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                                             GSM

Special Group of the GSM mobile phone is the short form. Global System for Mobile Communications as it is called. Is the most popular mobile phone network technology in the world. Brought technology Erikasanera and the supporting infrastructure from the Finnish rediolinaja to the market in 1991, and the first GSM technology. In 1997, serving GPRS in jiesaeme. Edge (baphamaba) associated with the service in 1999.