| 摘要 |
PURPOSE:To reduce the number of sets and to decrease the cost by switching standby frequency of a voice channel into a control channel when a fault exists in the control channel due to interference and using the voice channel as the standby frequency of the control channel. CONSTITUTION:When an interference fault report is outputted from an input/ output device 10, the operator inputs control information S1 manually to the input output device 10. When a controller 17 of a voice channel device 18 receives control information S2, a radio equipment is closed and a switch 16 is opened upon the receipt of the control information S3. Upon the receipt of control information S4, a controller 13 of the control channel equipment 14 changes an output frequency of a radio equipment 2 from fC into fV and switches a switch 12 upon the receipt of control information S5. Thus, the control channel sent in the frequency fC is sent in a standby frequency fV a fault of the control channel due to the interference of the frequency fC is eliminated. |
