With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csbCallStatsRTPPktsDiscard
Cisco Session Border Call Stats RTP Packets Discard
1.3.6.1.4.1.9.9.657.1.2.1.17
This object indicates the total number of RTP packets discarded.
Back to CISCO-SESS-BORDER-CTRLR-CALL-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor csbCallStatsRTPPktsDiscard on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.