| 摘要 |
PURPOSE:To attain callout even if a remote party is not recognized, by connecting a telephone set to a caller number automatically through hooking, when a party received a message desires a response to the message. CONSTITUTION:Aassuming that a telephone set 1b is busy when a telephone set 1a makes a call to the set 1b. A private branch of exchange control section 3 detects it and stores the incoming number and the message to a storage control section 6. When a subscriber of the telephone set 1b makes hooking, the section 3 reads out the content of a storage control section 6. The section 3 calls out the telephone set 1a based on the caller number from the section 6, connects the lines of the telephone sets 1a, 1b through off-hooking of the telephone set 1a, allowing to perform the call between the both parties. |
