DCM/DCU connection on a line

7

If only OBU is configured on the line, connect the DCM/DCU between a variable optical attenuator and the OBU.
If only OAU is configured on the line, connect the DCM/DCU between the TDC and RDC ports on the OAU.
If both OAU and OBU are configured on the line, connect the DCM/DCU between the two OA boards.

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