Use this standard 25 Foot line cord for connection your telephone lines to your X16, Panasonic, Syspine, Aastra or Allworx phone system. This may also be used to replace a worn cord on any standard telephone using 4 wires or less.
28AWG, silver satin jacket
Terminated with RJ11 (6P4C) plug on both end
4 conductor reverse wiring
pin1 -- pin4 (black)
pin2 -- pin3 (red)
pin3 -- pin2 (green)
pin4 -- pin1 (yellow)
Reverse wiring is generally used for voice application.