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    A couple of quickies

    This is a discussion on A couple of quickies within the Sky Broadband help forums, part of the Sky Broadband help and support category; Why do sky use the DLM and a default noise margin of 7db down and seemingly 9db up? Why no ...

    1. #1
      Kona Owner's Avatar
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      A couple of quickies

      Why do sky use the DLM and a default noise margin of 7db down and seemingly 9db up?

      Why no just let it run to what it can get at 6db like everyone else? On a long line there is a difference about half a Mbit between the winter and summer speed so why have it fixed?


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      Re: A couple of quickies

      Sky appeal to the masses and so use a conservative noise fighure so they don't have to deal with so many support calls that come in due to lines dropping.

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      Re: A couple of quickies

      I cant say my line was any less stable on AOL who just let it run amuck at 6db and its not like AOL are a specialist ISP is it LOL.

      TBF Sky wouldnt get any more calls cos the majority of users go to bed and wake up unaware that their router has resynced in the night due to the noise margin dropping and them that are aware of it would just reboot the router.

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      Re: A couple of quickies

      I know a few people on ISP's who have problems with dropouts/lots of errors on 6db noise margins, the only solution for them was to be moved onto the 12db setting which has crippled the speed a lot more than it would have been on SKY's 7db

      Pace SKY HD With Seagate Pipeline HD 2TB

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      Re: A couple of quickies

      its always been 9db in my experience before 12 and then ultimately 15db but even BT profiles will gradually work back towards 6db.

      The point isn't really that they have set the default to 7db, the problem is they set a fixed speed thanks to the DLM, 7db in the winter would give a much better speed than 7db in the summer, in the short time i have had Sky when the temperatures have been up my sync of 4096kbps is sometimes with a 7db noise margin but reboot on a cooler day and it syncs with a noise margin over 8db and that is just lost speed.

     

     

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