Intercom communication device, indoor interphone apparatus, intercom system

摘要

To downsize an indoor intercom device to make the device be difficult to recognize.SOLUTION: An indoor intercom device 20 connected to a lobby intercom device 10 and/or door intercom device includes: an outdoor communication unit 25a for receiving a video signal from the lobby intercom device 10 and/or door intercom device and transmitting/receiving a voice signal to/from the lobby intercom device 10 and/or door intercom device; and an indoor communication unit 25b for transmitting the video signal acquired from the lobby intercom device 10 and/or door intercom device to a registered television device 30. The indoor intercom device 20 mounts no monitor.SELECTED DRAWING: Figure 2