Get a filtered set of the TPs and their associated distinguishing information that are at the edge of the Subnetwork that contain one or more of the NMS-specified TP layer rates and that are capable of containing CTPs that can be connected at one or more of the NMS-specified connection layer rates. This operation considers the capability/flexibility of the PTPs, not their current states. 

Operation Exceptions:
1. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
2. INVALID_INPUT - Raised when tpLayerRates or connectionLayerRates contain undefined values.
3. NE_COMM_LOSS - Raised when communication to managed element is lost.
