Cables and Connectors

Cable and Connector Pin-Outs

RS-232 WAN Cable—Minimum Pin-Outs

WAN link end

 

Router end

EIA and Signal Name

25-pin male

 

62-pin male

 

 

2

 

 

 

59

BA

Send Data

 

 

 

3

 

 

 

1

BB

Receive Data

 

 

 

4

 

 

 

 

57

CA

Request to Send

 

 

 

 

5

 

 

 

4

CB

Clear to Send

 

 

 

6

 

 

 

46

CC

Data Mode

 

 

 

7

 

 

 

9

AB

Signal Ground

 

 

 

 

 

 

 

22-27

 

 

 

 

 

 

 

 

 

 

 

 

47

 

 

 

 

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

 

 

31

 

 

 

 

 

 

 

 

 

 

 

 

52

 

 

 

 

 

 

 

 

8

 

 

 

6

CF

Receiver Ready

 

 

 

12

 

 

 

28

 

Reserved

 

 

 

 

13

 

 

 

7

 

Reserved

 

 

 

 

14

 

 

 

13

 

Reserved

 

 

 

 

15

 

 

 

 

2

DB

Send Timing

 

 

 

 

16

 

 

 

49

 

Reserved

 

 

 

17

 

 

 

3

DD

Receive Timing

 

 

 

19

 

 

 

12

 

Reserved

 

 

 

 

20

 

 

 

58

CD

Terminal Ready

 

 

 

21

 

 

 

29

 

Reserved

 

 

 

 

22

 

 

 

48

 

Reserved

 

 

 

 

23

 

 

 

55

 

Reserved

 

 

 

 

24

 

 

 

56

DA

Terminal Timing

 

 

The maximum cable length is 15 meters (50 feet).

A-12