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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 connected by an optical transmission line via a relay to a second optical transmission line monitoring device, the optical transmission line monitoring device comprising:
An optical transmission line monitoring method comprising steps performed by an optical transmission line monitoring device connected by an optical transmission line via a relay to a second optical transmission line monitoring device, the steps being:
A non-transitory computer-readable recording medium storing an optical transmission line monitoring program for causing an optical transmission line monitoring device connected by an optical transmission line via a relay to a second optical transmission line monitoring device, to execute;
Dependencies are inferred from the claim text.