With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmqVoiceCallActiveGroup
cmq Voice Call Active Group
1.3.6.1.4.1.9.9.769.2.2.1
The collection of objects that provide voice quality statistics for active voice calls.
Back to CISCO-MEDIA-QUALITY-MIB MIB page.
IPHost Network monitor allows you to monitor cmqVoiceCallActiveGroup 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.