With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csbCallStatsRTPOctetsSent
Cisco Session Border Call Stats RTP Octets Sent
1.3.6.1.4.1.9.9.657.1.2.1.18
This object indicates the number of RTP octets sent by the SBC.
Back to CISCO-SESS-BORDER-CTRLR-CALL-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor csbCallStatsRTPOctetsSent on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.