The Status menu shows how the PBX is doing right now and what has happened: which phones and providers are registered, which calls are running, how busy the system is, what the logs say and who changed what. Nothing on these pages changes the configuration, so you can look around safely.
When something does not work, these pages are the first place to look; see also Troubleshooting.
Summary
The start page: notices, key figures, system information, telephony status and graphs.
Calls & Registrations
Live state of Asterisk, provider and phone registrations, and the calls in progress.
Graphs
Live graphs of CPU usage and network traffic.
Logs
The Asterisk, system, web application and monitor logs, followed live.
Audit Log
Who changed what and when: every configuration change and administrative action.