| 摘要 |
PURPOSE:To monitor the operating state of a radio equipment in a line connection terminal station from a line connection control station by arranging a monitoring transmitting equipment for transmitting a monitor signal in the line connection terminal station and arranging a monitoring receiving equipment for receiving the monitor signal in the line connection control station. CONSTITUTION:In the line connection control station 1, a test calling code is sent from a control part 12 to a line control device 3. In the line connection terminal station 6, the test calling code is received, and at the time of deciding that the received code is sent for the self-station, a line control device 8 sends a test call response code to the station 1 and successively starts a control part 17 and a monitor signal sending circuit 16. At the time of receiving said test call response signal by the station 1, the control part 12 connects the line to a monitor signal receiving circuit 11. When a monitor signal from a radio equipment 7 is received by the circuit 11, the control part 12 restores a switching circuit 10 and commands the device 3 to restore the line connection. |
