VDSL Performance & Tuning

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#806187 27-Apr-2013 01:58

Well, looks like you're on DLM-1! Errors are very good as well.

Your sync speed isn't as good as I think it could be tho. Were you going to do any wiring changes?

Damager

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#806193 27-Apr-2013 02:18

SamF: Well, looks like you're on DLM-1! Errors are very good as well.

Your sync speed isn't as good as I think it could be tho. Were you going to do any wiring changes?

Sounds encouraging, thanks Sam.

I'm going to request for a master splitter install via my ISP as soon as possible.

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SamF

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#806252 27-Apr-2013 09:30

splitter installs are pretty easy to do yourself if you want to save $400!

stevehodge

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#806284 27-Apr-2013 11:13

SamF: Well, looks like you're on DLM-1! Errors are very good as well.

Your sync speed isn't as good as I think it could be tho. Were you going to do any wiring changes?

I agree, that's DLM-1 but the sync rate looks low. It's only 2MBps higher than when you were on DLM-6. I'd leave it a couple of days and then do a resync as it might just be a sub-par sync (which does seem happen sometimes). Don't do too many resyncs though as we think that's a factor in DLM kicking people off DLM-1.

I think your modem is not reporting the attenuation correctly. I don't think it could ever be 0 measured in 0.1db increments. What was your attenuation on ADSL?

Damager

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#806686 28-Apr-2013 12:34

stevehodge:
SamF: Well, looks like you're on DLM-1! Errors are very good as well.

Your sync speed isn't as good as I think it could be tho. Were you going to do any wiring changes?

I agree, that's DLM-1 but the sync rate looks low. It's only 2MBps higher than when you were on DLM-6. I'd leave it a couple of days and then do a resync as it might just be a sub-par sync (which does seem happen sometimes). Don't do too many resyncs though as we think that's a factor in DLM kicking people off DLM-1.

I think your modem is not reporting the attenuation correctly. I don't think it could ever be 0 measured in 0.1db increments. What was your attenuation on ADSL?

Thanks for the feedback Steve! When I was on ADSL My attenuation was 3 down and 2 up. I've had VDSL now for 2 weeks and the attenuation has been 0 since the start. Done a few power cycles but it never changes.

SamF

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#806694 28-Apr-2013 12:41

Yeah, your latest attenuation figure is definitely incorrect then. You can expect 5-7db downstream attenuation rate for VDSL based on your previous ADSL figures. Is there a firmware update you could try applying for your router? This might resolve the issue.

stevehodge

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#806703 28-Apr-2013 12:54

Damager: When I was on ADSL My attenuation was 3 down and 2 up. I've had VDSL now for 2 weeks and the attenuation has been 0 since the start. Done a few power cycles but it never changes.

That sounds pretty close to my connection which showed 2 db on ADSL, 4-5 db on VDSL 8b and 6-7 db on VDSL 17a. On 8b DLM-1 I was typically getting around 44-45 Mbps sync. So I think your sync is definitely a bit low. Let us know if the master filter makes any difference when you get it installed.

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Damager

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#808147 30-Apr-2013 17:58

Hey Guys

Master splitter now installed and definite increase in sync speed

https://dl.dropboxusercontent.com/u/98526755/Splitter%20Speed.jpg

SamF

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#808160 30-Apr-2013 18:13

Nice! It may well go up from there too. If not you can always do some extra tweaking :)

cokeman2

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#809929 2-May-2013 08:07

hello

i been trying to put my snr margin down by using the fritzbox export editor ...it successfully updates the fritzbox but the snr still on 12 no matter what i try -10 or - 30 etc
i am on adsl connection...

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sidefx

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#809942 2-May-2013 08:35

@cokeman2 - you might want to start a new thread for that. Most people who frequent this thread will be on VDSL so won't have an ADSL line to test on. Have you add the "no checks"setting at the top of the file though?

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cokeman2

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#810018 2-May-2013 10:17

sidefx: @cokeman2 - you might want to start a new thread for that. Most people who frequent this thread will be on VDSL so won't have an ADSL line to test on. Have you add the "no checks"setting at the top of the file though?

i think i might have found the the problem cant see "no check" in that file no where ....hmmm don't know if its worth starting another thread, but then again it be handy for sum one who wont need to go threw 70 + pages like i did

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sidefx

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#810032 2-May-2013 10:27

In SamF's first post read the section "Increasing Sync Speeds" it has the instructions including adding "NoChecks=yes" at the top of the file so the Fritzbox will actually load it once modified... I don't think the exported file from the fritzbox ever has this, so you will need to add it each time you export and modify the file. Or just save a copy to your harddrive and use at as your baseline.

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SamF

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#810036 2-May-2013 10:34

Taking another angle on this, you have some SERIOUS line issues there mate! I think if you get those sorted you'll get much better results than simply reducing your SNRM!

cokeman2

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#810041 2-May-2013 10:44

SamF: Taking another angle on this, you have some SERIOUS line issues there mate! I think if you get those sorted you'll get much better results than simply reducing your SNRM!

probably true, but all i did was swap my telecom Technicolor router to fritzbox (went from maxnet to snap not that should have any issues ) telecom connected at 3400-3300 kbits/s while fritz is at 2800-3100 ....
i have got a direct broadband connection to my house (no filters) ... dont know what else i can do with the line issues anymore....

i did put the NoCheck = yes still no deference still at 12 ..might start another thread or just give up lol

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