What is GSM?
GSM (Global
System for Mobile communications) is an open, digital cellular technology used for
transmitting mobile voice and data services.
What does GSM
offer?
GSM supports
voice calls and data transfer speeds of up to 9.6 kbps, together with the transmission
of SMS (Short Message Service).
GSM operates
in the 900MHz and 1.8GHz bands in Europe and the 1.9GHz and 850MHz bands in the
US. GSM services are also transmitted via 850MHz spectrum in Australia, Canada and
many Latin American countries. The use of harmonised spectrum across most of the
globe, combined with GSM’s international roaming capability, allows travellers
to access the same mobile services at home and abroad. GSM enables individuals to
be reached via the same mobile number in up to 219 countries.
Terrestrial
GSM networks now cover more than 90% of the world’s population. GSM satellite roaming has
also extended service access to areas where terrestrial coverage is not available.
Why GSM?
The GSM study
group aimed to provide the followings through the GSM:
Improved
spectrum efficiency.
International
roaming.
Low-cost
mobile sets and base stations (BSs).
High-quality
speech.
Compatibility
with Integrated Services Digital Network (ISDN) and other telephone
company services. Support
for new services.
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