Why 4

: The original post was interesting. I've never seen two wire telephone: cable. The smallest I've seen is two pair ( 4 wire). Yup. There are several manufacturers who ship 2-wire RJ-11 cords with their gear, which really screws those of us who only need 1 line of answering machine in front of our 2 line phone. Of course, most of the

In older telephone installations, the 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 newer Category 3 or 5 (Cat-3 or Cat-5) data cable, which also has multiple wires but with a different color scheme.

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The most common type is the 4-strand (2 twisted pair). This consists of red and green wires, which make a pair, and yellow and black wires, which make the other pair. One telephone line needs only 2 wires. Therefore it follows that a 4-strand wire can carry 2 separate phone lines.

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Place your landline phone's receiver near the telephone jack, then plug the free end of the wire into the "Line 1" port on the back of the receiver. Unless otherwise specified by your phone's manufacturer, avoid using the "Line 2" or other ports on the back of the receiver.

How to Wire a Phone Jack (Voice or Telephone RJ-11 thru RJ-14) (USOC Wiring Diagram) Telephone wiring for a phone outlet is typically either 1, 2 or 3 pairs (2, 4, or 6 conductor). Most cable nowadays is UTP (unshielded twisted pair). There may be instances where you may need to connect to or transpose from the old "quad" cable.

Avoid tight bends of less than 2-in. radius; smooth, gradual ones are best to protect the wire. Clamp cables to framing with nylon cable straps, lightly secured around the cables and screwed to the framing. Never compress, crush or deform the wire. Pull gently on cables when feeding them through holes and tight spaces.

United Kingdom internal phone systems. Re-wiring . This guide was originally created to show users how to replace and re-wire the user side internal telephone cabling with Category5e/6 cable in an attempt to reduce interference that could hinder broadband services like xDSL.. However is now updated with other tips and tricks to improve line stats further.

Wiring the Sockets Start at the last socket and finish at the Master Socket. For every cable at each socket, cut the sheath at the end of a cable about 13mm (1/2 in) with a pair of side cutters and expose the white nylon ripcord.