With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csbHistoryStatsCallSetupNAPolicyFailure
Cisco Session Border History Stats Call Setup NA Policy Failure
1.3.6.1.4.1.9.9.657.1.4.1.13
This object indicates the number of call setup failures due to NA policy failure during this interval.
Back to CISCO-SESS-BORDER-CTRLR-CALL-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor csbHistoryStatsCallSetupNAPolicyFailure 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.