X.21 DTE Cable Pinout

15

1

–

Shield Ground

60

2

59

Transmit Data (A)

48

3

47

Control (A)

1

4

2

Receive (A)

37

5

38

Indicate (A)

5

6

6

Signal Element Timing (A)

57

8

–

Signal Ground

59

9

60

Transmit Data (B)

47

10

48

Control (B)

2

11

1

Receive (B)

38

12

37

Indicate (B)

6

13

5

Signal Element Timing (B)

30 to 29

–

–

–

18 to 17

–

–

–