How To Install A Phone Jack Video
There are modular phone jacks boxes available to handle up to 6 lines. Each line requires a pair of wires. If your existing phone wiring only has four wires, that is a maximum of two phone lines. Some phone cable has eight wires, or four pairs for four phone lines or circuits. Just snap in the correct number of phone outlets you require. The phone wires just snap into place on the back side of the phone jacks.
Using the right modular equipment makes phone jack wiring a simple, neat job.