How to factory reset Cisco CP-7911G VoIP phone
A. Factory reset
1. Power off
2. Hold " # " button + power on.
3. Blinking RED on handset
4. Release " # " button
5. Enter " 1 2 3 4 5 6 7 8 9 * 0 #
* Above procesure can be used when you upgrade or downgrade F/W.
B. To enter edit mode : Enter * * # on edit item.
* For the CP-7961, Blinking Amber on dial buttons.