COMMUNICATIONS SYSTEM HAVING ROAMING FACILITIES

Communications system, comprising several communications networks, and roaming means for facilitating roaming of users on said several communications networks. The roaming means are formed by a worldwide (satellite-) communications network (SCN), which is in connection with each of said several communications networks (PLMN, PSTN). The satellite-communications network (SCN) assigns a code (VNO) to each of said several communications networks (PLMN, PSTN) and enters, under control of a control module (CTR) into a register (VCR), the satellite-communications network, under control of the control module, realising mutual roaming facilities to subscribers of each of said entered communications networks. The terminals of the subscribers of the communications networks (PLMN, PSTN) comprise an identification module (SIM) for reading in and passing on identification codes (IMSI), a code (VNO) among them which corresponds to the code (VNO) entered into the register (VCR).