GENBAND and PT Create Signaling Development Alliance

Partnership solidifies market-leading suite of signaling solutions

ROCHESTER, New York and FRISCO, Texas, January 12, 2011 - 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(TM) softswitch deployed on the GENBAND GENiUS(TM)
platform.

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(R), 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(R) development
environment and rich suite of communications protocols (PT's NexusWare(R)) of
IPnexus Application-Ready Systems as a cornerstone component of their end
product value proposition. PT's SEGway(TM) 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(TM) 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.

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.

The names of actual companies, products, or services may be the
trademarks, registered trademarks, or service marks of their respective
owners in the United States and/or other countries.

Patt Rice, Senior Vice President Sales and Marketing, PT, +1-585-784-7200, Patt.rice at pt.com; Kim Lee, GENBAND, +1-972-265-3766, kim.lee at genband.com