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    What is capped

    This is a discussion on What is capped within the Speed tests and how to get better results forums, part of the Sky Broadband help and support category; Howdy-hey. Obviously i know what capped is, but i've noticed that quite alot of people are asking about being capped ...

    1. #1
      Jonnyhibbert's Avatar
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      What is capped

      Howdy-hey.
      Obviously i know what capped is, but i've noticed that quite alot of people are asking about being capped and im just wondering what it actually is in regards to Sky- Why do they do it and what are the symptons ect?
      Also im curious- Whats ADSL2? Ive noticed it around the forums as well, and it seems interesting. How do you know if your on it ect?
      Last edited by Jonnyhibbert; 16-04-07 at 03:15 PM.


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    3. #2
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      Re: What is capped

      adsl 2 is upto 24MB download speed and upto 2.5MB Up speed - it's the 2nd generation if you like of ADSL which is upto 8mb

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      Re: What is capped

      @ PeteC

      Not quite.

      ADSL2 is up to 12meg. ADSL2+ is up to 24meg. Both are downstream connection speeds not download speeds.


      @Jonnyhibbert

      Welcome to the forum

      Sky generally use two ADSL modes for their LLU customers: G.DMT and ADSL2+. The particular "flavour" of G.DMT Sky use offers a theoretical downstream connection of ~12meg but in the real world ~9.5meg is the limit. G.DMT is usually used by Sky for their Base and Mid products as there's no need for a faster mode. It is also more tolerant of noisy lines than ADSL2+ and so is used by Sky when they find line problems or when the line attenuation won't support more than 8meg in any case.

      Capping is completely separate from the ADSL mode. Here Sky are setting the exchange equipment to only allow a connection up to a certain speed. Every Sky LLU product is theoretically capped e.g. Base at 2meg, Mid at 8meg and Max at 16meg. However, as connection speed is inversely proportional to noise margin for any given attenuation, capping connection speeds lower than those listed above raises the noise margin. Higher noise margin means lower error levels. Therefore Sky also use capping to improve the connection stability on poor lines.
      Last edited by Saturday; 16-04-07 at 04:52 PM.

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      Re: What is capped

      Saturday- Thankyou for the reply, very helpfull indeed
      Must say im very impressed with the site/forums so far, i wonder if sky have noticed this site and what there thoughts are...

     

     

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