The operation is used to retrieve fixed multiplexing and fixed inverse multiplexing schemes.
If the provided TP may be or is involved in a multiplexing or inverse multiplexing scheme, it will report:
1) the TP containing the fixed layer
2) the list of potential fixed cross connects that will exist if the containing TP's clientConnectivity or serverConnectivity is set to "Connected" (i.e. if the containing TP is currently multiplexing or inverse multiplexing). 
If the clientConnectivity (resp. serverConnectivity) of the TP is currently set to "Connected", the potentialCCList matches the list of active fixed cross connects that are involved in its client TPs (resp. server TPs).
If the TP client layer (resp. server layer) is always fixed cross connected (hard-wired), the potentialCCList always matches the list of active fixed cross connects that are involved in the client TPs (resp. server TPs).

Operation Exceptions:
1. NOT_IMPLEMENTED - Raised when EMS does not support this operation.
2. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
3. UNABLE_TO_COMPLY - Raised when TP is neither a higher order TP that supports fixed multiplexing
    nor a lower order TP that supports fixed inverse multiplexing.
4. NE_COMM_LOSS - Raised when communication to managed element is lost.
