Appendix B: Port Assignments; Rj-45 Port; Figure B.1 Rj-45 Connector (On The Hub Side; Table B.1 Rj-45 Pin Assignments - HP J4091A Installation And Reference Manual

Appendix B: Port Assignments

RJ-45 Port

Pin
1
2
3
6
4,5,7,8
Schematics for both straight and crossover twisted-pair cable are shown
below.
Straight-Through
(Hub)
1 IRD+
2 IRD-
3 OTD+
6 OTD-

Figure B.1 RJ-45 Connector (on the Hub Side)

MDI-X Assignment
(Port 1-8)
Receive Data +
Receive data -
Transmit Data +
Transmit Data -
Not Used

Table B.1 RJ-45 Pin Assignments

(Adapter)
1 OTD+
2 OTD-
3 IRD+
6 IRD-
Port Assignments
MDI Assignment
(Cascade Port 8)
Transmit Data +
Transmit Data -
Receive Data +
Receive data -
Not Used
Crossover
(Hub)
1 IRD+
2 IRD-
3 OTD+
6 OTD-
(Hub)
1 OTD+
2 OTD-
3 IRD+
6 IRD-
B-1