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LLU ADSL2+ users: What uplink speed do you get?
Does Sky cap at 1 Mb/s, like TalkTalk, or can it do the full 1.3 Mb/s if the line is good?
3 km line on THTG: 18/1 Mb/s with Pulse8
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When I was with Be I got 1.4Mb/s upload synch but with sky it's dropped to 1.1Mb/s. ymmv depending on your exchange and router chipset.
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This is my upload sync on LLU Sky ADSL2+
Current Rate (Kbps) 1442
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cap at 1 Mb/s, like TalkTalk
When I was with TalkTalk I was capped to 500 Kbps. Only when I moved supplier I found that my line can easily do 800-900.
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My talktalk line was never capped in this way?
This is my stats from my talktalk line before they activated fibre:
https://postimg.org/image/qj0lwz69d/
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Sky LLU has a max upload of 1.3Mbps, they don't use Annex M to offer anything higher.
There are also lots of people having issues whereby Sky's DLM has a profile which caps the upload at 799kbps for "stability" reasons, even where it's been stable for months on end at higher speeds.
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Greetings
Sky's DLM system will profile to a max of 2.5Mbps
Now this will require a router that supports Annex-M,
Sky Hubs will not support this so the most you will get on that router will be 1.3Mbps.
Edited by deleted (Wed 14-Dec-16 22:42:11)
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Thanks, Steven.
My line goes live in a couple of days. My modem does do Annex-M. Let's see how it goes...
3 km line on THTG: 18/1 Mb/s with Pulse8
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Fingers crossed
Have to say I changed to a netgear I had been sent for testing but that seems not to support Annex-M
Also should point out that with the 2.5Mbps some lines are very unstable due to max delays being 1ms among other things, however my line is rock solid ( yes I am only on 1.3Mbps up but I have seen others being unstable )
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I wasn't aware their DLM took the upload rate as high as that. When I was on BE There I was getting 2.8Mb upload rate on 3db and near max download rate.
I thought Sky only provided 1.3Mb max.
The additional bandwidth will be handy in the interim before I move to a fibre solution.
24Mb
Sky Broadband Pro
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Originally no Sky was max of 1.3, however due to the take over of o2/BE they had to change some of the profiles due to BE Business customers.
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And here is the big thing, only those old Be Annex M customers get access to Annex M it is not part of the current Sky sales line up
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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Well that's funny I have seen many lines configured to that speeds with standard Sky unlimited dsl.
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This is new to me, especially as I was an Annex M customer for the whole 5 years I was with BE There. I will have to contact them about this. They flat out told me it doesn't exist blah blah.
I appreciate the heads up on this.
24Mb
Sky Broadband Pro
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Define many? If it was a significantly large number then I'd able to show a clear difference in upload speeds between Sky and other providers
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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Greetings,
Off the top of my head I cannot recall when I first noticed it on lines,
But it has been at least a year maybe 18 months.
Weather the offer it is another story but I know DLM has it set in the profiles.
The profile is 2.5Mbps / 0 impulse noise protection / 1ms delay / 3dB SNR
Feel free to pm me if you like more info.
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Enough that the "Tech Team" assume that that profile causes lines to be intermittent,
Yes the listed profile can cause intermittent but no more than any others.
My line took a few runs of DLM before it was stable,
Strange thing is every time it ran it repeatedly set same profile and then after 5 weeks or so became stable.
With the current role I have I have the ability to look at the backend reports from DLM
The line always had a few cv's (crc's) some Am noise but nothing changed and DLM finished and line working great.
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Well speed test evidence shows now sign of even 5% being on Annex M with Sky
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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I stand corrected,
Despite the profile being 2.5 up its left on Annex-A
Some users have had Annex-M unlocked ( cannot confirm how this was done )
Also all sky hubs above phase 2 Sagecom will support Annex-M if unlocked.
I have been trying to find out how customers can have this unlocked but not getting any answers as yet.
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Greetings
Sky's DLM system will profile to a max of 2.5Mbps
For everyone's benefit, this is not the case.
A very very small percentage of customers have 2.5Mbps (these are ex-BE), but even then most of them got forced onto the standard Sky packages due to cost incentives etc.
If you join Sky expecting 2.5Mbps upload you will be very disappointed.
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OK, it's just gone live. I decided not to fiddle with Annex-M right now, for fear of confusing any initial DLM run. It's bad enough that I tweaked the target SNR down to 1.5 dB 
Sync seems to be stable at 18.5 down and 1.268 up. Not bad for a 3 km rural line, eh? I got 17.5/1 on TTB at the same target margin, so... happy days (so far)
3 km line on THTG: 18.5/1.3 Mb/s with Sky
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You can't get Annex M just by fiddling in the router. You need Sky to provision it for you.
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC
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Sky ADSL LLU doesnt have DLM or certainly not like BT's thing with profiles etc.
My ADSL Sky LLU (as it did when it was Be) always syncs at the best speed it can, and my line is only 4mb and has moments when its up and down all the time, and always without fail it connects at fastest speed.
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Oh yes they do have DLM but the way it handles things is different to the BT Wholesale ADSL2+ and IPstream systems, hence why when ADSL2+ was more popular you had Sky users start at 4 Mbps and then get faster.
Its worth posting your router stats, as if always at the 4 Mbps mark and your attenuation suggests more is possible its possible the Sky DLM is not behaving on your line
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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Hi Mr S, No my line is fine, its roughly 4mb (sometimes more, sometimes less) as im miles away from the exchange, and thats with a 3db SNR (set online) as im on their BB Pro for a fixed IP.
I was just implying that I can reboot my router 100 times a day but it will always connect at best sync speed which varies as you know if its daytime or night.
Edited by Rolandrat (Thu 22-Dec-16 09:32:01)
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Thats because generally once the Sky DLM has learnt the maximum cap for a line it does fiddle with target margins and interleaving anywhere near as much as BT Wholesale
If several miles though the 4 Mbps sounds real
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The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
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If requested can Sky switch off DLM like TalkTalk can on their ADSL2+ lines? Very useful for those of us who like to faff around with our routers 
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If requested can Sky switch off DLM like TalkTalk can on their ADSL2+ lines? Very useful for those of us who like to faff around with our routers
No they can't but Sky DLM doesn't kick in very easily...
Sky is a little different in that they set a sync speed cap, so they may say your line can only handle 11.5Mbps and this becomes the maximum speed your line can ever sync at. If you tried to manually force down the noise margin, and were already at this maximum speed it wouldn't do anything.
They usually set this speed to one where they think the line will not drop out.
Sky CS can turn off DLM but it does come back, the only exception are those who came from BE and have Sky pro or something worded similar.
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Cheers for the explanation.
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Just heard you on 5Live.
Regarding Sky's DLM (I know this is a little off topic), I find that you're absolutely right it doesn't intervene as much. But that's not always a good thing. I've seen many Sky lines struggling with stability, constant disconnects and the like. You look at it and their system hasn't intervened at all, SNR is stil 6dB on what they call an open profile and you think if the system had made some changes at least the line would be stable again.
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�start at 4 Mbps and then get faster. Yes, except it's worth noting that Sky's DLM changed a while ago, AFAICS: It now starts fast and then reduces speed to meet its goals.
3 km line on THTG: 18.5/1.3 Mb/s with Sky
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