With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppGblHisIPOutCallTotConn
Cisco Call Applications Application Global History IP Out Call Total Connection
1.3.6.1.4.1.9.9.146.1.5.31
Total number of IP placed call legs connected to this gateway.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppGblHisIPOutCallTotConn on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.