Technical Specifications

Figure 87: Null-modem Cable Pinouts

Switch

PC/Terminal

Cable connector: 9-pin female

Cable connector: 25-pin male/female

Screen Shell

TxD 3

RxD 2

Ground 5

RTS 7

CTS 8

DSR 6

DCD 1

DTR 4

1Screen

3RxD

2TxD

7Ground

4RTS

20 DTR

5CTS

6DSR

8 DCD

25pin

Figure 88 shows the pinouts for a 9-pin to 9-pin (PC-AT) null-modem serial cable.

Figure 88: PC-AT Serial Null-modem Cable Pinouts

Switch

PC/Terminal

Cable connector: 9-pin female

Cable connector: 25-pin male/female

Screen Shell

TxD 3

RxD 2

Ground 5

RTS 7

CTS 8

DSR 6

DCD 1

DTR 4

1Screen

3RxD

2TxD

7Ground

4RTS

20 DTR

5CTS

6DSR

8 DCD

25pin

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BlackDiamond 12800 Series Switches Hardware Installation Guide

 

 

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Extreme Networks 12804, 12802 manual Null-modem Cable Pinouts Switch PC/Terminal