| 摘要 |
PROBLEM TO BE SOLVED: To automatically control a system in accordance with the propriety of the ringing of an incoming call by providing a means for detecting whether a base station exists in an incoming sound transmission inhibition area or not based on information from the base station at the time of the incoming call to a radio slave machine and controlling the ringing and non-ringing of an incoming sound to the radio slave machine in accordance with the detection output. SOLUTION: An exchange transmits and sets incoming call non-ringing information to the base station in the incoming sound transmission inhibition area. The base station transmits position registration data containing incoming call non-ringing information at prescribed electromagnetic wave intensity. When the power of the radio slave machine 5 is supplied, CPU 57 is started and the presence or absence of the reception of position registration data from the base station is judged. When the existence is recognized, an automatic answering mode where the incoming sound is not rung is set. When the incoming call from the base station is received, a recording/ reproduction part 61 is started, a response message is transmitted and an important message is recorded. That the recording of the important message exists is displayed on a display part 62 after movement to the area of the other base station and it is reported to the possessor of the radio slave machine 5. |
