With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmeEphoneUnRegThreshold
Cisco Call Manager Express Ephone Un Registration Threshold
1.3.6.1.4.1.9.9.439.1.1.51
This variable sets the threshold to limit the unregistration trap notification.
Back to CISCO-CCME-MIB MIB page.
IPHost Network monitor allows you to monitor ccmeEphoneUnRegThreshold on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.