ZOOM TELEPHONICS INC
10-K, 1997-03-31
TELEPHONE & TELEGRAPH APPARATUS
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                                UNITED STATES
                    SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                  FORM 10-K

[X]      ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
         EXCHANGE ACT OF 1934
                  For the fiscal year ended December 31, 1996
                                                           or
[  ]     TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES
         EXCHANGE ACT OF 1934
           For the transition period from ______________ to ______________
                       Commission File Number 0-18672

                           ZOOM TELEPHONICS, INC.
              (Exact Name of Registrant as Specified in its Charter)

               Canada                                    04-2621506
          (State or Other Jurisdiction of             (I.R.S.Employer
           Incorporation or Organization)          Identification No.)

          207 South Street, Boston, Massachusetts                02111
          ---------------------------------------                -----
          (Address of Principal Executive Offices in the U.S   (Zip Code)

          1200 Royal Center
          1055 West Georgia Street, Vancouver, B.C.             V6E 3P3
          (Address of Principal Executive Offices in Canada)   (Zip Code)

            Registrant's Telephone Number, Including Area Code: (617) 423-1072
            Securities Registered Pursuant to Section 12 (b) of the Act: None
            Securities Registered Pursuant to Section 12 (g) of the Act:

                            Common Stock, No Par Value
                                  (Title of Class)

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

Indicate by a check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation  S-K is not contained  herein,  and will not be contained,  to the
best of registrant's  knowledge,  in definitive proxy or information  statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.
YES  [    ]    NO [ X ]

The aggregate  market value of the Common Stock, No Par Value, of the registrant
held by  non-affiliates  of the  registrant  as of March 26, 1997  (computed  by
reference to the closing price of such stock on The Nasdaq National  Market) was
$65,383,246

The number of shares outstanding of the registrant's Common Stock, No Par Value,
as of March 26, 1997 was 7,472,371 shares.

                          DOCUMENTS INCORPORATED BY REFERENCE

Portions of the Annual Proxy Statement for the registrant's  1997 annual meeting
of  stockholders  to be filed  with the SEC in April  1997 are  incorporated  by
reference into Part III, Items 10-12 of this Form 10-K.


<PAGE>





                                       PART I


ITEM 1 - BUSINESS

Overview

Zoom Telephonics, Inc. ("Zoom" or the "Company"), a Canadian corporation, is the
parent  company  of its wholly  owned  subsidiary,  Zoom  Telephonics,  Inc.,  a
Delaware  corporation with its principal  executive offices located at 207 South
Street,  Boston,  Massachusetts 02111. The discussion of the business of Zoom in
this report  refers to the  business  conducted  through the  operations  of the
United States subsidiary and its subsidiaries.

The Company is a leading designer,  producer and marketer of faxmodems and other
personal  computer  communications  products  for the  home  and  office.  These
products  link  Personal  Computers  ("PCs")  through  the  worldwide  telephone
network,  enabling them to transmit data, fax, voice and video,  and to remotely
access on-line services,  the Internet,  corporate computer networks,  and other
computers.  The  Company  offers  a  broad  line  of  faxmodems  with  top  data
transmission  speeds of 33,600 bps,  available in internal,  external and PCMCIA
models.  Zoom expects to soon begin shipping "56K faxmodems,"  which are able to
download  data at speeds up to 56,000  bps.  The  Company  also  recently  began
shipping its first ISDN (Integrated Services Digital Network) product, which can
transmit and receive  simultaneously at up to 128,000 bps, and also has a number
of distinctive voice and fax capabilities.

Zoom's  objective  is to build  upon  its  position  as a  leading  supplier  of
faxmodems  and to  capitalize  on a number of  current  and  emerging  trends in
computer   connectivity,   including   Internet  access,   computer   telephony,
simultaneous  voice and data  transmission,  video  telephony,  and higher  data
rates.  The  Company  believes  that  the Zoom  name is  widely  recognized  and
associated with high performance per dollar, breadth of product line and product
innovation.

Industry Background

Demand for PC communications products and services has grown significantly.  The
Company  believes  that this  growth  has been  driven by a variety  of  factors
including  (i) the  popularity  of the  Internet  and on-line  services  such as
America Online, CompuServe and the Microsoft Network, (ii) the growing installed
base of PCs,  particularly in the home and mobile settings,  (iii) a significant
increase in the use of PCs for remote  access to  corporate  networks,  and (iv)
advances in  technology,  which have improved the  functionality  of the PC as a
means of transferring,  capturing and manipulating  data-intensive  information,
including  graphic  images and voice.  These trends have resulted in substantial
growth in modem  sales  for both the  installed  base of PCs,  as  upgrades  and
first-time purchases, and for new PCs as bundled peripherals.  Substantially all
modems sold for PCs are now faxmodems  (modems that have the ability to send and
receive faxes),  and many faxmodems have enhanced voice  capabilities  and other
enhanced extra features.

The rapid expansion of on-line  services and the Internet has greatly  increased
the utility of personal computers by making a multitude of information resources
available  to PC users.  Modems  are  commonly  used to  remotely  access  these
resources.  As the transfer of large text files and data-intensive  images (like
those on the World  Wide Web)  become  more  pervasive,  high data  transmission
speeds and other  advanced  modem  features are expected to become  increasingly
important to PC users.

Worldwide PC shipments continue to grow, and industry sources estimate that over
200 million PCs are  installed  worldwide.  The Company  believes that less than
one-third  of  the  worldwide  installed  base  of PCs  has a  modem  with  data
transmission  speeds of 28,000 bps or higher. As a result,  the Company believes
that a substantial  market exists for PC users to upgrade their existing modems,
and that  modems  will  continue  to achieve  increasing  penetration  of the PC
installed base as applications requiring data connectivity proliferate.

The growing use of PCs outside the traditional office setting has also increased
the demand for modems which enable users to remotely access corporate  networks,
the Internet and other PCs. In addition,  notebook  computers have become one of
the fastest growing segments of the PC market.

Advances in modem technology and lower modem prices have created rapid growth in
the installed base of modems. As a result, the high-volume segment of the market
has shifted from modems with a maximum transmission speed of 2400 bps in 1987 to
33,600 bps today. Modems with high data transmission speeds require less time to
transmit  text  files  and  graphics,  thereby  reducing  phone  call  costs and
facilitating  the  use  of  data-intensive  applications  like  World  Wide  Web
browsing,  video  telephony  and  remote  access to  corporate  networks.  Other
technological  advances  that  are  increasing  the use of  modems  in  personal
computing include new voice-related capabilities and new communications software
features.  For example,  voice modems can provide answering machine,  voice mail
and other  voice-related  functions by  digitizing  incoming  voice  signals for
storage in a computer and by retrieving  stored voice and sending it through the
telephone network to a remote person or computer. More advanced voice modems can
be  used  to  transmit  voice  and  data   simultaneously   (voice  over  data),
facilitating two-way  conversations  between computer users working on a project
or playing a computer game in separate locations.  Advances in computer software
are  also  stimulating   demand  for  modems  with  faster  speeds  and  greater
functionality.  For  example,  Microsoft's  Windows 95 includes  remote  access,
faxing and Internet access  capabilities that can only be used with a modem. The
demand for faster  transmission  speeds and  increased  modem  functionality  is
expected to drive sales of new  generations  of modems in the future,  including
56K modems, ISDN and ADSL (Asymmetric Digital Subscriber Line) data devices, and
cable modems, both as upgrades and as peripherals bundled with new PCs.

Zoom Strategy

Zoom focuses on PC communications  products tailored to high-volume  channels of
distribution.  The Company  believes that the Zoom name is associated  with high
performance per dollar, breadth of product line, broad distribution, and product
innovation.  The Company's  objective is to build upon its position as a leading
supplier of  faxmodems  and to  capitalize  on a number of current and  emerging
trends in computer  connectivity,  including  Internet access,  remote access to
corporate   networks,   computer   telephony,   simultaneous   voice   and  data
transmission,  video telephony,  and higher data speeds.  The Company's strategy
includes the following key elements:

Build Upon and Exploit Brand Equity. Zoom has a widely recognized brand name and
established channels of high-volume retailer,  distributor and OEM customers who
buy the Company's  products.  The Company believes that its success has been due
in part to (i)  offering  its  customers a broad range of products  that provide
high performance per dollar, (ii) supporting the installed base of its faxmodems
with multiple  technical  support options,  (iii) promoting its products through
cooperative  advertising  with  its  retailer  customers,   and  (iv)  designing
attractive  and  informative  packaging  for its products.  Personal  Technology
Research  reports  that in January  1997 Zoom brand  modems  have the third most
retail shelf space for modems in North America.  The Company intends to continue
to enhance its brand equity by further expanding its marketing channels base and
by broadening its product offerings through its established sales channels.

Introduce  Innovative  PC  Communications  Products.  Zoom seeks to identify new
high-volume opportunities for PC communications, to develop competitively priced
leading-edge  products  to address  these  opportunities,  and to build upon and
exploit its brand equity by delivering  these products  quickly and  effectively
through  its  established  sales  channels.  The  Company  was one of the  first
high-volume  producers of faxmodems  and voice  faxmodems.  Zoom will soon begin
shipping  internal and external "56K faxmodems," which are able to download data
at speeds up to 56,000 bps; and the Company  expects  "56K" to be a  significant
growth opportunity.  The Company recently began shipping its first ISDN product,
and plans to broaden  its ISDN  product  line in 1997 and  beyond.  The  Company
produces remote access products, and expects to broaden its product offerings in
this area.

Outsource Chipset Technology. Zoom pursues a strategy of outsourcing rather than
internally  developing  its faxmodem  chipsets,  which are  application-specific
integrated  circuits  that  form  the  technology  base  for its  faxmodems.  By
outsourcing  the  chipset  technology,  the Company is able to  concentrate  its
research and  development  resources  on faxmodem  system  design,  leverage the
extensive  research and development  capabilities  of its chipset  suppliers and
reduce its  development  time and  associated  costs and risks.  The Company has
established a strong relationship with Rockwell and is currently  purchasing all
of  its  modem  chipsets  from  Rockwell.   Rockwell  is  the  leading   chipset
manufacturer  and  has  significant   resources  for  semiconductor  design  and
fabrication,  analog and digital signal processing,  and communications firmware
development.



<PAGE>


Maintain Low Costs.  Zoom continually  seeks ways to improve its product designs
and manufacturing  approach in order to reduce its costs. The Company outsources
aspects of its  manufacturing to contract  assemblers as a means of reducing its
labor  costs  and  capital  expenditures,  and of  providing  the  Company  with
flexibility in its capacity planning.

Expand  International  Sales.  Zoom  introduced its first  faxmodems in selected
Western  European  countries  in 1993.  During  1995 the Company  also  received
approvals and began shipping its first  faxmodems for the Japanese  market.  The
Company's international sales (excluding sales to OEMs) increased from 8% of net
sales in 1994 to 19% of net sales in 1996.  The  Company  plans to  continue  to
expand its international  product line and distribution  network, and is seeking
regulatory  approvals for the sale of its products in  additional  international
markets.

Expand OEM Sales. Zoom has been increasing its original  equipment  manufacturer
("OEM") sales and support efforts. As a result, the Company's worldwide sales to
OEM  customers  increased  from 8% of net  sales in 1994 to 19% of net  sales in
1996. The Company  intends to continue to target the OEM market as a significant
opportunity for growth and diversification.

Explore  Acquisitions.  Zoom  acquired the products and certain  other assets of
Tribe  Computer  Works  ("Tribe")  in mid-1996,  and Zoom  continues to consider
acquisitions  of  businesses,  products  or  technologies  complementary  to the
Company's  business.  The Company  believes that  appropriate  acquisitions  can
reduce the development risk associated with new product offerings,  and that the
Company can leverage its brand equity and existing sales channels to enhance the
value  of  these  acquisitions.  There  can be no  assurance  that  any of these
discussions will lead to an acquisition or that any acquisitions,  if made, will
be successful.

Products

Zoom's products link personal computers through the worldwide telephone network,
enabling them to remotely  access  on-line  services,  the  Internet,  corporate
computer  networks,  and other  computers.  The  Company  offers a broad line of
faxmodems with top data transmission  speeds of 33,600 bps. Zoom expects that it
will soon begin shipping internal and external 56K faxmodems,  which are able to
download  data at speeds up to 56,000  bps;  and Zoom  expects  to  continue  to
broaden its line of 56K modems. The Company has also recently begun shipping its
first ISDN  product,  and the Company  expects to continue to introduce new ISDN
products.  Starting with its  acquisition  of Tribe,  the Company began shipping
remote  access  products  which  connect  local area  networks  to the wide area
network and connected computers and networks including the Internet. The Company
also makes other related products, including a series of multi-line modems and a
hub for AppleTalk networks.

Zoom has a broad line of faxmodems with top data speeds of 33,600 bps, available
in internal, external and PCMCIA models. The internal faxmodems are designed for
installation in IBM PC-compatibles.  The external faxmodems are designed to work
with any terminal or computer,  including IBM PC-compatibles,  the Macintosh and
other  computers.  The Company's  external  models  include  desktop and smaller
"pocket" faxmodems.  The PCMCIA faxmodems are designed for use with notebook and
sub-notebook  computers as well as PDAs (personal digital  assistants)  equipped
with standard PCMCIA slots. When sold as packaged retail products, the Company's
faxmodems  are shipped  complete  with  third-party  software  that supports the
hardware capabilities of the faxmodem.

56K faxmodems allow users  connected to standard  phonelines to download data at
speeds  up to  56,000  bps when  communicating  with  compatible  central  sites
connected to digital  lines such as ISDN or T1 lines.  Those  central  sites are
typically online  services,  Internet  Service  Providers,  or remote LAN access
equipment.  56K is a new  technology,  and  there  is no  international  or U.S.
standard.  Instead there are two main competing 56K technologies,  K56flextm and
x2tm.  Zoom' s first 56K modems  will  incorporate  K56flex,  which is backed by
semiconductor   manufacturers   Rockwell  and  Lucent,  central  site  equipment
manufacturers  Ascend,  Cascade,  Cisco,  Microcom,  Shiva,  and  others;  modem
companies Boca,  Diamond,  Hayes,  Motorola,  Zoom, and others;  Compaq and many
other computer  manufacturers,  and hundreds of Internet  Service  Providers and
online  services.  x2 is backed by U.S.  Robotics;  semiconductor  manufacturers
Texas Instruments and Cirrus Logic, some other modem companies,  and a number of
computer manufacturers,  Internet Service Providers,  and online services. Until
standards  are set the market is likely to be confused  and  fragmented.  A U.S.
ANSI 56K standard may emerge in mid to late 1997 or beyond, and an international
56K standard is likely to emerge in 1998 or beyond.  Until the standard  emerges
56K will be  handicapped  by lack of standards and also by a number of unusually
complex  network-related  issues  that may impede  performance  for some  users.
Nevertheless 56K is expected to be a high-volume  market in 1997 and beyond, and
Zoom plans to have a broad line of 56K products, initially incorporating K56flex
and ultimately incorporating international standards.
<PAGE>

Faxmodem Product Features.  The following sets forth some of the key features
incorporated in one or more of the Company's faxmodems:

     Voice Mail. Voice mail capability allows a PC to serve as an answering
     machine with message storage and local or remote message retrieval.
     Advanced options include multiple mailboxes and pager notification.

     Full-duplex  Speakerphone.  This simultaneous two-way speakerphone
     capability allows one or more people to talk "hands free" rather than using
     a telephone handset or headset.  A speakerphone is commonly used for
     conference calls or for situations where someone needs hands free for other
     purposes, such as controlling a computer's mouse, keyboard, or joystick.   
     Many  office speakerphones are half-duplex, permitting sound to travel in 
     only one direction at a time, similar to a walkie-talkie.  Full-duplex 
     speakerphones provide more natural two-way communication.

     Simultaneous  Voice and Data  ("SVD").  SVD capability allows PC users to
     converse over the phone line at the same time that data is being 
     transferred, independent of the application software being used. This  
     capability is useful for applications where two people are working on the 
     same project, as well as for video telephony, technical support and 
     interactive computer games.

     VoiceView.  VoiceView allows two users to switch quickly between voice and 
     data modes during the same call.  This feature is useful for technical 
     support, interoffice communication, on-line shopping and other interactive 
     services.  For example, a VoiceView user is able to switch between data and
     voice modes to review, discuss and edit a remote document during a single 
     phone call.

     Caller ID. Caller ID is a service offered by telephone companies that 
     provides the incoming caller's  phone number, and in some cases the 
     caller's name, through the incoming ring signal.  A faxmodem's Caller ID  
     capability allows a PC to recognize, display and store this information.  
     For example, Caller ID information can be tied to a database to display 
     detailed information about the caller.

     Distinctive Ring.  Distinctive Ring is a service offered by telephone
     companies that assigns more than one phone number to a single phoneline,
     with each number ringing differently. This service along with appropriate
     modem functionality allows someone to arrange for one phone number to be
     answered as a voice line, a second  number to be answered as a fax line,
     and a third number to be answered as a data line. Zoom has been issued a
     US patent related to its distinctive ring technology.

     Plug & Play.  Microsoft's Windows 95 supports Plug & Play, a standard  that
     is intended to allow the installation of Plug & Play-compatible peripherals
     like faxmodems with limited  hardware configuration by the end-user.  Zoom
     believes that Plug & Play will become an important feature of its faxmodems
     as the number of PCs running Windows 95 grows.

     Internet Software.  Most of the Company's faxmodems include software for 
     using the Internet for Web browsing, file transfer and electronic mail, as
     well as a trial subscription to a number of online services and Internet
     service providers.

     Cellular-ready PCMCIA Faxmodems.  The Company's PCMCIA 14.4C and V.34C 
     faxmodems include a cellular-ready feature that allows the faxmodem to be
     plugged into a cellular phone for wireless  communication of fax and data. 
     The Company has developed a new generation of cellular-ready PCMCIA 
     faxmodems with MNP10 EC capability, which  provides more reliable 
     connection, better connection rates and higher data transmission rates than
     cellular ready faxmodems that do not have MNP10 EC.

     Combined Faxmodem/LAN PCMCIA Cards.  The PCMCIA slot in a notebook computer
     is most often used for either faxmodem or LAN capability.  Most notebook  
     computers have only one or two PCMCIA  slots.  In early 1997 Zoom began
     shipping a PCMCIA card that integrates both faxmodem and LAN functionality
     into one card, thereby allowing one PCMCIA slot to serve both functions 
     concurrently.


<PAGE>



North American Modem Products. The Company's most popular 33,600 bps faxmodems
for the North American market and their key features are summarized below.

- -------------------------------------------------------------------------------
PRODUCT                                     KEY FEATURES
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
Zoom/FaxModem V.34I+                        o  Internal
                                            o  Distinctive Ring
                                            o  Internet Software
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
Zoom/FaxModem V.34X+                        o  External
                                            o  Distinctive Ring
                                            o  Internet Software
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
Zoom/FaxModem 33.6 SVD                      o  Internal
                                            o  Voice Mail
                                            o  SVD
                                            o  Distinctive Ring
                                            o  Plug & Play
                                            o  Internet Software
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
Zoom/ComStar SVD                            o  Internal
                                            o  Voice Mail
                                            o  Full-duplex Speakerphone
                                            o  SVD
                                            o  VoiceView
                                            o  Caller ID
                                            o  Distinctive Ring
                                            o  Plug & Play
                                            o  Internet Software
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
Zoom/ComStar XT SVD                         o  External
                                            o  Voice Mail
                                            o  Full-duplex Speakerphone
                                            o  SVD
                                            o  VoiceView
                                            o  Caller ID
                                            o  Distinctive Ring
                                            o  Plug & Play
                                            o  Internet Software
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
Zoom/PCMCIA V.34C                           o  PC Card
                                            o  Distinctive Ring
                                            o  Internet Software
                                            o  Cellular-ready
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
Zoom/PCCARD LAN/FAXMODEM                    o  PC Card
                                            o  Distinctive Ring
                                            o  Internet Software
                                            o  Cellular-ready
                                            o  LAN Interface
- -------------------------------------------------------------------------------


International    Faxmodems.    Most   foreign    countries    have   their   own
telecommunications  standards and regulatory approval  requirements for sales of
communications  products  such as  those  offered  by  Zoom.  As a  result,  the
introduction  of new  products  into  international  markets  can be costly  and
time-consuming.  In 1993 the Company  introduced its first faxmodem approved for
selected Western European countries, and since then the Company has continued to
expand its product offerings  internationally.  The Company entered the Japanese
market in mid-1995,  and the Company now sells a number of products approved for
the Japanese market.  The Company has received  regulatory  approvals for and is
currently  selling  faxmodems  in a number of  countries,  including  Australia,
Austria,   Belgium,  Denmark,  Finland,  Germany,  Ireland,  Italy,  Japan,  the
Netherlands,   Norway,  Poland,   Portugal,   Slovenia,  South  Africa,  Sweden,
Switzerland  and the United  Kingdom.  The Company intends to continue to expand
and enhance its product line for its existing  markets and to seek approvals for
the sale of its products in new countries  throughout the world.  
<PAGE>

ISDN Products.  Zoom is developing a family of  modems  for ISDN communications.
ISDN is an increasingly available  telephone service that  allows existing phone
lines to be used to  transmit data  digitally.  ISDN service permits much higher
data transmission rates than conventional analog telephone service.  Basic ISDN
service  typically  provides two 64,000 bps channels and one 16,000 bps channel.
The higher rates of data  transmission  achievable with ISDN can be particularly
attractive for data-intensive  applications such as the transmission of graphics
and video  images for World Wide Web  browsing or video  telephony.  In February
1997 Zoom  shipped  its first ISDN  product,  the  Zoom/ISDN  Duo,  an  internal
PC-compatible  card that supports use of the ISDN line for analog modem, fax, or
voice   communications;   and  also  supports   analog  modem,   fax,  or  voice
communications  over an analog  phoneline.  Zoom plans to develop other internal
and external ISDN products for the North American and international markets, and
also plans to  integrate  ISDN  capability  into some of its new  remote  access
products.

Multi-line  Faxmodems.  In 1996  Zoom  began  shipping  a family  of  multi-line
faxmodems  targeted  for local area  network fax and data  server  applications,
computer  bulleting  boards,  multi-line  voice  mail  applications,  and  other
applications.  The Zoom/MultiLine  products hold up to eight hot-swappable voice
faxmodems in one small  external case that includes  status  indicators for each
faxmodem.

Remote  Access  Products.  Zoom  currently  ships remote  access  products  that
primarily use technology  acquired from Tribe Computer Works. Zoom has a team of
software,  hardware,  and test engineers working to expand this line in a number
of ways.  Zoom plans to  integrate  analog  modem,  ISDN and 56 Kbps leased line
options  into its  remote  access  products,  and to expand the  product  lines'
software capabilities.

There can be no assurance  that the Company will be able to develop new products
on a timely basis and within  budget,  if at all, or that once  developed any of
these products will be commercially successful.

Sales Channels

Zoom  sells  its  products   primarily   through   high-volume   retailers   and
distributors,  and to PC manufacturers  and other OEMs. The Company supports its
major accounts in their efforts to discern  strategic  directions in the market,
to maintain  appropriate  inventory levels and to offer a balanced  selection of
products.

High-volume  Retailers.  In the United States, Zoom reaches the PC retail market
primarily through high-volume  retailers.  The Company's extensive United States
retail distribution  network includes Best Buy, Circuit City, CompUSA,  Computer
City,  Office  Depot,  OfficeMax,  and  Staples.  Personal  Technology  Research
reported  that in January  1997 the  Company  had the third  greatest  amount of
retail shelf space for modems in North America.

Distributors.  Zoom sells significant quantities of modems through distributors,
who often sell to corporate accounts,  value-added  resellers and other channels
that are generally not served by the Company's retailer customers. The Company's
North American distributors include Ingram Micro, MicroAge, and Tech Data.

OEMs.  Zoom  has been  increasing  its OEM  sales,  support,  and  manufacturing
efforts.  As a result, the Company's  worldwide sales to OEM customers increased
to 19% of net  sales in 1996  from 8% of net sales in 1994.  The  Company's  OEM
customers sell the Company's  products  under their own name or incorporate  the
Company's products as a component of their pre-packaged  systems.  The Company's
packaging design capability  enables the Company to respond to an OEM's need for
customized or generic  products and packaging.  The Company is responsive to the
needs  of  personal  computer   manufacturers   including  on-time  delivery  of
high-quality  cost-effective products that are supported by strong documentation
of the products and the products' quality.

International  Channels.  In  international  markets,  Zoom  sells its  products
primarily through independent distributors and retailers. The Company's European
distributors  include  Actebis,  Criterium,  Ingram  Micro,  Northamber,   Redco
Telematica,  Softeam,  and UMD. The Company's  major European  retail  customers
include  Schadt and Vobis.  In Japan,  the  Company  distributes  its  faxmodems
primarily through OEM customers.  The Company's  international  sales (including
sales to OEMs located  outside the United States) have grown from 10% in 1994 to
26% in 1996. The Company believes that its continued sales growth outside of the
United States will require substantial  additional  investments of resources for
product  design and testing,  regulatory  approvals,  production,  marketing and
tailoring of instruction manuals, packaging and software development for various
foreign languages.  The Company's  international sales are also subject to risks
generally  associated  with  international  sales,  including  United States and
international regulatory requirements and policy changes, political and economic
instability,  currency exchange  fluctuations,  inventory  management,  accounts
receivable collection, the management of distributors or representatives, tariff
regulations and seasonality of sales.

<PAGE>

Sales, Marketing and Support
In North America the Company sells its  Zoom-brand  products  primarily  through
commissioned  independent  sales  representatives  managed and  supported by the
Company's own staff.  For western  Europe,  in 1996 the Company  performed  most
European-based  marketing,  sales,  credit,  collections,  customer  support and
warehousing  through an  independent  organization  compensated  on a commission
basis.  Zoom  terminated this  relationship in early 1997. The Company  recently
established  a sales  office in  Munich,  Germany  which  services  accounts  in
continental  Western  Europe.  The Company  expects to establish  another  sales
office in the United Kingdom to service the U.K. and Irish markets. Warehousing,
customs  clearance,  shipping,  and invoicing for Europe are now primarily  done
under  contract  with Road Air, a specialist  in these  services  located in the
Netherlands.  Technical support for Europe is handled by Zoom's distributors and
under  contract  with a technical  support  specialist  company in the U.K.  For
countries  outside  North  America  and Europe,  the  Company's  in-house  staff
typically  works  directly  with  country-specific  distributors.  The Company's
worldwide OEM sales are primarily handled by Zoom's  Boston-based staff, who are
at times assisted by commissioned sales representatives.

The Company  believes that Zoom is a widely  recognized  brand name. The Company
builds  upon its  brand  equity  in a  variety  of ways,  including  cooperative
advertising,  product packaging,  trade shows and public relations.  The Company
generally provides its high-volume  retailers with an allowance to advertise the
Company's products in conjunction with the customers' general  advertising.  The
Company  believes  that  such   advertising   serves  to  both  efficiently  and
effectively target the end-user market for its products.

Zoom  seeks to develop  quality  products  that are  user-friendly  and  require
minimal  support.  The Company supports its claims of quality with warranties of
one to seven years,  depending  upon the product.  To address the needs of those
end-users of the Company's products who require  assistance,  the Company has an
in-house staff of technical specialists who provide telephone support six days a
week.  These  specialists  also maintain a bulletin board and a home page on the
World Wide Web, forums on America Online and CompuServe, and a fax-back service.

