GSM History

1.1 HISTORY OF GSM
During the early 1980s, analog cellular telephone systems were experiencing rapid
growth in Europe, particularly in Scandinavia and the United Kingdom, but also in
France and Germany. Each country developed its own system, which was incompatible
with everyone else's in equipment and operation. This was an undesirable situation,
because not only was the mobile equipment limited to operation within national
boundaries, which in a unified Europe were increasingly unimportant, but there was also
a very limited market for each type of equipment, so economies of scale and the
subsequent savings could not be realized.
The Europeans realized this early on, and in 1982 the Conference of European Posts and
Telegraphs (CEPT) formed a study group called the Groupe Spécial Mobile (GSM) to
study and develop a pan-European public land mobile system. The proposed system had
to meet certain criteria:
· Good subjective speech quality
· Low terminal and service cost
· Support for international roaming
· Ability to support handheld terminals
· Support for range of new services and facilities
· Spectral efficiency
· ISDN compatibility
And interaction with the Integrated service digital network (ISDN) which offers the
capability to extend the single-subscriber –line system with the various to a
multiservice system.
The first commercial GSM system, called D2, was implemented in Germany in 1982.

This valuable channel of communication can equip us with a powerful tool for
controlling desired device or process parameter from distant location, through
electromagnetic waves.
With a little effort logic can be setup to even receive a feedback on the status of the
device or the process being controlled.