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in marketing it is general sales manager
GSM- Global System For Mobile- Is a Telecommunication System based on Time Division Multiplexing (TDM) Technology.
Group of special Mobile, Is a standard developed by the European Telecommunication standard Institute (ETSI)
GSM-Global System in Mobile Telecommunication in short 2G is a 2nd Generation technology in mobile Telecommunications. Its major focus was to implement global VOICE service. However, It also supported slower DATA transfer services named GPRS & EDGE.
