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AssigneeNEC Corporation
InventorNaofumi KUROSAWA
Estimating the term…
An optical transmission line monitoring device is one of two facing optical transmission line monitoring devices connected by an optical transmission line via a relay, and includes a transmission unit that transmits an own-device monitoring signal to the optical transmission line, a reception unit that receives a monitoring signal, a mixture of a turnback monitoring signal, which is the own-device monitoring signal turned back, and an other-device monitoring signal, having a pulse width and amplitude different from the own-device monitoring signal and transmitted from the facing optical transmission line monitoring device, an identification unit that identifies the turnback and other-device monitoring signals in the monitoring signal, using identification criteria for identifying the turnback and other-device monitoring signals from the monitoring signal, and an output unit that outputs an identification result for the turnback and other-device monitoring signals. Therefore, the optical transmission line is reliably monitored using opposing bidirectional monitoring signals.
An optical transmission line monitoring device that is one of two optical transmission line monitoring devices facing each other and connected by an optical transmission line relayed by a relay, the optical transmission line monitoring device comprising:
An optical transmission line monitoring method comprising steps performed by one of two optical transmission line monitoring devices facing each other and connected by an optical transmission line relayed by a relay, the steps being:
A non-transitory computer-readable recording medium storing an optical transmission line monitoring program for causing one of two optical transmission line monitoring devices, facing each other and connected by an optical transmission line relayed by a relay, to execute
Dependencies are inferred from the claim text.