Research and Development

The Company's  research and  development  efforts are focused on developing  new
products for PC  communications  markets,  further enhancing the capabilities of
existing products and reducing production costs. The Company has developed close
collaborative  relationships  with certain of its OEM  customers  and  component
suppliers,  who work with the  Company  to  identify  and  respond  to  emerging
technologies and market trends by developing products that address these trends.
In addition, the Company purchases modem chipsets from Rockwell that incorporate
sophisticated modem technology,  thereby eliminating the need for the Company to
develop this  technology  in-house.  As of February 5, 1997,  the Company had 40
employees  engaged  primarily in research  and  development.  This  research and
development  team performs  electronics  hardware design and layout,  mechanical
design, prototype construction and testing,  component  specification,  firmware
development,  product testing, foreign and domestic regulatory approval efforts,
end-user and internal  documentation,  and  third-party  software  selection and
testing.  During 1996,  1995 and 1994, the Company  expended $2.9 million,  $1.8
million and $1.2 million, respectively, on research and development activities.

Manufacturing and Suppliers

The Company's products are currently designed for high-volume automated assembly
in North America to help assure low cost,  rapid market entry,  short lead times
and  reliability.  The  Company  supplies  large kits of parts to one of several
automated contract assemblers in Mexico, India, and the Northeast United States.
The contract assemblers insert most parts  automatically by machine,  solder the
circuit board,  and in-circuit test the completed  assemblies.  These assemblies
are then typically  shipped to the Company,  which  completes the  manufacturing
process and performs a computerized functional test for further quality control.
Completed  boards are  typically  then  packaged by the  Company,  allowing  the
Company to tailor the packaging  and its contents for its customers  immediately
before shipping. Circuit design, circuit board layout and component sourcing are
currently performed by the Company.

Zoom typically uses only one contract assembler for a given design,  although in
some cases production tooling is in place for high-volume  products at a back-up
facility. These assemblers are normally adequate to meet reasonable and properly
planned  production  needs,  but a fire,  natural  calamity,  strike,  or  other
significant  event  at  an  assembler's  facility  could  adversely  affect  the
Company's shipments and revenues.  The Company's products include a large number
of parts,  most of which are available  from multiple  sources with varying lead

<PAGE>
times. However,  there are only a limited number of suppliers of modem chipsets,
the most critical  component of the Company's  faxmodems.  Currently Rockwell is
the  Company's  only modem  chipset  supplier.  Due to capacity  constraints  of
Rockwell,  the Company has experienced delays in receiving shipments of chipsets
in the past,  and the Company  may  experience  such  delays in the future.  The
Company believes its relationship with Rockwell is good.  However,  there can be
no assurance that Rockwell will, in the future,  sell chipsets to the Company in
quantities sufficient to meet the Company's needs. An interruption in Rockwell's
ability  to  deliver  chipsets,   a  failure  of  Rockwell  to  produce  chipset
enhancements  or new chipsets on a timely  basis and at  competitive  prices,  a
material  increase  in the price of  Rockwell's  chipsets  or any other  adverse
change in the Company's relationship with Rockwell would have a material adverse
effect on the Company's results of operations.

Competition

The  PC   communications   products   industry  is  intensely   competitive  and
characterized by rapid  technological  advances and emerging industry standards,
resulting  in  constant  pricing  pressures.  These  changes  result in frequent
introductions  of  new  products  with  added  capabilities  and  features,  and
continuous improvements in the relative functionality and price of faxmodems and
other PC communications  products.  The failure of the Company to keep pace with
technological advances would adversely affect the Company's competitive position
and results of operations.

The Company's primary  competitors  include Boca Research,  Diamond  Multimedia,
GVC, Global Village, Hayes Microcomputer  Products,  Motorola and U.S. Robotics.
Many of the Company's  competitors and potential competitors have more extensive
financial,   engineering,  product  development,   manufacturing  and  marketing
resources than the Company.

The Company's products compete on the basis of product features, price, quality,
reliability, brand name recognition,  product breadth and shelf space, developed
sales channels, product documentation,  product warranties and technical support
and service. The Company believes that it is competitive in each of these areas.
However,  there  can  be  no  assurance  that  competitors  will  not  introduce
comparable or superior products  incorporating more advanced technology at lower
prices,  or that  other  changes in market  conditions  or  technology  will not
adversely affect the Company's ability to compete successfully in the future.

Products  recently  introduced by certain other companies include ADSL and cable
modems that can transmit  data and other  information  at  significantly  faster
speeds than analog  modems such as those sold by the  Company.  These  products,
however, are generally more expensive than analog modems and cannot be used with
conventional telephone service. In addition, the use of ADSL and cable modems is
currently  impeded  by a lack of  widely  accepted  standards  and a  number  of
technical and  infrastructure  limitations.  It is likely that if these types of
modems reach the high market  volume  suited to Zoom's  business  and  marketing
channels,  that the Company will seek to introduce appropriate modems. There can
be no assurance that the Company will develop these modems on a timely basis, if
at all, or that once developed, these modems will compete effectively.

Intellectual Property Rights

Zoom relies primarily on a combination of copyrights,  trademarks, trade secrets
and patents to protect its  proprietary  rights.  The Company has trademarks and
copyrights for its firmware (software on a chip), printed circuit board artwork,
instructions,  packaging and literature.  The Company also has three patents and
one pending patent application in the United States.  The patents,  which expire
in 2011, 2013 and 2013,  respectively,  generally relate to faxmodem distinctive
ring,  use  of  a  faxmodem  as  a  scanner,  and  modified  ringback  answering
capabilities.  There can be no  assurance  that any patent  application  will be
granted or that any patent obtained will provide  protection or be of commercial
benefit to the Company, or that the validity of a patent will not be challenged.
Moreover,  there can be no assurance that the Company's  means of protecting its
proprietary  rights will be adequate or that the Company's  competitors will not
independently develop comparable or superior technologies.

Zoom  licenses  certain  technologies  used in its products,  typically  bundled
software,  on a  nonexclusive  basis.  In addition the Company  purchases  modem
chipsets that incorporate sophisticated modem technology from Rockwell.

Zoom has received, and may receive in the future, infringement claims from third
parties  relating  to the  Company's  products  and  technologies.  The  Company
investigates  the  validity of these  claims and, if it believes the claims have
merit, responds through licensing or other appropriate actions. Certain of these
claims have related to technology  included in Rockwell and other chipsets.  The
Company forwards these claims to the appropriate  vendor.  If the Company or its

<PAGE>
component  manufacturers were unable to license necessary  technology on a cost-
effective  basis,  the  Company  could be  prohibited  from  marketing  products
containing that  technology,  incur  substantial  costs in redesigning  products
incorporating  that technology,  or incur  substantial costs defending any legal
action taken against it. See Item 3 - LEGAL PROCEEDINGS.

Government Regulation

All of the Company's North American  products are required to meet United States
and Canadian government regulations,  including regulations of the United States
Federal  Communication  Commission  ("FCC") and Industry Canada,  which regulate
equipment,  such as modems,  that connects to the public telephone network.  The
FCC  also  regulates  electromagnetic  radiation  emissions.  For  each  of  the
Company's products sold in most foreign countries, specific regulatory approvals
must be obtained for such matters as electrical safety, manufacturing standards,
country-specific  telecommunications  equipment requirements and electromagnetic
radiation and susceptibility  requirements.  The Company has received regulatory
approvals  for  certain  faxmodems  in  Australia,  Austria,  Belgium,  Denmark,
Finland,  Germany,  Ireland,  Italy,  Japan,  the Netherlands,  Norway,  Poland,
Portugal,  Slovenia,  South Africa, Sweden,  Switzerland and the United Kingdom.
The Company  expects to continue to seek and receive  approvals for new products
in a large number of countries  throughout the world. The regulatory process can
be time-consuming and can require the expenditure of substantial  resources.  In
many  foreign  countries,  obtaining  required  regulatory  approvals  may  take
significantly  longer than in the United States.  There can be no assurance that
the FCC or foreign  regulatory  agencies will grant the requisite  approvals for
any of the Company's  products on a timely basis,  if at all.  United States and
foreign  regulations  regarding the manufacture  and sale of  telecommunications
devices are subject to future change. The Company cannot predict what impact, if
any, such changes may have upon its business.

Backlog

The Company's  backlog at January 31, 1997 and January 31, 1996 was $4.4 million
and $5.1 million,  respectively,  most of which was for delivery within 120 days
or less.  Orders included in backlog generally may be canceled or rescheduled by
customers without significant penalty.  Backlog as of any particular date should
not be relied  upon as  indicative  of the  Company's  net sales for any  future
period.

Employees

As of February 5, 1997, Zoom had 324 full-time  employees  (excluding  employees
hired on a temporary  basis).  Of this total,  40 were  engaged in research  and
development, 189 were involved in purchasing,  assembly, packaging, shipping and
quality control, 58 were engaged in sales,  marketing and technical support, and
the remaining 37 performed  accounting,  administrative and executive functions.
The Company also hires employees on a temporary  basis.  This group comprised 30
individuals at February 5, 1997. Most of these temporary employees were employed
in  manufacturing.  The Company considers its relationship with its employees to
be good. None of the Company's employees is represented by a labor union.

Executive Officers

The names of the current  executive  officers  of Zoom and certain  biographical
information furnished by them, are set forth below:

        Name         Age              Position with Zoom
- --------------------------------------------------------------------------------

Frank B. Manning      48   Chief Executive Officer, President and Director
Peter R. Kramer       45   Executive Vice President and Director
Eugene Chang          42   Vice President of Strategic Business Development
Terry J. Manning      45   Vice President of Sales and Marketing
Dean N. Panagopoulos  39   Vice President of Information Systems
Deena Randall         43   Vice President of Operations
Steven T. Shedd       44   Vice President of Finance and Chief Financial Officer
Dana Whitney          34   Vice President of Engineering

Frank B. Manning is a co-founder  of the Company and has been  President,  Chief
Executive  Officer and a Director of the Company since May 1977, and Chairman of
the Board  since  1986.  He  earned  his BS, MS and PhD  degrees  in  Electrical
Engineering  from the  Massachusetts  Institute  of  Technology,  where he was a
National Science Foundation  Fellow.  Since 1993 Mr. Manning has been a director
of MicroTouch Systems, a NASDAQ-listed leader in touchscreen technology.

Peter R.  Kramer is a  co-founder  of the Company  and has been  Executive  Vice
President  and a Director of the Company since May 1977. He earned his BA degree
in 1973 from SUNY Stony Brook and his MFA degree from C.W. Post College in 1975.

Eugene  Chang  joined Zoom in December 1995. In 1990 Mr. Chang founded Extension
Technology, Inc.,  a  venture-funded  ISDN  company  specializing  in high-speed
remote access devices, and served as its president and  chief  executive officer
until it was sold to  Microcom in 1995.   After the  sale, Mr. Chang became Vice
President  of  ISDN  Technology  at  Microcom.  Mr. Chang  earned  his BS and MS
degrees in Computer Science and Electrical Engineering  from  the  Massachusetts
Institute of Technology.

Terry J.  Manning  joined  Zoom in 1984 and served as  corporate  communications
director from 1984 until 1989 when he became the director of the Company's sales
and marketing.  Terry Manning is Frank Manning's  brother.  Terry Manning earned
his BA  degree  from  Washington  University  in St.  Louis in 1974 and his MPPA
degree from the University of Missouri at St. Louis in 1977.

Dean N. Panagopoulos  joined Zoom in February of 1995 as Director of Information
Systems.  For three  years prior to joining  Zoom,  Mr.  Panagopoulos  served as
Director of Technical Services for Ziff Information Services, a major outsourcer
of  computing  services.  Prior to that,  Mr.  Panagopoulos  worked for  General
Electric's  Aircraft  Engines  Division,   where  he  was  responsible  for  the
development and implementation of advanced  manufacturing  systems for automated
facilities.  He earned his BS degree in  Information  Systems from  Northeastern
University.

Deena Randall joined Zoom in 1977 as its first  employee. Ms. Randall has served
in various senior positions within the Company and  has directed  the  Company's
operations  since  1989.  Ms. Randall earned her BA degree from Eastern Nazarene
College in 1975.

Steven T. Shedd joined Zoom in March 1996 as Vice President of Finance and Chief
Financial Officer.  From April 1995 until joining the Company,  Mr. Shedd served
as the Corporate Vice President,  Finance and Chief Financial Officer of Versyss
Incorporated,  a computer support and service company.  From 1992 to April 1995,
Mr. Shedd served in various capacities with TSI Corporation, a contract research
organization   providing  job  testing  services  to  the   pharmaceutical   and
biotechnology industries,  including as a Vice President and the Chief Financial
Officer from 1993 to 1995, and as Corporate  Controller  from 1992 to 1993. From
1989 to 1992, Mr. Shedd served in various capacities at Millipore Corporation, a
manufacturer of purification and analytical products,  including as the Director
of Accounting from 1990 to 1992 and as a Division  Controller from 1989 to 1990.
Mr. Shedd earned his BA degree from Brandeis University in 1974 and his MBA from
Boston University in 1978.

Dana Whitney joined Zoom in 1994 as director of engineering.  From 1991 to 1994,
Mr.  Whitney  served  in  various   capacities   with  Motorola  Codex,  a  data
communications company, including as a senior design engineer from 1990 to 1991,
and as an engineering  manager from 1991 to 1994. As engineering  manager he was
responsible  for the  design and  development  of  digital  data  communications
products.  Mr. Whitney earned his BSEE from the University of  Massachusetts  at
Dartmouth in 1984 and his MBA degree from Bryant College in 1993.


ITEM 2 -  PROPERTIES

Zoom  currently  occupies  approximately  57,000  square  feet  of two  adjacent
buildings with a total of approximately  72,000 square feet at 201 and 207 South
Street, Boston, Massachusetts.  These buildings were purchased by the Company in
April 1993 and currently  serve as the corporate  headquarters.  In August 1996,
the  Company   entered  into  a  five  year  lease  for  a  77,428  square  foot
manufacturing and warehousing facility at 655 Summer Street,  Boston, MA. At the
end of the initial lease term, the Company has an option to extend the lease for
an additional  five year term.  Under the lease  agreement,  the Company has the
right to cancel the lease at any time after 24 months of the initial lease term.
During  the first half of 1996,  the  Company  periodically  leased up to 20,000
square feet off-site  warehouse space on a month-to-month  basis.  This practice
was terminated  when the new facility on Summer Street was leased.  In July 1996
the Company  entered into a two year lease for a 5,276  square foot  facility in

<PAGE>

Alameda,  California in connection  with the Company's  acquisition of a product
line from Tribe Computer Works.  The facility has been closed by the Company and
is currently being sublet to another corporation.  The Company remains obligated
for the lease  through June 1998.  The Company also leases co-op office space in
Dallas, Texas.


ITEM 3 -    LEGAL PROCEEDINGS

On March 21,  1996,  James A. Storer and REFAC  International,  Ltd.,  a company
engaged in the business of acquiring and licensing patents, filed a complaint in
the United  States  District  Court,  District of  Massachusetts,  naming  Hayes
Microcomputer  Products, Inc. and the Company as defendants in a patent lawsuit.
The  complaint  alleges  that  the  V.42  bis  international  telecommunications
standard for data compression in computer modems is covered by a patent owned by
the  plaintiffs,  and the  defendants'  modems that  incorporate  this  standard
infringe  the  patent.  While the  complaint  seeks to  permanently  enjoin  the
defendants   from   infringing   the  patent  and  monetary   damages  for  past
infringement, REFAC has offered to negotiate a royalty for licensing the patent.
The  Company  believes  that  the  alleged   infringement   involves  technology
incorporated in chipsets provided to it from Rockwell International and that, if
so, the Company will be indemnified by Rockwell.  By an agreement dated July 12,
1996 Rockwell has agreed,  subject to certain  conditions,  to assume defense of
Zoom against the action.


ITEM 4 -   SUBMISSION OF MATTERS TO A VOTE OF SECURITIES HOLDERS

No matter  was  submitted  to a vote of  securities  holders  during  the fourth
quarter of the fiscal year covered in this report.


<PAGE>


                                                        PART II

ITEM 5 - MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
            MATTERS

The  Company's  Common Stock is traded on the Nasdaq  National  Market under the
symbol "ZOOM." The following table sets forth,  for the periods  indicated,  the
high and low sale  prices per share of Common  Stock,  as reported by the Nasdaq
National Market.

Fiscal Year Ending December 31, 1995                    High               Low
                                                        ----               ---
            First Quarter...........................   $10.25           $  7.00
            Second Quarter..........................     9.13              6.88
            Third Quarter...........................    17.25              6.75
            Fourth Quarter..........................    20.75             13.63

Fiscal Year Ending December 31, 1996

            First Quarter...........................  $20.875            $13.75
            Second Quarter..........................    27.00            13.375
            Third Quarter...........................   16.125              7.50
            Fourth Quarter..........................   13.125              8.25

As of March 25, 1997,  there  were  approximately  382  holders of record of the
Company's Common Stock.

Recent Sales of Unregistered Securities

On June 24,  1996 the Company  issued  102,641  shares of Common  Stock to Tribe
Computer Works, Inc. to acquire certain assets, including inventory and property
and equipment.  The shares of Common Stock so issued were not  registered  under
the Securities Act of 1933 in reliance upon the exemption from  registration set
forth in Section 4 (2) under said Act.

Dividend Policy

The Company has never  declared or paid cash  dividends on its capital stock and
does not plan to pay any cash dividends in the foreseeable future. The Company's
current policy is to retain all of its earnings to finance  future  growth.  The
Company's bank credit facility restricts the payment of cash dividends.

Limitations Affecting Holders of Common Stock

An  investment  in Common  Stock  which  results  in a change of  control of the
Company may be subject to review and approval  under the  Investment  Canada Act
(Canada) (the "ICA"),  if the person acquiring control is not a Canadian person;
provided, however, that if the person acquiring control is a national of a World
Trade Organization member country (which includes the United States),  then such
investment  shall not be  subject  to review  under the ICA so long as the gross
assets  of the  Company  have an  aggregate  value  of less  than  $160  million
Canadian.  This process may have the effect of delaying or preventing the change
in control of the Company.  Under the Canada Business Corporations Act, not less
than  one-third  of the  members of the Board of  Directors  and any  committees
thereof must be resident  Canadians (and not less than one-half if the Company's
sales in Canada exceed 5% of net sales).

Certain Income Tax Considerations

The  following  summary is based on the tax laws of the United States and Canada
as in effect on the date of this  Report,  and is  subject  to changes in United
States and Canadian law,  including changes that could have retroactive  effect.
The summary is further  based on the  Convention  between  Canada and the United
States of America  with  respect to Taxes on Income and on  Capital,  as amended
(the "Convention"),  the published  administrative  practices of Revenue Canada,
Taxation and the Internal Revenue Service and judicial  decisions,  all of which
are subject to change.  The  discussion  summarizes  certain tax  considerations
relevant to individual and corporate holders of Common Stock who, for income tax
purposes, are resident in the United States and not in Canada, hold Common Stock
as  capital  assets,  and do not use or hold the  Common  Stock in  carrying  on

<PAGE>

business through a permanent establishment or in connection with a fixed base in
Canada  (collectively,  "Unconnected US Shareholders").  The tax consequences of
holding the Common Stock by individuals or corporations  who are not Unconnected
US Shareholders may differ  substantially  from the tax  consequences  discussed
herein.  The  summary  does not take into  account  the tax laws of the  various
provinces  or  territories  of Canada or the tax laws of the  various  state and
local jurisdictions in the United States.

The summary is intended to be a general  description  of the Canadian and United
States  tax  considerations.  It does  not  take  into  account  the  individual
circumstances of any particular holder of Common Stock. Therefore,  Stockholders
should  consult their own tax advisors with respect to the tax  consequences  of
holding Common Stock.

Canadian Federal Income Tax Considerations

Any  dividends  on the Common  Stock paid or  credited,  or deemed to be paid or
credited to  Unconnected US  Shareholders  generally will be subject to Canadian
withholding  tax. Under the  Convention,  the rate of withholding  tax generally
applicable to Unconnected US Shareholders is 15%. In the case of a United States
corporate  shareholder  owning 10% or more of the voting  shares of the Company,
the applicable  withholding tax is 6% for dividends paid or credited in 1996 and
5% thereafter.

Capital gains  realized on the  disposition  of Common Stock by  Unconnected  US
Shareholders  will not be subject to tax under the Income Tax Act (Canada)  (the
"Tax Act")  unless such Common  Stock is taxable  Canadian  property  within the
meaning of the Tax Act.  Common  Stock will  generally  not be taxable  Canadian
property to a holder unless, at any time during the five year period immediately
preceding a  disposition,  the holder,  or persons  with whom the holder did not
deal at arm's  length,  or any  combination  thereof,  owned  25% or more of the
issued  shares of any class or series of the  Company.  If the  Common  Stock is
considered  taxable Canadian property to a holder, the Convention will generally
exempt  Unconnected US  Shareholders  from tax under the Tax Act in respect of a
disposition  of Common Stock  provided the value of the shares of the Company is
not derived  principally from real property  situated in Canada.  Neither Canada
nor any  province  thereof  currently  imposes  any estate  taxes or  succession
duties.

United States Federal Income Tax Considerations

Unconnected  US  Shareholders  generally will treat the gross amount of any cash
dividends paid by the Company,  without  reduction for the Canadian  withholding
tax, as dividend  income for United  States  federal  income tax purposes to the
extent of the  Company's  current or  accumulated  earnings and profits.  If the
dividend  distribution  is  paid  in  Canadian  dollars,  the  dividend  will be
includable  in income  when  received  in an amount  equal to the United  States
dollar value, on the date of  distribution,  of the amount so  distributed;  any
gain or loss on the  conversion  of the  distribution  into US  dollars  will be
ordinary in nature.  Subject to the  limitations set forth in Section 904 of the
Internal  Revenue Code of 1986, as amended (the "Code") (which limits the extent
to which a United States  taxpayer may credit  against its United States federal
income tax  liability any taxes paid by it to a foreign  country),  the Canadian
tax withheld or paid with respect to distributions on the Common Stock generally
may be credited  against the United  States  federal  income tax liability of an
Unconnected US Shareholder if such holder makes an appropriate  election for the
taxable  year in  which  such  taxes  are  paid  or  accrued;  alternatively,  a
shareholder  who does not elect to credit  any  foreign  taxes  paid  during the
taxable  year may deduct  such  taxes in such  taxable  year.  In  addition,  an
Unconnected US Shareholder that is a domestic  corporation that owns 10% or more
of the Common Stock and receives a dividend and elects to credit  foreign  taxes
is deemed to have  received  (and to have paid as a foreign tax eligible for the
foreign tax credit,  subject to the limitations of Section 904) a portion of the
foreign taxes paid by the Company.  Because the foreign tax credit provisions of
the Code are complex,  investors  should  consult  their own tax  advisors  when
claiming foreign tax credits.  Dividends paid on the Common Stock will generally
not be eligible for the dividends received deduction otherwise allowed to United
States corporate shareholders.

The sale of Common Stock  generally  will result in the  recognition  of gain or
loss to an  Unconnected  US  Shareholder  in an amount  equal to the  difference
between the amount realized and the holder's adjusted basis in the Common Stock.
Gain or loss upon the sale of  Common  Stock  will be  short-term  or  long-term
capital  gain or loss,  depending  on whether the shares have been held for more
than one year.


<PAGE>



ITEM 6 - SELECTED FINANCIAL DATA

The following table contains certain selected consolidated financial data of the
Company  and is  qualified  in its  entirety by the more  detailed  Consolidated
Financial  Statements and Notes thereto included  elsewhere in this report.  The
statement of operations  data for the years ending  December 31, 1994,  1995 and
1996 and the  balance  sheet  data as of  December  31,  1995 and 1996 have been
derived from the Consolidated  Financial  Statements of the Company,  which have
been audited by KPMG Peat Marwick LLP, independent certified public accountants,
and are included  elsewhere in this report.  The statement of operations data of
the  Company  for the years  ending  December  31, 1992 and 1993 and the balance
sheet  data as of  December  31,  1992,  1993 and 1994  have been  derived  from
consolidated  financial  statements  of the Company,  which have been audited by
KPMG Peat Marwick LLP and are not  included in this report.  This data should be
read in conjunction with the Consolidated Financial Statements and related Notes
thereto and  "Management's  Discussion  and Analysis of Financial  Condition and
Results of Operations" appearing elsewhere herein.
<TABLE>
<CAPTION>

                                            Years Ending December 31,
                                                       1992         1993         1994        1995            1996
                                                       ----         ----         ----        -----           ----
                                                              (In thousands, except per share data)
<S>                                                 <C>          <C>          <C>          <C>           <C>
Statement of Operations Data:
Net sales...................................        $41,896      $55,230      $68,180      $96,997       $100,195
Cost of goods sold..........................         30,341       42,324       53,875      73,402          79,803
                                                     ------       ------       ------      -------         ------
     Gross profit...........................         11,555       12,906       14,305       23,595         20,392
Operating expenses:
       Selling..............................          3,286        4,562        6,573        9,023         10,216
       General and administrative...........          1,739        1,204        1,776        2,840          3,674
       Research and development.............            646        1,101        1,250        1,835          2,940
                                                    -------      -------      -------      -------       --------
         Total operating expenses...........          5,671        6,867        9,599      13,698          16,830
                                                  ---------     --------     --------     --------       --------
     Income from operations.................          5,884        6,039        4,706        9,897          3,562
Interest income (expense) net ..............             28           90          (75)         (33)           293
                                                -----------  -----------    ---------- ------------     ----------
     Income before income taxes.............          5,912        6,129        4,631        9,864          3,855
Income tax expense..........................          2,326        2,342        1,817        3,800          1,375
                                                  ---------    ---------     ---------   ----------      ---------
     Net income.............................       $  3,586    $   3,787     $  2,814    $   6,064       $  2,480
                                                   ========    =========     ========    =========       ========

Income per common and common equivalent share:
     Primary................................     $    0.62    $    0.63    $    0.47    $    0.99       $    0.35
                                                 ==========   ==========   ==========   ==========      =========
     Fully diluted..........................     $    0.62    $    0.63    $    0.47    $    0.98       $    0.35
                                                 ==========   ==========   ==========   ==========      =========

Weighted average common and common equivalent shares:
     Primary................................          5,777        6,010        6,010        6,126          7,162
     Fully diluted..........................          5,815        6,010        6,014        6,173          7,162


                                                                  December 31,


                                                         1992        1993         1994       1995            1996
                                                         ----        ----         ----       -----           ----
                                                                         (In thousands)
Balance Sheet Data:
Working capital                                       $11,263     $14,618      $17,146     $24,135        $41,557
Total assets                                           14,347      23,993       26,816      49,595         56,782
Long-term debt                                             --          --           --          --             --
Total stockholders' equity                             11,524      16,199       19,303      27,274         47,355
</TABLE>


<PAGE>


ITEM 7 - MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

          This report contains  forward-looking  statements  which involve risks
and  uncertainties.  The Company's actual results may differ  significantly from
the results  discussed  in the  forward-looking  statements.  Factors that might
cause such a  difference  include,  but are not limited to,  those  discussed in
"Risk Factors" contained in the Company's registration statement on Form S-3, as
amended,  as filed with the Securities  and Exchange  Commission on February 16,
1996 (the "Registration Statement").

