This European Telecommunication Standard (ETS) is applicable to two-way (transmit and receive) Very Small Aperture Terminal (VSAT) satellite earth stations operating in the framework of a satellite network for digital communication purposes as defined in ETS 300 159 [1]. In these networks there is a set of control and monitoring functions at each VSAT and a separate set of Centralised Control and Monitoring Functions (CCMF). The control and monitoring functions are designed to limit interferences to users of the frequency spectrum due to a fault condition at the VSAT. This ETS is applicable to VSATs operating in any network configuration including star@ mesh and point to point connections. This ETS defines the requirements for the control and monitoring functions in a VSAT and is only applicable to the satellite access subsystem of the VSAT. ETS 300 161 [2] contains requirements for the Centralised Control and Monitoring Functions (CCMF). This ETS does not include any requirement@ recommendation or information about the installation of the VSAT.