Serial Port Cable 59

Figure 34 X.21 DTE Cable Assembly

Table 35 describes X.21 DTE cable pinouts.

Table 35 X.21 DTE Cable Pinouts

DB50

Signal

Signal Direction

Signal

DB15

 

 

 

 

 

7

GND

<-->

Circuit GND

8

 

 

 

 

 

23

DTE/DCE

-

Circuit GND

8

 

 

 

 

 

50

GND

<-->

Shield GND

1

 

 

 

 

 

10

RTS/CTS+

->

Control+

3

 

 

 

 

 

34

RTS/CTS-

->

Control-

10

 

 

 

 

 

38

CTS/RTS+

<-

Indication+

5

 

 

 

 

 

14

CTS/RTS-

<-

Indication-

12

 

 

 

 

 

20

RXD/TXD+

<-

Receiver+

4

 

 

 

 

 

44

RXD/TXD-

<-

Receiver-

11

 

 

 

 

 

15

TXD/RXD+

->

Transmit+

2

 

 

 

 

 

39

TXD/RXD-

->

Transmit-

9

 

 

 

 

 

19

RXC/TXCE+

<-

Timing+

6

 

 

 

 

 

43

RXC/TXCE-

<-

Timing-

13

 

 

 

 

 

-

Shielding sheath

<-->

Shielding sheath

-

 

 

 

 

 

X.21 DCE Cable Pinouts Figure 35 illustrates the X.21 DCE cable.

Figure 35 X.21 DCE Cable Assembly

Table 36 describes X.21 DCE cable pinouts.

Table 36 X.21 DCE Cable Pinouts

DB50

Signal

Signal Direction

Signal

DB15

 

 

 

 

 

7

GND

<-->

Circuit GND

8

 

 

 

 

 

50

GND

<-->

Shield GND

1

 

 

 

 

 

10

RTS/CTS+

->

Indication+

5

 

 

 

 

 

34

RTS/CTS-

->

Indication-

12

 

 

 

 

 

38

CTS/RTS+

<-

Control+

3

 

 

 

 

 

Page 59
Image 59
3Com 3016 (3C13616) Describes X.21 DTE cable pinouts, DCE Cable Pinouts illustrates the X.21 DCE cable, DTE Cable Pinouts