With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cbQosIPHCRtpSentByte64
Cisco Class Based Qos IPHC Rtp Sent Byte64
1.3.6.1.4.1.9.9.166.1.23.1.1.12
The 64 bits count of outbound UDP/RTP bytes.
Back to CISCO-CLASS-BASED-QOS-MIB MIB page.
IPHost Network monitor allows you to monitor cbQosIPHCRtpSentByte64 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.