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I hear the estimated line speeds from the BT Wholesale Checker have been slashed across the board. http://www.dslchecker.bt.com/adsl/adslchecker.welcome
Is this because of BT's network being overloaded due to the introduction of IPTV for BT Sport?
__________________________________________________________________________The back pedalling starts here__________________
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I checked two lines, one is the same, the other (mine) has lost 2 meg on the download estimate.
Is this because of BT's network being overloaded due to the introduction of IPTV for BT Sport?
I doubt that, as that will all be at the IP level, the estimate I assumed was at the VDSL sync level.
Probably more data on the effects of Cross talk ?
James BT Infinity 2 19/09/2012 - Speeds 49 / 8.2 Mbps - Sync 53 / 9.5 Mbps @ 470m
Huawei modem -> RT-N66U -> Switch -> PC/Mac/Linux/NAS/Phone/TV - last speedtest
13 years of broadband - 1999 ntl:(512k/1M)/BTbusiness(2M)/Metronet(2M)/Bulldog(8M/16M)/BE(19M/16M)/BT FTTC(46M)
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Mine's slashed, 58->52, and upload even more by 19->13. Actual speed remains around 70/18.5.
I think it's the sync speed they give in the estimates; I wouldn't have thought IPTV would have had any impact at that level.
I guess they just want more headroom to wiggle out of complaints.
--
Moved (with trepidation turned relief) to BT Infinity 2 for upload speed. Happy BE user for several years.
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Mine has gone the opposite way 60 to 61.2mbps
I'll find out tomorrow afternoon how good the estimate was!
Steve
Plusnet Fibre coming soon!
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WBC FTTC Up to 53.5 Up to 13.2 -- Available
WBC ADSL 2+ Up to 7 -- 4.5 to 11 Available
WBC ADSL 2+ Annex M Up to 7 Up to 1 4.5 to 11 Available
ADSL Max Up to 5.5 -- 4 to 8 Available
WBC Fixed Rate 2 -- -- Available
Fixed Rate 2 -- -- Available
Mine as always been that i get up to 47 d/l and 8.5 u/l
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My estimate has reduced from 55/18 to 53/16.
I suspect it is due to their experience of the effect of crosstalk, and it having more effect than they previously imagined - early adopters within a cabinet are still getting speeds much higher than even the original estimates.
Obviously BT's network can't be currently overloaded due to a TV channel that doesn't launch for another 3 months.
In any case, when it is running, the design for that should be using multicast, and the TV-Connect concept has (I recall reading) some large-ish amount of dedicated bandwidth allocated towards each cabinet, which looks to be on top of the ordinary backhaul bandwidth.
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In any case, when it is running, the design for that should be using multicast, and the TV-Connect concept has (I recall reading) some large-ish amount of dedicated bandwidth allocated towards each cabinet, which looks to be on top of the ordinary backhaul bandwidth.
I'd be interested in how that could work, as I thought the Openreach FTTC design was deliberately ISP neutral - as otherwise Sky and TalkTalk and any other GEA ISP would be disadvantaged.
Also how can you intercept a PPPoE session (as used on all BTW services) at the cabinet, as the PPP session terminates at the chosen ISPs RAS ?
James BT Infinity 2 19/09/2012 - Speeds 49 / 8.2 Mbps - Sync 53 / 9.5 Mbps @ 470m
Huawei modem -> RT-N66U -> Switch -> PC/Mac/Linux/NAS/Phone/TV - last speedtest
13 years of broadband - 1999 ntl:(512k/1M)/BTbusiness(2M)/Metronet(2M)/Bulldog(8M/16M)/BE(19M/16M)/BT FTTC(46M)
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I'd be interested in how that could work, as I thought the Openreach FTTC design was deliberately ISP neutral - as otherwise Sky and TalkTalk and any other GEA ISP would be disadvantaged.
You probably need to take a look at this Openreach document. It looks like they can support 4 CPs wanting to multicast.
Also how can you intercept a PPPoE session (as used on all BTW services) at the cabinet, as the PPP session terminates at the chosen ISPs RAS ?
It looks like you don't, and need to establish both IPoE and PPPoE connections between router and modem.
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Mine has been slashed from 58.5/18 to 54.3/13.2.
:eek:
So I wonder how much of my reduction from 68 to 52.72 profile is due to the line fault I am currently experiencing, and how much is down to crosstalk as the cabinet ports fill up? By the amount of jumper wire accumulating outside the copper cab I think there has been a big take up!
Still, my upload speed hasn't changed to the extent predicted here.....
Edited by Colin_London (Mon 27-May-13 20:18:06)
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mine still says the same, but if it has been slashed I think it most likely to reduce line fault reports is the reason.
BT Infinity 2 Since Dec 2012
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