| 摘要 |
PURPOSE:To detect quickly emergent error information by dividing plural supervisory boards and exchange stations respectively into optional number of stations, collecting the error information of the exchange station belonging to the group of the supervisory station and transferring the emergent error information to the supervisory board of the other group. CONSTITUTION:Supervisory boards SV11-SV1m and SV21-SV2m of the supervisory station are divided into two groups, digital link devices DL1, DL2 are provided corresponding to each group and the devices DL1, DL2 are controlled by a controller SSC. Exchange stations LO11-LO1i-LO1j-LO1n are connected to the device DL1 via relay stations TS11-TS1k and exchange stations LO21- LO2i-LO2j-LO2n are connected to the device DL2 via relay stations TS21- TS2k. The error information of the exchange station belonging to the group is collected by the polling system from the supervisory board of each group. The supervisory board detecting the error information requiring emergency transfers the emergency error information to the supervisory board of the other group via a signal line L. Thus, the supervisory board collects the error information of the group and the emergent error information of the other group and grasps the error state as to the entire exchange stations. |
