company shall have delivered to such Buyer a
         certificate evidencing the incorporation and good standing of the
         Company and each Subsidiary in such corporation's state of
         incorporation issued by the Secretary of State of such state of
         incorporation as of a date within 10 days of the Additional Closing.

                  (x)      The Company shall have delivered to such Buyer a
         certified copy of its Articles of Organization as certified by the
         Secretary of State of The Commonwealth of Massachusetts within ten days
         of the Additional Closing Date.

                  (xi)     The Company shall have delivered to such Buyer a
         clerk's certificate, dated as the Additional Closing Date, as to (i)
         the Resolutions, (ii) the Articles of Organization and (iii) the
         Bylaws, each as in effect at the Additional Closing.

                  (xii)    The conditions to the Additional Closing set forth in
         Section 1(c) shall have been satisfied on or before the Additional
         Closing Date.

                  (xiii)   The Company shall have delivered to such Buyer such
         other documents relating to the transactions contemplated by this
         Agreement as such Buyer or its counsel may reasonably request.

         8.       INDEMNIFICATION. In consideration of each Buyer's execution
and delivery of the Transaction Documents and acquiring the Securities
thereunder and in addition to all of the Company's other obligations under the
Transaction Documents and the Certificate of Designations, the Company shall
defend, protect, indemnify and hold harmless each Buyer and each other holder of
the Securities and all of their stockholders, officers, directors, employees 


<PAGE>   21

and direct or indirect investors and any of the foregoing person's agents or
other representatives (including, without limitation, those retained in
connection with the transactions contemplated by this Agreement) (collectively,
the "INDEMNITEES") from and against any and all actions, causes of action,
suits, claims, losses, costs, penalties, fees, liabilities and damages, and
expenses in connection therewith (irrespective of whether any such Indemnitee is
a party to the action for which indemnification hereunder is sought), and
including reasonable attorneys' fees and disbursements (the "INDEMNIFIED
LIABILITIES"), incurred by any Indemnitee as a result of, or arising out of, or
relating to (a) any misrepresentation or breach of any representation or
warranty made by the Company in the Transaction Documents or the Certificate of
Designations or any other certificate, instrument or document contemplated
hereby or thereby, (b) any breach of any covenant, agreement or obligation of
the Company contained in the Transaction Documents or the Certificate of
Designations or any other certificate, instrument or document contemplated
hereby or thereby, or (c) any cause of action, suit or claim brought or made
against such Indemnitee and arising out of or resulting from the execution,
delivery, performance or enforcement of the Transaction Documents or the
Certificate of Designations or any other certificate, instrument or document
contemplated hereby or thereby, (d) any transaction financed or to be financed
in whole or in part, directly or indirectly, with the proceeds of the issuance
of the Securities or (e) the status of such Buyer or holder of the Securities as
an investor in the Company. To the extent that the foregoing undertaking by the
Company may be unenforceable for any reason, the Company shall make the maximum
contribution to the payment and satisfaction of each of the Indemnified
Liabilities which is permissible under applicable law. Notwithstanding the
foregoing, if a Buyer breaches its obligations under Section 4(d) of the
Registration Rights Agreement to refrain from disposing of Registrable
Securities pursuant to the Registration Statement under the circumstances
described in Section 4(d) of the Registration Rights Agreement, then such Buyer
shall not be entitled to indemnification under clause (c) or (e) above with
respect to actions, suits or claims made against such Buyer which are based on
such breach.

         9.       GOVERNING LAW; MISCELLANEOUS.

                  a. GOVERNING LAW. The corporate laws of The Commonwealth of
Massachusetts shall govern all issues concerning the relative rights of the
Company and its stockholders. All other questions concerning the construction,
validity, enforcement and interpretation of this Agreement shall be governed by
the internal laws of the State of New York, without giving effect to any choice
of law or conflict of law provision or rule (whether of the State of New York or
any other jurisdictions) that would cause the application of the laws of any
jurisdictions other than the State of New York. Each party hereby irrevocably
submits to the non-exclusive jurisdiction of the state and federal courts
sitting the City of New York, borough of Manhattan, for the adjudication of any
dispute hereunder or in connection herewith or with any transaction contemplated
hereby or discussed herein, and hereby irrevocably waives, and agrees not to
assert in any suit, action or 



<PAGE>   22

proceeding, any claim that it is not personally subject to the jurisdiction of
any such court, that such suit, action or proceeding is brought in an
inconvenient forum or that the venue of such suit, action or proceeding is
improper. Each party hereby irrevocably waives personal service of process and
consents to process being served in any such suit, action or proceeding by
mailing a copy thereof to such party at the address for such notices to it under
this Agreement and agrees that such service shall constitute good and sufficient
service of process and notice thereof. Nothing contained herein shall be deemed
to limit in any way any right to serve process in any manner permitted by law.
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 in that jurisdiction or the
validity or enforceability of any provision of this Agreement in any other
jurisdiction.

                  b. COUNTERPARTS. This Agreement may be executed in two or more
identical 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; provided that a facsimile signature
shall be considered due execution and shall be binding upon the signatory
thereto with the same force and effect as if the signature were an original, not
a facsimile signature.

                  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 in that jurisdiction or the validity or
enforceability of any provision of this Agreement in any other jurisdiction.

                  e. ENTIRE AGREEMENT; AMENDMENTS. This Agreement supersedes all
other prior oral or written agreements between the Buyers, the Company, their
affiliates and persons acting on their behalf with respect to the matters
discussed herein, and 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 any Buyer makes any representation, warranty,
covenant or undertaking with respect to such matters. No provision of this
Agreement may be amended other than by an instrument in writing signed by the
Company and the holders of at least two-thirds (2/3) of the Preferred Shares
then outstanding, and no provision hereof may be waived other than by an
instrument in writing signed by the party against whom enforcement is sought. No
such amendment shall be effective to the extent that it applies to less than all
of the holders of the Preferred Shares then outstanding. No consideration shall
be offered or paid to any person to amend or consent to a waiver or modification
of any provision of any of the Transaction Documents or the Certificates of
Designations unless the same consideration also is offered to all of the parties
to the Transaction Documents or holders of Preferred Shares, as the case may be.

                  f. NOTICES. Any notices consents, waivers or other
communications required or permitted to be given under the terms of this
Agreement must be in writing and will be deemed to have been delivered (i) upon
receipt, when delivered personally; (ii) upon 


<PAGE>   23

receipt, when sent by facsimile (provided confirmation of transmission is
mechanically generated and kept on file by the sending party); (iii) one (1) day
after deposit with a nationally recognized overnight delivery service, in each
case properly addressed to the party to receive the same. The addresses and
facsimile numbers for such communications shall be:

                  If to the Company:

                           Alpha-Beta Technology, Inc.
                           One Innovation Drive
                           Worcester, Massachusetts 01605
                           Telephone: 508-798-6900
                           Facsimile: 508-799-7968
                           Attention: Joseph M. Grimm

                  With a copy to:

                           Company Counsel
                           Goodwin, Procter & Hoar LLP
                           Exchange Place
                           Boston, Massachusetts 02109
                           Telephone: 617-570-1000
                           Facsimile: 617-523-1231
                           Attention: John J. Egan III, Esq.

         If to the Transfer Agent:

                           Boston EquiServe
                           Shareholder Services Division
                           150 Royall Street
                           Canton, Massachusetts 02021
                           Telephone: 781-575-2000
                           Facsimile: 781-575-2549
                           Attention: Therese Collins

         If to a Buyer, to its address and facsimile number on the Schedule of
Buyers, with copies to such Buyer's representatives as set forth on the Schedule
of Buyers.

         Each party shall provide five (5) days' prior written notice to the
other party of any change in address or facsimile number.

                  g.       SUCCESSORS AND ASSIGNS. This Agreement shall be
binding upon and inure to the benefit of the parties and their respective
successors and assigns, including any purchasers of the Preferred Shares. Until
the Company fully satisfies its obligations, if any, under Sections 2(d)(i) and
3 of the Certificate of Designations, the Company shall not assign this
Agreement or any rights or obligations hereunder without the prior written
consent of the holders of two-thirds (2/3) of the Preferred Shares then
outstanding including by merger or 


<PAGE>   24

consolidation. A Buyer may assign some or all of its rights hereunder to
affiliates or associates of such Buyer, without the consent of the Company, and
to others, with the consent of the Company; provided, however, that any such
assignment shall not release such Buyer from its obligations hereunder unless
such obligations are assumed by such assignee and the Company has consented to
such assignment and assumption. Notwithstanding anything to the contrary
contained in the Transaction Documents, Buyer shall be entitled to pledge the
Securities in connection with a bona fide margin account.

                  h. NO 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.

                  i. SURVIVAL. Unless this Agreement is terminated under Section
9(l), the representations and warranties of the Company and the Buyers contained
in Sections 2 and 3, the agreements and covenants set forth in Sections 4, 5 and
9, and the indemnification provisions set forth in Section 8, shall survive each
of the Closings. Each Buyer shall be responsible only for its own
representations, warranties, agreements and covenants hereunder.

                  j. PUBLICITY. The Company and each Buyer shall have the right
to approve before issuance any press releases 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 any Buyer, to make
any press release or other public disclosure with respect to such transactions
as is required by applicable law and regulations (although each Buyer shall be
consulted by the Company in connection with any such press release or other
public disclosure 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 Initial Closing shall
not have occurred with respect to a Buyer on or before three (3) business days
from the date hereof due to the Company's or such Buyer's failure to satisfy the
conditions set forth in Sections 6 and 7 above (and the nonbreaching party's
failure to waive such unsatisfied condition(s)), the nonbreaching party shall
have the option to terminate this Agreement with respect to such breaching party
at the close of business on such date without liability of any party to any
other party; provided, however, that if this Agreement is terminated pursuant to
this Section 9(l), the Company shall remain obligated to reimburse the
non-breaching Buyers for the expenses described in Section 4(i) above.

                  m. PLACEMENT AGENT. The Company acknowledges that it has
engaged 


<PAGE>   25

World Capital Funding, LLC as placement agent in connection with the sale of the
Preferred Shares. The Company shall be responsible for the payment of any
placement agent's fees or broker's commissions relating to or arising out of the
purchase of the Securities by the Buyers. The Company shall pay, and hold each
Buyer harmless against, any liability, loss or expense (including, without
limitation, attorneys' fees and out-of-pocket expenses) arising in connection
with any such claim.

                  n. NO STRICT CONSTRUCTION. The language used in this Agreement
will be deemed to be the language chosen by the parties to express their mutual
intent, and no rules of strict construction will be applied against any party.

                  o. REMEDIES. Each Buyer and each holder of Preferred Shares,
Conversion Shares shall have all rights and remedies set forth in this
Agreement, the Certificate of Designation and all rights and remedies which such
holders have been granted at any time under any other agreement or contract and
all of the rights which such holders have under any law. Any Person having any
rights under any provision of this Agreement shall be entitled to enforce such
rights specifically (without posting a bond or other security), to recover
damages by reason of any breach of any provision of this Agreement and to
exercise all other rights granted by law.

                  p. PAYMENT SET ASIDE. To the extent that the Company makes a
payment or payments to the Buyers hereunder or pursuant to the Certificate of
Designations or the Buyers enforce or exercise their rights hereunder or
thereunder, and such payment or payments or the proceeds of such enforcement or
exercise or any part thereof are subsequently invalidated, declared to be
fraudulent or preferential, set aside, recovered from, disgorged by or are
required to be refunded, repaid or otherwise restored to the Company, a trustee,
receiver or any other Person under any law (including, without limitation, any
bankruptcy law, state or federal law, common law or equitable cause of action),
then to the extent of any such restoration the obligation or part thereof
originally intended to be satisfied shall be revived and continued in full force
and effect as if such payment had not been made or such enforcement or setoff
had not occurred.


                                   * * * * * *




<PAGE>   26



         IN WITNESS WHEREOF, the parties have caused this Securities Purchase
Agreement to be duly executed as of day and year first above written.


COMPANY:                                  BUYERS:
- --------                                  -------

ALPHA-BETA TECHNOLOGY, INC.               HFTP INVESTMENTS LLC
                                          By: Promethean Investment Group L.L.C.
                                          Its: Investment Manager


By: /s/ Joseph M. Grimm                   By: /s/ James F. O'Brien, Jr.
    --------------------------------          ----------------------------------
Name: Joseph M. Grimm                     Name: James F. O'Brien, Jr.
Its: Chief Financial Officer              Its:  President




<PAGE>   27



                               SCHEDULE OF BUYERS



<TABLE>
<CAPTION>
                                                                      NUMBER OF
                                                                      INITIAL/
                                                                      DDITIONAL
                                       INVESTOR ADDRESS               PREFERRED     INVESTOR'S REPRESENTATIVES' ADDRESS
   INVESTOR NAME                     AND FACSIMILE NUMBER              A SHARES             AND FACSIMILE NUMBER
- --------------------        ---------------------------------------   ---------     -----------------------------------
<S>                         <C>                                       <C>           <C>
HFTP INVESTMENTS LLC        c/o Promethean Investment Group, L.L.C.   1500/1500     Promethean Investment Group, L.L.C.
                            40 West 57th Street, Suite 1520                         40 West 57th Street, Suite 1520
                            New York, New York 10019                                New York, New York 10019
                            Attn: James F. O'Brien, Jr.                             Attn: James F. O'Brien, Jr.
                            Facsimile: 212-698-0505                                 Facsimile: 212-698-0505

                            Residence: New York                                     Katten Muchin & Zavis
                                                                                    525 West Monroe, Suite 1600
                                                                                    Chicago, Illinois  60661-3693
                                                                                    Attn: Robert J. Brantman, Esq.
                                                                                    Facsimile: 312-902-1061
</TABLE>



<PAGE>   28



LIST OF SCHEDULES
- -----------------

SCHEDULE OF BUYERS
SCHEDULE 3(a)                    Subsidiaries
SCHEDULE 3(c)                    Capitalization
SCHEDULE 3(e)                    Conflicts
SCHEDULE 3(g)                    Material Changes
SCHEDULE 3(h)                    Litigation
SCHEDULE 3(n)                    Intellectual Property
SCHEDULE 3(p)                    Liens
SCHEDULE 3(t)                    Tax Status
SCHEDULE 3(u)                    Certain Transactions
SCHEDULE 4(d)                    Use of Proceeds

LIST OF EXHIBITS
- ----------------

EXHIBIT A                        Form of Certificate of Designations
EXHIBIT B                        Form of Registration Rights Agreement
EXHIBIT C                        Form of Company Counsel Opinion
EXHIBIT D                        Form of Irrevocable Transfer Agent Instructions


<PAGE>   1
                                                                     EXHIBIT 4.2


                          REGISTRATION RIGHTS AGREEMENT

         REGISTRATION RIGHTS AGREEMENT (this "AGREEMENT"), dated as of
October 21, 1998, by and among Alpha-Beta Technology, Inc., a Massachusetts
corporation, with headquarters located at One Innovation Drive, Worcester,
Massachusetts 01605 (the "COMPANY"), and the undersigned buyers (each, a "BUYER"
and collectively, the "BUYERS").

         WHEREAS:

         A.       In connection with the Securities Purchase Agreement by and
among the parties hereto of even date herewith (the "SECURITIES PURCHASE
AGREEMENT"), the Company has agreed, upon the terms and subject to the
conditions of the Securities Purchase Agreement, (i) to issue and sell to the
Buyers shares of the Company's Series F Convertible Preferred Stock (the
"INITIAL PREFERRED SHARES"), which will be convertible into shares of the
Company's common stock, $0.01 par value per share (the "COMMON STOCK") in
accordance with the terms of the Company's Certificate of Designations,
Preferences and Rights of the Series F Preferred Stock (the "CERTIFICATE OF
DESIGNATIONS");

         B.       In connection with the Securities Purchase Agreement, each
Buyer may have the right, upon the terms and subject to the conditions of the
Securities Purchase Agreement, to (i) require the Company to issue and sell
shares of the Company's Series F Convertible Preferred Stock (the "ADDITIONAL
PREFERRED SHARES"), which will be convertible into Common Stock in accordance
with the Certificate of Designations (the Initial Preferred Shares and the
Additional Preferred Shares are collectively referred to as the "PREFERRED
SHARES" and as converted, the "CONVERSION SHARES"); and

         C.       To induce the Buyers 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
"1933 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
Buyers hereby agree as follows:

         1.       DEFINITIONS.

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

                  a. "INVESTOR" means a Buyer, any transferee or assignee
thereof to whom a Buyer assigns its rights under this Agreement and who agrees
to become bound by the provisions of this Agreement in accordance with Section 9
and any transferee or assignee


<PAGE>   2

thereof to whom a transferee or assignee assigns its rights under this Agreement
and who agrees to become bound by the provisions of this Agreement in accordance
with Section 9.

                  b. "PERSON" means a corporation, a limited liability company,
an association, a partnership, an organization, a business, an individual, a
governmental or political subdivision thereof or a governmental agency.

                  c. "REGISTER," "REGISTERED," and "REGISTRATION" refer to a
registration effected by preparing and filing one or more Registration
Statements (as defined below) in compliance with the 1933 Act and pursuant to
Rule 415 under the 1933 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(s) by the United States
Securities and Exchange Commission (the "SEC").

                  d. "REGISTRABLE SECURITIES" means (i) the Conversion Shares
issued or issuable upon conversion of the Preferred Shares, respectively, (ii)
any shares of capital stock issued or issuable with respect to either the
Conversion Shares or the Preferred Shares as a result of any stock split, stock
dividend, recapitalization, exchange or similar event or otherwise, without
regard to any limitation on conversions of Preferred Shares and (ii) the shares
of Common Stock issued to, or issuable upon conversion of warrants to purchase
Common Stock issued to, World Capital Funding, L.L.C. and Reedland Capital
Partners in connection with the sale of the Preferred Shares.

                  e. "REGISTRATION STATEMENT" means a registration statement or
registration statements of the Company filed under the 1933 Act.

