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Yealink T4U Series IP Phones User Guide
114
3. Enter valid provisioning credentials, and select Save.
The phone prompts you to provision now or not.
4. Select OK.
Clearing Warnings
For the T42U phones, you can temporarily remove the warning message from the idle screen; for other phones, you
can temporarily remove the warning icon from the status bar. You can temporarily remove the warning icon from the
status bar.
However, the warning icon/message appears again after the phone reboots or the phone has a new warning if the
issue is not solved.
Procedure
1. Go to Menu >Status >Warnings.
2. Select Clear Icon.
Diagnosing the Network
When network problems occur on your phone, you can use the "ping" or "trace route" method to troubleshoot net-
work connectivity problems.
Procedure
1. Go to Menu >Features >Diagnostics >Network.
2. Do one of the following:
lSelect Ping, then enter the desired IP address or URL in the Ping IP or URL field.
lSelect Trace Route, then enter the desired IP address or URL in the Trace Route IP or URL field.
3. Select Start.
The screen displays the network status information.
Rebooting Your Phone
The improper operation may cause malfunction. If the malfunction occurs, your system administrator may ask you to
reboot your phone.
Procedure
1. Go to Menu >Basic >Reboot.
On the T43U/T42U phones, go to Menu >Settings >Basic Settings >Reboot.
The phone prompts you to reboot the phone or not.
2. Select OK.
Tip: You can also long press the Cancel key on the keypad when the phone is idle to reboot the phone.
Resetting to Factory Settings
When some issues occur on your phone and you have tried all troubleshooting suggestions but still do not solve
the problem, you can reset your phone to factory configurations.
This operation will delete all your personal configuration settings, and reset all settings to the factory defaults.
Check with your system administrator if the personalized settings are kept before resetting your phone to factory set-
tings.
Procedure
1. Go to Menu >Advanced (default password: admin) > Reset Config.
115


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