Multimedia Terminal Framework Product Family Awarded for Exceptional IPTV Solutions

TEL AVIV (January 21, 2009) –

RADVISION® Ltd. (Nasdaq: RVSN), a leading provider of video network infrastructure and developer tools for unified visual communications over IP, 3G, and emerging next-generation IMS networks, today announced that Technology Marketing Corporation’s (TMC®) INTERNET TELEPHONY magazine has named its Multimedia Terminal Framework product family as a recipient of its 2008 IPTV Excellence Award presented by INTERNET TELEPHONY magazine (www.itmag.com).

RADVISION’s Multimedia Terminal Framework (MTF) is a high-level interface solution for building Customer Premise Equipment (CPE) devices such as Set-Top-Boxes and TV supporting any media up to high quality HD video conferencing voice and video capabilities. IPTV solutions can be easily enhanced with video communication and conferencing capabilities by using RADVISION’s MTF high level APIs that encapsulate VoIP signaling and media. Using MTF speeds time to market and frees developers to focus on differentiating features, application development, hardware integration and user interaction.

“Multimedia Terminal Framework has made a powerful impact in the IPTV market place,” said Greg Galitzine, Editorial Director of INTERNET TELEPHONY. “Providing innovative solutions like the MTF has earned RADVISION recognition for excellence from the editors of INTERNET TELEPHONY.”

“My congratulations to RADVISION for earning their place on our elite list of the 2008 IPTV Excellence Award winners. Their commitment to making significant achievements in IPTV is commendable and we look forward to future innovations from them,” indicated Rich Tehrani, Editor-in-Chief of INTERNET TELEPHONY.

RADVISION is featured in the October 2008 issue of INTERNET TELEPHONY magazine, www.itmag.com, along with all the 2008 IPTV Excellence Award winners.

For more information, please visit www.tmcnet.com.

About RADVISION

RADVISION (Nasdaq: RVSN) is the industry’s leading provider of market-proven products and technologies for unified visual communications over IP, 3G and IMS networks. With its complete set of standards-based video networking infrastructure and developer toolkits for voice, video, data and wireless communications, RADVISION is driving the unified communications evolution by combining the power of video, voice, data and wireless – for high definition video conferencing systems, innovative converged mobile services, and highly scalable video-enabled desktop platforms on IP, 3G and emerging next-generation IMS networks. To gain additional insights into our products, technology and opinions, visit blog.radvision.com. For more information about RADVISION, visit www.radvision.com.

About INTERNET TELEPHONY magazine

INTERNET TELEPHONY has been the IP Communications Authority since 1998(TM). Beginning with the first issue in February of 1998, INTERNET TELEPHONY magazine has been providing unbiased views of the complicated converged communications space. INTERNET TELEPHONY offers rich content from solutions-focused editorial content to reviews on products and services from TMC Labs. INTERNET TELEPHONY magazine reaches more than 225,000 readers, including pass-along readers. For more information, please visit www.itmag.com.

About TMC

Technology Marketing Corporation (TMC) is an integrated global media company helping our clients build communities in print, in person and online. TMC publishes Customer Interaction Solutions, INTERNET TELEPHONY, Unified Communications, and IMS Magazine. TMC is also the first publisher to test new products in its own on-site laboratories, TMC Labs. TMCnet, TMC’s Web site, is the leading source of news and articles for the communications and technology industries. TMCnet is read by nearly three million unique visitors each month worldwide, according to Webtrends. In addition, TMC produces INTERNET TELEPHONY Conference & EXPO, Call Center 2.0 Conference and Communications Developer Conference.

For more information about TMC, visit www.tmcnet.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 20-F 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.

Source: RADVISION