Austin, Texas, August 27, 2003 – General Bandwidth, a leading telecommunications equipment provider enabling carriers to deliver enhanced voice services over broadband networks, and Sylantro, the leading provider of Hosted PBX and IP Centrex platforms and applications, have begun certification testing to provide a wide range of PBX-type services and other exciting new features , giving carriers a robust, scalable platform from which to host IP Centrex services to a wide array of customers.

“We are excited about our relationship with Sylantro to deliver revenue-generating IP services through the G6 platform,” said Brendon Mills, CEO of General Bandwidth. “Through our work with Sylantro to deliver an integrated IP services platform, carriers will have a very compelling platform to win-back lost enterprise customers and provide IP Centrex on a broad scale to mass market customers.”

“The G6 platform provides carrier-grade performance and reliability for delivery of broadband-based hosted telephony services to the last mile, which complements Sylantro's award-winning, telco-class applications server and rich applications set,” said Jack Sorci, vice president of business development for Sylantro. “Through our work with General Bandwidth, service providers will have a proven, compatible option for their hosted PBX and IP Centrex deployments.”

Sylantro's IP Centrex feature set allows service providers to offer a wide range of high value PBX replacement services, providing new revenues beyond simple access and transport. A rich suite of applications and development tools allows service providers to quickly and efficiently roll out new, differentiated services. Branding, administration and back-office functions can be defined at the service provider, VAR/dealer, and/or at the customer level, allowing the widest possible flexibility. Sylantro's application feature server is massively scalable to support millions of subscribers on localized or distributed networks and delivers telco-grade reliability.

With 10 to 140 T1 ports per chassis, General Bandwidth's G6 platform is fully optimized for mass deployments of hosted communications. Built for large carrier environments, the G6 platform offers 99.999% availability and meets or exceeds the most stringent requirements for central office environments, including NEBS Level 3 certification, as well as passing all ILEC extended NEBS certification tests. With the G6 platform, carriers can deploy IP Centrex with full confidence in the network platform.

About General Bandwidth

General Bandwidth's flagship G6 ® Packet Telephony Migration platform is currently in live service within major U.S. ILECs, as well as many other carriers, a testament to its scalability and carrier grade design. The G6 platform enables service providers to cost-effectively deliver voice services over their existing broadband infrastructure and provide a migration path to end-to-end packet networks. www.genband.com

About Sylantro Systems Corp.

Sylantro Systems provides the premier software platform for advanced Hosted PBX and IP Centrex services. The company leads the market in deployments, with more than 15 incumbent carriers, PTTs and next-generation service providers using the Sylantro platform directly or through Sylantro's indirect model. With a unique combination of advanced applications, a carrier-class platform, and proven go-to-market services, Sylantro allows service providers to rapidly deliver high-value, high-margin managed telephony services. These award-winning solutions offer end-users sophisticated business communications without the cost and complexity of today's in-house PBX and key systems. Sylantro is a privately held company backed by premier investors. On the Web: www.sylantro.com

Contacts:
General Bandwidth
Tabitha Bailey
+1.805.241.2532
Tabitha.Bailey@genband.com

Trademark notes : G6 and General Bandwidth are registered trademarks of General Bandwidth Inc.