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techguy (True Lover): GSM means Global System for Mobile Communication.It is the most popular standard for mobile phones in the world.Develooed by European companies.First gsm network was launched in 1991 in Europe in Finland.Now spread over more than 225 countries world wide.Gsm uses a variation of Time Division Multople Access (TDMA) Next read cmnt also.
10-06-08 - 09:00:29

techguy (True Lover): Gsm digitises and compresses data and send it down a channel with two other streams of user data,each in its own time slot.Gsm network uses four type of frequencies 850mhz,900mhz,1800mhz,1900mhz.It is the most widely used digital wireless telephone technologies.More than two billion peoples use it everyday.Gsm accounts about 75 percent of global mobile market.Rest 25 percent is cdma technology which is used globaly.
*10-06-08 - 09:07:22