With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmqVoIPCallHistoryRxUnimpairedSecOK
cmq Voice IP Call History Rx Unimpaired Sec OK
1.3.6.1.4.1.9.9.769.1.2.1.1.17
The cumulative number of seconds during which there was no concealment and is considered as OK seconds.
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IPHost Network monitor allows you to monitor cmqVoIPCallHistoryRxUnimpairedSecOK 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.