GSM stands for Global System for Mobile communications.GSM is European Telecommunications Standards Institute (ETSI) adopted ,second generation digital mobile communication technology.
History of GSM:
The large number of different analog systems used in Europe did not represent an ideal situation from a subscriber point of view. Along with the need to accommodate an increasing number of users and to establish compatibility with the evolution of the fixed network towards digital systems, this led the Conference Europeenne des Posts et Telecommunications (CEPT) to establish a "Groupe Special Mobile" in 1982. The work of that group became the GSM system
("Global System for Mobile communications").Originally specified as a pan-European digital cellular standard, GSM has spread much further afield. GSM networks are now operational in
Europe, the Middle East, Africa, the Asia-Pacific region.
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