Overview

Zoom was established in 1977, and initially  produced and marketed speed dialers
and other specialty telephone  accessories.  The Company shipped its first modem
in 1983 and its first  faxmodem  in 1990.  Faxmodems  and related  products  now
comprise  substantially  all of the  Company's  revenues.  The Company sells its
products both domestically and internationally through high-volume retailers and
distributors, and to PC manufacturers and other OEMs.

In 1996 the  Company's  net  sales  grew by 3.3% to $100.2  million.  In 1996 as
compared to 1995,  the  Company's  sales to retailers  and  distributors  in the
United States decreased by 12% to $61.0 million,  the Company's  worldwide sales
to  OEM  customers  increased  by  57%  to  $19.0  million,  and  the  Company's
international sales (excluding sales to OEMs) increased by 28% to $18.7 million.

The Company's  results of operations have been and may continue to be subject to
significant  quarterly  fluctuations.  The results for a particular  quarter may
vary due to a number of factors,  including  the overall  state of the PC and PC
communications markets, pricing and other competitive conditions,  the timing of
orders,  market acceptance of the Company's or its OEM customers' products,  the
timing of the  announcement  and introduction of new products by the Company and
its  competitors,  variations in the Company's  product mix and component costs,
variations in the proportion of sales made to retailers,  distributors and OEMs,
the financial health and inventory levels of the Company's  customers,  seasonal
promotions  by the  Company,  its  customers  and  competitors,  the  timing  of
expenditures in anticipation of future sales, the timing of product  development
costs,  the  availability  of  materials  and labor  necessary  to  produce  the
Company's  products and general economic  conditions.  The Company also believes
that its sales are seasonal,  with increased  sales  generally  occurring in the
fourth quarter  reflecting holiday sales. The Company expects that its quarterly
operating  results will continue to fluctuate in the future as a result of these
and other factors.

The Company  continually  seeks to improve its product designs and manufacturing
approach  in order to reduce  its  costs.  The  Company  pursues a  strategy  of
outsourcing rather than internally  developing its faxmodem chipsets,  which are
application-specific  integrated  circuits that form the technology base for its
faxmodems.  By  outsourcing  the  chipset  technology,  the  Company  is able to
concentrate  its research and  development  resources on faxmodem system design,
leverage the  extensive  research and  development  capabilities  of its chipset
suppliers,  and reduce its development time and associated costs and risks. As a
result  of  this  approach,  the  Company  is able to  quickly  develop  new and
innovative  products  while  maintaining a relatively  low level of research and
development  expense as a  percentage  of sales.  The  Company  also  outsources
aspects of its  manufacturing to contract  assemblers as a means of reducing its
fixed  labor  costs and capital  expenditures,  and to provide the Company  with
greater flexibility in its capacity planning.

The Company's gross margins were 20.3%,  24.3% and 21.0% in 1996, 1995 and 1994,
respectively. The Company's gross margins are typically significantly higher for
its branded  product  sales to retailers  and  distributors,  both in the United
States  and  internationally,  than for sales to OEMs.  However,  the  increased
margins for sales to retailers and  distributors  are generally offset by higher
operating  expenses  associated  with those sales than for sales to OEMs.  These
increased   operating   expenses   typically   include  costs  for   cooperative
advertising, technical support and sales commissions.

The market for faxmodems has been characterized by rapid  technological  change,
frequent product introductions, evolving industry requirements and short product
life cycles.  When component costs drop and  competitive  and enhanced  products
become available, the Company's products are susceptible to price decreases. The
Company has a policy of offering price protection to certain of its retailer and
distributor  customers  for some or all of  their  inventory,  whereby  when the
Company reduces its prices for a product, the customer receives a credit for the
difference  between the original purchase price and the Company's reduced price.
In 1994,  1995 and 1996 the  Company's  results  of  operations  were  adversely
affected by reductions in prices which  resulted in relatively  high charges for
price  protection.  The impact of price reductions is mitigated by the Company's
introduction  of new  products,  the  adoption of  lower-cost  technologies  and
product  designs,  and the  implementation  of  other  measures  to  reduce  its
manufacturing and other costs.

Results of Operations

The following table sets forth certain  financial data for the periods indicated
as a percentage of net sales:

<TABLE>
<CAPTION>
                                                                                   Year Ending December 31,
<S>                                                                        <C>            <C>              <C> 
                                                                           1994           1995             1996
                                                                           ----           ----             ----
Net sales.......................................................            100.0%         100.0%          100.0%
Cost of goods sold..............................................             79.0           75.7            79.7
                                                                           --------       ------          ------
     Gross profit...............................................             21.0           24.3            20.3
Operating expenses:
    Selling.....................................................              9.7            9.3            10.2
    General and administration..................................              2.6            2.9             3.7
    Research and development....................................              1.8            1.9             2.9
                                                                          -------        -------         -------
         Total operating expenses...............................             14.1           14.1            16.8
                                                                           ------         ------          ------
Operating income................................................              6.9           10.2             3.5
     Interest income (expense), net.............................             (0.1)          (0.0)            0.3
                                                                           ------         -------        -------
Income before income taxes......................................              6.8           10.2             3.8
     Income tax expense.........................................              2.7            3.9             1.3
                                                                          -------         ------          ------

Net income......................................................              4.1%           6.3%            2.5%
                                                                          =======         ======          ======
</TABLE>

Year Ending December 31, 1996 Compared to Year Ending December 31, 1995

Net Sales.  Net sales  increased 3% to $100.2 million in 1996 from $97.0 million
in 1995.  Unit  volumes  declined as  significant  increases  in V.34 28,800 and
33,600 bps  shipments  did not fully  offset  dramatic  declines in shipments of
14,400 bps faxmodems. Average selling prices for V.34 faxmodems dropped 21% from
1995 to 1996,  due to  severe  price  competition  and  lower  prices  for modem
chipsets. However, overall average selling price of the Company's faxmodems rose
as the product mix shifted to V.34 faxmodems, which typically have higher prices
than 14,400  faxmodems.  The Company  experienced  increases in net sales in its
worldwide OEM and international  (excluding sales to OEMs) sales channels during
1996 compared to 1995 as worldwide OEM sales  increased 57% to $19.0 million and
international sales (excluding sales to OEMs) increased by 28% to $18.7 million.
Sales to retailers and  distributors in the United States decreased 12% to $61.0
million in 1996 compared to 1995.

Gross  Profit.  Gross profit as a percentage  of net sales  declined to 20.3% in
1996 from 24.3% in 1995.  This  decline in gross  margin  was  primarily  due to
increased price  protection  afforded certain  retailers and inventory  reserves
against slower speed modems recognized during the year. In addition, the Company
increased its percentage of sales to OEM customers,  which typically carry lower
gross margins.  These  decreases were partially  offset by declining parts costs
for most faxmodem models.

Selling  Expenses.  Selling expenses  increased 13% to $10.2 million or 10.2% of
net sales in 1996 from $9.0  million or 9.3% of net sales in 1995.  The increase
was  primarily  due to added costs  associated  with the sales and  marketing of
products  acquired from Tribe Computer Works and to increased  payroll  expenses
for sales,  technical  support and customer service  personnel.  These increases
were  partially  offset by lower  selling  costs  associated  with the Company's
increased  percentage  of OEM sales,  which  generally  require a lower level of
selling expense than other sales.

General  and  Administrative  Expenses.   General  and  administrative  expenses
increased  29% to $3.7 million or 3.7% of net sales in 1996 from $2.8 million or
2.9% of net sales in 1995. This increase was primarily due to increased  payroll
expense for  management  information  systems and new business  development,  to
enhance infrastructure and explore new areas for growth.

Research and Development  Expenses.  Research and development expenses increased
60% to $2.9  million  or 2.9% of net sales in 1996 from $1.8  million or 1.9% of
net sales in 1995.  The increase was  primarily due to the addition of personnel
to support the Company's development efforts in a number of new areas, including
the remote  access and ISDN areas,  and to costs  associated  with  domestic and
international regulatory approvals.


<PAGE>

Interest Income,  Net. Net interest income increased to $293,000 in 1996 from an
expense of $33,000 in 1995. The increase was the result of the Company's  higher
average cash balances  during the last three  quarters of 1996 compared to 1995.
The Company  completed a secondary  offering in April of 1996 which raised a net
$11,573,218.  These funds were used to pay off the line of credit which was used
during  1995 as well as to fund  future  operations.  Any  remaining  funds were
invested in various financial instruments generating interest income.

Provision for Income Taxes. The Company's  effective tax rate decreased to 35.7%
in 1996 from 38.5% in 1995 due to the benefit of increased foreign sales through
the Company's Foreign Sales Corporation  ("FSC") and a decrease in the effective
state income tax rate.

Year Ending December 31, 1995 Compared to Year Ending December 31, 1994

Net Sales.  Net sales  increased 42% to $97.0 million in 1995 from $68.2 million
in 1994. This increase was primarily  attributable to increased unit sales,  and
to a small increase in the average selling price of the Company's  products as a
result of a change in product  mix.  During 1995 sales of the  Company's  higher
priced  V.34  faxmodems  (products  with  28,800 bps data  transmission  speeds)
increased as a percentage of net sales  throughout  the year. The effect of this
change in sales mix was partially offset by price reductions. However, the price
declines in most product  categories  were more modest than in prior years.  The
Company  believes  that  this  relative  price  stability  was  due in part to a
widespread  shortage of modem chipsets during the year. The Company  experienced
increases in net sales in all of its major sales  channels  during 1995 compared
to 1994. The Company's sales in the United States (excluding sales to OEMs) grew
18% to $66.8 million in 1995 compared to 1994,  international  sales  (excluding
sales to OEMs) grew 217% to $17.3 million, with Western Europe and Japan leading
the growth, and worldwide OEM sales grew 118% to $12.1 million.

Gross  Profit.  Gross profit as a percentage  of net sales  improved to 24.3% in
1995  from  21.0% in  1994.  This  improvement  in gross  margin  was  primarily
attributable to the increased  percentage of net sales of the higher priced V.34
faxmodems,  increased  production  efficiencies  related to the higher volume of
sales and decreased raw materials  costs for certain of the Company's  products.
These  increases  were partially  offset by lower margins  received on increased
sales to OEMs, price  reductions for certain of its products,  and the Company's
additions to inventory reserves reflecting its increased inventory levels at the
end of the year.  In 1994 the  Company's  gross  margin  of 21.0% was  partially
attributable to unusually  rapid price declines during the year,  which resulted
in significant charges for price protection.

Selling Expenses.  Selling expenses increased 37% to $9.0 million or 9.3% of net
sales in 1995 from $6.6  million or 9.7% of net sales in 1994.  The increase was
primarily  attributable  to costs  related  to the  Company's  increased  sales,
including an increase in selling commissions,  increased cooperative advertising
allowances to the Company's high-volume retailer customers in North America, and
increased  payroll  expenses  attributable  to  personnel  additions  in  sales,
technical  support and customer  service.  The decrease in selling expenses as a
percentage of net sales was primarily  attributable  to the Company's  increased
percentage  of OEM  sales,  which  generally  require a lower  level of  selling
expense than other sales.

General  and  Administrative  Expenses.   General  and  administrative  expenses
increased  60% to $2.8 million or 2.9% of net sales in 1995 from $1.8 million or
2.6% of net sales in 1994. The increase was primarily  attributable to increased
expenses  incurred to support  the  Company's  increased  sales,  including  the
addition of personnel,  and the increase in the  Company's  reserve for doubtful
accounts.

Research and Development  Expenses.  Research and development expenses increased
47% to $1.8  million  or 1.9% of net sales in 1995 from $1.2  million or 1.8% of
net sales in 1994.  The increase was primarily  attributable  to the addition of
personnel to support the Company's development efforts,  including the hiring of
specialists  in ISDN  technology,  and to costs  associated  with  international
regulatory approvals, reflecting the Company's international expansion.

Interest  Expense,  Net. Net interest  expense  declined to $33,000 in 1995 from
$75,000 in 1994.  The decrease was the result of the  Company's  higher  average
cash balances  during the first three  quarters of 1995 compared to 1994,  which
partially  offset a higher net interest  expense in the fourth  quarter of 1995,
reflecting the Company's borrowings to support its higher inventory and accounts
receivable levels.


<PAGE>

Provision for Income Taxes. The Company's  effective tax rate decreased to 38.5%
in 1995 from 39.2% in 1994 due to the benefit of increased foreign sales through
the Company's  Foreign Sales  Corporation  ("FSC").  The effective tax rates are
lower than statutory  rates because of research and  development tax credits and
FSC tax credits.

Liquidity and Capital Resources

On December 31, 1996 the Company had working capital of $41.6 million, including
$9,172,186 in cash and cash  equivalents,  an increase in working capital of 73%
from $24.1  million on  December  31,  1995.  In  addition,  the  Company  had a
commitment  from a bank to renew a $10.0 million  revolving  bank line of credit
which expired on May 31, 1996 of which $2.5 million was  outstanding at December
31, 1995. The renewed line of credit  agreement was  consummated in January 1997
and expires  August 30, 1997.  This line of credit bears  interest at the bank's
prime rate (8.25% on December 31, 1996). At the Company's  option,  it may elect
to borrow funds at the London Interbank Borrowing Rate (LIBOR) plus 1.5%. (7.03%
on December  31,  1996).  The line of credit is unsecured  and contains  certain
financial  and other  covenants.  On April 11,  1996,  the  Company  completed a
secondary  offering of 800,000 shares of its Common Stock.  The offering  raised
net  proceeds  of  $11,573,218.  The  Company  used  the net  proceeds  to repay
$2,500,000  outstanding  under  its line of  credit  and for  general  corporate
purposes,  including  working  capital,  new product  development,  expansion of
facilities,  expansion of the Company's  presence in  international  markets and
potential  acquisitions.  Any amounts  repaid under the Company's line of credit
may be reborrowed by the Company.

In 1996 the Company's net cash used in operating  activities  was  approximately
$1.4 million.  During that period inventory and accounts receivable decreased by
$5.2  million and $1.9  million  respectively.  The  decrease in  inventory  was
primarily due to the Company's efforts to reduce inventory levels,  particularly
with  respect to lower speed  faxmodems.  The Company  designs its  faxmodems to
accommodate  last-minute  insertion of the  high-cost  chipsets  and  unexpected
delays in the delivery of these  chipsets can result in increased  raw materials
and  work-in-process  inventory.  Increased  levels of inventory  may  adversely
affect the Company's  liquidity and increase the risk of inventory  obsolescence
or a decline in the market  value of such  inventory.  The  decrease in accounts
receivable was primarily  attributable  to lower fourth quarter sales in 1996 as
compared to fourth quarter sales in 1995. These sources of cash flow were offset
by  reduction  of accounts  payable and accrued  expenses of $10.2  million.  An
additional  source  of funds was the  Company's  $2.5  million  net  income.  An
additional  use of funds was the  increase in prepaid  and other  assets of $1.2
million.

The  Company's  capital  expenditures  in 1996  of  approximately  $1.4  million
consisted  primarily of the Company's purchase of leasehold  improvements to the
new manufacturing facility occupied in the third quarter,  computer hardware and
software,  continued  renovations  to its  headquarters,  and purchases of other
equipment and tooling. In addition, on June 24, 1996, the Company issued 102,641
shares of common stock to acquire certain assets of Tribe Computer  Works,  Inc.
including  intellectual  property,  inventory,  and property and equipment.  The
acquisition  was recorded using the purchase  method of accounting,  whereby the
net assets  acquired were recorded at their estimated fair values and the excess
of the cost over the fair  value of the  assets  acquired  of $1.7  million  was
allocated to goodwill that is being amortized over 10 years.

During 1996 financing activities provided the Company $11.9 million of cash. The
Company  realized net proceeds of $11.6 million from the sale of 800,000  shares
of its common stock in a registered  offering on a direct  placement  basis, and
proceeds of $2.8 million from the exercise of stock options. These proceeds were
offset by $2.5 million of repayments of the Company's revolving line of credit.

The Company believes that its existing cash,  together with funds generated from
operations  and available  sources of financing,  will be sufficient to meet its
normal working capital requirements.


<PAGE>

Other

A portion of the  Company's  revenues are subject to the risks  associated  with
international  sales.   Although  most  of  the  Company's  product  prices  are
denominated  in the United  States  currency,  customers  in  foreign  countries
generally  evaluate  purchases of products  such as those sold by the Company on
the purchase price expressed in the customer's currency.  Therefore,  changes in
foreign  currency  exchange  rates  may  adversely  affect  the  demand  for the
Company's products.

The company has adopted  Statement of Financial  Accounting  Standards  No. 123,
"Accounting  for Stock Based  Compensation"  ("SFAS 123").  As permitted by SFAS
123, the Commpany  measures  compensation  cost in  accordance  with  Accounting
Principles  Board  Opinion  No. 25 (APB  25),  "Accounting  for Stock  Issued to
Employees".  Therefore,  the  adoption  of  SFAS  123 was  not  material  to the
Company's  financial condition or results of operations;  however,  the proforma
impact on earnings and  earnings  per share have been  disclosed in the Notes to
the Consolidated Financial Statements as required by SFAS 123 for companies that
continue to account for stock options under APB25

<PAGE>



ITEM 8 - FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

                                                ZOOM TELEPHONICS, INC.
                                      INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
                                                     AND SCHEDULE

<TABLE>
<S>                                                                                                                   <C>
                                                                                                                      Page
Index to Consolidated Financial Statements                                                                              26
Independent Auditors' Report                                                                                            27
Consolidated Balance Sheets as of December 31, 1995 and 1996                                                            28
Consolidated Statements of Income for the years ending December 31, 1994, 1995 and 1996                                 29
Consolidated Statements of Stockholders' Equity for the years ending December 31, 1994, 1995 and 1996                   30
Consolidated Statements of Cash Flows for the years ending December 31, 1994, 1995 and 1996                             31
Notes to Consolidated Financial Statements                                                                              32
Schedule II:  Valuation and Qualifying Accounts Fiscal Years Ending December 31, 1994, 1995 and 1996
</TABLE>

ITEM 9 - CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE

There were no changes in or  disagreements  with  accountants  on  accounting or
financial disclosure during the period covered by this report.



<PAGE>


                                                        PART III

ITEM 10 - DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

Information required by this item appears under the caption "Executive Officers"
in Part 1, Item 1 -- Business,  and under the captions  "Election of  Directors"
and  "Compliance  With  Section  16(a) of the  Securities  Exchange  Act" in the
Company's  definitive  proxy statement for its 1997 annual meeting which will be
filed with the SEC in April 1997 pursuant to Regulation 14A, and is incorporated
herein by reference.


ITEM 11 - EXECUTIVE COMPENSATION

Information  required  by  this  item  appears  under  the  captions  "Executive
Compensation,"  "Directors  Compensation" and "Proposal No. 2", in the Company's
definitive  proxy statement for its 1996 annual meeting which will be filed with
the SEC in April, 1997,  pursuant to Regulation 14A, and is incorporated  herein
by reference.


ITEM 12 - SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

Information  required  by this item  appears  under the  captions  "Election  of
Directors" and "Security  Ownership of Certain Beneficial Owners and Management"
in the Company's  definitive  proxy  statement for its 1997 annual meeting which
will be filed with the SEC in April,  1997,  pursuant to Regulation  14A, and is
incorporated herein by reference.


ITEM 13 - CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

None.



<PAGE>


                                                         PART IV

ITEM 14 - EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K

<TABLE>
<S><C>         <C>  <C>
(a)                 Financial Statements, Schedules and Exhibits:

   (1),(2)          The financial statements and required schedules are indexed under
                    Item 8.

   (3)              Exhibits required by the Exhibit Table of Item 601 of SEC Regulation  S-K.  (Exhibit numbers refer to numbers in
                    the Exhibit Table of Item 601.)

               3.1  Articles  of  Continuance,  filed as  Exhibit  3.1 to the  Annual  Report on Form 10-K for the fiscal year ended
                    December 31, 1991 (the "1991 Form 10-K"). *

               3.2  By-Law  No. 1 of Zoom Telephonics, Inc., filed as Exhibit 3.2 to the 1991 Form 10-K. *

               3.3  By-Law  No. 2 of Zoom Telephonics, Inc., filed as Exhibit 3.3 to the 1991 Form 10-K. *

            **10.1  1991 Stock Option Plan,  as amended,  of Zoom  Telephonics,  Inc.,
                    filed as Exhibit  10.1 to the  Annual  Report on Form 10-K for the
                    fiscal year ended December 31, 1994 (the "1994 Form 10-K"). *

            **10.2  1991 Director Stock Option Plan, of Zoom Telephonics, Inc., filed as Exhibit 10.2 to the 1994 Form 10-K. *

              10.3  Commercial  Revolving  Line  of  Credit  Agreement  by  and  between  Zoom Telephonics, Inc. and  Shawmut  Bank,
                    N.A., filed as Exhibit 10.3 to the 1995 Form 10-K. *

              10.4  Commercial  Revolving  Line of  Credit  Promissory  Note of Zoom  Telephonics,  Inc. in favor of  Shawmut  Bank,
                    N.A. , filed as Exhibit 10.4 to the 1995 Form 10-K. *

              10.5  Lease between Zoom Telephonics and "E" Street Associates, filed as
                    Exhibit 10.5 to the June 1996 Form 10-Q*

              10.6  Form of Indemnification  Agreement, filed as Exhibit 10.6 to the June 1996 Form 10-Q. *

              10.7  Revolving Credit Facility Provided by Fleet National Bank for Zoom Telephonics, Inc..

              11.   Statement re computation of per share earnings.

              21.   Subsidiaries.

              23.   Consent of KPMG Peat Marwick LLP.

              27.   Financial Data Schedule

(b)                 Reports on Form 8-K.

                    No reports on Form 8-K have been filed during the last quarter for 
                    the period covered by this report.

(c)                 Exhibits - See Item  14(a)(3)  above for a list of Exhibits  incorporated  herein by reference orfiled with this
                    Report.

(d)                 Schedules - Schedule II:  Valuation  and  Qualifying Accounts. Schedules other than those listed above have been
                    omitted since they are either inapplicable or not required
</TABLE>
- -------------
      *       In accordance  with Rule 12b-32 under the Securities  Exchange Act
              of 1934, as amended, reference is made to the documents previously
              filed with the Securities and Exchange Commission, which documents
              are hereby incorporated by reference.

     **       Compensation Plan or Arrangement.


<PAGE>


- -------------------------------------------------------------------------------
                                   SIGNATURES
- -------------------------------------------------------------------------------

          Pursuant to the  requirements of Section 13 or 15(d) 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.


                                                         ZOOM TELEPHONICS, INC.
                                                         (Registrant)


                                              By:        /s/ Frank B. Manning
                                                    Frank B. Manning, President

Date:  March 28 , 1997

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


               Signature        Title(s)                 Date




/s/ Frank B. Manning            Principal Executive Officer and Director 
- ---------------------------                        March 28, 1997 
Frank  B. Manning




/s/ Steven T. Shedd             Principal Financial and Accounting Officer 
- ---------------------------                        March 28, 1997
Steven T. Shedd




/s/ Peter R. Kramer             Director                                      
- ---------------------------                        March 28, 1997
Peter R. Kramer




/s/ Bernard Furman              Director                                      
- ---------------------------                        March 28, 1997
Bernard Furman



/s/ L. Lamont Gordon            Director                                
- ---------------------------                        March 28, 1997
L. Lamont Gordon




/s/ J. Ronald Woods             Director 
- ---------------------------                        March 28, 1997 
J. Ronald Woods

<PAGE>




                                               ZOOM TELEPHONICS, INC.
                                     INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
                                                  AND SCHEDULE

<TABLE>
<CAPTION>
                                                                                                                      Page


<S>                                                                                                                     <C>
Independent Auditors' Report                                                                                            27
Consolidated Balance Sheets as of December 31, 1995 and 1996                                                            28
Consolidated Statements of Income for the years ending December 31, 1994, 1995 and 1996                                 29
Consolidated Statements of Stockholders' Equity for the years ending December 31, 1994, 1995 and 1996                   30
Consolidated Statements of Cash Flows for the years ending December 31, 1994, 1995 and 1996                             31
Notes to Consolidated Financial Statements                                                                              32
Schedule II: Valuation and Qualifying Accounts Fiscal Year Ending December 31, 1994, 1995 and 1996                      41
</TABLE>


<PAGE>







                          Independent Auditors' Report


The Board of Directors and Stockholders
Zoom Telephonics, Inc.:


We have audited the consolidated financial statements of Zoom Telephonics,  Inc.
and  subsidiaries  as listed in the  accompanying  index. In connection with our
audits  of the  consolidated  financial  statements,  we have also  audited  the
financial  statement  schedule  as  listed  in  the  accompanying  index.  These
consolidated  financial  statements and the financial statement schedule are the
responsibility of the Company's management.  Our responsibility is to express an
opinion on these consolidated financial statements based on our audits.

We  conducted  our  audits  in  accordance  with  generally   accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement.  An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements.  An audit also includes
assessing the  accounting  principles  used and  significant  estimates  made by
management,  as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated  financial statements referred to above present
fairly, in all material  respects,  the financial  position of Zoom Telephonics,
Inc. and subsidiaries as of December 31, 1995 and 1996, and the results of their
operations and their cash flows for each of the years in the  three-year  period
ended  December 31, 1996,  in  conformity  with  generally  accepted  accounting
principles.  Also in our opinion, the related financial statement schedule, when
considered in relation to the basic consolidated financial statements taken as a
whole,  presents  fairly,  in all material  respects,  the information set forth
therein.




                                                   KPMG Peat Marwick LLP



Boston, Massachusetts
February 18, 1997


<PAGE>


                             ZOOM TELEPHONICS, INC.
                           CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>

                                                                                                      December 31
     Assets                                                                                      1995              1996
     ------                                                                                      ----              ----

<S>                                                                                 <C>                  <C>
Current assets:
     Cash and cash equivalents                                                      $         150,671         9,172,186
     Accounts receivable, net of reserves for doubtful
        accounts, returns, and allowances of $2,717,463
        in 1995 and $3,564,101 in 1996 (notes 9 and 10)                                    20,396,314        18,970,041
     Inventories (note 3)                                                                  24,173,557        19,057,575
     Recoverable income taxes                                                                       -         1,219,000
     Deferred tax assets (note 8)                                                           1,513,461         2,032,683
     Prepaid expenses and other assets                                                        221,907           532,808
                                                                                       --------------    --------------
               Total current assets                                                        46,455,910        50,984,293
                                                                                       --------------    --------------

Property, plant and equipment, net (note 4)                                                 3,138,907         4,081,406
Goodwill, net of accumulated amortization of $76,149                                                -         1,558,764
Other assets                                                                                        -           157,691
                                                                                       --------------    --------------

                                                                                    $      49,594,817        56,782,154
                                                                                       ==============    ==============

               Liabilities and Stockholders' Equity

Current liabilities:
     Credit line payable (note 5)                                                   $       2,500,000                 -
     Accounts payable                                                                      18,635,269         8,074,472
     Accrued expenses                                                                         948,911         1,352,725
     Income tax payable                                                                       236,493                 -
                                                                                       --------------    --------------
               Total current liabilities                                                   22,320,673         9,427,197
                                                                                       --------------    --------------

Commitments and contingencies (note 4)

Stockholders' equity (notes 6 and 7):
     Common stock, no par value.  Authorized 25,000,000 shares;
        issued and outstanding 6,200,930 shares at December 31,
        1995 and 7,446,842 shares at December 31, 1996                                      7,289,577        24,890,468
     Retained earnings                                                                     19,984,567        22,464,489
                                                                                       --------------    --------------
               Total stockholders' equity                                                  27,274,144        47,354,957
                                                                                       --------------    --------------

                                                                                    $      49,594,817        56,782,154
                                                                                       ==============    ==============
</TABLE>



See accompanying notes to consolidated financial statements.


