| 摘要 |
PURPOSE:To inform the end of talking in an excellent way with simple configuration by sending a command to ring a call tone for a short period of time to a slave set when a master set detects the end of talking either by the master set or by the slave set. CONSTITUTION:When a central controller 13 of a master set 10 detects the end of trunk line talking and extension talking, the controller sends a simultaneous call command to each of slave sets 20, 30 for a short period of time to allow speakers 26, 36 the slave sets 20, 30 for a short period of time to ring a call tone end to allow a speaker 17 of the master set 10 to ring the call tone for a short period of time. When either the master set 10 or any of the slave sets 20, 30 is used and a trunk line talking or extension talking is finished, a call tone rings for a short period of time from the speaker 17 of the master set 10 and a call tone rings for a short period of time from the speakers 26, 36 of the slave sets 20, 30. Thus a call tone rings instantaneausly from the master set 10 and the slave sets 20, 30 and the end of talking is informed by the instantaneous call tone to inform of the end of talking. |
