| 摘要 |
PURPOSE:To reduce the burden induced at the installation of an exchange at a calling side, by transmitting a required specific number, an incoming signal number and a caller number from a telephone set terminal from a caller. CONSTITUTION:When a caller dials a specific number 0XYY for international automatic instantaneous transmission from a telephone set 10, a domestic link from a telephone set terminal 1A to an international exchange 3 via a domestic telephone network 2 is set. In the international exchange 3, the domestic is connected to a PB receiver 33 via a channel switch 30 with the instruction of a central controller 31. Further, when the said caller inputs the incoming number and the caller number, they are transmitted from a PB transmitter 11 to the domestic link. In the international exchange 3, the PB receiver 33 transfers a PB signal to the central controller 31, which selects an international line 4, and transmits an incoming number for the detailed recording. |