<PAGE>


                             ZOOM TELEPHONICS, INC.
                        CONSOLIDATED STATEMENTS OF INCOME
                        December 31, 1994, 1995 and 1996

<TABLE>
<CAPTION>

                                                                                1994             1995              1996
                                                                                ----             ----              ----

<S>                                                               <C>                  <C>               <C>        
Net sales (note 9)                                                $       68,179,619       96,997,313       100,195,021
Cost of goods sold                                                        53,875,107       73,401,620        79,803,297
                                                                      --------------   --------------    --------------
           Gross profit                                                   14,304,512       23,595,693        20,391,724
                                                                      --------------   --------------    --------------

Operating expenses:
     Selling                                                               6,573,150        9,023,443        10,215,528
     General and administrative                                            1,775,853        2,839,775         3,674,134
     Research and development                                              1,249,819        1,835,482         2,940,152
                                                                      --------------   --------------    --------------
                                                                           9,598,822       13,698,700        16,829,814
                                                                      --------------   --------------    --------------

           Operating income                                                4,705,690        9,896,993         3,561,909

Interest income                                                                6,905           81,893           461,762
Interest expense                                                             (81,632)        (115,206)         (169,248)
                                                                      --------------   --------------    --------------
           Interest income (expense), net                                    (74,727)         (33,313)          292,514
                                                                      ---------------  --------------    --------------

           Income before income taxes                                      4,630,963        9,863,680         3,854,423

Income tax expense (note 8)                                                1,817,385        3,800,000         1,374,501
                                                                      --------------   --------------    --------------

           Net income                                             $        2,813,578        6,063,680         2,479,922
                                                                      ==============   ==============    ==============

Income per common and common equivalent share (note 2):
     Primary                                                            $    .47              .99               .35
                                                                           =====              ===             =====

     Fully diluted                                                      $    .47              .98               .35
                                                                           =====              ===             =====

Weighted average common and common equivalent shares:
     Primary                                                               6,010,282        6,126,203         7,162,391
                                                                      ==============   ==============    ==============
     Fully diluted                                                         6,013,668        6,173,265         7,162,391
                                                                      ==============   ==============    ==============
</TABLE>


See accompanying notes to consolidated financial statements.


<PAGE>


                             ZOOM TELEPHONICS, INC.
                 CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY



<TABLE>
<CAPTION>
                                                                                                               Total
                                                             Common stock                  Retained        stockholders'
                                                         Shares           Amount           earnings           equity

<S>                                                    <C>            <C>              <C>                 <C>       
Balance at December 31, 1993                           5,989,430         5,091,835       11,107,309          16,199,144

    Net income                                                -                 -         2,813,578           2,813,578
    Exercise of stock options                             25,050           275,549               -              275,549
    Tax benefit from exercise of nonqualified stock
      options (note 7)                                        -             14,750               -               14,750
                                                       ---------         ---------        ---------          ----------

Balance at December 31, 1994                           6,014,480         5,382,134       13,920,887          19,303,021

    Net income                                               -                 -          6,063,680           6,063,680
    Exercise of stock options                            186,450         1,570,350              -             1,570,350
    Tax benefit from exercise of nonqualified stock
      options (note 7)                                       -             337,093              -               337,093
                                                       ---------         ---------        ---------          ----------

Balance at December 31, 1995                           6,200,930         7,289,577       19,984,567          27,274,144

    Net income                                               -                 -          2,479,922           2,479,922
    Proceeds from stock offering (note 6)                800,000        11,573,218              -            11,573,218
    Stock issuance for product line acquisition          102,641         1,590,929              -             1,590,929
    Exercise of stock options                            343,271         2,825,543              -             2,825,543
    Tax benefit from exercise of nonqualified stock
      options (note 7)                                       -           1,611,201              -             1,611,201
                                                       ---------        ----------        ---------         ----------


Balance at December 31, 1996                           7,446,842      $ 24,890,468     $ 22,464,489        $ 47,354,957
                                                       =========        ==========       ==========          ==========

</TABLE>

See accompanying notes to consolidated financial statements.


<PAGE>


                             ZOOM TELEPHONICS, INC.
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                        December 31, 1994, 1995 and 1996

<TABLE>
<CAPTION>
                                                                                1994             1995              1996
                                                                                ----             ----              ----

Cash flows from operating activities:
<S>                                                                    <C>             <C>               <C>      
     Net income                                                        $   2,813,578        6,063,680         2,479,922
     Adjustments to reconcile net income to net cash
        provided by (used in) operating activities:
           Depreciation and amortization                                     193,697          252,400           674,162
           Deferred income taxes                                            (558,277)        (416,789)         (519,222)
           Changes in assets and liabilities:
               Accounts receivable                                        (4,263,435)      (7,609,226)        1,426,273
               Inventories                                                 1,705,332      (14,624,140)        5,211,667
               Prepaid expenses and other assets                             135,607           28,553          (715,728)
               Recoverable income taxes                                       72,915                -        (1,219,000)
               Accounts payable and accrued expenses                        (232,872)      12,280,557       (10,156,983)
               Income tax payable                                            209,241           27,252          (236,493)
               Tax benefit upon exercise of nonqualified
                  stock options                                               14,750          337,093         1,611,201
                                                                       -------------   --------------    --------------
                         Net cash provided by (used in)
                             operating activities                             90,536       (3,660,620)       (1,444,201)
                                                                       -------------   --------------    ---------------

Cash flows from investing activities:
     Purchase of certain assets of a business product line                       -                -             (81,375)
     Additions to property, plant and equipment                             (769,077)      (1,234,459)       (1,351,670)
                                                                       -------------   --------------    --------------

                         Net cash used in investing activities              (769,077)      (1,234,459)       (1,433,045)
                                                                       --------------  ---------------   ---------------

Cash flows from financing activities:
     Net borrowings (repayments) under revolving
        bank line of credit                                                      -          2,500,000        (2,500,000)
     Proceeds from the issuance of common stock                                  -                -          11,573,218
     Exercise of nonqualified stock options                                  275,549        1,570,350         2,825,543
                                                                       -------------    -------------     -------------
                         Net cash provided by financing
                             activities                                      275,549        4,070,350        11,898,761
                                                                       -------------    -------------     -------------

Net increase (decrease) in cash and cash equivalents                        (402,992)        (824,729)        9,021,515

Cash and cash equivalents at beginning of year                             1,378,392          975,400           150,671
                                                                       -------------    -------------     -------------

Cash and cash equivalents at end of year                           $         975,400          150,671         9,172,186
                                                                       =============    =============     =============

</TABLE>

See accompanying notes to consolidated financial statements.


<PAGE>


                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements
                           December 31, 1995 and 1996
                                       
(1)     Incorporation and Nature of Operations

        Zoom  Telephonics,  Inc.  (the  "Company")  is  incorporated  under  the
          federal  laws of  Canada  (Canada   Business  Corporations  Act).  Its
          principal  business  activity,  the design,  production, and marketing
          of faxmodems and other communication peripherals, is conducted through
          its wholly-owned  subsidiary,  Zoom Telephonics,  Inc. ("Zoom US"), a 
          Delaware corporation based in Boston, Massachusetts.

(2)     Significant Accounting Policies

        (a)  Basis of Presentation
        Theconsolidated  financial  statements  are prepared in accordance  with
           United States generally accepted accounting principles and are stated
           in US dollars.  Any  differences  between US and  Canadian  generally
           accepted accounting  principles would have an insignificant impact on
           the consolidated financial statements.

        The preparation  of financial  statements in conformity  with  generally
            accepted accounting principles requires management to make estimates
            and  assumptions  that  affect  the  reported  amounts of assets and
            liabilities  and disclosure of contingent  assets and liabilities at
            the date of the  financial  statements  and the reported  amounts of
            revenue and expenses during the reporting period. Actual results may
            differ from estimates.

        (b)  Principles of Consolidation
        The consolidated   financial  statements  include  the  accounts of  the
           Company   and  its   wholly-owned   subsidiary,   Zoom  US,  and  its
           wholly-owned  subsidiaries,  Zoom  Foreign  Sales  Corporation,  Zoom
           Telephonics,   Ltd.  (a  United   Kingdom   Corporation)   and  Tribe
           Acquisition  Corporation.  All intercompany balances and transactions
           have been eliminated in consolidation.

        (c)  Cash and Cash Equivalents
        The Company considers all investments having original maturities of less
           than 90 days to be cash equivalents.

        (d)  Inventories
        Inventories  are  carried  at the  lower  of  cost  or  market.  Cost is
           determined using the first-in, first-out (FIFO) method.

        (e)  Property, Plant and Equipment
        Property,  plant  and  equipment  is  stated  at cost.  Depreciation  of
           property,  plant and equipment is provided by using the straight-line
           method at rates  sufficient to amortize the costs of the fixed assets
           over their  estimated  useful  lives.  In accordance  with  Financial
           Accounting  Standards  Board  statement No. 121,  "Accounting for the
           Impairment  of  Long-Lived  Assets  and for  Long-Lived  Assets to be
           Disposed  Of,"  the  Company   reviews  its  long-lived   assets  for
           impairment whenever events or changes in circumstances  indicate that
           the  carrying  amount  of an asset may not be  recoverable.  If it is
           determined  that the  carrying  amount  of an asset  cannot  be fully
           recovered, an impairment loss is recognized.
                                                                    (Continued)


<PAGE>


                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements

        (f)  Goodwill
        Goodwill  results  from the excess of cost over fair value of net assets
            acquired  for  the  purchase  of a  product  line  in  June  1996 is
            amortized  on a  straight-line  basis  over 10  years.  The  Company
            evaluates the  recoverability and remaining life of its goodwill and
            determines  whether the goodwill  should be  completely or partially
            written off or the amortization period accelerated. The Company will
            recognize an impairment of goodwill if undiscounted estimated future
            operating cash flows of the acquired  product line are determined to
            be less  than  the  carrying  amount  of  goodwill.  If the  Company
            determines  that the goodwill has been impaired,  the measurement of
            the impairment will be equal to the excess of the carrying amount of
            the goodwill over the amount of the  undiscounted  estimated  future
            estimated  cash flows.  If an  impairment of goodwill were to occur,
            the Company would reflect the impairment  through a reduction in the
            carrying value of goodwill.

        (g)  Income Taxes
        TheCompany  accounts  for  income  taxes  under the asset and  liability
           method.  Under this method,  deferred tax assets and  liabilities are
           recognized   for  the  future  tax   consequences   attributable   to
           differences  between  the  financial  statement  carrying  amounts of
           existing assets and  liabilities  and their  respective tax bases and
           operating loss and tax credit carryforwards.  Deferred tax assets and
           liabilities are measured using enacted tax rates expected to apply to
           taxable income in the years in which those  temporary  differencs are
           expected  to be  recovered  or settled.  The effect on  deferred  tax
           assets  and  liabilities  of a change in tax rates is  recognized  in
           income in the period that includes the enactment date.

        (h)  Income Per Common Share
        Primary and fully  diluted  earnings per share are based on the weighted
           average number of common shares  outstanding,  including the dilutive
           effect of stock options.

        (i)  Revenue Recognition
        Sales are recognized upon shipment of products to customers.

        (j) Financial Instruments
        Financial   instruments  of  the  Company   consist  of  cash  and  cash
            equivalents,  accounts  receivable,  accounts  payable  and  accrued
            expenses.   The  carrying  amount  of  these  financial  instruments
            approximates fair value.

        (k)  Stock Based Compensation
        The Company has adopted Statement of Financial Accounting  Standards No.
           123,  "Accounting  for Stock Based  Compensation"  ("SFAS  123").  As
           permitted  by  SFAS 123, the Company  measures  compensation  cost in
           accordance with Accounting  Principles Board Opinion No. 25 (APB 25),
           "Accounting for Stock Issued to Employees".  Therefore,  the adoption
           of SFAS 123 was not material to the Company's  financial condition or
           results of operations;  however,  the proforma impact on earnings and
           earnings  per  share  have  been   disclosed  in  the  Notes  to  the
           Consolidated  Financial  Statements  as  required  by  SFAS  123  for
           companies that continue to account for stock options under APB25.

        (l)  Reclassifications
        Certain reclassifications to the 1994 and 1995 financial statements have
           been   made   to   conform   to   the   1996   presentation.    These
           reclassifications were not material.
                                                                   (Continued)


<PAGE>


                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements


(3)     Inventories

        Inventories consist of the following at December 31:

<TABLE>
<CAPTION>
                                                                                    1995                  1996
                                                                                    ----                  ----

<S>                                                                      <C>                        <C>       
           Raw materials                                                 $    14,612,670            11,778,311
           Work in process                                                     5,582,922             2,968,064
           Finished goods                                                      3,977,965             4,311,200
                                                                           -------------             ---------

                                                                         $    24,173,557            19,057,575
                                                                           =============            ==========
</TABLE>

(4)     Property, Plant and Equipment

        Property, plant and equipment consists of the following at December 31:

                                                                           
<TABLE>
<CAPTION>
                                                                                                            Estimated
                                                                                    1995            1996    useful lives
                                                                                    ----            ----    ------------

<S>                                                                      <C>                   <C>          <C>  
           Land                                                          $       309,637         309,637       -
           Buildings and improvements                                          1,808,814       1,939,071    31.5 years
           Leasehold improvements                                                    -           469,583    5 years
           Machinery and equipment                                             1,398,919       2,093,361    5 years
           Molds, tools and dies                                                 645,978         807,573    5 years
           Office furniture and fixtures                                         349,333         433,968    5 years
                                                                            ------------       ---------
                                                                               4,512,681       6,053,193

           Less accumulated depreciation                                       1,373,774       1,971,787
                                                                            ------------       ---------

                                                                         $     3,138,907       4,081,406
                                                                            ============       =========
</TABLE>

        In August  1996,  the  Company  entered  into a  five-year  lease  for a
           manufacturing and warehousing facility in Boston,  Massachusetts.  At
           the end of the  initial  lease  term,  the  Company  has an option to
           extend the lease for an  additional  five  years.  In July 1996,  the
           Company  entered  into a  two-year  lease for an office  facility  in
           Alameda,  California. The Company also leases office space in Dallas,
           Texas and off-site storage facilities in Boston, Massachusetts.  Rent
           expense  was  $39,211,  $46,897  and  $275,673  for the years  ending
           December  31,  1994,  1995 and  1996,  respectively.  Minimum  rental
           payments,  excluding  executory  costs required under these operating
           leases  for the next five  years are as  follows:  $342,008  in 1997;
           $336,978 in 1998;  $337,134 in 1999; $348,426 in 2000 and $203,249 in
           2001.

                                                                    (Continued)


<PAGE>


                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements



(5)     Available Credit

        At December 31, 1995, the Company had available a revolving bank line of
           credit of $10,000,000 which expired on May 31, 1996.  Interest on the
           note was payable at the bank's prime rate of interest  (8.25 and 8.5%
           at December  31, 1996 and 1995).  No amounts were  outstanding  under
           this line of credit as of December  31,  1996.  There was  $2,500,000
           outstanding  under this line of credit as of December 31,  1995.  The
           Company has a commitment  by the bank to renew the line again through
           August 30, 1997. This agreement was consummated in January 1997. This
           revolving line of credit is unsecured and contains certain  financial
           and other covenants.

(6)     Secondary Stock Offering

        On  April 11, 1996 the Company sold  800,000  shares of its common stock
            in a registered offering on a direct placement basis for proceeds of
            $11,573,218 net of expenses and underwriters  fees of $926,782.  The
            net proceeds were used to repay certain  obligations  of the Company
            and to fund future growth.

(7)     Stock Option Plans

        Employee Stock Option Plan
        The Stock  Option  Plan is  for  officers  and  certain   full-time  and
           part-time  employees  of the Company.  Non-employee  directors of the
           Company are not entitled to  participate  under this plan.  The Stock
           Option Plan  provides for the  availability  of  1,500,000  shares of
           common stock for the granting of employee stock  options.  Under this
           plan stock  options  shall be granted at the  discretion of the Stock
           Option  Committee  of the Board of  Directors  at an option price not
           less  than the  fair  market  value of the  stock.  The  options  are
           exercisable  in accordance  with terms  specified by the Stock Option
           Committee  not to exceed  ten years  from the date of grant.  Options
           outstanding under this plan are as follows:

<TABLE>
<CAPTION>
                                                                        Number of shares          Option price
                                                                          under option              per share

<S>                                                                      <C>                   <C> 
           Balance at December 31, 1993                                      389,900                      9.54
               Granted                                                       460,500                      8.00
               Exercised                                                     (25,050)                    11.00
               Expired                                                      (382,550)                    11.85
                                                                         -----------            --------------

           Balance at December 31, 1994                                      442,800                      8.00
               Granted                                                       229,950                     11.13
               Exercised                                                    (150,450)                     8.00
               Expired                                                       (56,100)                     8.00
                                                                         -----------            --------------

           Balance at December 31, 1995                                      466,200                      9.54
               Granted                                                       972,850                     12.44
               Exercised                                                    (343,271)                     8.23
               Expired                                                      (526,562)                    16.37
                                                                         -----------            --------------

           Balance at December 31, 1996                                      569,217           $          8.29
                                                                         ===========            ===============
</TABLE>

                                                                    (Continued)


<PAGE>


                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements


        There were 57,000  options  exercisable  under this plan at December 31,
        1996.

        The Company recognized a tax benefit of $14,750, $337,093 and $1,611,201
           in  1994,  1995  and  1996,   respectively,   upon  the  exercise  of
           nonqualified  stock options under the  aforementioned  employee stock
           option plan. These benefits have been recorded to common stock.

        1991 Directors Stock Option Plan

        In 1991, the Company established the Directors Stock Option Plan. Shares
           of common  stock  were  registered  for  issuance  under this plan in
           accordance with the Securities Act of 1933. This plan was established
           for all  directors  of the Company  except for any  director who is a
           full-time  employee or full-time  officer of the  Company.  Under the
           plan, each eligible director shall automatically be granted an option
           to purchase  6,000 shares of common stock on each July 10 and January
           10 of each year  beginning  July 10, 1991.  The option price shall be
           the fair market value of the stock on the date the option is granted.
           Each option shall expire two years from the grant date. There were 0,
           36,000 and 0 options exercised in 1994, 1995 and 1996,  respectively.
           At December 31, 1996 there were 54,000 options outstanding,  of which
           36,000 were  exercisable,  at exercise  prices  ranging from $7.00 to
           $17.19 per share.

        At  December 31, 1996,  there were 326,762  additional  shares available
            for grant  under both  Plans.  The per share  weighted-average  fair
            value of stock  options  granted  during 1996 and 1995 was $4.03 and
            $3.58,  respectively  on the date of grant  using the Black  Scholes
            option-pricing    model   with   the   following    weighted-average
            assumptions: 1996 - expected dividend yield 0.0%, risk-free interest
            rate of 5.05%, volatility 70%  and an  expected  life of two to four
            years;  1995 - expected dividend yield 0.0%, risk-free interest rate
            of 5.07, volatility 70% and and expected life of two years.

        The company  applies APB Opinion No. 25 in accounting  for its Plan and,
           accordingly,  no compensation  cost has been recognized for its stock
           options  in the  financial  statements.  Had the  Company  determined
           compensation  cost  based on the fair value at the grant date for its
           options  under SFAS No. 123, the  Company's net income and net income
           per common and common equivalent share would have been reduced to the
           pro forma amounts indicated below.

<TABLE>
<CAPTION>
                                                                                       1995          1996
                                                                                       ----          ----

<S>                                                                             <C>              <C>      
                           Net income                As reported                $ 6,063,680      2,479,922
                                                     Pro forma                  $ 5,929,829      2,100,665

                           Earnings per share        As reported                $      0.99           0.35
                                                     Pro forma                  $      0.97           0.29
</TABLE>

        Proforma net  income  reflects  only  options  granted in 1996 and 1995.
           Therefore, the full impact of calculating compensation cost for stock
           options  under  SFAS No.  123 is not  reflected  in the pro forma net
           income amounts presented above because compensation cost is reflected
           over the  options'  vesting  period of 18  months  to four  years and
           compensation cost for options granted prior to January 1, 1995 is not
           considered.
                                                                    (Continued)


<PAGE>


                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements

(8)     Income Taxes

        Income tax expense  (benefit)  attributable  to income  from  operations
        consists of:

<TABLE>
<CAPTION>
                                                                              Current          Deferred           Total
           Year ending December 31, 1994:
<S>                                                                  <C>                  <C>              <C>      
               US federal                                            $     1,821,548         (430,566)        1,390,982
               State and local                                               554,114         (127,711)          426,403
                                                                         -----------      -----------      ------------

                                                                     $     2,375,662         (558,277)        1,817,385
                                                                         ===========      ===========      ============

<CAPTION>
           Year ending December 31, 1995:
<S>                                                                  <C>                  <C>              <C>      
               US federal                                            $     3,299,680         (343,359)        2,956,321
               State and local                                               917,109          (73,430)          843,679
                                                                        ------------      -----------      ------------

                                                                     $     4,216,789         (416,789)        3,800,000
                                                                        ============      ===========      ============

<CAPTION>
           Year ending December 31, 1996:
<S>                                                                  <C>                  <C>              <C>      
               US federal                                            $     1,632,391         (428,502)        1,203,889
               State and local                                               261,332          (90,720)          170,612
                                                                        ------------      -----------      ------------

                                                                     $     1,893,723         (519,222)        1,374,501
                                                                        ============      ===========      ============
</TABLE>

        Income tax expense was  $1,817,385,  $3,800,000,  and $1,374,501 for the
           years  ending  December 31, 1994,  1995 and 1996,  respectively,  and
           differed from the amounts  computed by applying the US federal income
           tax rate of 34% to pretax  income  from  continuing  operations  as a
           result of the following:

<TABLE>
<CAPTION>
                                                                                  1994            1995             1996
                                                                                  ----            ----             ----

<S>                                                                    <C>                <C>              <C>      
           Computed "expected" US tax expense                          $     1,574,527       3,353,651        1,310,504
           Increase (reduction) in income taxes resulting from:
               State and local income taxes, net of federal
                  income tax benefit                                           281,426         556,829          112,604
               Tax benefit from foreign sales corp                             (22,950)       (116,382)         (66,271)
               General business credits                                        (14,400)           -                 -
               Other, net                                                       (1,218)          5,902           17,664
                                                                          ------------    ------------     ------------

                                                                       $     1,817,385       3,800,000        1,374,501
                                                                          ============    ============     ============
</TABLE>


                                                                  (Continued)
<PAGE>



                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements

        Total income tax expense (benefit) was allocated as follows:

<TABLE>
<S>                                                                       <C>             <C>              <C>      
           Income from operations                                            1,817,385       3,800,000          1,374,501
           Stockholders' equity, for compensation expense
               for tax purposes in excess of amounts
               recognized for financial statement purposes                     (14,750)       (337,093)        (1,611,201)
                                                                          -------------   -------------    ---------------

                                                                             1,802,635       3,462,907           (236,700)
                                                                          ============    ============     ===============
</TABLE>

        The tax effects of temporary differences  that give rise to  significant
           portions of the deferred tax assets and deferred tax  liabilities for
           the years ended December 31, 1995 and 1996 are presented below:

<TABLE>
<CAPTION>
                                                                                                 1995              1996
                                                                                                 ----              ----
           Deferred tax assets:
<S>                                                                                  <C>                   <C>    
               Allowance for bad debt                                                $        335,119           421,298
               Sales returns reserve                                                          284,437           280,029
               Price protection reserve                                                       116,460           160,281
               Other accounts receivable reserves                                              37,836            43,896
               Uniform capitalization                                                         197,390           236,007
               Inventory reserve                                                              497,100           816,690
               Vacation accrual                                                                54,867            81,073
               Warranty reserve                                                                73,140             6,035
               Other                                                                                -            40,597
                                                                                         ------------      ------------
                      Total current gross deferred tax assets                               1,596,349         2,085,906

               Canadian net operating loss carryforwards                                       40,200                 -
                                                                                         ------------      ------------

                      Total gross deferred tax assets                                       1,636,549         2,085,906
                      Less:  valuation allowance                                              (40,200)                -
                                                                                         -------------     ------------
                      Total deferred tax assets                                             1,596,349         2,085,906

           Deferred tax liabilities:
               Plant and equipment, principally due to differences in
                  depreciation                                                                (82,888)         (53,223)
                                                                                         ---------------  -------------

                      Net deferred tax assets                                        $      1,513,461      2,032,683
                                                                                         ============      =========
</TABLE>

        In assessing  the  realizability  of deferred  tax  assets,  the Company
           considered  whether it is more likely  than not that some  portion or
           all of the deferred tax asset will be realized.  Due to the fact that
           the Company has sufficient  taxable  income in the federal  carryback
           periods and  anticipates  future taxable income over periods in which
           the deductible  temporary  differences are  deductible,  the ultimate
           realizability  of  deferred  tax  assets  for  federal  and state tax
           purposes  appears more likely than not.  Federal  taxable  income for
           1994  and  1995  equaled  approximately  $5,310,000  and  $9,018,000,
           respectively.
                                                                 (Continued)


<PAGE>


                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements


(9)     Significant Customers

        Two customers accounted  for 24% of  total  sales  revenue  for the year
           ending  December 31, 1994. One customer  accounted for  approximately
           19% of total sales revenue for the year ending  December 31, 1995 and
           15% of total sales  revenue for the year ending  December  31,  1996.
           Individually,  each of these customers comprised 10% or more of total
           sales revenue during the specified  period. At December 31, 1996, two
           customers comprised approximately 40% of net accounts receivable.  At
           December 31, 1995, one customer  comprised  approximately  23% of net
           accounts receivable.

(10)    Financial Instruments

        The Company  generates  a  portion  of  its  revenues  in  international
           markets,  which  subjects its  operations  to the exposure of foreign
           currency  fluctuations.  The impact of currency  fluctuations  can be
           positive or negative in any given period.

        To minimize the adverse impact of foreign  currency  fluctuations on its
           foreign  currency-denominated net assets, the Company may use certain
           financial instruments,  primarily forward exchange contracts,  in its
           management of foreign currency exposure.  These contracts require the
           Company  to  sell  certain  foreign  currencies  for  US  dollars  at
           contractual  rates.  The Company  does not hold any forward  exchange
           contracts for trading purposes.

        Realized and unrealized foreign exchange gains and losses are recognized
           in  operating  income  and  offset  foreign  gains and  losses on the
           underlying  exposures.  During the years ending December 31, 1995 and
           1996,  foreign  currency  gains and  losses  were not  material.  The
           Company's  forward  exchange  contracts  are  revalued at the balance
           sheet date and the carrying amount approximates the fair value of the
           instruments.   At  December   31,   1996,   the   Company's   foreign
           currency-denominated  net  assets not  covered  by  forward  exchange
           contracts  were  not  material.   Other  than  the  forward  exchange
           contracts  described above, the Company has no other involvement with
           derivative financial instruments.

(11)    Product Line Acquisition

        On June 24, 1996,  the Company  issued 102,641 shares of common stock to
           acquire  certain  assets,   including   inventory  and  property  and
           equipment,  associated  with a product line of Tribe Computer  Works,
           Inc.  The  acquisition  was  recorded  using the  purchase  method of
           accounting,  whereby the net assets  acquired  were recorded at their
           estimated  fair  values and the excess of cost over the fair value of
           the assets  acquired of  $1,634,913  was allocated to goodwill and is
           being amortized over 10 years.



