Atmel Embeds RADVISION(R) SIP In VoIP Chipsets; Chipsets Target VoIP Handsets for Enterprise, SOHO and Consumer Markets

FAIR LAWN, N.J.--(BUSINESS WIRE)--May 15, 2006--RADVISION (Nasdaq: RVSN), a leading provider of multimedia conferencing, communications platforms and development tools, today announced that U.S.-based Atmel(R) Corporation is licensing RADVISION's SIP toolkit to be used on Atmel's product line of wireless and wired Voice-over-IP (VoIP) processors.

The toolkit will be used to bring advanced VoIP capabilities to Atmel's VoIP processor devices that are targeted at embedded applications such as enterprise VoIP WiFi(TM) and wired phones and VoIP enabled home routers. Atmel's silicon products with RADVISION's SIP embedded will be used by tier 1 and tier 2 OEMs and original design manufacturers (ODM) that design and develop wireless VoIP handsets for the Enterprise, SOHO, Service Provider and consumer markets.

The use of the RADVISION SIP toolkit will enable Atmel to roll out products that have the high performance, stability and interoperability required for the business and home environments. The highly integrated architecture of Atmel's VoIP processors allows lower cost, lower power consumption and higher performance than other solutions in the market today.

"Atmel is a leader in the design and manufacture of advanced semiconductors that are optimized for use in the embedded VoIP device market with strict requirements for performance and long battery life consideration," said Adi Paz, Senior Director of Product Management and Marketing for RADVISION's Technology Business Unit. "Their choice of our award-winning and high performance SIP toolkit with minimal memory footprint is further validation of the success of our SIP products."

"The RADVISION SIP toolkit has provided Atmel and its customers the greatest assurance of worldwide interoperability with various call managers, SIP servers and hardware and software switches," said Richard Bisset, Product Marketing Director for Atmel's Multimedia and Communications Group. "We chose RADVISION's SIP toolkit because of its high interoperability with other products on the market and its high performance. This allows Atmel's solutions to overcome one of the big barriers that face many other solutions in the market place today. We were especially pleased with the fact that the toolkit provides all the necessary SIP and SDP services, such as encoding, sending, parsing and receiving SIP messages over UDP, TCP and TLS, managing SIP calls and transactions. We found the product easy to use and were able to integrate SIP into our VoIP processors in a surprisingly short amount of time. As such, we are very pleased with our decision to license Radvision's SIP software," concluded Mr. Bisset.

About Atmel

Atmel is a worldwide leader in the design and manufacture of microcontrollers, advanced logic, mixed-signal, nonvolatile memory and radio frequency (RF) components. Leveraging one of the industry's broadest intellectual property (IP) technology portfolios, Atmel is able to provide the electronics industry with complete system solutions. Focused on consumer, industrial, security, communications, computing and automotive markets, Atmel ICs can be found Everywhere You Are(R).

(C) 2006 Atmel Corporation. All Rights Reserved. Atmel(R), logo and combinations thereof, Everywhere You Are(R) and others, are registered trademarks, or trademarks of Atmel Corporation or its subsidiaries. Other terms and product names may be trademarks of others.

Information:

For further information on Atmel's Internet Applications and VoIP
products, go to
http://www.atmel.com/products/Internet/.

About RADVISION

RADVISION LTD. (Nasdaq: RVSN) is the industry's leading provider of high quality, scalable and easy-to-use products and technologies for videoconferencing, video telephony, and the development of converged voice, video and data over IP and 3G networks. For more information please visit our website at 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.