This operation is used to retrieve the names of the "in use" CTPs that are contained within a specific PTP or CTP, at specific layer rates. An "in use" CTP is defined as a CTP that is used by an SNC in any state (including pending), either as a CM end point or as an intermediate connection point, or a CTP that is terminated and mapped. This operation will be used when there are a large number of potential CTPs (e.g., in ATM).
Examples for contained InUse TPs in different states of usage are contained in the associated supporting document ContainedTPs.

Operation Exceptions:
1. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
2. INVALID_INPUT - Raised when layerRateList contains undefined rates.
3. NE_COMM_LOSS - Raised when communication to managed element is lost.
