Technologies
Analog
CDMA
GSM
Satellite
TDMA
3G
Other

Phones
Information
Manuals
Ringtones
Technical

Services
Software
Links
Forums
News
Reviews
SMS

Articles
Assorted
Bluetooth
Data
Etiquette
Health
Phones
SMS
Statistics
WAP

Inmarsat

The Inmarsat System consists of nine satellites in geostationary orbit. Four of these satellites, the latest Inmarsat-3 generation, provide overlapping operational coverage of the globe (apart from the extreme polar areas). The others are used as in-orbit spares or for leased capacity.

Each Inmarsat-3 satellite also operates a number of spot beam "cells". This enables the satellites to concentrate extra power in areas of high demand and to provide services to smaller, simpler terminals. Roaming users communicate direct via Inmarsat's satellites.

Inmarsat airtime services are available world-wide through a network of about 100 leading service providers. An extensive system of equipment manufacturers, distributors and dealer outlets ensures world-wide sales and service support. Often service arrangements are bundled with the sale or lease of terminals. Some service providers also operate Inmarsat land earth stations (LES).

There are about 40 LES in 31 countries. These stations receive and transmit communications through the Inmarsat satellites and provide the connection between the satellite system and the world's fixed communications networks.