A user of our system likes to forward his phone to his cell phone using Feature 4. When certain people try to call the office and should be redirected to his cell phone, they get an error message about no lines available, or no outgoing line available (he doesn't hear the error, and i guess the people who complain don't remember either). I've tried to recreate the problem, and I have been unable to. However, the problem does seem to happen with long distance cell phone calls. Any ideas where the problem might lie? In the T-1, the phone system, either of the cell phones?