With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvCommonDcCallHistoryVADEnable
Cisco Voice Common Dc Call History VAD Enable
1.3.6.1.4.1.9.10.55.1.2.1.1.2
The object indicates whether or not the VAD (Voice Activity Detection) was enabled for the voice call.
Back to CISCO-VOICE-COMMON-DIAL-CONTROL-MIB MIB page.
IPHost Network monitor allows you to monitor cvCommonDcCallHistoryVADEnable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.