Slots for the 40G board on OSN 6800 and service capacity limit

1. Service capacity limit:
OptiX OSN 6800 has the TN1K1AFB, TN1K2AFB, and TN1K3AFB backplanes, and the TN11XCS and TN12XCS cross-connect boards. Different combinations have different limits on the service capacity and cross-connect configuration of the 40G board.
Description of the backplane subrack and cross-connect bus of the cross-connect board:
(1). All slots of TN1K1AFB backplanes have only eight pairs of cross-connect buses with a cross-connect capability of 20G (8 x ODU1) and do not support single-slot 40G boards (such as the TQX or NQ2 board that can use only channels 1 and 2). However, dual-slot 40G boards (such as the NS3 board) are supported.
(2). Due to the cross-connect capacity limit, all slots of the TN11XCS board have only eight pairs of cross-connect buses with a cross-connect capability of 20G (8 x ODU1) and do not support single-slot 40G boards (such as the TQX or NQ2 board that can use only channels 1 and 2). However, dual-slot 40G boards (such as the NS3 board) are supported.
(3). The combination of the TN12XCS and TN1K2AFB boards supports four slots, each of which has a 40G cross-connect capability. That is, slots 1, 4, 11, and 14 have 16 pairs of active/standby centralized cross-connect buses with a cross-connect capability of 40G (16 x ODU1) and support single-slot 40G boards (such as the TQX and NQ2 board). The other slots have eight pairs of active/standby centralized cross-connect buses with a cross-connect capability of 20G (8 x ODU1) and do not support single-slot 40G boards (such as the TQX or NQ2 board that can use only channels 1 and 2). All slots support dual-slot 40G boards (such as the NS3 board).
(4). The functions of the TN1K3AFB board are consistent with those of the TN1K2AFB board.
Board service capacity and cross-connect configuration:
(1). In scenarios where both TN12XCS and TN1K2AFB (TN1K3AFB) boards are used, the NQ2 and TQX single-slot 40G boards can be inserted into slots 1 to 4, and support 40G service capacity and cross-connect configurations for ports 1 to 4. If the boards are inserted into other slots, they support only 20G service capacity and cross-connection configurations for ports 1 and 2. If cross-connections are configured for ports 3 and 4, an error will be reported.
(2). In scenarios where TN12XCS and TN1K2AFB (TN1K3AFB) boards are not used together, if the NQ2 and TQX single-slot 40G boards are inserted into other slots, they support only 20G service capacity and cross-connect configurations for ports 1 and 2. If cross-connections are configured for ports 3 and 4, an error will be reported.

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