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Author Topic: VDSL patch leads  (Read 3347 times)

hushcoden

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VDSL patch leads
« on: December 07, 2019, 09:26:44 AM »

I'd like to understand if anyone has ever tried those cat5e or cat6 twisted pair cables for VDSL which (allegedly) should provide less errors and perform better than a standard flat DSL cable...

I decided to give it a try and I bought 3x different cables from 3x different vendors and all of them sync 2/2.5 Mb/s less than the standard flat cable  ???

Curious to know if anyone has had similar experience...
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jelv

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Re: VDSL patch leads
« Reply #1 on: December 07, 2019, 09:46:50 AM »

1. Have you gone back to the old flat cable and confirmed it is still syncing at the higher speed?

2. Did you do a resync with the old cable to confirm the speed of a fresh sync before you started experimenting? If your last sync was in the middle of the day when background noise is low and you did your experiments in the late evening then noise margin may be lower and so a new sync using any cable would be slower.

3. If you did a lot of disconnects and resyncs when you swapped cables in a short space of time, DLM may have taken the hump and put you on a higher target noise margin which would reduce your speeds.
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hushcoden

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Re: VDSL patch leads
« Reply #2 on: December 07, 2019, 01:13:47 PM »

Yes back to the flat cable and sync is higher... But I'm not worried to lose 2Mb/s, just interested in understanding whether the cat5e/cat6 could really reduce the line errors...
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Alex Atkin UK

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Re: VDSL patch leads
« Reply #3 on: December 07, 2019, 01:41:44 PM »

Yes they can, but it depends where your line is picking up interference from.

In most cases interference will happen on the BT side, outside the house.

If the flat cable syncs better, I'd stick with it.
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dee.jay

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Re: VDSL patch leads
« Reply #4 on: December 10, 2019, 08:21:05 AM »

Never tried CAT5/6, though I did buy the shortest RJ11 cables I could and gained 2Mbit that way. Worth it.
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hushcoden

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Re: VDSL patch leads
« Reply #5 on: December 10, 2019, 09:24:48 AM »

And could the difference in sync speed be related somehow to the fact that the standard flat cable is a 2-pin cable whereas the cat5e ones are 4-pin cables?
« Last Edit: December 10, 2019, 09:59:39 AM by hushcoden »
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Alex Atkin UK

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Re: VDSL patch leads
« Reply #6 on: December 10, 2019, 01:20:29 PM »

I suppose its possible those extra wires could act as an antenna.  I specifically bought short RJ11 cables designed for DSL.
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hushcoden

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Re: VDSL patch leads
« Reply #7 on: December 10, 2019, 02:05:27 PM »

I suppose its possible those extra wires could act as an antenna.  I specifically bought short RJ11 cables designed for DSL.
Something like this would be right ?
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Alex Atkin UK

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Re: VDSL patch leads
« Reply #8 on: December 10, 2019, 02:46:30 PM »

Something like this would be right ?

I honestly wouldn't bother, there's a slim chance it will make any difference at all.
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neil

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Re: VDSL patch leads
« Reply #9 on: December 11, 2019, 07:18:22 PM »

I'd like to understand if anyone has ever tried those cat5e or cat6 twisted pair cables for VDSL which (allegedly) should provide less errors and perform better than a standard flat DSL cable...

I decided to give it a try and I bought 3x different cables from 3x different vendors and all of them sync 2/2.5 Mb/s less than the standard flat cable  ???

Curious to know if anyone has had similar experience...
it all depends on the length of cable
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neil

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Re: VDSL patch leads
« Reply #10 on: December 11, 2019, 07:19:31 PM »

Yes back to the flat cable and sync is higher... But I'm not worried to lose 2Mb/s, just interested in understanding whether the cat5e/cat6 could really reduce the line errors...
yes it can it is twisted pair less cross talk
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neil

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Re: VDSL patch leads
« Reply #11 on: December 11, 2019, 07:23:04 PM »

me myself is using cat6 cable from telephone drop wire to splitter and from splitter to modem. These twisted pair cables are designed for higher frequencies and twisted pair cables are better less cross talk 
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hushcoden

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Re: VDSL patch leads
« Reply #12 on: December 11, 2019, 07:57:56 PM »

Thanks all, always good when I learn new stuff  ::)
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neil

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Re: VDSL patch leads
« Reply #13 on: December 11, 2019, 09:12:06 PM »

i built these cables myself i bought 10-20 6p6c rj11 or rj12 connectors and cat6 cable. I tired both 23awg and 24awg cat6 cables zero difference because of few meters length so i suggest go with 24awg cat6 cable solid copper core and here is good guide 
https://www.youtube.com/watch?v=z3SESmJ6W-M
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Alex Atkin UK

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Re: VDSL patch leads
« Reply #14 on: December 12, 2019, 05:48:11 PM »

it all depends on the length of cable

It doesn't all depends on cable length, there is also conductor size, conductor quality, quality of termination, quality of contacts.

But mostly all moot if you aren't having any interference in the house to begin with.
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