GSM

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GSM –  (from the name of the group Groupe Spécial Mobile, later renamed the Global System for Mobile Communications) – the global standard for digital mobile communications, with time division multiplexing (TDMA) and frequency (FDMA). Developed by the European Telecommunications Standards Institute (ETSI) in the late 1980s.

 Groupe Spécial Mobile

The network is structured into a number of discrete sections:

  • Base Station Subsystem – the base stations and their controllers explained
  • Network and Switching Subsystem – the part of the network most similar to a fixed network, sometimes just called the “core network”
  • GPRS Core Network – the optional part which allows packet-based Internet connections
  • Operations support system (OSS) – network maintenance

 

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