Whether the OSN 6800 transparently transmits bit errors in the PM and SM sections when ODU2 cross-connections are configured

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When ODU2 cross-connections are configured in the OSN 6800,
PM-section bit errors will be transparently transmitted (the PM section is at the ODU layer).
SM-section bit errors will not be transparently transmitted (the SM section is at the OTU layer).

Other related questions:
ODU1 cross-connections failing to be created on the TN52TOM board of OSN 6800 where no cross-connection is configured
The TN52TOM board does not support distributed ODU1 cross-connections.

Whether OSN 6800 devices support inter-subrack cross-connections
No.

Whether OSN 6800 devices support cross-connections between subracks
OSN 6800 devices do not support cross-connections between subracks.

Whether cross-connections from ODU2 to ODU3 need to be configured when ODU0 services are configured on the NS3 board
No, there is no need to configure the cross-connection. By default, the configurations are issued on the NMS.

Cross-connect capacity of each slot in an OptiX OSN 6800 subrack
If the TN12XCS board is used, each of the IU1, IU4, IU11, and IU14 slots supports a maximum cross-connect capacity of 40 Gbit/s. Each of the other service slots supports a maximum cross-connect capacity of 20 Gbit/s. If the TN11XCS board is used, each of all service slots supports a maximum cross-connect capacity of 20 Gbit/s. When IU17 is used as a service slot, no service grooming is supported.

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