TollBridge Technologies Announces GR-303 Certificationfor Its TB200 With Nortel DMS Class 5...

Business Editors & High-Tech Writers

SANTA CLARA, Calif.--(BUSINESS WIRE)--March 13, 2000

TollBridge's TB200 Becomes First Broadband Local Exchange

Voice Gateway to Pass Interoperability Testing

TollBridge Technologies, the leading developer of high-quality voice-over-broadband

TollBridge's TB200 is the first carrier-grade, highly scalable, fully redundant broadband local exchange gateway to pass Nortel's GR-303 interoperability testing. The TB200 achieved documented compliance with Nortel's GR-303 based on its ability to perform according to specified criteria, including maintenance, functionality, performance and interoperability.

"With hundreds of millions of installed lines, Nortel DMS digital switching systems represent a major component of the installed base of switches worldwide. To provide high-reliability systems for voice over broadband, competitive carriers must have the assurance of complete interoperability between all necessary elements -- the TollBridge Local Exchange Gateway, the TB200, and their DMS switches," said Agnes Imregh, TollBridge's vice president of marketing.

"Under Nortel's testing regimen, the TB200 went through extensive test suites under conditions of high voice traffic and exceeded the minimum required call completion rate of 99.99 percent. It is this kind of assurance that enables carriers to make large-scale deployments of this technology."

About TollBridge Solutions

Designed to bypass Incumbent Local Exchange Carriers (ILECs) and deliver voice services over any broadband access technology, the TollBridge product set consists of three elements:

--   The TB50 Integrated Access Device (IAD) that converts voice
     samples from multiple calls into packets and prioritizes voice
     and data traffic for transmission over any broadband access
     network;

--   The TB200 a carrier-grade Local Exchange Gateway that translates
     packets back into voice and connects to Class 5 switches using
     the Bellcore GR-303 protocol and new, emerging protocols such as
     the Segment Interface protocol (SIP) and Media Gateway Control
     Point (MGCP);

--   The TollView(TM) Management Suite, a management system that
     includes a graphical Element Management System (EMS) for
     end-to-end configuration, troubleshooting, and performance
     management of up to 100 TB200 systems from HP OpenView(TM) on SUN
     Solaris(TM) platforms.

About TollBridge Technologies

Founded in March 1998 and located in Santa Clara, TollBridge Technologies is the leading provider of voice-over-broadband solutions to a new generation of carriers.

TollBridge solutions change the economics of delivering voice services by allowing carriers that own Class 5 switches to use broadband access technologies, such as DSL or cable, to bypass the Incumbent Local Exchange Carrier (ILEC) and deliver toll-quality voice and integrated data services.

For more information about TollBridge Technologies, visit the company's Website at www.tollbridgetech.com or contact Rich Farana at 408/585-6114.