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    Broadband Drop out - Hopefully cured (faulty filter)..

    This is a discussion on Broadband Drop out - Hopefully cured (faulty filter).. within the Sky Broadband help forums, part of the Sky Broadband help and support category; I have been experiencing frequent drop outs of late and have been trawling through these forums. Thought my experience might ...

    1. #1
      noddy119's Avatar
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      Broadband Drop out - Hopefully cured (faulty filter)..

      I have been experiencing frequent drop outs of late and have been trawling through these forums. Thought my experience might be of use to others

      Identifying a downstream noise margin of around 3dB as 'not good' and downloading Routerstats lite, I think I have found the problem - a faulty filter on the cable to our main phone .


      The image below shows the router stats before and after replacing the filter. Where it drops to zero is when the phone is put 'on hook'.
      Broadband Drop out - Hopefully cured (faulty filter)..-capture.jpg
      It all stacks up now as we thought our cordless phone was on the way out as had a lot of background noise, (which is now quiet again). I even had Sky do a line test and they reported no issues or noise.


      Just hoping the speed will increase as the line settles down again? It was a lot higher.

      Current Stats:
      Broadband Link Downstream Upstream
      Connection Speed 13311 kbps 797 kbps
      Line Attenuation 22.0 dB 13.5 dB
      Noise Margin 15.5 dB 16.16 dB


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    3. #2
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      Re: Broadband Drop out - Hopefully cured (faulty filter)..

      With that 22db attenuation i'd be expecting somewhere around 20Mbps downstream & 1.3Mbps upstream.

      If you do have the patience to leave it, it would be interesting to see if the improvement you've made does trigger line training to start running automatically.

      If not or it doesn't start, just give sky a call but be sure to describe that what's needed as line training aka line optimisation.

    4. #3
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      Re: Broadband Drop out - Hopefully cured (faulty filter)..

      gymno - it looks like line training has kicked in automatically?

      Broadband Drop out - Hopefully cured (faulty filter)..-capture2.jpg

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      Re: Broadband Drop out - Hopefully cured (faulty filter)..

      It certainly has.

      On what date did you replace the filter?

      When in training mode, DLM usually resyncs the line each night between 2 & 3am.
      Have your stats been changing daily since then, with the WAN uptime indicating those resyncs taking place in the early hours?
      (The WAN resets to zero at every resync).

    6. #5
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      Re: Broadband Drop out - Hopefully cured (faulty filter)..

      it doesn't look like DLM is working as the WAN has been up since my last reboot after changing the filter on the 5th August, and the speed is exactly the same

      System Up Time:
      110:49:35

      Port Status TxPkts RxPkts Collision Pkts Tx b/s Rx b/s Up Time
      WAN PPPoA 70347004 75215641 0 326268 145678 104:17:50
      LAN Up 1221532 767423 0 52567 6164 110:49:35
      WLAN Up 3199228 2178528 0 0 162 110:49:12
      Broadband Link Downstream Upstream
      Connection Speed 13311 kbps 797 kbps
      Line Attenuation 22.0 dB 13.2 dB
      Noise Margin 15.8 dB 16.16 dB

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      Re: Broadband Drop out - Hopefully cured (faulty filter)..

      Aha!

      So DLM did step in automatically, but only in order to reduce speeds because of the problem just before you fixed it.

      This is a classic case of DLM being quick to step in with a negative move having detected an issue, thus leaving you with a working connection...
      But not being so quick to step in again & raise speeds once the issue has been resolved.

      The best thing to do would be to call sky.
      Explain that you've fixed a fairly significant problem with your home wiring & that you'd like for DLM line training aka line optimisation to be run, as your router statistics indicate you could get a lot more speed.

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      Re: Broadband Drop out - Hopefully cured (faulty filter)..

      Before you call, try rebooting again and see if your speed improves. If it doesn't, do as suggested.

      TomD


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


      Useful Utilites

      http://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.





    9. #8
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      Re: Broadband Drop out - Hopefully cured (faulty filter)..

      I Spoke to soon - it looks like I still have a problem - the noise margin drops very low, fluctuates up and down and the broadband connection is lost, today between 15:50 and 18:00ish. I am not sure what is causing it as yet - will have a closer look at the weekend, connect into the test socket etc.

      When the noise margin is low have back a problem we had with a few weeks back where the landline would not connect to the mobile network, dials out but won't connect, although the mobile dialled rings.

      Broadband Drop out - Hopefully cured (faulty filter)..-capture.jpg image of it happening

     

     

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