INMARSAT - international satellite communications company, founded in 1979, originally as an intergovernmental organization.
He manages a team of 11 geosynchronous (GEO) communications satellites. The company's shares are traded on the London Stock Exchange (ISAT).
Available services include both conventional telephone and data transmission, as well as the transmission of distress calls. Communication is performed by using special digital transmitters, called terminals. The signal is transmitted to one of the satellites and then relayed to a ground station. This ensures reliable communication in remote areas.
Telecommunications Services Company in 2012 used the Russian Navy in connection with the failure of their own channels of communication.
Satellite constellation consists of 11 satellites. Currently, the bulk of the data stream is processed by the third generation of satellites (5 satellites), running in 1996-1998. They are gradually being replaced by the fourth generation satellites; launched four satellites (Inmarsat-4), two in 2005 and one in 2008, and fourth in 2009.
Inmarsat owns the following codes:
Phone code 870 - the general, it is used when it is not known through a satellite to make calls. However SNAC does not support calls to Inmarsat-A terminals.
The remaining four codes belong to regions served by a particular satellite, as a rule, one at each satellite, usually referred to as "ocean regions".
Inmarsat has developed a set of networks, providing a variety of services (most networks provide multiple services). At the moment, there are the following networks: