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Standard User deleted
(deleted) Sat 07-Oct-17 00:21:15
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Estimated line length


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Hi all,

My Line attenuation is 20db.. And I've estimated it about 600m of the route it I think it takes

Syncing at 60meg download
Standard User deleted
(deleted) Sat 07-Oct-17 08:37:58
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Re: Estimated line length


[re: deleted] [link to this post]
 
Sounds about right! My line is estimated at being 900 m long - reported attenuation of around 26.6 dB.
Standard User deleted
(deleted) Sat 07-Oct-17 08:47:23
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Re: Estimated line length


[re: deleted] [link to this post]
 
what speeds do you get


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Standard User deleted
(deleted) Sat 07-Oct-17 08:53:49
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Re: Estimated line length


[re: deleted] [link to this post]
 
Circa 55 Mb DS and circa 8 Mb US.
Standard User deleted
(deleted) Sat 07-Oct-17 09:07:25
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Re: Estimated line length


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well yours alot faster 24.4 line db 35mb ds and 6mb us

Edited by deleted (Sat 07-Oct-17 09:09:30)

Standard User deleted
(deleted) Sat 07-Oct-17 09:18:17
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Re: Estimated line length


[re: deleted] [link to this post]
 
Sync at 60 and get 60-59 with a 3.0 noise margin
Standard User Ixel
(member) Sat 07-Oct-17 09:24:42
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Re: Estimated line length


[re: deleted] [link to this post]
 
I'm at 20 dB line attenuation and at 6 dB SNRM target I can sync at 56Mbps / 13Mbps approximately.
Standard User deleted
(deleted) Sat 07-Oct-17 09:27:09
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Re: Estimated line length


[re: deleted] [link to this post]
 
It sounds like your line is banded then...
Standard User deleted
(deleted) Sat 07-Oct-17 10:58:29
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Re: Estimated line length


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what does that mean then
Standard User simon194
(experienced) Sat 07-Oct-17 11:53:02
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Re: Estimated line length


[re: deleted] [link to this post]
 
Mine too.

24.8dB attenuation and sync at 14.9 Mbps with 5.9dB SNRM. Openreach say my line is about 1.2km long so it sort of shows that with fibre using the attenuation isn't the best way to estimate line length.
Standard User deleted
(deleted) Sat 07-Oct-17 11:57:52
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Re: Estimated line length


[re: deleted] [link to this post]
 
It means that your line is most likely stuck in a banded profile. In this instance, on the DS side. If you could post your line stats, I can confirm this for you.
Standard User deleted
(deleted) Sat 07-Oct-17 11:58:17
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Re: Estimated line length


[re: simon194] [link to this post]
 
Ouch! That needs sorting out! You should be syncing closer to at least 40 Mb! With regards to attenuation, yes I partly agree, as it can be affected by lots of external factors, but it is the best figure to use, if you want to estimate your line length.

Edited by deleted (Sat 07-Oct-17 12:02:52)

Administrator MrSaffron
(staff) Sat 07-Oct-17 12:57:19
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Re: Estimated line length


[re: deleted] [link to this post]
 
Confirm with what degree of confidence?

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User deleted
(deleted) Sat 07-Oct-17 14:25:50
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Re: Estimated line length


[re: deleted] [link to this post]
 
line stats
Standard User deleted
(deleted) Sat 07-Oct-17 14:32:18
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Re: Estimated line length


[re: deleted] [link to this post]
 
really weird after 27 days 7 hours almost 36mb just went up
Standard User deleted
(deleted) Sat 07-Oct-17 17:40:52
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Re: Estimated line length


[re: MrSaffron] [link to this post]
 
Not a lot, but how else are you supposed to estimate and I stress ESTIMATE your line length without a JDSU?
Standard User deleted
(deleted) Sat 07-Oct-17 17:41:36
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Re: Estimated line length


[re: deleted] [link to this post]
 
Ah, it's not banded, you just have either a slightly poor quality line or heavy amounts of crosstalk.
Standard User deleted
(deleted) Sat 07-Oct-17 17:44:23
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Re: Estimated line length


[re: deleted] [link to this post]
 
i switching from plusnet soon what do i need tell them do i need a new line
Standard User deleted
(deleted) Sat 07-Oct-17 17:50:33
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Re: Estimated line length


[re: deleted] [link to this post]
 
No, but you may have a fault. Please can you tell us if the router is connected to the master socket and can you paste the result of your phone number (if on BT) or your address (please blank this out) from this link.
Standard User deleted
(deleted) Sat 07-Oct-17 18:02:37
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Re: Estimated line length


