call forwarding

[spaceprobe]

hi,

I have been trying to set up call forwarding to my cell phone. However, when I try calling my fongo number with it forwarded....it gives me the message "the cellular number you have called is not assigned, please try your call again". I call my cell line directly and it works. I disable call forwarding and my fongo line works. However, forwarding my call give that message. The strange thing is that it doesn't always give that message. The call does go through occasionally.

Please help.