| 摘要 |
PURPOSE:To attain easily the operation indication of a destination incoming telephone set and automation of manual confirmation of talking through in- channel (through a channel) from an outgoing telephone set by adopting the circuit constitution that a call responds automatically to a pseudo terminal device at the incoming side and providing a means returning the own subscriber number and a reply code in receiving a control data from a outgoing side by the side circuit. CONSTITUTION:When outgoing/incoming telephone terminal sets 2, 3 make talking, a signal attended with the connection, that is, a subscriber line signal inputted/outputted to/from an exchange 1 via subscriber lines 4, 5, and a reply signal returned to the terminal sets 2, 3 from the exchange 1 thereby are transmitted/received by an outgoing telephone set control section 7 and an automatic incoming reply control section. Then the subscriber number of a talking destination 3 from the controller 9 and a control code commanding the confirmation are confirmed via a channel itself by means of a PB signal by transmitting the control code indicating the confirmation to an automatic reply control section 8 being a pseudo test equipment of a talking destination incoming telephone terminal device 3 for confirmation. |
