Cabling

The ANSI/EIA/TIA-568-1991 Standard _Commercial Building Telecommunications Wiring Standard_ defines pinouts;

9.1 Standard EIA/TIA T568A
(also called ISDN, previously called EIA)

Pin Wire Color
=== ==========
/--T3 1 White/Green
Pair3 --R3 2 Green
/----------T2 3 White/Orange
/ /-R1 4 Blue
pair2 pair1 -T1 5 White/Blue
----------R2 6 Orange
/--T4 7 White/Brown
pair4 --R4 8 Brown


9.2 Standard EIA/TIA T568B (also called AT&T specification, previously called 258A)

/--T2 1 White/Orange
pair2 --R2 2 Orange
/----------T3 3 White/Green
/ /-R1 4 Blue
pair3 pair1 -T1 5 White/Blue
----------R3 6 Green
/--T4 7 White/Brown
pair4 --R4 8 Brown


9.3 USOC (Universal Service Order Code)

8-pins 6-pins
| |
/-------------T4 1 White/Brown
/ /---------T3 2 1 White/Green
/ / /-----T2 3 2 White/Orange
/ / / /-R1 4 3 Blue
pr4 pr3 pr2 pr1-T1 5 4 White/Blue
-----R2 6 5 Orange
---------R3 7 6 Green
-------------R4 8 Brown