Method used to specify the working and protection trails of an intra-board 1+1 protection group on OLP boards

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Select ports 1(RI1/TO1) and 2(RI2/TO2) of the OLP boards as the working and protection trails respectively.

Other related questions:
Method used to specify the working and protection trails of an intra-board 1+1 protection group on DCP boards
Select ports 1(RI11/TO11) and 2(RI12/TO12) of the DCP boards as the working and protection trails respectively. Alternatively, select ports 3(RI21/TO21) and 4(RI22/TO22) of the DCP boards as the working and protection trails respectively.

OLP/DCP board alarms that can trigger intra-board 1+1 protection switching
OLP or DCP boards support the function of dual feeding and selective receiving. They can work with OTU or line boards that do not support this function to configure intra-board 1+1 protection. An R_LOS or POWER_DIFF_OVER alarm reported by an OLP or DCP board can trigger intra-board 1+1 protection switching.

Whether services on the protection channel of an intra-board 1+1 protection group can be manually switched to the working channel
Sure. Intra-board 1+1 protection is generally unidirectional and non-revertive. Therefore, services need to be manually switched back to the working channel when the working channel is normal.

Whether system control boards need to be involved to implement intra-board 1+1 protection on OLP boards
Yes, the system control boards need to be involved.

Whether the intra-board 1+1 protection on the DCP board supports the revertive mode
No, it does not.

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