[re: deleted] [link to this post]
 
connected direct to the socket no phone conected

speed

speed 2

Edited by deleted (Sat 07-Oct-17 18:06:43)

Standard User deleted
(deleted) Sat 07-Oct-17 18:05:42
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Re: Estimated line length


[re: deleted] [link to this post]
 
Ah, your line is connecting within the estimate shown, so unfortunately you won't be able to raise a fault very easily.
Standard User deleted
(deleted) Sat 07-Oct-17 18:07:55
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Re: Estimated line length


[re: deleted] [link to this post]
 
speed
Administrator MrSaffron
(staff) Sat 07-Oct-17 18:10:35
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Re: Estimated line length


[re: deleted] [link to this post]
 
You said

"It means that your line is most likely stuck in a banded profile. In this instance, on the DS side. If you could post your line stats, I can confirm this for you"

So was enquiring as to what confidence you could confirm its a banded profile. Nothing to do with estimating line length.

The questioning is a reminder that people will taken things like 'I can confirm' and believe you totally, so if you cannot be 100% certain better to qualify any comments.

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User deleted
(deleted) Sat 07-Oct-17 18:14:14
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Re: Estimated line length


[re: MrSaffron] [link to this post]
 
stats

Edited by deleted (Sat 07-Oct-17 18:15:30)

Standard User deleted
(deleted) Sat 07-Oct-17 20:00:45
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Re: Estimated line length


[re: MrSaffron] [link to this post]
 
Because if the line rate is at or around a banded profile value, it's going to be banded!
Standard User deleted
(deleted) Sat 07-Oct-17 20:01:36
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Re: Estimated line length


[re: deleted] [link to this post]
 
Yup, nothing wrong with those stats. A DS SNRM of 3 dB, also suggest that the line, is relatively stable.
Standard User deleted
(deleted) Sat 07-Oct-17 20:11:57
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Re: Estimated line length


[re: deleted] [link to this post]
 
i dunno really goes from 3.0db all away up to 3.7db not steady db
Administrator MrSaffron
(staff) Sat 07-Oct-17 20:12:53
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Re: Estimated line length


[re: deleted] [link to this post]
 
So it is impossible to get those line rates unless the line is banded?

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User deleted
(deleted) Sun 08-Oct-17 09:52:34
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Re: Estimated line length


[re: MrSaffron] [link to this post]
 
No, however if the line resyncs either by DLM or via the EU, and it stays virtually the same, it's banded.
Standard User deleted
(deleted) Sun 08-Oct-17 09:52:58
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Re: Estimated line length


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Mine does that, however apparently that's fine...
Standard User simon194
(experienced) Sun 08-Oct-17 10:06:53
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Re: Estimated line length


[re: deleted] [link to this post]
 
My neighbours get around the same speed so it's down to the copper and crosstalk guess.

I used to get around 33 Mbps but that was because my line was originally connected to a temporary cable that was put in for the site and sales offices which was some something like 400m shorter. That has since been removed and any lines connected to it were moved the cable that comes into the estate from the next road up.
Standard User deleted
(deleted) Sun 08-Oct-17 10:10:03
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Re: Estimated line length


[re: simon194] [link to this post]
 
That copper is obviously very thin and poor then. frown
Administrator MrSaffron
(staff) Sun 08-Oct-17 10:38:50
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Re: Estimated line length


[re: deleted] [link to this post]
 
Or it could be that the line conditions have not changed so that the sync is virtually the same.

A sync virtually the same is not a 100% proof of banding, it might suggest its presence - which is what I am trying to get across.

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User Zarjaz
(eat-sleep-adslguide) Sun 08-Oct-17 11:14:54
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Re: Estimated line length


[re: deleted] [link to this post]
 
No, it most likely takes a longer route than the original temporary site office feed.

It is extremely unlikely that different gauge copper has been used. From what the poster says this sounds like a recently built site ... Openreach have basically only used 0.5 gauge copper for its new D side cables for well over 10 years.

Standard User simon194
(experienced) Mon 09-Oct-17 08:17:43
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Re: Estimated line length


[re: Zarjaz] [link to this post]
 
It is a new site completed started in 2014 and completed earlier this year. The temporary cable literally just came onto my road and terminated in a chamber 20m away from my house whereas the cable for Phase 1 of the development runs past the end of my road and along the next road up before coming down onto the Phase 2 houses and terminates in the same chamber.

You could say it literally goes round the houses. smile
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