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    Help Needed with 'Noise Margin'

    This is a discussion on Help Needed with 'Noise Margin' within the Speed tests and how to get better results forums, part of the Sky Broadband help and support category; Hi, My Broadband connection is very very slow. The download speed which I am getting is 1kpbs and sometimes even ...

    1. #1
      namsky's Avatar
      namsky is offline Sky User Member
      Broadband ISP: Mid
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      Help Needed with 'Noise Margin'


      My Broadband connection is very very slow. The download speed which I am getting is 1kpbs and sometimes even lower then that. This is actually slower then even a dial up connection. Following are the statistics shown by my router.I have 'Sky Broadband Connect' Package. Can anybody please help me after looking at these statistics

      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 235 316 0 103 1192 00:05:01
      LAN 10M/100M 199 0 0 165 0 00:05:20
      WLAN 11M/54M 545 592 0 1397 193 00:05:10

      ADSL Link Downstream Upstream
      Connection Speed 7584 kbps 448 kbps
      Line Attenuation 36.0 db 21.5 db
      Noise Margin 5.5 db 19.0 db

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    3. #2
      Tezcatlipoca's Avatar
      Tezcatlipoca is offline Sky User Moderator
      Exchange: Cambridge (EACAM)
      Broadband ISP: Sky Fibre Unlimited Pro
      Router: Sky Hub SR101
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      Re: Help Needed with 'Noise Margin'

      Connect? Your profile says Mid, btw.

      Your noise margin is very poor.

      Poor noise margin > connection problems, & eventually disconnection as it drops more during noisy periods (e.g. the evening). I'd expect your connection may have a lot of errors too.

      You need to find what's causing you to have a poor noise margin.

      Do you connect the router to the BT master, or to an extension?

      Do you have a fairly modern NTE5 BT master socket? It has a removable "faceplate" (the lower front half). If you take out the two screws, you can pull the faceplate off, revealing the test socket behind it. Plug the router into that (the test socket, behind the faceplate), run it for a while, & then see what the noise margin is. If it is higher than however you normally connect, then it's gonna be something at your end causing the problem.

      You can try & improve on a poor noise margin by e.g. removing the ring wire, fitting a filtered faceplate, etc.


      DSL ZoneUK - Improve your speed - Extension wiring and Disconnection help

      ADSL Nation - XTE-2005 - Filtered Master Faceplate

      And please have a long read through Saturday's excellent post here:

      Explains all about attenuation, noise margin, & noise margin related connection problems & disconnections. Lots of info, help, & advice in it.

      Also, as you're on Connect, rather than an LLU connection, you are also at the mercy of BT, so may get speed issues due to that at certain times, as well as your poor noise margin affecting things.



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