Call forwarding numbers

[Vetteman72]

I have tried to set up my call forwarding number to my cell phone, and when I type in my cell phone number, it says it's already in use by someone else.
Seems awfully strange until I saw that there are also forums here for the bud phone, which I also have installed, so I have a feeling that this is the problem.
Can someone confirm that the bud phone and fongo/dell voice use the same settings which is preventing my from adding my current cell phone number to my dell voice since it's already setup with bud phone?