Yealink SIP-T2 SERIES Administrator's Manual page 968

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
Select the desired limit mode from the pull-down list of Append Limit Mode.
6.
Click Confirm to accept the change.
7.
A dialog box pops up to prompt "Warning: Some settings you changed take effect when
you restart your machine! Do you want to reboot now?". The configuration will take effect
after a reboot.
Click OK to reboot the phone.
8.
The system log will be exported successfully to the desired FTP/TFTP server after a reboot.
Reproduce the issue.
9.
To view the log file on your FTP/TFTP server:
You can view the system log file in the root directory folder you have configured on the
FTP/TFTP server.
The following figure shows a portion of a <mac>-boot.log (e.g., 0015659188f2-boot.log):
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