| 摘要 |
PROBLEM TO BE SOLVED: To have interfaces between a station side device and the outside of the station side device matched in an optical communication network in which the station side device has a configuration where a plurality of combinations of a passive optical network and an optical line unit could exist.SOLUTION: A station side device 1a includes active (in current use) OSUs 1 to N, standby (spare) OSU N+1, and a control unit 14. The control unit 14 conveys management information on ONUs linked to a logical line to and from a network management system (NMS) 5. The logical line is defined by a fixed combination of an optical line unit and a passive optical network. On the other hand, the OSUs acquire management information linked to a real line. The real line indicates an actual combination of the optical line unit and the passive optical network. The control unit 14 converts a line linked to the management information between the logical and the real lines reciprocally by using mapping information. |
