User Guide

Troubleshooting
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4. Click OK to confirm upgrading.
T48G Skype for Business phone can be also upgraded from the Skype for Business Server. For
more information on how to upgrade the T48G Skype for Business phone from the Skype for
Business Server, refer to Updating Phone Firmware from Microsoft Skype for Busniness Server .
How to reset the phone?
Reset the phone to factory configurations after you have tried almost all troubleshooting
suggestions but do not solve the problem.
Three ways to reset the phone:
 Full Reset: All configurations and userdata on the phone will be reset.
 Configuration Reset: All configurations (e.g., account, call history) set on the phone will
be reset.
 Userdata Reset: All custom data (e.g., ring tone) set on the phone will be reset.
Contact your system administrator before resetting the phone.
To reset the phone via phone user interface:
1. Tap ->Advanced (default password: admin) ->Reset to Factory.
2. Select the desired reset option from the pull-down list of Reset Option.
3. Tap the Reset key.