This operation allows an NMS to request a list of the SNC names using the specified termination point at the specified connection rates. 
A SNC is using the specified TP if any of its routes, intended and/or backup, in any state, use this TP.
A TP may be a PTP in which case a full list of SNCs using any of its contained CTPs is required. A TP may be a CTP, in which case only 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 the names of the 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 SNC names 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 SNC names that use the provided GTP as either an end point or an interior point.

Operation Exceptions:
1. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
2. INVALID_INPUT - Raised when tpName does not reference a terminationPoint object or connectionRates
    contains undefined values.
3. ENTITY_NOT_FOUND - Raised when tpName references an object that does not exist.
4. NE_COMM_LOSS - Raised when communication to managed element is lost.
