Press Release

RadiSys to Report Second Quarter 2009 Earnings and Host Conference Call on July 28, 2009

HILLSBORO, OR — July 8, 2009 — RadiSys® Corporation (NASDAQ: RSYS), a leading global provider of advanced embedded solutions, will announce results for the second quarter of 2009 at 4:05 p.m. ET on Tuesday, July 28, 2009.  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# 19213480.  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, August 11, 2009. 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# 19213480.  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/ .