3.1.2.13 UserCertCache Cleanup Timer

This timer regulates the amount of time that the protocol waits before removing expired CachedUserCert (section 3.1.1.3.4) ADM element instances from the UserCertCache ADM element. This timer is set either when a CachedUserCert ADM element instance is added to the UserCertCache ADM element, as specified in section 3.1.5.8.3, or when the UserCertCache Cleanup Timer Event (section 3.1.6.13) is processed.