| 摘要 |
PURPOSE:To respond to an incoming from both a transfer original terminal and a terminal to be transferred even after the setting of automatic incoming transfer, and to prevent the release of incomin transfer from being forgotten, by transmitting different incoming sound to both the transfer original terminal and the terminal to be transferred at the incoming to the terminal to be transferred. CONSTITUTION:When an incoming call arrives to a key telephone 1 of the transfer terminal in the state of the automatic incoming transfer is set, this incoming call is transferred to a telephone set to be transferred. In this case, an incoming tone is transmitted to the telephone set to be transferred from an incoming sound trunk 17. Although the incoming tone is transmitted to the transfer terminal and the terminal to be transferred from the different incoming sound trunks 6 and 17, the operation for this case is executed easily by the connection of a time division channel switch 5. Thus, since the terminal to be transferred can transmit the incoming tone also to the transfer terminal after the automatic incoming transfer set, the response is executed from any terminal. Since the in coming tone different from the normal tone is transmitted to the transfer terminal, the release of the incoming transfer being fogotten is recognized. |
