With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmConnectionCallManagerName
cm Connection Call Manager Name
1.3.6.1.4.1.7505.1.1.16.1.3
The host name, if known, of the CallManager to which this connection refers.
Back to CALISTA-DPA-MIB MIB page.
IPHost Network monitor allows you to monitor cmConnectionCallManagerName 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.