Kitz Forum
Broadband Related => Broadband Technology => Topic started by: Weaver on March 07, 2017, 11:48:02 PM
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Who has the slowest DSL downstream? Including someone you know. UK and Ireland-only, no abroad-land.
Is anyone you know still using dialup? (Movable laptops don't count, that's cheating, my rules.)
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Who has the slowest DSL downstream?
Is that synchronisation speed or throughput speed? If the latter, which tester do you suggest that should be used?
My CPE currently reports --
$ xdslctl info --state
xdslctl: ADSL driver and PHY status
Status: Showtime
Last Retrain Reason: 8000
Last initialization procedure status: 0
Max: Upstream rate = 992 Kbps, Downstream rate = 5684 Kbps
Bearer: 0, Upstream rate = 984 Kbps, Downstream rate = 5120 Kbps
I regard it as neither fast nor slow but adequate for my needs.
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Good point. Let's consider two categories and give out two awards.
Include your granny, next door neighbour or the fellow down the road. Burakkucat has absolutely no chance of course, sorry. I'm interested in just how badly the country is doing in its darkest spots.
If people want to apply for the speed tester true downstream throughput gong then I suggest that people have to submit a non-cherry-picked number of results and the fastest score is the one that counts, so no omitting the better results. This max-based apparoach avoids false results due to congestion, load on the test servers or alien traffic at the user's end. Need to swear their own end was free of competing users’ traffic and test at a quiet time of day if at all possible. An a good few tests.
As for which tester, I am very much open to suggestions, but I myself propose speedof.me as it will work on any platform and it gives the highest numbers the latter hardly being very scientific, but it's a tentative re-use of the same max-basis logic but on a shakier foundation. Why the highest numbers? Who knows - may simply be exaggeration or a matter of their honest particular choice of definitions or their techniques, but it could be argued that it demonstrates freedom from congestion, good routing and central placement.
As for the prizes? Fame? Heartfelt sympathy? An appropriate top-quality BT OR faceplate filter and a Tandy DSL cable maybe. Installation fees for a move to one of the ISPReview top n ISPs? I can donate a new DLink DSL-320B-Z1 from my mountain of spares.
We also have to think about whether or not to allow candidates for either category who have silly target SNRMs (I suggest disallowed) and candidates who have broken lines, duff kit, broken hardware, evil internal wiring or interference problems. Suggestions? I suggest healthy systems only, for a whole raft of reasons. (Healthy meaning that if it can be fixed it gets fixed even if that might knock you out of the race for glory.) Thoughts?
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I spent a weekend at a farmhouse in Cnewr, a tiny village in the Brecon beacons, back in November and that had an ADSL DS connection speed of about 448Kbps. I don't know its phone number but the SamKnows site puts the postcode as 7.85km from Sennybridge exchange!
Is that the sort of slow you are after. :)
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there's one in the UK on MYDSL with a sync on the DS 4128 and the upstream at 448
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My sync is 2603kbps down and 702kbps up.
I've known people in the past have a 160kbps sync on an 8km line.
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You may know about this map
http://maps.thinkbroadband.com/?utm_source=mainsite&utm_medium=navigation&utm_campaign=maps&utm_content=sidebar
Not sure if this speed test counts, In a London hotel room two weeks ago on there WiFi I got 0.01Mbps Down and 0.73Mbps up 87ms ping, on a good day I got 0.06 and 0.6 up 368 ping :lol:
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@Weaver
Perhaps you're assuming that everyone will be on the fastest technology available to them?
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@ejs - No. But no cheating by having a broken line, otherwise you could knacker your own setup to win the prize.
Tickmike potentially makes a fine challenge for winner of award category 2, but that is probably contention of wireless lan overload, which is a violation of the methodology rule - has to be quiet. Would be ok if he were the only guest. Its site bandwidth, not individual experience.
lee111s personally puts me out of the running, slightly. Not that 'I ever had a chance because all my neighbours beat me in some cases by a long way. I have the shortest and by far the quietest line as well as umpteen other things.
lee111s' acquaintance could well be a winner in both categories. Would have to be current though.
skyeci - hopeless :-) sorry, must do better (worse?)
tubaman - fantastic contender, current and specific but lee could overtake you if it can be nailed down.
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My own connection rate is with a 2db margin too. If it's at 6, then I only get around 2.1meg sync.
Amazingly the line is stable at 2db. Quite a few errors but the don't have an impact on throughput.
DLM is essentially "off" on my connection.
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lee - tell us about your line, kit etc, if you wish? (separate thread if you prefer.) I get a d/s sync of very roughly 2600 to 2800 on my three ADSL2 lines at 3dB d/s target SNRM, actually running at below 2 dB after a while typically. The three lines are BTW 21CN, 66 dB d/s attn, ~4.55 mi long.
If I run at 6dB it doesn't make that much difference to sync rate for some reason, and the snrm soon drops and eventually ends up close to the same long-term value as for a 3dB target anyway. Don't know why.
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Engineer said the cab is 4040m from the exchange, and I'm about 550m from the cab.
59db attenuation using a billion 8800NL (original, not the R2). Target SnR set at 2db in the billion. No intervention from DLM due to errors as mentioned earlier, I've had it disabled.
At the cab on a 6db profile the engineer was getting 2.4meg, so the D-side "loses" around 400kbps.
The fibre cab has been stood a few weeks ago but there's a delay in the power. Openreach awaiting a quote from Northern Power Grid to connect her up.
I think the fibre has been connected as Avonline networks spent a full day at the cab last week.
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So something is not right if your sync rate is that low compared with mine and your downstream attenuation is 7-8dB better. Either the line plus house is noisy compared with my line, but then everyone possible is, per metre at any rate, or modem plus filter plus DSL cable to modem is not as good. I would go with 'noisy'. start another thread if you want to do some experiments as some improvements will be worthwhile even when you go to FTTC, just that the filter will need to be different.
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So something is not right if your sync rate is that low compared with mine and your downstream attenuation is 7-8dB better. Either the line plus house is noisy compared with my line, but then everyone possible is, per metre at any rate, or modem plus filter plus DSL cable to modem is not as good. I would go with 'noisy'. start another thread if you want to do some experiments as some improvements will be worthwhile even when you go to FTTC, just that the filter will need to be different.
Absolutely no noise on the line. PQT very good, it's just shitty E-Side cabling. Well known that the cab we're on is rubbish. None of the lines to the cab get 3meg despite being 4km to the exchange.
There's going to be hell on when FTTC is enabled as they've only installed a 128 Huawei and there's 300+ homes connected to the cabinet :D
I used to work for a CP and dealt with complex DSL faults. I've got a brand new D-side as it's a new build house, brand new master socket fitted by OR a few months ago on the other side of the wall where the line enters the house, no extensions.
I actually have one of the higher connection rates around here, most are sub 2meg, one of my neighbours is on 0.7 but that's due to poor quality internal wiring.
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My sincere apologies, you will know far more about it than I ever will. :-) I'm just surprised at your sync speed given your attenuation figure, which of course takes into account thin wiring. Perhaps your wiring and green cab is rubbish in some other way. Depending on how you feel about the use of terms, do you include crosstalk under the heading of 'noise'? According to Black Sheep iirc, my wiring is the fattest copper, for most of the length at least.
If your noise is ok, then that either means that mine is ridiculously good, or it's to do with modems, filters, cables etc. I don't know what my crosstalk is like. I have no filter at all (no phone), good ultra-short dsl cable, no house-internal wiring, triple-filtered mains supply to the modems just in case and aggressive modems, I believe. So maybe the difference is in there. I've spent a lot of time over the years comparison testing-kit and swapping things over, including making some 'improvements' that are probably pseudo-science and not really relevant but can't hurt.
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Absolutely no noise on the line. PQT very good, it's just shitty E-Side cabling.
<snip>
I've got a brand new E-side as it's a new build house, . . .
<snip>
Having now read your posting a number of times, I suspect that the second mention of E-side (coloured blue, above) should really be D-side. :-\
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Absolutely correct ;D
The E-Side is the reason for the poor speeds!
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My sincere apologies, you will know far more about it than I ever will. :-) I'm just surprised at your sync speed given your attenuation figure, which of course takes into account thin wiring. Perhaps your wiring and green cab is rubbish in some other way. Depending on how you feel about the use of terms, do you include crosstalk under the heading of 'noise'? According to Black Sheep iirc, my wiring is the fattest copper, for most of the length at least.
If your noise is ok, then that either means that mine is ridiculously good, or it's to do with modems, filters, cables etc. I don't know what my crosstalk is like. I have no filter at all (no phone), good ultra-short dsl cable, no house-internal wiring, triple-filtered mains supply to the modems just in case and aggressive modems, I believe. So maybe the difference is in there. I've spent a lot of time over the years comparison testing-kit and swapping things over, including making some 'improvements' that are probably pseudo-science and not really relevant but can't hurt.
