Cables And Pinouts; Twisted-Pair Cable Assignments - SMC Networks 2552W-G User Manual

Cables and Pinouts

Twisted-Pair Cable Assignments

Caution: DO NOT plug a phone jack connector into the RJ-45 port.
For 10/100BASE-TX connections, a twisted-pair cable must have
two pairs of wires. Each wire pair is identified by two different
colors. For example, one wire might be red and the other, red with
white stripes. Also, an RJ-45 connector must be attached to both
ends of the cable.
Caution: Each wire pair must be attached to the RJ-45 connectors in a
The following figure illustrates how the pins on the RJ-45
connector are numbered. Be sure to hold the connectors in the
same orientation when attaching the wires to the pins.
Use only twisted-pair cables with RJ-45 connectors that
conform with FCC standards.
specific orientation. (See "Straight-Through Wiring" on page
B-3 and "Crossover Wiring" on page B-3 for an explanation.)
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Appendix B
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B-1