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    Line Attenuation and poor connection speeds

    This is a discussion on Line Attenuation and poor connection speeds within the Speed tests and how to get better results forums, part of the Sky Broadband help and support category; Okay, here are the stats: Statistics when plugged into the master (test) socket: Port Status TxPkts RxPkts Collisions Tx B/s ...

    1. #11
      surflogic's Avatar
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      Re: Line Attenuation and poor connection speeds

      Okay, here are the stats:

      Statistics when plugged into the master (test) socket:

      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 2394 3901 0 0 0 0:01:22
      LAN 4894 3246 0 0 0 0:05:49
      WLAN 0 0 0 0 0 0:05:27

      ADSL Link Downstream Upstream
      Connection Speed 5056 kbps 448 kbps
      Line Attenuation 51.0 db 28.0 db
      Noise Margin 5.9 db 23.0 db

      Speed test results:

      Download Speed = 1928Kbps
      Upload Speed = 257Kbps



      Statistics when plugged into the master socket only:


      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 37 34 0 0 0 0:01:14
      LAN 12016 8369 0 0 0 0:27:24
      WLAN 0 0 0 0 0 0:27:02


      ADSL Link Downstream Upstream
      Connection Speed 2432 kbps 448 kbps
      Line Attenuation 52.0 db 28.0 db
      Noise Margin 5.9 db 23.0 db

      Speed test results:

      Download Speed = 1872Kbps
      Upload Speed = 351Kbps


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    3. #12
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      Re: Line Attenuation and poor connection speeds

      Quote Originally Posted by surflogic View Post
      I have also tested this in the master socket, and in the test socket under the face plate - both returned the same results.
      Well they didn't this time. In your test socket you're getting the ~5250kbps I predicted earlier.

      Your download speed is low for that sync in the test socket but (assuming that's a wired connection) that will be because your BRAS profile (IP rate) hasn't updated yet. If the exchange equipment detects a higher sync event for a period of 3 days, without it dropping, then it will move to a higher Bras profile of 4000kbps in this instance.

      The fact you get such an improved sync in your test socket shows that you have a problem in your home phone wiring e.g. plug in extension, faulty filters, doubler/splitter etc.
      Last edited by Saturday; 14-01-08 at 07:44 PM.

    4. #13
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      Re: Line Attenuation and poor connection speeds

      Okay, I've removed the ring wire from both the master socket and also the socket in the living room (where the micro filter is plugged in) and I'm still getting a noise margin of around 5.6 db:

      ADSL Link Downstream Upstream
      Connection Speed 2432 kbps 448 kbps
      Line Attenuation 51.0 db 29.0 db
      Noise Margin 5.6 db 22.0 db

      So I assume the ring wire isn't the root cause. I could use a new face plate and split the signal at the master socket, but I have no power supply where the socket is so I can't really do this option (let me rephrase; I would do this using extn cables etc, but the wife is adamant that the router is not going by the front door and definitley no extn cables, so you see my dilemma!!).

      I think I will get the builders back in to have a look (house is new and under warrenty), as the problem is definitley within the internal wiring somewhere. Can you suggest any final tests I can perform to use as evidence that it is a problem with their wiring?

      Thanks all for your help on this, it appreciated!

    5. #14
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      Re: Line Attenuation and poor connection speeds

      Ok, which thread would you rather we answer in?

    6. #15
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      Re: Line Attenuation and poor connection speeds

      I appreciate your help PaulSky, but really there's no need for sarcasm!

     

     
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