Sonus Wins Telio

CHELMSFORD, Mass. -- Sonus Networks, Inc.(Nasdaq: SONS), a leading supplier of service provider Voice over IP (VoIP)infrastructure solutions, announced today that Telio, the largest and fastestgrowing access independent VoIP provider in Europe, has selected Sonus'industry-leading IP Multimedia Subsystem (IMS)-ready solutions as thefoundation for its next generation IP-based voice network. Telio, which offersprimary line residential services throughout Europe, selected Sonus because ofits ability to meet European-specific signaling requirements and to supportcarrier-grade reliability and scalability for Telio's plug-and-play IP-basedvoice service, which currently carries more than 100 million minutes of voicetraffic per month.

"To encourage the adoption of IP-based voice services, it is imperativethat consumers experience the same quality, reliability, and ease of use thatthey're accustomed to with legacy voice offerings," said Alan Duric,co-founder and CTO, Telio. "Telio's service is a straightforward plug-and-playsolution. By selecting Sonus as the foundation for the network, we're able todeliver the level of service that our customers expect, introduce interestingnew features and applications, and scale as the demand for our servicecontinues to grow across Europe."

Telio offers IP-based voice service in Norway under the Telio brand, aswell as offering its Telio Voice Production System (TVPS) service on a whitelabel basis for European ISPs. Telio has deployed a suite of Sonus solutionsincluding the GSX9000(TM) and GSX4000(TM) Open Service Switches, PSX(TM) CallRouting Server, SGX(TM) Signaling Gateway, and the Sonus Network Border Switchfor enhanced security and direct IP-to-IP peering. With a full suite ofIMS-ready solutions in place, Telio's network can scale seamlessly,introducing new applications and features quickly and efficiently.

Sonus Networks Inc. (Nasdaq: SONS)