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Rj 25 Phone Jack Wiring. Find out information about RJ-25. Connect the CAT5 pair to the Red and Green on the standard phone jack.
When using Cat5 use the center pair BlueBlue-white in the CAT5 cable. It can be removed easily for quick re-termination. The RJ11 technically uses the center 2 contacts of 6 available and is used for wiring a single phone line.
DIY 2-Line RJ11 Triplex Phone Jack.
It is present in rear mount snap-in keystone design. The jack should have a wiring diagram or designated pin numberscolors to match up to the color code below. RJ11 is a physical interface often used for terminating single telephone lines. RJ25 uses all 6 of the available positions 6P6C and is able to connect 3 lines.