RADVISION® Announces Availability of the IMS DIAMETER Protocol Toolkit

Business Wire, Feb 13, 2007

The IMS DIAMETER Toolkit Joins the IMS Express(TM) - RADVISION's IMS Developer Suite - The Most Comprehensive Solution for Developers of Next Generation IMS Network Elements

TEL AVIV, Israel -- RADVISION (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 availability of the IP Multimedia Subsystem (IMS) DIAMETER Toolkit.

The RADVISION IMS DIAMETER Toolkit is a powerful software tool for the development of IMS DIAMETER-compliant network elements. The IMS DIAMETER Toolkit is standards-based (3GPP and TISPAN) and allows seamless integration with IMS based IP networks.

The RADVISION IMS DIAMETER Toolkit is part of RADVISION's IMS Developer Suite. The Suite includes all the signaling and media protocol toolkits, development frameworks, and testing tools needed to easily and cost-effectively meet the IMS challenge. The DIAMETER Toolkit works seamlessly with all RADVISION signaling protocol tools and enables the development of all IMS network entities. These include I-CSCF, S-CSCF, Application Servers, HSSs, Offline and Online charging functions.

"With the release of the IMS DIAMETER Toolkit, RADVISION offers the most complete suite of IMS-compliant development tools available in the market," said Adi Paz, Senior Director of Product Management and Marketing for RADVISION's Technology Business Unit. "With this release, we further strengthen our position as the industry leader in the emerging IMS market. As IMS is the basis of a truly converged network environment that encompasses 3G, wireline, packet cable and WiMAX, the market is eager to receive new IMS tools and solutions that help deliver products to market - fast and reliably."

The IMS DIAMETER Toolkit is available for all common operating systems. It is coded in ANSI C and cross-platform compatible. The open, object-oriented architecture delivers a programmer-friendly and highly flexible platform, and provides multiple API layers.

In addition to the IMS DIAMETER Toolkit, the RADVISION IMS Development Suite includes the IMS SIP Toolkit, the IMS SIP Server, MEGACO and RTP Toolkits, the IMS Client Developer Suite and the ProLab[TM] IMS Testing & Analysis Suite.

For further information on IMS, RADVISION has published a detailed white paper that can be downloaded from the company's Website at: http://www.radvision.com/Resources/WhitePapers/ims_sip.htm

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 video conferencing systems, innovative converged mobile services, and highly scalable video-enabled desktop platforms on IP, 3G and emerging next-generation IMS 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.