Press Release

RadiSys To Report Fourth Quarter 2009 Earnings And Host Conference Call On February 2, 2010

HILLSBORO, OR — Jan 15, 2010 — RadiSys® Corporation (NASDAQ:RSYS), a leading global provider of advanced embedded solutions, will announce results for the fourth quarter of 2009 at 4:05 p.m. ET on Tuesday, February 2, 2010. Following the release, Scott Grout, Chief Executive Officer and Brian Bronson, Chief Financial Officer, will host a conference call at 5:00 p.m. ET to discuss the Company's results, along with business highlights and the outlook.

To participate in the live conference call, dial (888) 333-0027 in the U.S. and Canada or (706) 634-4990 for all other countries and reference conference ID# 50769533. The live conference call will also be available via webcast on the RadiSys investor relations website at http://investor.radisys.com/.

A replay of the conference call will be available two hours after the call is complete until 11:59 p.m. ET on Tuesday, February 16, 2010. To access the replay, dial (800) 642-1687 in the U.S. and Canada or (706) 645-9291 for all other countries with conference ID# 50769533. A replay of the webcast will be available for an extended period of time on the RadiSys investor relations website at http://investor.radisys.com/.

For more information, contact:


About Radisys

RadiSys (NASDAQ: RSYS) is a leading provider of application-ready software and hardware platforms for use in the communications, multi-media, defense and medical markets. RadiSys’ innovative and market leading technologies help equipment manufacturers and network operators bring the most advanced products and services to market faster and more economically. For more information, visit http://www.radisys.com, write to info@radisys.com, or call 800-950-0044 or 503-615-1100. Editors seeking more information may contact Lyn Pangares at RadiSys Corporation at 503-615-1220 or lyn.pangares@radisys.com.