ORLANDO, Florida and FAIR LAWN, New Jersey, January 22, 2007 -- RADVISION (NASDAQ: RVSN), a leading provider of video network infrastructure and developer tools for unified visual communications over IP, 3G, and emerging next-generation networks, today announced the availability of its Click to Meet unified communications solution for IBM Lotus Sametime.

RADVISION’s Click to Meet brings advanced conferencing capability to IBM’s next generation unified communications platform enhancing Lotus Sametime’s instant messaging and conferencing capabilities.  Click to Meet enables users to create and initiate multiparty audio and video conferences directly from within Lotus Sametime.  By adding RADVISION’s unique multi-window video and audio plug-in to Lotus Sametime, users can now escalate Lotus Sametime instant messaging chat sessions into full multiparty audio and video sessions and extend those conferences to other devices such as standards-based video conferencing systems, 3G videophones or virtually any telephone available today.

RADVISION will be demonstrating Click to Meet for IBM Lotus Sametime at the Lotusphere 2007 Product Showcase in Orlando - booth 718, opening today. This unique solution from RADVISION was also chosen as a finalist for the Best IBM Lotus Sametime Collaboration Extension in the 13th annual IBM Lotus Awards, recognizing exceptional IBM PartnerWorld members that specialize in Lotus software solutions and excel in providing quality products, innovative solutions and superior services to customers. 

“The business value of our extensions to Lotus Sametime announced today is represented in Click to Meet being selected as a finalist for the Best IBM Lotus Sametime Collaboration Extension,” said Bob Romano, RADVISION Vice President Enterprise Marketing.  “Now anyone using a personal computer, telephone, mobile device, or video conferencing system can participate in a Lotus Sametime multiparty voice or video call.”

About RADVISION

RADVISION (NASDAQ: RVSN) is the industry’s leading provider of market-proven products and technologies for unified visual communications over IP and 3G 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 videoconferencing systems, innovative services on converged IP and 3G networks, and highly scalable video-enabled desktop platforms for IP and emerging next-generation networks. For more information about RADVISION, visit 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 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.

IBM, Lotus, and Sametime are trademarks of International Business Machines Corporation in the United States, other countries or both. All trademarks, trade names, service marks, and logos referenced herein belong to their respective companies.
The names of actual companies and products mentioned herein may be the trademarks of their respective owners.