Yealink SIP-T48S, User Manual, Page: 154 / 159

Yealink T4 Series IP Phones User Guide
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4. Press Back to go back to the preview screen.
Rebooting Your Phone
The improper operation may cause malfunction. If malfunction occurs, your system administrator may ask you to
reboot your phone.
Procedure
1. Navigate to Menu -> Basic -> Reboot .
On the SIP-T42S/T42G/T41S/T41P/T40P/T40G IP phone, navigate to Menu -> Settings -> Basic Settings -> Reboot .
A confirmation message is displayed, confirming that you want to reboot the phone.
2. Press OK to reboot the phone.
Tip
You can also long press the X key when the phone is idle to reboot the phone.
Resetting to Factory Settings
Generally, some common issues may occur while using the IP phone. Your system administrator may ask you to reset
your phone to factory configurations after you have tried all troubleshooting suggestions but still do not solve the
problem. 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 fact-
ory settings.
Procedure
1. Navigate to Menu -> Advanced -> Reset Config .
On the SIP-T42S/T42G/T41S/T41P/T40P/T40G IP phone, navigate to Menu -> Settings -> Advanced Settings -> Reset
Config .
2. Highlight the Reset to Factory Settings , and then press Reset .
A confirmation message is displayed, confirming that you want to reset the setting.
3. Press OK .
The phone begins resetting.
Tip
You can also long press the OK key when the phone is idle.
After reset, the LCD screen prompts “Welcome Initializing…Please wait”.