OPTICAL TRANSPORT NETWORK SYSTEM, NODE DEVICE AND ALARM SIGNAL TRANSFER METHOD

摘要

PROBLEM TO BE SOLVED: To provide an optical transport network system that can transfer OTN alarm signals and improve scalability regardless of allocation of OSC wavelengths, transmission speed, a bit arrangement of OTN alarm signals on OSC wavelengths or the like.

SOLUTION: The optical transport network system transmits a main signal as an optical signal between a node device 1 and node device 2. The node device 1 comprises a monitor control part 17 that performs alarm processing according to an OTN recommendation, and sends a generated alarm signal packet via a monitor control network 3 to the node device 2 where alarm information is generated and stored. The node device 2 comprises a monitor control part 27 that extracts alarm information from the alarm signal packet and performs alarm processing according to an OTN recommendation based on the alarm information.

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