Radisys Expands ATCA Portfolio with 10-Gigabit, Single Board Compute Blade

Radisys Corporation (NASDAQ: RSYS), a leading global provider of advanced embedded solutions, today announced the launch of the Promentum® ATCA-4310 10-Gigabit AdvancedTCA single-slot processor blade.

HILLSBORO, OR - January 29, 2008 - Radisys Corporation (NASDAQ: RSYS), a leading global provider of advanced embedded solutions, today announced the launch of the Promentum® ATCA-4310 10-Gigabit AdvancedTCA single-slot processor blade. This feature rich product is ideally suited for compute intensive applications where transaction and subscriber load can increase dramatically in short intervals, such as IP Multimedia Services (IMS), Internet Protocol Television (IPTV), and Wireless Control Plan based applications.

The ATCA-4310 is the newest member of the award winning Radisys Promentum SYS-6010 10-Gigabit ATCA Platform, and extends Radisys commitment to providing telecommunications equipment manufacturers (TEMs) a broad range of proven carrier grade, scalable platforms for next generation communication solutions. The convergence of voice, data, and infotainment services continue to drive processing performance and bandwidth requirements higher. With the ability to support redundant 10GbE fabric connectivity to on-board dual-core processors, the ATCA-4310 provides designers with increased bandwidth and great performance per watt, making it a cost-effective carrier-grade solution that can be leveraged across multiple applications.

"With today's converged technology driving more and more bandwidth-hungry applications, the need for 10-gigabit capability continues to build momentum in the marketplace," said Todd Etchieson, vice president of Communications Networking Product Management. "The Radisys ATCA strategy is to stay ahead of the curve and make sure we have the right 10-gigabit building blocks ready when they're needed, paving the way for equipment manufacturers to continually build more efficient products that can create new revenue streams and grow market share."

Additional highlights of the new Promentum ATCA-4310 10-Gigabit Compute Processing Module:

· Thermally efficient design supporting two low-voltage 2GHz Dual-Core Intel Xeon processors

· Flexible I/O and storage provisioning options with dual mid-size AdvancedMC sites, reduces I/O bottlenecks and frees up processor(s) to multi-task across other functions

· Network timing subsystem (NTS) provides added flexibility with support for WAN I/O AMCs

· Scalable memory sub-system with support for up to 16GB of DDR2-400 ECC SDRAM

· Dual 256MB on-board flash devices provide added design flexibility and redundancy support

The Promentum ATCA-4310 Compute Processing Module is shipping in production volume now.

About the Promentum Platform

The Radisys Promentum® ATCA (AdvancedTCA) family includes a fully integrated application ready platform and modular building blocks configured for multiple applications. The award winning SYS-6010 is the industry's first 10-Gigabit ATCA Application Ready Platform. It integrates state-of-the-art building blocks such as 10 GE switch and control module, dual-core compute module, SAS/FC storage modules, STM-1/OC-3, PDH and Gigabit line card modules and platform software including data path software to meet the next generation performance requirements for the target applications.

About Radisys

Radisys (NASDAQ: RSYS) is a leading provider of advanced solutions for the communications networking and commercial systems markets. Through intimate customer collaboration and combining innovative technologies and industry leading architecture, Radisys helps OEMs, systems integrators and solution providers bring better products to market faster and more economically. Radisys products include embedded boards, application enabling platforms and turn-key systems, which are used in today's complex computing, processing and network intensive applications. For more information, visit www.Radisys.com, write to info@Radisys.com, or call 800-950-0044 or 503-615-1100.