| |
Satellite
telephones, rather than using the wired system of traditional telephones,
transmit & receive signals via an artificial communications satellite.
These satellites function as an integral part of the global telecommunications
network. Satellite telephone communications are reliable because they
do not rely on regional networks & are therefore available anywhere
in the world.
A variety of different types of satellite
phones are available for diverse needs; marine equipment & vehicular
phones are available as well as fixed site & portable systems.
Satellites are grouped into separate networks; Globalstar, Immarsat,
Magellan GPS, Motient & Iridium. These networks each contain
different amounts of satellites, use different methods & operate
with varying degrees of sophistication.
[BACK]
|
|