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wiring UTP cat3

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  • anti_love
    started a topic wiring UTP cat3

    wiring UTP cat3

    Why is 4-pair wiring UTP cat 3 wiring installed when the advice here that I've seen is to only use 2 pairs?


    thanks for ur time

  • biggles77
    replied
    Gigabit uses all 4 pair.

    Leave a comment:


  • Mazda_brian
    replied
    Because the design specs mean the extra wiring helps to filter out interference and other issues.

    Also, it's designed for future upgradability, why did they wire ports with more than 1 pair, because back in 1985, Modems only required 1 pair for them to get their super highspeed 2400 baud to work, but they wired them with 4 pair even back then because they new that deviced would be coming that would utilise the extra cabling, and thus not have to come back and re-cable everything at a high cost.

    It's future planning that sees even Today's Cat5E cabling systems using 4 pair wire, even though 100mbit ethernet only uses a TX and RX pair, leaving 2 pairs free.

    B.

    Leave a comment:

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