Global System for Mobile Communications (GSM) @ Wikipedia
The Global System for Mobile Communications (GSM: originally from Groupe Spécial Mobile) is the most popular standard for mobile phones in the world.
GSM service is used by over 2 billion people across more than 212 countries and territories.[1][2] The ubiquity of the GSM standard makes international roaming very common between mobile phone operators, enabling subscribers to use their phones in many parts of the world.
GSM differs...
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http://en.wikipedia.org/wiki/GSM
3/12/2007
