3Com S21x installation manual Pin Function/Signal Name

V.11 Cable

V.11 DTE Cable The following table shows the DTE pinouts for the V.11 cable.

Pin	Function/Signal Name
1	SHIELD/FRAME GROUND
2	TRANSMITTED DATA A
3	RECEIVED DATA A
4	CONTROL A
6	INDICATION B
7	SIGNAL GROUND
8	INDICATION A
13	TRANSMIT CLOCK B
14	TRANSMITTED DATA B
15	TRANSMIT CLOCK A
16	RECEIVED DATA B
17	RECEIVE CLOCK A
18	RECEIVE CLOCK B
19	RECEIVE CLOCK B
20	CONTROL B
21	TRANSMIT CLOCK B
22	EXTERNAL TRANSMIT CLOCK B
24	EXTERNAL TRANSMIT CLOCK A

PathBuilder S21x Switch Cabling B-11