| 摘要 |
In a subscriber testing system, a V5 interface protocol is used as a communication protocol. A switch includes a processing unit for transmitting to a communication node a piece of test specifying information, inputted from a maintenance/operation terminal, for indicating a subscriber test for a subscriber's line and subscriber circuit that correspond to an accommodated subscriber by use of specifying information of a message type based on the V5 interface protocol. The communication node includes a processing unit for making a testing device execute the subscriber test on the basis of the test specifying information received via a logical link from the switch, and sending test result information for informing of a result of the test back to the switch by use of specifying information of a message type based on the V5 interface protocol.
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