Modular Plug Pair Configurations
It is important that the pairing of wires in the modular plug match the pairs in the modular jack as well as the horizontal and backbone wiring. If they do not, the data being transmitted may be paired with incompatible signals. Modular cords wired to the T568A color scheme on both ends are compatible with T568B systems and vice versa.
UTP Horizontal Cable (solid 24 AWG)