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Standard User haz1000
(newbie) Sat 13-Oct-12 15:37:36
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attenuation differences help


[link to this post]
 
Hi all been recommended to post here from acpsd775 as youíve helped him loads

On ADSL you could kind of guess how long you line was with attenuation and guess a rough speed and if a friend had the same/similar attenuation as you, you would both have similar speeds give or take a little,

Now dose the same apply with VDSL my friends attenuation is 22 heís currently on 70/24 when he was on the 40/10 product he synced at 48/12 but it was capped at 40/10 i suppose this was for the through put to be as max as possible well anyway to the point
My connection has a 24 attenuation but on the 40/10 packages my router is syncing at 27/3.5 now TBH I donít see how the difference of 22 to 24 will cause a 21 meg difference in speed.

My friendís current DSL stats (ACPSD775)
70288/24304 kbps
Noise margin upstream: 5 db
Output power downstream: 0 db
Attenuation upstream: 0 db
Noise margin downstream: 6 db
Output power upstream: 10 db
Attenuation downstream: 22 db

My current stats

27056/3684 kbps
Noise margin upstream: 6 db
Output power downstream: 2 db
Attenuation upstream: 0 db
Noise margin downstream: 6 db
Output power upstream: 10 db
Attenuation downstream: 24 db

PS i know his stats are for the higher packages but the attenuation was the same on the 40/10

so can anyone help as to why ive got such a slow speed in comparison

I was thinking about upgrading to the super fast products (max line can go) on the off change I gets similar speeds to my friend but with the poor performance of the 40/10 i don't want to risk it because littlebigone have a 1 way street on upgrades if you still don't get over 40meg its tough you stuck paying the extra tenner

Little info
Im with littlebigone broadband fttc
My speed estimate on their website is 40/10 & 67.5/20 (standard and uncapped service respectively)
His speed estimate on their website is 40/10 & 69.5/20

If you need any more info just ask.

Thanks for any help Harry
Administrator MrSaffron
(staff) Sat 13-Oct-12 15:51:15
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Re: attenuation differences help


[re: haz1000] [link to this post]
 
What does littlebigone say about the discrepancy between estimate and live?

Have you ensured that no wiring inside your property is the issue by using the master socket test socket?
Also little is known of how Digital Region run their systems, i.e. is it the same with Openreach VDSL2 in that going for the faster products is only worthwhile if you know you are hitting the speed caps.

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User haz1000
(newbie) Sat 13-Oct-12 16:04:20
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Re: attenuation differences help


[re: MrSaffron] [link to this post]
 
In reply to a post by MrSaffron:
What does littlebigone say about the discrepancy between estimate and live?

Have you ensured that no wiring inside your property is the issue by using the master socket test socket?
Also little is known of how Digital Region run their systems, i.e. is it the same with Openreach VDSL2 in that going for the faster products is only worthwhile if you know you are hitting the speed caps.


Hi im not sure if its the wiring or not its never caused problems with my old ADSL that maxed out as much as i could go, When i first connected to LBO it was at full speed then it dropped to about 34/8 for a few month then it dropped to current speeds this last week. LBO claim thatís what im stuck at and donít seam to acknowledge that i ever had faster speeds and say there not much they can do thatís all i can handle, all they keep saying is can you run a speedtest on there speedtest server (links to speedtest.net mini test),
But as ive told them its syncing at 27meg and when i download anything it runs at that then they repeat then whatís the problem and i have to start all over again that the sync speed its self i want raising because i know it 1 point ive maxed out. My friend ash (ACPSD775) has had to go on the phone a few times coz he knows how to word tings a bit better and can get through to them more but even still there insisting they canít improve me.

Thanks Harry

Edited by haz1000 (Sat 13-Oct-12 16:06:33)


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Standard User kasg
(experienced) Sat 13-Oct-12 16:13:42
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Re: attenuation differences help


[re: haz1000] [link to this post]
 
In reply to a post by haz1000:
Now dose the same apply with VDSL my friends attenuation is 22 heís currently on 70/24 when he was on the 40/10 product he synced at 48/12 but it was capped at 40/10 i suppose this was for the through put to be as max as possible well anyway to the point

That doesn't actually make sense, you can't sync at 48/12 on a 40/10 product.

