| 摘要 |
PROBLEM TO BE SOLVED: To provide a call device which enables a user to easily confirm a transmitter's telephone number or the like and easily enables mutual calls in accordance with transmission telephone number informing services. SOLUTION: A telephone voice signal and a number informing information signal from a transmitter are outputted to a decoder box 102 by a wire by way of a telephone set 108 and a data converter 105 or by a radio by way of a transmitter/receiver 106. A television 104 displays the transmitter's telephone number or name in a display part and, at the same time, a telephone voice of the transmitter is outputted from the speaker. On the other hand, a sound signal inputted from a speech microphone 103 is transmitted to the transmitter from a public line by way of the decoder box 102. Thus, mutual call is performed.
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