With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppGblHisPSTNInCallSetupInd
Cisco Call Applications Application Global History PSTN In Call Setup Ind
1.3.6.1.4.1.9.9.146.1.5.3
Total number of setup indications received by this gateway from the PSTN.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppGblHisPSTNInCallSetupInd on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.