ArrayComm Technology Enables Japan-based Carrier to Deliver 3G Data Speeds on 2G Network.

Business Editors/High-Tech Writers

SAN JOSE, Calif.--(BUSINESS WIRE)--March 27, 2002

IntelliCell smart antenna technology provides cost-effective,

spectrum-efficient solution to DDI-Pocket's new 128 kbps service

ArrayComm, Inc.'s IntelliCell(R) technology plays a critical role in the new 128 kbps data service that DDI-Pocket, Inc. of Japan launched yesterday on its Personal Handyphone System (PHS) network. By leveraging IntelliCell technology, currently deployed in Kyocera Corp.'s base stations, DDI-Pocket's three million subscribers can access the Internet from handheld cellular phones or PCMCIA cards at data speeds up to 128 kbps. DDI-Pocket can now offer data rates close to the 144-kbps and up, data speeds promised for 3G mobile networks, yet the new service is being deployed on a proven 2G network at far lower cost.

IntelliCell "smart antenna" technology is a key enabler for DDI-Pocket to double its current network speeds, while maintaining the system's subscriber capacity and network coverage. Since IntelliCell technology delivers up to eight-times higher capacity to each base station, DDI-Pocket can offer subscribers the new, faster mobile data service at a price-point on par with current rates. The 128 kbps service, among the highest data speeds of any commercial service worldwide, will be available in areas where DDI-Pocket's PHS data service is currently offered for approximately $70 per month with unlimited usage.

"We are proud to be the first company in Japan -- and one of the few companies in the world -- to offer 128 kbps mobile data services to our customers," said Yoshiki Chika, general manager of the engineering planning department at DDI-Pocket. "ArrayComm's IntelliCell technology, and the dramatic gains in system capacity it delivers, is one of the critical components to our success. We expect established and new subscribers to embrace this faster access to their data, and we also expect to grow our revenues through the strategic technology investments we've made."

"DDI-Pocket understands its customers and their need to get their data from anywhere, yet it doesn't want to compromise its voice services," said Sam Endy, executive vice president and general manager of operations at ArrayComm. "ArrayComm helps network operators deliver better voice and data quality while increasing network capacity. Not only does that help the bottom line for traditional voice services, it opens up new areas of revenue growth on existing networks. DDI-Pocket's 128 kbps service is a terrific example of a mobile data solution that is unheard of in many regions, notably the United States, becoming affordable and widespread with the help of smart antenna technology."

Network operators throughout the Pacific Rim, including Japan, China and Taiwan, have proven that base stations incorporating IntelliCell technology are both cost-effective and spectrum-efficient for network operators and subscribers. DDI-Pocket is the largest customer of Kyocera-manufactured base stations incorporating IntelliCell technology in Japan.

Traditional cellular systems broadcast to many users. With IntelliCell technology, a "personal cell" is created for one user, follows that user while he or she communicates, and is dismantled when the user is finished. These personal cells reduce interference, allow for wider coverage, improve capacity, reduce costs and create clearer signals.

About IntelliCell

For network operators, ArrayComm's "personal cell" approach reduces the number of base station deployments by up to half and capital outlay by a quarter -- an enormous economic advantage. An IntelliCell-enabled network can deliver eight times the capacity of a conventional system or twice the coverage area. In addition, integrating IntelliCell technology in base stations reduces transmit power throughout the network, reducing radio interference.

IntelliCell technology is a software solution that is licensed to base station manufacturers for integration at the baseband level with off-the-shelf hardware components. Once deployed, base stations incorporating IntelliCell technology can achieve greater performance enhancements through subsequent software upgrades that ArrayComm develops with its manufacturing partners. IntelliCell technology is fully compliant with PHS, W-CDMA, GSM and CDMA standards and requires no change at the terminals or in the base station-to-network interface. It can be integrated with any wireless air interface, including next-generation wide-area networks and wireless LANs.

About ArrayComm

ArrayComm, Inc. is the world leader in smart antenna technology. ArrayComm's patented IntelliCell(R) technology -- based on fully adapted smart antennas -- creates dedicated personal cells of voice or data for wireless subscribers. ArrayComm licenses IntelliCell technology to manufacturers and improves the cost, coverage and capacity of any personal communications system. It is installed in more than 100,000 IntelliCell-equipped base stations worldwide, capable of serving more than 10 million people. IntelliCell technology is also the key ingredient behind ArrayComm's innovative i-BURST(TM) system -- the only wireless Internet access system that offers the freedom of mobility with the high speed of DSL at consumer pricing. ArrayComm was founded in 1992, and wireless industry pioneer Martin Cooper is chairman and CEO. The company has more than 200 patents issued or pending worldwide. For more information, please visit www.arraycomm.com.

ArrayComm and IntelliCell(R) are registered trademarks, and i-BURST(TM) is a trademark of ArrayComm, Inc. Other names are registered trademarks or trademarks of their respective holders.