How do you default a Yealink without the password

[PhoneboothCommunity]

I need to reconfigure my Yealink with Phonebooth.com service.  What are the steps to default my phone if I do not have the password?

[PBGuru]

1. Power on the phone.
2. Wait until the “Idle” screen is visible.
3. Hold down the “OK” button until the message “Reset to factory settings?” appears.
4. Press “OK” or “Yes” “REDIAL key” (if Android phone) depending on the model.
5. Your phone has been successfully reset.