Yealink SIP-T48G Administrator's Manual page 776

Administrator's Guide for SIP-T2 Series/T19(P) E2/T4 Series/CP860 IP Phones
For example, the IP address of your syslog server is 192.168.1.100.
4. Click Confirm to accept the change.
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.
5. Click OK to reboot the phone.
The system log will be exported successfully to the desired syslog server
(192.168.1.100) after a reboot.
6. Reproduce the issue.
To view the log file on your syslog server:
You can view the system log file in the desired folder on the syslog server. The location
of the folder may differ from the syslog server. For more information, refer to the network
resources.
The following figure shows a portion of the system log:
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