| 摘要 |
In the present invention, the communication quality of a communication network that provides a plurality of types of communication services is measured, and the measured communication quality is compared with a preset criterion to determine an abnormality type and whether or not management is necessary. When a determination is made that management is necessary, information about management is extracted from a database in which information about management with respect to abnormalities is recorded in association with communication network devices constituting the communication network, the service types of communication services and abnormality types, based on a communication network device, service type and abnormality type corresponding to the measured communication quality, and then an output such as a notification and control of the device based on the extracted information is given.
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