FixedSAT (RST620) fixed satellite telephone provides a complete hands-free voice and data telephone for a wide variety of marine, land and air applications. FixedSAT RST620 operates in very much the same way you would expect a traditional car phone, providing a compact user handset that can be located close to the driver / captain, hands-free or private communications, integrated speaker, microphone and transceiver supporting a professional looking installation. There are added features that enable RST620 unit to be integrated to communications systems via the line in/out, serial data connectivity, radio mute, horn alert and a robust inbuilt 10-32V DC power supply.