| 摘要 |
PURPOSE:To attain urgent communication with a slave station in a busy state by sending an incoming call notice and information such as a caller telephone number to a slave station via a control channel of a same signal string as that of a busy speech channel by the slave station and allowing the slave station to notify the reception in sound or in display. CONSTITUTION:A main control section 40 transfers the information such as a caller telephone number sent from a guide signal processing section 20 to a radio equipment interface circuit 60 and gives a command of sending an incoming call notice and the information such as caller telephone number to the slave station 4 via a control channel of the same signal string as that of a speech channel busy with the slave station 4 to the radio equipment interface circuit 60. Each slave station 4 receives a control channel at all times to monitor the information and notifies the reception in voice or display when the incoming call notice and the information such as caller telephone number are received. Thus, an urgent contact is taken to a busy slave station. |
