Re: From the ground up! in Canadian Broadband

Re: From the ground up! in Canadian Broadband http://www.dslreports.com/forum/r21010647 en Fri, 27 Nov 2009 21:08:26 EDT Fri, 27 Nov 2009 21:08:26 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,23382503 Bicephale :
Today's post reveals some significant changes/differences.

1st of all, the SNR Margin "bleeding syndrome" is much less
severe but this could be a result of the phone-line being a
lot more stable instead of the FirmWare's quality, go figure!

The marginal events revealing a 3+ dB SNR Margin boost of
at least twenty minutes each are still as puzzling as ever...

Analysis of "look-alike" daily records has been made: 1) by
grouping the records in respect to their slope (see the last
graph); 2) by keeping only those that were "in sync" (e. g.
with the expected number of samples)... Two main groups
emerged, each was 5 (Oct. 4-8) and 4 (Oct. 16-19) days
respectively. The top graph which compares them reveals
a tremendous improvement relatively to the records taken
in the previous months. The cause could be better phone-
line conditions, a more suitable FirmWare or a mix of both.

Take note how a manual reset took care of the SNR Margin
"bleeding syndrome"...

ST516v6 - Averaged Analysis (2009-Oct, 4-8, 16-19)
ST516v6 - Daily Records - RF Choked (2009-Oct, 2-19)
ST516v6 - Events (2009-Oct, 7-8, 20)
ST516v6 - Grouping Pre-Analysis (2009-Oct, 2-21)
ST516v6 FW v···20) .ZIP 425,275 bytes SpreadSheet-ready .CSV Formatted Data

]]> http://www.dslreports.com/forum/remark,23382503 Mon, 23 Nov 2009 09:57:55 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,23288471 Bicephale :
Oups! There's been a problem with the previous archived log-file...

:o

ST516 FW v6.···-30).zip 753,970 bytes
(ST516 FW v6.1 - Analysis & Comparisons (2009-Sep, 12-18, 22-30) .ZIP)

]]> http://www.dslreports.com/forum/remark,23288471 Wed, 04 Nov 2009 02:54:47 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,23174735 Bicephale :
This late data harvest was done using the same Thomson
ST516v6 as before, my experimenting setup was identical
except for its FirmWare (which i've changed to v6.1.0.5).

MoDem comparisons weren't straightforward to make this
time: i could hardly expose any daily 24 h sinuosidal noise
floor from the long-term curves as i did before, except for
the noisiest averaged group-curve (Sep. 15, 17 & 27)!

It's not clear if this was due to my change of FirmWare or
some radical modification in the phone-line behaviour as a
consequence of some seasonal influence but my Thomson
now compares reasonably well with the other DSL units...

It's still noisier once the aberrations have been rejected,
in my opinion, but this represents a definite improvement!

One feature of my ST hasn't changed a bit after i flashed
it with another FirmWare, though:

ST516 - Speeds Degrade over time, Bicephale, 2009-Oct-4

The DS SNR Margin Bleeding Syndrome remains as obvious
as ever!

ST516v6 Long-Term Averaged Curves (2009-Sep, 12-18, 22-30)
Groups (5) of individual daily records (DS SNRM is Green, Rx CRC/HEC are Blue, DS BitRate is Yellow
ST516v6 Averaged RxCRC Groups (2009-Sep, 12-18, 22-30)
MoDem Comparisons - SS4200 vs GBB2060 vs ST516v6 (2009-Sep, 12-18, 22-30)
ST516v6 FW v···-18,.zip 753,970 bytes (ST516v6 FW v6.1 - Analysis & MoDem Comparisons (2009-Sep, 12-18, 22-30) .ZIP)

]]> http://www.dslreports.com/forum/remark,23174735 Tue, 13 Oct 2009 03:35:30 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,23118252 Bicephale :
This animation shows 'DMT' captures taken at midnight,
RCO information was obtained a few minutes later from
Bell via VelCom... The numbers are only representative
of a very short time-slice compared to the 24 h graph,
as those numbers varied throughout the day.

While looking at it, try not to pay as much attention to
the error rate bursts as to the overall error rate "floor";
just observe how it's correlated to the "static" numbers,
despite the warning i've expressed right above.

Intuitively, my little animated .GIF here tends to confirm
that the Error Rate & RCO figures went up when the DS
SNR Margin went down but it does't tell which came 1st.

Was it DS SNR Margin drops which caused my Error Rate
and RCO to increase or was it Error Rate bursts instead
which caused the RCO to increase while the SNR Margin
plumetted?...

Better be safe than sorry, in my opinion, so if i'm asked
what lesson can be drawn from this at all then i'll say it
must be to search for a DSL device with the best SNRM
possible, the next step being to use some RF Choking if
suitable.

