Kingston Technology KNS500/WG Appendix B Cabling Guidelines, UTP Cable Type, UTP Cable Wiring

Appendix B Cabling Guidelines 11

Appendix B Cabling Guidelines

UTP Cable Type

When installing network cables, the following table shows appropriate cabling guidelines for 100BASE-TX Fast Ethernet architecture.

Cabling Components:	100BASE-TX
Trunk and Patch Cable	4-Pair 100Ω UTP CAT 5
Type:	(only 2 pairs used)
Modular Plug:	8-Pin RJ-45 CAT 5 only
Patch Panel:	8-Pin RJ-45 CAT 5 only

Table B-1 Network Cable Guidelines

(NOTE: All UTP cables come in both solid and stranded filament. Solid filament cables are more rigid and usually intended for trunk cabling. Stranded filament cables are more pliable and generally targeted for patch cables. For proper termination, use the correct RJ-45 connector, as they differ for each type of cable.)

UTP Cable Wiring

UTP cables are wired based on one of two standard pin configurations: Straight-Throughand Cross-Over. 100BASE-TX uses only Category-5 UTP cables with four pairs of wire as illustrated below in Tables B-2 and B-3.

"Straight-Through""Cross-Over”

ConfigurationConfiguration

Pin Number		Pin Number
1	(TRX+)	1	(TRX+)
2	(TRX-)	2	(TRX-)
3	(RCV+)	3	(RCV+)
6	(RCV-)	6	(RCV-)
4, 5, 7, 8		Not Used

Pin Number		Pin Number
1	(TRX+)	3	(RCV+)
2	(TRX-)	6	(RCV-)
3	(RCV+)	1	(TRX+)
6	(RCV-)	2	(TRX-)
4, 5, 7, 8		Not Used

Table B-2. Straight-Through Wiring Table B-3. Cross-Over Wiring

KNS800/WG User’s Guide - Rev. B01 Kingston Technology Company