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The Global System for Mobile Communications (GSM) is a second generation (2G) standard for mobile networks. In the early 1980s, a group was formed by the European Telecommunications Standards Institute (ETSI) to develop a digital mobile communication system. Aptly named Groupe Speciale Mobile (GSM), its main task was to develop a single, consistent network for all of Europe and come up with a better and more efficient technical solution for wireless communication.
Citation: https://www.omicsonline.org/sensor-networks-data-communications.php
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