                                                                (Continued)
<PAGE>




                             ZOOM TELEPHONICS, INC.
                   Notes to Consolidated Financial Statements



(12)    Supplemental Disclosure of Cash Flow Information

<TABLE>
<CAPTION>
                                                                                         1994           1995         1996
                                                                                         ----           ----         ----

<S>                                                                              <C>               <C>          <C>    
           Cash paid during the year for interest                                $     81,632        115,206      169,248
                                                                                       ======        =======      =======

           Cash paid during the year for income taxes                              $1,995,674      3,516,000    1,873,000
                                                                                    =========      =========    =========
</TABLE>


        During the second  quarter of 1996, the Company issued 102,641 shares of
           common stock to acquire certain assets of Tribe Computer Works, Inc.,
           including   inventory  of  $95,685  and  property  and  equipment  of
           $107,467.  In  addition,  the tax  effect  of the  exercise  of stock
           options  resulted  in  increases  to common  stock and an increase in
           refundable  income taxes of  $1,611,201.  These noncash  transactions
           have been excluded from the statements of cash flows.

(13)     Dependence on a Single Supplier

        The Company produces  its products  using  components  or  subassemblies
           purchased from third-party suppliers. Certain of these components are
           available only from a single or limited sources. In 1995 and 1996 the
           Company purchased  substantially all of its integrated  circuits from
           only  one  supplier.   An  interruption  in  the  delivery  of  these
           components  could have a  material  adverse  effect on the  Company's
           results of operations.

(14)     Geographic Information

        The Company's net sales for 1996 were comprised of $73,085,475 in North
           America, $18,227,729 in Europe and $8,881,827 in other locations.


<PAGE>



                                                                EXHIBIT INDEX

<TABLE>
<S>       <C>               <C>                                                  
             3.1            Articles of  Continuance,  filed as Exhibit 3.1 to the Annual  Report on Form 10-K for the
                            fiscal year ended December 31, 1991 (the "1991 Form 10-K"). *

             3.2            By-Law  No. 1 of Zoom Telephonics, Inc., filed as Exhibit 3.2 to the 1991 Form 10-K. *

             3.3            By-Law  No. 2 of Zoom Telephonics, Inc., filed as Exhibit 3.3 to the 1991 Form 10-K. *

          **10.1            1991  Stock  Option  Plan,   as  amended,   of  Zoom
                            Telephonics,  Inc.,  filed  as  Exhibit  10.1 to the
                            Annual Report on Form 10-K for the fiscal year ended
                            December 31, 1994 (the "1994 Form 10-K"). *

          **10.2            1991 Director Stock Option Plan, of Zoom  Telephonics,  Inc., filed as Exhibit 10.2 to the
                            1994 Form 10-K. *

            10.3            Commercial  Revolving Line of Credit Agreement by and between Zoom  Telephonics,  Inc. and
                            Shawmut Bank, N.A. filed as Exhibit 10.3 to the 1995 Form 10-K. *

            10.4            Commercial Revolving Line of Credit Promissory Note of Zoom Telephonics,  Inc. in favor of
                            Shawmut Bank, N.A. filed as Exhibit 10.4 to the 1995 Form 10-K. *

            10.5            Lease between Zoom  Telephonics  and "E" Street  Associates,  filed as Exhibit 10.5 to the
                            June 1996 Form 10-Q.  *

            10.6            Form of Indemnification  Agreement, filed as Exhibit 10.6 to the June 1996 Form 10-Q. *

            10.7            Revolving Credit Facility Provided by Fleet National Bank for Zoom Telephonics, Inc..

            11.             Statement re computation of per share earnings.

            21.             Subsidiaries.

            23.             Consent of KPMG Peat Marwick LLP.

            27.             Financial Data Schedule
</TABLE>





- ----------------
*          In accordance  with Rule 12b-32 under the Securities  Exchange Act of
           1934, as amended, reference is made to the documents previously filed
           with the  Securities  and Exchange  Commission,  which  documents are
           hereby incorporated by reference.

**         Compensation Plan or Arrangement.



                                 PROMISSORY NOTE

$10,000,000.00                                        Boston, Massachusetts
                                                           January 17, 1997

         FOR VALUE RECEIVED, the undersigned Zoom Telephonics,  Inc., a Delaware
corporation  (the  "Borrower")  hereby  promises  to pay to the  order  of FLEET
NATIONAL  BANK (the  "Bank")  the  principal  amount of Ten  Million  and 00/100
($10,000,000.00)  Dollars or such portion thereof as may be advanced by the Bank
pursuant  to ss.1.1  of that  certain  letter  agreement  of even date  herewith
between  the  Bank  and  the  Borrower  (the  "Letter  Agreement")  and  remains
outstanding  from time to time hereunder  ("Principal"),  with interest,  at the
rate hereinafter set forth, on the daily balance of all unpaid  Principal,  from
the date hereof until payment in full of all Principal and interest hereunder.

         Interest on all unpaid  Principal  shall be due and payable  monthly in
arrears, on the first day of each month, commencing on the first such date after
the  advance  of any  Principal  and  continuing  on the first day of each month
thereafter  and on the date of  payment of this note in full,  at a  fluctuating
rate per annum  (computed  on the basis of a year of three  hundred  sixty (360)
days for the actual number of days elapsed) which shall at all times be equal to
the Prime Rate, as in effect from time to time (but in no event in excess of the
maximum rate permitted by then  applicable  law), with a change in the aforesaid
rate of interest to become  effective on the same day on which any change in the
Prime Rate is effective;  provided,  however, that if a Eurodollar Interest Rate
(as defined in the Letter  Agreement) shall have become applicable to all or any
portion of the outstanding  Principal for any Interest Period (as defined in the
Letter  Agreement),  then  interest on such  Principal or portion  thereof shall
accrue at said applicable  Eurodollar Interest Rate for such Interest Period and
shall be payable  on the  Interest  Payment  Date(s)  (as  defined in the Letter
Agreement)  applicable to such Interest  Period.  Overdue  Principal and, to the
extent  permitted by law,  overdue interest shall bear interest at a fluctuating
rate  per  annum  which at all  times  shall be equal to the sum of (i) two (2%)
percent per annum plus (ii) the per annum rate otherwise payable under this note
with respect to the Principal  which is overdue (or as to which such interest is
overdue)  (but in no event in  excess  of the  maximum  rate  permitted  by then
applicable law), payable on demand. As used herein, "Prime Rate" means that rate
of interest per annum announced by the Bank from time to time as its prime rate,
it being  understood  that such rate is merely a reference rate, not necessarily
the lowest, which serves as the basis upon which effective rates of interest are
calculated for obligations making reference thereto. If the entire amount of any
required  Principal  and/or  interest is not paid within ten (10) days after the
same is due, the Borrower shall pay to the Bank a late fee equal to five percent
(5%) of the required  payment,  provided  that such late fee shall be reduced to
three  percent (3%) of any  required  Principal  and  interest  that is not paid
within  fifteen  (15)  days of the date it is due if this note is  secured  by a
mortgage on an owner-occupied residence of 1-4 units.

         All outstanding Principal and all interest accrued thereon shall be due
and payable in full on the first to occur of: (i) an  acceleration  under ss.5.2
of the Letter  Agreement or (ii) August 31,  1997.  The Borrower may at any time
and from time to time  prepay  all or any  portion  of any  Revolving  Loans (as
defined in the Letter  Agreement),  but,  as to LIBOR  Loans (as  defined in the
Letter  Agreement),  only at the times and in the  manner,  and  (under  certain
circumstances)  with  the  additional  payments,  provided  for  in  the  Letter
Agreement.  Any  prepayment of Principal,  in whole or in part,  will be without
premium or penalty  (but,  in the case of LIBOR  Loans,  may require  payment of
additional  amounts,  as provided for in the Letter  Agreement).  Under  certain
circumstances set forth in the Letter Agreement, prepayments of Principal may be
required.

         Payments of both  Principal and interest  shall be made, in immediately
available  funds, at the office of the Bank located at 75 State Street,  Boston,
Massachusetts  02109, or at such other address as the Bank may from time to time
designate.

         The  undersigned  Borrower  irrevocably  authorizes the Bank to make or
cause to be made,  on a  schedule  attached  to this note or on the books of the
Bank, at or following  the time of making any Revolving  Loan (as defined in the
Letter  Agreement)  and of receiving  any payment of Principal,  an  appropriate
notation  reflecting such transaction  (including date, amount and maturity) and
the then aggregate unpaid balance of Principal.  Failure of the Bank to make any
such  notation  shall  not,  however,  affect  any  obligation  of the  Borrower
hereunder or under the Letter  Agreement.  The unpaid  Principal  amount of this
note,  as  recorded  by the Bank from time to time on such  schedule  or on such
books, shall, in the absence of manifest error,  constitute presumptive evidence
of the aggregate unpaid principal amount of the Revolving Loans.

         The  Borrower  hereby (a) waives  notice of and consents to any and all
advances,  settlements,  compromises, favors and indulgences (including, without
limitation,  any extension or postponement of the time for payment), any and all
receipts,  substitutions,  additions,  exchanges and releases of collateral, and
any and all  additions,  substitutions  and releases of any person  primarily or
secondarily  liable, (b) waives  presentment,  demand,  notice,  protest and all
other demands and notices generally in connection with the delivery, acceptance,
performance,  default or  enforcement  of or under this note,  and (c) agrees to
pay, to the extent  permitted by law, all actual costs and expenses,  including,
without limitation,  reasonable attorneys' fees, incurred or paid by the Bank in
enforcing this note and any collateral or security therefor,  all whether or not
litigation is commenced.

         This note is the Revolving  Note  referred to in the Letter  Agreement.
This note is subject to  prepayment  as set forth in the Letter  Agreement.  The
maturity  of this note may be  accelerated  upon the  occurrence  of an Event of
Default, as provided in the Letter Agreement.

         Executed,  as an  instrument  under seal,  as of the day and year first
above written.

CORPORATE SEAL                                ZOOM TELEPHONICS, INC.

ATTEST:

____________________________                  By:__________________________
Secretary                                         Name:
                                                  Title:

                                              By:__________________________
                                                  Name:

                                                  Title:

<PAGE>
                                 
                             ZOOM TELEPHONICS, INC.
                                207 South Street
                                Boston, MA 02111


                                                            January 17, 1997


Fleet National Bank
75 State Street
Boston, MA  02109

Gentlemen:

         This letter  agreement  will set forth certain  understandings  between
Zoom  Telephonics,  Inc.,  a Delaware  corporation  (the  "Borrower")  and Fleet
National Bank (the "Bank") with respect to Revolving Loans (hereinafter defined)
to be made by the Bank to the  Borrower  and with  respect  to letters of credit
which may  hereafter be issued by the Bank for the account of the  Borrower.  In
consideration of the mutual promises contained herein and in the other documents
referred to below,  and for other good and valuable  consideration,  receipt and
sufficiency of which are hereby acknowledged, the Borrower and the Bank agree as
follows:

I.  AMOUNTS AND TERMS

        1.1. The Borrowing;  Revolving Note. Subject to the terms and conditions
hereinafter  set  forth,  the Bank will make  loans  ("Revolving  Loans") to the
Borrower, in such amounts as the Borrower may request, on any Business Day prior
to the  first  to  occur  of (i)  the  Expiration  Date,  or  (ii)  the  earlier
termination of the within-described revolving financing arrangements pursuant to
ss.5.2 or ss.6.6; provided,  however, that (1) the aggregate principal amount of
Revolving Loans outstanding shall at no time exceed the Maximum Revolving Amount
(hereinafter  defined)  and  (2) the  Aggregate  Bank  Liabilities  (hereinafter
defined)  shall at no time  exceed the  Borrowing  Base  (hereinafter  defined).
Without limitation of the foregoing,  no Revolving Loan will be made by the Bank
hereunder if, after giving effect to such  Revolving  Loan,  the Aggregate  Bank
Liabilities would exceed  $10,000,000.  Within the foregoing limits, and subject
to the terms and conditions  hereof,  the Borrower may obtain  Revolving  Loans,
repay Revolving Loans and obtain Revolving Loans again on one or more occasions.
The Revolving Loans shall be evidenced by that certain  $10,000,000  face amount
promissory  note  of even  date  herewith  (the  "Revolving  Note")  made by the
Borrower and payable to the order of the Bank. The Borrower  hereby  irrevocably
authorizes  the Bank to make or cause to be made, on a schedule  attached to the
Revolving  Note or on the books of the Bank,  at or following the time of making
each  Revolving  Loan and of receiving any payment of principal,  an appropriate
notation  reflecting such  transaction and the then aggregate  unpaid  principal
balance of the Revolving Loans. The amount so noted shall constitute presumptive
evidence as to the amount owed by the Borrower  with respect to principal of the
Revolving  Loans.  Failure  of the  Bank to make any such  notation  shall  not,
however,  affect  any  obligation  of the  Borrower  or any  right  of the  Bank
hereunder or under the Revolving Note.
<PAGE>

        1.2. Interest Rate. Except as provided below in this ss.1.2, interest on
the  Revolving  Loans  will be  payable  at a  fluctuating  rate per annum  (the
"Floating  Rate")  which  shall at all  times be equal to the  Prime  Rate as in
effect  from  time to time  (but in no  event  in  excess  of the  maximum  rate
permitted  by then  applicable  law),  with a change in such rate of interest to
become effective on each day when a change in the Prime Rate becomes  effective.
Subject to the  conditions  set forth  herein,  the  Borrower may elect that any
Revolving  Loan to be made  under  ss.1.1  will  be made as a LIBOR  Loan.  Such
election  shall  be  made  by the  Borrower  giving  to the  Bank a  written  or
telephonic notice received by the Bank within the time period and containing the
information  described in the next  following  sentence (a "Fixed Rate Borrowing
Notice").  The Fixed Rate Borrowing Notice must be received by the Bank no later
than 10:00 a.m.  (Boston  time) on that day which is two Business  Days prior to
the date of the proposed borrowing and must specify the amount of the LIBOR Loan
requested (which shall be $500,000 or an integral multiple thereof), whether the
Interest  Period is proposed to be one month,  two months,  three  months or six
months and the  proposed  commencement  date of the  relevant  Interest  Period.
Notwithstanding  anything  provided  elsewhere  in this  letter  agreement,  the
Borrower  may not select an  Interest  Period for any LIBOR Loan which would end
after the Expiration Date. Any Fixed Rate Borrowing  Notice shall,  upon receipt
by the Bank,  become  irrevocable and binding on the Borrower,  and the Borrower
shall,  upon  demand and receipt of a Bank  Certificate  with  respect  thereto,
forthwith  indemnify the Bank against any actual loss or expense incurred by the
Bank as a result of any failure by the Borrower to obtain (other than due to the
failure of the Bank to fund in  violation of the Bank's  obligations  under this
letter  agreement)  or maintain any  requested  LIBOR Loan,  including,  without
limitation,  any loss or  expense  incurred  by  reason  of the  liquidation  or
redeployment of deposits or other funds acquired by the Bank to fund or maintain
such  LIBOR  Loan.  Each  LIBOR  Loan  will be due and  payable  in full (if not
required to be repaid earlier pursuant to the terms of this letter agreement) on
the last day of the Interest Period applicable thereto.  The principal amount of
any such  LIBOR  Loan so repaid  may be  reborrowed  as a new LIBOR  Loan to the
extent and on the terms and  conditions  contained  in this letter  agreement by
delivery  to the Bank of a new Fixed Rate  Borrowing  Notice  conforming  to the
requirements  set forth  above in this  ss.1.2 (and any LIBOR Loan not so repaid
and not so reborrowed as a new LIBOR Loan will be deemed to have been reborrowed
as a Floating  Rate Loan).  Notwithstanding  any other  provision of this letter
agreement,  the Bank need not make any LIBOR Loan at any time when there  exists
any Event of  Default  (as  hereinafter  defined)  or any event or  circumstance
which, with the giving of notice or the passage of time or both, could become an
Event of Default.

        1.3. Repayment;  Renewal. The Borrower shall repay in full all Revolving
Loans and all interest  thereon  upon the first to occur of: (i) the  Expiration
Date, or (ii) an acceleration under ss.5.2(a)  following an Event of Default. In
addition,  if at any time the Borrowing  Base is in an amount which is less than
the then  outstanding  Aggregate Bank  Liabilities,  the Borrower will forthwith
prepay  so much of the  Revolving  Loans  as may be  required  (or  arrange  for
termination  of such letters of credit as may be required) so that the Aggregate
Bank Liabilities will not exceed the Borrowing Base. The Borrower may prepay, at
any time, without penalty or premium,  the whole or any portion of any Revolving
Loan which is a Floating  Rate Loan.  The  Borrower  may prepay the whole or any
portion of any  Revolving  Loan  which is a LIBOR  Loan;  provided  that (i) the
Borrower  gives  the Bank not less than two (2)  Business  Days'  prior  written

<PAGE>

notice of its intent so to prepay,  (ii) the  Borrower  pays all interest on the
LIBOR  Loan  (or  portion  thereof)  so  prepaid  accrued  to the  date  of such
prepayment,  (iii) any voluntary  prepayment  shall be in a principal  amount of
$1,000,000  or an integral  multiple  thereof and (iv) if the  Borrower  for any
reason  makes  any  prepayment  of a LIBOR  Loan  prior  to the  last day of the
Interest Period applicable thereto, the Borrower shall forthwith pay all amounts
owing to the Bank  pursuant to the  provisions  of ss.1.6  with  respect to such
LIBOR  Loan.  The  Bank  may,  at  its  sole  discretion,  renew  the  financing
arrangements described in this letter agreement by extending the Expiration Date
in a writing  signed  by the Bank and  accepted  by the  Borrower.  Neither  the
inclusion in this letter agreement or elsewhere of covenants relating to periods
of time after the  Expiration  Date,  nor any other  provision  hereof,  nor any
action  (except  a  written  extension  pursuant  to the  immediately  preceding
sentence),  non-action  or  course  of  dealing  on the part of the Bank will be
deemed an  extension  of, or  agreement  on the part of the Bank to extend,  the
Expiration Date.

        1.4. Interest Payments.  The Borrower will pay interest on the principal
amount of the  Revolving  Loans  outstanding  from  time to time,  from the date
hereof until payment of the Revolving  Loans and the Revolving  Note in full and
the termination of this letter  agreement.  Interest on Floating Rate Loans will
be payable  monthly in arrears on the first day of each month.  Interest on each
LIBOR Loan will be paid in arrears on the  applicable  Interest  Payment Date or
Dates.  In any event,  interest shall also be paid on the date of payment of the
Revolving Loans in full. Interest on Floating Rate Loans shall be payable at the
Floating  Rate.  The rate of  interest  payable  on any  LIBOR  Loan will be the
Eurodollar Interest Rate applicable thereto. In any event,  overdue principal of
any Revolving Loan and, to the extent  permitted by law, overdue interest on any
Revolving  Loan shall bear interest at a rate per annum which at all times shall
be  equal  to the sum of (i) two  (2%)  percent  per  annum  plus  (ii) the rate
otherwise applicable to such overdue principal (or to the principal amount as to
which such interest is overdue) under the Revolving Note, payable on demand. All
interest payable hereunder and/or under the Revolving Note will be calculated on
the basis of a 360-day year for the actual number of days elapsed.

        1.5.      Rate Determination Protection.  In the event that:

                  (i) the Bank shall determine that, by reason of  circumstances
                  affecting the London interbank  market or otherwise,  adequate
                  and  reasonable  methods  do not  exist for  ascertaining  the
                  Eurodollar  Interest Rate which would  otherwise be applicable
                  during any Interest Period, or

                  (ii)     the Bank shall determine that:

                           (A) the making or  continuation of any LIBOR Loan has
                           been  made  impracticable  or  unlawful  by  (1)  the
                           occurrence of any  contingency  that  materially  and
                           adversely  affects the London interbank market or (2)
                           compliance  by  the  Bank  in  good  faith  with  any
                           applicable law or governmental regulation,  guideline
                           or order or  interpretation  or change thereof by any
                           governmental     authority     charged    with    the
                           interpretation or administration  thereof or with any
                           request  or  directive   of  any  such   governmental
                           authority  (whether or not  having the force of law);
                           or
<PAGE>

                  (B)      LIBOR will not, in the  reasonable  determination  of
                           the Bank,  adequately  and fairly reflect the cost to
                           the Bank of funding the LIBOR Loans for such Interest
                           Period

                  then  the  Bank   shall   forthwith   give   notice   of  such
                  determination  (which shall be  conclusive  and binding on the
                  Borrower) to the Borrower.  In such event the  obligations  of
                  the Bank to make LIBOR Loans shall be suspended until the Bank
                  determines  that  the   circumstances   giving  rise  to  such
                  suspension  no longer  exist,  whereupon the Bank shall notify
                  the Borrower.

        1.6. Prepayment of LIBOR Loans. The following  provisions of this ss.1.6
shall be effective only with respect to LIBOR Loans:  If, due to acceleration of
the  Revolving  Note or due to voluntary  prepayment or due to any other reason,
the Bank receives  payment of any principal of a LIBOR Loan on any date prior to
the last day of the relevant  Interest Period,  the Borrower shall,  upon demand
and  receipt  of a Bank  Certificate  from the Bank with  respect  thereto,  pay
forthwith to the Bank all amounts  required to  compensate  the Bank for losses,
costs or expenses which it may have reasonably incurred and may reasonably incur
as a result of such payment, including,  without limitation, any loss or expense
incurred by reason of the  liquidation or  redeployment of funds acquired by the
Bank to fund or maintain such LIBOR Loan.  This provision  shall apply,  without
limitation, to any prepayment required under the second sentence of ss.1.3.

        1.7.      Increased Costs; Capital Adequacy.

                  (i) If the adoption, effectiveness or phase-in, after the date
                  hereof,  of any  applicable  law, rule or  regulation,  or any
                  change  therein,  or  any  change  in  the  interpretation  or
                  administration thereof by any governmental authority,  central
                  bank or comparable  agency charged with the  interpretation or
                  administration  thereof,  or  compliance  by the Bank with any
                  request or directive  (whether or not having the force of law)
                  of any such authority, central bank or comparable agency:

                           (A) shall subject the Bank to any Imposition or other
                           charge with respect to any LIBOR Loan,  the Revolving
                           Note or the Bank's  agreement to make LIBOR Loans, or
                           shall change the basis of taxation of payments to the
                           Bank of the  principal  of or  interest  on any LIBOR
                           Loan or any  other  amounts  due  under  this  letter
                           agreement in respect of the LIBOR Loans or the Bank's
                           agreement to make LIBOR Loans  (except for changes in
                           the rate of tax on the  over-all  net  income  of the
                           Bank); or

                           (B)  shall  impose,  modify  or deem  applicable  any
                           reserve,   special  deposit,   deposit  insurance  or
                           similar requirement  (including,  without limitation,
                           any  such   requirement   imposed  by  the  Board  of
                           Governors  of  the  Federal   Reserve   System,   but
                           excluding,  with respect to any LIBOR Loan,  any such
                           requirement   already   included  in  the  applicable

<PAGE>

                           Reserve Rate) against assets of, deposits with or for
                           the  account of, or credit  extended  by, the Bank or
                           shall  impose on the Bank or on the London  interbank
                           market any other condition affecting any LIBOR Loans,
                           the  Revolving  Note or the Bank's  agreement to make
                           LIBOR Loans

                  and the result of any of the foregoing is to increase the cost
                  to the Bank of making  or  maintaining  any  LIBOR  Loan or to
                  reduce the amount of any sum  received  or  receivable  by the
                  Bank under this letter  agreement or under the Revolving  Note
                  with respect to any LIBOR Loan by an amount deemed by the Bank
                  to be material, then, upon demand by the Bank and receipt of a
                  Bank  Certificate  from the Bank  with  respect  thereto,  the
                  Borrower  shall  pay to the Bank  such  additional  amount  or
                  amounts as the Bank  certifies to be  necessary to  compensate
                  the  Bank for  such  increased  cost or  reduction  in  amount
                  received or receivable.

                  (ii) If the Bank shall have  determined in good faith that the
                  adoption,  effectiveness  or phase-in after the date hereof of
                  any  applicable  law,  rule or  regulation  regarding  capital
                  requirements  for  banks  or bank  holding  companies,  or any
                  change therein after the date hereof,  or any change after the
                  date hereof in the interpretation or administration thereof by
                  any governmental authority,  central bank or comparable agency
                  charged with the interpretation or administration  thereof, or
                  compliance  by the Bank with any request or  directive of such
                  entity regarding  capital adequacy  (whether or not having the
                  force of law) has or would  have the  effect of  reducing  the
                  return on the Bank's  capital  with  respect to its  agreement
                  hereunder  to make  Revolving  Loans  or with  respect  to any
                  Revolving  Loan (whether or not then subject to any Eurodollar
                  Interest Rate) to a level below that which the Bank could have
                  achieved (taking into  consideration  the Bank's policies with
                  respect to capital adequacy  immediately before such adoption,
                  effectiveness,  phase-in,  change or  compliance  and assuming
                  that the Bank's capital was then fully utilized) by any amount
                  deemed by the Bank in good faith to be material:  (A) the Bank
                  shall promptly after its determination of such occurrence give
                  notice thereof to the Borrower; and (B) the Borrower shall pay
                  to the Bank as an  additional  fee from time to time on demand
                  such amount as the Bank  certifies  to be the amount that will
                  compensate it for such  reduction.  A Bank  Certificate of the
                  Bank  claiming   compensation   under  this  ss.1.7  shall  be
                  presumptively  conclusive  in the absence of  manifest  error.
                  Such certificate  shall set forth the nature of the occurrence
                  giving rise to such  compensation,  the  additional  amount or
                  amounts  to be paid to the Bank  hereunder  and the  method by
                  which such amounts are  determined.  In  determining  any such
                  amount,  the  Bank  may  use  any  reasonable   averaging  and
                  attribution methods.

                  (iii)  No   failure   on  the  part  of  the  Bank  to  demand
                  compensation on any one occasion shall  constitute a waiver of
                  its right to demand such  compensation  on any other  occasion
                  and no  failure  on the part of the Bank to  deliver  any Bank
                  Certificate  in a timely  manner  shall in any way  reduce any
                  obligation of the Borrower to the Bank under this ss.1.7.
<PAGE>

        1.8. Illegality or Impossibility. Notwithstanding any other provision of
this  letter  agreement,  if  the  introduction  of or any  change  in or in the
interpretation or administration of any law or regulation applicable to the Bank
or the Bank's good faith activities in the London interbank market shall make it
unlawful,   or  any  central  bank  or  other   governmental   authority  having
jurisdiction  over the Bank or the Bank's  good faith  activities  in the London
interbank  market  shall  assert  that  it is  unlawful,  or  otherwise  make it
impossible,  for the Bank to perform  its  obligations  hereunder  to make LIBOR
Loans or to continue to fund or maintain LIBOR Loans, then on notice thereof and
demand therefor by the Bank in good faith to the Borrower, (i) the obligation of
the Bank to fund LIBOR Loans shall  terminate and (ii) the Borrower shall prepay
in full all affected LIBOR Loans on or prior to the last day on which such LIBOR
Loans may legally remain outstanding.

        1.9. Advances and Payments.   The proceeds of all Revolving Loans shall 
be credited by the Bank to a general deposit account maintained by  the Borrower
with the Bank.  The proceeds of each Revolving Loan will be used by the Borrower
solely for working capital purposes.

