Factory reset your Yealink T46S

  • Hold the "OK" button down for 10 seconds or until prompted to initiate factory reset

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  • Confirm the reset via the softkeys.
  • Allow unit to reboot then enter the last 5 digits of the serial number located on the back of the phone. 

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  • Allow the unit to reboot and factory reset

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Once Completed the unit will be reset and will attempt to obtain its new configuration (as long as it is connected to a working connection).