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Wiring Specifications

25 Pair Cable Color Code

White/Blue

Blue/White

White/Orange

Orange/White

White/Green

Green/White

White/Brown

Brown/White

White/Slate

Slate/White

Red/Blue

Blue/Red

Red/Orange

Orange/Red

Red/Green

Red/Brown

Brown/Red

Red/Slate

Slate/Red

Black/Blue

Blue/Black

Black/Orange

Orange/Black

Black/Green

Green/Black

Black/Brown

Brown/Black

Black/Slate

Slate/Black

Yellow/Blue

Blue/Yellow

Yellow/Orange

Orange/Yellow

Yellow/Green

Green/Yellow

Yellow/Brown

Brown/Yellow

Yellow/Slate

Slate/Yellow

Violet/Blue

Blue/Violet

Violet/Orange

Orange/Violet

Violet/Green

Green/Violet

Violet/Brown

Brown/Violet

Violet/Slate

Slate/Violet

Telco PIN#

26

1

27

2

28

3

29

4

30

5

31

6

32

7

8

34

9

35

10

36

11

37

12

38

13

39

14

40

15

41

12

42

17

43

18

44

19

45

20

46

21

47

22

48

23

49

24

50

25

110 PIN#

1

2

3

4

5

6

7

8

9

10

11

12

13

14

12

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

# Of Modular Jacks Per Telco Connector

USOC Wiring RJ11 6P2C

4

3

4

3

4

3

4

3

4

3

4

3

4

3

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

4

3

-

-

24

USOC Wiring RJ11 6P4C

4

3

2

5

4

3

2

5

4

3

2

5

4

3

5

4

3

2

5

4

3

2

5

4

3

2

5

4

3

2

5

4

3

2

5

4

3

2

5

4

3

2

5

4

3

2

5

-

-

12

USOC wiring RJ12 6P12

4

3

2

5

1

6

4

3

2

5

1

6

4

3

5

1

6

4

3

2

5

1

6

4

3

2

5

1

6

4

3

2

5

1

6

4

3

2

5

1

6

4

3

2

5

1

6

-

-

8

USOC wiring RJ45 8P8C

5

4

3

6

2

7

8

1

5

4

3

6

2

7

1

5

4

3

6

2

7

8

1

5

4

3

6

2

7

8

1

5

4

3

6

2

7

8

1

5

4

3

6

2

7

8

1

-

-

6

356A Wiring RJ45" 8P6C

5

4

1

2

3

6

5

4

1

2

3

6

5

4

2

3

6

5

4

1

2

3

6

5

4

1

2

3

6

5

4

1

2

3

6

5

4

1

2

3

6

5

4

1

2

3

6

-

-

8

10 Baset Wiring RJ45 8P4C

1

2

3

6

1

2

3

6

1

2

3

6

1

2

6

1

2

3

6

1

2

3

6

1

2

3

6

1

2

3

6

1

2

3

6

1

2

3

6

1

2

3

6

1

2

3

6

-

-

12

AT&T EIAS 568B RJ45 8P8C

5

4

1

2

3

6

7

8

5

4

1

2

3

6

8

5

4

1

2

3

6

7

8

5

4

1

2

3

6

7

8

5

4

1

2

3

6

7

8

5

4

1

2

3

6

7

8

-

-

6

EIC 68A RJ45 8P8C

5

4

3

6

1

2

7

8

5

4

3

6

1

2

8

5

4

3

6

1

2

7

8

5

4

3

6

1

2

7

8

5

4

3

6

1

2

7

8

5

4

3

6

1

2

7

8

-

-

6

DEC Wiring MMJ 6P4C

2

3

5

4

2

3

5

4

2

3

5

4

2

3

4

2

3

5

4

2

3

5

4

2

3

5

4

2

3

5

4

2

3

5

4

2

3

5

4

2

3

5

4

2

3

5

4

-

-

12

DEC Wiring MMJ 6P6C

2

3

5

4

1

6

2

3

5

4

1

6

2

3

4

1

6

2

3

5

4

1

6

2

3

5

4

1

6

2

3

5

4

1

6

2

3

5

4

1

6

2

3

5

4

1

6

-

-

8
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