By Poularikas A.
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Power control command is sent by the base to mobiles at a rate of 800 bps. The reverse channels are made up of access channels and reverse traffic channels. The reverse channels contain up to 32 access channels per paging channel, operate at 4800 bps, and are used by mobiles to initiate communication with base and to respond to paging messages. The reverse traffic channel is a variable data rate channel and operates similar to the forward channels at 9600, 4800, 2400, and 1200 bps. 4 Pan European Global System for Mobile Communications The “Groupe Special Mobile” was established in 1982 to work toward the evolution of digital system in Europe, and its work now has become the Global System for Mobile (GSM) Communications system.