Press Release


BroadSoft Platform Deployed by Broadwing Communications to Serve Large Enterprise Customers' VoIP, Integrated Access and Next-Generation Application Needs

Broadwing Selects BroadWorks for its Carrier-Class Scalability,
Advanced Features and Ease of Integration

SUPERCOMM 2005 - June 6, 2005 - BroadSoft® Inc., the leading provider of VoIP application software, today announced that Broadwing Communications, LLC has deployed BroadSoft's BroadWorks® platform. Broadwing is using BroadSoft's technology as a key component of its innovative network, delivering nationwide VoIP services designed to meet the needs of multi-site enterprises.

Broadwing selected BroadWorks because of its integrated and open-standards based architecture, carrier-class reliability and extensive feature set. This unique combination of benefits allows the company to easily introduce new, next-generation features to its customer base.

"BroadSoft's technology provided a single, carrier-class platform that best met our present and future needs," said Mark Pugerude, senior vice president, marketing and business development for Broadwing. "With BroadWorks, Broadwing is strongly positioned to offer seamless migration to VoIP and unprecedented communications capabilities to our business customers."

The launch of Broadwing's VoIP Integrated Access services (see today's related release: Broadwing Communications Launches Nationwide VoIP Service for Large Multi-site Enterprises) represents the company's initial operational deployment of BroadWorks.

Broadwing's new VoIP Integrated Access services facilitate multi-site interworking by interfacing directly with an enterprise's existing equipment to support VoIP communications. For many large enterprises, unifying VoIP features across branch offices employing a mixture of communications systems has been an economic impediment.

By enabling enterprises to complement and integrate on-site PBX features with advanced hosted VoIP and multimedia features, Broadwing is uniquely positioned to meet the needs of multi-location enterprises. This capability also can dramatically reduce enterprise customer Wide-Area Network (WAN) communications costs.

Broadwing customers are able to implement VoIP solutions using direct WAN connections among on-premises PBX systems via the Session Initiation Protocol (SIP) capabilities of the BroadWorks platform. This further reduces the customer's total cost of ownership by eliminating the need to deploy expensive gateways to the public switched telephone network (PSTN) at each enterprise location site.

"Broadwing is recognized as one of the nation's most aggressive carriers with a reputation for harnessing advanced technologies to deliver state of the art services to its customers," said Mike Tessler, president and CEO of BroadSoft. "Broadwing and BroadSoft are accelerating the business community's ability to enjoy the savings, productivity enhancements and advanced capabilities inherent to VoIP communications."

ABOUT BROADWORKS
BroadSoft's BroadWorks VoIP application platform 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.

ABOUT BROADWING CORPORATION
Broadwing Corporation (NASDAQ:BWNG), through its consolidated subsidiary Broadwing Communications, LLC, (Broadwing) delivers innovative data, voice, and media solutions to enterprises, service providers, and government entities. Enabled by its one-of-a-kind, all-optical network and award-winning products and services, Broadwing Communications provides communications solutions with unparalleled customer focus and speed. Broadwing Corporation, via its Corvis Equipment Corporation subsidiary, also provides government agencies and service providers with advanced, scalable optical networking equipment designed to reduce the overall cost associated with building and operating optical networks. For more information, visit www.broadwing.com .

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 more than 100 network operators, including BellSouth, MCI, Singtel, Telstra and XO Communications, leads the industry with more than 900,000 lines deployed. Additional information is available at www.broadsoft.com .

Broadwing Note Regarding Forward-Looking Statements

Statements in this press release regarding Broadwing Corporation and/or Broadwing Communications, LLC (collectively "Broadwing"), that are not statements of historical fact may include forward-looking statements, and statements regarding Broadwing's beliefs, plans, expectations or intentions regarding the future are forward-looking statements, within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. All such forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Broadwing's actual results could differ materially from these statements.

BroadSoft and BroadWorks are registered trademarks of BroadSoft, Inc. All other names are trademarks of their respective companies. Broadwing and its logo are trademarks and/or service marks of Broadwing Communications, LLC, and/or Broadwing Corporation. All trademarks and service marks not belonging to Broadwing are the property of their respective owners.

For further information contact:

Calysto Communications for BroadSoft
Nancy Bistritz
+1 (404) 266-2060 ext.15
nbistritz@calysto.com

BroadSoft
Hilary Tomasson
+1 (240) 364-5147
htomasson@broadsoft.com

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