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70 APPENDIX B: PIN-OUTS
Modem Cable 9-pin to RS-232 25-pin
RJ-45 Pin
Assignments
Pin assignments are identical for 10/100BASE-T and 1000BASE-T RJ-45
connectors.
Table 10 Pin assignments
Pin Number 10/100BASE-T 1000BASE-T
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-