SuperStack® 4 Switch 5500 Family Getting Started Guide

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Null Modem Cable

RJ-45 to RS-232 25-pin

Switch 5500

Cable connector: RJ-45 female

Screen

TxD

RxD

Ground

RTS

CTS

DSR

DCD

DTR

Shell

3

2

5

7

8

6

1

4

PC/Terminal

Cable connector: 25-pin male/female

1

3

Screen

RxD

TxD only required if screen always required

2

7

4

20

Ground

RTS

DTR

5

6

8

CTS

DSR

DCD required for handshake

PC-AT Serial Cable

RJ-45 to 9-pin

Switch 5500

Cable connector: RJ-45 female

Screen

DTR

TxD

RxD

CTS

Ground

DSR

RTS

DCD

Shell

4

3

2

8

5

6

7

1

PC-AT Serial Port

Cable connector: 9-pin female

Shell Screen only required if screen

1

2

3

4

5

DCD

RxD

TxD

DTR

Ground

DSR

Required for handshake

Always required required for handshake always required

6

7

8

RTS

CTS required for handshake

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Modem Cable

RJ-45 to RS-232 25-pin

Switch 5500

Cable connector: RJ-45 female

Screen

TxD

RxD

RTS

CTS

DSR

Ground

DCD

DTR

Shell

3

2

7

8

6

5

1

4

6

7

8

20

1

2

3

4

5

RS-232 Modem Port

Cable connector: 25-pin male

Screen

TxD

RxD

RTS

CTS

DSR

Ground

DCD

DTR

Ethernet Port RJ-45

Pin Assignments

10/100 and 1000BASE-T RJ-45 connections.

Table 10 Pin assignments

6

7

8

4

5

2

3

Pin Number 10/100

Ports configured as MDI

1 Transmit Data +

Transmit Data –

Receive Data +

Not assigned

Not assigned

Receive Data –

Not assigned

Not assigned

1000

Bidirectional Data A+

Bidirectional Data A-

Bidirectional Data B+

Bidirectional Data C+

Bidirectional Data C-

Bidirectional Data B-

Bidirectional Data D+

Bidirectional Data D-

DUA1715-0AAA02.book Page 103 Wednesday, March 23, 2005 11:17 AM

Ethernet Port RJ-45 Pin Assignments

103

Table 11 Pin assignments

5

6

3

4

7

8

1

2

Pin Number

Ports configured as MDIX

10/100

Receive Data +

Receive Data -

Transmit Data +

Not assigned

Not assigned

Transmit Data –

Not assigned

Not assigned

1000

Bidirectional Data B+

Bidirectional Data B-

Bidirectional Data A+

Bidirectional Data A-

Bidirectional Data D+

Bidirectional Data D-

Bidirectional Data C+

Bidirectional Data C-

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