data-wiringtelephone
I'm in the process of removing an old telephone jack that has wiring running along the wall. The jack is easily removed, but I'm unclear on what to do with the wiring. It seems short sighted and foolish to just snip it off.
On the other hand, the wire seems to lead into the crawlspace below the house, and I'd rather not go under if I can avoid it.
STP should help. Just make sure to ground it properly, or the interference can be worse - like a long antenna.
Couple problems I see. First is the textured ceiling. You'll never be able to open that up and patch it without being obvious, the texture is something that just isn't done these days. Second, the exterior wall should have insulation in it, so you'll end up fishing the line through insulation and the vapor barrier.
Instead, I'd suggest running the line around the floor if you can get it to a convenient wall anywhere in that room. Use some fasteners to keep the cable at the base of the wall to run it around the room:
Best Answer
If you are removing it, remove it.
It's only "short-sighted" if you have any conception that you might want a landline phone there.
You MIGHT be able (depending on how snug it is, and how many layers of paint are on the cable making it fatter) to just stuff the (uncut) cable down the hole in the floor once you have it unstapled.
But simply snipping it off is perfectly reasonable under the "you never envision a landline in that location, or perhaps anywhere in your house, again" premise.