Get the set of fixed Subnetwork Connection(s) and their associated distinguishing information that contain the NMS-specified TP constrained by the specified connection rates.
A TP may be a PTP in which case a full list of fixed SNCs using any of its contained CTPs is required. A TP may be a CTP, in which case only fixed SNCs using that CTP or any of its contained CTPs are required.
Both end CTPs and intermediate CTPs at the same layer are considered. In all cases, only fixed SNCs that also match the specified connection rate filter are returned.
All legs of a broadcast system can be retrieved using this operation where the source TP of the broadcast system is used as input to the operation. The output will be the list of individual fixed SNCs that make up the broadcast system.
This operation also works if a GTP is supplied rather than a CTP. In this case, the layerRate is set to LR_Not_Applicable. If the GTP is part of a cross connection, the EMS returns the set of bundled SNCs that use the provided GTP as either an end point or an interior point.

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. ENTITY_NOT_FOUND - Raised when tpName references an object that does not exist.
5. NE_COMM_LOSS - Raised when communication to managed element is lost.