         2.       REGISTRATION.

                  a. MANDATORY REGISTRATION. The Company shall prepare, and, as
soon as practicable, but in no event later than 30 days after the Initial
Closing Date (as defined in the Securities Purchase Agreement), file with the
SEC a Registration Statement or Registration Statements (as is necessary) on
Form S-3 covering only the resale of all of the Registrable Securities issuable
pursuant to the Preferred Shares (provided, however, that if the SEC will not
permit registration of the Registrable Securities issuable pursuant to the
Additional Preferred Shares, such shares shall not be required to be registered
under the Registration Statement and shall not be deemed to be Registrable
Securities). In the event that Form S-3 is unavailable for such a registration,
the Company shall use such other form as is available for such a registration,
subject to the provisions of Section 2(e). The initial Registration Statement
prepared pursuant hereto shall register for resale at least that number of
shares of Common Stock equal to the product of (x) 2.0 and (y) the number of
Registrable Securities as of the date immediately preceding the date the
Registration Statement is initially filed with the SEC, subject to adjustment as
provided in Section 3(b). The Company shall use its best efforts to have the
Registration Statement declared effective by the SEC as soon as practicable, but
in no event later than 90 days after the Initial Closing Date.

                  b. PIGGY-BACK REGISTRATIONS. If at any time prior to the
expiration of the 


<PAGE>   3

Registration Period (as hereinafter defined) the number of shares of Common
Stock available for sale under the Registration Statement is insufficient to
cover all of the Registrable Securities and the Company proposes to file with
the SEC a Registration Statement relating to an offering for its own account or
the account of others under the 1933 Act of any of its securities (other than on
Form S-4 or Form S-8 (or their equivalents at such time) relating to 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 promptly send to each Investor written notice
of the Company's intention to file a Registration Statement and of such
Investor's rights under this Section 2(b) and, if within twenty (20) days after
receipt 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, subject to the priorities
set forth in this Section 2(b) below. No right to registration of Registrable
Securities under this Section 2(b) shall be construed to limit any registration
required under Section 2(a). The obligations of the Company under this Section
2(b) may be waived by Investors holding a majority of the Registrable
Securities. If an offering in connection with which an Investor is entitled to
registration under this Section 2(b) is an underwritten offering, then each
Investor whose Registrable Securities are included in such Registration
Statement shall, unless otherwise agreed to 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. If a registration pursuant to this Section 2(b) is to be an
underwritten public offering and the managing underwriter(s) advise the Company
in writing, that in their reasonable good faith opinion, marketing or other
factors dictate that a limitation on the number of shares of Common Stock which
may be included in the Registration Statement is necessary to facilitate and not
adversely affect the proposed offering, then the Company shall include in such
registration: (1) first, all securities the Company proposes to sell for its own
account, (2) second, up to the full number of securities proposed to be
registered for the account of the holders of securities entitled to inclusion of
their securities in the Registration Statement by reason of demand registration
rights, and (3) third, the securities requested to be registered by the
Investors and other holders of securities entitled to participate in the
registration, as of the date hereof, drawn from them pro rata based on the
number each has requested to be included in such registration.

                  c. ALLOCATION OF REGISTRABLE SECURITIES. The initial number of
Registrable Securities included in any Registration Statement and each increase
in the number of Registrable Securities included therein shall be allocated pro
rata among the Investors based on the number of Registrable Securities held by
each Investor at the time the Registration Statement covering such initial
number of Registrable Securities or increase thereof is declared effective by
the SEC. In the event that an Investor sells or otherwise transfers any of such
Person's Registrable Securities, each transferee shall be allocated a pro rata
portion of the then remaining number of Registrable Securities included in such
Registration Statement for such transferor. Any shares of Common Stock included
in a Registration Statement and which remain allocated to any Person which
ceases to hold any Registrable Securities shall be allocated to the remaining
Investors, pro rata based on the number of Registrable Securities then held by
such Investors.





<PAGE>   4



                  d. LEGAL COUNSEL. Subject to Section 5 hereof, the Buyers
holding a majority of the Registrable Securities shall have the right to select
one legal counsel to review and oversee any offering pursuant to this Section 2
("LEGAL COUNSEL"), which shall be Katten Muchin & Zavis or such other counsel as
thereafter designated by the holders of a majority of Registrable Securities.
The Company shall reasonably cooperate with Legal Counsel in performing the
Company's obligations under this Agreement.

                  e. INELIGIBILITY FOR FORM S-3. In the event that Form S-3 is
not available for any registration of Registrable Securities hereunder, the
Company shall (i) register the sale of the Registrable Securities on another
appropriate form and (ii) undertake to register the Registrable Securities on
Form S-3 as soon as such form is available, provided that the Company shall
maintain the effectiveness of the Registration Statement then in effect until
such time as a Registration Statement on Form S-3 covering the Registrable
Securities has been declared effective by the SEC.

                  f. INTENTIONALLY OMITTED.

                  g. SUFFICIENT NUMBER OF SHARES REGISTERED. In the event the
number of shares available under a Registration Statement filed pursuant to
Section 2(a) is insufficient to cover all of the Registrable Securities which
such Registration Statement is required to cover or an Investor's allocated
portion of the Registrable Securities pursuant to Section 2(c), 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 at
least 200% of such Registrable Securities (based on the market price of the
Common Stock), in each case, as soon as practicable, but in any event not later
than fifteen (15) days after the necessity therefor arises. The Company shall
use it best efforts to cause such amendment and/or new Registration Statement to
become effective as soon as practicable following the filing thereof. For
purposes of the foregoing provision, the number of shares available under a
Registration Statement shall be deemed "insufficient to cover all of the
Registrable Securities" if at any time the number of Registrable Securities
issued or issuable upon conversion of the Preferred Shares covered by such
Registration Statement is greater than the quotient determined by dividing (i)
the number of shares of Common Stock available for resale under such
Registration Statement by (ii) 1.5. For purposes of the calculation set forth in
the foregoing sentence, any restrictions on the convertibility of the Preferred
Shares shall be disregarded and such calculation shall assume that the Preferred
Shares are then convertible and exercisable, respectively, into shares of Common
Stock at the then prevailing Conversion Rate (as defined in the Company's
Certificate of Designations)).

                  h. EFFECT OF FAILURE TO OBTAIN AND MAINTAIN EFFECTIVENESS OF
REGISTRATION STATEMENT. If the Registration Statement covering the resale of all
of the shares of Common Stock issuable upon conversion of the Preferred Shares
covered by such Registration Statement and required to be filed by the Company
pursuant to this Agreement is not (i) filed within 30 days of the Initial
Closing Date (the "SCHEDULED FILING DATE"), (ii) declared effective by the SEC
on or before the date which is 90 days after the Initial Closing Date (the
"SCHEDULED EFFECTIVE DATE"), or (iii) if after the Registration Statement has
been declared effective by the 



<PAGE>   5

SEC, sales of all such shares of Common Stock cannot be made pursuant to the
Registration Statement (whether because of a failure to keep the Registration
Statement effective, to disclose such information as is necessary for sales to
be made pursuant to the Registration Statement, to register sufficient shares of
Common Stock or otherwise), then, as partial relief for the damages to any
holder by reason of any such delay in or reduction of its ability to sell the
underlying shares of Common Stock (which remedy shall not be exclusive of any
other remedies available at law or in equity), the Company shall pay to each
holder of Preferred Shares an amount in cash per Preferred Share held (which
relates to a Registration Statement which was not declared effective on or
before its Scheduled Effective Date or pursuant to which sales cannot be made)
equal to the product of (i) $1,000 multiplied by (ii) the sum of (A) .015, if
the Registration Statement is not filed by the Scheduled Filing Date, plus (B)
 .015, if the Registration Statement is not declared effective by the Scheduled
Effective Date, plus (C) the product of (I) .0005 multiplied by (II) the sum of
(x) the number of days after the Scheduled Filing Date that such Registration
Statement is not filed with the SEC, plus (y) the number of days after the
Scheduled Effective Date that the Registration Statement is not declared
effective by the SEC, plus (z) the number of days that sales cannot be made
pursuant to the Registration Statement after the Registration Statement has been
declared effective by the SEC. The payments to which a holder shall be entitled
pursuant to this Section 2(h) are referred to herein as "REGISTRATION DELAY
PAYMENTS." Registration Delay Payments shall be paid within five business days
of the date incurred. In the event the Company fails to make Registration Delay
Payments in a timely manner, such Registration Delay Payments shall bear
interest at the rate of 1.5% per month (prorated for partial months) until paid
in full. If the Company fails to pay the Registration Delay Payments, including
any interest thereon, within 15 business days of the date incurred, then the
holder entitled to such payments shall have the right at any time, so long as
the Company continues to fail to make such payments, to require the Company,
upon written notice, to immediately issue, in lieu of the Registration Delay
Payments, including any interest thereon, the number of shares of Common Stock
equal to the quotient of (X) the sum of the Registration Delay Payments and all
interest accrued thereon divided by (Y) the Conversion Price in effect on such
Conversion Date as is specified by the holder in writing to the Company.

         3.       RELATED OBLIGATIONS.

         Whenever an Investor has requested that any Registrable Securities be
registered pursuant to Section 2(b) or at such time as the Company is obligated
to file a Registration Statement with the SEC pursuant to Section 2(a) or 2(g),
the Company will use its best efforts to effect the registration of the
Registrable Securities in accordance with the intended method of disposition
thereof and, pursuant thereto, the Company shall have the following obligations:

                  a. The Company shall promptly prepare and file with the SEC a
Registration Statement with respect to the Registrable Securities (on or prior
to the thirtieth (30th) day after the Initial Closing Date) for the registration
of Registrable Securities pursuant to Section 2(a) and use its best efforts to
cause such Registration Statements relating to the 

<PAGE>   6

Registrable Securities to become effective as soon as possible after such filing
(but, in no event later than 90 days after the Initial Closing Date), and keep
such Registration Statement effective pursuant to Rule 415 at all times until
the earlier of (i) the date as of which the Investors may sell all of the
Registrable Securities covered by such Registration Statement without
restriction pursuant to Rule 144(k) promulgated under the 1933 Act (or successor
thereto) or (ii) the date on which (A) the Investors shall have sold all the
Registrable Securities covered by such Registration Statement and (B) none of
the Preferred Shares are outstanding (the "REGISTRATION PERIOD"), which
Registration Statement (including any amendments or supplements thereto and
prospectuses contained 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, in light of the circumstances in which
they were made, not misleading. The term "best efforts" shall mean, among other
things, that the Company shall submit to the SEC, within three business days
after the Company learns that no review of a particular Registration Statement
will be made by the staff of the SEC or that the staff has no further comments
on the Registration Statement, as the case may be, a request for acceleration of
effectiveness of such Registration Statement to a time and date not later than
48 hours after the submission of such request.

                  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 such
Registration Statement, which prospectus is to be filed pursuant to Rule 424
promulgated under the 1933 Act, as may be necessary to keep such Registration
Statement effective at all times during the Registration Period, and, during
such period, comply with the provisions of the 1933 Act with respect to the
disposition of all Registrable Securities of the Company covered by such
Registration Statement until such time as all of such Registrable Securities
shall have been disposed of in accordance with the intended methods of
disposition by the seller or sellers thereof as set forth in such Registration
Statement. In the case of amendments and supplements to a Registration Statement
which are required to be filed pursuant to this Agreement (including pursuant to
this Section 3(b)) by reason of the Company filing a report on Form 10-K, Form
10-Q or Form 8-K or any analogous report under the Securities Exchange Act of
1934, as amended (the "1934 ACT"), the Company shall file such amendments or
supplements with the SEC on the same day on which the 1934 Act report is filed
which created the requirement for the Company to amend or supplement the
Registration Statement.

                  c. The Company shall (a) permit Legal Counsel to review and
comment upon (i) the Registration Statement at least seven (7) days prior to its
filing with the SEC and (ii) all other Registration Statements and all
amendments and supplements to all Registration Statements within a reasonable
number of days prior to the their filing with the SEC and (b) not file any
document in a form to which Legal Counsel reasonably objects. The Company shall
not submit a request for acceleration of the effectiveness of a Registration
Statement or any amendment or supplement thereto without the prior approval of
Legal Counsel, which consent shall not be unreasonably withheld. The Company
shall furnish to Legal Counsel, without charge, (i) any correspondence from the
SEC or the staff of the SEC to the Company or its representatives relating to
any Registration Statement, (ii) promptly after the same is prepared and filed
with the SEC, one copy of any Registration Statement and any 


<PAGE>   7

amendment(s) thereto, including financial statements and schedules and (iii)
upon the effectiveness of any Registration Statement, one copy of the prospectus
included in such Registration Statement and all amendments and supplements
thereto.

                  d. The Company shall furnish to each Investor whose
Registrable Securities are included in any Registration Statement, without
charge, (i) promptly after the same is prepared and filed with the SEC, at least
one copy of such Registration Statement and any amendment(s) thereto, including
financial statements and schedules and each preliminary prospectus, (ii) upon
the effectiveness of any Registration Statement, ten (10) copies of the
prospectus included in such Registration Statement and all amendments and
supplements thereto (or such other number of copies as such Investor may
reasonably request) and (iii) such other documents, including copies of any
preliminary or final prospectus, as such Investor may reasonably request from
time to time in order to facilitate the disposition of the Registrable
Securities owned by such Investor.

                  e. The Company shall use reasonable efforts to (i) register
and qualify the Registrable Securities covered by a Registration Statement under
such other securities or "blue sky" laws of such jurisdictions in the United
States as Legal Counsel or any Investor 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 (x) qualify to do business in any jurisdiction where it would not
otherwise be required to qualify but for this Section 3(e), (y) subject itself
to general taxation in any such jurisdiction, or (z) file a general consent to
service of process in any such jurisdiction. The Company shall promptly notify
Legal Counsel and each Investor who holds Registrable Securities of the receipt
by the Company of any notification with respect to the suspension of the
registration or qualification of any of the Registrable Securities for sale
under the securities or "blue sky" laws of any jurisdiction in the United States
or its receipt of actual notice of the initiation or threatening of any
proceeding for such purpose.

                  f. Intentionally Omitted.

                  g. As promptly as practicable after becoming aware of such
event, the Company shall notify Legal Counsel and each Investor in writing of
the happening of any event as a result of which the prospectus included in a
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, in light of the circumstances under
which they were made, not misleading, and promptly prepare a supplement or
amendment to such Registration Statement to correct such untrue statement or
omission, and 


<PAGE>   8

deliver ten (10) copies of such supplement or amendment to Legal Counsel and
each Investor (or such other number of copies as Legal Counsel or such Investor
may reasonably request). The Company shall also promptly notify Legal Counsel
and each Investor in writing (i) when a prospectus or any prospectus supplement
or post-effective amendment has been filed, and when a Registration Statement or
any post-effective amendment has become effective (notification of such
effectiveness shall be delivered to Legal Counsel and each Investor by facsimile
on the same day of such effectiveness and by overnight mail), (ii) of any
request by the SEC for amendments or supplements to a Registration Statement or
related prospectus or related information, and (iii) of the Company's reasonable
determination that a post-effective amendment to a Registration Statement would
be appropriate.

                  h. The Company shall use its best efforts to prevent the
issuance of any stop order or other suspension of effectiveness of a
Registration Statement, or the suspension of the qualification of any of the
Registrable Securities for sale in any jurisdiction and, if such an order or
suspension is issued, to obtain the withdrawal of such order or suspension at
the earliest possible moment and to notify Legal Counsel and each Investor who
holds Registrable Securities being sold of the issuance of such order and the
resolution thereof or its receipt of actual notice of the initiation or threat
of any proceeding for such purpose.

                  i. At the request of any Investor, the Company shall furnish
to such Investor, on the date of the effectiveness of the Registration Statement
and thereafter from time to time on such dates as an Investor may reasonably
request (i) 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
and (ii) an opinion, dated as of such date, of counsel representing the Company
for purposes of such Registration Statement, in form, scope and substance as is
customarily given in an underwritten public offering, addressed to the
underwriters and the Investors.

