The GSM standard originally described a digital, circuit-switched network optimized for full duplex voice telephony. ĢG networks developed as a replacement for first generation ( 1G) analog cellular networks. By the mid-2010s, it became a global standard for mobile communications achieving over 90% market share, and operating in over 193 countries and territories. It was first implemented in Finland in December 1991.
GSM may also refer to the Full Rate voice codec. GSM is also a trade mark owned by the GSM Association. The Global System for Mobile Communications ( GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation ( 2G) digital cellular networks used by mobile devices such as mobile phones and tablets.
ĭecember 1991 31 years ago ( December 1991) The dots symbolize three clients in the home network and one roaming client. The GSM logo is used to identify compatible devices and equipment.
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