AUTOMATIC CALL TRANSFER SYSTEM CAPABLE OF CARRYING OUT CALL TRANSFER WITHOUT MANUAL OPERATION

摘要

PURPOSE:To automatically transfer an emerency call to the nearest telephone set by a personal discriminating number, by registering the personal discriminating number at a switchboard in addition to an ordinary telephone number. CONSTITUTION:At a switchboard 1 a personal discriminating number ID1 is registered to a specific subscriber in addition to an ordinary telephone number. The specific subscriber who registers his personal discriminating number ID1 always carries a radio transmitter TX1 which sends the number ID1 with him. When the signal is received by a radio receiver RX, the receiver RX transmits the number ID1 to the switchboard 1. The switchboard 1 can know receiving zones Z1-Z3 where the subscriber stays by discriminating the signal. Moreover, the switchboard 1 itself can automatically trace the destination of the subscriber by calling the telephone set of a corresponding telephone number. Therefore, an emergency call can be transferred automatically to the nearest telephone set by the personal discriminating number.