56
A
PPENDIX
A: P
IN
-
OUTS
Modem Cable
RJ-45 to RS-232 25-pin
Ethernet Port RJ-45
Pin Assignments
10/100 and 1000BASE-T RJ-45 connections.
Table 10
Pin assignments
Screen
TxD
RxD
RTS
CTS
DSR
Ground
DCD
DTR
Screen
TxD
RxD
RTS
CTS
DSR
Ground
DCD
DTR
Shell
3
2
7
8
6
5
1
4
1
2
3
4
5
6
7
8
20
Switch 5500
Cable connector: RJ-45 female
RS-232 Modem Port
Cable connector: 25-pin male
Pin Number
10/100
1000
Ports configured as MDI
1
Transmit Data +
Bidirectional Data A+
2
Transmit Data
−
Bidirectional Data A
−
3
Receive Data +
Bidirectional Data B+
4
Not assigned
Bidirectional Data C+
5
Not assigned
Bidirectional Data C
−
6
Receive Data
−
Bidirectional Data B
−
7
Not assigned
Bidirectional Data D+
8
Not assigned
Bidirectional Data D
−
Summary of Contents for 4500G Series
Page 30: ...30 CHAPTER 2 INSTALLING THE SWITCH...
Page 48: ...48 CHAPTER 3 SETTING UP SWITCH MANAGEMENT...
Page 54: ...54 CHAPTER 4 PROBLEM SOLVING...
Page 58: ...58 APPENDIX A PIN OUTS...
Page 64: ...64 APPENDIX B TECHNICAL SPECIFICATIONS...
Page 72: ...72 APPENDIX D 3COM NETWORK MANAGEMENT...
Page 82: ...82 APPENDIX E REDUNDANT POWER SUPPLY SAFETY INFORMATION...
