| 摘要 |
PURPOSE:To relay a call to a specific party quickly and surely without use of an external line even when the specific party to receive the call transfer is not in existence at a prescribed extension telephone set. CONSTITUTION:When a caller master set 50 makes a call operation of a specific party, a call processing section 57 sends a call command signal including an ID code to caller slave sets 4-6 and a call reply processing section 15 of each of the caller slave sets 4-6 sends a call signal including the ID code to an external device. When a pocket keeper 30 receives this signal, a call reply processing section 37 implements collation of the ID code and uses a display section 32 and a buzzer 33 to make calling and returns a reply enable signal when a reply enable command operation is implemented. The call reply processing section 15 of any of the caller slave sets 4-6 receiving this signal allows the calling master set 50 to receive a reply signal commanding reply enable and the caller master set 50 receiving this signal uses a transfer command section 58 to give a prescribed transfer command to an exchange 7, which transfers an external phone call to one of extension telephone sets 1-3. |