                  j. The Company shall make available for inspection by (i) any
Investor, (ii) Legal Counsel and (iii) one firm of accountants or other agents
retained by the Investors (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, and cause the Company's officers, directors and
employees to supply all information which any Inspector may reasonably request;
provided, however, that each Inspector shall first agree in writing to hold in
strict confidence and shall not make any disclosure (except to an Investor) or
use 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 or is otherwise
required under the 1933 Act, (b) the release of such Records is ordered pursuant
to a final, non-appealable subpoena or 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 of which the Inspector has knowledge. 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 


<PAGE>   9

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.

                  k. 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 final,
non-appealable order from a court or governmental body of competent
jurisdiction, or (iv) such information has been made generally available to the
public other than by disclosure in violation of this Agreement or any other
agreement. 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
written notice to such Investor and allow such Investor, at the Investor's
expense, to undertake appropriate action to prevent disclosure of, or to obtain
a protective order for, such information.

                  l. The Company shall use its best efforts either to (i) cause
all the Registrable Securities covered by a Registration Statement to be listed
on each 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, (ii)
secure the designation and quotation of all the Registrable Securities covered
by the Registration Statement on the Nasdaq National Market, or (iii) secure the
inclusion for quotation on the over-the-counter market on the electronic
bulletin board for such Registrable Securities and, without limiting the
generality of the foregoing, to arrange for at least two market makers to
register with the National Association of Securities Dealers, Inc. ("NASD") as
such with respect to such Registrable Securities. The Company shall pay all fees
and expenses in connection with satisfying its obligation under this Section
3(l).

                  m. The Company shall cooperate with the Investors who hold
Registrable Securities being offered to facilitate the timely preparation and
delivery of certificates (not bearing any restrictive legend) representing the
Registrable Securities to be offered pursuant to a Registration Statement and
enable such certificates to be in such denominations or amounts, as the case may
be, as the Investors may reasonably request and registered in such names as the
Investors may request.

                  n. The Company shall provide a transfer agent and registrar of
all such Registrable Securities not later than the effective date of such
Registration Statement.

                  o. If requested an Investor, the Company shall (i) immediately
incorporate in a prospectus supplement or post-effective amendment such
information as the Investors agree should be included therein relating to the
sale and distribution of Registrable Securities, including, without limitation,
information with respect to the number of Registrable Securities being sold to
such underwriters, the purchase price being paid therefor by such underwriters
and any other terms of the underwritten (or best efforts underwritten) offering
of the 


<PAGE>   10

Registrable Securities to be sold in such offering; (ii) make all required
filings of such prospectus supplement or post-effective amendment as soon as
notified of the matters to be incorporated in such prospectus supplement or
post-effective amendment; and (iii) supplement or make amendments to any
Registration Statement if requested by a holder of such Registrable Securities.

                  p. The Company shall use its best efforts to cause the
Registrable Securities covered by the applicable Registration Statement to be
registered with or approved by such other governmental agencies or authorities
as may be necessary to consummate the disposition of such Registrable
Securities.

                  q. The Company shall make generally available to its security
holders as soon as practical, but not later than 90 days after the close of the
period covered thereby, an earnings statement (in form complying with the
provisions of Rule 158 under the 1933 Act) 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.

                  r. The Company shall otherwise use its best efforts to comply
with all applicable rules and regulations of the SEC in connection with any
registration hereunder.

                  s. Within two (2) business days after a Registration Statement
which covers applicable Registrable Securities is ordered effective by the SEC,
the Company shall deliver, and shall cause legal counsel for the Company to
deliver, to the transfer agent for such Registrable Securities (with copies to
the Investors whose Registrable Securities are included in such Registration
Statement) confirmation that such Registration Statement has been declared
effective by the SEC in the form attached hereto as EXHIBIT A.

                  t. The Company shall take all other reasonable actions
necessary to expedite and facilitate disposition by the Investors of Registrable
Securities pursuant to a Registration Statement.

         4.       OBLIGATIONS OF THE INVESTORS.

                  a. At least seven (7) business days prior to the first
anticipated filing date of a Registration Statement, the Company shall notify
each Investor in writing of the information the Company requires from each such
Investor if such Investor elects to have any of such Investor's Registrable
Securities included in such Registration Statement. 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.

                  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 


<PAGE>   11

with the preparation and filing of any 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 such Registration
Statement.

                  c. In the event any Investor elects to participate in an
underwritten public offering pursuant to Section 2(b), each such 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.

                  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(h)
or the first sentence of 3(g), such Investor will immediately discontinue
disposition of Registrable Securities pursuant to any Registration Statement(s)
covering such Registrable Securities until such Investor's receipt of the copies
of the supplemented or amended prospectus contemplated by Section 3(h) or the
first sentence of 3(g).

                  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
approved by the Investors entitled hereunder to approve such arrangements, (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.

                  f. Each Investor agrees not to take any action to cause such
Investor to become a registered broker dealer as defined under the 1934 Act or
to effect any change to such Investor's status that would preclude the Company
from using Form S-3 for the Registration Statement.

         5.       EXPENSES OF REGISTRATION.

                  All reasonable expenses, other than underwriting and brokerage
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
fees and disbursements of counsel for the Company and reasonable fees and
disbursements of Legal Counsel, shall be paid by the Company.

         6.       INDEMNIFICATION.

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

                  a. To the fullest extent permitted by law, the Company will,
and hereby does, indemnify, hold harmless and defend each Investor who holds
such Registrable Securities, the directors, officers, partners, employees,
agents, representatives of, and each 



<PAGE>   12

Person, if any, who controls any Investor within the meaning of the 1933 Act or
the Securities Exchange Act of 1934, as amended (the "1934 ACT") (each, an
"INDEMNIFIED PERSON"), against any losses, claims, damages, liabilities,
judgments, fines, penalties, charges, costs, attorneys' fees, amounts paid in
settlement or expenses, joint or several, (collectively, "CLAIMS") incurred in
investigating, preparing or defending any action, claim, suit, inquiry,
proceeding, investigation or appeal taken from the foregoing by or before any
court or governmental, administrative or other regulatory agency, body or the
SEC, whether pending or threatened, whether or not an indemnified party is or
may be a party thereto ("INDEMNIFIED DAMAGES"), to which any of them may become
subject insofar as such Claims (or actions or proceedings, whether commenced or
threatened, in respect thereof) arise out of or are based upon: (i) any untrue
statement or alleged untrue statement of a material fact in a Registration
Statement or any post-effective amendment thereto or in any filing made in
connection with the qualification of the offering under the securities or other
"blue sky" laws of any jurisdiction in which Registrable Securities are offered
("BLUE SKY FILING"), or the omission or alleged omission to state a material
fact required to be stated therein 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, (iii) any violation or alleged violation by the Company of
the 1933 Act, the 1934 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 pursuant to a Registration Statement or
(iv) any material violation of this Agreement (the matters in the foregoing
clauses (i) through (iv) being, collectively, "VIOLATIONS"). The Company shall
reimburse the Investors and each controlling person, promptly as such expenses
are incurred and are due and payable, for any 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 by an Indemnified Person 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 connection with
the preparation of the Registration Statement or any such amendment thereof or
supplement thereto, if such prospectus was timely made available by the Company
pursuant to Section 3(d); (ii) with respect to any preliminary prospectus, shall
not inure to the benefit of any such person from whom the person asserting any
such Claim purchased the Registrable Securities that are the subject thereof (or
to the benefit of any person controlling such person) if the untrue statement or
omission of material fact contained in the preliminary prospectus was corrected
in the prospectus, as then amended or supplemented, if such prospectus was
timely made available by the Company pursuant to Section 3(d), 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; (iii) shall not be available to
the extent such Claim is 


<PAGE>   13

based on a failure of the Investor to deliver or to cause to be delivered the
prospectus made available by the Company, if such prospectus was timely made
available by the Company pursuant to Section 3(d); and (iv) 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. 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 to severally and not
jointly indemnify, hold harmless and defend, to the same extent and in the same
manner as is set forth in Section 6(a), the Company, each of its directors, each
of its officers who signs the Registration Statement, each Person, if any, who
controls the Company within the meaning of the 1933 Act or the 1934 Act
(collectively and together with an Indemnified Person, an "INDEMNIFIED PARTY"),
against any Claim or Indemnified Damages to which any of them may become
subject, under the 1933 Act, the 1934 Act or otherwise, insofar as such Claim or
Indemnified Damages arise out of or are 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(d), such Investor will reimburse any legal or other
expenses 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) and the agreement with respect to contribution
contained in Section 7 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 Section 6(b) for only that
amount of a Claim or Indemnified Damages as does not exceed the net proceeds to
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
and such prospectus was provided to Investors as required, as then amended or
supplemented.

                  c. Intentionally Omitted.

                  d. Promptly after receipt by an Indemnified Person or
Indemnified Party under this Section 6 of notice of the commencement of any
action or proceeding (including any governmental action or proceeding) involving
a Claim, such Indemnified Person or Indemnified Party shall, if a Claim in
respect thereof is to be made against any indemnifying party under this Section
6, deliver to the indemnifying party a written notice of the 


<PAGE>   14

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 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 differing interests between such Indemnified Person or
Indemnified Party and any other party represented by such counsel in such
proceeding. The Company shall pay reasonable fees for only one separate legal
counsel for the Investors, and such legal counsel shall be selected by the
Investors holding a majority in interest of the Registrable Securities included
in the Registration Statement to which the Claim relates. The Indemnified Party
or Indemnified Person shall cooperate fully with the indemnifying party in
connection with any negotiation or defense of any such action or claim by the
indemnifying party and shall furnish to the indemnifying party all information
reasonably available to the Indemnified Party or Indemnified Person which
relates to such action or claim. The indemnifying party shall keep the
Indemnified Party or Indemnified Person fully apprised at all times as to the
status of the defense or any settlement negotiations with respect thereto. No
indemnifying party shall be liable for any settlement of any action, claim or
proceeding effected without its written consent, provided, however, that the
indemnifying party shall not unreasonably withhold, delay or condition its
consent. No indemnifying party shall, without the consent of the Indemnified
Party or Indemnified Person, consent to entry of any judgment or enter into any
settlement or other compromise which does not include as an unconditional term
thereof the giving by the claimant or plaintiff to such Indemnified Party or
Indemnified Person of a release from all liability in respect to such claim or
litigation. Following indemnification as provided for hereunder, the
indemnifying party shall be subrogated to all rights of the Indemnified Party or
Indemnified Person with respect to all third parties, firms or corporations
relating to the matter for which indemnification has been made. 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 prejudiced in its ability to
defend such action.

                  e. 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 and when bills are received or Indemnified Damages
are incurred.

                  f. The indemnity agreements contained herein shall be in
addition to (i) any cause of action or similar right of the Indemnified Party or
Indemnified Person against the indemnifying party or others, and (ii) any
liabilities the indemnifying party may be subject to pursuant to the law.

         7.       CONTRIBUTION.

                  To the extent any indemnification by an indemnifying party is
prohibited or 


<PAGE>   15

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 seller
of Registrable Securities guilty of fraudulent misrepresentation (within the
meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from
any seller of Registrable Securities who was not guilty of fraudulent
misrepresentation; and (ii) contribution 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 1934 ACT.

                  With a view to making available to the Investors the benefits
of Rule 144 promulgated under the 1933 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. make and keep public information available, as those terms
are understood and defined in Rule 144;

                  b. file with the SEC in a timely manner all reports and other
documents required of the Company under the 1933 Act and the 1934 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 of such reports and other
documents is required for the applicable provisions of Rule 144; and

                  c. furnish to each Investor so long as such Investor owns
Registrable Securities, promptly upon request, (i) a written statement by the
Company that it has complied with the reporting requirements of Rule 144, the
1933 Act and the 1934 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 under this Agreement shall be automatically
assignable by the Investors to any transferee of all or any portion of
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) immediately following such transfer or
assignment the further disposition of such securities by the transferee or
assignee is restricted under the 1933 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 


<PAGE>   16

with the applicable requirements of the Securities Purchase Agreement.

         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 the written consent of the Company
and Investors who then hold two-thirds (2/3) of the Registrable Securities. Any
amendment or waiver effected in accordance with this Section 10 shall be binding
upon each Investor and the Company. No such amendment shall be effective to the
extent that it applies to less than all of the holders of the Registrable
Securities. No consideration shall be offered or paid to any Person to amend or
consent to a waiver or modification of any provision of any of this Agreement
unless the same consideration also is offered to all of the parties to this
Agreement.

         11.      MISCELLANEOUS.

                  a. A Person is deemed to be a holder of Registrable Securities
whenever such Person owns or is deemed to own of record such Registrable
Securities. If the Company receives conflicting instructions, notices or
elections from two or more Persons 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, consents, waivers or other communications
required or permitted to be given under the terms of this Agreement must be in
writing and will be deemed to have been delivered: (i) upon receipt, when
delivered personally; (ii) upon receipt, when sent by facsimile (provided
confirmation of transmission is mechanically or electronically generated and
kept on file by the sending party); or (iii) one business day after deposit with
a nationally recognized overnight delivery service, in each case properly
addressed to the party to receive the same. The addresses and facsimile numbers
for such communications shall be:

                  If to the Company:

                           Alpha-Beta Technology, Inc.
                           One Innovation Drive
                           Worcester, Massachusetts 01605
                           Telephone: 508-798-6900
                           Facsimile: 508-799-7968
                           Attention: Joseph M. Grimm

                  With a copy to:

                           Goodwin, Procter & Hoar LLP
                           Exchange Place


<PAGE>   17

                           Boston, Massachusetts 02109
                           Telephone: 617-510-1000
                           Facsimile: 617-523-1231
                           Attention: John J. Egan III, Esq.

                  If to Legal Counsel:

                           Katten Muchin & Zavis
                           525 West Monroe Street, Suite 1600
                           Chicago, Illinois 60661-3693
                           Telephone: 312-902-5200
                           Facsimile: 312-902-1061
                           Attention: Robert J. Brantman, Esq.


If to a Buyer, to its address and facsimile number on the Schedule of Buyers
attached hereto, with copies to such Buyer's representatives as set forth on the
Schedule of Buyers or to such other address and/or facsimile number and/or to
the attention of such other person as the recipient party has specified by
written notice given to each other party five days prior to the effectiveness of
such change. Written confirmation of receipt (A) given by the recipient of such
notice, consent, waiver or other communication, (B) mechanically generated by
the sender's facsimile machine containing the time, date, recipient facsimile
number and an image of such transmission or (C) provided by a courier or
overnight courier service shall be rebuttable evidence of personal service,
overnight or courier delivery or transmission by facsimile in accordance with
clause (i), (ii) or (iii) above, respectively.

                  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. The corporate laws of The Commonwealth of Massachusetts
shall govern all issues concerning the relative rights of the Company and its
stockholders. All other questions concerning the construction, validity,
enforcement and interpretation of this Agreement shall be governed by the
internal laws of the State of New York, without giving effect to any choice of
law or conflict of law provision or rule (whether of the State of New York or
any other jurisdictions) that would cause the application of the laws of any
jurisdictions other than the State of New York. Each party hereby irrevocably
submits to the non-exclusive jurisdiction of the state and federal courts
sitting the City of New York, for the adjudication of any dispute hereunder or
in connection herewith or with any transaction contemplated hereby or discussed
herein, and hereby irrevocably waives, and agrees not to assert in any suit,
action or proceeding, any claim that it is not personally subject to the
jurisdiction of any such court, that such suit, action or proceeding is brought
in an inconvenient forum or that the venue of such suit, action or proceeding is
improper. Each party hereby irrevocably waives personal service of process and
consents to process being served in any such suit, action or proceeding by
mailing a copy thereof to such party at the 


<PAGE>   18

address for such notices to it under this Agreement and agrees that such service
shall constitute good and sufficient service of process and notice thereof.
Nothing contained herein shall be deemed to limit in any way any right to serve
process in any manner permitted by law. 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 in that jurisdiction or the validity or
enforceability of any provision of this Agreement in any other jurisdiction. 
EACH PARTY HEREBY IRREVOCABLY WAIVES ANY RIGHT IT MAY HAVE, AND AGREES NOT TO
REQUEST, A JURY TRIAL FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR IN
CONNECTION HEREWITH OR ARISING OUT OF THIS AGREEMENT OR ANY TRANSACTION
CONTEMPLATED HEREBY.

                  e. This Agreement, the Securities Purchase Agreement and the
Certificate of Designations 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. This Agreement, the Securities Purchase
Agreement and the Certificate of Designations supersede all prior agreements and
understandings among the parties hereto with respect to the subject matter
hereof and thereof.

                  f. Subject to the requirements of Section 9, this Agreement
shall inure to the benefit of and be binding upon the permitted 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 identical 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 pursuant to this Agreement shall be made, unless otherwise specified
in this Agreement, by Investors holding a majority of the Registrable
Securities, determined as if all of the Preferred Shares then outstanding have
been converted into or exercised for Registrable Securities 

<PAGE>   19

without regard to any limitation on conversions of the Preferred Shares.

                  k. The language used in this Agreement will be deemed to be
the language chosen by the parties to express their mutual intent and no rules
of strict construction will be applied against any party.

                  l. 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.

