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    Noise Margin

    This is a discussion on Noise Margin within the Cabling and faceplate help forums, part of the Sky Broadband help and support category; Does anyone know the best noise margin mine was 6.9 a week ago and it is now15.4 is this to ...

    1. #1
      Philco's Avatar
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      Noise Margin

      Does anyone know the best noise margin mine was 6.9 a week ago and it is now15.4 is this to high or i have i got a fault somewhere



      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 1290 1498 0 661 2076 00:09:14
      LAN 10M/100M 2403 2256 0 2555 872 00:10:03
      WLAN 11M/54M 276 0 0 68 0 00:09:55


      ADSL Link Downstream Upstream
      Connection Speed 2046 kbps 415 kbps
      Line Attenuation 51.0 db 31.4 db
      Noise Margin 15.4 db 16.0 db


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    3. #2
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      Re: Noise Margin

      You are capped. It aims for around 6.9/ 7 I think. How is your router connected to the telephone line and what else is on the line too?

    4. #3
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      Re: Noise Margin

      Thanks for the reply.
      From the router back to the Bt connector box.
      Router connected to ADSL box then via BT old master socket then connector box where the drop cable enters the house.
      I don't want remove the old master socket, they say it is illegal to remove it or by pass it.
      I have phone sky, i think they are sending an engineer out to have a look at the wiring from the telephone pole the house

    5. #4
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      Re: Noise Margin

      Can someone tell me if my noise margin is right, it 14.2 last month with 3mgs download speed, now it down to 6.9 noise margin and a 5363 down load speed,
      or i have still being capped or wiring problems still which i still can't see that can be wrong.
      I have a cable direct from a BT junction connector to a ADSL master socket no other extensions

      ADSL Link Downstream Upstream
      Connection Speed 5363 kbps 767 kbps
      Line Attenuation 52.0 db 31.8 db
      Noise Margin 6.9 db 13.1 db

    6. #5
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      Re: Noise Margin

      6.9 is the default noise margin so your line is now getting as much as it can and still be stable. As the speed increases the noise margin decreases.

      TomD


      Please note the views and recommendations in my posts are my own and in no way reflect the views of SkyUser.


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      https://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

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    7. #6
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      Re: Noise Margin

      even 7.o is the right noise margin..but above 7.5 it is really bad..

    8. #7
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      Re: Noise Margin

      No, anything over 7.5dB just means it's slightly capped - either itself or manually. If it was in the teens then yes you're clearly capped or have something very wrong with your line!
      -------------------------------------------



      Useful Sticky: - How To Obtain Your Router Stats, BT Speed Test, Check For Test Socket

    9. #8
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      Re: Noise Margin


     

     

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