Pinouts and Colour Codes  

TIA Outlet Colour Codes

USOC RJ61

Pin #

T568A

T568B

USOC

1

White/Green

White/Orange

White/ Brown

2

Green /White

Orange /White

White/ Green

3

White/Orange

White/ Green

White/ Orange

4

Blue /White

Blue/White

Blue /White

5

White/ Blue

White/ Blue

White/ Blue

6

Orange /White

Green /White

Orange /White

7

White/ Brown

White/Brown

Green /White

8

Brown /White

Brown /White

Brown /White

Application Wiring Schemes

Pin #

Voice

10/100-Base-T

Token Ring

1

 

Transmit +

 

2

 

Transmit -

 

3

 

Receive +

Transmit +

4

B

 

Receive -

5

A

 

Receive +

6

 

Receive -

Transmit -

7

 

 

 

8

 

 

 

 

10/100- Base-T Crossover Cable

Signal A

Pin A

Signal B

Pin B

Transmit +

1

Receive +

3

Transmit -

2

Receive -

6

Receive +

3

Transmit +

1

Receive -

6

Transmit -

2

  

100- Base-T4 Crossover Cable

Signal A

Pin A

Signal B

Pin B

Tx_D1 +

1

Rx_D2 +

3

Tx_D1 -

2

Rx_D2 -

6

Rx_D2 +

3

Tx_D1 +

1

Rx_D2 -

6

Tx_D1 -

2

Bi_D3 +

4

Bi_D4 +

7

Bi_D3 -

5

Bi_D4 -

8

Bi_D4 +

7

Bi_D3 +

4

Bi_D4 -

8

Bi_D3 -

5

   

Wire Colour Codes

North Americans spell the word ‘colour’ differently to us here in the UK so expect some differences:

 

North America = color

UK = colour

see other variations below.

 

In North America wiring colour codes for Communication Cables are standardised in ANSI (American National Standards Institute).

Table Two: High pair count colour coded pairs and binder groups for Copper Cables ANSI

 

 

 

 

 

Pair Number

Tip

Ring

Binder Group Colour

Pair Count

1

White

Blue

White-Blue

001-025

2

White

Orange

White-Orange

026-050

3

White

Green

White-Green

051-075

4

White

Brown

White-Brown

076-100

5

White

Slate

White-Slate

101-125

6

Red

Blue

Red-Blue

126-150

7

Red

Orange

Red-Orange

151-175

8

Red

Green

Red-Green

176-200

9

Red

Brown

Red-Brown

201-225

10

Red

Slate

Red-Slate

226-250

11

Black

Blue

Black-Blue

251-275

12

Black

Orange

Black-Orange

276-300

13

Black

Green

Black-Green

301-325

14

Black

Brown

Black-brown

326-350

15

Black

Slate

Black-Slate

351-375

16

Yellow

Blue

Yellow-Blue

376-400

17

Yellow

Orange

Yellow-Orange

401-425

18

Yellow

Green

Yellow-Green

426-450

19

Yellow

Brown

Yellow-Brown

451-475

20

Yellow

Slate

Yellow-Slate

476-500

21

Violet

Blue

Violet-Blue

501-525

22

Violet

Orange

Violet-Orange

526-550

23

Violet

Green

Violet-Green

551-575

24

Violet

Brown

Violet-Brown

576-600

25

Violet

Slate

No Binder

 

 Tip & Ring versus A & B

It takes two conductors to make a pair.  In North America the pair has a ‘Tip’ conductor and a ‘Ring’ conductor.  In the UK the pair has an ‘A’ wire and a ‘B’ wire. They relate thus:

 

Tip = A

Ring = B

 

Variations in colour codes

In Europe there are several variations of colour codes and these are quite different to those used in North America.

 Table One: Variations in Optical Fibre Colour Codes

Fibre Number

ANSI

Siemens Germany

1

Blue

Red

2

Orange

Green

3

Green

Blue

4

Brown

Yellow

5

Slate

White

6

White

Grey

7

Red

Brown

8

Black

Violet

9

Yellow

Turquoise

10

Violet

Black

11

Rose

Orange

12

Aqua

pink

 

 

 

Siemens also use a different colour code from ANSI for their "Quad" shielded copper cables.

Colour code variations will also be found in the UK between internal and external copper cables see example below for CW1326.

Colour Scheme for CW1326 PET external Cable in 10-pair Units
Pair Number Colour of Conductor Insulation
  A Wire B Wire
1 White Blue
2 White Orange
3 White Green
4 White Brown
5 White Grey
6 Red Blue
7 Red Orange
8 Red Green
9 Red Brown
10 Red Grey
Colour of Tape Lappings
Unit No. Colour
1 Blue
2 Orange
3 Green
4 Brown
5 Grey
6 White
7 Red
8 Black
9 Yellow
10 Violet

 

 

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