March 2006
Beginner
216 pages
6h 56m
English
Content preview from Cellular Communications Explained
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6
CHAPTER SIX
GSM
The system now referred to as GSM started life as the Groupe Speciale Mobile. Later this was
changed to represent its global nature, while keeping the same initials, to Global System for Mobile
communications.
The aim was an initiative to dev elop a digital mobile phone system that would support roaming
across country borders and also provide improved capacity when compared to the analogue
systems that were then in use. As the press had made much of the lack of security of some of the
analogue systems that had been in use, with more than one high-ranking dignitary having their calls
listened to by outsiders, call privacy and security were also high on the agenda.
The goals set for the system were tough, as no digital system had been ...
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