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X.21 bis (V.24) Connector Information

The X.21

bis

(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

Name

37-Pin

Connector

25-Pin

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 Information 3-3

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Ibm X.25 Manual de usuario Pagina 27