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    Constant De-syncing

    This is a discussion on Constant De-syncing within the Sky Broadband help forums, part of the Sky Broadband help and support category; For probably two months ive had problems with sky, with low sync speeds and de-syncs quite often. It was at ...

    1. #1
      lindley010's Avatar
      lindley010 is offline Sky User Member
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      Constant De-syncing

      For probably two months ive had problems with sky, with low sync speeds and de-syncs quite often. It was at 2.4meg 15 minutes ago, it de-synced to 1meg, with a noise margin of 15db, it then desynced again to the below stats


      Sagem F@ST 2504 [Sky Firmware]
      Firmware Version: 1.9Sky

      ADSL Link Downstream Upstream
      Connection Speed 896 kbps 512 kbps
      Line Attenuation 62.0 db 31.5 db
      Noise Margin 10.1 db 12.0 db


      The above is the 3rd router i have received from sky, a BT engineer has been out and confirmed the max speed is 2.7, but i would most likely get 2.4meg. He also said the problem most likely is due to the router, he also said one household he visited had 6 sky routers, only 1 of them worked properly.

      The above speed seems to be the normal speed on a daily basis, which is pretty crap to say the least.

      So, i need to fix this crap, because ive had enough of pathetic download speeds and constant desyncs, Im not the bill payer otherwise i'd already be on virgin.

      Is there anything i can do except keep ringing sky asking for routers until i find a decent one?


      P.S when i changed the routers, i changed everything, including the power cable.
      And it is plugged into the test socket, it has been for a while. (obviously i had the same problems in the faceplate too)


      Sagem F@ST 2504 [Sky Firmware]

      ADSL Link Downstream Upstream
      Connection Speed 896 kbps 512 kbps
      Line Attenuation 62.0 db 31.5 db
      Noise Margin 20.8 db 12.0 db

      Here's the stats again, 20.8db NM
      Last edited by lindley010; 20-08-10 at 08:12 PM.


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    3. #2
      dsldude's Avatar
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      Re: Constant De-syncing

      Well line is capped at the moment by looks of that, but also possible you have a high resistance line fault try re syncing the router while the phone is off the hook, posts stats while its like that.

    4. #3
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      Re: Constant De-syncing

      Line is capped at 2.5meg, the max the line can handle is 2.7meg, ive tried disconnecting the phone before, it made no difference at all, ive also tried 3 different micro filters. (the original, the MF's that came with the 2nd router, and the MF's that came with the 3rd router)

    5. #4
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      Re: Constant De-syncing

      Try the different filters again but this time take new stats each time as it may indicate if one filter is better than the rest, the BT guy can slate the router all he wants but if it's a line issue it's a line issue. It won't be the router if 3 routers have done the same thing each time.

    6. #5
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      Re: Constant De-syncing

      Hi
      I had a similar problem the other week the reason for me was that DLM had put me on adsl2+ which for the length of line screwed it all up
      rang Sky and got them to put me back to G.DMT no more problems..
      worth a phone call to check i'd say

    7. #6
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      Re: Constant De-syncing

      Quote Originally Posted by lindley010 View Post
      Line is capped at 2.5meg, the max the line can handle is 2.7meg, ive tried disconnecting the phone before, it made no difference at all, ive also tried 3 different micro filters. (the original, the MF's that came with the 2nd router, and the MF's that came with the 3rd router)
      Think you misunderstood what I said, I said post your stats while the phone is off the hook ie you hear a dial tone. if the dsl is dropping randomly but you are in test socket via new filter and already had new router then its likely a external line fault or exchange equipment fault.

      DSL works only with phone off-hook, known as High Open Ameritech - SBC FAQ - dslreports.com

      If your noise margin is higher when phone line is in use then it helps
      prove that issue.

    8. #7
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      Re: Constant De-syncing

      rang Sky and got them to put me back to G.DMT no more problems..
      Unfortunately the OP is on G,DMT. The line is capped at 896/512 and until this is lifted he will not get any more speed.

      I agree with DSLdude, there is a fault on the line and BT engineers rubbishing Sky routers is not going to change that. Routers are seldom the reason for connections dropping, 9 times out of 10 it is a line fault which BT are unwilling to put the effort into finding. Sky send out routers in the hope that it will cure the problem but it seldom does. Routers probably cost Sky about 15, an engineer call out 100+, several times that if an LL5 engineer is required.

      TomD


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


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    9. #8
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      Re: Constant De-syncing

      eh? is it only capped at that speed during certain hours? Such as the evening?

      Because i do sync at higher speeds, such as 2.4meg or 2.5meg(which is what it is capped at) now and again, but there doesn't seem a pattern to it, ill try the phone thing etc.

      Btw, with the first router, we had 1.5meg+ for months, then all of a sudden it dropped to like 0.6 meg etc, so i rang up, got a new router

      for the full day we got 2.5meg, then late on it dropped back down to 0.7/0.6meg
      Then the 2nd router stopped working completely, wouldn't sync at all.

      Then the engineer came out and got a 2.7meg testing the line using the original filter.

      3rd router got sent out, same thing, 2.5meg all day long, then late on, it de-synced to 896kbps, now and again we do get 2.5 meg.

      Current stats;
      ADSL Link Downstream Upstream
      Connection Speed 928 kbps 512 kbps
      Line Attenuation 62.0 db 31.5 db
      Noise Margin 9.6 db 12.0 db

      ill try it with the dial tone;

      ADSL Link Downstream Upstream
      Connection Speed 928 kbps 512 kbps
      Line Attenuation 62.0 db 31.5 db
      Noise Margin 8.6 db 12.0 db

      After putting the phone down;
      ADSL Link Downstream Upstream
      Connection Speed 928 kbps 512 kbps
      Line Attenuation 62.0 db 31.5 db
      Noise Margin 7.8 db 12.0 db
      Last edited by lindley010; 21-08-10 at 09:12 PM.

    10. #9
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      Re: Constant De-syncing

      Just a thought, but would capping my line at 2 meg instead of 2.5 increase quality and stability?

    11. #10
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      Re: Constant De-syncing

      Perhaps. Even a cap to 1024/512 g.dmt (you're already on g.dmt) with target SNRs a little higher may help, but if there definitely is a line fault then it will only but mask the problem. I think having numerous routers sent out has only confirmed that the routers are most likely fine and it's time for another engineer visit to get the fault sorted.

     

     
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