With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
vismSvcTxCallProcs
vism Svc Tx Call Procs
1.3.6.1.4.1.351.110.5.5.10.3
This is the number of Call proceeding messages sent to the PXM from the VISM since VISM reset.
Back to CISCO-VISM-SVC-MIB MIB page.
IPHost Network monitor allows you to monitor vismSvcTxCallProcs 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.