                                   * * * * * *



<PAGE>   20



         IN WITNESS WHEREOF, the parties have caused this Registration Rights
Agreement to be duly executed as of day and year first above written.


COMPANY:                                  BUYERS:
- --------                                  -------

ALPHA-BETA TECHNOLOGY, INC.               HFTP INVESTMENTS LLC

                                          By: Promethean Investment Group L.L.C.
                                          Its: Investment Manager



By: /s/ Joseph M. Grimm                   By: /s/ James F. O'Brien, Jr.
    --------------------------------          ----------------------------------
Name: Joseph M. Grimm                     Name: James F. O'Brien, Jr.
Its:  Chief Financial Officer             Its: President


<PAGE>   21



                               SCHEDULE OF BUYERS



<TABLE>
<CAPTION>
                                      INVESTOR ADDRESS                   INVESTOR'S REPRESENTATIVES' ADDRESS
   INVESTOR NAME                    AND FACSIMILE NUMBER                        AND FACSIMILE NUMBER
- --------------------        ---------------------------------------      -----------------------------------
<S>                         <C>                                          <C>
HFTP INVESTMENTS LLC        c/o Promethean Investment Group, L.L.C.      Promethean Investment Group, L.L.C.
                            40 West 57th Street, Suite 1520              40 West 57th Street, Suite 1520
                            New York, New York 10019                     New York, New York 10019
                            Attn: James F. O'Brien, Jr.                  Attn: James F. O'Brien, Jr.
                            Facsimile: 212-698-0505                      Facsimile: 212-698-0505

                                                                         Katten Muchin & Zavis
                                                                         525 West Monroe, Suite 1600
                                                                         Chicago, Illinois  60661-3693
                                                                         Attn: Robert J. Brantman, Esq.
                                                                         Facsimile: 312-902-1061
</TABLE>


<PAGE>   22


                                                                       EXHIBIT A

                         FORM OF NOTICE OF EFFECTIVENESS
                            OF REGISTRATION STATEMENT



- ----------------------
ATTN:

              Re:  ALPHA-BETA TECHNOLOGY, INC.
                   ---------------------------

Ladies and Gentlemen:

         Alpha-Beta Technology, Inc., a Massachusetts corporation (the
"COMPANY"), has entered into that certain Securities Purchase Agreement (the
"PURCHASE AGREEMENT") by and among the Company and the buyers named therein
(collectively, the "HOLDERS") pursuant to which the Company issued to the
Holders shares of its Series F Preferred Stock, $0.01 par value per share, (the
"PREFERRED SHARES") convertible into shares of the Company's common stock, $0.01
par value per share (the "COMMON STOCK"). Pursuant to the Purchase Agreement,
the Company also has entered into a Registration Rights Agreement with the
Holders (the "REGISTRATION RIGHTS AGREEMENT") pursuant to which the Company
agreed, among other things, to register the Registrable Securities (as defined
in the Registration Rights Agreement), including the shares of Common Stock
issuable upon conversion of the Preferred Shares, under the Securities Act of
1933, as amended (the "1933 ACT"). In connection with the Company's obligations
under the Registration Rights Agreement, on ____________ ___, 1998, the Company
filed a Registration Statement on Form S-3 (File No. 333-_____________) (the
"REGISTRATION STATEMENT") with the Securities and Exchange Commission (the
"SEC") relating to the Registrable Securities which names each of the Holders as
a selling stockholder thereunder.

         In connection with the foregoing, we advise you that a member of the
SEC's staff has advised us by telephone that the SEC has entered an order
declaring the Registration Statement effective under the 1933 Act at [ENTER TIME
OF EFFECTIVENESS] on [ENTER DATE OF EFFECTIVENESS] and we have no knowledge,
after telephonic inquiry of a member of the SEC's staff, that any stop order
suspending its effectiveness has been issued or that any proceedings for that
purpose are pending before, or threatened by, the SEC.

                                             Very truly yours,

                                             ALPH-BETA TECHNOLOGY, INC.


                                             By:

cc:      [LIST NAMES OF HOLDERS]








<PAGE>   1
                                                                     EXHIBIT 4.3


                                                          FEDERAL IDENTIFICATION
                                                          NO. 04-2997834
                                                              ------------------


                       THE COMMONWEALTH OF MASSACHUSETTS
- -----------                 WILLIAM FRANCIS GALVIN
Examiner                 Secretary of the Commonwealth
             One Ashburton Place, Boston, Massachusetts 02108-1512

                        CERTIFICATE OF VOTE OF DIRECTORS
                    ESTABLISHING A CLASS OR SERIES OF STOCK
                    (GENERAL LAWS, CHAPTER 156B, SECTION26)

             We,     Spiros Jamas                                 *President 
                 -----------------------------------------------,

             and     D. Davidson Easson, Jr.                      *Clerk 
                 -----------------------------------------------,

             of ALPHA-BETA TECHNOLOGY, INC.
                -------------------------------------------------------------,
                             (Exact name of corporation)

             located at: One Innovation Drive, Worcester, Massachusetts 01605
                        -----------------------------------------------------,
                           (Street Address of corporation in Massachusetts)

             do hereby certify that at a meeting of the directors of the 
             corporation held on October 5, 1998, the following vote amending
             and restating the relative rights and preferences of a series of
             stock prior to issuance was duly adopted:

                    See attached pages 2A through 28A and 2B










             *Delete the inapplicable words.
- -----------  NOTE: VOTES FOR WHICH THE SPACE PROVIDED ABOVE IS NOT SUFFICIENT 
P.C.         SHOULD BE PROVIDED ON ONE SIDE OF SEPARATE 8 1/2 x 11 SHEETS OF
             WHITE PAPER, NUMBERED 2A, 2B, ETC., WITH A LEFT MARGIN OF AT LEAST
             1 INCH.

<PAGE>   2


                        CERTIFICATE OF VOTE OF DIRECTORS
                         OF ALPHA-BETA TECHNOLOGY, INC.
                    AMENDING AND RESTATING TERMS OF SERIES F
                           CONVERTIBLE PREFERRED STOCK
                                PRIOR TO ISSUANCE

         WHEREAS, on October 16, 1998, Alpha-Beta Technology, Inc. (the
"COMPANY"), a corporation organized and existing under the Massachusetts
Business Corporation Law (the "MBCL"), filed a Certificate of Vote of Directors
Establishing Series F Convertible Preferred Stock with the Secretary of State of
The Commonwealth of Massachusetts certifying that the Board of Directors of the
Company adopted votes (i) authorizing three thousand (3,000) shares of the
Company's Series F Convertible Preferred Stock out of the Company's previously
authorized preferred stock, par value $0.01 per share (the "PREFERRED STOCK"),
and (ii) providing for the designations, preferences and relative participating,
optional or other rights, and the qualifications, limitations or restrictions
(collectively, "RIGHTS AND RESTRICTIONS") thereof;

         WHEREAS, the Company has not yet issued any shares of the Series F
Convertible Preferred Stock; and

         WHEREAS, the Company has decided to amend and restate the Rights and
Restrictions of the Series F Convertible Preferred Stock.

         NOW THEREFORE, the Company does hereby certify that pursuant to
authority conferred upon the Company's Board of Directors by the Company's
Restated Articles of Organization, as amended, and pursuant to Section 26 of the
MBCL, the Board of Directors of the Company authorized the amendment and
restatement of the Rights and Restrictions of the Series F Convertible Preferred
Stock as follows:

                           VOTED, to amend and restate the Rights and
                  Restrictions of the Company's Series F Convertible Preferred
                  Stock (the "Preferred Shares"), par value $0.01 per share as
                  follows:

         (1)      DIVIDENDS. The Preferred Shares shall not bear any dividends.

         (2)      HOLDER'S CONVERSION OF PREFERRED SHARES. A holder of Preferred
Shares shall

<PAGE>   3

have the right, at such holder's option, to convert the Preferred Shares into
shares of the Company's common stock, $0.01 par value per share (the "COMMON
STOCK"), on the following terms and conditions:

                  (a)      CONVERSION RIGHT. At any time or times on or after
         the Issuance Date (as defined below), any holder of Preferred Shares
         shall be entitled to convert any whole number of Preferred Shares into
         fully paid and nonassessable shares (rounded to the nearest whole share
         in accordance with Section 2(h)) of Common Stock, at the Conversion
         Rate (as defined below); provided, however, that in no event shall any
         holder be entitled to convert Preferred Shares in excess of that number
         of Preferred Shares which, upon giving effect to such conversion, would
         cause the aggregate number of shares of Common Stock beneficially owned
         by the holder and its affiliates to exceed 4.99% of the outstanding
         shares of the Common Stock following such conversion. For purposes of
         the foregoing proviso, the aggregate number of shares of Common Stock
         beneficially owned by the holder and its affiliates shall include the
         number of shares of Common Stock issuable upon conversion of the
         Preferred Shares with respect to which the determination of such
         proviso is being made, but shall exclude the number of shares of Common
         Stock which would be issuable upon (i) conversion of the remaining,
         nonconverted Preferred Shares beneficially owned by the holder and its
         affiliates and (ii) exercise or conversion of the unexercised or
         unconverted portion of any other securities of the Company (including,
         without limitation, any warrants or convertible preferred stock)
         subject to a limitation on conversion or exercise analogous to the
         limitation contained herein beneficially owned by the holder and its
         affiliates. Except as set forth in the preceding sentence, for purposes
         of this Section 2(a), beneficial ownership shall be calculated in
         accordance with Section 13(d) of the Securities Exchange Act of 1934,
         as amended.

                  (b)      CONVERSION RATE AND OTHER DEFINITIONS. The number of
         shares of Common Stock issuable upon conversion of each of the
         Preferred Shares pursuant to Sections (2)(a) and 2(g) shall be
         determined according to the following formula (the "CONVERSION RATE"):

                           (.06)(N/365)(1,000) + 1,000
                           ---------------------------
                                 Conversion Price

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


                           (i)      "CONVERSION PRICE" means, as of any
                  Conversion Date (as defined below) or other date of
                  determination, the lower of the Fixed Conversion Price and the
                  Floating Conversion Price, each in effect as of such date and
                  subject to adjustment as provided herein;

                           (ii)     "FIXED CONVERSION PRICE" means (A) during
                  the period beginning on the initial Issuance Date of the
                  Preferred Shares and ending on the Additional Closing Date,
                  $1.50 and (B) on and after the Additional Closing Date (as


<PAGE>   4

                  defined in the Securities Purchase Agreement, an amount equal
                  to the sum of the Market Price on the Measurement Date and the
                  Spread Adjustment, subject to adjustment as provided herein;

                           (iii)    "FLOATING CONVERSION PRICE" means, as of any
                  date of determination, the lower of (A) the amount obtained by
                  multiplying the Conversion Percentage in effect as of such
                  date by the Market Price for the Common Stock and (B) the
                  Closing Bid Price on the Conversion Date (as defined in
                  Section 2(g)(i) below),each subject to adjustment as provided
                  herein;

                           (iv)     "CONVERSION PERCENTAGE" means 85%, subject
                  to adjustment as provided herein;

                           (v)      "MARKET PRICE" means, with respect to any
                  security for any date of determination, the price which shall
                  be computed as the arithmetic average of the Closing Sale
                  Price of the Common Stock for the 5 consecutive trading days
                  immediately preceding such date;

                           (vi)     "MEASUREMENT DATE" means the business day 
                  after the date of the meeting of the Company's stockholders
                  approving the proposals contained in Section 4(j) of the
                  Securities Purchase Agreement between the Company and the
                  initial holders of the Preferred Shares (the "SECURITIES
                  PURCHASE AGREEMENT");

                           (vii)    "CLOSING SALE PRICE" means, for any security
                  as of any date, the last closing trade price for such security
                  on the Principal Market (as defined below) as reported by
                  Bloomberg, or, if the Principal Market is not the principal
                  securities exchange or trading market for such security, the
                  last closing trade price of such security on the principal
                  securities exchange or trading market where such security is
                  listed or traded as reported by Bloomberg, or if the foregoing
                  do not apply, the last closing trade 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 last
                  closing trade price is reported for such security by
                  Bloomberg, the last closing bid price of such security as
                  reported by Bloomberg, or, if no last closing bid 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 Sale Price cannot be calculated for such security
                  on such date on any of the foregoing bases, the Closing Sale
                  Price of such security on such date shall be the fair market
                  value as mutually determined by the Company and the holders of
                  a majority of the shares of Series F Preferred Stock. If the
                  Company and the holders of Preferred Shares are unable to
                  agree upon the fair market value of the Common Stock, then
                  such dispute shall be resolved pursuant to Section 2(f)(iii)
                  with the term "Closing Sale Price" being substituted for the
                  term "Market Price." (All such determinations to be
                  appropriately adjusted for any stock dividend, stock, split or
                  other similar transaction during such period);


<PAGE>   5

                           (viii)   "CLOSING BID PRICE" means, for any security 
                  as of any date, the last closing bid price for such security
                  on the Principal Market as reported by Bloomberg, or, if the
                  Principal Market is not the principal securities exchange or
                  trading market for such security, the last 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, or if the foregoing do not apply, the
                  last closing bid 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 closing bid
                  price is reported for such security by Bloomberg, the last
                  closing trade price of such security as reported by Bloomberg,
                  or, if no last closing trade 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
                  mutually determined by the Company and the holders of a
                  majority of the shares of Series F Preferred Stock. If the
                  Company and the holders of Preferred Shares are unable to
                  agree upon the fair market value of the Common Stock, then
                  such dispute shall be resolved pursuant to Section 2(f)(iii)
                  with the term "Closing Bid Price" being substituted for the
                  term "Market Price." (All such determinations to be
                  appropriately adjusted for any stock dividend, stock, split or
                  other similar transaction during such period);

                           (ix)     "N" means the number of days from, but
                  excluding, the Issuance Date through and including the
                  Conversion Date for the Preferred Shares for which conversion
                  is being elected;

                           (x)      "ISSUANCE DATE" means, with respect to each
                  Preferred Share, the date of issuance of the applicable
                  Preferred Share;

                           (xi)     "SEC" means the Securities and Exchange 
                  Commission;

                           (xii)    "REGISTRATION RIGHTS AGREEMENT" means that
                  certain Registration Rights Agreement among the Company and
                  the initial purchasers of the Preferred Shares;

                           (xiii)   "REGISTRATION STATEMENT" means a 
                  Registration Statement (as defined in the Registration Rights
                  Agreement);

                           (xiv)    "RESERVE NUMBER" means the number of shares 
                  of Common Stock reserved for issuance upon the conversion of
                  the Preferred Shares as set by the Company on the Measurement
                  Date, provided, however, that such Reserve Number shall not be
                  less than 200% of the sum of (A) the number of 


<PAGE>   6

                  Conversion Shares issuable on the Measurement Date upon the
                  conversion of all of the outstanding Initial Preferred Shares
                  and the Additional Preferred Shares to be issued by the
                  Company and (B) the number of Conversion Shares held by Buyers
                  on the Measurement Date;

                           (xv)     "SPREAD ADJUSTMENT" means the Market Price 
                  on the Measurement Date minus the Base Price;

                           (xvi)    "BASE PRICE" means the aggregate purchase 
                  price for the Initial Preferred Shares and the Additional
                  Preferred Shares pursuant to the Securities Purchase Agreement
                  divided by the Reserve Number; and

                           (xvii)   "PRINCIPAL MARKET" means the Nasdaq National
                  Market, The New York Stock Exchange, Inc. or The American
                  Stock Exchange, Inc.

                  (c)      INTENTIONALLY OMITTED.

                  (d)      ADJUSTMENT TO CONVERSION PRICE - DILUTION AND OTHER
         EVENTS. In order to prevent dilution of the rights granted under this
         Certificate of Designations, the Conversion Price will be subject to
         adjustment from time to time as provided in this Section 2(d).

