Yealink SIP-T22 - Manual (Page 137)

Troubleshooting
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5. Click Export to open file download window, and then save the file to your local
system.
How to export system log?
We may need you to provide a system log to help analyze your problem.
To export a system log via web user interface:
1. Click on Settings->Configuration.
2. Select 6 from the pull-down list of System Log Level.
3. Click Confirm to accept the change.
The web user interface prompts “Do you want to restart your machine?”. The
configuration will take effect after reboot.
4. Click OK to reboot the phone.
After rebooting the phone, the system log level is set as 6, the debug level.
5. Mark the Local radio box in the Export System Log field.
6. Click Export to open file download window, and then save the file to your local
system.