PB DIAL SIGNAL SENDING EQUIPMENT

PURPOSE:To obtain a PB dial signal sending equipment similar to a telephone set having PB dial functions by providing a means that connects a subscriber and a registering section, a trunk and a PB signal sending section by request for connection switching from the subscriber side and a restoring means. CONSTITUTION:A channel is constituted between a telephone set (TEL) 8 and a main wire through a line circuit LC 7, a switch network NW 9 and a trunk (TRK) 6. When the TEL 8 makes hooking operation and dials a predetermined special number, the NW 9 changes as 10, 11. When the TEL 8 dials next, a register RET 4 makes dial count and the information is transmitted to a PB sensor (PBSD) 5 through a CPU 2. PB dial signals are sent out from the PBSD 5 to the main wire side through the NW 11 and TRK 6. When the TEL 8 finishes dialing, and sending out of PB dial signals is completed, the original state is restored.