Spec Drawing
Reverse wiring is generally used for voice application.
28AWG (CCA), silver satin jacket
Terminated with RJ12 (6P6C) plug on both end
6 conductor reverse wiring
pin1 --- pin6 (white)
pin2 --- pin5 (black)
pin3 --- pin4 (red)
pin4 --- pin3 (green)
pin5 --- pin2 (yellow)
pin6 --- pin1 (blue)