Global System for Mobile communications
| The Global System for Mobile communications is a second generation cellular telecommunication system which was first planned in the early 1980s. Unlike first generation systems operating at the time, GSM was digital and thus introduced greater enhancements such as security, capacity, quality and the ability to support integrated services. Initially, GSM was planned to be a European system allowing subscribers to roam between different networks however, GSM was quickly adopted by many other regions and is now a "Global System". Today, there are over 400 GSM network operators or carriers located in 182 countries and supporting collectively nearly 700 million subscribers |
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