| 摘要 |
PURPOSE:To display a wide variety of information which changes in the course of time such as that from hospitals and hotels concentratingly, by displaying the information from a transmitter connected to a conventional subscribing telephone set on a display board connected to a reception exclusive use telephone set. CONSTITUTION:To a conventional subscribing telephone set as a transmission side, a transmitter 4 incorporating a switch box 3 fitted with an operation panel 2 is connected. To a reception exclusive use telephone set 5 as a reception side, a receiver 8 fitted with a display panel 7 via a relay device 6 is connected. Those are connected with a telephone exchanger at a telephone station via line protection devices 9, 10. At transmission sides A-Z, a telephone number of a reception exclusive use telephone set 5 of desired reception parties a-s is called out, and data are transmitted when the response is confirmed to display this data at the reception side. |
