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371 posts

Ultimate Geek


  # 866039 25-Jul-2013 17:37
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RickW: Hay guys we have just recently joined snap for vdsl and voip and are looking for any advice of how to increase our speed. From the demarc box on the side of the house we have a single cat 6 cable going to a dedicated rj45 jack that the fritzbox is connected to. the chorus tech said that we are about 400m from the roadside cabinet but our sync rates are only 20 down and 6 up. Here are the line stats. Any advice is appreciated.

Receive Direction Send Direction
Max. DSLAM throughput kbit/s 70000 10360
Min. DSLAM throughput kbit/s 360 360
Attainable throughput kbit/s 20092 6312
Current throughput kbit/s 20032 6288

Latency fast fast
Bitswap on off
Impulse Noise Protection 0.1 0.1

Signal-to-noise ratio dB 12 12
Line attenuation dB 22 102
Carrier record A43 A43
Profile 8b

Why not take some screenshots of the stats page and pop them on here,

250 posts

Master Geek


  # 866046 25-Jul-2013 17:48
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Ok sure, here you go





 
 
 
 


3318 posts

Uber Geek

Trusted

  # 866067 25-Jul-2013 18:05
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@RickW: How is the cat6 cable wired in with everything else? (i.e. is everything else disconnected?)

250 posts

Master Geek


  # 866068 25-Jul-2013 18:06
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Hi, yes everything else has been disconnected.

371 posts

Ultimate Geek


  # 866069 25-Jul-2013 18:08
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that line attenuation is way to high. i am surprised chorus actually went ahead with the install. limit for vdsl install is 10.8dB

24 posts

Geek


  # 866070 25-Jul-2013 18:09
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Recently got VDSL2, I went from ADSL2 @ 12 Mbps down to 18 Mbps down / 9 Mbps up and after having VDSL for a week, the guy from Chorus finally came today and installed the splitter (also had to get an electrician to replace some cabling) and didn't make much of a difference (went from 18 to 19 Mbps). I was hoping to get more of a speed boost, anything jump out as a problem?

DSL
Specrum

3318 posts

Uber Geek

Trusted

  # 866071 25-Jul-2013 18:12
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@RickW: Sorry, just to confirm, there are no other cables/jackpoints connected at all. So the incoming pair connects directly to cat6 cable and nothing else, which runs straight to your RJ45? 

If that's the case (sounds like it is) then I'd say you've either got a lot more than 400m of cable to your cabinet... or something is wrong outside your property (or rather somewhere between the demarc and cabinet)

 
 
 
 


250 posts

Master Geek


  # 866073 25-Jul-2013 18:13
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after we were switched to vdsl our line attenuation jumped from 11 to 22 is that normal to have that big of a jump

250 posts

Master Geek


  # 866074 25-Jul-2013 18:15
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Hi, yes direct from to the chorus cable to the cat 6 to the rj45 to the fritzbox

250 posts

Master Geek


  # 866075 25-Jul-2013 18:16
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Also the chorus tech said he was out of master filters do we need to have one installed

393 posts

Ultimate Geek


  # 866087 25-Jul-2013 18:31
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RickW: after we were switched to vdsl our line attenuation jumped from 11 to 22 is that normal to have that big of a jump

It's normal to have an increase, but that's more than I expect. I'd expect something around 15-17 db. From the graphs the higher frequencies seem to be particularly attenuated. Maybe there's a lot more cable between you and the cabinet or perhaps there's an issue with that cable.

Also the chorus tech said he was out of master filters do we need to have one installed

If there is nothing else on the line then that won't make any difference. If you do get one installed get the tech to double check everything, though I suspect the issue is outside your property.

250 posts

Master Geek


  # 866091 25-Jul-2013 18:36
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Ok sweet, I'll get snap to chase up with chorus and see what can be done, thanks guys

194 posts

Master Geek


  # 866360 26-Jul-2013 09:29
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RickW: Ok sweet, I'll get snap to chase up with chorus and see what can be done, thanks guys


If Snap ran a pre-qual test on your lines they should be able to pull those records and tell you how much you 'had' (give or take), before you went onto VDSL. This should give your a fair representation of what it should be now. If they see a significant difference it should be more than a reasonable request for them to investigate what the issue is. Likely problem is a faulty port. Or you could simply be further from the cabinet (in regards the which way the cable runs in your local loop) in cable length than expected.

267 posts

Ultimate Geek


  # 866366 26-Jul-2013 09:34
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mikenzb: that line attenuation is way to high. i am surprised chorus actually went ahead with the install. limit for vdsl install is 10.8dB


Can anyone clarify this please? Most of the comments in this thread refer to a figure in the low to mid teens being normal/acceptable. Or is this statement talking about something else?

194 posts

Master Geek


  # 866383 26-Jul-2013 09:45
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smac:
mikenzb: that line attenuation is way to high. i am surprised chorus actually went ahead with the install. limit for vdsl install is 10.8dB


Can anyone clarify this please? Most of the comments in this thread refer to a figure in the low to mid teens being normal/acceptable. Or is this statement talking about something else?


What I think hes most likely referring to is the current Attenuation? mid-high 'teen' attenuation is acceptable while on VDSL. Not before someone goes onto it. This is because of the jump in attenuation when you go onto VDSL. Degrading the service for others aswell.

So while he had approximately 11dB attenuation down (seriously boarderline for going onto VDSL) before he went onto VDSL, hes now on 22dB which is very high.... I really do mean that too..

EDIT: Another correction, I mean low-mid teens for attentuation

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