I just moved into a new house, built in the 1970s and in a lot of rooms i have plugs that look like this
From what i understand this is an old style phone line. I assume that it goes down to this box in the basement
I don't know if this is somehow still in use, but I don't plan on having a home phone so i'd rather just remove it and try to use the wires as pull strings for coax since theres no cable in a lot of the upstairs rooms. my question is, was everything still low voltage back when they used this? the wire that concerned me was the black one, but I think that might be disconnected. Outside of my home there is a severed black wire on that same side of the house that looks like a cable line. I don't really know how to test if anything on this is live or not.

From what i understand this is an old style phone line. I assume that it goes down to this box in the basement

I don't know if this is somehow still in use, but I don't plan on having a home phone so i'd rather just remove it and try to use the wires as pull strings for coax since theres no cable in a lot of the upstairs rooms. my question is, was everything still low voltage back when they used this? the wire that concerned me was the black one, but I think that might be disconnected. Outside of my home there is a severed black wire on that same side of the house that looks like a cable line. I don't really know how to test if anything on this is live or not.