Your forum username:
Do you already have an account?
Forgot your password?
  • Log in or Sign up


    Welcome to Sky User - The Unofficial Support Forum for everything Sky! - Proudly helping over 65k members.


    Advertisement

    Page 1 of 2 12 LastLast
    Results 1 to 10 of 18

    Noise margin drops in the evening

    This is a discussion on Noise margin drops in the evening within the Sky Broadband help forums, part of the Sky Broadband help and support category; Hey guys, is it normal for my noise margin to drop in the evening? My connection is stable dont get ...

    1. #1
      dankargo's Avatar
      dankargo is offline Sky User Member
      Exchange: Romford
      Broadband ISP: Sky Broadband Unlimited Fibre
      Router: Sagem F@ST 2504n
      Sky TV: Sky+HD box
      Join Date
      Aug 2011
      Location
      Romford
      Posts
      336
      Thanks
      27
      Thanked 5 Times in 4 Posts

      Noise margin drops in the evening

      Hey guys, is it normal for my noise margin to drop in the evening? My connection is stable dont get me wrong, I'm currently downloading at a good speed (423kB/Sec - much better then my previous ISP) but I noticed that from 6pm onwards my noise margin drops to around 4-5dB when during the day it is 5-6dB, is this normal?


      As of 10.00pm tonight;

      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 8065021 12131447 0 3151 46913 202:08:44
      LAN Up 10775189 7031737 0 155 13985 202:16:32
      WLAN Up 2693224 1884395 0 0 117 202:16:10
      ADSL Link Downstream Upstream
      Connection Speed 4047 kbps 510 kbps
      Line Attenuation 54.0 dB 32.6 dB
      Noise Margin 4.5 dB 12.5 dB


      Sky manually re-configured my line after DLM as it had set me as low as 2Mb. After a phone call they conducted some tests and eventually settled my line to 4047kbps / 510kbps. I did ask to be put back onto G.DMT but by the looks of things they've kept me on ADSL2+. I haven't made a fuss over it however as I have not had any problems with the connection itself, the sky tech team told me they configured the line for a slightly better speed but also to keep it stable which I have to admit they managed well as I havent had a single dropout in the connection yet. What concerns me most is the low noise margin, sometimes it will go as low as 4.0dB in the evening.


    2. Advertisement
    3. #2
      Isitme's Avatar
      Isitme is online now Sky User Moderator
      Exchange: Bannockburn
      Broadband ISP: Sky Broadband Unlimited
      Router: Sky Hub SR102
      Sky TV: Sky+ HD
      Join Date
      Dec 2006
      Location
      Central Scotland
      Posts
      33,883
      Thanks
      63
      Thanked 1,627 Times in 1,589 Posts

      Re: Noise margin drops in the evening

      It is quite normal for the noise margin to go down with the sun. If you are not dropping out, don't worry about it.

      TomD


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


      Useful Utilites

      Inssider 2/ TCPOptimiser /Test Socket

      Note - When downloading always select the Custom install or you will end up with stuff you don't want.





    4. #3
      Cloud's Avatar
      Cloud is offline Sky User Member
      Exchange: Norwich North (EANCN)
      Broadband ISP: Sky Broadband Unlimited
      Router: Non Sky Router
      Sky TV: Sky+HD box
      Join Date
      Apr 2011
      Location
      Norwich
      Posts
      62
      Thanks
      2
      Thanked 0 Times in 0 Posts

      Re: Noise margin drops in the evening

      I get that all the time in the evening with my 2304n. Currently my snr is 0.4db and the internet is quite unstable. I'm using a filtered faceplate, but I find with a microfilter in the test socket it aint as bad.
      XBL: CloudSTRIFE IIx
      PSN: fps_cloud

    5. #4
      OldFourEyes's Avatar
      OldFourEyes is offline Sky User Member
      Exchange: 01260
      Broadband ISP: Max
      Router: Netgear V1 DG834GT
      Sky TV:
      Join Date
      Feb 2008
      Posts
      85
      Thanks
      1
      Thanked 2 Times in 2 Posts

      Re: Noise margin drops in the evening

      The noise margin on my Sagem 2504n also drops in the evening but, in addition, the connection speed drops from 10.2Mb to 5.2Mb. Not exactly a disaster, but the most annoying thing is that it doesn't reset itself the next day.

      When I check the next morning the connection speed is still 5.2Mb but the noise ratio is 21db until I reboot the router to get back to 10.2Mb and the noise margin reverts to around 7.2db.

      Contention ratio?

    6. #5
      Sky eService Team's Avatar
      Sky eService Team is offline Sky Team
      Exchange:
      Broadband ISP: Sky Corporate
      Router: Non Sky Router
      Sky TV: Sky+ HD
      Join Date
      Mar 2011
      Location
      BSkyB
      Posts
      99
      Thanks
      0
      Thanked 17 Times in 11 Posts

      Re: Noise margin drops in the evening

      Hi OldFourEyes,

      It is nomal to see the margin rise at these times due to the volume of traffic through broadband at it's peak.

      The fluctuation of 21 db and this not going down might suggest a faulty micro-filter. It would be worthwhile trying another to see if this the fault. I would also suggest testing this through your test socket.

      There is a troubleshooting section within our help centre, that can take you through doing this and any further troubleshooting you can try.

