With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmqVoIPCallActiveRxPred107DefaultR0
cmq Voice IP Call Active Rx Pred107 Default R0
1.3.6.1.4.1.9.9.769.1.1.1.1.34
R0 is a factor based on signal-to-noise ratio which also includes loudness ratings.
Back to CISCO-MEDIA-QUALITY-MIB MIB page.
IPHost Network monitor allows you to monitor cmqVoIPCallActiveRxPred107DefaultR0 on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco mobile switches right now.