Cabling Guidelines
B.1 Fast Ethernet Cable Guidelines
Fast Ethernet uses UTP cable, as specified in the IEEE 802.3u standard for 100BASE-TX.The
specification requires Category 5 UTP cable consisting of either two-pair or four-pair twisted
insulated copper conductors bound in a single plastic sheath. Category 5 cable is certified up to
100 MHz bandwidth. 100BASE-TX operation uses one pair of wires for transmission and the
other pair for receiving and for collision detection.
When installing Category 5 UTP cabling, use the following guidelines to ensure cables perform
to the following specifications:
B.1.1 Certification
Verify the Category 5 UTP cable has completed the Underwriters' Laboratories (UL) or Electronic
Testing Laboratories (ETL) certification process.
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