Can't really do any more. Tried a 7800DXL and 800NL (better and less errors). No filer as it's a new filtered socket, short DSL cable. As mentioned before, the sync at the cab on my E-Side is only about 2.5meg with 6db.
I can get the line to sync at 2.9meg if i resync around 1pm, but it drops out come dusk around 6pm as ambient "noise" increases and the SNR drops to a level causing too many errors.
Hopefully not long till they sort the power out at the cab and we're whistling along on 50meg or so :)
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@ejs - No. But no cheating by having a broken line, otherwise you could knacker your own setup to win the prize.
So why would you be interested in people with slow ADSL speeds who could switch to FTTC to get better speeds, but haven't?
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An acquaintance in Wales lives in a remote spot, a mile away from the public roads through Forestry Commission land.
OR have done a lot of work over the years to get and keep his ADSL connection working.
I think he said his line was 7 miles long, and on a good day his download speed is still considerably less than 1 Mbs.
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So it would seem to be Wales vs Wales at the moment.
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A friend of mine moved to a beautiful converted farmhouse in Wales last year and initially their sync speed was somewhere around 100 - 150 kbps with frequent disconnects and unable to hold a connection for long.
Nothing BT could do and still no FTTC from their cab. I just tried to put their phone no in the BTw checker, but it appears to be down atm (invalid security cert).
My checker says
Distance:- Direct: 4.97 km
(appx)* By Road: 7.3 km
It looks like BT have now marked the line as unviable as its coming up as follows
Fixed ADSL: 0 kbps (0 Mb)
DSL Max: 0 kbps (0 Mb)
ADSL 2+ : Not Available
FTTC is available in your area.
Speed Max Min
DownStream No info No info
UpStream No info No info
Fixed ADSL: 0 kbps (0 Mb)
DSL Max: 0 kbps (0 Mb)
ADSL 2+ : Not Available
They gave up on DSL and now have a satellite connection.
I've been invited to go stay anytime I like, but not sure how I'd cope without a decent internet connection. (jk)
Im not giving their exchange out on a public forum other than to say they are in the northern part of Powys and south of Snowdonia.
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This would have put kitz' friend in a good position were it not for the fact that their service was abandoned. My lines are the very same by-road length, but I must have thick copper, as Black Sheep said, coupled with a relatively low noise per metre environment otherwise I would never get anywhere.
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The issue with the BT Wholesale checker is that even though they were warned months ago, they continued to use an SHA-1 signed SSL certificate. This means that Chrome and Firefox now block them by default. There are ways to get to it but until BTW update to a more secure hashing algorithm, they are blocked by default.
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My closest neighbour gets about 1.5 Mbps, ADSL. Over the years I've helped him on many occasions, when he called up to say it had got unstable. In those days, I got around 3-5Mbps, hence why I felt I could assist.
Come fttc I explained to him 'Your problems are over, you can now get 30Mbps or more'. He wasn't interested, and still isn't. All he wanted was stability, not speed, uses internet mainly just for email and occasional browsing. And he has a point. :)
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Yeah but FTTC would likely bring more stability. As the shorter line length means any strong tones completely outnumber weak tones, and FTTC is generally more resistant to external noise as well as removing the E side of the pair from the equation. This is especially the case if its a hauwei cabinet when g.inp can be enabled.
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Aggressive DLM also brings stability. So if you're not concerned about speed, as are quite a large number of people, a long line with BTW DLM and a 15dB target and 1-2Mbps fulfills all requirements.
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my adsl interleaved with 15db snrm wasnt stable ;)
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I can submit a candidate myself. The thinkbroadband speed test results map shows quite a few horrors in Skye, but one user in the tiny hamlet of Lùib is enjoying 160kbps downstream 240k upstream, and the entry says 'BT Wifi', whatever that means.
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I had a repair only yesterday with the EU receiving just under 200kbps with an attenuation of 84dB ...... the highest attenuation I have personally ever seen/worked on.
I was further amazed by the fact that my JDSU actually synched up on this long-line !!!!
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I need to get a JDSU and use that as my main modem, given that my most recent Openreach visitor told me he synched at 3.3 Mbps downstream. They are damn good devices anyway.
I've since spotted two other horrors on Skye, but there are no dates, so I have to disqualify these map-sourced ones. But just for fun we have:
* One poor soul on PlusNet near Àird' a' Bhàgh Sear with 0.10 - 0.19 down, 0.17 - 0.46 Mbps up.
* and a BT user at Òs with 0.1 Mbps down, 0.27 Mbps up.
Still better than ISDN. And vastly cheaper.