         The Bank may charge any general  deposit account of the Borrower at the
Bank with the amount of all payments of interest,  principal and other sums due,
from time to time,  under this letter agreement and/or the Revolving Note and/or
with respect to any letter of credit; and will thereafter notify the Borrower of
the amount so  charged.  The  failure of the Bank so to charge any account or to
give any such  notice  shall not affect the  obligation  of the  Borrower to pay
interest, principal or other sums as provided herein or in the Revolving Note or
with respect to any letter of credit.

         Whenever  any  payment  to be made to the Bank  hereunder  or under the
Revolving Note or with respect to any letter of credit shall be stated to be due
on a day  which is not a  Business  Day,  such  payment  may be made on the next
succeeding  Business  Day, and interest  payable on each such date shall include
the amount  thereof  which shall accrue  during the period of such  extension of
time. All payments by the Borrower  hereunder and/or in respect of the Revolving
Note  and/or  with  respect  to any  letter of  credit  shall be made net of any
Impositions   or  taxes  and  without   deduction,   set-off  or   counterclaim,
notwithstanding  any claim which the Borrower  may now or at any time  hereafter
have against the Bank.  All payments of  interest,  principal  and any other sum
payable  hereunder and/or under the Revolving Note shall be made to the Bank, in
immediately available funds, at its office at 75 State Street,  Boston, MA 02109
or to such other address as the Bank may from time to time direct.  All payments
received by the Bank after 2:00 p.m.  on any day shall be deemed  received as of
the next  succeeding  Business  Day.  All monies  received  by the Bank shall be
applied  first to fees,  charges,  costs and expenses  payable to the Bank under
this  letter  agreement,  the  Revolving  Note  and/or  any  of the  other  Loan
Documents,  next to interest then accrued on account of any  Revolving  Loans or
letter of credit  reimbursement  obligations and only thereafter to principal of
the Revolving Loans and letter of credit reimbursement obligations. All interest
and fees payable  hereunder  and/or under the Revolving Note shall be calculated
on the basis of a 360-day year for the actual number of days elapsed.
<PAGE>

        1.10. Letters of Credit. At the Borrower's  request,  the Bank may, from
time to time,  in its  discretion,  issue one or more  letters of credit for the
account of the  Borrower;  provided  that at the time of such issuance and after
giving effect thereto the Aggregate Bank Liabilities will in no event exceed the
lesser of (i)  $10,000,000 or (ii) the then effective  Borrowing  Base. Any such
letter of credit will be issued for such fee and upon such terms and  conditions
as may be agreed to by the Bank and the  Borrower at the time of  issuance.  The
Borrower hereby authorizes the Bank,  without further request from the Borrower,
to cause the Borrower's  liability to the Bank for  reimbursement of funds drawn
under any such  letter of credit to be repaid  from the  proceeds of a Revolving
Loan to be made hereunder.  The Borrower hereby  irrevocably  requests that such
Revolving Loans be made.

        1.11.  Conditions  to  Advance.  Prior  to the  making  of  the  initial
Revolving Loan or the issuance of any letter of credit  hereunder,  the Borrower
shall deliver to the Bank duly  executed  copies of this letter  agreement,  the
Revolving  Note and the documents  and other items listed on the Closing  Agenda
delivered  herewith by the Bank to the  Borrower,  all of which,  as well as all
legal  matters  incident  to the  transactions  contemplated  hereby,  shall  be
satisfactory in form and substance to the Bank and its counsel in good faith.

         Without limiting the foregoing,  any Revolving Loan or letter of credit
issuance  (including the initial Revolving Loan or letter of credit issuance) is
subject  to the  further  conditions  precedent  that on the date on which  such
Revolving  Loan is made or such  letter of credit is issued  (and  after  giving
effect thereto):

         (a) All statements, representations and warranties of the Borrower made
in this letter agreement  and/or in the Security  Agreement shall continue to be
correct in all material  respects as of the date of such  Revolving  Loan or the
date of issuance of such  letter of credit,  as the case may be,  other than any
such statements,  representations and warranties which by their terms refer only
to the date of this letter agreement.

         (b) All  covenants  and  agreements  of the Borrower  contained  herein
and/or in any of the other Loan  Documents  shall have been complied with in all
material  respects on and as of the date of such  Revolving  Loan or the date of
issuance of such letter of credit, as the case may be.

         (c) No event which  constitutes,  or which with notice or lapse of time
or both  could  constitute,  an Event of  Default  shall  have  occurred  and be
continuing.

         (d) No material  adverse  change shall have  occurred in the  financial
condition of the Borrower from that disclosed in the financial  statements  then
most recently furnished to the Bank.

         Each request by the Borrower for any Revolving Loan or for the issuance
of any letter of credit,  and each acceptance by the Borrower of the proceeds of
any  Revolving  Loan or  delivery  of a  letter  of  credit,  will be  deemed  a
representation  and warranty by the Borrower that at the date of such  Revolving
Loan or the date of issuance  of such letter of credit,  as the case may be, and
after giving  effect  thereto all of the  conditions  set forth in the foregoing
clauses (a)-(d) of this ss.1.11 will be satisfied.  Each request for a Revolving

<PAGE>

Loan or  letter of credit  issuance  will be  accompanied  by a  borrowing  base
certificate on a form satisfactory to the Bank,  executed by the chief financial
officer of the Borrower,  unless such a certificate  shall have been  previously
furnished  setting forth the  Borrowing  Base as at a date not more than 30 days
prior to the date of the requested  borrowing or the requested  letter of credit
issuance, as the case may be.

II.  REPRESENTATIONS AND WARRANTIES

        2.1.Representations and Warranties. In order to induce the Bank to enter
into this letter  agreement and to make Revolving Loans  hereunder  and/or issue
letters of credit hereunder, the Borrower warrants and represents to the Bank as
follows:

         (a) The Borrower is a corporation duly organized,  validly existing and
in good  standing  under the laws of Delaware.  The Borrower has full  corporate
power to own its  property  and conduct its  business  as now  conducted  and as
proposed to be conducted and to enter into and perform this letter agreement and
the other Loan  Documents.  The Borrower is duly qualified to do business and in
good standing in Massachusetts  and is also duly qualified to do business and in
good standing in each other  jurisdiction  where the failure so to qualify could
(singly  or in the  aggregate  with all other  such  failures)  have a  material
adverse  effect  on  the  financial  condition,  business  or  prospects  of the
Borrower,  all such  jurisdictions  being  listed on item 2.1(a) of the attached
Disclosure  Schedule.  At the date hereof,  the  Borrower  has no  Subsidiaries,
except as shown on said item 2.1(a) of the  attached  Disclosure  Schedule.  The
Borrower is not a member of any partnership or joint venture.  Each of FSC, Zoom
UK  and  Tribe  is a  wholly-owned  Subsidiary  of  the  Borrower  which  has no
Indebtedness  for  borrowed  money  (except to the  Borrower)  and  conducts  no
business other than acting as a distributor of the Borrower's products.

         (b) At the  date  of  this  letter  agreement,  all of the  outstanding
capital  stock of the  Borrower  is owned,  of record and  beneficially,  by the
Parent.

         (c) The  execution,  delivery and  performance  by the Borrower of this
letter  agreement and each of the other Loan Documents have been duly authorized
by all necessary corporate and other action and do not and will not:

                 (i) violate any provision of, or require as a  prerequisite  to
         effectiveness any filing, registration,  consent or approval under, any
         law, rule,  regulation,  order,  writ,  judgment,  injunction,  decree,
         determination or award presently in effect having  applicability to the
         Borrower;

                 (ii)  violate  any  provision  of the charter or by-laws of the
         Borrower,  or result in a breach of or  constitute a default or require
         any waiver or consent under any  indenture or loan or credit  agreement
         or any  other  material  agreement,  lease or  instrument  to which the
         Borrower is a party or by which the  Borrower or any of its  properties
         may be bound or affected or require any other consent of any Person; or
<PAGE>

                 (iii) result in, or require,  the creation or imposition of any
         lien,  security interest or other  encumbrance  (other than in favor of
         the Bank),  upon or with respect to any of the  properties now owned or
         hereafter acquired by the Borrower.

         (d)  This  letter  agreement  and  each  of the  other  Loan  Documents
delivered herewith has been duly executed and delivered by the Borrower and each
is a legal,  valid and binding obligation of the Borrower,  enforceable  against
the Borrower in accordance with its respective terms.

         (e)  Except as  described  on item  2.1(e) of the  attached  Disclosure
Schedule,  there  are no  actions,  suits  or  proceedings  pending  or,  to the
knowledge  of  the  Borrower,  threatened  by or  against  the  Borrower  or any
Subsidiary  (nor,  to the  knowledge  of the  Borrower,  is there any pending or
threatened  investigation of the Borrower or any Subsidiary) before any court or
governmental department,  commission,  board, bureau, agency or instrumentality,
domestic or  foreign,  which could  hinder or prevent  the  consummation  of the
transactions  contemplated  hereby or call into  question  the  validity of this
letter agreement or any of the other Loan Documents or any action taken or to be
taken in  connection  with the  transactions  contemplated  hereby or thereby or
which in any  single  case or in the  aggregate  is  reasonably  likely  to have
resulted in or is reasonably  expected to result in any material  adverse change
in the business, prospects,  condition, affairs or operations of the Borrower or
any Subsidiary.

         (f) The  Borrower  is not in  violation  of any term of its  charter or
by-laws  as now in  effect.  Neither  the  Borrower  nor any  Subsidiary  of the
Borrower is in material  violation  of any term of any  mortgage,  indenture  or
judgment,  decree  or order,  or any  other  material  instrument,  contract  or
agreement to which it is a party or by which any of its property is bound.

         (g) The Borrower has filed (and has caused each of its  Subsidiaries to
file) all federal,  foreign, state and local tax returns,  reports and estimates
required to be filed by the  Borrower  and/or by any such  Subsidiary.  All such
filed returns, reports and estimates are proper and accurate and the Borrower or
the relevant Subsidiary has paid all taxes, assessments,  impositions,  fees and
other governmental charges required to be paid in respect of the periods covered
by such returns,  reports or estimates.  No deficiencies for any tax, assessment
or governmental charge have been asserted or assessed, and the Borrower knows of
no material tax liability or basis therefor.

         (h) The Borrower is in compliance  (and each Subsidiary of the Borrower
is in compliance)  with all  requirements of law,  federal,  foreign,  state and
local,  and all  requirements  of all  governmental  bodies or  agencies  having
jurisdiction over it, the conduct of its business, the use of its properties and
assets,  and all  premises  occupied by it,  failure to comply with any of which
could (singly or in the aggregate  with all other such failures) have a material
adverse effect upon the assets,  business,  financial  condition or prospects of
the  Borrower  or any such  Subsidiary.  Without  limiting  the  foregoing,  the
Borrower  has  all  the  material   franchises,   licenses,   leases,   permits,
certificates and  authorizations  needed for the conduct of its business and the
use of its properties and all premises  occupied by it, as now conducted,  owned
and used and as proposed to be conducted, owned and used.
<PAGE>

         (i) The audited consolidated financial statements of the Parent and the
Parent's  Subsidiaries  as at  December  31,  1995 and the  management-generated
statements of the Parent and the Parent's Subsidiaries as at September 30, 1996,
each  heretofore  delivered  to the Bank,  are  complete and accurate and fairly
present the financial  condition of the Parent and the Parent's  Subsidiaries as
at the respective dates thereof and for the periods covered thereby, except that
the  management-generated  statements  do not  have  footnotes  and  thus do not
present the  information  which would  normally be contained in the footnotes to
financial statements and subject to normal year-end adjustments, which shall not
be  material.  Neither the Parent nor any of the Parent's  Subsidiaries  has any
liability,  contingent  or otherwise,  not disclosed in the aforesaid  financial
statements  or in any notes thereto that could  materially  affect the financial
condition of the Parent and the Parent's Subsidiaries.  Since December 31, 1995,
there has been no material  adverse  development  in the business,  condition or
prospects  of the Parent and the Parent's  Subsidiaries,  and neither the Parent
nor any of the Parent's  Subsidiaries has entered into any material  transaction
other than in the ordinary course.

         (j) The principal place of business and chief executive  offices of the
Borrower are located at 207 South Street, Boston, MA 02111.

         (k) To the best  knowledge of the Borrower,  the Borrower owns or has a
valid right to use all of the material patents, copyrights, trademarks and trade
names now being used to  conduct  its  business.  To the best  knowledge  of the
Borrower,  the  conduct of the  Borrower's  business  as now  operated  does not
conflict with valid patents, copyrights,  trademarks or trade names of others in
any manner  that could  materially  adversely  affect the  business,  prospects,
assets or condition, financial or otherwise, of the Borrower.

         (l) To the  best  knowledge  of the  Borrower,  none  of the  executive
officers or key  employees of the Borrower is subject to any  agreement in favor
of anyone  other than the Borrower  which  materially  limits or restricts  that
person's right to engage in the type of business activity  conducted or proposed
to be  conducted  by the  Borrower  or which  grants  to anyone  other  than the
Borrower  any  rights in any  inventions  or other  ideas  susceptible  to legal
protection developed or conceived by any such officer or key employee.

         (m) The Borrower is not a party to any contract or agreement  which now
has or, as far as can be foreseen by the Borrower at the date hereof, may have a
material  adverse  effect on the  financial  condition,  business,  prospects or
properties of the Borrower.

III.  AFFIRMATIVE COVENANTS AND REPORTING REQUIREMENTS

         Without  limitation  of any other  covenants and  agreements  contained
herein  or  elsewhere,  the  Borrower  agrees  that  so  long  as the  financing
arrangements  contemplated  hereby are in effect or any Revolving Loan or any of
the other  Obligations  shall be  outstanding  or any  letter  of credit  issued
hereunder shall be outstanding:
<PAGE>

        3.1.  Legal  Existence;  Qualification;  Compliance.  The Borrower  will
maintain  (and will cause each  Subsidiary  of the  Borrower  to  maintain)  its
corporate  existence and good standing in the jurisdiction of its incorporation.
The  Borrower  will  remain  qualified  to do business  and in good  standing in
Massachusetts  and the  Borrower  will  qualify to do  business  and will remain
qualified and in good  standing (and the Borrower will cause each  Subsidiary of
the Borrower to qualify and remain qualified and in good standing) in each other
jurisdiction  where the failure so to qualify  could (singly or in the aggregate
with all other such  failures)  have a material  adverse effect on the financial
condition,  business or prospects of the  Borrower or any such  Subsidiary.  The
Borrower will comply (and will cause each  Subsidiary of the Borrower to comply)
with its charter documents and by-laws.  The Borrower will comply with (and will
cause each Subsidiary of the Borrower to comply with) all applicable laws, rules
and  regulations  (including,  without  limitation,  ERISA and those relating to
environmental protection) other than (i) laws, rules or regulations the validity
or applicability of which the Borrower or such Subsidiary shall be contesting in
good faith by proceedings which serve as a matter of law to stay the enforcement
thereof and (ii) those laws,  rules and  regulations  the failure to comply with
any of which  could not  (singly or in the  aggregate)  have a material  adverse
effect on the financial condition,  business or prospects of the Borrower or any
such Subsidiary.

        3.2. Maintenance of Property;  Insurance. The Borrower will maintain and
preserve  (and will  cause each  Subsidiary  of the  Borrower  to  maintain  and
preserve) all of its fixed assets used in its business in good working order and
condition,  making all necessary repairs thereto and replacements  thereof.  The
Borrower will maintain, with financially sound and reputable insurers, insurance
with respect to its property and business against such  liabilities,  casualties
and  contingencies  and of such types and in such amounts as shall be reasonably
satisfactory  to the Bank from time to time and in any event all such  insurance
as may from  time to time be  customary  for  companies  conducting  a  business
similar to that of the Borrower in similar locales.

        3.3.  Payment of Taxes and Charges.  The Borrower will pay and discharge
(and will cause each Subsidiary of the Borrower to pay and discharge) all taxes,
assessments  and  governmental  charges  or levies  imposed  upon it or upon its
income or property, including, without limitation,  taxes, assessments,  charges
or  levies  relating  to  real  and  personal  property,   franchises,   income,
unemployment, old age benefits,  withholding, or sales or use, prior to the date
on which penalties would attach thereto,  and all lawful claims (whether for any
of the foregoing or otherwise) which, if unpaid,  might give rise to a lien upon
any property of the Borrower or any such Subsidiary, except any of the foregoing
which is being  contested  in good faith and by  appropriate  proceedings  which
serve as a matter  of law to stay the  enforcement  thereof  and for  which  the
Borrower has established and is maintaining adequate reserves. The Borrower will
pay, and will cause each of its  Subsidiaries  to pay, in a timely  manner,  all
material  lease  obligations,  material  trade  debt,  material  purchase  money
obligations and material equipment lease obligations.  The Borrower will perform
and fulfill all material  covenants and agreements  under any material leases of
real  estate,  material  agreements  relating to purchase  money debt,  material
equipment  leases and other  material  contracts.  The Borrower will maintain in
full force and effect, and comply with the terms and conditions of, all material
permits, permissions and licenses necessary or desirable for its business.
<PAGE>

        3.4.  Accounts.  The Borrower will maintain its principal depository and
operating accounts with the Bank.

        3.5.  Conduct of Business.  The Borrower will  conduct,  in the ordinary
course,  the business in which it is presently  engaged.  The Borrower will not,
without  the  prior  written  consent  of  the  Bank  (such  consent  not  to be
unreasonably   withheld),   directly  or  indirectly   (itself  or  through  any
Subsidiary)  enter into any other  unrelated  lines of business,  businesses  or
ventures.

        3.6. Reporting Requirements.   The Borrower will furnish to the Bank (or
cause to be furnished to the Bank):

                  (i)  Within 90 days after the end of each  fiscal  year of the
         Parent, a copy of the consolidated  annual audit report for such fiscal
         year for the Parent and the Parent's  Subsidiaries,  including  therein
         consolidated  and  consolidating  balance  sheets of the Parent and the
         Parent's  Subsidiaries  as at the end of such  fiscal  year and related
         consolidated  and  consolidating  statements  of income,  stockholders'
         equity and cash flow for the fiscal year then ended. Said consolidating
         statements will include  schedules showing the financial results of the
         Borrower  separately,  certified  as accurate by the  Borrower's  chief
         financial officer.  The annual consolidated  financial statements shall
         be certified by independent public  accountants  selected by the Parent
         and reasonably acceptable to the Bank, such certification to be in such
         form as is generally  recognized  as  "unqualified".  The Borrower will
         also  deliver to the Bank,  within 90 days after the end of each fiscal
         year, projections of sales, income and expenses of the Borrower for the
         succeeding  fiscal year,  prepared by the Borrower's  management,  such
         projections to be in such detail as is reasonably  satisfactory  to the
         Bank.

                  (ii)  Within 45 days after the end of each  fiscal  quarter of
         the  Borrower,  a copy  of the  Parent  and the  Parent's  Subsidiaries
         consolidated   Quarterly  Report  on  Form  10-Q,  as  filed  with  the
         Securities and Exchange  Commission  ("SEC").  If, for any reason,  the
         Parent is not required to file such Quarterly  Report on Form 10-Q with
         the SEC within 45 days after the end of any fiscal quarter, then within
         such 45-day  period  after the end of such fiscal  quarter the Borrower
         will deliver (or cause to be  delivered) to the Bank  consolidated  and
         consolidating   balance   sheets  of  the  Parent   and  the   Parent's
         Subsidiaries and related  consolidated and consolidating  statements of
         income and cash flow,  unaudited but complete and accurate (except with
         regard to year-end FSC-related  adjustments) and prepared in accordance
         with generally  accepted  accounting  principles  consistently  applied
         fairly  presenting  the  financial  condition  of the  Parent  and  the
         Parent's  Subsidiaries  as at the  dates  thereof  and for the  periods
         covered thereby (except that such quarterly statements need not contain
         footnotes)  and  certified as accurate  (except with regard to year-end
         FSC-related  adjustments) by the chief financial officer of the Parent,
         such balance sheets to be as at the end of such fiscal quarter and such
         statements  of income and cash flow to be for such  fiscal  quarter and
         for the year to date. The above-described  Form 10-Q or other quarterly
         financial  statements  will  include  or be  accompanied  by  schedules
         showing the financial results of the Borrower separately,  certified as
         accurate by the Borrower's chief financial  officer.  In any event, the

<PAGE>

         Borrower will also deliver to the Bank on a quarterly basis,  within 45
         days after the end of each fiscal quarter, an accounts receivable aging
         report in such form and in such detail as is reasonably satisfactory to
         the Bank, which report shall include, without limitation,  detail as to
         foreign  Receivables  and a  summary  list  of the  Borrower's  top ten
         customers.

                  (iii) At the time of  delivery  of each  annual  or  quarterly
         report  or   financial   statement  of  the  Parent  and  the  Parent's
         Subsidiaries  or of the Borrower,  a certificate  executed by the chief
         financial  officer of the Borrower  stating that he or she has reviewed
         this letter agreement and the other Loan Documents and has no knowledge
         of any default by the Borrower in the  performance or observance of any
         of the provisions of this letter  agreement or of any of the other Loan
         Documents  or, if he or she has such  knowledge,  specifying  each such
         default and the nature  thereof.  Each financial  statement given as at
         the end of any fiscal  quarter of the Borrower  will also set forth the
         calculations necessary to evidence compliance with ss.ss.3.7-3.10.

                  (iv) Monthly,  within 20 days after the end of each month, (A)
         an  aging  report  in  form  satisfactory  to  the  Bank  covering  all
         Receivables  of the Borrower  outstanding  as at the end of such month,
         and (B) a certificate  of the chief  financial  officer of the Borrower
         setting  forth the Borrowing  Base as at the end of such month,  all in
         form reasonably satisfactory to the Bank.

                  (v) Promptly  after  receipt,  a copy of all audits or reports
         submitted  to the Parent  and/or any of the  Parent's  Subsidiaries  by
         independent public  accountants in connection with any annual,  special
         or interim audits of the books of the Parent and/or any of the Parent's
         Subsidiaries and any letter of comments directed by such accountants to
         the management of the Parent and/or any of the Parent's Subsidiaries.

                  (vi) As soon as  possible  and in any event  within  five days
         after the  occurrence of any Event of Default or any event which,  with
         the giving of notice or passage of time or both,  would  constitute  an
         Event of Default,  the statement of the Borrower  setting forth details
         of each  such  Event of  Default  or event  and the  action  which  the
         Borrower proposes to take with respect thereto, provided, however, that
         the  Borrower  need not furnish  such  statements  with  respect to the
         covenants  contained in any of Sections 3.7, 3.8, 3.9 and/or 3.10 as to
         any  fiscal  period  until  the  earlier  of  (i)  the  closing  of the
         Borrower's  fiscal books for the relevant fiscal period or (ii) 20 days
         after the end of the relevant fiscal period.

                  (vii) Promptly after the commencement  thereof,  notice of all
         actions,  suits  and  proceedings  before  any  court  or  governmental
         department,  commission,  board,  bureau,  agency  or  instrumentality,
         domestic or foreign,  to which the  Borrower or any  Subsidiary  of the
         Borrower is a party.

                  (viii)  As  long  as the  Parent  and/or  any of the  Parent's
         Subsidiaries has a class of securities which is publicly traded, a copy

<PAGE>

         of each  periodic  or current  report of the  Parent  and/or any of the
         Parent's  Subsidiaries  filed with the SEC or any successor  agency and
         each annual report, proxy statement and other communication sent by the
         Parent and/or any of the Parent's Subsidiaries to shareholders or other
         securityholders  generally,  such  copy  to be  provided  to  the  Bank
         promptly  upon  such  filing  with the SEC or such  communication  with
         shareholders or securityholders, as the case may be.

                  (ix)  Promptly  after  the  Borrower  has  knowledge  thereof,
         written notice of any development or circumstance  which may reasonably
         be expected to have a material  adverse  effect on the  Borrower or its
         business,  properties,  assets, Subsidiaries or condition, financial or
         otherwise.

                  (x) Promptly upon request,  such other information  respecting
         the financial condition, operations,  Receivables, inventory, machinery
         or  equipment of the  Borrower or any  Subsidiary  as the Bank may from
         time to time reasonably request.

        3.7.  Debt to Worth.  The Borrower  will  maintain as at the end of each
fiscal  quarter  (commencing  with its results as at  September  30,  1996) on a
consolidated  basis a Leverage  Ratio of not more than 1.0 to 1. As used herein,
"Leverage Ratio" means, as at any date when same is to be determined,  the ratio
of  (x)  the  total  consolidated   Senior  Debt  of  the  Borrower  and/or  its
Subsidiaries then outstanding to (y) the then  consolidated  Capital Base of the
Borrower and its Subsidiaries.

        3.8.  Capital  Base.  The Borrower  will  maintain as at the end of each
fiscal  quarter  (commencing  with  its  results  as at  September  30,  1996) a
consolidated  Capital  Base of not less  than the  then-effective  Capital  Base
Requirement.  As used herein,  the "Capital Base  Requirement" will be deemed to
have been  $40,000,000  for June 30, 1996; and as at the last day of each fiscal
quarter thereafter  (commencing with September 30, 1996) (each, a "Determination
Date"), the Capital Base Requirement will be deemed to become an amount equal to
the sum of: (i) that  Capital Base  Requirement  which was in effect at the last
day  of  the  immediately  preceding  fiscal  quarter,  plus  (ii)  50%  of  the
consolidated  Net  Income of the  Borrower  and  Subsidiaries  during the fiscal
quarter ending at such  Determination Date (but without giving effect to any Net
Income which is less than zero for any fiscal quarter).

         3.9.  Profitability.   The  Borrower  will  not  incur  a  consolidated
quarterly Net Loss of $2,500,000 or more in any fiscal quarter  (commencing with
its results for the fiscal quarter ended  September 30, 1996).  Further,  if the
Borrower  incurs  any  consolidated  quarterly  Net Loss in any  fiscal  quarter
(commencing  with its results for the fiscal quarter ending September 30, 1996),
then the Borrower will achieve a  consolidated  quarterly Net Income of at least
$1.00 for the immediately following fiscal quarter.

         3.10. Liquidity. The Borrower will maintain as at the end of eachfiscal
quarter  of  Borrower (commencing with  its results as at  September 30, 1996) a
ratio of Net Quick Assets to  Current Liabilities, which ratio shall be not less
than 1.5 to 1.
<PAGE>

         3.11. Books and Records. The Borrower will maintain (and will cause the
Parent and the Parent's Subsidiaries and each of the Borrower's  Subsidiaries to
maintain)  complete and accurate  books,  records and accounts which will at all
times  accurately and fairly reflect all of its  transactions in accordance with
generally accepted  accounting  principles  consistently  applied.  The Borrower
will, at any reasonable  time and from time to time upon  reasonable  notice and
during  normal  business  hours (and at any time and without any  necessity  for
notice  following the  occurrence of an Event of Default),  permit the Bank, and
any agents or  representatives  thereof,  to examine and make copies of and take
abstracts  from the records and books of account of, and visit the properties of
the Borrower and any of its Subsidiaries,  and to discuss its affairs,  finances
and accounts with its officers, directors and/or independent accountants, all of
whom are hereby  authorized  and directed to cooperate with the Bank in carrying
out the  intent  of this  ss.3.11.  Each  financial  statement  of the  Borrower
hereafter  delivered  pursuant to this  letter  agreement  will be complete  and
accurate and will fairly  present the financial  condition of the Borrower as at
the date  thereof and for the periods  covered  thereby,  subject (as to interim
financial statements) to normal year-end audit adjustments.

