| 摘要 |
PURPOSE:To recognize the incoming call of an automobile telephone set and to hold the call remotely by providing a portable small sized transmitter-receiver and providing a means sending a weak radio wave including incoming information. CONSTITUTION:When a call arrives in an automobile telephone set 1 via an antenna 33, a transmitter 2 is started and the weak radio wave including the incoming information signal 111 is sent via an antenna 30 and when a small sized transmitter-receiver 5 receives it via all antenna 32, a call tone rings from a speaker 12 to inform the arrival of call to the automobile telephone set 1. In closing a holding switch 11, the weak radio wave including a hold command signal 112 is sent and when the receiver 3 receives it, a holding control circuit 4 holds the telephone set 1. Thus, when the user leaves its automobile, the call is recognized by carrying the small sized transmitter-receiver 5. Moreover, the call is kept in the holding state by remote control.
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