Sonus Networks Partners with 3Way Networks to Offer Complete System Solution for Low Powered GSM Offering

WESTFORD, Mass. and BARCELONA, Spain, 14th February 2007 -- Sonus Networks, Inc. (Nasdaq: SONS), a leading supplier of service provider Voice over IP (VoIP) infrastructure solutions, announced today at the 3GSM World Congress in Barcelona, Spain that it has partnered with 3Way Networks to develop solutions to deliver voice services and multimedia applications to mobile handsets over an end-to-end low powered GSM network. 3Way Networks will provide femto cells, which enable existing and future 2G and 3G handsets to integrate with Sonus’ IP Multimedia Subsystem (IMS)-based network infrastructure. Together, the two companies are working to provide network operators with a complete Low Powered GSM (LP GSM) solution that provides new levels of operational efficiency with robust support for the delivery of next generation voice and multimedia services.

“As this new market for LP GSM solutions starts to take shape, Sonus is actively looking to leverage relationships with leading providers of cutting edge technology, such as 3Way networks, to help our customers stay ahead of the innovation curve,� said Steve Edwards, chief marketing officer, Sonus Networks. “By integrating solutions from companies like 3Way Networks, we are helping our customers seize the opportunity created by the release of LP GSM spectrum to improve their core business models and provide seamless fixed-mobile converged services to the end user.�“The march towards fixed mobile convergence (FMC) is beginning to gain pace in Europe,� said Simon Albury, MD, 3Way Network. “LP GSM via femto cells offers mobile operators a unique means of offering converged services that work with existing 3G handsets, eliminating the need to deploy expensive dual-mode technologies. We are very pleased to be working with Sonus to promote and encourage adoption of LP GSM solutions and believe the partnership will help to raise awareness of the value of this type of FMC technology.�

Additional information regarding Sonus’ recently announced strategy for delivering on the promise of LP GSM can be found in the press release issued February 13, 2007. Sonus will be exhibiting its industry leading solutions at the 3GSM World Congress, one of the wireless industry’s largest tradeshows, at Booth D46, Hall 2, Level 1. Additional information on the 3GSM World Congress can be found at www.3gsmworldcongress.com

About Sonus Networks

Sonus Networks, Inc. is a leading provider of voice over IP (VoIP) infrastructure solutions for wireline and wireless service providers. With its comprehensive IP Multimedia Subsystem (IMS) solution, Sonus addresses the full range of carrier applications, including residential and business voice services, wireless voice and multimedia, trunking and tandem switching, carrier interconnection and enhanced services. Sonus' voice infrastructure solutions are deployed in service provider networks worldwide. Founded in 1997, Sonus is headquartered in Westford, Massachusetts. Additional information on Sonus is available at www.sonusnet.com

About 3Way Networks

3Way Networks was founded in 2004 and has been shipping UMTS picocell and femto cell products since 2005. Last year the company shipped over $2m worth of equipment and the company is expecting a four fold increase in sales this year.

Source: 3Way Networks