Line attenuation changed by 18db, very confused!
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Line attenuation changed by 18db, very confused!
05-12-2011 7:46 PM
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So my line running on my old Linksys WAG200G used to sync as follows which I was very happy with, it was extremely stable:
Linksys WAG200G
DSL Status: Connected
DSL Modulation Mode: G.dmt
DSL Path Mode: Interleaved
Downstream Rate: 8128 kbps
Upstream Rate: 832 kbps
Downstream Margin: 9 db
Upstream Margin: 14 db
Downstream Line Attenuation: 29 db
Upstream Line Attenuation: 7.5 db
Downstream Transmit Power: 12 db
Upstream Transmit Power: 5 db
I then had a fault on my line, this was 'fixed' by BT but since then the router stats on exactly the same router, new RJ11, new microfilter looked like the following:
Linksys WAG200G
DSL Status: Connected
DSL Modulation Mode: G.dmt
DSL Path Mode: Interleaved
Downstream Rate: 6496 kbps
Upstream Rate: 832 kbps
Downstream Margin: 4 db
Upstream Margin: 8 db
Downstream Line Attenuation: 41 db
Upstream Line Attenuation: 13 db
Downstream Transmit Power: 11 db
Upstream Transmit Power: 5 db
As you can see my downstream attenuation has jumped up 12db! Whilst this seems like alot its not high enough and my sync isn't low enough to raise it as a fault. Also my SNR now flicks between 0 - 6db, where as it used to be happily around 9db.
Anyway as I somehow (and probably stupidly thought) ill try another router to help the issues. So I purchased a DGTeam flashed Netgear DG834GT as ive been reading good things about them. I've plugged it in tonight and without tweaking it my speed has increased to 6720Kbps and my SNR is now stable at 6db rather than flicking around all over the place. However my downstream line attenuation has increased further! Its now sitting at 47db and my downsteam is now 23db! Im really confused why it would jump up this high considering all i've done is plug in a different router.
SNR before and after the switch of routers:
http://imageshack.us/photo/my-images/10/capturemwd.png/
Netgear DG834GT
http://imageshack.us/photo/my-images/440/capture2ow....
Also as im new to Netgear routers and the Routerstats app, can someone please explain this graph to me, it looks like my attenuation flys up dramatically for whatever reason, is this normal? I would assume not.
http://imageshack.us/photo/my-images/811/capture3e.png/
Can anyone please help diagnose this for me? I'm lost to say the least.
Many thanks
Dan
Re: Line attenuation changed by 18db, very confused!
05-12-2011 7:51 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 7:57 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 7:59 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:09 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:10 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:16 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:18 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:21 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:22 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:23 PM
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3Mb FTTC
https://portal.plus.net/my.html?action=data_transfer_speed
Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:25 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:26 PM
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Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:29 PM
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According to http://www.kitz.co.uk/adsl/max_speed_calc.php I should only be able to get 5536 kbps, im currently sitting happy at 8128 kbps with my SNR not dropping below 1.2db. According to the same site, my 18db increase shows a line length increase of 1.3km.... lol
Re: Line attenuation changed by 18db, very confused!
05-12-2011 8:33 PM
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