WTR period of OLP protection

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The OLP board supports optical line protection, intra-board 1+1 protection, and client 1+1 protection. If the reversion mode is revertive, the default WTR period is 10 minutes.

Other related questions:
WTR time of OLP protection
The OLP board supports optical line protection, intra-board 1+1 protection, and client 1+1 protection. If the reversion mode is revertive, the default WTR period is 10 minutes.

OLP protection implemented by TN11OLP01 or TN12OLP01
OLP can be classified into OTS OLP protection and OMS OLP protection. Whether TN11OLP01 or TN12OLP01 boards can be used to form OLP depends on the input optical power values of optical ports RI1 and RI2 on OLP boards. If the input optical power values of both optical ports RI1 and RI2 on OLP boards do not exceed 7 dBm, TN11OLP01 or TN12OLP01 boards can be used to form OTS OLP protection. In the OMS OLP protection scenario, the input optical power values of optical ports RI1 and RI2 are prone to exceed the maximum optical power (+7 dBm) of the TN11OLP01 and TN11OLP02 boards. Therefore, TN11OLP01 or TN12OLP01 boards cannot be used in this scenario.

Whether the working and protection channels must be fixed when the OLP board is used to configure OLP protection
When the OLP board is used to configure OLP protection, the working channel must be the optical port 1 (RI1/TO1) of the OLP board and the protection channel must be set to optical port 2 (RI2/TO2). Otherwise, the OLP protection group cannot work normally.

Principle and implementation mode of the OLP protection
The OLP protection uses the dual feeding and selective receiving function of the OLP boards and uses separate fibers for working and protection trails between adjacent sites to protect signals on the line.

Basis for OLP protection switching of the OSN 8800
OLP supports manual switching and automatic switching. Automatic OLP switching is performed based on the Variance Threshold Between Primary and Secondary Input Optical Power (dB) parameter value configured on the NMS.

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