Interoperable wireless data

Data services offered over cellular networks are described. The limitations of data transmission over analog cellular networks and the main challenges to be met in defining a standard for effective data transmission over digital cellular channels, devoting particular attention to North American developments, are discussed. Some of the technical characteristics of the analog and time-division multiaccess (TDMA) digital cellular systems in North America are compared, including interfaces, internetworking functions, home and visitor location registers, layering of protocols, initiation of data service, and timing and synchronization.<<ETX>>

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