| 摘要 |
PURPOSE: A method for restoring a Virtual Path Connection(VPC) is provided to restore the connection in a short time in case of the generation of a defect in the VPC for supplying reliable VPC service to subscribers. CONSTITUTION: A generation of defect in a phase link(110) is reported to a link connection(111) for being reported to a partial network connection(112) of a network management layer. Then, the generation of defect is reported to a main virtual path trail(113) for sending the deleting demand of partial network connections(114,115) of access management layer including the termination of sending/receiving link for a VPC to each partial network connection. Then, the main connections in an access switchboard are deleted by demanding the disconnection of the partial connections of access to ATM(Asynchronous Transfer Mode) switches(116,117). Then, the disconnections are reported to the main virtual path trail for sending a switch over demand to a preliminary virtual path trail(118). The switch over demand is transferred to partial network connections(119,120) of access managing layer for connecting the partial network connections of access management layer to the ATM switches. Therefore, data are transferred and received through a preliminary VPC. Herein, the process is limited to the report of defect and to the control of the ATM switch for reducing the process time.
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