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Standard User InternetUser
(newbie) Sat 22-Mar-14 09:24:17
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Is BT broadband checker taking account of cross-talk now


[link to this post]
 
Just an observation on the BT wholesale broadband checker
When I ordered BT Infinity 2 on 11th February 2014 it had a max high on clean
line listed as 68.1 (I have a printout), the speed range was used as a selling point
when I called sales.
As of yesterday morning this had been revised down and dropped to 66 and
having just checked today it has now had another big drop to 60.1 !
A total loss of 8 mbps in just 5 weeks.
This is in line with the speed decrease I have seen and I think they must be
updating the database to take account of crosstalk as more and more connections
go live on the cabinet.
This does however beg the question why not start with a better assumption as to
the likely take up and start the value closer to what it is most likely to end up as,
should users then get better than this they would be happy but I guess it may
affect sales rates if potential users think the upgrade is less worth while.
Has anyone else noticed such a large change in the broadband checker results
over recent weeks ?
Administrator MrSaffron
(staff) Sat 22-Mar-14 10:23:38
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Re: Is BT broadband checker taking account of cross-talk now


[re: InternetUser] [link to this post]
 
Feedback from actual lines has been a feature of the ADSL2+ figures for a while, so no reason to believe similar does not happen with VDSL2. Helping to improve the calculated estimates with actual real world data.

You mention the max high, what where the other three figures in the original estimate?

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 InternetUser
(newbie) Sat 22-Mar-14 11:11:31
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Re: Is BT broadband checker taking account of cross-talk now


[re: InternetUser] [link to this post]
 
The original estimate was as follows (11-02-2014)

Clean A : 68.1 55 Down 20 14 Up
Impact B: 55 40 Down 20 12 Up

It is now (22-03-2014)

Clean A: 60.1 43 Down 17 10.8 Up
Impact B: 51.1 28.3 Down 17 7.7 Up

Quite a big variation I would say in 5 weeks and heading towards Infinity 1 speeds !


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Standard User keithwjones
(member) Sun 23-Mar-14 10:03:01
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Re: Is BT broadband checker taking account of cross-talk now


[re: MrSaffron] [link to this post]
 
I have also noticed and posted last year:

http://forums.thinkbroadband.com/bt/t/4286751-bt-inf...

I think it is a question of honesty and integrity.

Keith
Standard User Ignitionnet
(knowledge is power) Sun 23-Mar-14 11:43:43
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Re: Is BT broadband checker taking account of cross-talk now


[re: keithwjones] [link to this post]
 
These estimates come from Openreach. Openreach get paid the same whether you sync at 41Mb or 80Mb.

Honesty and integrity are nothing to do with it. Estimates are being refined as more real-world data comes in and take up increases. They are estimates and estimates should be subject to refinement as more data comes in to improve the confidence level of the estimate.

I throw a slightly loaded dice 6 times I am not going to get anywhere near as good an estimate of where the bias is on it as if I throw it 6,000 times. Not me being dishonest, just doing the best I can with the data set I have to hand.
Standard User IranianGiraffe
(learned) Sun 23-Mar-14 12:24:11
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Re: Is BT broadband checker taking account of cross-talk now


[re: InternetUser] [link to this post]
 
You think your variation is big then look at mine

mine has gone from

FTTC Range A 59.3 - 43.7
FTTC Range B 49.7 - 26.7

to

FTTC Range A 41 -32.3
FTTC Range B 35.2 - 19.3

When I was first connected to fibre I had around 50meg for the first month, since then it has steadily dropped and now I get around 33meg less than 3months in.
So I've lost around 1/3rd of my speed in 3months, I'm hoping most people have already connected and that's what has caused the drop in speed but my cabinet was not supposed to be live until next week and there has been no advertising of it so I doubt most here even know they can get it yet.
Administrator MrSaffron
(staff) Sun 23-Mar-14 18:40:17
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Re: Is BT broadband checker taking account of cross-talk now


[re: Ignitionnet] [link to this post]
 
Openreach could send out engineers to every home with a VDSL2 modem at the same time, and co-ordinate switching on off modems in stages to assess the cross talk, but then this would be a little expensive.

Sounds a silly idea, but to get the real world numbers that everyone wants connecting a modem is the only answer, and the checkers do nothing to limit your speeds.

There was feedback with ADSL2+ but as figures were smaller I guess people noticed less.

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 keithwjones
(member) Mon 24-Mar-14 09:25:33
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Re: Is BT broadband checker taking account of cross-talk now


[re: InternetUser] [link to this post]
 
I am on HH3.

How do you get the A and B figures.

Keith
Standard User InternetUser
(newbie) Mon 24-Mar-14 09:48:56
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Re: Is BT broadband checker taking account of cross-talk now


[re: keithwjones] [link to this post]
 
Via the online BT broadband availability checker at URL

http://www.dslchecker.bt.com

Enter your telephone number and it will list all available broadband options with speed estimates.
Standard User keithwjones
(committed) Mon 24-Mar-14 10:31:56
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Re: Is BT broadband checker taking account of cross-talk now


[re: InternetUser] [link to this post]
 
Thank you, that gives me:

FTTC Range A (Clean) 55 - 38.1 - 14.5 - 9
FTTC Range B (Impacted) 47.5 - 25.9 - 14.5 - 7

Speed test Connection speed 43 Down 41.5 Up 9.49

Originally I was getting 52 - 51.2 - 9.26

When I signed up:
We estimate your download speed will be: 53.2Mb

We estimate your upload speed will be: 15.7Mb

Keith
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