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GSM Celebrates its 20th Anniversary, 2.5 Billion Connections

Twenty years ago , an historic agreement was signed in Copenhagen by 15 telecommunications operators from 13 countries that led to the development of the Global System for Mobile Communications (GSM). Today, more than 2.5 billion people across 218 countries and territories, are served by GSM.

According to the GSM Association,

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http://www.gsmworld.com

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