A Connectors and Connection Media
A.1 1000BASE-T/100BASE-TX/10BA
SE-T Port
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 10Mbps, and 100-ohm Category-5 cables for 100Mbps, which
can be up to 100 m. Figure A-2 shows the pinouts of the 100BASE-TX/10BASE-T:
Figure A-2 Pinouts of the 100BASE-TX/10BASE-T
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