| 摘要 |
PURPOSE:To attain the use of call for the telephone tariff deposited to a coin deposition telephone set, by providing a device receiving a recalling signal, a means controlling a charge pulse and releasing a communication line at the receiving of the retransmission signal, and control means receiving the numeral from a telephone set. CONSTITUTION:When the recalling signal 3 (PB signal) is transmitted to a trunk 4(CRT) controlling a telephone set 1 from a coin deposition type telephone set 1 with the PB depression at a telephone exchange 6 controlling the telephone set 1, it is received at a retransmission signal receiver 5, and the receiving of the recalling signal is informed (code 10) to a central controller 7(CC). When the CC7 detects the receiving of the recalling signal, the transmission (code 8) of the charge pulse transmitted to the telephone set 1 is stopped and a charge pulse control signal 9 gives an indication to a charge pulse transmitter 11 (CPSND) with a charge pulse control signal 9. The CC7 releases an outgoing trunk 12 used for the call, transmits a dial tone to the telephone set 1 and connects the call to an outgoing register trunk to receive the numeral from the telephone set 1. |
