TELEPHONE EXCHANGE WITH CALLING TELEPHONE IDENTIFICATION

摘要

A telephone exchange (10) having a signal processor (20) which enables the identification code for respective telephones connected to the exchange (10) to be determined. The processor (20) is arranged so that it can be accessed by addressing an access code thereto from a telephone serviced by the exchange. The processor (20) is effective to automatically determine the identification code for calling a respective telephone when a particular call is made from that telephone. The processor (20) also transmits, back to the calling telephone, information as to the identification code.