This post is to outline the logging/tracing items for a MS Teams environment, most of the tracing will be from the Teams Client/Web App/etc.
It will hopefully be a "living" post that is updated when I find new things.
First Step - Get log files from the Client:
Teams Client, right click the icon in the task bar and select "Collect support files"
Time stamps in the log files are in epoch time:
What is epoch time?
The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970
"MSTeams Diagnostics Log <date><time>_calling.txt" has calls made received:
Time of call details:
State : 0 (Call Made)
State : 2
State : 9 (Ringing)
State : 3 (Call Answered)
State : 6 (Hang Up)
State : 7 (Call Cleared)
If anyone know what the exact state are, please drop a not in the comments, as this is what I have seen from making calls.
"MSTeams Diagnostics Log <date><time>.txt"
Phone number normalisation
The line above show that rule 4 of 11 was used to normalise the number via first the tenant dial-plan, then the global (AU) dial-plan. The global (AU) dial-plan has three (3) entries, in the example above the tenant dial-plan has eight (8) entries.