RADVISION'S INVISION Wins INTERNET TELEPHONY 2002 Product of the Year Award; INTERNET TELEPHONY Chooses Industry's First Videoconferencing Network Appliance For Coveted Honor

Business Wire, Jan 8, 2003

Business Editors/High-Tech Writers

GLEN ROCK, N.J--(BUSINESS WIRE)--Jan. 8, 2003

RADVISION (NASDAQ: RVSN) today announced that its INVISION line of videoconferencing network appliances, rolled out in early November, has been named by INTERNET TELEPHONY(R) magazine as a Product of the Year for 2002.

Unique in the industry, the INVISION family of products provides IT managers with plug-and-play devices that are easily ordered and deployed into any enterprise network for turn-key videoconferencing over IP and ISDN.

"RADVISION's driving goal has been to take videoconferencing infrastructure and make it simple to deploy and manage while providing the most advanced features and functionality in the industry today," said Gadi Tamari, CEO of RADVISION. "INTERNET TELEPHONY's designation of INVISION as one of its products of the year for 2002 reinforces our belief that this is a revolutionary product that will drive video-based communications into the enterprise by making a videoconferencing network easy to set up and administer right out of the box, something IT managers have told us that they need before mass adoption will occur."

"Network Appliance" is a general product category for standardized devices that are preconfigured, scaleable, and designed to be plugged into a network for easy deployment and management. INVISION features the full functionality of an entire IP/ISDN videoconferencing infrastructure, from centralized management and multipoint conferencing to gateway services and value-added applications, in an integrated, easy-to-order and easy-to-install device.

"Our Product of the Year award recognizes outstanding technologies and approaches to delivering and enabling next generation voice and video for service providers and enterprises," said Greg Galitzine, editorial director of INTERNET TELEPHONY. "There were many strong contenders this year for such an award but, in the area of videoconferencing infrastructure, RADVISION's INVISION videoconferencing network appliance was obviously one of those technologies that we see as having the potential to radically simplify what has, up to now, been a complex process of rolling out videoconferencing in the enterprise."

About Internet Telephony Magazine

The convergence of voice, video, fax, and data has revolutionized the world of telecommunications. Internet telephony has been proven to drastically reduce long-distance costs and continues to provide unprecedented opportunities for service providers, resellers, developers, and end users alike. Internet Telephony is the only magazine that focuses on providing the information that will help you take advantage of this exciting technology. Launched as a quarterly publication in January 1998, Internet Telephony(R) magazine has been published monthly since October 1998. Internet Telephony(R) provides readers with the best information necessary to learn about and purchase the equipment, software, and services they need to take advantage of Internet telephony.

About TMC

Since 1972, Technology Marketing Corporation (TMC(TM)) has produced industry-leading trade magazines and events focused on technology and telecommunications. TMC(TM) publishes two magazines: Customer Inter@ction Solutions(TM) and Internet Telephony, and two online publications, Planet PDA(TM) Magazine and BiometriTech(TM) Magazine. TMC is also the first publisher to test new products in its own on-site laboratories, TMC Labs(TM), and provide factual and unbiased product reviews. TMC also produces INTERNET TELEPHONY Conference & Expo, Planet PDA(R): The Enterprise PDA Event and BiometriTech Conference & Expo. TMCnet.com publishes more than 25 topical online newsletters. For more information about TMC, visit its Web site at www.tmcnet.com.

About RADVISION

RADVISION (Nasdaq: RVSN) is the industry's leading provider of high quality, scalable and easy-to-use products and technologies for videoconferencing, video telephony, and the development of converged voice, video and data over IP and 3G networks. For more information please visit our website at www.radvision.com.

This press release contains forward-looking statements that are subject to risks and uncertainties. Factors that could cause actual results to differ materially from these forward-looking statements include, but are not limited to, general business conditions in the industry, changes in demand for products, the timing and amount or cancellation of orders and other risks detailed from time to time in RADVISION's filings with the Securities Exchange Commission, including RADVISION's Form 10-K Annual Report. These documents contain and identify other important factors that could cause actual results to differ materially from those contained in our projections or forward-looking statements. Stockholders and other readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date on which they are made. We undertake no obligation to update publicly or revise any forward-looking statement.