| 摘要 |
PROBLEM TO BE SOLVED: To add a reproduction function for video and a guide function of a calling operation such as channel selection to a front entrance device. SOLUTION: A front entrance device 1 where a visitor performs a calling operation is provided with a front entrance device liquid crystal monitor 11 which outputs video (video signal) S2 picked up by a camera 12 and also guides a calling operation such as channel selection. Thus, the visitor can confirm its own video, a called resident also can confirm the more accurate video of the visitor with living space device liquid crystal monitors 21 of living space devices 2a, 2b,... and then can respond to the calling and, speech communication is performed between the living space microphones 22a and living space receivers 22b of handsets 22 of the living space devices 2a, 2b,... and the entrance device microphone 13 and entrance device speaker 14 of the front entrance device 1.
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