Plano, TX, May 13, 2009 - GENBAND Inc., a market-leading developer of next-generation IP infrastructure solutions, and PAETEC Holding Corp. (NASDAQ GS: PAET), which provides data, voice and Internet services to business-class customers nationwide, today announced the deployment of a GENBAND trunking solution based on G9™ Converged Gateways in PAETEC’s San Francisco Bay Area market rollout.

“GENBAND has been a long-term strategic partner in supporting our network growth and helping us move traffic from legacy switching infrastructure to next generation IP,” said Sanjay Hiranandani, Senior Vice President of Engineering at PAETEC. “The Bay Area rollout represents our most recent market expansion and we value GENBAND’s ability to support our existing services and enable new applications with Advanced Routing and Transcoding capabilities. The GENBAND solution significantly reduces the footprint, operating costs, and capital investment required to support our existing voice infrastructure which includes both traditional TDM and enhanced IP based services. The GENBAND solution, combined with our world class IP based data infrastructure enables us to deliver our broad suite of services in our expanded nationwide footprint which includes the new markets San Francisco, Oakland, San Jose and Sacramento.”

“Having supported PAETEC’s previous 19 market rollouts as an overlay to their legacy Class 5 infrastructure, we’re pleased to provide a single integrated solution for this distributed and highly scalable IP architecture in the Bay Area that seamlessly interoperates with PAETEC’s application server,” said Charlie Vogt, President and CEO of GENBAND.  “PAETEC is a true pioneer in the delivery of premier alternatives for business communications. Whether providing unified communications or hosted and managed services, PAETEC’s personalized enterprise platform resonates.”

GENBAND’s G9 Converged Gateway is a high-density, carrier class trunking, access and signaling gateway that is purpose-built for use in mobile, fixed line and converged operators’ packet and circuit-switched networks. The G9’s flexible 28-slot chassis provides a low power, efficient card design that is simple to maintain and operate, allowing operators to easily add ports and IP session capacity as well as incremental features. The platform’s many integrated features and functions help to reduce service provider costs by limiting the number of new elements in the network. Support for both mobile and fixed codecs, protocols and interfaces allow the G9 to be the key network element in next generation solutions.

When coupled with GENBAND’s C3™ platform, the solution offers full featured, advanced routing and control functions with an extensive set of subscriber and tandem/transit services. The GENBAND solution provides an industry-leading, distributed next generation solution for fixed and mobile network operators.

About PAETEC
PAETEC (NASDAQ GS: PAET) is personalizing communications for business-class customers across the United States. We offer a comprehensive suite of data, voice, and IP services, as well as enterprise communications management software, network security solutions, CPE, and managed services. For more information, visit www.paetec.com.

About GENBAND
GENBAND is a global leader and innovator of next generation IP media, session border and fixed mobile convergence security solutions deployed in over half of the world’s 100 largest service providers. These high-performance gateway solutions are at the core of fixed and mobile networks around the world - evolving, securing and enhancing communications networks. Headquartered in Plano, Texas, GENBAND has Centers of Excellence in Brazil, China, Maryland, Massachusetts and Texas, and serves customers and partners in more than 80 countries. Additional information is available at www.genband.com.

Contacts:
Kim Lee            
GENBAND Inc.        
+1.972.265.3766       
kim.lee@genband.com    

Frank Puglia
GENBAND Inc.
+1.972.265.3612
frank.puglia@genband.com