Looks like what I needed was in this log file: \[system_logs].tar.gz\[system_logs].tar\var\log\rsyslog\127.0.0.1\[Date]\ipowebmanager_audit.log That at least tells me times that users logged in.
Avaya says this:
By default, IPO logs to internal syslog some details about the changes (Check IPO
config -> System ->System events -> Alarms tab ).
- Extended Audit Configuration change information- each message contains one
configuration or
security settings object attribute change, and optionally the previous and
new values. These can be viewed in web control -> Logs -> Syslog Event viewer ->
Event type: Audit.
Perhaps the best way is to pull them from system alarms with some logging software.