Radisys Announces Acquisition Of Pactolus Communications Software Corporation

Pactolus SIP applications software, together with Radisys Convedia Media Servers, strengthens Radisys’ ability to offer turnkey telecommunication solutions for service providers

HILLSBORO, OR — March 11, 2010 — Radisys® Corporation (NASDAQ: RSYS), a leading global provider of application–ready software and hardware platforms, today announced that it has acquired privately–held Pactolus Communications Software Company, a leader in the development and delivery of next–generation IP communication solutions for converged TDM/IP and SIP–enabled VoIP networks. Pactolus’ customizable turnkey SIPware™ services include large operator–assisted event and reservationless audio conferencing, prepaid/post–paid long distance services, residential/business Class 5 VoIP, and voice messaging. Pactolus’ software solutions are installed in over 45 telecommunication service provider customers worldwide including major Tier 1 and Tier 2 carriers.

“We are pleased to announce the acquisition of Pactolus,” said Scott Grout, Radisys President and CEO. “Radisys and Pactolus have been partnering for years in the delivery of media server technology and applications. The addition of Pactolus strengthens our portfolio of telecommunication solutions for service providers and TEMs. The Pactolus team has extensive domain expertise in developing both legacy TDM enhanced services and next generation IP–based communication applications and platforms. We look forward to having them as part of the Radisys team.”

About Radisys

Radisys (NASDAQ: RSYS) is a leading provider of embedded wireless infrastructure solutions for telecom, aerospace, defense and public safety applications. Radisys’ market-leading ATCA, IP Media Server and COM Express platforms coupled with world-renowned Trillium software, services and market expertise enable customers to bring high-value products and services to market faster with lower investment and risk. Radisys solutions are used in a wide variety of 3G & 4G / LTE mobile network applications including: Radio Access Networks (RAN) solutions from femtocells to picocells and macrocells, wireless core network applications, Deep Packet Inspection (DPI) and policy management; conferencing and media services including voice, video and data, as well as customized mobile network applications that support the aerospace, defense and public safety markets.

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