With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ciscoTpCallMgmtSysConnEventHistGroup
cisco Tp Call Mgmt Sys Connection Event Hist Group
1.3.6.1.4.1.9.9.644.2.2.6
A collection of objects providing call management system connection changes event information.
Back to CISCO-TELEPRESENCE-CALL-MIB MIB page.
IPHost Network monitor allows you to monitor ciscoTpCallMgmtSysConnEventHistGroup on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.