      If none of this helps there might be a fault on the line itself that we would need to check. In this case you would be required to contact your ISP, if you are with Sky, please see the contact us section of the Sky help centre whichi can direct you to the best person to speak to.
      Sky eService Team

      Sky Help Centre http://www.sky.com/help
      My Sky and Sky iD https://mysky.sky.com

    7. #6
      OldFourEyes's Avatar
      OldFourEyes is offline Sky User Member
      Exchange: 01260
      Broadband ISP: Max
      Router: Netgear V1 DG834GT
      Sky TV:
      Join Date
      Feb 2008
      Posts
      85
      Thanks
      1
      Thanked 2 Times in 2 Posts

      Re: Noise margin drops in the evening

      Quote Originally Posted by Sky eService Team View Post
      Hi OldFourEyes,

      It is nomal to see the margin rise at these times due to the volume of traffic through broadband at it's peak.

      The fluctuation of 21 db and this not going down might suggest a faulty micro-filter. It would be worthwhile trying another to see if this the fault. I would also suggest testing this through your test socket.

      There is a troubleshooting section within our help centre, that can take you through doing this and any further troubleshooting you can try.

      If none of this helps there might be a fault on the line itself that we would need to check. In this case you would be required to contact your ISP, if you are with Sky, please see the contact us section of the Sky help centre whichi can direct you to the best person to speak to.
      Hi

      Thanks for the suggestions. As I mentioned elsewhere, I live in a block of 4 apartments and there is only one line into the block so, effectively, each apartment is on an extension, therefore no test socket unfortunately.

      I fitted a filtered faceplate which seems OK during the day so my options at the moment are limited. I could have a direct line installed (expensive!) so I suppose I'll hang on for now and see what happens when fibre becomes available (also expensive?).

      It's not bad for 7.50 per month though. At one time I was happily paying BT 29.95 for 500kb!

    8. #7
      RUNITDIRECT's Avatar
      RUNITDIRECT is offline Sky User Member
      Exchange:
      Broadband ISP: Not on Sky
      Router: Non Sky Router
      Sky TV: Sky Basic
      Join Date
      Jun 2008
      Location
      Shropshire
      Posts
      1,248
      Thanks
      0
      Thanked 81 Times in 77 Posts

      Re: Noise margin drops in the evening

      Quote Originally Posted by OldFourEyes View Post
      Hi

      As I mentioned elsewhere, I live in a block of 4 apartments and there is only one line into the block so, effectively, each apartment is on an extension, therefore no test socket unfortunately.

      I fitted a filtered faceplate which seems OK during the day so my options at the moment are limited. I could have a direct line installed (expensive!) so I suppose I'll hang on for now and see what happens when fibre becomes available (also expensive?).
      Unless all 4 apartments are sharing one line that is not correct! The lack of test socket does not mean you do not have a direct line, it means you do not have an NTE5. You will probably find a central DP is serving the apartments. If you only have one telephone socket then there is little you can do, however if you have extensions then things may be improved. However, as you say you have a filtered faceplate but no test socket then I am guessing you have something like this?
      run-IT-direct, For all your networking, ADSL & telecom requirements.

    9. #8
      RUNITDIRECT's Avatar
      RUNITDIRECT is offline Sky User Member
      Exchange:
      Broadband ISP: Not on Sky
      Router: Non Sky Router
      Sky TV: Sky Basic
      Join Date
      Jun 2008
      Location
      Shropshire
      Posts
      1,248
      Thanks
      0
      Thanked 81 Times in 77 Posts

      Re: Noise margin drops in the evening

      Quote Originally Posted by Cloud View Post
      I get that all the time in the evening with my 2304n. Currently my snr is 0.4db and the internet is quite unstable. I'm using a filtered faceplate, but I find with a microfilter in the test socket it aint as bad.
      What faceplate are you using?
      run-IT-direct, For all your networking, ADSL & telecom requirements.

    10. #9
      Cloud's Avatar
      Cloud is offline Sky User Member
      Exchange: Norwich North (EANCN)
      Broadband ISP: Sky Broadband Unlimited
      Router: Non Sky Router
      Sky TV: Sky+HD box
      Join Date
      Apr 2011
      Location
      Norwich
      Posts
      62
      Thanks
      2
      Thanked 0 Times in 0 Posts

      Re: Noise margin drops in the evening

      XTE-2005, the one from ADSL Nation.
      XBL: CloudSTRIFE IIx
      PSN: fps_cloud

    11. #10
      RUNITDIRECT's Avatar
      RUNITDIRECT is offline Sky User Member
      Exchange:
      Broadband ISP: Not on Sky
      Router: Non Sky Router
      Sky TV: Sky Basic
      Join Date
      Jun 2008
      Location
      Shropshire
      Posts
      1,248
      Thanks
      0
      Thanked 81 Times in 77 Posts

      Re: Noise margin drops in the evening

      Quote Originally Posted by Cloud View Post
      XTE-2005, the one from ADSL Nation.
      Thought you may say that & what filter are you using that gives better results?
      run-IT-direct, For all your networking, ADSL & telecom requirements.

     

     
    Page 1 of 2 12 LastLast

    Tags for this Thread

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •  
    SkyUser - Copyright © 2006-2014. SatDish and NewsreadeR | SkyUser is in no way affiliated with Sky Broadband / BSkyB
    RIPA NOTICE: NO CONSENT IS GIVEN FOR INTERCEPTION OF PAGE TRANSMISSION