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April 13, 1999

GSM Alliance Reaffirms Position on Third Generation Wireless Standards

CHICAGO, IL, April 12, 1999 - The North American GSM Alliance, LLC today reaffirmed its position supporting a multiple technologies solution for determining radio air-interface specifications for third generation (3G) wireless systems.

"As wireless operators from around the world gather this week in Tokyo to discuss specific 3G specifications, we reiterate the importance of multiple technology modes," said Don Warkentin, Chairman of the North American GSM Alliance, and President and Chief Executive Officer of Aerial Communications. "It is imperative that wireless operators have the right to choose a mode that works best for their technology and satisfies the needs of their customers."

The North American GSM Alliance L.L.C. is a group of 17 of North America's leading digital wireless Personal Communication Services companies that serve more than 3 million customers in more than 2,500 cities in 44 U.S. states, the District of Columbia, and four Canadian provinces.

The proposed family of 3G standards would form the foundation for the next generation of wireless communications systems. These advanced wireless systems will provide high-speed data and Internet access, full-motion video and other sophisticated multi-media services, as well as global roaming.

Currently, all major wireless manufacturers and many large system operators have agreed to support multiple modes including a form of W-CDMA technology, a form of cdma2000 technology, and TDD mode, as well as a TDMA standard. The three CDMA-based modes will vary with regard to such parameters as chip rate, synchronization structure, and pilot structure, to accommodate all operators' business needs.

According to Warkentin, the GSM Alliance supports that position and believes that having the Direct Sequence and TDD Modes with W-CDMA parameter values from ETSI, Japan, China and North America, as well as a Multi-carrier Mode with cdma2000 parameter values, will satisfy all backward compatibility requirements. In addition, the multiple-mode approach will bring increased innovation, technological solutions and more benefits for consumers. GSM Alliance 3G Position Page Two

The North American GSM Alliance L.L.C. is a group of North America's leading digital wireless Personal Communication Services companies. By using Global System for Mobile (GSM) communications technology, Alliance companies provide superior voice clarity, unparalleled security and leading-edge wireless voice, data and fax features for customers, whether at home, away or abroad.

GSM Alliance members include: Aerial Communications, Inc., Airadigm Communications, Inc.; BellSouth Mobility DCS; Conestoga Wireless Company; Cook Inlet PCS; DIGIPH PCS; Iowa Wireless Services, LP; Microcell Telecommunications Inc.; NPI Wireless; Omnipoint Communications LLC; Pacific Bell Wireless; Powertel, Inc.; STPCS Joint Venture, LLC; TWS, Inc.; Western Total Communications; Western Wireless Corp.; and Wireless 2000 PCS. The GSM Alliance works in cooperation with North American GSM equipment manufacturers: Siemens, Motorola, Nortel Networks, Nokia and Ericsson.

For Further Information, Contact:

Mike Houghton
Ph: 703-799-7383
GSM: 703-862-5803
Email:[email protected]

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