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    Major Reduction In SNR due to odd extension?

    This is a discussion on Major Reduction In SNR due to odd extension? within the Cabling and faceplate help forums, part of the Sky Broadband help and support category; Hi I have been on sky for a few months and I have only been getting 2048kbps when sky said ...

    1. #1
      IIgarnierII's Avatar
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      Major Reduction In SNR due to odd extension?

      Hi

      I have been on sky for a few months and I have only been getting 2048kbps when sky said I should get around 5000kbps!

      Over the last couple of weeks I have decided to try and fix this issue, so the first thing I did was to check the SNR. At the socket where my router is plugged in I get these stats:

      ADSL Link Downstream Upstream
      Connection Speed 2043 kbps 606 kbps
      Line Attenuation 44 db 26 db
      Noise Margin 14 db 15 db

      From the master test socket and the master faceplate I get these stats:

      ADSL Link Downstream Upstream
      Connection Speed 2043 kbps 606 kbps
      Line Attenuation 44 db 25 db
      Noise Margin 26 db 16 db

      As you can see this is a major increase, however it isn't really possible to leave my router right next to the front door.

      After testing many different stages of my wiring I have figured out that an odd extension box that connects the rest of my house to the master socket is the problem. this reduces my downstream noise margin to 15 db, so only 1db is lost in the rest of my internal house wiring.

      I don't know if there is a ring wire in this as there is no screw, I don't want to prise it open without further info in case of damage.

      Here are some images of the socket:





      I am extremely grateful for any response.


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    3. #2
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      Re: Major Reduction In SNR due to odd extension?

      That looks like a splitter type device. I'm a bit confused - does it feed to an extension socket of some kind? i.e.

      master socket > splitter device > ?

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      Re: Major Reduction In SNR due to odd extension?

      There will be a ring line in your plug in extension, but it is not so easy to disconnect it. This is about the only time a BT I-Plate comes into its own. Get one and the ring line in the plug in extension will be isolated as far as ADSL is concerned.

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      Re: Major Reduction In SNR due to odd extension?

      Or just replace with the later NTE5, an I Plate may make the socket stick out a bit too far with the window......
      run-IT-direct, For all your networking, ADSL & telecom requirements.

    6. #5
      IIgarnierII's Avatar
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      Re: Major Reduction In SNR due to odd extension?

      Thanks for the replies guys

      User05 I think it a splitter, its just that wire coming out the bottom I was a bit confused about.

      Looking at the face plates now

    7. #6
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      Re: Major Reduction In SNR due to odd extension?

      If you are using this extension to plug in your router you are never going to get a decent speed. What you should do is fit a filtered faceplate, to keep it tidy more than anything else, get a longer ADSL RJ11 cable, plug it into your faceplate and run it to your router. Anything up to 10-15m of good quality cable will not reduce the speed by any appreciable amount. You can buy these ready made or Run IT Direct will make one up to suit the length you require. If you buy one ready made make sure it is made up of twisted pair and not flat telephone cable.

      TomD


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


      Useful Utilites

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

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





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      Re: Major Reduction In SNR due to odd extension?

      Does anyone know the actual name of this small box, I have ordered a filtered faceplate now and was just wondering if I could get any further info on this extension

    9. #8
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      Re: Major Reduction In SNR due to odd extension?

      run-IT-direct, For all your networking, ADSL & telecom requirements.

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      Re: Major Reduction In SNR due to odd extension?

      It should be possible to wire the extension directly to the filtered faceplate. ie, remove the wires from the box on the bottom and feed them into the bottom of the socket. It would give a better appearance, if nothing else..

      TomD


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


      Useful Utilites

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

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





    11. #10
      IIgarnierII's Avatar
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      Re: Major Reduction In SNR due to odd extension?

      Quote Originally Posted by Isitme View Post
      It should be possible to wire the extension directly to the filtered faceplate. ie, remove the wires from the box on the bottom and feed them into the bottom of the socket. It would give a better appearance, if nothing else..
      I think that I will do this with the new faceplate. Not only will it look better but it is removing the problem component completely.

     

     

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