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Wireless Networks Thread, cabling problem ??? in Technical; is it possible he has used some cheap cable...
  1. #16

    FN-GM's Avatar
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    Re: cabling problem ???

    is it possible he has used some cheap cable

  2. #17

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    Re: cabling problem ???

    A lot of electricians aren't skilled in the world of structured data cabling.

    You see all those 8 coloured wires? Just stick 'em in that terminal block - any order! 8)

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    Re: cabling problem ???

    here are some colour codes
    http://www.ece.ndsu.nodak.edu/~ceate...ble-color.html

    the sockets probably are already colour coded

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    Re: cabling problem ???

    yeah thats what i'm starting to think webman although when i suggested that my mate didn't want to know and was adamament that they were ok i took my pinchers with me and checked the termination ends and to be fair it looked like a good job.

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    Re: cabling problem ???

    FN-Greatermanchester the patch cables are all fine its the sockets i think are suspect cheers anyway

  6. #21
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    Re: cabling problem ???

    If you have a tester & have tested the patch cables & get the full eight lights, then they are fine.
    You only need four cables to be connected correctly, but they must be the right four. Have a look at this link that FN-GreaterManchester pointed out:
    http://www.ece.ndsu.nodak.edu/~ceate...ble-color.html
    You will notice that you only need 1, 2, 3 & 6 connected.
    When you say you are getting 6 out of the eight, what six?
    I would say you really want to make sure all eight are connected though. It just makes more sense & is not a bodge job.

  7. #22

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    Re: cabling problem ???

    I find sparkys can be the worst structured cable installers, they think its just like mains cable and treat it as such

  8. #23
    mark's Avatar
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    Re: cabling problem ???

    If the data cabling is running too close to mains cabling for too great a length (2' i've found to be too long), that will kill the data signal. I would guess this is the most probable explanation.

  9. #24

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    Re: cabling problem ???

    Quote Originally Posted by mark
    (2' i've found to be too long), that will kill the data signal.
    That really shouldn't happen. The data cable is twisted and balanced to cancel induced interference, and mains (in most circumstances) has L & N in close proximity reducing EM fields. What were the circumstances in your case?

  10. #25

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    Re: cabling problem ???

    Buy a 10 quid tester off ebay and check the points - then you'll know for sure.

  11. #26
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    Re: cabling problem ???

    The data cable is twisted to prevent interference from other network cabling...not mains voltage. Mains voltage is a bit much.

    You also shouldnt run network cables parallel and in close proximity to flourescent strip lights.

  12. #27
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    Re: cabling problem ???

    I've had it several times Andrew. The office staff re-routed the network cable to the reception PC alongside a 4way trailing extension - actually cable tied them together for 2' to keep 'em tidy. No network. Cut cable ties - fine. Data cabling guidelines tell you to only cross mains cabling at right angles and never to run alongside.

  13. #28
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    Re: cabling problem ???

    The IEEE regs also state the size of the hole and the clearance you've gotta have on the cables Muchos fun when you're trying to do it right

  14. #29
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    Re: cabling problem ???

    can i ask a silly question how many cables are you connecting to this router and have you got any swith at all involved ie from the ends of cables upstaires all in switch and then switch into router and downstairs direct into router or all plugged direct into router. Also I know someone has probly asked but have you tried same pc at all points IE lappy or is it diffrent pc (some routers you can disallow or allow certian macs) ensure mac filtering is not on .



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