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70 APPENDIX B: PIN-OUTS
Modem Cable 9-pin to RS-232 25-pin
RJ-45 Pin
Assignments
Pin assignments for ports configured as MDI and MDIX are given in
Table 10 and Table 11.
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 4200
Cable connector: 9-pin 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-
DUA1730-0AAA03.book Page 70 Thursday, November 17, 2005 12:17 PM