With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmeLoopbackDnTag
Cisco Call Manager Express Loopback Dn Tag
1.3.6.1.4.1.9.9.439.1.1.61.1.1
A unique sequence number that identifies the ephone-dn loopback pairs in this device.
Back to CISCO-CCME-MIB MIB page.
IPHost Network monitor allows you to monitor ccmeLoopbackDnTag 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.