Simple problem but can't seem to find a solution. We have a few fax machines throughout the company here and one of them (I've tested a few but not all and the ones I've tested worked fine) will dial out to a number I specify to send a fax to but after a few seconds after dialing, it rings busy, no matter what number I put in. It's a print/copy/fax combo printer. I've tested various other things with the printer but the only thing that seems to be wrong is sending out a fax. I'd really like to avoid the phone line cable because it runs across the room (pretty small room) but then runs up into the ceiling. Any ideas or solutions?