                           (i)      ADJUSTMENT OF FIXED CONVERSION PRICE UPON
                  ISSUANCE OF COMMON STOCK. If and whenever on or after the date
                  of issuance of the Preferred Shares, the Company issues or
                  sells, or is deemed to have issued or sold, any shares of
                  Common Stock (other than shares of Common Stock deemed to have
                  been issued by the Company in connection with Approved
                  Issuances (as defined below)) for a consideration per share
                  less than the Market Price in effect immediately prior to such
                  time (the "APPLICABLE PRICE"), then immediately after such
                  issue or sale, the Fixed Conversion Price shall be reduced to
                  an amount equal to the product of (x) the Fixed Conversion
                  Price in effect immediately prior to such issue or sale and
                  (y) the quotient determined by dividing (1) the sum of (I) the
                  product of the Applicable Price and the number of shares of
                  Common Stock Deemed Outstanding (as defined below) immediately
                  prior to such issue or sale, and (II) the consideration, if
                  any, received by the Company upon such issue or sale, by (2)
                  the product of (I) the Applicable Price and (II) the number of
                  shares of Common Stock Deemed Outstanding immediately after
                  such issue or sale. For purposes of determining the adjusted
                  Fixed Conversion Price under this Section 2(d)(i), the
                  following shall be applicable:

                                    (A)      ISSUANCE OF OPTIONS. If the
                           Company in any manner grants any rights or options to
                           subscribe for or to purchase Common Stock (other than
                           in connection with an Approved Issuance or upon
                           conversion of the Preferred Shares) or any stock or
                           other securities convertible into or exchangeable for
                           Common Stock (such rights or 



<PAGE>   7

                           options being herein called "OPTIONS" and such
                           convertible or exchangeable stock or securities being
                           herein called "CONVERTIBLE SECURITIES") and the price
                           per share for which Common Stock is issuable upon the
                           exercise of such Options or upon conversion or
                           exchange of such Convertible Securities is less than
                           the Applicable Price, then the total maximum number
                           of shares of Common Stock issuable upon the exercise
                           of such Options or upon conversion or exchange of the
                           total maximum amount of such Convertible Securities
                           issuable upon the exercise of such Options shall be
                           deemed to be outstanding and to have been issued and
                           sold by the Company for such price per share. For
                           purposes of this Section 2(d)(i)(A), the "price per
                           share for which Common Stock is issuable upon
                           exercise of such Options or upon conversion or
                           exchange of such Convertible Securities" is
                           determined by dividing (I) the total amount, if any,
                           received or receivable by the Company as
                           consideration for the granting of such Options, plus
                           the minimum aggregate amount of additional
                           consideration payable to the Company upon the
                           exercise of all such Options, plus in the case of
                           such Options which relate to Convertible Securities,
                           the minimum aggregate amount of additional
                           consideration, if any, payable to the Company upon
                           the issuance or sale of such Convertible Securities
                           and the conversion or exchange thereof, by (II) the
                           total maximum number of shares of Common Stock
                           issuable upon exercise of such Options or upon the
                           conversion or exchange of all such Convertible
                           Securities issuable upon the exercise of such
                           Options. No adjustment of the Fixed Conversion Price
                           shall be made upon the actual issuance of such Common
                           Stock or of such Convertible Securities upon the
                           exercise of such Options or upon the actual issuance
                           of such Common Stock upon conversion or exchange of
                           such Convertible Securities.

                                    (B)      ISSUANCE OF CONVERTIBLE SECURITIES.
                           If the Company in any manner issues or sells any
                           Convertible Securities and the price per share for
                           which Common Stock is issuable upon such conversion
                           or exchange is less than the Applicable Price, then
                           the maximum number of shares of Common Stock issuable
                           upon conversion or exchange of such Convertible
                           Securities shall be deemed to be outstanding and to
                           have been issued and sold by the Company for such
                           price per share. For the purposes of this Section
                           2(d)(i)(B), the "price per share for which Common
                           Stock is issuable upon such conversion or exchange"
                           is determined by dividing (I) the total amount
                           received or receivable by the Company as
                           consideration for the issue or sale of such
                           Convertible Securities, plus the minimum aggregate
                           amount of additional consideration, if any, payable
                           to the Company upon the conversion or exchange
                           thereof, by (II) the total maximum number of shares
                           of 



<PAGE>   8

                           Common Stock issuable upon the conversion or exchange
                           of all such Convertible Securities. No adjustment of
                           the Fixed Conversion Price shall be made upon the
                           actual issue of such Common Stock upon conversion or
                           exchange of such Convertible Securities, and if any
                           such issue or sale of such Convertible Securities is
                           made upon exercise of any Options for which
                           adjustment of the Fixed Conversion Price had been or
                           are to be made pursuant to other provisions of this
                           Section 2(d)(i), no further adjustment of the Fixed
                           Conversion Price shall be made by reason of such
                           issue or sale.

                                    (C)      CHANGE IN OPTION PRICE OR RATE OF 
                           CONVERSION. If the purchase price provided for in any
                           Options, the additional consideration, if any,
                           payable upon the issue, conversion or exchange of any
                           Convertible Securities, or the rate at which any
                           Convertible Securities are convertible into or
                           exchangeable for Common Stock change at any time, the
                           Fixed Conversion Price in effect at the time of such
                           change shall be readjusted to the Fixed Conversion
                           Price which would have been in effect at such time
                           had such Options or Convertible Securities still
                           outstanding provided for such changed purchase price,
                           additional consideration or changed conversion rate,
                           as the case may be, at the time initially granted,
                           issued or sold; provided that no adjustment shall be
                           made if such adjustment would result in an increase
                           of the Fixed Conversion Price then in effect.

                                    (D)      CERTAIN DEFINITIONS. For purposes
                           of determining the adjusted Fixed Conversion Price
                           under this Section 2(d)(i), the following terms have
                           meanings set forth below:

                                            (I)       "APPROVED ISSUANCES" shall
                                    mean (i) the issuance of Common Stock in a
                                    firm commitment, underwritten public
                                    offering with commissions, underwriting
                                    discounts and allowances not in excess of
                                    7.0% of the gross proceeds, (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 plan,
                                    restricted stock plan, stock purchase plan
                                    or other plan or written compensation
                                    contract for the benefit of the Company's
                                    employees or directors.

                                            (II)      "COMMON STOCK DEEMED
                                    OUTSTANDING" means, at any given time, the
                                    number of shares of Common Stock actually
                                    outstanding at such time, plus the number of
                                    shares of Common Stock deemed to be
                                    outstanding pursuant to Sections 2(d)(i)(A)
                                    and 2(d)(i)(B) hereof regardless of whether
                                    the Options or Convertible Securities are
                                    actually exercisable at such time, but

<PAGE>   9

                                    excluding any shares of Common Stock
                                    issuable upon conversion of the Preferred
                                    Shares.

                                    (E)      TREATMENT OF EXPIRED OPTIONS AND 
                           UNEXERCISED CONVERTIBLE SECURITIES. If, in any case,
                           the total number of shares of Common Stock issuable
                           upon the exercise of any Option or upon exercise,
                           conversion or exchange of any Convertible Security 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 Fixed Conversion Price then in effect
                           will be readjusted to the Fixed Conversion Price
                           which would have been 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.

                                    (F)      EFFECT ON FIXED CONVERSION PRICE OF
                           CERTAIN EVENTS. For purposes of determining the
                           adjusted Fixed Conversion Price under this Section
                           2(d)(i), the following shall be applicable:

                                             (I)      CALCULATION OF 
                                    CONSIDERATION RECEIVED. If any Common Stock,
                                    Options or Convertible Securities are issued
                                    or sold or deemed to have been issued or
                                    sold for cash, the consideration received
                                    therefor will be deemed to be the amount
                                    received by the Company therefor, before
                                    deduction of reasonable commissions,
                                    underwriting discounts or allowances or
                                    other reasonable expenses paid or incurred
                                    by the Company in connection with such
                                    issuance or sale. In case any Common Stock,
                                    Options or Convertible Securities are issued
                                    or sold for a consideration other than cash,
                                    the amount of the consideration other than
                                    cash received by the Company will be the
                                    fair 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 of such security on the
                                    date of receipt. In case any Common Stock,
                                    Options or Convertible Securities are issued
                                    to the owners of the non-surviving entity in
                                    connection with any merger in which the
                                    Company is the surviving entity the amount
                                    of consideration therefor will be deemed to
                                    be the fair value of such portion of the net
                                    assets and business of the non-surviving
                                    entity as is attributable to such Common
                                    Stock, Options or Convertible Securities, as
                                    the case may be. The fair value of any


<PAGE>   10

                                    consideration other than cash or securities
                                    will be determined jointly by the Company
                                    and the holders of a majority of the
                                    Preferred Shares then outstanding. If such
                                    parties are unable to reach agreement within
                                    ten (10) days after the occurrence of an
                                    event requiring valuation (the "VALUATION
                                    EVENT"), the fair value of such
                                    consideration will be determined within
                                    forty-eight (48) hours of the tenth (10th)
                                    day following the Valuation Event by an
                                    independent, reputable appraiser selected by
                                    the Company. The determination of such
                                    appraiser shall be deemed binding upon all
                                    parties absent manifest error.

                                            (II)      INTEGRATED TRANSACTIONS.
                                    In case any Option is issued in connection
                                    with the issue or sale of other securities
                                    of the Company, together comprising one
                                    integrated transaction in which no specific
                                    consideration is allocated to such Options
                                    by the parties thereto, the Options will be
                                    deemed to have been issued for a
                                    consideration of $.01.

                                            (III)     TREASURY SHARES. The
                                    number of shares of Common Stock outstanding
                                    at any given time does not include shares
                                    owned or held by or for the account of the
                                    Company, and the disposition of any shares
                                    so owned or held will be considered an issue
                                    or sale of Common Stock.

                                            (IV)      RECORD DATE. If the
                                    Company takes a record of the holders of
                                    Common Stock for the purpose of entitling
                                    them (1) to receive a dividend or other
                                    distribution payable in Common Stock,
                                    Options or in Convertible Securities or (2)
                                    to subscribe for or purchase Common Stock,
                                    Options or Convertible Securities, then such
                                    record date will be deemed to be the date of
                                    the issue or sale of the shares of Common
                                    Stock deemed to have been issued or sold
                                    upon the declaration of such dividend or the
                                    making of such other distribution or the
                                    date of the granting of such right of
                                    subscription or purchase, as the case may
                                    be.

                           (ii)     ADJUSTMENT OF FIXED CONVERSION PRICE UPON
                  SUBDIVISION OR COMBINATION OF COMMON STOCK. If the Company at
                  any time subdivides (by any stock split, stock dividend,
                  recapitalization or otherwise) one or more classes of its
                  outstanding shares of Common Stock into a greater number of
                  shares, the Fixed Conversion Price in effect immediately prior
                  to such subdivision will be proportionately reduced. If the
                  Company at any time combines (by combination, reverse stock
                  split or otherwise) one or more classes of its outstanding
                  shares of Common Stock into a smaller number of shares, the
                  Fixed Conversion Price in effect immediately prior to such
                  combination will be proportionately increased.


<PAGE>   11

                           (iii)    ADJUSTMENT OF FLOATING CONVERSION PRICE UPON
                  ISSUANCE OF CONVERTIBLE SECURITIES. If the Company in any
                  manner issues or sells Convertible Securities that are
                  convertible into Common Stock at a price which varies with the
                  market price of the Common Stock (the formulation for such
                  variable price being herein referred to as, the "VARIABLE
                  PRICE") and such Variable Price is not calculated using the
                  same formula used to calculate the Floating Conversion Price
                  in effect immediately prior to the time of such issue or sale,
                  the Company shall provide written notice thereof via facsimile
                  and overnight courier to each holder of the Preferred Shares
                  ("VARIABLE NOTICE") on the date of issuance of such
                  Convertible Securities. If the holders of Preferred Shares
                  representing at least two-thirds (2/3) of the Preferred Shares
                  then outstanding provide written notice via facsimile and
                  overnight courier (the "VARIABLE PRICE ELECTION NOTICE") to
                  the Company within five (5) business days of receiving a
                  Variable Notice that such holders desire to replace the
                  Floating Conversion Price then in effect with the Variable
                  Price described in such Variable Notice, the Company shall
                  prepare and deliver to each holder of the Preferred Shares via
                  facsimile and overnight courier a copy of an amendment to this
                  Certificate of Designations (the "VARIABLE PRICE AMENDMENT")
                  that substitutes the Variable Price for the Floating
                  Conversion Price (together with such modifications to this
                  Certificate of Designations as may be required to give full
                  effect to the substitution of the Variable Price for the
                  Floating Conversion Price) within five (5) business days after
                  receipt of the requisite number of Variable Price Election
                  Notices set forth above. The Company shall file such Variable
                  Price Amendment with the Secretary of State of The
                  Commonwealth of Massachusetts within five (5) business days
                  after delivery of the Variable Price Amendment to the holders
                  of the Preferred Shares; provided that in the event that the
                  Company receives a notice prior to the filing of the Variable
                  Price Amendment from any holder who has delivered a Variable
                  Price Election Notice in connection with such Variable Price
                  Amendment that such holder objects to the form of the Variable
                  Price Amendment, the Company shall not file such Variable
                  Price Amendment until such time as the Variable Price
                  Amendment has been revised to the reasonable satisfaction of
                  such holder and approved in writing by the holders of the
                  Preferred Shares representing at least two-thirds (2/3) of the
                  Preferred Shares then outstanding. Except as provided in the
                  preceding proviso, a holder's delivery of a Variable Price
                  Election Notice shall serve as the consent required to amend
                  this Certificate of Designation pursuant to Section 12 below.

                           (iv)     REORGANIZATION, RECLASSIFICATION,
                  CONSOLIDATION, MERGER OR SALE. Any recapitalization,
                  reorganization, reclassification, consolidation, merger, sale
                  of all or substantially all of the Company's assets to another
                  Person (as defined below) or other transaction which is
                  effected in such a way that holders of Common Stock are
                  entitled to receive (either directly or upon subsequent

<PAGE>   12

                  liquidation) stock, securities or assets with respect to or in
                  exchange for Common Stock is referred to herein as "ORGANIC
                  CHANGE." Prior to the consummation of any Organic Change, the
                  Company will make appropriate provision (in form and substance
                  reasonably satisfactory to the holders of a majority of the
                  Preferred Shares then outstanding) to insure that each of the
                  holders of the Preferred Shares will thereafter have the right
                  to acquire and receive in lieu of or in addition to (as the
                  case may be) the shares of Common Stock otherwise acquirable
                  and receivable upon the conversion of such holder's Preferred
                  Shares, such shares of stock, securities or assets that would
                  have been issued or payable in such Organic Change with
                  respect to or in exchange for the number of shares of Common
                  Stock which would have been acquirable and receivable upon the
                  conversion of such holder's Preferred Shares had such Organic
                  Change not taken place (without taking into account any
                  limitations or restrictions on the timing or amount of
                  conversions). In any such case, the Company will make
                  appropriate provision (in form and substance reasonably
                  satisfactory to the holders of a majority of the Preferred
                  Shares then outstanding) with respect to such holders' rights
                  and interests to insure that the provisions of this Section
                  2(d) and Section 2(e) will thereafter be applicable to the
                  Preferred Shares (including, in the case of any such
                  consolidation, merger or sale in which the successor entity or
                  purchasing entity is other than the Company, an immediate
                  adjustment of the Fixed Conversion Price to the value for the
                  Common Stock reflected by the terms of such consolidation,
                  merger or sale, if the value so reflected is less than the
                  Fixed Conversion Price in effect immediately prior to such
                  consolidation, merger or sale and an immediate revision to the
                  Floating Conversion Price to reflect the price of the common
                  stock of the surviving entity and the market in which such
                  common stock is traded). The Company will not effect any such
                  consolidation, merger or sale, unless prior to the
                  consummation thereof, the successor entity (if other than the
                  Company) resulting from consolidation or merger or the entity
                  purchasing such assets assumes, by written instrument (in form
                  and substance reasonably satisfactory to the holders of a
                  majority of the Preferred Shares then outstanding), the
                  obligation to deliver to each holder of Preferred Shares such
                  shares of stock, securities or assets as, in accordance with
                  the foregoing provisions, such holder may be entitled to
                  acquire. "PERSON" shall mean an individual, a limited
                  liability company, a partnership, a joint venture, a
                  corporation, a trust, an unincorporated organization and a
                  government or any department or agency thereof.

                           (v)      CERTAIN EVENTS.  If any event occurs of the
                  type contemplated by the provisions of this Section 2(d) but
                  not expressly provided for by such provisions (including,
                  without limitation, the granting of stock appreciation rights,
                  phantom stock rights or other rights with equity features),
                  then the Company's Board of Directors will make an appropriate
                  adjustment in the Conversion Price so as to protect the rights
                  of the holders of the Preferred Shares; provided that no such
                  adjustment will increase the Conversion Price as otherwise
                  determined pursuant to this Section 2(d).


<PAGE>   13

                           (vi)     NOTICES.

                                    (A) Immediately upon any adjustment of the
                           Conversion Price as provided in Section 2(d)(i), the
                           Company will give written notice thereof to each
                           holder of the Preferred Shares, setting forth in
                           reasonable detail and certifying the calculation of
                           such adjustment.

                                    (B) The Company will give written notice to
                           each holder of the Preferred Shares at least twenty
                           (20) days prior to the date on which the Company
                           closes its books or takes a record (I) with respect
                           to any dividend or distribution upon the Common
                           Stock, (II) with respect to any pro rata subscription
                           offer to holders of Common Stock or (III) for
                           determining rights to vote with respect to any
                           Organic Change, dissolution or liquidation and in no
                           event shall such notice be provided to such holder
                           prior to such information being made known to the
                           public.

