| 摘要 |
PURPOSE:To confirm normal calling on a slave equipment side by providing a master equipment with a confirmation signal transmission part for the reception of a call signal an slave equipments with annunciation parts for call confirmation. CONSTITUTION:A voice signal transmitted between the master equipment 1 and slave equipments 2a and 2b by using a radio wave; the slave equipments 2 are provided with tranmission parts 24 which each transmits a call signal by the operation of a switch, and the master equipment 1 is provided with a call signal reception part 15 which generates a proper ringing tone during the reception of the call signal. Further, the master equipment 1 is provided with the confirmation signal transmission part 19 which transmits a reception confirmation signal when the call signal is received, and the slave stations 2 are provided with confirmation annunciation parts 30 which each annunciate call confirmation when the reception confirmation signal is received. Consequently, whether calling is performed normally or not is confirmed on the side of the slave equipment 2 from whether the call confirmation is annunicated or not. |
