RADVISION to Report Third Quarter 2006 Results on October 26

FAIR LAWN, New Jersey, October 3, 2006 -- 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 that it will report its 2006 third quarter financial results on Thursday, October 26, 2006. The press release will be issued at approximately 8:00 a.m. (Eastern).

A conference call has been scheduled for 9:00 a.m. (Eastern) on that same day. To access the conference call, please dial 1-888-791-1856 (International dialers may call +1-210-234-0005) by 8:45 a.m. (Eastern) on October 26th. The passcode “RADVISION” will be required to access the live conference call. A live webcast of the conference call also will be available on the Company's website and archived on the site until the next quarter. Simply click on the following link or copy it onto your browser: www.radvision.com/Corporate/Investors/FinancialReports/.

Boaz Raviv, Chief Executive Officer, and Tsipi Kagan, Chief Financial Officer, will review the quarter’s results and discuss the Company’s future outlook on the call. Management also will be available for questions from the investment community.

A PowerPoint presentation highlighting key financial metrics will be available in the Investor Relations section of the company’s website, www.radvision.com. The presentation will be available beginning at 8:00 a.m. (Eastern) on October 26th and remain on the site through the third quarter of 2006.

A replay of the call will be available beginning approximately one hour after the conclusion of the call through 11:59 p.m. (Eastern) on November 2nd. To access the replay, please dial 1-866-454-2130 (International dialers may call +1-203-369-1246).

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.