02-10-2010, 12:33 PM
[attachment=4827]
Done by:
BINOTA MAHATO
Abstract
Satellite Telephones
-A satellite telephone, satellite phone, or satphone is a mobile phone that communicates directly with orbiting communications satellites and the coverage area may include the entire earth.
-The Satellite phones either make use of satellites in geostationary orbit or they make use of satellites in low earth orbit.
-Satellite telephones are utilized in circumstances where there is no access to a telephone or cellular network
-For example ships at sea