Get a filtered set of fixed Subnetwork Connections contained within the Subnetwork and their associated distinguishing information.
This operation also returns bundled SNCs, if any.

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. INVALID_INPUT - Raised when input parameter is syntactically incorrect.
4. NE_COMM_LOSS - Raised when communication to managed element is lost.
