Remove the network cable from the phone for 30 seconds so the phone goes off this will be indicated by the screen going blank
1. Press and hold "#" when you plug the network cable back into the phone
2. You will see the headset, speaker and mute will light on and then light off.
3. When you see only headset and speaker turn on again, please press 123456789*0# in sequence.
4. After you pressed the the first digit "1", you will see speaker turn off.
5. After all the number are input completely in sequence, you will see Mute button turns on to indicate phone begin to do the factory reset.