                                    (C) The Company will also give written
                           notice to each holder of Preferred Shares at least
                           twenty (20) days prior to the date on which any
                           Organic Change, dissolution or liquidation will take
                           place and in no event shall such notice be provided
                           to such holder prior to such information being made
                           known to the public.

                           (e)      PURCHASE RIGHTS. In addition to any
                  adjustments of the Conversion Price pursuant to Section 2(d),
                  if at any time after the Issuance Date the Company grants,
                  issues or sells any Options, Convertible Securities or rights
                  to purchase stock, warrants, securities or other property pro
                  rata to the record holders of any class of Common Stock (the
                  "PURCHASE RIGHTS"), then the holders of the Preferred Shares
                  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 Preferred Shares (without taking into account any
                  limitations or restrictions on the timing or amount of
                  conversions) 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 the Common Stock are to be determined for
                  the grant, issue or sale of such Purchase Rights.

                           (f)      FIXING OF CONVERSION PRICE - MAJOR CORPORATE
                  EVENT ANNOUNCEMENT. Notwithstanding anything contained in
                  Section 2(b) above, in the event (i) the Company makes a
                  public announcement that it intends to consolidate or merge
                  with or into another Person or engage in a business
                  combination involving the issuance or exchange of 40% or more
                  of the 


<PAGE>   14

                  Company's outstanding Common Stock (ii) the Company makes a
                  public announcement that it intends to sell or transfer
                  substantially all of the Company's assets, or (iii) any
                  person, group or entity (including the Company) publicly
                  announces a purchase, tender or exchange offer for 50% or more
                  of the Company's outstanding Common Stock (the transactions
                  described in clauses (i), (ii) and (iii) above are hereinafter
                  referred to as "MAJOR CORPORATE EVENTS" and the date of the
                  announcement referred to in clause (i), (ii) or (iii) is
                  hereinafter referred to as the "ANNOUNCEMENT DATE"), then the
                  Fixed Conversion Price shall, effective upon the Announcement
                  Date and continuing through the Adjusted Conversion Price
                  Termination Date (as defined below), be equal to the
                  Conversion Price which would have been applicable for a
                  conversion by the holder pursuant to Section 2(a) occurring on
                  the Announcement Date. From and after the Adjusted Conversion
                  Price Termination Date, the Conversion Price shall be
                  determined as set forth in Section 2(a). For purposes hereof,
                  "ADJUSTED CONVERSION PRICE TERMINATION DATE" shall mean, with
                  respect to any proposed Major Corporate Event for which a
                  public announcement as contemplated by this Section 2(f) has
                  been made, the date upon which the Company or the person,
                  group or entity (in the case of clause (iii) above) publicly
                  announces the consummation, termination or abandonment of the
                  proposed Major Corporate Event which was the subject of the
                  previous public announcement.

                           (g)      MECHANICS OF CONVERSION.

                                    (i)      HOLDER'S DELIVERY REQUIREMENTS.  To
                           convert Preferred Shares into full shares of Common
                           Stock on any date (the "CONVERSION DATE"), the holder
                           thereof shall (A) transmit by facsimile (or otherwise
                           deliver), for receipt on or prior to 11:59 p.m.,
                           Eastern Time on such date, a copy of a fully executed
                           notice of conversion in the form attached hereto as
                           EXHIBIT I (the "CONVERSION NOTICE"), to the Company
                           or its designated transfer agent (the "TRANSFER
                           AGENT") and (B) surrender to a common carrier for
                           delivery to the Company, as soon as practicable
                           following such date, the original certificate(s)
                           representing the Preferred Shares being converted (or
                           an indemnification undertaking reasonably
                           satisfactory to the Company with respect to such
                           shares in the case of their loss, theft or
                           destruction) (the "PREFERRED STOCK CERTIFICATE(S)").

                                    (ii)     COMPANY'S RESPONSE. Upon receipt by
                           the Company of a facsimile copy of a Conversion
                           Notice, the Company shall as soon as practicable, but
                           in any event no later than the next business day,
                           send, via facsimile, a confirmation of receipt of
                           such Conversion Notice to such holder. Upon receipt
                           by the Company of the Preferred Stock Certificate(s)
                           to be converted pursuant to a Conversion Notice, the
                           Company shall, on the next business day following the
                           date of receipt, (I) issue and surrender to a common
                           carrier for overnight delivery to the address
                           specified in the Conversion Notice, a certificate,
                           registered in the 



<PAGE>   15

                           name of the holder or its designee, for the number of
                           shares of Common Stock to which the holder shall be
                           entitled, or (II) credit such aggregate number of
                           shares of Common Stock to which the holder shall be
                           entitled to the holder's or its designee's balance
                           account with The Depository Trust Company. If the
                           number of Preferred Shares represented by the
                           Preferred Stock Certificate(s) submitted for
                           conversion is greater than the number of Preferred
                           Shares being converted, then the Company or Transfer
                           Agent, as the case may be, shall, as soon as
                           practicable and in no event later than two business
                           days after receipt of the Preferred Stock
                           Certificate(s) and at its own expense, issue and
                           deliver to the holder a new Preferred Stock
                           Certificate representing the number of Preferred
                           Shares not converted.

                                    (iii)    DISPUTE RESOLUTION. In the case of 
                           a dispute as to the determination of the Market Price
                           or the arithmetic calculation of the Conversion Rate,
                           the Company shall promptly issue to the holder the
                           number of shares of Common Stock that is not disputed
                           and shall submit the disputed determinations or
                           arithmetic calculations to the holder via facsimile
                           within one business day of receipt of such holder's
                           Conversion Notice. If such holder and the Company are
                           unable to agree upon the determination of the Market
                           Price or arithmetic calculation of the Conversion
                           Rate within one (1) business day of such disputed
                           determination or arithmetic calculation being
                           submitted to the holder, then the Company shall
                           within one (1) business day submit via facsimile (A)
                           the disputed determination of the Market Price to an
                           independent, reputable investment bank or (B) the
                           disputed arithmetic calculation of the Conversion
                           Rate to its independent, outside accountant. The
                           Company shall cause the investment bank or the
                           accountant, as the case may be, to perform the
                           determinations or calculations and notify the Company
                           and the holder of the results no later than
                           forty-eight (48) hours from the time it receives the
                           disputed determinations or calculations. Such
                           investment bank's or accountant's determination or
                           calculation, as the case may be, shall be binding
                           upon all parties absent manifest error.

                                    (iv)     RECORD HOLDER. The person or
                           persons entitled to receive the shares of Common
                           Stock issuable upon a conversion of Preferred Shares
                           shall be treated for all purposes as the record
                           holder or holders of such shares of Common Stock on
                           the Conversion Date.

                                    (v)      COMPANY'S FAILURE TO TIMELY 
                           CONVERT. If within five (5) business days after the
                           Company's or the Transfer Agent's receipt of the
                           Preferred Stock Certificates to be converted the
                           Company shall fail (I) to issue a certificate for the
                           number of shares of Common Stock to which a holder is
                           entitled or to credit the holder's balance account
                           with The Depository Trust Company for such number of
                           shares of Common Stock to which the holder is
                           entitled upon such holder's conversion of 


<PAGE>   16

                           Preferred Shares or (II) to issue a new Preferred
                           Stock Certificate representing the number of
                           Preferred Shares to which such holder is entitled
                           pursuant to Section 2(f)(ii), in addition to all
                           other available remedies which such holder may pursue
                           hereunder and under the Securities Purchase Agreement
                           (including indemnification pursuant to Section 6
                           thereof), the Company shall pay additional damages to
                           such holder on each date after the fifth business day
                           that such conversion or delivery of such Preferred
                           Stock Certificates, as the case may be, is not timely
                           effected in an amount equal to 0.5% of the product of
                           (A) the sum of the number of shares of Common Stock
                           not issued to the holder on a timely basis pursuant
                           to Section 2(f)(ii) and to which such holder is
                           entitled and, in the event the Company has failed to
                           deliver a Preferred Stock Certificate to the holder
                           on a timely basis pursuant to Section 2(f)(ii), the
                           number of shares of Common Stock issuable upon
                           conversion of the Preferred Shares represented by
                           such Preferred Stock Certificate, as of the last
                           possible date which the Company could have issued
                           such Preferred Stock Certificate to such holder
                           without violating Section 2(f)(ii) and (B) the
                           Closing Sale Price of the Common Stock on the last
                           possible date which the Company could have issued
                           such Common Stock and the Preferred Stock
                           Certificate, as the case may be, to such holder
                           without violating Section 2(f)(ii). In addition to
                           the foregoing, if for any reason a holder has not
                           received all of the shares of Common Stock prior to
                           the tenth (10th) business day after the expiration of
                           the share delivery period with respect to a
                           conversion of Preferred Shares, then the Fixed
                           Conversion Price in respect of any Preferred Shares
                           held by such holder (including Preferred Shares
                           submitted for conversion, but for which shares of
                           Common Stock have not been issued to such holder)
                           shall thereafter be the lesser of (i) the Fixed
                           Conversion Price on the Conversion Date specified in
                           the Conversion Notice which resulted in the
                           Conversion Failure 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. The Fixed Conversion Price shall
                           thereafter be subject to further adjustment for any
                           other events described in this Section 2. If the
                           Company fails to pay the additional damages set forth
                           in this Section 2(g)(v) within five (5) business days
                           of the date incurred, then the holder entitled to
                           such payments shall have the right at any time, so
                           long as the Company continues to fail to make such
                           payments, to require the Company upon written notice,
                           to immediately issue, in lieu of the cash additions
                           damages set forth in this Section 2(g)(v), the number
                           of shares of Common Stock equal to the quotient of
                           (X) the aggregate amount of the additional damages
                           payments described above divided by (Y) the
                           Conversion Price in effect on such Conversion Date 



<PAGE>   17

                           as is specified by the holder in writing to the
                           Company

                           (h)      MANDATORY CONVERSION AT MATURITY. If any 
                  Preferred Shares remain outstanding on the Maturity Date (as
                  defined below), then all such Preferred Shares shall be
                  converted as of such date in accordance with this Section 2 as
                  if the holders of such Preferred Shares had given the
                  Conversion Notice on the Maturity Date; provided, however,
                  that if a Triggering Event (other than a Triggering Event
                  resulting from the Section 3(d)(vi) due to the Company's
                  breach of a representation) has occurred and is continuing on
                  the Maturity Date, then the Company shall, within five
                  business days following the Maturity Date (unless otherwise
                  notified in writing by the holder of its request to have the
                  Preferred Shares converted into Common Stock), pay to each
                  holder of Preferred Shares then outstanding, in immediately
                  available funds, an amount equal to the Triggering Event
                  Redemption Price as of the Maturity Date. All holders of
                  Preferred Shares shall thereupon surrender all Preferred Stock
                  Certificates, duly endorsed for cancellation, to the Company
                  or the Transfer Agent, provided that the Company has complied
                  with its obligations under this Section 2(g). Notwithstanding
                  the foregoing, if the Common Stock is not designated for
                  quotation or listed on the Principal Market but such event
                  does not constitute Triggering Event, then the Mandatory
                  Conversion Date shall be extended until the Common Stock is so
                  designated or listed. "MATURITY DATE" means the date which is
                  four years after the applicable Issuance Date for the
                  Preferred Shares.

                           (i)      FRACTIONAL SHARES. The Company shall not 
                  issue any fraction of a share of Common Stock upon any
                  conversion. All shares of Common Stock (including fractions
                  thereof) issuable upon conversion of more than one Preferred
                  Share by a holder thereof shall be aggregated for purposes of
                  determining whether the conversion would result in the
                  issuance of a fraction of a share of Common Stock. If, after
                  the aforementioned aggregation, the issuance would result in
                  the issuance of a fraction of a share of Common Stock, the
                  Company shall round such fraction of a share of Common Stock
                  up or down to the nearest whole share.

                           (j)      TAXES. The Company shall pay any and all 
                  taxes that may be payable with respect to the issuance and
                  delivery of Common Stock upon the conversion of Preferred
                  Shares.

         (3)      REDEMPTION AT OPTION OF HOLDERS.

                  (a)      REDEMPTION OPTION UPON MAJOR TRANSACTION. In addition
         to all other rights of the holders of Preferred Shares contained
         herein, simultaneous with or after the occurrence of a Major
         Transaction (as defined below), each holder of Preferred 



<PAGE>   18

         Shares shall have the right, at such holder's option, to require the
         Company to redeem all or a portion of such holder's Preferred Shares at
         a price per Preferred Share equal to the greater of (i) 130% of the
         Liquidation Value (as defined in Section 8) and (ii) the product of (A)
         the Conversion Rate on the date the Notice of Redemption at Option of
         Buyer Upon Major Transaction is given and (B) the Closing Sale Price on
         the date of the public announcement of such Major Transaction or the
         next date on which the exchange or market on which the Common Stock is
         traded is open if such public announcement is made (X) after 12:00
         p.m., Central Time, time on such date or (Y) on a date on which the
         exchange or market on which the Common Stock is traded is closed
         ("MAJOR TRANSACTION REDEMPTION PRICE").

                  (b)      REDEMPTION OPTION UPON TRIGGERING EVENT. In addition 
         to all other rights of the holders of Preferred Shares contained
         herein, simultaneous with or after the occurrence of a Triggering Event
         (as defined below), each holder of Preferred Shares shall have the
         right, at such holder's option, to require the Company to redeem all or
         a portion of such holder's Preferred Shares at a price per Preferred
         Share equal to the greater of (i) 130% of the Liquidation Value and
         (ii) the product of (A) the Conversion Rate on the date of such
         holder's delivery of a Notice of Redemption at Option of Holder Upon
         Triggering Event (as defined below) and (B) the greater of (I) the
         Closing Sale Price on the trading day immediately preceding such
         Triggering Event or (II) the Closing Sale Price on the date of the
         holder's delivery to the Company of a Notice of Redemption at Option of
         Holder Upon Triggering Event (as defined below) or, if such date of
         delivery is not a trading day, the next date on which the exchange or
         market on which the Common Stock is traded is open ("TRIGGERING EVENT
         REDEMPTION PRICE" and, collectively with "MAJOR TRANSACTION REDEMPTION
         PRICE," the "REDEMPTION PRICE").

                  (c)      "MAJOR TRANSACTION". A "MAJOR TRANSACTION" shall be 
         deemed to have occurred at such time as any of the following events:

                           (i)      the consolidation, merger or other business
                  combination of the Company with or into another Person (other
                  than pursuant to a migratory merger effected solely for the
                  purpose of changing the jurisdiction of incorporation of the
                  Company);

                           (ii)     the sale or transfer of all or substantially
                  all of the Company's assets; or

                           (iii)    a purchase, tender or exchange offer made to
                  and accepted by the holders of more than 40% of the
                  outstanding shares of Common Stock.

                  (d)      "TRIGGERING EVENT". A "TRIGGERING EVENT" shall be 
         deemed to have occurred at such time as any of the following events:


<PAGE>   19

                           (i)      the failure of the Registration Statement to
                  be declared effective by the SEC on or prior to the date that
                  is 120 days after the Issuance Date to which such Registration
                  Statement is related;

                           (ii)     while the Registration Statement is required
                  to be maintained effective pursuant to the terms of the
                  Registration Rights Agreement, the effectiveness of the
                  Registration Statement lapses for any reason (including,
                  without limitation, the issuance of a stop order) or is
                  unavailable to the holder of the Preferred Shares for sale of
                  the Registrable Securities (as defined in the Registration
                  Rights Agreement) in accordance with the terms of the
                  Registration Rights Agreement, and such lapse or
                  unavailability continues for a period of at least ten
                  consecutive days or for an aggregate of at least twenty days
                  in any 180 day period;

                           (iii)    the suspension from trading or quotation or
                  failure of the Common Stock to be listed or quoted on the
                  Principal Market for a period of five consecutive days or for
                  an aggregate of at least ten days in any 365 day period;


<PAGE>   20



                           (iv)     the Company's notice to any holder of
                  Preferred Shares, including by way of public announcement, at
                  any time, of its intention not to comply with requests for
                  conversion of any Preferred Shares into shares of Common
                  Stock, including due to any of the reasons set forth in
                  Section 4(a), or the Company's failure to deliver Conversion
                  Shares within ten days of the Conversion Date;

                           (v)      upon the Company's receipt of a Conversion
                  Notice, the Company shall not be obligated to issue the
                  Conversion Shares due to the provisions of Section 11;

                           (vi)     any representation or warranty by the 
                  Company was not true and correct at the time made (including
                  the Issuance Date) or the Company breaches any covenant or
                  other term or condition of the Securities Purchase Agreement,
                  the Registration Rights Agreement, this Certificate of
                  Designations, the Irrevocable Transfer Agent Instructions (as
                  defined in the Securities Purchase Agreement), or any other
                  agreement, document, certificate or other instrument delivered
                  in connection with the transactions contemplated thereby or
                  hereby, except (i) to the extent that such breach would not
                  have a Material Adverse Effect (as defined in Section 3(a) of
                  the Securities Purchase Agreement) or would materially impair
                  the value of the Preferred Shares (it being agreed and
                  acknowledged that the breach of the covenant contained in
                  Section 4(f) of the Purchase Agreement will be deemed to
                  materially impair the value of the Preferred Shares), and (ii)
                  in the case of a breach of a covenant which is curable, such
                  breach continues for a period of less than ten days; or

                           (vii)    the Company's shareholders fail to approve
                  the proposals contemplated by Section 4(j) of the Securities
                  Purchase Agreement on or before the earlier of the first
                  meeting of the Company's shareholders after the initial
                  Issuance Date and 120 days after the initial Issuance Date.

