Performs a specified protection command or clears all outstanding persistent protection commands.
For 4-fiber SONET/SDH SPRINGS, the span switch is performed on the MSP_1_FOR_N protection group, and the ring switch on the 4_FIBER_BLSR group.
A Protection Switch notification is sent to the NMS.

Operation Exceptions:
1. NOT_IMPLEMENTED - Raised when an EMS is unable to support this operation.
2. INTERNAL_ERROR - Raised in case of non-specific EMS internal failure.
3. INVALID_INPUT - Raised when fromTPName or toTPName reference objects of the correct type, but that are invalid
    in the context of this operation (e.g. the referrenced TPs are not memebers of the Protection Group).
4. ENTITY_NOT_FOUND - Raised when fromTPName or toTPName references a CTP/FTP object that does not exist.
5. UNABLE_TO_COMPLY - Raised if the EMS is unable to perform the operation.
6. NE_COMM_LOSS - Raised when communication to the  managed element is lost.
