TRANSMISSION SYSTEM OF CIRCUIT CORRESPONDENCE SUBSCRIBER INFORMATION

摘要

PURPOSE:To make the extraction of information from an exchange main body unnecessary and to accomplish the transmission of subscriber information to the exchange by providing a device at the side of a subscriber circuit of a station corresponding to the subscriber circuit and transmitting the subscriber information. CONSTITUTION:An exchange 8 and a subscriber circuit corresponding device 3 are provided in a telephone exchange. Each device 3 is provided for every 20 persons of subscribers 1 and 2, and line monitor units 4 and 5 for measuring a potential of a subscriber circuit and a circuit 7 for storing subscriber information are provided in the device 3. When the subscribers 1 and 2 off-hook for facsimile communications, dial tones are transmitted to the subscribers from the exchange 8 through a changeover switch S. Thus the subscribers transmits the prescribed information.