                  (e)      MECHANICS OF REDEMPTION AT OPTION OF HOLDER UPON 
         MAJOR TRANSACTION. No sooner than fifteen days nor later than ten days
         prior to the consummation of a Major Transaction, but not prior to the
         public announcement of such Major Transaction, the Company shall
         deliver written notice thereof via facsimile and overnight courier (a
         "NOTICE OF MAJOR TRANSACTION") to each holder of Preferred Shares. At
         any time after receipt of a Notice of Major Transaction (or, in the
         event a Notice of Major Transaction is not delivered at least ten days
         prior to a Major Transaction, at any time on or after the date which is
         ten days prior to a Major Transaction), any holder of the Preferred
         Shares then outstanding may require the Company to redeem all or a
         portion of the holder's Preferred Shares, which redemption shall be
         effective concurrent with the consummation of the Major Transaction,
         then outstanding by delivering written notice thereof via facsimile and
         overnight courier (a 


<PAGE>   21
         "NOTICE OF REDEMPTION AT OPTION OF HOLDER UPON MAJOR TRANSACTION") to
         the Company, which Notice of Redemption at Option of Holder Upon Major
         Transaction shall indicate (i) the number of Preferred Shares that such
         holder is submitting for redemption and (ii) the applicable Major
         Transaction Redemption Price, as calculated pursuant to Section 3(a).

                  (f)      MECHANICS OF REDEMPTION AT OPTION OF HOLDER UPON
         TRIGGERING EVENT. Within one business day after the occurrence of a
         Triggering Event, the Company shall deliver written notice thereof via
         facsimile and overnight courier (a "NOTICE OF TRIGGERING EVENT") to
         each holder of Preferred Shares. At any time after the earlier of a
         holder's receipt of a Notice of Triggering Event and such holder
         becoming aware of a Triggering Event, any holder of the Preferred
         Shares then outstanding may require the Company to redeem all or a
         portion of the holder's Preferred Shares then outstanding by delivering
         written notice thereof via facsimile and overnight courier (a "NOTICE
         OF REDEMPTION AT OPTION OF HOLDER UPON TRIGGERING EVENT") to the
         Company, which Notice of Redemption at Option of Holder Upon Triggering
         Event shall indicate (i) the number of Preferred Shares that such
         holder is submitting for redemption and (ii) the applicable Triggering
         Event Redemption Price, as calculated pursuant to Section 3(b).

                  (g)      PAYMENT OF REDEMPTION PRICE. Upon the Company's
         receipt of a Notice(s) of Redemption at Option of Holder Upon
         Triggering Event or a Notice(s) of Redemption at Option of Holder Upon
         Major Transaction from any holder of Preferred Shares, the Company
         shall immediately notify each holder of Preferred Shares by facsimile
         of the Company's receipt of such Notice(s) of Redemption at Option of
         Holder Upon Triggering Event or Notice(s) of Redemption at Option of
         Holder Upon Major Transaction and each holder which has sent such a
         notice shall promptly submit to the Company or its Transfer Agent such
         holder's Preferred Stock Certificates which such holder has elected to
         have redeemed. The Company shall deliver the applicable Triggering
         Event Redemption Price, in the case of a redemption pursuant to Section
         3(f), to such holder within five business days after the Company's
         receipt of a Notice of Redemption at Option of Holder Upon Triggering
         Event and, in the case of a redemption pursuant to Section 3(e), the
         Company shall deliver the applicable Major Transaction Redemption Price
         concurrent with the consummation of the Major Transaction; provided
         that a holder's Preferred Stock Certificates shall have been so
         delivered to the Company; and provided further that if the Company is
         unable to redeem all of the Preferred Shares to be redeemed, the
         Company shall redeem an amount from each holder of Preferred Shares
         being redeemed equal to such holder's pro rata amount (based on the
         number of Preferred Shares held by such holder relative to the number
         of Preferred Shares outstanding) of all Preferred Shares being
         redeemed. If the Company shall fail to redeem all of the Preferred
         Shares submitted for redemption in addition to any remedy such holder
         of Preferred Shares may have under this Certificate of Designations,
         the Securities Purchase Agreement and the Registration Rights
         Agreement, the applicable Redemption Price payable in respect of such

<PAGE>   22

         unredeemed Preferred Shares shall bear interest at the rate of 2.5% per
         month (prorated for partial months) until paid in full. Until the
         Company pays such unpaid applicable Redemption Price in full to a
         holder of Preferred Shares submitted for redemption, such holder shall
         have the option (the "VOID OPTIONAL REDEMPTION OPTION") to, in lieu of
         redemption, require the Company to promptly return to such holder(s)
         all of the Preferred Shares that were submitted for redemption by such
         holder(s) under this Section 3 and for which the applicable Redemption
         Price has not been paid, by sending written notice thereof to the
         Company via facsimile (the "VOID OPTIONAL REDEMPTION NOTICE"). Upon the
         Company's receipt of such Void Optional Redemption Notice(s) and prior
         to payment of the full applicable Redemption Price to such holder, (i)
         the Notice(s) of Redemption at Option of Holder Upon Triggering Event
         or the Notice(s) of Redemption at Option of Holder Upon Major
         Transaction, as the case may be, shall be null and void with respect to
         those Preferred Shares submitted for redemption and for which the
         applicable Redemption Price has not been paid, (ii) the Company shall
         immediately return any Preferred Shares submitted to the Company by
         each holder for redemption under this Section 3(g) and for which the
         applicable Redemption Price has not been paid, (iii) the Fixed
         Conversion Price of such returned Preferred Shares shall be adjusted to
         the lesser of (A) the Fixed Conversion Price in effect on the date on
         which the Void Optional Redemption Notice(s) is delivered to the
         Company and (B) the lowest Closing Bid Price during the period
         beginning on the date on which the Notice(s) of Redemption of Option of
         Buyer Upon a Major Transaction or the Notice(s) of Redemption at Option
         of Buyer Upon Triggering Event, as the case may be, is delivered to the
         Company and ending on the date which the Void Optional Redemption
         Notice is delivered to the Company; provided that no adjustment shall
         be made if such adjustment would result in an increase of the Fixed
         Conversion Price then in effect, (iv) the Conversion Percentage in
         effect at such time shall be reduced by a number of percentage points
         equal to the product of (A).50 and (B) the number of days in the period
         beginning on the date which is the last date on which the Triggering
         Event Redemption Price or Major Transaction Redemption Price, as the
         case may be, is required to be delivered in accordance with the
         foregoing provisions of this Section 3(g) and ending on the date on
         which the Void Optional Redemption Notice(s) is delivered to the
         Company and (v) if the redemption was caused by a Triggering Event
         involving the Company's inability to issue Conversion Shares because of
         the Exchange Cap (as defined in Section 11), the holders of at least
         two-thirds of the Preferred Shares then outstanding, including
         Preferred Shares submitted for redemption pursuant to this Section 3
         with respect to which the applicable Redemption Price has not been
         paid, may direct the Company to immediately delist the Common Stock
         from the exchange or automated quotation system on which the Common
         Stock is traded and have the Common Stock, at such holders' option,
         traded in the electronic bulletin board or the "pink sheets."
         Notwithstanding the foregoing, in the event of a dispute as to the
         determination of the Closing Sale Price or the arithmetic calculation
         of the Redemption Price, such dispute shall be resolved pursuant to
         Section 2(f)(iii) above with the term "Closing Sale Price" being
         substituted for the term "Market Price" and the term "Redemption Price"
         being substituted for the term "Conversion Rate". A holder's delivery
         of a Void Optional Redemption Notice and exercise of its rights
         following such notice shall not effect the Company's obligations to
         make any payments which have 


<PAGE>   23

         accrued prior to the date of such notice. Payments provided for in this
         Section 3 shall have priority to payments to other stockholders in
         connection with a Major Transaction.

         (4)      INABILITY TO FULLY CONVERT.

                  (a)      HOLDER'S OPTION IF COMPANY CANNOT FULLY CONVERT.  If,
         upon the Company's receipt of a Conversion Notice or on the Maturity
         Date, the Company cannot issue shares of Common Stock registered for
         resale under the Registration Statement (or which are exempt from the
         registration requirements under the 1933 Act pursuant to Rule 144(k)
         under the 1933 Act) for any reason, including, without limitation,
         because the Company (x) does not have a sufficient number of shares of
         Common Stock authorized and available, (y) is otherwise prohibited by
         applicable law or by the rules or regulations of any stock exchange,
         interdealer quotation system or other self-regulatory organization with
         jurisdiction over the Company or its Securities, including without
         limitation the Exchange Cap (as defined below), from issuing all of the
         Common Stock which is to be issued to a holder of Preferred Shares
         pursuant to a Conversion Notice or (z) fails to have a sufficient
         number of shares of Common Stock registered for resale under the
         Registration Statement, then the Company shall issue as many shares of
         Common Stock as it is able to issue in accordance with such holder's
         Conversion Notice and pursuant to Section 2(f) and, with respect to the
         unconverted Preferred Shares, the holder, solely at such holder's
         option, can elect to:

                           (i)      require the Company to redeem from such
                  holder those Preferred Shares for which the Company is unable
                  to issue Common Stock in accordance with such holder's
                  Conversion Notice ("MANDATORY REDEMPTION") at a price per
                  Preferred Share (the "MANDATORY REDEMPTION PRICE") equal to
                  the Triggering Event Redemption Price as of such Conversion
                  Date;

                           (ii)     if the Company's inability to fully convert
                  Preferred Shares is pursuant to Section 4(a)(z), require the
                  Company to issue restricted shares of Common Stock in
                  accordance with such holder's Conversion Notice and pursuant
                  to Section 2(f);

                           (iii)    void its Conversion Notice and retain or
                  have returned, as the case may be, the nonconverted Preferred
                  Shares that were to be converted pursuant to such holder's
                  Conversion Notice (provided that a holder's voiding its
                  Conversion Notice shall not effect the Company's obligations
                  to make any payments which have accrued prior to the date of
                  such notice); or

                           (iv)     if the Company's inability to fully convert
                  Preferred Shares is pursuant to Section 4(a)(y), require the
                  Company to issue shares of Common Stock in accordance with
                  such holder's Conversion Notice and pursuant to Section 2(f)
                  at a Conversion Price equal to the average of the Closing Sale
                  Prices of the Common Stock on the five consecutive trading
                  days immediately 


<PAGE>   24


         preceding such holder's Notice in Response to Inability to Convert (as
         defined below).

                  (b)      MECHANICS OF FULFILLING HOLDER'S ELECTION. The
         Company shall immediately send via facsimile to a holder of Preferred
         Shares, upon receipt of a facsimile copy of a Conversion Notice from
         such holder which cannot be fully satisfied as described in Section
         4(a), a notice of the Company's inability to fully satisfy such
         holder's Conversion Notice (the "INABILITY TO FULLY CONVERT NOTICE").
         Such Inability to Fully Convert Notice shall indicate (i) the reason
         why the Company is unable to fully satisfy such holder's Conversion
         Notice, (ii) the number of Preferred Shares which cannot be converted
         and (iii) the applicable Mandatory Redemption Price. Such holder shall
         notify the Company of its election pursuant to Section 4(a) above by
         delivering written notice via facsimile to the Company ("NOTICE IN
         RESPONSE TO INABILITY TO CONVERT").

                  (c)      PAYMENT OF MANDATORY REDEMPTION PRICE. If such holder
         shall elect to have its shares redeemed pursuant to Section 4(a)(i),
         the Company shall pay the Mandatory Redemption Price in cash to such
         holder within five (5) days of the Company's receipt of the holder's
         Notice in Response to Inability to Convert. If the Company shall fail
         to pay the applicable Mandatory Redemption Price to such holder on a
         timely basis as described in this Section 4(c) (other than pursuant to
         a dispute as to the determination of the arithmetic calculation of the
         Redemption Price), in addition to any remedy such holder of Preferred
         Shares may have under this Certificate of Designations, the Securities
         Purchase Agreement and the Registration Rights Agreement, such unpaid
         amount shall bear interest at the rate of 2.5% per month (prorated for
         partial months) until paid in full. Until the full Mandatory Redemption
         Price is paid in full to such holder, such holder may void the
         Mandatory Redemption with respect to those Preferred Shares for which
         the full Mandatory Redemption Price has not been paid and (i) receive
         back such Preferred Shares and (ii) the Fixed Conversion Price of such
         returned Preferred Shares shall be adjusted to the lesser of (A) the
         Fixed Conversion Price as in effect on the date on which the holder
         voided the Mandatory Redemption and (B) the lowest Closing Bid Price
         during the period beginning on the Conversion Date and ending on the
         date the holder voided the Mandatory Redemption. Notwithstanding the
         foregoing, if the Company fails to pay the applicable Mandatory
         Redemption Price within such five (5) days time period due to a dispute
         as to the determination of the Mandatory Redemption Price, such dispute
         shall be resolved pursuant to Section 2(f)(iii) with the term
         "MANDATORY REDEMPTION PRICE" being substituted for the term "Conversion
         Rate".

                  (d)      PRO-RATA CONVERSION AND REDEMPTION. In the event the
         Company receives a Conversion Notice, Notice of Redemption at Option of
         Holder Upon Major Transaction or Notice of Redemption at Option of
         Holder Upon Triggering Event from more than one holder of Preferred
         Shares on the same day and the Company can convert and/or redeem some,
         but not all, of the Preferred Shares pursuant to this Section 4, the
         Company shall convert and/or redeem from each holder of Preferred
         Shares electing to have Preferred Shares converted and redeemed at such
         time an 




<PAGE>   25

         amount equal to such holder's pro-rata amount (based on the number of
         Preferred Shares held by such holder relative to the number of
         Preferred Shares outstanding) of all Preferred Shares being converted
         and redeemed at such time.

         (5)      REISSUANCE OF CERTIFICATES. In the event of a conversion or
redemption pursuant to this Certificate of Designations of less than all of the
Preferred Shares represented by a particular Preferred Stock Certificate, the
Company shall promptly cause to be issued and delivered to the holder of such
Preferred Shares a preferred stock certificate representing the remaining
Preferred Shares which have not been so converted or redeemed.

         (6)      RESERVATION OF SHARES. The Company shall, so long as any of
the Preferred Shares are outstanding, reserve and keep available out of its
authorized and unissued Common Stock, solely for the purpose of effecting the
conversion of the Preferred Shares, such number of shares of Common Stock as
shall from time to time be sufficient to effect the conversion of all of the
Preferred Shares then outstanding (without regard to any limitations on
conversions); provided that the number of shares of Common Stock so reserved
shall at no time be less than 200% of the number of shares of Common Stock for
which the Preferred Shares are at any time convertible. The initial number of
shares of Common Stock reserved for conversions of the Preferred Shares and each
increase in the number of shares so reserved shall be allocated pro rata among
the holders of the Preferred Shares based on the number of Preferred Shares held
by each holder at the time of issuance of the Preferred Shares or increase in
the number of reserved shares, as the case may be. In the event a holder shall
sell or otherwise transfer any of such holder's Preferred Shares, each
transferee shall be allocated a pro rata portion of the number of reserved
shares of Common Stock reserved for such transferor. Any shares of Common Stock
reserved and which remain allocated to any person or entity which does not hold
any Preferred Shares shall be allocated to the remaining holders of Preferred
Shares, pro rata based on the number of Preferred Shares then held by such
holder.

         (7)      VOTING RIGHTS. Holders of Preferred Shares shall have no
voting rights, except as required by law, including but not limited to the MBCL,
and as expressly provided in this Certificate of Designations.

