Private telephone network connected to more than one public network

摘要: In conjunction with a data communication network (53) carrying multiple telephony signals and allowing for connection of telephone sets (17), system method in which two external feeders (55a, 55b) connect to the at distinct points via devices. The can be based on dedicated wiring or use existing premises medium such as telephone, powerlines CATV wiring. latter case, still carry original service it was installed. connections traditional PSTN, network, cellular any other provider using specific adapter used. case POTS signal, VoIP gateway (or converter) is required.