I am on an office plan. I have a shared line at my regular office and my home office (same phone number) but want my cell phone to ring as well (all three phones ringing) on an incoming call. I am usually in the field, but reception in front of my computers is weak, so I want to use the desk phones. I imagine it's a small tweak to allow for a cell phone to ring with the shared lines, as this works on normal lines. Not sure why a shared line feature complicates this and takes away the cell phone ringing feature. I just signed up and it seems I'll have to cancel it all unless I can get this working. I was told this would work by multiple reps, but after a lengthy setup process (11 hours and counting of time on the phone, it still is not up and running and they suggested I post here). Help!