Step 1
Unplug the power cable from the phone and then plug it back in.
The phone begins its power up cycle.
Step 2
Immediately press and hold # while the Headset, Mute, and Speaker buttons turn
on and off in sequence.
Release # after the Speaker button turns off.
the phones lights should be on and off.
Step 3
Press 123456789*0# within 60 seconds after the Headset, Mute, and Speaker
buttons begin to flash.
If you repeat a key within the sequence (for example, if you press
1223456789*0#), the sequence will still be accepted and the phone will reset.