http://youtu.be/KwfjX_C1fiY its hard to believe thats real and that they could fix that shit like that. What it doesn't mention in this video tho is that they actually had to rip some shit out and redo it cuz it was so old that there were just handwritten labels on some cables that were barely legible and there was no one alive that remembered where those cables went.
once worked for AT&T in the phone building where all the wires go. nice phone wire spools made good for model rockets.
It also works well for remote detonation....unwind a couple hundred feet and then stick a 9v battery across it