| 摘要 |
PURPOSE:To give a message to a visitor or to record business of the visitor by providing the sound recording function to an interphone. CONSTITUTION:When an occupant of a house is at home, a mode selecting switch at an indoor terminal box 4 is selected to the ''at home'' position and the interphone is used as a conventional interphone. When a visitor depress a call switch while the mode selecting switch is selected to the ''absence'' position into the absence mode, the voice of the occupant of the house recorded in a storage circuit 12 at the recording mode is reproduced by a speaker 2 via a control circuit 11, a decoding circuit 10 and an amplifier 8. When the visitor talks his name and business to a speaker 2 while depressing a recording switch, the content is stored in a storage circuit 12. When the occupant of the house returned home from his visit depresses a reproduction switch, the voice of the visitor is reproduced and the business of the visitor is recognized. |
