With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmqVoIPCallActiveTxTmrCallDur
cmq Voice IP Call Active Tx Tmr Call Dur
1.3.6.1.4.1.9.9.769.1.1.1.1.47
Duration of transmit path open from this peer to voice gateway for the call leg.
Back to CISCO-MEDIA-QUALITY-MIB MIB page.
IPHost Network monitor allows you to monitor cmqVoIPCallActiveTxTmrCallDur 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.