So, I don't really do any data or phone cable, but I have a customer that needs a phone jack for DSL on the second floor. I intended to use outdoor or direct burial cat 3 or 5 strapped to the side of the house and up to the bedroom. When I went to order the cable, I stumbled across a credible-sounding guy on a networking forum saying it was very dangerous and against code. Is there a code issue with running this cable on the outside of the building I don't know about?