Whether a cross-connect board is required when ND2 is used to achieve electrical regeneration

4

The cross-connect board is not mandatory in this scenario. If the cross-connect board is configured, you can configure pass-through services to achieve electrical regeneration. If no cross-connect board is configured, you can configure ND2 in electrical regeneration mode to achieve regeneration of OTU2 and OTU2e signals.

Other related questions:
Whether regeneration is supported on ND2 boards
ND2 boards can regenerate one channel of OTU2/OTU2e signals in both directions.

Whether an ND2 board can be used as the regeneration board for the LSX board
The WDM-side signals of the TN11LSX/TN12LSX board can be regenerated using another TN11LSXR board. The WDM-side signals of the TN13LSX/TN14LSX board can be regenerated using the TN12ND2/TN52ND2/TN53ND2/TN57ND2/TN55NO2/TN55NH2/TN53NQ2/TN54NQ2/TN57NQ2 board.

Cross-connection scheduling capabilities supported by ND2 boards
The service scheduling capabilities vary according to the versions of ND2 boards. The details are as follows: TN11ND2/TN12ND2: 8 x ODU1, 2 x ODU2, 2 x ODU2e TN52ND2T01/TN52ND2T02/TN52ND201M01: 16 x ODU0, 8 x ODU1, 2 x ODU2, 2 x ODU2e TN52ND2T04/TN53ND2/TN57ND2: 16 x ODU0, 8 x ODU1, 4 x ODUflex, 2 x ODU2, 2 x ODU2e

Requirement for cross-connect boards when the TQX board is used to transmit STM-64 services
No.

Whether the standby cross-connect board needs to be forcibly configured for electrical-layer ASON
The standby cross-connect board is not mandatory, but is recommended to ensure normal service operation.

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