SMC Networks 8724M INT, Installation Manual

Page: 63 / 86

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PPENDIX
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C
ABLES
Twisted-Pair Cable and Pin Assignments
For 10/100BASE-TX connections, a twisted-pair cable must have two
pairs of wires. For 1000BASE-T connections the twisted-pair cable must
have four pairs of wires. Each wire pair is identified by two different colors.
For example, one wire might be green and the other, green 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
specific orientation. (See “Cabling Guidelines” on page 4-1 for
an explanation.)
Caution: DO NOT plug a phone jack connector into any RJ-45 port.
This will damage the switch. Use only twisted-pair cables with
RJ-45 connectors that conform with FCC standards.
The figure below 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.
Figure B-1 RJ-45 Connector Pin Numbers
8
1
1
8