With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
csbHistoryStatsImsRxCallSetupFailures
Cisco Session Border History Stats Ims Rx Call Setup Failures
1.3.6.1.4.1.9.9.657.1.4.1.29
This object indicates the total call setup failures owing to IMS Rx failure during this interval.
Back to CISCO-SESS-BORDER-CTRLR-CALL-STATS-MIB MIB page.
IPHost Network monitor allows you to monitor csbHistoryStatsImsRxCallSetupFailures 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.