Yealink SIP-T20 User Manual page 117

4. Click O K to confirm upgrading.
How t o reset t he phone?
Reset the phone when other troubleshooting suggestions do not correct the problem.
You need to note that all customized settings will be overwritten after resetting. So we
recommend asking your system administrator for advice before resetting the phone.
To reset the phone via phone user interface:
1. Press
2. Select Se ttings->Advanced (password: admin).
3. Press
The LCD screen prompts ‖Reset To Factory?‖.
4. Press
The LCD screen prompts ―Please wait Reset...‖.
The LCD screen prompts ―Initializing Please wait‖.
The phone will be reset to factory sucessfully after startup.
Not e
Reset of the phone may take a few minutes. Do not power off until the phone starts up
successfully.
.
or to scroll to Re s et Factory, and then press
Reset To Factory?
to confirm.
Please wait
Reset...
Initializing
Please wait
Troubleshooting
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