PHONE JACK WIRING CAT 3
How to Match Cat 3 Wire to a Phone Jack | Techwalla
Cat 3, or Category 3, wiring is useful for wiring small networks, telephones and dial-up Internet connections. It is a less expensive choice than Cat 5 wiring, which is appealing on a budget. Many older homes are also already wired with Cat 3, and if you need to add additional phone jacks, you can maintain the same standard.
How to Wire a Telephone Jack - The Spruce
Old phone cable typically has four wires inside: red, green, black and yellow. If you're extending a line to a room or other part of the house, you can use this type of cable, or you can use Category 3 or 5 (Cat-3 or Cat-5) data cable, which also has multiple wires but with a different color scheme. Category cable works just as well as the old cable for phone service, and it works much betterAuthor: Timothy Thiele