Standard EIA /TIA 568 A EIA /TIA 568 B, USOC, RJ45 Pinout Wiring Diagram

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

--------------------------------------------------------------------------------

Subject: 10.0 Birds and Bees (Plugs vs. Jacks)

The EIA/TIA specifies an RJ-45 (ISO 8877) connector for Unshielded
     Twisted Pair (UTP) cable.  The plug is the male component crimped
     on the end of the cable while the jack is the female component in
     a wall plate or patch panel, etc.  Here is the pin numbering to
     answer the question, where is pin one?

Plug                          Jack
  (Looking at connector          (Looking at cavity
   end with the cable             in the wall)
   running away from you)

---------- /                   ----------
     | 87654321 |                   | 12345678 |
     |__      __|/                  |/_      /_|
        |____|                         |/___|