IBM X.25 manual Bis

X.21

bis

(V.24)

Connector

Information

The

X.21bis (V.24)

pin

assignments

for the 37-pin

connector

on

the

PCI co-processor adapter and

the corresponding

pin

assignments

for

the 25-pin connector

on the optional adapter cable are listed in

Table 3-2.

(The

pin

positions

on

the

connector are

shown

under

“Pin Numbers”

on

page 3-1.)

Table 3-2. X.21 bis (V.24) Interface Pin

Assignments

Signal

37-Pin

25-Pin

Name

Connector

Connector

TXD

2

2

RXD

3

3

RTS

4

4

CTS

5

5

DSR

6

6

GND

7

7

CD

8

8

DTR

20

20

RLBT

21

21

RI

22

22

TX

CLK IN

24

15

TM

25

25

RX

CLK

26

17

LLBT

27

18

Note:

Pin

27

can

be

used

as

either

the

EIA-232 signal, HRS,

or

the V.24

signal,

LLBT.

Connector Information3-3