| 摘要 |
PURPOSE:To sound-record a necessary message from a lobby interphone by switching a calling line formed between a lobby interphone and a dwelling unit information board to a sound recording device when the called dwelling house is absent. CONSTITUTION:A visitor executes the calling of a prescribed dwelling house from a lobby interphone 2. At this time, when the dwelling house a called side does not respond in a prescribed time, a control part 1 switches the calling line between the lobby interphone 2 and a sound recording device 3. The lobby interphone 2 side informs a visitor that a message can be sound-recorded, with a sound or a display lamp. When the visitor executes the necessary message in accordance with the instruction, the message is sound-recorded at the sound recording device 3 and the control part 1 lights up the message pilot lamp of a house information board 5 provided at a called side.
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