B-1

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.

Terminal or PC

 

Modem

DCD

1

1

DCD

RX

2

2

RX

TX

3

3

TX

DTR

4

4

DTR

GND

5

5

GND

DSR

6

6

DSR

RTS

7

7

RTS

CTS

8

8

CTS

RI

9

9

RI

Male

Female

Female

Male

Figure B-1.

Null-modem cable requirements

 

 

Compaq Integrated Remote Console User Guide

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Image 115
Compaq 281862-002 manual Null-Modem Cable Description, Terminal or PC Modem