         (8)      LIQUIDATION, DISSOLUTION, WINDING-UP. In the event of any
voluntary or involuntary liquidation, dissolution or winding up of the Company,
the holders of the Preferred Shares shall be entitled to receive in cash out of
the assets of the Company, whether from capital or from earnings available for
distribution to its stockholders (the "PREFERRED FUNDS"), before any amount
shall be paid to the holders of any of the capital stock of the Company of any
class junior in rank to the Preferred Shares in respect of the preferences as to
the distributions and payments on the liquidation, dissolution and winding up of
the Company, an amount per Preferred Share equal to the sum of (i) $1,000 and
(ii) an amount equal to the product of (.06) (N/365) ($1,000) (such sum being
referred to as the "LIQUIDATION VALUE"); provided that, if the Preferred Funds
are insufficient to pay the full amount due to the holders of Preferred Shares
and holders of shares of other classes or series of preferred stock of the
Company that are of equal rank with the Preferred Shares as to payments of
Preferred Funds (the "PARI PASSU SHARES"), then each holder of Preferred Shares
and Pari Passu Shares shall receive a percentage of the Preferred Funds equal to
the full amount of Preferred Funds 


<PAGE>   26

payable to such holder as a liquidation preference, in accordance with their
respective Certificate of Designations, as a percentage of the full amount of
Preferred Funds payable to all holders of Preferred Shares and Pari Passu
Shares. The purchase or redemption by the Company 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 Company. Neither the consolidation
or merger of the Company with or into any other Person, nor the sale or transfer
by the Company 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
Company. No holder of Preferred Shares shall be entitled to receive any amounts
with respect thereto upon any liquidation, dissolution or winding up of the
Company other than the amounts provided for herein; provided that a holder of
Preferred Shares shall be entitled to all amounts previously accrued with
respect to amounts owed hereunder.

         (9)      PREFERRED RANK; PARTICIPATION.

                  (a)      All shares of Common Stock shall be of junior rank to
         all Preferred Shares in respect to the preferences as to distributions
         and payments upon the liquidation, dissolution and winding up of the
         Company. The rights of the shares of Common Stock shall be subject to
         the preferences and relative rights of the Preferred Shares. Without
         the prior express written consent of the holders of not less than
         two-thirds (2/3) of the then outstanding Preferred Shares, the Company
         shall not hereafter authorize or issue additional or other capital
         stock that is of senior or equal rank to the Preferred Shares in
         respect of the preferences as to distributions and payments upon the
         liquidation, dissolution and winding up of the Company. Without the
         prior express written consent of the holders of not less than
         two-thirds (2/3) of the then outstanding Preferred Shares, the Company
         shall not hereafter authorize or make any amendment to the Company's
         Restated Articles of Organization or bylaws, or file any resolution of
         the board of directors of the Company with the Secretary of State of
         The Commonwealth of Massachusetts containing any provisions, which
         would adversely affect or otherwise impair the rights or relative
         priority of the holders of the Preferred Shares relative to the holders
         of the Common Stock or the holders of any other class of capital stock.
         In the event of the merger or consolidation of the Company with or into
         another corporation, the Preferred Shares shall maintain their relative
         powers, designations and preferences provided for herein and no merger
         shall result inconsistent therewith.

                  (b)      Subject to the rights of the holders, if any, of the
         Pari Passu Shares, the holders of the Preferred Shares shall, as
         holders of Preferred Stock, be entitled to such dividends paid and
         distributions made to the holders of Common Stock to the same extent as
         if such holders of Preferred Shares had converted the Preferred Shares
         into Common Stock (without regard to any limitations on conversion
         herein or elsewhere) and had held such shares of Common Stock on the
         record date for such dividends and distributions. Payments under the
         preceding sentence shall be made concurrently with 


<PAGE>   27

         the dividend or distribution to the holders of Common Stock.

         (10)     RESTRICTION ON REDEMPTION AND CASH DIVIDENDS WITH RESPECT TO
OTHER CAPITAL STOCK. Until all of the Preferred Shares have been converted or
redeemed as provided herein, the Company shall not, directly or indirectly,
redeem, or declare or pay any cash dividend or distribution on, its Common Stock
without the prior express written consent of the holders of not less than
two-thirds (2/3) of the then outstanding Preferred Shares.

         (11)     LIMITATION ON NUMBER OF CONVERSION SHARES. Notwithstanding any
other provision herein, the Company shall not be obligated to issue any shares
of Common Stock upon conversion of the Preferred Shares if the issuance of such
shares of Common Stock would exceed 4,094,894 (the "EXCHANGE CAP") without
breaching the Company's obligations under the rules or regulations, of the
Principal Market requiring the approval of the Company's stockholders for the
issuance of a certain number of shares of Common Stock, except that such
limitation shall not apply in the event that the Company (i) obtains the
approval of its stockholders as required by applicable rules and regulations, of
the Principal Market for issuances of Common Stock in excess of the Exchange Cap
or (ii) obtains a written opinion from outside counsel to the Company that such
approval is not required, which opinion shall be reasonably satisfactory to the
holders of a majority of the Preferred Shares then outstanding. To the extent
that the above limitation is applicable to the Company, until such approval or
written opinion is obtained, no purchaser of Preferred Shares pursuant to the
Securities Purchase Agreement (the "PURCHASERS") shall be issued, upon
conversion of Preferred Shares, shares of Common Stock in an amount greater than
the product of (x) the Exchange Cap amount multiplied by (y) a fraction, the
numerator of which is the number of Preferred Shares issued to such Purchaser
pursuant to the Securities Purchase Agreement and the denominator of which is
the aggregate amount of all the Preferred Shares issued to the Purchasers
pursuant to the Securities Purchase Agreement (the "CAP ALLOCATION AMOUNT"). In
the event that any Purchaser shall sell or otherwise transfer any of such
Purchaser's Preferred Shares, the transferee shall be allocated a pro rata
portion of such Purchaser's Cap Allocation Amount. In the event that any holder
of Preferred Shares shall convert all of such holder's Preferred Shares into a
number of shares of Common Stock which, in the aggregate, is less than such
holder's Cap Allocation Amount, then the difference between such holder's Cap
Allocation Amount and the number of shares of Common Stock actually issued to
such holder shall be allocated to the respective Cap Allocation Amounts of the
remaining holders of Preferred Shares on a pro rata basis in proportion to the
number of Preferred Shares then held by each such holder.

         (12)     VOTE TO CHANGE THE TERMS OF OR ISSUE PREFERRED SHARES. The
affirmative vote at a meeting duly called for such purpose or the written
consent without a meeting, of the holders of not less than two-thirds (2/3) of
the then outstanding Preferred Shares, shall be required for (a) any change to
this Certificate of Designations or the Company's Restated Articles of
Organization which would amend, alter, change or repeal any of the powers,
designations, preferences and rights of the Preferred Shares, or (b) any
issuance of Preferred Shares other than pursuant to the Securities Purchase
Agreement.

         (13)     LOST OR STOLEN CERTIFICATES. Upon receipt by the Company of
evidence satisfactory to the Company of the loss, theft, destruction or
mutilation of any Preferred Stock Certificates representing the Preferred
Shares, and, in the case of loss, theft or destruction, of 


<PAGE>   28

an indemnification undertaking by the holder to the Company and, in the case of
mutilation, upon surrender and cancellation of the Preferred Stock
Certificate(s), the Company shall execute and deliver new preferred stock
certificate(s) of like tenor and date; provided, however, the Company shall not
be obligated to re-issue preferred stock certificates if the holder
contemporaneously requests the Company to convert such Preferred Shares into
Common Stock.

         (14)     REMEDIES, CHARACTERIZATIONS, OTHER OBLIGATIONS, BREACHES AND
INJUNCTIVE RELIEF. The remedies provided in this Certificate of Designations
shall be cumulative and in addition to all other remedies available under this
Certificate of Designations, at law or in equity (including a decree of specific
performance and/or other injunctive relief), no remedy contained herein shall be
deemed a waiver of compliance with the provisions giving rise to such remedy and
nothing herein shall limit a holder's right to pursue actual damages for any
failure by the Company to comply with the terms of this Certificate of
Designations. The Company covenants to each holder of Preferred Shares that
there shall be no characterization concerning this instrument other than as
expressly provided herein. Amounts set forth or provided for herein with respect
to payments, conversion and the like (and the computation thereof) shall be the
amounts to be received by the holder thereof and shall not, except as expressly
provided herein, be subject to any other obligation of the Company (or the
performance thereof). The Company acknowledges that a breach by it of its
obligations hereunder will cause irreparable harm to the holders of the
Preferred Shares and that the remedy at law for any such breach may be
inadequate. The Company therefore agrees that, in the event of any such breach
or threatened breach, the holders of the Preferred Shares 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.

         (15)     SPECIFIC SHALL NOT LIMIT GENERAL; CONSTRUCTION. No specific
provision contained in this Certificate of Designations shall limit or modify
any more general provision contained herein. This Certificate of Designations
shall be deemed to be jointly drafted by the Company and the initial holders of
the Preferred Shares and shall not be construed against any person as the
drafter hereof.

         (16)     FAILURE OR INDULGENCE NOT WAIVER. No failure or delay on the
part of a holder of Preferred Shares in the exercise of any power, right or
privilege hereunder shall operate as a waiver thereof (except to the extent that
such power, right or privilege must, in accordance with the terms of this
Certificate of Designations, be exercised within a specified period of time and
such period of time has lapsed without such power, right or privilege being
exercised), 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.

         (17)     NOTICES. Any notice required to be delivered pursuant to the
terms of this Certificate of Designations shall be delivered, unless otherwise
provided in these Certificate of Designations, in accordance with the terms, and
subject to the notice provisions of, the Securities Purchase Agreement.



<PAGE>   29


                           ALPHA-BETA TECHNOLOGY, INC.
                                CONVERSION NOTICE

         Reference is made to the Certificate of Designations, Preferences and
Rights, of the Series F Convertible Preferred Stock of Alpha-Beta Technology,
Inc. (the "CERTIFICATE OF DESIGNATIONS"). In accordance with and pursuant to the
Certificate of Designations, the undersigned hereby elects to convert the number
of shares of Series F Convertible Preferred Stock, par value $0.01 per share
(the "PREFERRED SHARES"), of Alpha-Beta Technology, Inc., a Massachusetts
corporation (the "COMPANY"), indicated below into shares of Common Stock, par
value $0.01 per share (the "COMMON STOCK"), of the Company, by tendering the
stock certificate(s) representing the Preferred Shares specified below as of the
date specified below.

         Date of Conversion: ___________________________________________________

         Number of Preferred Shares to be converted: ___________________________

         Stock certificate no(s). of Preferred Shares to be converted: _________

Please confirm the following information:

         Conversion Price: _____________________________________________________

         Number of shares of Common Stock

         to be issued: _________________________________________________________

Please issue the Common Stock into which the Preferred Shares are being
converted and, if applicable, any check drawn on an account of the Company in
the following name and to the following address:

         Issue to:         _____________________________________________________

                           _____________________________________________________

                           _____________________________________________________

         Facsimile Number: _____________________________________________________

         Authorization:    _____________________________________________________

                           By: _________________________________________________


<PAGE>   30

                           Title: ______________________________________________

         Dated:            _____________________________________________________
         Account Number:
          (if electronic book entry transfer): _________________________________

         Transaction Code Number
          (if electronic book entry transfer): _________________________________



<PAGE>   31












SIGNED UNDER THE PENALTIES OF PERJURY, this 21st day of October, 1998
                                            ----        -------    --

/s/ Spiros Jamas                                          *President
- --------------------------------------------------------, 
Spiros Jamas


/s/ Davidson Easson, Jr.                                  *Clerk
- --------------------------------------------------------,
D. Davidson Easson, Jr.

*Delete the inapplicable words.

<PAGE>   32




                       THE COMMONWEALTH OF MASSACHUSETTS

                        CERTIFICATE OF VOTE OF DIRECTORS
                   ESTABLISHING A SERIES OF A CLASS OF STOCK
                    (GENERAL LAWS, CHAPTER 156B, SECTION 26)


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


         I hereby approve the within Certificate of Vote of Directors
         and, the filing fee in the amount of $_______________ having
         been paid, said certificate is deemed to have been filed with
         me this __________ day of ____________________, 19__.



         Effective date:______________________________________________




                             WILLIAM FRANCIS GALVIN
                         Secretary of the Commonwealth







                         TO BE FILED IN BY CORPORATION
                      PHOTOCOPY OF DOCUMENT TO BE SENT TO:

                Robert E. Bishop, Esq.
         -------------------------------------------------------------

                Goodwin, Procter & Hoar LLP
         -------------------------------------------------------------

                Exchange Place, Boston, Massachusetts 02109
         -------------------------------------------------------------

         Telephone:  (617) 570-1000
                    --------------------------------------------------












<PAGE>   1
                                                                     EXHIBIT 4.4


                               SECOND AMENDMENT TO
                          SHAREHOLDER RIGHTS AGREEMENT

         Amendment, dated as of October 21, 1998, to the Shareholder Rights
Agreement dated as of February 2, 1995, as amended on November 13, 1997 (the
"Rights Agreement"), between Alpha-Beta Technology, Inc. (the "Company") and
BankBoston, N.A. f/k/a The First National Bank of Boston, as the rights agent
(the "Rights Agent").

                               W I T N E S S E T H

         WHEREAS, in accordance with the terms of the Rights Agreement, the
Company deems it desirable to make certain amendments to the Rights Agreement;
and

         WHEREAS, Section 27 of the Rights Agreement provides that prior to the
Distribution Date (as defined therein) the Company and the Rights Agent shall,
if the Company so directs, amend or supplement any provision of the Rights
Agreement as the Company may deem necessary or desirable without the approval of
any holders of the Company's common stock.

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements herein set forth the parties hereby agree that the Rights Agreement
is hereby amended as follows (capitalized terms not otherwise defined herein
shall have the respective meanings ascribed to such terms in the Rights
Agreement):

         1.       The first paragraph of Section 1(a) of the Rights Agreement is
amended and restated as follows:

         (a)      "ACQUIRING PERSON" shall mean any Person who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial Owner of 15% or more of the shares of Common Stock then outstanding,
but shall not include (i) the Company, (ii) any Subsidiary of the Company, (iii)
any employee benefit plan or compensation arrangement of the Company or any
Subsidiary of the Company, (iv) any Person holding shares of Common Stock
organized, appointed or established by the Company or any Subsidiary of the
Company for or pursuant to the terms of any such employee benefit plan or
compensation arrangement, or (v) Ross Financial Corporation ("Ross Financial")
and HFTP Investments LLC ("HFTP") (the Persons described in clauses (i) through
(v) above are referred to herein as "Exempt Persons").

         2.       Section 1(b) of the Rights Agreement is amended and restated
as follows:

                  (b) "ADVERSE PERSON" shall mean any Person, other than Ross
Financial and HFTP, declared to be an Adverse Person by the Board of Directors
upon a determination of the Board of Directors that the criteria set forth in
Section 11(a)(ii)(B) apply to such Person.


<PAGE>   2



         3.       Section 3(c) of the Rights Agreement is amended and restated
as follows:

                  (c) Certificates for the Common Stock issued after October 21,
1998, but prior to the earlier of the Distribution Date or the redemption,
expiration or termination of the Rights, shall be deemed also to be certificates
for Rights, and shall bear a legend, substantially in the form set forth below:

                  This certificate also evidences and entitles the holder hereof
                  to certain Rights as set forth in a Shareholder Rights
                  Agreement between Alpha-Beta Technology, Inc. and BankBoston,
                  N.A. f/k/a The First National Bank of Boston, as Rights Agent,
                  dated as of February 2, 1995, as amended from time to time
                  (the "Rights Agreement"), the terms of which are hereby
                  incorporated herein by reference and a copy of which is on
                  file at the principal offices of Alpha-Beta Technology, Inc.
                  Under certain circumstances, as set forth in the Rights
                  Agreement, such Rights will be evidenced by separate
                  certificates and will no longer be evidenced by this
                  certificate. Alpha-Beta Technology, Inc. may redeem the Rights
                  at a redemption price of $0.01 per Right, subject to
                  adjustment, under the terms of the Rights Agreement.
                  Alpha-Beta Technology, Inc. will mail to the holder of this
                  certificate a copy of the Rights Agreement, as in effect on
                  the date of mailing, without charge promptly after receipt of
                  a written request therefor. Under certain circumstances,
                  Rights issued to or held by Acquiring Persons, Adverse Persons
                  or any Affiliates or Associates thereof (as defined in the
                  Rights Agreement), and any subsequent holder of such Rights,
                  may become null and void.

         4.       Section 27 of the Rights Agreement is amended by adding the
following sentence at the end of such Section:

                  Notwithstanding any other provision hereof, the consent of a
Person named in Section 1(a)(v) hereof must be obtained regarding any amendment
of or supplement to this Agreement which at any time could result in such person
becoming an Acquiring Person or being declared an Adverse Person pursuant to the
terms hereof.

         As amended hereby, the Rights Agreement shall continue in full force
and effect in accordance with its terms.


<PAGE>   3



         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
duly executed as of the date first set forth above. This Amendment may be
executed in one or more counterparts all of which shall be considered one and
the same amendment and each of which shall be deemed to be an original.

                                          ALPHA-BETA TECHNOLOGY, INC.


                                          By: /s/ Joseph M. Grimm
                                              ----------------------------------
                                              Name: Joseph M. Grimm
                                              Title: Chief Financial Officer


                                          BANKBOSTON, N.A.


                                          By: /s/ Katherine Anderson
                                              ----------------------------------
                                              Name: Katherine Anderson
                                              Title: Director, Client Services



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