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Appendix b: null-modem cable description, Appendix b, Null-modem cable description – Compaq 281862-002 User Manual

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B-1

Compaq Integrated Remote Console User Guide

Writer: Caroline Juszczak Project: Compaq Integrated Remote Console User Guide Comments: 281862-xxx

File Name: K-APPB.DOC Last Saved On: 11/20/98 12:21 PM

COMPAQ CONFIDENTIAL - NEED TO KNOW REQUIRED

Appendix B

Null-Modem Cable Description

For proper communication, Integrated Remote Console requires a null-modem
cable with a complete set of modem control signals. The exact wiring diagram
for this cable is shown in below. Cables are occasionally labeled as “null-
modem” which do not conform to this diagram. Check with your cable vendor
to insure that the cable meets the requirements shown below. Cables that differ
from this specification may not function correctly.

DCD

RX

TX

DTR

GND

DSR

RTS
CTS

RI

DCD

RX

TX

DTR

GND

DSR

RTS
CTS

RI

1
2
3
4
5
6
7
8
9

1
2
3
4
5
6
7
8
9

Female

Female

Male

Male

Terminal or PC

Modem

Figure B-1. Null-modem cable requirements