A satmodem is a modem used to establish data transfers using a communications satellite as a relay.

There are two different types :

• One-way satmodems (DVB-IP modems) use a return channel not based on communication with the satellite, such as telephone or cable.

• Two-way satmodems (DVB-RCS modems, also called astromodems) employ a satellite-based return channel as well; they do not need another connection. DVB-RCS is ETSI standard EN 301 790.

See also: VSAT

External links

• Some one-way satmodem PCI cards and USB external boxes (http://members.fortunecity.com/adbaorg/satmodem.htm).
• Some astromodem cards (http://members.fortunecity.com/adbaorg/tarjetasatmodem.htm).