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Motorola First to Successfully Complete CDMA Network Roaming Tests in China.

ARLINGTON HEIGHTS, Ill.--(BUSINESS WIRE)--Oct. 15, 1997--Motorola, Inc.'s Cellular Infrastructure Group (CIG) has successfully completed CDMA (Code Division Multiple Access) inter-system network roaming tests among the four cities of Beijing, Guangzhou, Shanghai and Xian in the People's Republic of China.

The multi-city CDMA roaming tests, the first to be completed in China, were conducted jointly with China Telecom Greatwall Network, a cooperative entity between China's Ministry of Posts and Telecommunications (MPT) and China Electronic System Engineering Company (CESEC). Motorola CIG's CDMA network in China's capital of Beijing is the first to complete network roaming tests with the three other CDMA trial systems currently being tested in Guangzhou, Shanghai and Xian.

The inter-system networking utilizes the North American industry-standard IS-41 (Cellular Radio Telecommunications Inter-System Operations) Revision B, as required by the Greatwall Specifications. The IS-41 protocol permits subscribers on the vendor's cellular infrastructure system to roam to a different vendor's system. The Motorola CIG system has not only demonstrated successful roaming using IS-41B, but has also shown its forward compatibility in interworking with IS-41C.

"The successful completion of the CDMA inter-system networking in China demonstrates Motorola CIG's leadership in CDMA technology and our strong commitment to open interfaces standards," said Tom Hinton, vice president and general manager of Motorola CIG's Greater China Cellular Infrastructure Division (GCCID). "This accomplishment is crucial for the commercialization of Motorola CIG's Beijing CDMA System."

The CDMA trial system in Beijing announced last April uses 31 of Motorola CIG's SC(TM)2450 base station, two CBSC (Centralized Base Station Controller), one OMC-R (Operation and Maintenance Center Radio) base station control system and one large capacity EMX(R) 2500E mobile switching systems. The initial capacity of the Beijing CDMA commercial trial system is 43,000 subscribers, currently the largest CDMA system in China.

CDMA is a second-generation digital cellular technology which very efficiently uses radio spectrum, an increasingly valuable but limited resource in China. Besides being easily integrated with AMPS (Advanced Mobile Phone Services) or TACS (Total Access Communications Systems) networks in a dual-mode operations, CDMA can increase capacity by eight to ten times that of analog channels and three times that of other digital technologies.

Motorola, Inc. is one of the world's leading providers of wireless communications, semiconductors, and advanced electronic systems, components and services. Motorola's 1996 sales were $28 billion.

For more information on Motorola CIG, visit the web site at "" .

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Scott Wyman, 847/632-4691

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Publication:Business Wire
Date:Oct 15, 1997
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