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    Can someone explain this? (Noise & attenuation change)

    This is a discussion on Can someone explain this? (Noise & attenuation change) within the Sky Broadband help forums, part of the Sky Broadband help and support category; Original stats during 1st 10 days on DLM ADSL Link Downstream Upstream Connection Speed 12284 kbps 606 kbps Line Attenuation ...

    1. #1
      supersonic147's Avatar
      supersonic147 is offline Sky User Member
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      Can someone explain this? (Noise & attenuation change)

      Original stats during 1st 10 days on DLM

      ADSL Link Downstream Upstream
      Connection Speed 12284 kbps 606 kbps
      Line Attenuation 15.5 db 6.3 db
      Noise Margin 8.7 db 22.0 db

      After this line testing was completed, on the 26/6/09 my line went on to stabilastion again for 10 days.

      ADSL Link Downstream Upstream
      Connection Speed 19004 kbps 980 kbps
      Line Attenuation 15.5 db 6.4 db
      Noise Margin 7.3 db 7.5 db

      I'm not complaining about the speed I am getting sollid 1.85mb when downloading from Microsoft so no probs there. I just want to understand why there has been a drop in my noise margin.

      My router is plugged into the hard wired extension socket which is about 20ft from the master socket (no test socket inside), both sockets have all connections removed except for 2 & 5.

      Thx in advance


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    3. #2
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      Re: Can someone explain this? (Noise & attenuation change)

      supersonic147
      Hi this link should explain everything if you need any clarification just ask

    4. #3
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      Re: Can someone explain this? (Noise & attenuation change)

      As speed increases the noise margin decreases, when it hit 6.9db then you are at you max stable speed.

    5. #4
      supersonic147's Avatar
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      Re: Can someone explain this? (Noise & attenuation change)

      Thanks for the info steve & smithy helped me understand whats going on a lot more.

     

     

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