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    weird noise margin stats

    This is a discussion on weird noise margin stats within the Sky Router forums, part of the Sky Broadband help category; Hi as mentioned early , i have been losing internet connection (flashing amber light) every night after 9pm-when getting dark!! ...

    1. #1
      barncroft's Avatar
      barncroft is offline Sky User Member
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      weird noise margin stats

      Hi as mentioned early , i have been losing internet connection (flashing amber light) every night after 9pm-when getting dark!! Been watching my noise margin stats on sky router status and this isRouter StatisticsSystem Up Time: 00:41:43

      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 112 85 0 227 617 00:01:26
      LAN 100M/Full 719 0 0 52 0 00:41:39
      WLAN 11M/54M 11373 9862 0 3491 1044 00:41:26
      ADSL Link Downstream Upstream
      Connection Speed 1184 kbps 448 kbps
      Line Attenuation 47 db 13 db
      Noise Margin 2147483647 db 19 db
      what I get
      Then 5 secs later it goes back to 0db then to 2147483647 db. I think any minute now it will start flashing amber on my sagem wireless router then that will be me off for the night!Blimey it just dropped to 0 0 and i couldnt send this but for some reason its come back on which its not done before and now the downstreams varying from 1 to 3 db??

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    3. #2
      Saturday's Avatar
      Saturday is offline Sky User Super Mod
      Broadband ISP: Sky Broadband Unlimited Pro
      Router: Sky Hub SR102
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      Re: weird noise margin stats

      The router can't report a minus noise margin figure (you can't have one really) so when the noise margin drops below zero you get that strange figure reported.

      In a nutshell you have a serious line problem. As it is consistently around the time it gets dark I'd suspect your line is running near some street lighting or similar (low energy lighting and fluorescent lighting in the home is also possible). Your stats show there is a lot of inherent noise in your line - try a test socket comparison to see if the problem is local or not.

      Your options are to find and fix the problem (not easy if it is external) or boost your noise margin to compensate with a hit to your speed.

    4. #3
      nodrog's Avatar
      nodrog is offline Sky User Member
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      Re: weird noise margin stats

      i had this very problem about 3 months ago, contacted BT faults and got auto line test done faulty line reported
      put onto customer service who re did line test and said it was excessive power being put across line at exchange openreach were informed and line was sorted next working day
      i was also not getting all incoming calls sometimes phone rang but cut off when either i answered or answer machine cut in also buzzing on line



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