Here's how to set up forwarding to your cell phone (or any other number) from the desk phone:

1. Press the "features" softkey (below bottom right corner of screen)

2. Press down arrow until "forward" is highlighted and press OK

3. Press down arrow to highlight "Forward Unconditional" and Press OK

4. Press "On" softkey - this turns forwarding on

5. Press down arrow to highlight "Destination"

6. Press "Edit" softkey

7. Press "Clear" softkey - this clears out the existing forwarding phone number

8. Use numeric keypad to enter phone number to which calls should be forwarded (9+area code+number)

9. Press "Select" softkey

10. At this screen, confirm that forward is set to "on" and that the phone number is correct.

11. Press "Save" softkey. Forward is now turned on and you'll be returned to the home screen. 

Here are the steps to turn forwarding off:

1. Press "features" softkey (below right corner of screen)
2. Press down arrow to Forward
3. Press OK
4. Press down arrow to Forward Unconditional
5. Press OK
6. Press "Off" softkey
7. Press "Save" softkey