Adaptive Broadband Demonstrates Voice and Data Point-to-Multi Point Wireless IP Transmission.

SUNNYVALE, Calif.--(BUSINESS WIRE)--Sept. 9, 1999--

With AB-Access(TM), Carriers Can Now Bundle Voice And Data Over The

Internet

ADAPTIVE BROADBAND CORPORATION (Nasdaq National Market: ADAP) announced today it has successfully demonstrated wireless transmission involving simultaneous, point-to-multipoint voice and data traffic using Internet Protocol (IP). The test involved Adaptive Broadband's AB-Access(TM) wireless broadband service product, in conjunction with Cisco Systems' off-the-shelf Voice Internet Protocol (VoIP) equipment. No additional product development was needed for the demonstration, which was conducted jointly with the Information & Telecommunication Technology Center. The center conducts IT research at the University of Kansas in Lawrence, Kan.

Bundled Voice and Data

"This demonstration shows how voice and data can be effectively bundled over the Internet," said Dr. Daniel Scharre, chief technology officer for Adaptive Broadband. "For users, it means they can enjoy realtime voice service over their Internet connection while simultaneously Web browsing, downloading files, or sending data over that same connection. For carriers, it opens a whole new world of service bundling in the markets for Internet access and local telephone voice service. And all this can be done while maintaining appropriate quality of service for both realtime and non-realtime services."

In the demonstration, live voice traffic was transmitted over IP, while data traffic, averaging about 8 Mbps, was simultaneously transmitted over the same connection. Cisco 3620 routers were used at either end of the link to provide the VoIP gateway functionality. The transmission covered a distance of approximately 2.4 kilometers between the subscriber unit and the base station. The voice call connected to the Public Switched Telephone Network (PSTN) on the network side, and ultimately terminated in Sunnyvale, California. "This demonstration confirms that the technology to provide integrated services over wireless now exists, " said Prof. Joseph B. Evans, Director of the Networking & Distributed Systems Laboratory at ITTC.

Wireless Technology Offers Immediate Deployment

"The technology to integrate voice and data over IP will redefine the landscape for local telephone service," said Frederick D. Lawrence, chairman and chief executive officer for Adaptive Broadband. "And it further underscores that broadband wireless technology will drive change faster than wired solutions. The technology is available now, and can be deployed at a fraction of the cost of infrastructure build-out with wired broadband solutions such as cable modems and xDSL."

AB-Access was introduced earlier this year for ultra high speed Internet access. It offers data transmission at rates up to 25 Mbps, a speed up to 400 times faster than dial-up service with a 56K modem. Initial product offerings are in both licensed (MMDS) and unlicensed (U-NII) bands, to support the varying needs of different types of service providers. Future product releases at several frequency bands between 2 and 42 GHz are planned, made possible because of the frequency-independent, platform architecture of the product. Service providers in Florida and Texas are currently introducing commercial applications for data transport.

Adaptive Broadband (http://www.adaptivebroadband.com) is a wireless data networking solutions company - a leading provider of terrestrial wireless and satellite-based systems to support ultra high speed Internet access, broadcast digital TV transport and worldwide Internet backbones. The company also provides industry-leading solutions for satellite-based data communications and terrestrial wireless telemetry networks.