Sonictel Cloud PBX
By default, we do NOT allow for the customer to factory default their phone using the Long Press of the OK key on Yealink Phiones.
To config the phone to allow, see the following instructions.
How to factory ALLOW factory reset by long press OK key on Yealink phones template code
Paster the following code into the advanced tab on the extension
features.reset_by_long_press_enable="1"
SAVE & RESYNC.
Now the user should be able to hold down the OK key for 10 seconds and trigger a factory default

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