Adaptive Broadband and AcuComm Conducting Live Demonstration of Multiple Dwelling Unit Application During ISPCON Show.

Business Editors/High-Tech Writers

ISPCON Spring 2001

Booth No. 3414

SUNNYVALE, Calif.--(BUSINESS WIRE)--April 6, 2001

AB-Access(TM) Subscriber Unit Provides Wireless Last Mile Access

for Broadband Connection to Multiple Users

Adaptive Broadband(TM) Corporation (Nasdaq:ADAP) and AcuComm are conducting a live demonstration of the AB-Access/AcuComm Multi-Tenant Unit (MTU) solution. This demonstration features the AB-Access subscriber unit (SU) being used in conjunction with the AcuComm iPOP(TM) to provide high-speed Internet access in an MTU environment. This successful demonstration has been ongoing this week in AcuComm's booth No. 3414 at the ISPCON Spring trade show in Baltimore, Md.

Adaptive Broadband Pursues Multiple Dwelling Market Segment

Adaptive Broadband indicated in its February 22, 2001, strategy press release that applications were driving the need for broadband access and that its market segmentation strategy would be driven accordingly. The company said at that time that it would expand into market segments that could benefit from the simultaneous, multiple applications offered by AB-Access, such as MTUs, which spread network costs over multiple users. The collaboration with AcuComm at the ISPCON show is one step in implementing this strategy.

AcuComm Serves Business, Hospitality and Residential Market

Segments

AcuComm's iPOP access concentrator platform distributes a broadband connection throughout an MTU or MDU (multi-dwelling unit) complex via existing in-building telephone wiring. Employing SDSL and RADSL technologies, business, hospitality, hotel, and residential market segments are effectively served.

As with any DSL system, an AcuComm network consists of a central DSL controller and remote access points. The iDAC platform serves as the concentrator. With six hot-swappable plug-in slots, the iDAC can support both ADSL and SDSL simultaneously and can be upgraded without taking customers off-line. iRacer access points sit at the customer premise providing high-speed access to the end user.

Deployed in conjunction with AB-Access equipment, the iPOP platform provides an end-to-end solution for carriers serving the MTU/MDU space. In this scenario, the AB-Access SU provides QoS wireless backhaul to an iDAC, which in turn distributes DSL broadband among multiple users, using existing copper telephone wires.

The benefits of such an architecture are:

-- Leverages the capabilities of the SU over customers who do not each require
a 25 Mbps connection, but desire at least DSL speed

-- Leverages the cost of the SU over multiple users

-- Uses the iDAC to provide QoS guarantees and differentiated service offerings
among users

-- Incrementally scales the SU to service multiple users within a building.

Value Added Reseller Tessco Distributes Both AB-Access and AcuComm

Solutions

Resold through Tessco, the value of the AcuComm solution is strong. Including the AB-Access equipment, a complete solution can be provided to both small and large customers. Tessco has the partners needed to meet bundled and applications-based requirements and has introduced AB-Access to 203 system integrators, dealers and other VARs authorized to sell the company's product. Tessco also will be featuring AB-Access in the Tessco booth No. 2025 during the ISPCON trade show April 4-6 in Baltimore.

About AcuComm

AcuComm is a privately held California company headquartered in Sunnyvale, Calif., USA, in the heart of Silicon Valley. Incorporate in July of 1997, it is a leading developer and manufacturer of broadband Internet access systems and equipment used in the Multi-Tenant Unit (MTU) marketplace. The MTU marketplace includes tenants located in commercial offices, hotels, industrial parks, campus environments, and residential facilities -- such as condominiums and apartment complexes. AcuComm's intelligent products provide high-speed Internet access and data to tenants through the existing copper telephone wires in buildings using DSL (Digital Subscriber Line) technology. DSL enables tenants to receive fast, reliable, "always-on" high-speed transports, as well as multi-channel video for streaming video and video-on-demand applications. AcuComm's feature-rich iPOP(TM) (intelligent Point of Presence) xDSL product line includes the iDAC Controller and the iRACER Access Point projects that have been certified for use by NTT of Japan and have achieved worldwide compliance. For more information, please visit AcuComm on the Web: www.acucomm.com or call 408/567-9968.

About Adaptive Broadband

Adaptive Broadband (www.adaptivebroadband.com) is a data networking solutions company that is developing leading-edge technology for the deployment of broadband wireless communication over the Internet. Its AB-Access(TM) fixed wireless broadband platform bridges the last mile, currently replacing the local loop for corporate and small business subscribers and migrating to the residential market. Combining a leading packet-on-demand technology and time division duplexing, it offers data transmission at rates up to 25 Mbps -- providing the capability for voice, real-time video conferencing, transmission of full streaming video, web surfing, and transmission of data files -- all simultaneously and over one connection.

Safe Harbor Statement under the Private Securities Litigation

Reform Act of 1995

This press release includes forward-looking statements within the meaning of the Securities Exchange Act of 1934, such as Adaptive Broadband's potential success in the residential market. All forward-looking statements are based on current information, and Adaptive Broadband assumes no obligation to update such statements. Forward-looking statements involve risks and uncertainties, and actual events or results may differ materially from those suggested by a forward-looking statement. Factors which could cause actual events or results to differ materially include, but are not limited to, fluctuations in quarterly results, delays in receipt of orders or in the shipment of products, delays in the recovery of data communications and Internet markets and delays in product cost reductions. These and other risks are set forth in Adaptive Broadband's filings with the Securities and Exchange Commission, such as the most recent reports on Form 10-Q and Form 10-K.

Note to Editors: Adaptive Broadband(TM) and AB-Access(TM) are registered trademarks of Adaptive Broadband Corporation iPOP(TM) is a registered trademark of AcuComm.