Whether the TN12LSX and TN13LSX boards can be interconnected with each other

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The TN12LSX board supports FEC or AFEC while the TN13LSX board supports FEC or AFEC-2.
The TN12LSX board in AFEC mode cannot be interconnected with the TN13LSX board in AFEC-2 mode. The two boards can be interconnected only when the FEC types of the boards are both set to FEC. Alternatively, if the FEC working status of the board is disabled, the board can also be interconnected.

Other related questions:
Whether TN53NQ2 can function as the regeneration board for TN11LSX, TN12LSX, and TN13LSX
When TN53NQ2 functions as a regeneration board, its Board Mode needs to be set to Electrical Relay Mode (in an OSN 8800 platform subrack or OSN 8800 UPS subrack) or Optical Relay Mode (in a subrack of another type). TN53NQ2 can be interconnected with TN13LSX. When TN53NQ2 is interconnected with a TN12LSX or TN11LSX board, its FEC Mode must be set to FEC.

Whether LOG and TOG can be interconnected with each other
No, they cannot.

Whether TN11LSX and TN12LSX can be interconnected with TN53NQ2
TN53NQ2 can function as the regeneration board for TN11LSX and TN12LSX.To implement the interconnection, the FEC mode of TN53NQ2 must be set to FEC.

Whether SC2 boards can be connected to boards of other vendors
SC2 boards support transparent transmission of DCC bytes and do not support interconnection with boards of other vendors. The rate and code of monitoring signals on an SC2 board are 16M and CMI respectively.

Interconnections between SC2 boards and similar boards of other vendors
SC2 boards support transparent transmission of DCC bytes and do not support interconnection. The rate and code of monitoring signals on an SC2 board are 16M and CMI respectively.

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