Global System for Mobile Communications (GSM) is the European standardfor digital cellular systems operating in the 900-MHz band.This technologywas developed out of the need for increased service capacity due to the ana-log systems’ limited growth. This technology offers international roaming,high-speech quality, increased security, and the capability to developadvanced systems features. The development of this technology was com-pleted by a consortium of pan-European countries working together to pro-vide integrated cellular systems across different borders and cultures.
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