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                               Davox Corporation
              ----------------------------------------------------
                (Name of Registrant as Specified in Its Charter)
                                        
                   
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                               [DAVOX LETTERHEAD]



                                                   May 1, 1998



To:  Institutional Shareholders of Davox Corporation

Re:  Davox Annual Meeting of Stockholders - Stock Plan Amendment

Dear Davox Stockholder:

   It has come to our attention that there is some concern about the amendment
to the Davox Corporation 1996 Stock Plan.  As you recall, Davox is seeking
stockholder approval at its Annual Meeting of Stockholders on May 6, 1998 of an
increase in the number of shares authorized for issuance pursuant to the 1996
Stock Plan from 900,000 shares to 1,950,000 shares.  In our recent discussions
with shareholders it became apparent that there are several misconceptions about
the Plan that we would like to correct.

   1.  THE STOCK PLAN HAS A MINIMUM EXERCISE PRICE FOR NON-QUALIFIED STOCK
OPTIONS.  In response to an institutional shareholder's concern, on April 24,
1997 the Board of Directors of Davox amended the Stock Plan to provide that (a)
no more than ten percent (10%) of the options authorized under the Stock Plan
may be granted with exercise prices below fair market value on the date of grant
and (b) any such below market options cannot have an exercise price less than
85% of the fair market value on the date of grant.

   2.  ISS DOUBLE COUNTS THE SHARES AVAILABLE FOR GRANT UNDER THE STOCK PLAN,
RESULTING IN AN INFLATED "SHAREHOLDER VALUE TRANSFER ("SVT") AMOUNT.  On page 8
of its Proxy Analysis, Institutional Shareholder Services ("ISS") claims that
there are a total of 4,119,501 shares reserved or granted under the Stock Plan.
In fact, there are currently only 3,619,192 shares reserved or granted under the
Stock Plan.  The discrepancy occurs because ISS included some of the "shares
available for grant" in their "shares reserved for plan/amendment" calculation,
resulting in double counting.  An accurate reflection of the current option
situation is as follows:

 
                                                                
   A:  Total options and awards currently outstanding:              2,801,809
   B.  Options and awards available under existing plans:             311,250
   C.  New options and awards under amendment:                      1,050,000
   D.  Options and awards already granted from amendment shares:     (543,867)
                                                                    ---------
         Total options and awards available,
         outstanding and sought:                                    3,619,192
                                                                    =========



Consequently, ISS has over-stated the "shareholder value transfer (SVT)" amount
and the voting power dilution analysis.

   3.  ISS HAS USED AN INCORRECT STANDARD INDUSTRIAL CLASSIFICATION (SIC) CODE.
ISS's recommendation with respect to the Stock Plan Amendment is based in part
on a comparison of other companies in Davox's industry.  However, ISS used an
incorrect SIC Code for Davox (3661 - Telephone and Telegraph Apparatus).  In
July 1995, Davox changed its SIC Code to 7373 - Computer Integrated Systems
Design and filed the necessary paperwork with the Department of Commerce.  We
have requested that ISS recalculate its industry comparison based on an accurate
SIC Code for Davox, and believe the recalculation will result in a more
favorable comparison.

   4.  PROPOSED AMENDMENTS TO THE STOCK PLAN.

   In response to some concerns expressed by certain institutional stockholders,
Davox management is recommending that the Davox Board of Directors approve the
following amendments to the Stock Plan:

          (a) Limit to 10% the number of ISOs under the Stock Plan that may be
     repriced without stockholder approval;

          (b) Provide that non-employee directors shall not be eligible to
     receive any Stock Rights under the Stock Plan; and

          (c) Provide that any amendments to the Stock Plan which provide
     increased benefits under the Stock Plan or which increase the group of
     persons eligible to receive Stock Rights under the Stock Plan shall require
     shareholder approval.

   We hope these proposed amendments to the Stock Plan address all of your
concerns.

   If you require any assistance in voting your shares, or changing your vote,
please call our proxy solicitor, Arthur B. Crozier at Innisfree M&A Incorporated
(212) 750-5833.

 
   Please call me at (978) 952-0213 if you have any questions.  We appreciate
your continued support of Davox.

                                        Very truly yours,

                                        /s/ John J. Connolly

                                        John J. Connolly
                                        Vice President - Finance and
                                        Chief Financial Officer