Zoom and RingCentral deliver improved Modem-On-Hold in V.92
With these money-saving modems, you don't tie up a phone line while online

Boston, MA, and Redwood Shores, CA, April 8, 2002 — Zoom Telephonics, Inc. (NASDAQ: ZOOM) will begin shipping BuzMe V.92 Call Notification Software from RingCentral Inc.with all Zoom V.92 modems for Windows-based computers. If a modem user's phone service includes the Call Waiting option, the user can receive a voice call while connected to the Internet on that same line. Users can then place the Internet connection on hold and answer the voice call. When the voice call is complete, the Internet session can be quickly and easily resumed.

The length of time an Internet session can be placed on hold using the V.92 Modem-On-Hold feature is determined by the Internet Service Provider. BuzMe's countdown clock conveniently shows how much time is available for a conversation when the data connection is placed on hold. Call management options allow the user to return to the Internet when the call is complete, or drop the Internet connection if the voice call requires an extended period of time.

Zoom's V.92 modems also provide shorter connection times, plus faster upload and download speeds to significantly improve the Internet experience. RingCentral, in cooperation with Zoom, is including BuzMe V.92 Internet Call Control software with Zoom brand V.92 modems and Zoom's Hayes brand V.92 modems.

" BuzMe V.92 is a great addition to our V.92 modems," said Frank Manning, President and CEO of Zoom Telephonics. "This software gives our V.92 modem users a powerful, easy-to-use way to share a single phone line for voice calls and Internet access."

BuzMe software provides a convenient and friendly user interface with powerful options for handling phone calls, including: Caller ID, the countdown clock, call logging, and easy call management. Caller ID identifies who is calling when the software is used with the many Zoom modems that include Caller ID support.

The Modem- On -Hold features of Zoom V.92 modems and BuzMe software save users time and money. Time is saved when an Internet connection can be placed on hold, so the need to negotiate a new modem connection is eliminated. Money is saved by eliminating the need for both a voice line and a separate modem line.

" The modem-on-hold feature of V.92 strengthens users' control of the 56K Internet experience," said Vlad Shmunis, CEO of RingCentral. "With the addition of RingCentral's software, Zoom V.92 users will no longer have to worry about missing another phone call while tying up a phone line."

Upgrade to BuzMe V.92 Plus

BuzMe V.92 users can upgrade to BuzMe V.92 Plus service with just a click of a button. BuzMe V.92 Plus service costs $5.95 a month and works with call forwarding from phone companies to deliver enhanced call control and voice messaging tailored to Internet users.

Working in conjunction with the BuzMe V.92 Plus service, BuzMe notifies on-line users of incoming calls. The user can then take several actions: reply with pre-recorded responses, reply using text-to-voice messaging, or forward the caller to another phone number. All actions are taken without dropping the Internet connection.

BuzMe V.92 Plus can accept voice messages anytime the user is not available to answer the phone. Unanswered calls are forwarded to a BuzMe V.92 Plus server, which enables enhanced call management options. As an example, the server can record voice messages and allow them to be heard over the phone, through an Internet connection, or forwarded to the user's e-mail as a multimedia attachment.

About RingCentral, Inc.

Founded in 1993, RingCentral, Inc. is a leading supplier of PC-based fax and telephony communications software. The company makes and distributes its telephony and messaging software directly to consumers, service providers, and PC/modem manufacturers.

RingCentral's partners include Zoom, Acer, Conexant, IBM, Fujitsu, Compaq, and Hewlett Packard among others. With millions of units of its telecommunications and messaging software shipped, RingCentral continues to grow by aggressively developing and distributing cutting-edge telecommunications software products for consumers and businesses worldwide. For more information visit RingCentral, Inc. at www.ringcentral.com

About Zoom

Zoom Telephonics, a communications leader since 1977, designs, produces and markets dial-up modems, cable and ADSL modems, wireless LAN products, home and small office networking devices, and other data communication products under the Zoom, Hayes and Global Village brands. Zoom products are available in thousands of the highest volume computer retailers worldwide. For more information visit Zoom at www.zoom.com.

Ring Central: Rob Thompsen
robt@ringcentral.com
650-632-4301