| 摘要 |
PURPOSE:To eliminate the increase of facilities in a maintenance station even in case of increasing the number of remote stations, by performing the focusing of fault information to the maintenance station by fault information inserting time slot information to the maintenance station through a current transmission line from each of remote stations. CONSTITUTION:At the time of generating a certain fault in a remote station 1, a supervisory equipment 5 informs the fact to a central processing unit 7 at every generation of the fault, and the central processing unit 7 receiving information searches a vacant time slot on a channel 14, and after that, informs it to the supervisory equipment 5, and a common line signal equipment 6. In such way, an interface device 4 inserts all fault information from the supervisory equipment 5 to the vacant time slot. Meanwhile, along with this, the common line signal equipment 6 transmits the fact that the fault is generated in a common line signal equipment 8 in a maintenance station 2, and the fault information inserting time slot information, through a transmission line 15 to transfer the control information. In such way, the setting of an equipment to extract the fault information at the maintenance station corresponding to the number of remote stations can be saved.
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