VSAT is the acronym for Very Small Aperture Terminal. It is a small terminal that can be used for one way and/or interactive communications via satellite.

VSAT networks offer value-added satellite based services capable of supporting internet, data, video, LAN, and voice/fax communications.

Many countries are implementing or operating VSATs to extend their national telephone network in remote areas. A large majority of such regions are poor and geographically isolated, and the sun is often the only source of electricity available.
Solar powered VSATs are widely used for rural telecom, disaster recovery, and off-shore network.