3.1.2.10 ReceiveSymmetricKeyCache Cleanup Timer

This timer regulates the amount of time that the protocol waits before removing expired entries from the ReceiveSymmetricKeyCache ADM element. This timer is set either when a CachedSymmetricKey (section 3.1.1.3.3) ADM element instance is added to the ReceiveSymmetricKeyCache ADM element, as specified in section 3.1.5.8.3, or when the ReceiveSymmetricKeyCache Cleanup Timer Event (section 3.1.6.10) is processed.