RADVISION Announces Schedule of Upcoming Conference Presentations; Presentations by CEO and CFO to Be Webcast and Archived

Business Wire, August 29, 2006

FAIR LAWN, N.J. -- 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 schedule of conference presentations to be made by Boaz Raviv, CEO, and Tsipi Kagan, CFO, in September. The presentations, which will be webcast live and archived for ninety days, can be accessed on the Company's website at http://www.radvision.com/IR_events as well as at the conference websites indicated below.

Thursday, September 7th
Kaufman Bros.
Ninth Annual Investor Conference, New York
12:40 to 1:10 p.m. (Eastern)
http://www.wsw.com/webcast/kbro11/rvsn/

Monday, September 11th
ThinkEquity Partners LLC
Fourth Annual Growth Conference, San Francisco
8:00 to 8:30 a.m. (Pacific)
http://www.wsw.com/webcast/tep10/rvsn/

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.