With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
appnIsRtpTable
appn Is Rtp Table
1.3.6.1.2.1.34.4.1.6.3
A table indicating how many ISR sessions are transported by each RTP connection.
Back to APPN-MIB MIB page.
IPHost Network monitor allows you to monitor appnIsRtpTable 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.
