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Small-sized satellite stantsie known under as VSAT (Very Small Aperture Terminal), are applied in telecommunications from the beginning 90х years.
To VSAT on the accepted, international classification stations with diameter of aerials no more than two and a half meters concern.
The internal block or satellite modem IDU (InDoorUnit)
And itself, nepostredstvenno the aerial and the transceiver is external block ODU (OutDoorUnit)
Now technology VSAT supports speed on an input to 4Mbit/with (in a mode multiCast to 30Mbit/c) and on an exit to 1-2 Mbit/with. There are various kinds of picking VSAT: On kollichestvu Ethernet ports, telephone ports, the additional built in functions such as routers etc. At present in the world is more than one million VSAT, the basic part in the USA (about a half-million) in particular in Russia nearby 5000, but rates of development remain very high.
Osnovynmi as manufacturers in the world are considered Israeli Gilat (SkyEdge) and American iDirect.
As a rule basically VSAT consolidation of remote segments of corporate networks, podkljucheniej terminals etc. is used for the organization of broadband access to the Internet, telecommunication.
As a rule it is used outside of cities where there is no possibility to use land telecommunications and communication channels.