IV.  NEGATIVE COVENANTS

         Without  limitation  of any other  covenants and  agreements  contained
herein  or  elsewhere,  the  Borrower  agrees  that  so  long  as the  financing
arrangements  contemplated  hereby are in effect or any Revolving Loan or any of
the other  Obligations  shall be  outstanding  or any  letter  of credit  issued
hereunder shall be outstanding:

         4.1. Indebtedness.    The  Borrower will not  create,  incur, assume or
suffer to exist any Indebtedness (nor allow  any of its  Subsidiaries to create,
incur, assume or suffer to exist any Indebtedness), except for:

              (i)  Indebtedness  owed to the Bank (or its  assigns),  including,
         without limitation,  the Indebtedness represented by the Revolving Note
         and any  Indebtedness  in respect  of  letters of credit  issued by the
         Bank;

              (ii) Subject always to the  satisfaction  of the  requirements  of
         clause (vi) of ss.4.6 below,  (A)  Indebtedness  of Subsidiaries of the
         Borrower owed to the Borrower, (B) Indebtedness of the Borrower owed to
         any Subsidiary of the Borrower and (C)  Indebtedness  of any Subsidiary
         of the Borrower owed to any other Subsidiary of the Borrower;

              (iii)    Indebtedness of the Borrower or any Subsidiary for taxes,
         assessments and governmental charges or levies not yet due and payable;

              (iv)  Indebtedness  under  or  in  respect  of  currency  exchange
         contracts  or  interest  rate  protection  obligations  incurred in the
         ordinary  course  of  business;  provided  that  the  aggregate  of the
         notional  amounts of all such contracts and obligations will not exceed
         $1,000,000;
<PAGE>

              (v) Indebtedness in connection with  performance  bonds or letters
         of credit  obtained  and  issued in the  ordinary  course of  business;
         including letters of credit related to insurance associated with claims
         for work-related injuries;

              (vi) Subordinated Debt;  provided  that the Bank  has consented to
         the economic  terms, amount and  subordination  provisions  of all such
         Subordinated Debt;

              (vii)  unsecured  current  liabilities  of  the  Borrower  or  any
         Subsidiary  (other  than  for  money  borrowed  or for  purchase  money
         Indebtedness  with respect to fixed  assets)  incurred  upon  customary
         terms in the ordinary course of business;

              (viii) purchase money Indebtedness (including, without limitation,
         Indebtedness  in  respect  of  capitalized  equipment  leases)  owed to
         equipment  vendors and/or lessors for equipment  purchased or leased by
         the  Borrower for use in the  Borrower's  business,  provided  that the
         total  of   Indebtedness   permitted  under  this  clause  (viii)  plus
         presently-existing  equipment  financing permitted under clause (ix) of
         this ss.4.1 will not exceed $2,000,000 in the aggregate  outstanding at
         any one time;

              (ix)  other   Indebtedness   (not  described  in  any  of  clauses
         (i)-(viii)  above) existing at the date hereof,  but only to the extent
         set forth on item 4.1 of the attached Disclosure Schedule; and

              (x)   any  guaranties  or other contingent  liabilities  expressly
         permitted pursuant to ss.4.3.

        4.2.  Liens.  The Borrower will not create,  incur,  assume or suffer to
exist (nor allow any of its Subsidiaries to create,  incur,  assume or suffer to
exist) any mortgage,  deed of trust, pledge,  lien, security interest,  or other
charge  or  encumbrance  (including  the lien or  retained  security  title of a
conditional vendor) of any nature (collectively,  "Liens"), upon or with respect
to any of its property or assets, now owned or hereafter  acquired,  except that
the foregoing restrictions shall not apply to:

              (i) Liens for taxes, assessments or governmental charges or levies
         on property  of the  Borrower  or any of its  Subsidiaries  if the same
         shall not at the time be delinquent  or thereafter  can be paid without
         interest  or  penalty  or are  being  contested  in good  faith  and by
         appropriate  proceedings  which  serve as a  matter  of law to stay any
         enforcement thereof and as to which adequate reserves are maintained;

              (ii) Liens imposed by law, such as carriers',  warehousemen's  and
         mechanics' liens and other similar Liens arising in the ordinary course
         of business  for sums not yet due or which are being  contested in good
         faith and by appropriate  proceedings which serve as a matter of law to
         stay the  enforcement  thereof and as to which  adequate  reserves  are
         maintained;
<PAGE>

              (iii)      pledges or  deposits under workmen's compensation laws,
         unemployment insurance, social security, retirement benefits or similar
         legislation;

              (iv)       Liens in favor of the Bank;

              (v) Liens in favor of equipment  vendors and/or  lessors  securing
         purchase money Indebtedness to the extent permitted by clause (viii) of
         ss.4.1;  provided  that no such Lien will extend to any property of the
         Borrower other than the specific items of equipment financed; or

              (vi) other  Liens  existing  at the date  hereof,  but only to the
         extent and with the  relative  priorities  set forth on item 4.2 of the
         attached Disclosure Schedule.

         Without limitation of the foregoing,  the Borrower covenants and agrees
that it will not enter into (and  represents  and warrants  that it is not now a
party to or subject to) any  agreement  or  understanding  with any Person other
than the Bank which  could  prohibit  or restrict in any manner the right of the
Borrower to grant Liens on its assets to the Bank.

        4.3.  Guaranties.  The  Borrower  will not,  without  the prior  written
consent of the Bank, assume, guarantee,  endorse or otherwise become directly or
contingently liable (including,  without limitation, liable by way of agreement,
contingent or otherwise,  to purchase,  to provide funds for payment,  to supply
funds to or  otherwise  invest in any debtor or otherwise to assure any creditor
against  loss)  (and  will not  permit  any of its  Subsidiaries  so to  assume,
guaranty  or become  directly or  contingently  liable) in  connection  with any
indebtedness  of any other  Person,  except (i)  guaranties by  endorsement  for
deposit or collection in the ordinary course of business, (ii) guaranties in the
ordinary course  connected with the sale of the products or services,  and (iii)
guaranties existing at the date hereof and described on item 4.3 of the attached
Disclosure Schedule.

        4.4. Dividends. The Borrower will not, without the prior written consent
of the Bank,  make any  distributions  to its  shareholders,  pay any  dividends
(other  than  dividends  payable  solely in capital  stock of the  Borrower)  or
redeem, purchase or otherwise acquire, directly or indirectly any of its capital
stock.

        4.5. Loans and Advances. The Borrower will not make (and will not permit
any Subsidiary to make) any loans or advances to any Person, including,  without
limitation, the Borrower's directors, officers and employees, except advances to
such directors,  officers or employees with respect to expenses incurred by them
in the ordinary course of their duties and advances against salary, all of which
loans and advances will not exceed,  in the aggregate,  $500,000  outstanding at
any one time.

        4.6.  Investments.  The  Borrower  will not,  without  the Bank's  prior
written consent (which consent shall not be unreasonably  withheld),  invest in,
hold or purchase  any stock or  securities  of any Person (nor will the Borrower
permit any of its  Subsidiaries to invest in, purchase or hold any such stock or
securities) except: (i) readily marketable direct obligations of, or obligations

<PAGE>

guarantied  by, the United States of America or any agency  thereof;  (ii) other
investment  grade debt  securities;  (iii) mutual funds, the assets of which are
primarily  invested in items of the kind described in the foregoing  clauses (i)
and (ii) of this ss.4.6; (iv) deposits with or certificates of deposit issued by
the  Bank  and any  other  obligations  of the Bank or the  Bank's  parent;  (v)
deposits in any other bank  organized  in the United  States  having  capital in
excess of $100,000,000; and (vi) investments in any Subsidiaries now existing or
hereafter created by the Borrower pursuant to ss.4.7 below; provided that in any
event the Tangible Net Worth of the Borrower alone  (exclusive of its investment
in Subsidiaries and any debt owed by any Subsidiary to the Borrower) will not be
less  than  90% of the  consolidated  Tangible  Net  Worth of the  Borrower  and
Subsidiaries.

        4.7.     Subsidiaries; Acquisitions.  The Borrower will not, without the
prior written consent of  the Bank,  form or  acquire any Subsidiary or make any
other acquisition  of the stock  of any other  Person or of all or substantially
all of the assets of any other  Person.  The Borrower will  not become a partner
in any partnership.

        4.8. Merger. The Borrower will not, without the prior written consent of
the Bank,  merge or consolidate  with any Person,  or sell,  lease,  transfer or
otherwise  dispose of any material portion of its assets (whether in one or more
transactions), other than sale of inventory in the ordinary course.

        4.9.  Affiliate  Transactions.  The  Borrower  will not,  without  prior
written  consent of the Bank,  enter into any  transaction,  including,  without
limitation,  the purchase,  sale or exchange of any property or the rendering of
any service,  with any affiliate of the Borrower,  except in the ordinary course
of and pursuant to the reasonable  requirements  of the Borrower's  business and
upon fair and  reasonable  terms no less favorable to the Borrower than would be
obtained  in a  comparable  arms'-length  transaction  with  any  Person  not an
affiliate;  provided that nothing in this ss.4.9 shall be deemed to restrict the
payment of salary or other  similar  payments  to any officer or director of the
Borrower, nor to restrict the hiring of additional officers. For the purposes of
this  letter  agreement,   "affiliate"  means  any  Person  which,  directly  or
indirectly,  controls or is  controlled  by or is under common  control with the
Borrower; any officer or director or former officer or director of the Borrower;
any Person owning of record or beneficially,  directly or indirectly, 5% or more
of any  class of  capital  stock of the  Borrower  or 5% or more of any class of
capital  stock or other equity  interest  having  voting  power (under  ordinary
circumstances)  of any of the other Persons  described  above; and any member of
the  immediate  family  of any of the  foregoing.  "Control"  means  possession,
directly or  indirectly,  of the power to direct or cause the  direction  of the
management  or policies  of any  Person,  whether  through  ownership  of voting
equity, by contract or otherwise.

         4.10.  Change  of  Address,  etc.  The  Borrower  will not  change  its
corporate  name,  nor will the Borrower  change its chief  executive  offices or
principal  place of business  from the address  described  in  ss.2.1(j)  above,
unless the Borrower gives prompt written notice to the Bank of each such change.
The Borrower  will not change its fiscal year or methods of financial  reporting
unless,  in each  instance,  prior written notice of such change is given to the
Bank and prior to such change the Borrower enters into amendments to this letter

<PAGE>

agreement in form and substance reasonably  satisfactory to the Bank in order to
preserve  unimpaired the rights of the Bank and the  obligations of the Borrower
hereunder.

         4.11.  Hazardous Waste. Except as provided below, the Borrower will not
dispose  of or suffer or permit to exist any  hazardous  material  or oil on any
site or vessel owned,  occupied or operated by the Borrower or any Subsidiary of
the Borrower,  nor shall the Borrower  store (or permit any Subsidiary to store)
on any site or vessel  owned,  occupied or operated by the  Borrower or any such
Subsidiary,  or transport or arrange the transport of, any hazardous material or
oil (the terms "hazardous material",  "oil", "site" and "vessel",  respectively,
being used herein with the meanings  given those terms in Mass.  Gen.  Laws, Ch.
21E or any  comparable  terms in any  comparable  statute in effect in any other
relevant jurisdiction).  The Borrower shall provide the Bank with written notice
of (i) the intended storage or transport of any hazardous material or oil by the
Borrower or any  Subsidiary  of the  Borrower,  (ii) any known  release or known
threat of release of any hazardous material or oil at or from any site or vessel
owned,  occupied or operated by the Borrower or any  Subsidiary of the Borrower,
and  (iii)  any  incurrence  of  any  expense  or  loss  by  any  government  or
governmental authority in connection with the assessment, containment or removal
of any  hazardous  material or oil for which expense or loss the Borrower or any
Subsidiary of the Borrower may be liable.  Notwithstanding  the  foregoing,  the
Borrower and its Subsidiaries may use, store and transport,  and need not notify
the  Bank of the  use,  storage  or  transportation  of,  (x) oil in  reasonable
quantities,  as fuel for heating of their respective  facilities or for vehicles
or machinery used in the ordinary course of their respective  businesses and (y)
hazardous  materials that are solvents,  cleaning agents or other materials used
in the ordinary course of the respective business operations of the Borrower and
its Subsidiaries,  in reasonable quantities, as long as in any case the Borrower
or the  Subsidiary  concerned (as the case may be) has obtained and maintains in
effect any necessary governmental permits, licenses and approvals, complies with
all  requirements  of applicable  federal,  state and local law relating to such
use,  storage or  transportation,  follows the protective and safety  procedures
that a prudent  businessperson  conducting  a business the same as or similar to
that of the Borrower or such  Subsidiary (as the case may be) would follow,  and
disposes of such  materials  (not consumed in the ordinary  course) only through
licensed providers of hazardous waste removal services.

         4.12.     No Margin Stock.   No proceeds of any Revolving Loan shall be
used directly or indirectly to purchase or carry any margin security.

         4.13.  Subordinated  Debt. The Borrower will not directly or indirectly
make any optional or voluntary  prepayment or purchase of  Subordinated  Debt or
modify,  alter or add any  provisions  with  respect to payment of  Subordinated
Debt.  In any event,  the Borrower will not make any payment of any principal of
or interest on any Subordinated  Debt at any time when there exists, or if there
would result therefrom, any Event of Default hereunder.

V.  DEFAULT AND REMEDIES

        5.1.       Events of Default. The occurrence of any one of the following
events shall constitute an Event of Default hereunder:
<PAGE>

         (a) The  Borrower  shall fail to make any  payment of  principal  of or
interest on the  Revolving  Note on or before the date when due; or the Borrower
shall fail to pay when due any amount  owed to the Bank in respect of any letter
of credit now or hereafter issued by the Bank; or

         (b) Any  representation  or warranty of the Borrower  contained  herein
shall at any time prove to have been incorrect in any material respect when made
or any  representation  or warranty made by the Borrower in connection  with any
Revolving  Loan or  letter  of  credit  shall  at any time  prove  to have  been
incorrect in any material respect when made; or

         (c)      The Borrower shall default in the performance or observance of
any agreement  or  obligation  under  any of ss.ss.3.6, 3.7, 3.8, 3.9 or 3.10 or
Article IV; or

         (d) The Borrower shall default in the  performance or observance of any
agreement or  obligation  under either  ss.3.1 or ss.3.3 and such default  shall
continue  unremedied  for 30 days  after the  Borrower  knows of, or  reasonably
should have known of, the facts or circumstances constituting such default; or

         (e) The Borrower  shall default in the  performance  of any other term,
covenant or agreement  contained in this letter agreement and such default shall
continue  unremedied  for 30 days after notice  thereof shall have been given to
the Borrower; or

         (f) Any default on the part of the  Borrower or any  Subsidiary  of the
Borrower shall exist, and shall remain unwaived or uncured beyond the expiration
of any  applicable  notice  and/or  grace  period,  under  any  other  contract,
agreement or undertaking now existing or hereafter  entered into with or for the
benefit of the Bank (or any affiliate of the Bank); or

         (g) Any default shall exist and remain unwaived or uncured with respect
to any  Subordinated  Debt of the  Borrower  or with  respect to any  instrument
evidencing, guaranteeing or otherwise relating to any such Subordinated Debt, or
any such  Subordinated  Debt  shall not have been  paid  when  due,  whether  by
acceleration  or  otherwise,  or shall have been  declared to be due and payable
prior to its stated  maturity,  or any event or  circumstance  shall occur which
permits, or with the lapse of time or the giving of notice or both would permit,
the  acceleration  of the  maturity  of any  Subordinated  Debt by the holder or
holders thereof; or

         (h) Any default shall exist and remain unwaived or uncured with respect
to any other  Indebtedness  for borrowed money of the Borrower or any Subsidiary
of the  Borrower  in excess of $500,000 in  aggregate  principal  amount or with
respect  to any  instrument  evidencing,  guaranteeing,  securing  or  otherwise
relating to any such  Indebtedness for borrowed money, or any such  Indebtedness
in excess of $500,000 in  aggregate  principal  amount  shall not have been paid
when due,  whether by acceleration or otherwise,  or shall have been declared to
be due and payable prior to its stated  maturity,  or any event or  circumstance
shall occur which permits,  or with the lapse of time or the giving of notice or
both would permit,  the acceleration of the maturity of any such Indebtedness by
the holder of holders thereof; or
<PAGE>

         (i) The Borrower shall be dissolved,  or the Borrower or any Subsidiary
of the  Borrower  shall  become  insolvent or bankrupt or shall cease paying its
debts as they mature or shall make an  assignment  for the benefit of creditors,
or a trustee,  receiver or liquidator shall be appointed for the Borrower or any
Subsidiary  of the  Borrower or for a  substantial  part of the  property of the
Borrower or any such  Subsidiary,  or bankruptcy,  reorganization,  arrangement,
insolvency or similar proceedings shall be instituted by or against the Borrower
or any  such  Subsidiary  under  the  laws of any  jurisdiction  (except  for an
involuntary  proceeding  filed  against the  Borrower or any  Subsidiary  of the
Borrower which is dismissed  within 60 days following the institution  thereof);
or

         (j) Any  attachment,  execution or similar  process  shall be issued or
levied  against  any  material  item  of the  property  of the  Borrower  or any
Subsidiary and such attachment,  execution or similar process shall not be paid,
stayed,  released,  vacated  or fully  bonded  within 10 days after its issue or
levy; or

         (k) Any final uninsured judgment in excess of $500,000 shall be entered
against the Borrower or any Subsidiary of the Borrower by any court of competent
jurisdiction  and shall  remain  unpaid and unstayed for more than 30 days after
the date of such entry; or

         (l) The Borrower or any  Subsidiary of the Borrower  shall fail to meet
its  minimum  funding  requirements  under  ERISA with  respect to any  employee
benefit plan (or other class of benefit which the PBGC has elected to insure) or
any such plan shall be the subject of termination proceedings (whether voluntary
or  involuntary)  and there shall  result from such  termination  proceedings  a
liability of the Borrower or any  Subsidiary  of the Borrower to the PBGC which,
in each case, in the reasonable  opinion of the Bank may have a material adverse
effect upon the financial condition of the Borrower or any such Subsidiary; or

         (m) At any time, the Borrower shall not be a wholly-owned subsidiary of
the Parent; or

         (n)  There  shall  occur  any  other  material  adverse  change  in the
condition (financial or otherwise),  operations, properties, assets, liabilities
or earnings of the Borrower.

        5.2.  Rights and Remedies on Default.   Upon the occurrence of any Event
of Default, in addition to any other rights  and remedies  available to the Bank
hereunder or otherwise,  the Bank may exercise any one or more of the  following
rights and remedies (all of which shall be cumulative):

         (a) Declare the entire unpaid  principal  amount of the Revolving  Note
then outstanding,  all interest accrued and unpaid thereon and all other amounts
payable under this letter agreement,  and all other Indebtedness of the Borrower
to the Bank,  to be forthwith  due and payable,  whereupon the same shall become
forthwith due and payable, without presentment, demand, protest or notice of any
kind, all of which are hereby expressly waived by the Borrower.
<PAGE>

         (b) Terminate the revolving financing arrangements provided for by this
letter agreement.

         (c)  Exercise all rights and remedies  hereunder,  under the  Revolving
Note and under each and any other  agreement  with the Bank;  and  exercise  all
other rights and remedies which the Bank may have under applicable law.

        5.3.  Set-off.  In addition to any rights now or hereafter granted under
applicable  law  and not by way of  limitation  of any  such  rights,  upon  the
occurrence of any Event of Default, the Bank is hereby authorized at any time or
from time to time, without presentment,  demand,  protest or other notice of any
kind to the Borrower or to any other Person,  all of which are hereby  expressly
waived,  to set off and to  appropriate  and apply any and all  deposits and any
other  Indebtedness  at any time  held or  owing  by the  Bank or any  affiliate
thereof  to or for the  credit or the  account of the  Borrower  against  and on
account of the  obligations  and  liabilities  of the Borrower to the Bank under
this letter  agreement  or  otherwise,  irrespective  of whether or not the Bank
shall have made any demand hereunder and although said obligations,  liabilities
or claims,  or any of them,  may then be  contingent  or  unmatured  and without
regard for the availability or adequacy of other collateral. As security for the
Obligations, the Borrower grants to the Bank a security interest with respect to
all its deposits and all  securities or other  property in the possession of the
Bank or any affiliate of the Bank from time to time, and, upon the occurrence of
any Event of Default, the Bank may exercise all rights and remedies of a secured
party under the Uniform Commercial Code.

        5.4. Letters of Credit.  Without limitation of any other right or remedy
of the Bank,  (i) if an Event of Default  shall have occurred and the Bank shall
have accelerated the Revolving Loans or (ii) if this letter agreement and/or the
revolving  financing  arrangements  described herein shall have expired or shall
have been earlier  terminated by either the Bank or the Borrower for any reason,
the  Borrower  will  forthwith  deposit with the Bank in cash a sum equal to the
total of all then undrawn amounts of all outstanding letters of credit issued by
the Bank for the account of the Borrower.

VI.  MISCELLANEOUS

        6.1.  Costs and  Expenses.  The  Borrower  agrees to pay,  on demand and
delivery of a Bank  Certificate  therefor,  all costs and  expenses  (including,
without  limitation,  reasonable  legal fees) of the Bank in connection with the
preparation, execution and delivery of this letter agreement, the Revolving Note
and all other  instruments  and documents to be delivered in connection with any
Revolving  Loan or any letter of credit issued  hereunder and any  amendments or
modifications  of any of the  foregoing,  as  well  as the  costs  and  expenses
(including,  without  limitation,  the  reasonable  fees and  expenses  of legal
counsel)  incurred  by the Bank in  connection  with  preserving,  enforcing  or
exercising,  upon default,  any rights or remedies under this letter  agreement,
the Revolving Note and all other  instruments  and documents  delivered or to be
delivered hereunder or in connection  herewith,  all whether or not legal action
is instituted.  In addition,  the Borrower shall be obligated to pay any and all
stamp and other taxes payable or determined to be payable in connection with the

<PAGE>

execution  and delivery of this letter  agreement,  the  Revolving  Note and all
other  instruments  and  documents  to  be  delivered  in  connection  with  any
Obligation.  Any fees,  expenses or other  charges which the Bank is entitled to
receive from the Borrower  under this Section  shall bear interest from the date
of any demand  therefor until the date when paid at a rate per annum equal to 2%
per annum the highest per annum rate otherwise  payable under the Revolving Note
(but in no event in excess of the  maximum  rate  permitted  by then  applicable
law).

        6.2.  Facility  Fees. The Borrower will pay to the Bank, on the last day
of each calendar quarter  (commencing with March 31, 1997) and on the Expiration
Date, a facility fee equal to 0.20% per annum  (appropriately  pro-rated for any
partial calendar  quarter) based on the average daily Unused Portion during such
calendar  quarter.  As used herein,  the "Unused  Portion" on any day means that
amount by which (x)  $10,000,000  exceeds  (y) the  Aggregate  Bank  Liabilities
outstanding  on that day,  whether  such  excess  results  from a failure by the
Borrower  to borrow (or obtain  letters of credit) up to  $10,000,000  or from a
repayment  of  Revolving  Loans or  reduction  of  outstanding  letter of credit
liabilities  or due to any other reason.  In addition,  if the  within-described
revolving  financing  arrangements are terminated by the Borrower for any reason
or by the Bank as the  result of the  Borrower's  default,  the  Borrower  shall
forthwith  upon  such  termination  pay to the  Bank a sum  equal  to all of the
facility fees which would have become due (absent such termination)  pursuant to
the  immediately  preceding  sentence  during the  period  from the date of such
termination  through the  Expiration  Date,  assuming  for this  purpose that no
Aggregate Bank Liabilities would have been outstanding  during such period.  The
fees described in this Section are in addition to any balances and fees required
by the Bank or any of its  affiliates in connection  with any other services now
or hereafter made available to the Borrower.

        6.3. Other  Agreements.  The provisions of this letter agreement are not
in derogation or limitation  of any  obligations,  liabilities  or duties of the
Borrower  under any of the other Loan  Documents or any other  agreement with or
for the benefit of the Bank. No inconsistency in default provisions between this
letter agreement and any of the other Loan Documents or any such other agreement
will be deemed to create any additional grace period or otherwise  derogate from
the express  terms of each such default  provision.  No  covenant,  agreement or
obligation of the Borrower contained herein, nor any right or remedy of the Bank
contained herein,  shall in any respect be limited by or be deemed in limitation
of any inconsistent or additional  provisions contained in any of the other Loan
Documents or any such other agreement.

        6.4. Governing Law.   This letter agreement and the Revolving Note shall
be governed by, and construed and enforced in  accordance  with, the laws of The
Commonwealth of Massachusetts.

        6.5.  Addresses  for Notices,  etc. All notices,  requests,  demands and
other  communications  provided for  hereunder  shall be in writing and shall be
mailed or delivered to the applicable party at the address indicated below:
<PAGE>

                   If to the Borrower:

                   Zoom Telephonics, Inc.
                   207 South Street
                   Boston, MA  02111
                   Attention:  Steven T. Shedd, Chief Financial Officer

                   with a copy to:

                   Brown, Rudnick, Freed & Gesmer, P.C.
                   One Financial Center
                   Boston, MA 02111
                   Attention:  Lawrence M. Levy, Esq.

                   If to the Bank:

                   Fleet National Bank
                   High Technology Group
                   75 State Street
                   Boston, MA  02109
                   Attention:  Kimberly Martone, Vice President

or, as to each of the foregoing, at such other address as shall be designated by
such Person in a written notice to the other party complying as to delivery with
the  terms of this  Section.  All such  notices,  requests,  demands  and  other
communications shall be deemed delivered on the earlier of (i) the date received
or (ii) the date of delivery,  refusal or  non-delivery  indicated on the return
receipt if deposited in the United States mails, sent postage prepaid, certified
or registered mail, return receipt requested, addressed as aforesaid.

        6.6.  Binding Effect;  Assignment;  Termination.  This letter  agreement
shall be binding upon the Borrower,  its  successors and assigns and shall inure
to the  benefit  of the  Borrower  and the Bank and their  respective  permitted
successors and assigns. The Borrower may not assign this letter agreement or any
rights hereunder  without the express written consent of the Bank. The Bank may,
in accordance  with applicable law and with prior written notice to the Borrower
(except that, in the case of an assignment to a Federal Reserve Bank as security
for a borrowing by the Bank,  such notice shall not be  required),  from time to
time assign or grant  participation  in this  letter  agreement,  the  Revolving
Loans,  the Revolving  Note and/or the letters of credit issued  hereunder.  The
Borrower may terminate this letter agreement and the financing arrangements made
herein by giving  written  notice of such  termination to the Bank together with
payment of the sum described in the second sentence of ss.6.2;  provided that no
such  termination  will release or waive any of the Bank's rights or remedies or
any of the  Borrower's  obligations  under this letter  agreement  or any of the
other  Loan  Documents  unless  and  until  the  Borrower  has  paid in full the
Revolving  Loans and all  interest  thereon and all fees and charges  payable in
connection  therewith  and all  letters  of credit  issued  hereunder  have been
terminated.
<PAGE>

        6.7. Consent to Jurisdiction.  The Borrower  irrevocably  submits to the
non-exclusive  jurisdiction  of any  Massachusetts  court or any  federal  court
sitting  within  The  Commonwealth  of  Massachusetts  over any suit,  action or
proceeding  arising  out of or  relating  to this  letter  agreement  and/or the
Revolving Note. The Borrower irrevocably waives, to the fullest extent permitted
by law, any objection  which it may now or hereafter have to the laying of venue
of any such  suit,  action or  proceeding  brought in such a court and any claim
that any such suit,  action or  proceeding  has been brought in an  inconvenient
forum.  The  Borrower  agrees that final  judgment  in any such suit,  action or
proceeding  brought  in such a court  shall be  enforced  in any court of proper
jurisdiction  by a suit upon such judgment,  provided that service of process in
such action,  suit or  proceeding  shall have been effected upon the Borrower in
one of the manners  specified  in the  following  paragraph of this ss.6.7 or as
otherwise permitted by law.

