Hardware Installation and Reference Guide Appendix A Connectors and Connection Media
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Appendix A Connectors and Connection Media
1000BASE-T/100BASE-TX/10BASE-T Ports
The 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 the cable of 100-ohm Category-5 or Supper
Category-5 UTP or STP, which can be up to 100 m.
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 Schematic Diagram for the Four Twisted Pairs of the 1000BASE-T
In addition to the above cables, the 100BASE-TX/10BASE-T can also use 100-ohm Category-3, 4, 5
cables for 10 Mbps, and 100-ohm Category-5 cables for 100 Mbps, both of which can be up to 100 m. 0
shows the pinouts of the 100BASE-TX/10BASE-T.
Figure A-2 Pinouts of the 100BASE-TX/10BASE-T
Figure A-3 shows the straight-through and crossover cable connections for the 100BASE-TX/10BASE-
T.
Figure A-3 Connections of the Twisted Pairs of the 100BASE-TX/10BASE-T
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