With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cSipStatsTrafficInviteOuts
Cisco Sip Stats Traffic Invite Outs
1.3.6.1.4.1.9.9.152.1.2.7.2
This object reflects the total number of INVITE requests sent by the user agent.
Back to CISCO-SIP-UA-MIB MIB page.
IPHost Network monitor allows you to monitor cSipStatsTrafficInviteOuts 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.
