Media Quality Analysis to Enhance ProLab Testing Suite for Next Generation Network Operators, Service Providers and User Equipment Vendors

Tel Aviv (March 17, 2008) –

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 worldwide availability of its ProLab(TM) Video Quality Test Solution.

The ProLab Video Quality Solution is part of RADVISION’s ProLab Test Management Suite, providing IMS, SIP, H.323 and 3G-324M testing in a single, easy-to-use product. ProLab Testing Suite is designed to play a critical and vital role in the product development and quality assurance cycles, helping equipment vendors and service providers to develop high-end video telephony services. The Suite evaluates both video and IP telephony service performance at the same time.

“Since video quality is an important parameter in measuring the reliability of a network and the readiness of the video service, it is very important to constantly examine network conditions to ensure reliability and quality of service,” said Elie Cohen, Product Manager in RADVISION’s Technology Business Unit.

“Every comprehensive network check should include reliable software that automatically and objectively checks video quality online,” added Cohen.

ProLab Video Quality Online No-Reference-Based is the first complete testing solution for measuring emerging IMS and Video Quality, performing protocol, media and quality analysis. The solution combines ITU-T G.1070 methodologies for Objective Video Quality with the in-depth results obtained from RADVISION’s extensive Human Vision video quality experiments based on subjective methodologies laid out in ITU-R BT.500-9.
The ProLab Video Quality Testing Solution offers users unique insight into video quality experience. “Combining the human vision Subjective results with those obtained using ITU-T G.1070’s objective input enables us to ensure we can deliver the optimum video quality for every operational scenario,” Cohen said. ProLab can also be used to perform Service Level testing and to enhance development speeds, leveraging an extensive library of media types to emulate virtually any end device. Designed for ease of use ProLab supports the following environments 3G-324M, IMS, SIP and H.323.

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. For more information about RADVISION, visit http://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.

Source: RADVISION