With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccmTLSConnectionFailReasonCode
Cisco Call Manager TLS Connection Fail Reason Code
1.3.6.1.4.1.9.9.156.1.10.27
The reason for connection failure.
Back to CISCO-CCM-MIB MIB page.
IPHost Network monitor allows you to monitor ccmTLSConnectionFailReasonCode 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.