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Achieves Nortel "Compatible Product" Status

Gaithersburg, MD, September 12, 2005 - BroadSoft, the leading provider of VoIP application software, announced today that the BroadSoft®BroadWorks® VoIP application platform was awarded a Certificate of Compatibility from Nortel. BroadWorks Release 11.1 and 12.0, was awarded this certificate after completing laboratory SIP interoperability testing with Nortel's Communication Server (CS) 2000 (software release SN07 and SN08) and will now carry the Nortel Compatible Product designation.

BroadWorks provides a comprehensive range of advanced applications, including hosted PBX, IP Centrex, mobile PBX, business trunking and residential broadband services fully integrated into a single VoIP application platform. BroadWorks is uniquely capable of providing these applications with the reliability, redundancy, scalability and regulatory capabilities required to deliver carrier-class service.

"Nortel's rigorous interoperability testing in its state-of-the-art laboratory facilities provides their customers a crucial time-to-market advantage by simplifying the deployment of revenue-generating VoIP applications, like hosted PBX services," said Rober Weidenfeller, vice president of engineering at BroadSoft. "We look forward to working with Nortel to reach more customers and provide this compatible solution."

About BroadSoft

BroadSoft's VoIP application software is revolutionizing the delivery of hosted telephony and multimedia services. Its flagship BroadWorks® technology empowers wireless and wireline carriers to deliver next-generation voice and multimedia applications and advanced features that increase revenue, enhance competitive differentiation and elevate customer satisfaction. BroadSoft's family of carrier-class software products delivers the scale, open architecture and reliability that the world's leading telecommunications companies demand to serve mission-critical enterprise and residential broadband customers. BroadSoft's customer base of 110 network operators, including BellSouth, MCI, Singtel, Telstra, Verizon and XO Communications leads the industry with more than 1,200,000 lines deployed. Additional information is available at www.broadsoft.com.

About BroadSoft:

BroadSoft, now a part of Cisco, is a technology innovator in cloud PBX, unified communications, team collaboration, and contact center solutions for businesses and service providers across 80 countries. We aim to empower users and teams to share ideas and work simply to achieve breakthrough performance. For additional information, visit www.BroadSoft.com.

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