Radisys 40G ATCA Platform Receives INTERNET TELEPHONY Magazine’s Twelfth Annual Product of the Year Award

Promentum ATCA 4.0 Platform Recognized for Outstanding Innovation

HILLSBORO, Ore., February 18, 2010 – Radisys®; Corporation (NASDAQ: RSYS), a leading global provider of application-ready software and hardware platforms, today announced that Technology Marketing Corporation’s (TMC®) INTERNET TELEPHONY magazine has named its ATCA 4.0 platform as a recipient of the esteemed 2009 Product of the Year Award.

Radisys’ ATCA 4.0 platform is the industry’s first integrated 40G ATCA platform, designed to support the next–generation of high bandwidth 4G applications. The fully integrated platform features the latest technology in the industry, incorporating a 10GBASE–KR and 40GBASE–KR4 capable backplane and 40G switching capability. As Telecom Equipment Manufacturers (TEMs) focus on building next-generation network elements, including 4G and Broadband, the Radisys ATCA 4.0 platform will provide them with the next-generation switching, power and cooling that they require.

“INTERNET TELEPHONY is proud to grant Radisys a 2009 Product of the Year Award for its ATCA 4.0 platform. Radisys has proven its commitment to quality and excellence while addressing real needs in the marketplace,” said Rich Tehrani, CEO, TMC. “We’re happy to recognize and honor Radisys for its development of IP communications technology. We look forward to more innovative solutions from them in the future.”

The INTERNET TELEPHONY judging committee selected companies that demonstrate the vision, leadership and thoroughness associated with the Product of the Year awards.

“As the proven leader in ATCA system deployments, Radisys understands the time–to–market pressures that our TEM customers face for next–generation networks,” said Anthony Ambrose, vice president and general manager, communications networks, Radisys. “Our fourth–generation 40G platform demonstrates how Radisys anticipates customers’ future requirements so they may stay in front of the market.”

A complete list of Product of the Year winners is published in the February 2010 issue of INTERNET TELEPHONY magazine, (www.itmag.com). INTERNET TELEPHONY has been the authority in IP communication since 1998™.

For more information about TMC, please visit www.tmcnet.com.

About Radisys

Radisys (NASDAQ: RSYS), a global leader in open telecom solutions, enables service providers to drive disruption with new open architecture business models. Radisys’ innovative disaggregated and virtualized enabling technology solutions leverage open reference architectures and standards, combined with open software and hardware to power business transformation for the telecom industry, while its world-class services organization delivers systems integration expertise necessary to solve communications and content providers’ complex deployment challenges.

Radisys, Continuous Computing and Trillium are registered trademarks of Radisys Corporation.