Hi all, I’m trying to run a Ethernet cable to my home office in a house built in the 60s. This connection is unlabeled and I’m not sure what it is. Can I somehow replace it with an Ethernet cable? I’m new to all of this and did some poking around in the sub but I’m not really sure what I’m looking at or what I’m in for. I don’t have any coaxial cables that I can utilize (unless they are hidden behind a wall? Any easy way to find those?). Thank you.
Looks very much like CAT3 Cable, 25 Pair, UTP.
Little high on that pair count, look again. 😉
Other pairs might still be hidden in the wall.
This isn’t an office building, and nobody “hid extra pairs in the wall” for good reason. This wiring is a very specific technique used to quickly feed phone pairs in new SFH and apartment buildings of a certain era when the minor CAPEX advantage of a single shared cable over home runs was sold to developers as a cost cutting measure (or just done anyway to pad wallets when home runs were specified).
You’re definitely right that it uses standard 25-pair color code, but it’s just a six pair residential run here: white from blue to slate, and red-blue.