When I worked @ NAP I used my headphones, cellphone, SAT radio, DVD player, TV, two way...anything to get me through the night. I know a guy who had a whole entertain system on the line. He had a 19" flat screen LCD with surround speakers and subwoofer.
Management didn't care unless we weren't hitting our numbers or sending junk down the line, but @ NAP we could build a truck in our sleep with no defects. :reading: