With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppInstHisPSTNInCallHandOutRet
Cisco Call Applications Application Instance History PSTN In Call Hand Out Returned
1.3.6.1.4.1.9.9.146.1.3.3.1.7
Total number of incoming PSTN call legs that were handed out with call back to another application, returned back to this instance.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppInstHisPSTNInCallHandOutRet on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.