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.


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.

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.

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.

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.

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.

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

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

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

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.

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

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.

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>

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.

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.

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.

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

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.

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.

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.

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

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>

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

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.

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.

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.

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.

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)

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)

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)

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)

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)

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)

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)

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)

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.

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:

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.

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

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

(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

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.

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.

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

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

(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.

(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:

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.

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

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

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.

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;

(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;

(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

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

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:

(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

(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.

(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

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:

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.

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

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.

"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.

"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).

"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

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

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.

"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.

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

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
<PREFERRED-MANDATORY>                              0
<PREFERRED>                                        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>