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Specifications A - 7
This section is divided into the following parts:
❑ Twisted Pair Connectors
❑ Twisted Pair Cables
Twisted Pair Connectors
Uset the IEEE 802.3 10BASE-T standard for RJ-45 pinouts as described
below. 10BASE-T uses 2 of the 4 pairs of wire: pins 1 and 2 and pins 3 and
6. If the pairs are not configured this way, the connection will not work
properly. Level 3 or higher cable should have the following pin pairings:
❑ pins 4 and 5 are pair 1
❑ pins 3 and 6 are pair 2
❑ pins 1 and 2 are pair 3
❑ pins 7 and 8 are pair 4
Refer to Figure A-1 for an example of the recommended TIA-568A wiring
standard for an RJ-45 connector.
Figure A-2. RJ-45 Connector Pinouts