Yealink VC400 Administrator's Manual page 275

Mark the Local radio box In the Export System Log field.
2.
Click Export to open the file download window, and then save the file to your local system.
3.
The following figure shows a portion of a log file:
To export a log file to a syslog server via web user interface:
Click on Setting->Configuration.
1.
Mark the Server radio box in the Export System Log field.
2.
Troubleshooting
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