You can use SysMonitor for troubleshooting.

Connection Status

Supporting MS Teams uses 2 TLS sockets between ASBCE and IP Office. You can check these in the SIP TCP Users status menu (Status > SIP Tcp User Data...).

If there are not 2 TCP sockets to the ASBCE IP address, the most likely cause is a certificate issue between ASBCE and IP Office.

User Status

You can check the configuration of individual users using SIP Phone Status menu (Status > SIP Phone Status).

Tracing Calls

To escalate issues to Avaya, you will require SysMonitor traces. You should generate these using the default filters plus, enable SIP and Verbose for the Filters > Trace Options > SIP tab. For call related issues, ASBCE traces for the same event/time period are also required, see ASBCE SIP Tracing.