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    Odd Test Socket Stats

    This is a discussion on Odd Test Socket Stats within the Sky Broadband help forums, part of the Sky Broadband help and support category; I've been thinking about getting a filtered faceplate, so was having a look at the stat difference between the master ...

    1. #1
      A.D's Avatar
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      Odd Test Socket Stats

      I've been thinking about getting a filtered faceplate, so was having a look at the stat difference between the master socket and test socket. Plugging into the test socket the first time showed no difference in stats, but when I plugged back into the master socket, I noticed an improvement in noise margin.

      The results below are typical of what I found swapping between the two a few times (apart from once when the stats from the master socket matched the test socket):

      Test Socket

      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 7 4 0 0 0 0:00:32
      LAN 23 0 0 0 0 0:20:35
      WLAN 13750 10986 0 58 0 0:20:10

      ADSL Link Downstream Upstream
      Connection Speed 384 kbps 415 kbps
      Line Attenuation 67.0 db 38.8 db
      Noise Margin 8.9 db 16.0 db

      Master Socket

      Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
      WAN PPPoA 7 4 0 0 0 0:00:29
      LAN 23 0 0 0 0 0:24:49
      WLAN 18585 14792 0 0 0 0:24:24

      ADSL Link Downstream Upstream
      Connection Speed 384 kbps 415 kbps
      Line Attenuation 67.5 db 38.9 db
      Noise Margin 13.5 db 15.9 db

      Anyone know what could cause this?


      Two other things:

      I've noticed the attenuation creeping up over time, from around 62ish db when the broadband was installed, to 65ish db and now to 67 db. Is this normal?

      It has been much more than 10 days, but according to the sky website, line testing still has not completed:
      Line testing is currently in progress.

      Testing on your broadband connection began on 11/07/2010 and will be completed within 10 days.
      The connection speeds haven't changed in some time.


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    3. #2
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      Re: Odd Test Socket Stats

      When you remove the faceplate, are all the other phone points dead?

      Follow the main BT wire coming in from outside, does it go into anything else before the master socket, if so, a few pictures would be helpful.

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      Re: Odd Test Socket Stats

      All extensions go dead with the faceplate removed.

      The master socket is sunk into the wall, with no cable visible, so I don't know for sure what path the incoming cable takes. However, on the other side of the wall from the master socket (outside the house) there is a BT pipe leading into the ground; I'd assume the cable comes directly from there.
      Attached Thumbnails Attached Thumbnails Odd Test Socket Stats-sdc11449-medium-.jpg  

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      Re: Odd Test Socket Stats

      How many sockets do you have? and are there wires connected to the front of the faceplate?

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      Re: Odd Test Socket Stats

      There are 3 extensions, plus the master.

      One of the filters supplied by sky is connected to the front of the faceplate, which the phone and modem then connect to directly.

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      Re: Odd Test Socket Stats

      Only the master socket actually has anything plugged into it.

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      Re: Odd Test Socket Stats

      You have an XNTE (external NTE), which is what is in your picture.

      It basically means your 'Master Socket' isn't strictly a master socket, as the line comes out of the ground and is joined in that grey plastic thing, using gel connectors, to another wire that then runs through your wall to your 'first socket'.

      IMHO it's a stupid way of doing it as you're just adding another 'join' which surely is going to contribute to loss/noise on the line, however small that may be.

      I have exactly the same set-up, and also found that my attenuation has gradually been creeping up, long after line testing had completed (three times now).
      Mine started at around 58db and is now sitting at 61.5 db.

      I've had 4096 kbps up and 956 kbps down, but Sky keep capping me at 3072 kbps down and 796 kbps up.

      Whilst you're not allowed (I don't think so anyway) to mess with the XNTE, I did unscrew it and have a little look. The inside was utterly filthy with spiders webs and the wiring was all covered in black grease and dust, as well as the wiring going off into my house being the cheapest, thinnest stuff I have ever seen.

      I gave mine a quick clean but it didn't make any difference.
      I have told Sky on numerous occasions but they won't do anything other than re-initiate line testing.

      I'm using an XTE-2005 filtered faceplate, but in all honesty, for me that is, it makes very little difference.

      Therefore I shall continue to look forward to BT Infinty in 3010.

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      Re: Odd Test Socket Stats

      Quote Originally Posted by Dazeon View Post
      You have an XNTE (external NTE), which is what is in your picture.

      It basically means your 'Master Socket' isn't strictly a master socket, as the line comes out of the ground and is joined in that grey plastic thing, using gel connectors, to another wire that then runs through your wall to your 'first socket'.
      Incorrect, the picture shows an old style DP, nothing more. An XNTE looks like this :-



      If the building is equiped with extensions you can simply replace the 1st socket from the XNTE(if you have one!) with an NTE5 and filtered faceplate to gain the benefits of centralised filtering.
      run-IT-direct, For all your networking, ADSL & telecom requirements.

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      Re: Odd Test Socket Stats

      I have exactly the same set-up, and also found that my attenuation has gradually been creeping up, long after line testing had completed (three times now).
      Mine started at around 58db and is now sitting at 61.5 db.
      Your attenuation has risen, like the OPs, because you have been moved from G.DMT to ADSL2+. This increases the attenuation by anything from 1.5 to 4 dbs. If you now have a lower speed than you first connected, you should call Sky and ask them to try your line on G.DMT(ADSL). The same applies to the OP. This often performs better on long lines than ADSL2+ which you are now on.

      If the junction outside your house was covered with grease and spider webs, it will not be an XNTE but simply a junction box. Where XNTEs are used you will not normally have a master socket, ie, one with a capacitor and arrestors, inside your house, all the sockets will be the plain extension type. I agree XNTEs are a step back for users as it is difficult and probably against BTs regulations, to do a proper external line test.

      TomD


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


      Useful Utilites

      http://www.nirsoft.net/utils/wifi_information_view.html/ TCPOptimiser /Test Socket

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





     

     
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