With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmTLSConnFailTime
Cisco Call Manager TLS Connection Fail Time
1.3.6.1.4.1.9.9.156.1.10.26
The time when TLS connection failure was detected by the local call manager.
Back to CISCO-CCM-MIB MIB page.
IPHost Network monitor allows you to monitor ccmTLSConnFailTime 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.
