With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppGblHisIPInCallHandedOut
Cisco Call Applications Application Global History IP In Call Handed Out
1.3.6.1.4.1.9.9.146.1.5.23
Total number of incoming IP call legs that are handed out to another gateway because of application handoff operation.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppGblHisIPInCallHandedOut 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.