116 APPENDIX B: PIN-OUTS
Modem Cable RJ-45 to RS-232 25-pin
Ethernet Port RJ-45
Pin Assignments
10/100 and 1000BASE-T RJ-45 connections.
Table10 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
Switch4500
Cableconnector: RJ-45 female
RS-232Modem Port
Cableconnector: 25-pin male
Pin Number 10/100 1000
Ports configured as MDI
1Transmit Data + Bidirectional Data A+
2Transmit Data – Bidirectional Data A-
3Receive Data + Bidirectional Data B+
4Not assigned Bidirectional Data C+
5Not assigned Bidirectional Data C-
6Receive Data – Bidirectional Data B-
7Not assigned Bidirectional Data D+
8Not assigned Bidirectional Data D-