If you have a Cisco IP Phone and need to remove line's 1 and/or 2, you will have to reset the phone in order to do so. To reset your Cisco IP Phone 7940 Series follow these steps:
- Plug it in
- Hold down # key
- Screen will say Reset Key Sequence Detected, you will see the Headset, Mute, and Speaker buttons blinking
- Then click the following buttons sequentially; 1, 2, 3, 4, 5, 6, 7, 8, 9, *, 0, #
- Then the phone will ask you if you want to save the Network Configuration, click No.
- You will then see the phone begin to reset to factory settings.