Kevin

plusnet Extra Fibre (80/20)
Using OpenDNS
Domains and web hosting with TSOHOST
Standard User RobertoS
(sensei) Sat 13-Oct-12 16:15:23
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Re: attenuation differences help


[re: kasg] [link to this post]
 
I spotted that all of the syncs seem high. I wonder if the quoted product speeds are throughput, not sync?

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet Extra Fibre (FTTC). Sync ~ 57.4/14.6Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.

Edited by RobertoS (Sat 13-Oct-12 16:15:43)

Standard User haz1000
(newbie) Sat 13-Oct-12 16:37:04
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Re: attenuation differences help


[re: RobertoS] [link to this post]
 
In reply to a post by RobertoS:
I spotted that all of the syncs seem high. I wonder if the quoted product speeds are throughput, not sync?


Hi as i understand LBO / DRN will if you line can handle it sync you higher than 40/10 to make sure you get full 40/10 and not 37/9 or w/e it used to be on infinity. Hence why when he had 40/10 it was about 48/12 but hard capped at 40/10 mine also used to be similar to this for the first few weeks canít remember the exact figures though, But as said LBO now claim its impossible there even saying its impossible that I had the 34 for so many months I think it ultimately depends who you get on the phone because they all say one thing and another say a different one I also understand it that they donít have any access to changing things themselves and have to get DRN to do it unlike with OR were the ISP has some sort of control so getting LBO to tweak things can be a lengthy process to start with. I wouldnít mind as much if they at least could get me back to 34 as at least I know I was on that for months. But ideally Iíd like to get the faster product but until they can sort the current speeds out I donít want to risk been tied to paying an extra tenner and still getting under 40 lol,
This is the main reason im asking about attenuation how can it be that we both have very similar attenuation and close speed estimates but have such very different sync speeds would it be worth mentioning to little big one about us having similar attenuations etc. or would they claim itís just irrelevant

Thanks Harry
Administrator MrSaffron
(staff) Sat 13-Oct-12 17:17:47
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Re: attenuation differences help


[re: haz1000] [link to this post]
 
Wiring that was perfectly fine for ADSL is often not for VDSL.

VDSL runs at up to 17 MHz rather than the up to 2 MHz of ADSL2+ so effects of things like extensions and bridge taps can be massive

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User haz1000
(newbie) Sat 13-Oct-12 17:29:14
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Re: attenuation differences help


[re: MrSaffron] [link to this post]
 
In reply to a post by MrSaffron:
Wiring that was perfectly fine for ADSL is often not for VDSL.

VDSL runs at up to 17 MHz rather than the up to 2 MHz of ADSL2+ so effects of things like extensions and bridge taps can be massive


Ahh right urm well we do have an extension but itís an official BT one put in over 20 years ago the line from the pole got to the house to a little box outside then 2 cables come out of that, 1 to the kitchen & 1 the my dadís bedroom. the one in the kitchen goís to a box like this and the one in his bedroom is identical but the BT flute logo instead of a T (none are NTE5s) They both share the same phone number so there defo the same line also the ring wire has been removed out of both and filters have been replaced to make sure it was not a faulty filter,
Iíll try get some pics taken when i get home, On a side not the router is in his bedroom weíve no clue which the master is but Iím presuming itís the one in the kitchen (both sockets there before we moved in 20 years ago) but also if I plug the router in the kitchen even after 20 minutes it does not sync hence why its in his bedroom,

Thanks Harry
Administrator MrSaffron
(staff) Sat 13-Oct-12 17:35:23
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Re: attenuation differences help


[re: haz1000] [link to this post]
 
The ideal situation is the master socket and modem as close to where the line enters the property and any extensions wired off that.

Star wiring which is what you've described is not good for VDSL, and if one extension is working for the phone and not the VDSL modem (and you have no master socket ADSL filter faceplates) then this goes a long way to explaining your speed issues - probably

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User RobertoS
(sensei) Sat 13-Oct-12 17:42:07
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Re: attenuation differences help


[re: haz1000] [link to this post]
 
Chances are you have the two top left here, where the 1A is the master (with the capacitor at the top), and the 3A is the extension, (no capacitor).

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet Extra Fibre (FTTC). Sync ~ 57.4/14.6Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
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