TELEPHONE SYSTEM COMPRISING A SATELLITE

摘要

The invention relates to a telephone system having a satellite arranged to relay a plurality of signalling channels and speech transmission channels. The system includes a plurality of earth stations comprising a plurality of line equipments each of which is connected to a subscriber, a signalling ??pment connected to the line equipments and arranged to transmit reports about the conditions of the subscribers and to receive commands about allocated calling and called sides of the speech transmission channels to calling and called subscribers over the signalling channels. A frequency synthesizer equipment is connected to the line equipment and is arranged to connect the calling and called subscribers to their allocated sides of the speech transmission channels under control of the commands. A central control station comprising a second-signalling equipment is arranged to receive the reports and transmit the commands and a control equipment connected to the second signalling equipment is arranged to generate the commands and address them to the earth stations.