         The  Borrower  hereby  consents  to process  being  served in any suit,
action or  proceeding of the nature  referred to in the  preceding  paragraph of
this ss.6.7  either (i) by mailing a copy  thereof by  registered  or  certified
mail, postage prepaid,  return receipt requested, to it at its address set forth
in ss.6.5 (as such  address  may be changed  from time to time  pursuant to said
ss.6.5) or (ii) by serving a copy  thereof  upon it at its  address set forth in
ss.6.5  (as such  address  may be  changed  from time to time  pursuant  to said
ss.6.5).

        6.8.  Severability.  In the  event  that any  provision  of this  letter
agreement or the application  thereof to any Person,  property or  circumstances
shall be held to any extent to be invalid or  unenforceable,  the  remainder  of
this  letter  agreement,  and the  application  of such  provision  to  Persons,
properties  or  circumstances  other  than  those as to  which it has been  held
invalid and unenforceable,  shall not be affected thereby, and each provision of
this  letter  agreement  shall be  valid  and  enforced  to the  fullest  extent
permitted by law.

VII.  DEFINED TERMS

        7.1. Definitions.  In addition to terms defined elsewhere in this letter
agreement, as  used in  this letter  agreement, the  following  terms  have  the
following respective meanings:

         "Aggregate  Bank  Liabilities"  - At any  time,  the  sum  of  (i)  the
principal  amount of all Revolving  Loans then  outstanding,  plus (ii) all then
undrawn  amounts of letters of credit  issued by the Bank for the account of the
Borrower,  plus (iii) all amounts  then drawn on any such letter of credit which
at said date shall not have been reimbursed to the Bank by the Borrower.

         "Bank  Certificate"  - A  certificate  signed by an officer of the Bank
setting forth any additional  amount  required to be paid by the Borrower to the
Bank  pursuant to ss.1.2,  ss.1.6,  ss.1.7 or ss.6.1 of this  letter  agreement,
which  certificate  shall be submitted by the Bank to the Borrower in connection
with each demand made at any time by the Bank upon the Borrower  with respect to
any such additional  amount,  and each such certificate shall, save for manifest
error,  constitute  presumptive evidence of the additional amount required to be
paid by the Borrower to the Bank upon each  demand.  A claim by the Bank for all
or any part of any additional  amount required to be paid by the Borrower may be
made  before  and/or  after the end of the  Interest  Period to which such claim
relates or during  which such  claim has  arisen  and  before  and/or  after any

<PAGE>

payment  hereunder to which such claim relates.  Each Bank Certificate shall set
forth in  reasonable  detail the basis for and the  calculation  of the claim to
which it relates.

         "Borrowing Base" - As determined at any date, the sum of (i) 80% of the
aggregate principal amount of the Qualified Domestic Receivables of the Borrower
then  outstanding,  plus  (ii)  80% of the  aggregate  principal  amount  of the
Qualified Foreign  Receivables of the Borrower then outstanding,  plus (iii) 50%
of the aggregate principal amount of the Other Acceptable Foreign Receivables of
the Borrower then outstanding;  provided,  however,  that the total amount which
may be  contributed to Borrowing Base by Other  Acceptable  Foreign  Receivables
pursuant  to  this  clause  (iii)  will  not  at  any  time  exceed  10%  of the
then-effective total Borrowing Base.

         "Business  Day" - Any day which is not a  Saturday,  nor a Sunday nor a
public  holiday  under  the  laws  of  the  United  States  of  America  or  The
Commonwealth of  Massachusetts  applicable to a national bank;  provided however
that  if the  applicable  provision  relates  to a LIBOR  Loan,  then  the  term
"Business Day" shall not include any day on which dealings are not carried on in
the  London  interbank  market or on which  banks are not open for  business  in
London.

         "Capital Base" - At any time, the sum of (i) the consolidated  Tangible
Net  Worth  of the  Borrower  and  Subsidiaries  then  existing,  plus  (ii) the
principal amount of Subordinated Debt of the Borrower then outstanding  (nothing
contained   herein  being  deemed  to  authorize  the  incurrence  of  any  such
Subordinated Debt).

         "Current  Liabilities"  - All  liabilities  of the Borrower  and/or any
Subsidiary of the Borrower which are properly shown as current  liabilities on a
consolidated balance sheet of the Borrower prepared in accordance with generally
accepted  accounting   principles   consistently  applied.   Further,   "Current
Liabilities" will in any event be deemed to include the Revolving Loans.

         "ERISA" - The  Employee  Retirement  Income  Security  Act of 1974,  as
amended.

         "Eurocurrency  Liabilities" - Has the meaning  assigned to that term in
Regulation  D of the Board of Governors  of the Federal  Reserve  System (or any
successor),  as in effect  from  time to time,  or in any  successor  regulation
relating to the liabilities described in said Regulation D.
<PAGE>

         "Eurodollar  Interest Rate" - For any Interest Period, an interest rate
per annum,  expressed as a  percentage,  determined  by the Bank pursuant to the
following formula:

                           *EIR  =           LIBOR     +   ERI
                                            [1.00  -  RR]

                             Where EIR        =        Eurodollar Interest Rate
                             LIBOR   =        See definition of LIBOR
                             RR               =        Reserve Rate
                             ERI              =        Eurodollar Rate Increment

               *EIR and each component thereof to be rounded upwards to the next
                higher 1/16th of 1%

        "Eurodollar Rate Increment" - One and one-half percent (1.5%) per annum.

         "Expiration Date" - August 31, 1997, unless extended by the Bank, which
extension may be given or withheld by the Bank in its sole discretion.

         "Floating Rate"  -  As defined in ss.1.2.

         "Floating  Rate Loan" - Any Revolving  Loan which bears interest at the
Floating Rate.

         "FSC" -   Zoom Telephonics  Foreign  Sales Corporation,  a U.S.  Virgin
Islands corporation which is a wholly-owned Subsidiary of the Borrower.

         "Impositions"  -  All  present  and  future  taxes,   levies,   duties,
impositions,  deductions,  charges and withholdings  applicable to the Bank with
respect to any LIBOR Loan, excluding, however, any taxes imposed directly on the
Bank's income and any franchise  taxes imposed on it by the  jurisdiction  under
the laws of which the Bank is organized or any political subdivision thereof.

         "Indebtedness"  - All  obligations  of a  Person,  whether  current  or
long-term,  senior or subordinated,  which in accordance with generally accepted
accounting  principles  would be  included  as  liabilities  upon such  Person's
balance sheet at the date as of which  Indebtedness,  is to be  determined,  and
shall also include  guaranties,  endorsements  (other than for collection in the
ordinary course of business) or other  arrangements  whereby  responsibility  is
assumed  for the  obligations  of others,  whether by  agreement  to purchase or
otherwise acquire the obligations of others, including any agreement, contingent
or  otherwise,  to furnish  funds  through the  purchase  of goods,  supplies or
services for the purpose of payment of the obligations of others.

         "Interest  Payment  Date" - As to each  LIBOR  Loan,  the  last  day of
Interest  Period  applicable  to such LIBOR Loan;  provided that if any Interest
Period is in excess of three  months,  there will be two Interest  Payment Dates
applicable  thereto - the first being three months from the commencement date of
such Interest Period and the second being the last day of such Interest Period.
<PAGE>

         "Interest  Period" - As to each LIBOR Loan, the period  commencing with
the date of the making of such LIBOR Loan and ending  one,  two or three  months
thereafter,  as the Borrower  may select;  provided  that (A) any such  Interest
Period which would  otherwise  end on a day which is not a Business Day shall be
extended to the next succeeding  Business Day unless such Business Day occurs in
a new  calendar  month,  in which  case such  Interest  Period  shall end on the
immediately preceding Business Day, (B) any such Interest Period which begins on
a day for which there is no numerically  corresponding day in the calendar month
during which such  Interest  Period is to end shall end on the last Business Day
of such calendar  month,  and (C) no Interest Period may be selected which would
end after the Expiration Date.

         "LIBOR" - With respect to each Interest  Period for a LIBOR Loan,  that
rate per annum  (rounded  upward,  if  necessary,  to the nearest 1/16 of 1%) at
which deposits in United States Dollars are offered to the Bank, for delivery on
the first day of the applicable  Interest Period, in the London interbank market
at 10:00  a.m.  London  time two  Business  Days  prior to the  first day of the
applicable  Interest  Period  for a term  equal  to the term of the  LIBOR  Loan
requested for such Interest Period and in an amount  substantially  equal to the
principal  amount of the relevant  LIBOR Loan. The Bank shall give prompt notice
to the Borrower of LIBOR as determined for each LIBOR Loan and such notice shall
be conclusive and binding, absent manifest error.

         "LIBOR Loan" - Any Revolving  Loan which bears interest at a Eurodollar
Interest Rate.

         "Loan  Documents" - Each of this letter  agreement,  the Revolving Note
and  each  other  instrument,   document  or  agreement  evidencing,   securing,
guaranteeing  or relating in any way to any of the Revolving Loans or any of the
letters of credit  issued  hereunder,  all  whether now  existing  or  hereafter
arising or entered into.

         "London"  -  The City of London in England.

         "Maximum  Revolving  Amount"  - At any date as of  which  same is to be
determined,  the amount by which (x) $10,000,000  exceeds (y) the sum of (i) all
then undrawn  amounts of letters of credit issued by the Bank for the account of
the Borrower plus (ii) all amounts then drawn on any such letter of credit which
at said date  shall not have been  reimbursed  to the Bank by the  Borrower  (by
virtue of the making of a Revolving Loan or otherwise).

         "Net  Income"  (or "Net Loss") - The book net income (or book net loss,
as the case may be) of a Person for any period, after all taxes actually paid or
accrued  and all  expenses  and other  charges  determined  in  accordance  with
generally accepted accounting principles consistently applied.

         "Net Quick Assets" - Such current  assets of the Borrower as consist of
cash, cash-equivalents,  readily-marketable  securities and Receivables (less an
allowance for bad debt consistent with the Borrower's prior experience).
<PAGE>

         "Obligations" - All Indebtedness,  covenants,  agreements,  liabilities
and obligations, now existing or hereafter arising, made by the Borrower with or
for the benefit of the Bank or owed by the Borrower to the Bank in any capacity.

         "Other  Acceptable  Foreign  Receivables"  - Those  Receivables  of the
Borrower  which are not  Qualified  Foreign  Receivables  (because  they are not
supported  by  acceptable  credit  enhancement)  but  which  satisfy  all of the
criteria set forth below to be  Qualified  Domestic  Receivables  other than the
requirement that the relevant customer be located in the United States; provided
that in each  case  the  Bank  has  approved  the  relevant  customer  as  being
satisfactory for this purpose. The approval of the Bank of any customer for this
purpose may be given or withheld by the Bank, and any approval  previously given
may at any time be withdrawn by the Bank, all at the Bank's sole discretion.  In
addition, if FSC and/or Zoom UK executes and delivers to the Bank (together with
such corporate  documentation as the Bank may reasonably require) and thereafter
maintains in effect a guaranty of the Borrower's  Obligations  (such guaranty to
be  satisfactory  in form and  substance  to the Bank),  then "Other  Acceptable
Foreign  Receivables"  will be  deemed to  include  such  amounts  as are now or
hereafter  owed to the Borrower by FSC and/or Zoom UK, as applicable  (exclusive
of  any  such  amounts  includable  in the  definition  of  "Qualified  Domestic
Receivables" or "Qualified Foreign  Receivables"),  even though such amounts are
owed to the Borrower by an entity  related to the Borrower,  to the extent,  but
only to the  extent,  that such  amounts  arise  out of sales of the  Borrower's
products made by FSC and/or Zoom UK, as the case may be, to unrelated  customers
and that the Receivables of FSC and/or Zoom UK, as the case may be, generated by
such  sales  satisfy  all of  the  requirements  set  forth  in the  immediately
preceding two sentences to be "Other Acceptable Foreign Receivables", other than
the requirement that such Receivables be owned by the Borrower.

         "Parent" - Zoom  Telephonics,  Inc., a Canadian  corporation which owns
100% of the outstanding capital stock of the Borrower.

         "Parent's  Subsidiaries" - Any corporation or other entity of which the
Parent and/or any of the other  Parent's  Subsidiaries,  directly or indirectly,
owns,  or has the right to control or direct the voting of, fifty (50%)  percent
or more of the  outstanding  capital stock or other  ownership  interest  having
general voting power (under ordinary circumstances).

         "PBGC"  -   The Pension Benefit Guaranty Corporation  or any  successor
thereto.

         "Person" - An individual,  corporation,  partnership, limited liability
company, joint venture, trust or unincorporated organization, or a government or
any agency or political subdivision thereof.

         "Qualified  Domestic  Receivables"  -  Only  those  Receivables  of the
Borrower  which arise out of bona fide sales made to  customers  of the Borrower
(which  customers  are  located in the United  States and are  unrelated  to the
Borrower) in the  ordinary  course of the  Borrower's  business and which remain
unpaid  no  more  than  90  days  past  the  respective  invoice  dates  of such

<PAGE>

Receivables, the payment of which is not in dispute. Unless the Bank in its sole
discretion  otherwise  determines with respect to any  Receivable,  a Receivable
which would otherwise be a Qualified Domestic  Receivable shall be deemed not to
be a Qualified Domestic  Receivable (i) if such Receivable is not free and clear
of all adverse interests in favor of any Person other than the Borrower; (ii) if
such  Receivable  is  subject  to  any  deduction,   off-set,   contra  account,
counterclaim or condition;  (iii) if a field  examination made by the Bank fails
to confirm that such  Receivable  exists and  satisfies  all of the criteria set
forth herein to be a Qualified Domestic  Receivable;  (iv) if such Receivable is
not properly invoiced at the date of sale; (v) if the customer or account debtor
has disputed  liability or made any claim with respect to the  Receivable or the
merchandise  covered thereby (provided,  however,  that if such dispute or claim
relates to less than 15% of the  principal  amount of the  relevant  Receivable,
then only the disputed  amount and not the entire amount of such Receivable will
be deemed excluded pursuant to this clause (v)); (vi) if the customer or account
debtor is subject to a petition  for  bankruptcy  or any other  application  for
relief under the Bankruptcy Code (whether or not such petition was filed by said
customer or account  debtor) or is subject to an  assignment  for the benefit of
creditors,  or if said customer's or account debtor's business is suspended,  or
if the  customer or account  debtor is  insolvent  or is not paying its debts as
they become due, or if a receiver or trustee is appointed  for any of its assets
or  affairs;  (vii) if the  customer  or account  debtor has failed to pay other
Receivables  so that an aggregate of 25% of the total  Receivables  owing to the
Borrower by such customer or account debtor has been  outstanding  for more than
90 days past  their  respective  due  dates;  or  (viii) if the Bank  reasonably
believes that  collection  of such  Receivable is insecure or that it may not be
paid  by  reason  of  financial  inability  to pay or  otherwise  or  that  such
Receivable  is not for any  reason  suitable  for use as a basis  for  borrowing
hereunder.  In addition,  if Tribe  executes and delivers to the Bank  (together
with  such  corporate  documentation  as the Bank may  reasonably  require)  and
thereafter  maintains in effect a guaranty of the Borrower's  Obligations  (such
guaranty to be satisfactory in form and substance to the Bank),  then "Qualified
Domestic  Receivables"  will be deemed to  include  such  amounts  as are now or
hereafter  owed by Tribe to the  Borrower  (even though such amounts are owed to
the Borrower by an entity  related to the  Borrower) to the extent,  but only to
the extent, that such amounts arise out of sales of the Borrower's products made
by Tribe to unrelated  customers and that the  Receivables of Tribe generated by
such  sales  satisfy  all of  the  requirements  set  forth  in the  immediately
preceding two  sentences to be Qualified  Domestic  Receivables,  other than the
requirement that such Receivables be owned by the Borrower.

         "Qualified  Foreign  Receivables"  - Those  Receivables of the Borrower
which  satisfy  all of the  criteria  set forth above to be  Qualified  Domestic
Receivables  other than the requirement that the relevant customer be located in
the United  States;  provided  that each such  Qualified  Foreign  Receivable is
supported by credit  insurance  or a letter of credit,  in each case issued by a
credit enhancer  satisfactory to the Bank and in each case containing  terms and
conditions satisfactory to the Bank. In addition, if FSC and/or Zoom UK executes
and delivers to the Bank (together with such corporate documentation as the Bank
may  reasonably  require) and  thereafter  maintains in effect a guaranty of the
Borrower's  Obligations  (such guaranty to be satisfactory in form and substance
to the Bank),  then "Qualified  Foreign  Receivables"  will be deemed to include
such amounts as are now or hereafter owed to the Borrower by FSC and/or Zoom UK,
as  applicable  (even  though such amounts are owed to the Borrower by an entity

<PAGE>

related  to the  Borrower)  to the  extent,  but only to the  extent,  that such
amounts  arise out of sales of the  Borrower's  products made by FSC and/or Zoom
UK, as the case may be, to unrelated  customers and that the  Receivables of FSC
and/or Zoom UK, as the case may be,  generated by such sales  satisfy all of the
requirements  set forth in the  immediately  preceding  sentence to be Qualified
Foreign  Receivables,  other than the requirement that such Receivables be owned
by the Borrower. Amounts included in "Qualified Foreign Receivables" pursuant to
the  immediately  preceding  sentence  are not to be "double  counted"  with any
amounts  includable in "Qualified  Domestic  Receivables"  or "Other  Acceptable
Foreign Receivables".

         "Receivables"  - As to any  Person,  all of such  Person's  present and
future accounts receivable for goods sold or for services rendered.

         "Reserve Rate" - The aggregate rate,  expressed as a decimal,  at which
the Bank would be required to maintain  reserves under Regulation D of the Board
of  Governors  of the  Federal  Reserve  System  (or any  successor  or  similar
regulation  relating  to  such  reserve   requirements)   against   Eurocurrency
Liabilities,  as well as any other reserve  required of the Bank with respect to
the LIBOR Loans. The Eurodollar Interest Rate shall be adjusted automatically on
and as of the effective date of any change in the Reserve Rate.

         "Senior  Debt"  -  All   Indebtedness   of  the  Borrower   and/or  its
Subsidiaries which does not constitute Subordinated Debt.

         "Subordinated  Debt"  - Any  Indebtedness  of  the  Borrower  which  is
expressly  subordinated,  pursuant  to a  subordination  agreement  in form  and
substance satisfactory to the Bank, to all Indebtedness now or hereafter owed by
the Borrower to the Bank.

         "Subsidiary"  - Any  corporation  or other entity of which the Borrower
and/or any of its Subsidiaries,  directly or indirectly,  owns, or has the right
to  control  or  direct  the  voting  of,  fifty  (50%)  percent  or more of the
outstanding  capital stock or other  ownership  interest  having  general voting
power (under ordinary circumstances).

         "Tangible  Net  Worth" - An  amount  equal to the  total  assets of any
Person  (excluding  (i) the total  intangible  assets of such  Person,  (ii) any
minority interests in Subsidiaries and (iii) any assets representing amounts due
from any  officer or  employee  of such  Person or from any  Subsidiary  of such
Person) minus the total  liabilities  of such Person.  Total  intangible  assets
shall be deemed to include, but shall not be limited to, the excess of cost over
book  value  of  acquired  businesses  accounted  for  by the  purchase  method,
formulae,  trademarks, trade names, patents, patent rights and deferred expenses
(including,   but  not  limited  to,  unamortized  debt  discount  and  expense,
organizational   expense,   capitalized  software  costs  and  experimental  and
development expenses).

         "Tribe" - Tribe Computer  Works  Incorporated,  a Delaware  corporation
which is a wholly-owned Subsidiary of the Borrower.
<PAGE>

         "Zoom UK" - Zoom Telephonics,  Ltd., a United Kingdom corporation which
is a wholly-owned Subsidiary of the Borrower.

         Any defined term used in the plural  preceded by the  definite  article
shall be taken to encompass all members of the relevant class.  Any defined term
used in the singular  preceded by "any" shall be taken to indicate any number of
the members of the relevant class.




<PAGE>


         This letter  agreement is executed,  as an instrument under seal, as of
the day and year first above written.

                                                 Very truly yours,

                                                 ZOOM TELEPHONICS, INC.


                                                 By___________________
                                                 Name:
                                                 Title:


                                                 By____________________
                                                 Name:
                                                 Title:


Accepted and agreed:

FLEET NATIONAL BANK


By__________________
    Its


By__________________
    Its



<PAGE>





                               DISCLOSURE SCHEDULE



Item 2.1(a)           Jurisdictions in which Borrower is qualified; Subsidiaries

Item 2.1(e)           Litigation

Item 4.1              Existing Indebtedness

Item 4.2              Existing Liens

Item 4.3              Existing Guaranties










Exhibit 11.  Statement re computation of per share earnings



<TABLE>
<CAPTION>

                                                         1994                            1995                           1996
                                                         ----                            ----                           ----
                                                       Fully                           Fully                           Fully
                                        Primary        Diluted         Primary         Diluted          Primary        Diluted


<S>                                     <C>            <C>             <C>             <C>              <C>            <C>        
Net income                              $ 2,813,578    $ 2,813,578     $ 6,063,080     $ 6,063,080      $ 2,479,922    $ 2,479,922
                                        ===========    ===========     ===========     ===========      ===========    ===========
 Weighted average of shares             6,010,282      6,010,282       6,074,788       6,074,788        7,068,314      7,068,314
outstanding
 Incremental shares from the assumed    --             18,000          370,527         383,291          121,027        121,027
exercise of dilutive stock options

Common shares assumed to have been      --             (14,614)        (319,212)       (284,814)        (26,950)       (26,950)
repurchased, treasury stock method                     -------         --------        --------         -------        -------

Weighted average common and common      6,010,282      6,013,668       6,126,203       6,173,265        7,162,391      7,162,391
equivalent shares outstanding           =========      =========       =========       =========        =========      =========

Net income per share                    $         .47  $         .47   $         .99   $         .98    $         .35  $       .35
                                        =============  =============   =============   =============    =============  ===========
</TABLE>





Exhibit 21.    Subsidiaries of Zoom



                              LIST OF SUBSIDIARIES

Zoom Telephonics, Inc., a Delaware corporation

Zoom Telephonics Foreign Sales Corporation, a U.S. Virgin Islands corporation

Zoom Telephonics, Ltd., a United Kingdom corporation

Tribe Acquisition Corporation, a Delaware corporation






   Exhibit 23. Consent of KPMG Peat Marwick LLP




                         CONSENT OF INDEPENDENT AUDITORS



   The Board of Directors
   Zoom Telephonics, Inc.


   We consent to incorporation  by reference in the registration  statement (No.
   33-42834) on Form S-8 of Zoom Telephonics,  Inc. of our report dated February
   18, 1997,  relating to the consolidated  balance sheets of Zoom  Telephonics,
   Inc.  and  subsidiaries  as of December  31,  1996 and 1995,  and the related
   consolidated  statements of income,  stockholders' equity, and cash flows and
   related  schedule  for  each of the  years  in the  three-year  period  ended
   December  31,  1996,  which  report  appears in the  December 31, 1996 annual
   report on Form 10-K of Zoom Telephonics, Inc.




                                                KPMG Peat Marwick LLP




   Boston, Massachusetts
   March 28, 1997


<TABLE> <S> <C>


<ARTICLE>                     5
       
<S>                                      <C>


<MULTIPLIER>                                       1
<CURRENCY>                                       USD
<PERIOD-TYPE>                                   Year
<FISCAL-YEAR-END>                        Dec-31-1996
<PERIOD-START>                           Jan-01-1996
<PERIOD-END>                             Dec-31-1996
<EXCHANGE-RATE>                                    1
<CASH>                                     9,172,186
<SECURITIES>                                       0
<RECEIVABLES>                             18,970,041
<ALLOWANCES>                               3,564,101
<INVENTORY>                               19,057,575
<CURRENT-ASSETS>                          50,984,293
<PP&E>                                     4,081,406
<DEPRECIATION>                             1,971,787
<TOTAL-ASSETS>                            56,782,154
<CURRENT-LIABILITIES>                      9,427,197
<BONDS>                                            0
                              0
                                        0
<COMMON>                                  24,890,468
<OTHER-SE>                                22,464,489
<TOTAL-LIABILITY-AND-EQUITY>            56,782,154
<SALES>                                  116,569,378
<TOTAL-REVENUES>                         100,195,021
<CGS>                                     79,803,297
<TOTAL-COSTS>                             16,829,814
<OTHER-EXPENSES>                             292,514
<LOSS-PROVISION>                                   0
<INTEREST-EXPENSE>                           169,248
<INCOME-PRETAX>                            3,854,423
<INCOME-TAX>                               1,374,501
<INCOME-CONTINUING>                        2,479,922
<DISCONTINUED>                                     0
<EXTRAORDINARY>                                    0
<CHANGES>                                          0
<NET-INCOME>                               2,479,922
<EPS-PRIMARY>                                   0.35
<EPS-DILUTED>                                   0.35
        


</TABLE>


<TABLE>
<CAPTION>
                                                                                                      Schedule II
                             ZOOM TELEPHONICS, INC.
                        VALUATION AND QUALIFYING ACCOUNTS
                   Years ending December 31, 1994, 1995, 1996


                                                       Balance at                                         Balance at
                                                      beginning of     Charged to      Amounts             end of
                    Description                           year          expense        written off          year
- ------------------------------------------------------------------------------------------------------------------

<S>                                                 <C>                <C>              <C>            <C> 
Reserve for doubtful accounts                          $     191,921   $     62,079     $        -     $  254,000
Reserve for price protection                                 126,754      2,610,591      1,978,557        758,788
Reserve for sales returns                                    250,747        366,902         87,000        530,649
Other allowances                                             257,473      1,548,537      1,161,983        644,027
                                                    ------------------  --------------  -------------  -----------
Year ending December 31, 1994                          $     826,895     $4,588,109     $3,227,540     $2,187,464
                                                    ==================  ==============  =============  ===========

Reserve for doubtful accounts                          $     254,000    $   770,000    $   175,124     $  848,876
Reserve for price protection                                 758,788      2,228,039      2,486,110        500,717
Reserve for sales returns                                    530,649        400,000        210,153        720,496
Other allowances                                             644,027      1,463,933      1,460,586        647,374
                                                    ------------------  --------------  -------------  -----------
Year ending December 31, 1995                          $   2,187,464     $4,861,972     $4,331,973     $2,717,463
                                                    ==================  ==============  =============  ===========

Reserve for doubtful accounts                          $     848,876    $   400,000    $   165,568     $1,083,308
Reserve for price protection                                 500,717      3,536,410      3,328,531        708,596
Reserve for sales returns                                    720,496              -            442        720,054
Other allowances                                             647,374      1,855,183      1,450,414      1,052,143
                                                    ------------------  --------------  -------------  -----------
Year ending December 31, 1996                          $   2,717,463     $5,791,593     $4,944,955     $3,564,101
                                                    ==================  ==============  =============  ===========
</TABLE>



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