Abstract: The present invention relates to a communication system which includes a plurality of N communication links coupled to a central office. A plurality of N-1 user devices are coupled to N-1 of the N communication links with each of the N-1 user devices including a memory for storing a translation table relating a device identification code for each of the N-1 user devices to a directory code associated with each of the communication links. An input is situated at each of the N-1 user devices, for allowing a user to supply a device identification code of another user device to be called. A translating circuit is situated at each of the N-1 user devices, for translating the device identification code to it's associated directory code responsive to the input of a device identification code by the user by reading the translation table.