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Appendix A Connectors and Connection Media
1.1000BASE-T/100BASE-TX/10BASE-T Port
1000BASE-T/100BASE-TX/10BASE-T is a port that supports adaptation of three rates, and automatic MDI/MDIX
Crossover at these three rates.
The 1000BASE-T complies with IEEE 802.3ab, and uses up to 100m of 100-ohm Category-5 or Supper Category-5 UTP
or STP cable. The 1000BASE-T port uses four pairs of wires for transmission, all of which must be connected. Figure A-1
shows the connections of the twisted pairs used by the 1000BASE-T port:
Figure A-1 Four twisted pairs of the 1000BASE-T
Straight-Through
Crossover
Switch
Switch
1TP0+
1TP0+
2TP0-
2TP0-
3TP1+
3TP1+
6TP1-
6TP1-
4TP2+
4TP2+
5TP2-
5TP2-
7TP3+
7TP3+
8TP3-
8TP3-
Switch
Switch
1TP0+
1TP0+
2TP0-
2TP0-
3TP1+
3TP1+
6TP1-
6TP1-
4TP2+
4TP2+
5TP2-
5TP2-
7TP3+
7TP3+
8TP3-
8TP3-
In addition to the above cables, the 100BASE-TX/10BASE-T can also use up to 100m of 10Mbps 100-ohm Category-3, 4,
5 cables and 100Mbps 100-ohm Category-5 cables. Figure A-2 shows the connections of the twisted pairs of the
100BASE-TX/10BASE-T:
Figure A-2 Twisted pairs of the 100BASE-TX/10BASE-T
Figure A-3 shows the connections of the straight-through and crossover twisted pairs of the 100BASE-TX/10BASE-T.
Figure A-3 Connections of the twisted pairs of the 100BASE-TX/10BASE-T
Fiber Connection
For the fiber ports, select single-mode or multiple-mode fibers for connection according to the fiber module connected.
The connection schematic diagram is shown in Figure A-4:
Figure A-4 Schematic Diagram for Fiber Connection
Switch
Switch
TX
TX
RX
RX