Partnership solidifies market-leading suite of signaling solutions

January 12, 2011, Rochester, NY and Frisco, TX – PT (NASDAQ: PTIX), a leading global provider of advanced network communications solutions, and GENBAND, the market share leader in IP voice solutions, today announced a multi-faceted development agreement to further advance each company’s signaling technology and solutions.

As part of the alliance, the two companies have entered into a long-term agreement under which PT will provide GENBAND with development, support and maintenance of signaling solutions as integral elements of GENBAND’s premier switching portfolio. In addition, PT has acquired specific signaling assets from GENBAND that include the Universal Signaling Point (USP) and SP2000 products and related intellectual property rights.

“Both GENBAND and PT are leaders in IP-based technology, and we welcome them as a strategic partner,” said John Slusser, President and CEO of PT. “GENBAND’s purchase of Nortel’s switching assets has preserved many years of respected research and development, which included significant advancements in signaling. Now we blend that with over thirty years of PT’s innovation and expertise. This partnership positions both companies to offer the greatest possible signaling value and performance to our carrier customers.”

“GENBAND is continuously focused on the future and forward-looking technology,” said Charlie Vogt, Chief Executive Officer of GENBAND. “This agreement allows GENBAND to partner with a market-leading specialist for future signaling development, while strengthening our focus on core switching and networking competencies. We look forward to working with PT to bring to market the most efficient IP enabled signaling solutions for use across legacy and next generation networks.”

Under the agreement, PT will provide solutions for stand-alone signaling applications as well as integrated signaling capabilities for GENBAND’s market-leading C20 softswitch deployed on the GENBAND GENiUS platform.

About GENBAND (www.genband.com)

GENBAND is a global leader of IP infrastructure and application solutions, enabling fixed, mobile and cable service providers around the world to evolve communications networks through IP innovation. The Company offers market-leading Switching, Applications, Networking and Service solutions, with products deployed in over 600 customer networks spanning more than 80 countries. GENBAND is headquartered in Frisco, Texas, and has operations in 50 countries. To learn more, visit us on the web at www.genband.com.

About PT (www.pt.com)

PT (NASDAQ: PTIX) is a global supplier of advanced network communications solutions to carrier, government, and OEM markets. PT’s portfolio includes IP-centric network elements and applications designed for high availability, scalability, and long life cycle deployments. The company’s entire line of offerings is anchored by IPnexus, PT’s own IP-native, highly integrated platforms and element management systems. OEMs and application developers, including PT itself, leverage the robust carrier grade Linux development environment and rich suite of communications protocols (PT’s NexusWare) of IPnexus Application-Ready Systems as a cornerstone component of their end product value proposition. PT’s SEGway Signaling Solutions provide low cost, high density signaling, advanced routing, IP migration, gateway capabilities, SIP bridge, and core-to-edge distributed intelligence. The company’s Xpress NGN applications enable evolving Mobile 2.0, Multi-media, and IMS based revenue generating services. PT is headquartered in Rochester, NY and maintains sales and engineering offices around the world.

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