VDSL Performance & Tuning

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1558 posts

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#742759 10-Jan-2013 12:47

Well, that's a bit better. On -5db now:

CRCs sitting around 1.7 after an hour or so which is well acceptable. Hopefully it stays down that low!

Speed is still pretty sweet as well:

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Dairusire

294 posts

Ultimate Geek

#742792 10-Jan-2013 13:25

How far away are you from the cabinet btw SamF?

SamF

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#742800 10-Jan-2013 13:34

By road - about 300m. Hard to say how long the copper is, but my attenuation (10db - same as yours) suggests it's around 6-700m - which I find hard to believe. In reality it's probably somewhere between those 2 figures.

Dairusire

294 posts

Ultimate Geek

#742836 10-Jan-2013 14:29

SamF: By road - about 300m. Hard to say how long the copper is, but my attenuation (10db - same as yours) suggests it's around 6-700m - which I find hard to believe. In reality it's probably somewhere between those 2 figures.

Hmm okay, well how much does a new line drop and masterfilter generally help? I'm probably going to get one anyway as I think there might be some bad wiring in the house.

SamF

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#742842 10-Jan-2013 14:40

I'd say it would help significantly, especially with bad wiring!! However, since you probably don't want to spend too much at this point if you're about to go fibre, simply disconnecting the unused phone jacks would probably give you a pretty good speed boost.

Dairusire

294 posts

Ultimate Geek

#742843 10-Jan-2013 14:43

SamF: I'd say it would help significantly, especially with bad wiring!! However, since you probably don't want to spend too much at this point if you're about to go fibre, simply disconnecting the unused phone jacks would probably give you a pretty good speed boost.

Nah we are ages out from fibre from what I know... We are in the 'fibre' zone, but no knowen time for when it's actually going to be laid. Believe me, if fibre was only something like 4-6 months off then I'd deal with what I've got disconnect the current ports and just run with it, until I got fibre :P

SamF

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#742853 10-Jan-2013 15:14

Ah right, I'd go the full monty then; but if you're going naked (lol, naked, full monty - get it! :D) then a splitter is a waste of time as it's designed for use with clothed lines, just get a new twisted pair cable run from the demark to your DSL jack (or direct to the router!).

sidefx

3700 posts

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#742888 10-Jan-2013 16:11

SamF: ...just get a new twisted pair cable run from the demark to your DSL jack (or direct to the router!).

+1. I had a master filter from ADSL days but removed it for VDSL - I just found where the incoming line enters the house (my house has no ETP - fortunately it enters the house in a cupboard under our stairs) cut a small hole in the gib, pulled the line out there, cut it and scotchlocked the appropriate pair of half a short ethernet cable directly to that. Other end now plugs direct into the fritzbox, which just lives in said cupboard. I thought about putting in a proper jackpoint, but since it's in a cupboard I haven't bothered yet. Seems to work pretty well so have left it as is.

"I was born not knowing and have had only a little time to change that here and there." | Octopus Energy | Sharesies
- Richard Feynman

Dairusire

294 posts

Ultimate Geek

#742891 10-Jan-2013 16:23

SamF: Ah right, I'd go the full monty then; but if you're going naked (lol, naked, full monty - get it! :D) then a splitter is a waste of time as it's designed for use with clothed lines, just get a new twisted pair cable run from the demark to your DSL jack (or direct to the router!).

How much could this cost then? Would CoffeeBaron be able to do it or would he only be able to do the inside from the demarc?

SamF

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#742894 10-Jan-2013 16:28

I imagine that Chorus / Telecom would have to run a new cable from the street to the demark (if you wanted to get that re-run), but CoffeeBaron would be able to do the other work I imagine (assuming you live somewhere that he covers). I'd get the internal work done first, then see what the results are and go from there.

SamF

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#743100 11-Jan-2013 00:06

Right, first post updated with SNRM tweaking info plus a few other misc updates.

That pretty much completes all the info I wanted to put in it now! The only thing missing is determining what the maximum acceptable DLM-1 CRCPM rate is, but I have a line into a contact who is trying to find this out for me. I've also removed the 'telnet' section (not that there was much of one), as I haven't had any reason to use it to do anything yet. If I ever do, I'll add that in.

Zeon

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#743102 11-Jan-2013 00:30

Has anyone had trouble with the TG789vn locking up? I've just tried to use one previously used in bridging mode as a normal router and after about 5 minutes it locks up, lights all solid etc. When the wireless is enabled this is more like 2 mins.

I'm using 8.4.2q firmware and can't seem to download new ones from the technicolour website. I have emailed connectplay where I bought it from. I'm hoping its firmware related but maybe the unit is faulty?

Speedtest 2019-10-14

SamF

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#743119 11-Jan-2013 07:27

Sounds a bit faulty to me!

Dairusire

294 posts

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#743129 11-Jan-2013 08:38

Zeon: Has anyone had trouble with the TG789vn locking up? I've just tried to use one previously used in bridging mode as a normal router and after about 5 minutes it locks up, lights all solid etc. When the wireless is enabled this is more like 2 mins.

I'm using 8.4.2q firmware and can't seem to download new ones from the technicolour website. I have emailed connectplay where I bought it from. I'm hoping its firmware related but maybe the unit is faulty?

Yeah, I second the above motion. sounds faulty.

SamF

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#743242 11-Jan-2013 12:08

Well, 24hrs with the -5db tweak and things are looking pretty stable with a CRCPM of 1.78:

Pretty happy with that! I think I've found my optimal SNRM tweak level!

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