GNet GBB2060-Xi SNRM vs RCO vs Err Rate (Summer '09)

]]> http://www.dslreports.com/forum/remark,23118252 Fri, 02 Oct 2009 03:58:00 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,23071732 Bicephale :
Finally, here's something i waited for patiently... It still
tells me the same old story as when i was in Louiseville.

Siemens SS4200 vs GNet GBB2060-Xi vs Thomson ST516v6 (Summer 2009)

]]> http://www.dslreports.com/forum/remark,23071732 Wed, 23 Sep 2009 18:18:17 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,23031209 Bicephale :
I've really got some "fun" with that one... Finally, here's
a clear illustration of what "SNR Bleeding" looks like: we
can see it droping gradually as a few bins are being lost
to noise and then the link gets eventually renegotiated.

ST516v6 - Rx CRC - Ovl vs Avg (2009, Aug 22-27, Sep 3)
ST516v6 - Rx CRC (2009, Aug 16-17, 20-31, Sep 1-4)
ST516v6 - ln(Rx CRC) - (2009, Aug 16-17, 20-31, Sep 1-4)
ST516v6 FW v6 - Seasonal Transition?
ST516v6 - An···-4) .ZIP 3,403,954 bytes .CSV SpreadSheet-Ready File + SnapShots (2009, Aug 16-17, 20-31, Sep 1-4)

]]> http://www.dslreports.com/forum/remark,23031209 Wed, 16 Sep 2009 06:30:11 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22893427 Farchord : Bicephale, update your 585v7's firmware with the one I posted on the TSI forums :) IT'll fix your DMT's problems.]]> http://www.dslreports.com/forum/remark,22893427 Wed, 19 Aug 2009 16:37:46 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22892387 Bicephale :
The graphic for this later addition used only seven daily samples
out of seventeen... The rest of those samples differed so much i
decided to divide the whole set into seven groups. I believe the
present averaged curves are more representative of reality but i
included all samples into my accompanying SpreadSheet anyway
so that the reader gets the opportunity to play with a few more
scenarios, like i have. The graph from above corresponds to my
3rd group of sample, i tagged those the "look alikes"...

GBB2060-Xi Analysis (2009, Jul 24,28,30-31,6,8,14)
GBB2060-Xi A···14) .ZIP 1,302,231 bytes

]]> http://www.dslreports.com/forum/remark,22892387 Wed, 19 Aug 2009 13:45:14 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22836972 Bicephale :
Time to immortalize test results, while i think of it...

Those are the test sites i use (1 out of 3 tries each):

http://testvitesse.videotron.ca/
http://speedtest.cogeco.net/
http://www.mountaincable.net/index.php?id=3,114,0,0,1,0

Here's a link to the page where such results are shown:

http://www.dslreports.com/testhistory/1267354/b1adc

...and this is a link to the RF Choking experiment (top):

RF Choking (on the WAN side), Bicephale, 2009-Jul-18

VelCom - DSL Reports Test Results (2009-Aug-8)

]]> http://www.dslreports.com/forum/remark,22836972 Sat, 08 Aug 2009 18:04:04 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22762766 Bicephale : Thank you everyone for your contributions!

:D]]> http://www.dslreports.com/forum/remark,22762766 Fri, 24 Jul 2009 21:58:38 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22757047 anon : In my case both SNR and occupancy were jumping.

Occupancy would jump like 2 points or more that I noticed. That value should be very stable. Yours is already high.

no other clue i can offer.]]> http://www.dslreports.com/forum/remark,22757047 Thu, 23 Jul 2009 21:23:33 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22756969 Bicephale : All right. What i meant was what parameter i should try to monitor?

• Attenuation
• Voltage
• Etc...]]> http://www.dslreports.com/forum/remark,22756969 Thu, 23 Jul 2009 20:57:38 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22755718 anon : Evidence?

Unless you can measure voltage cross, or find a tech willing to check it out, or get an "honest" test center person at bell to monitor your line and communicate with you (maybe privately), no clue.

I will be very impressed if you find a way to do this (provide evidence) Bicephale.

Maybe a couple of electro-engineers/techs could help you find the answer, or some uni-prof (maybe some forum with these experts)?]]> http://www.dslreports.com/forum/remark,22755718 Thu, 23 Jul 2009 17:18:49 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22755575 anon :

said by Bicephale

:

What do i need to monitor in order to capture positive evidence?

There are current telco techs with more dsl training than I in this forum »AT&T Southeast that could probably answer that. Try a thread there.]]> http://www.dslreports.com/forum/remark,22755575 Thu, 23 Jul 2009 17:17:51 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22755318 Bicephale : What do i need to monitor in order to capture positive evidence?]]> http://www.dslreports.com/forum/remark,22755318 Thu, 23 Jul 2009 16:08:36 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22754700 anon :

said by Bicephale

:

Now will someone care to explain the "voltage cross" concept?

Hmm while looking up "stary current" I came across this:
"Stray Voltage"
»en.wikipedia.org/wiki/Stray_voltage

It *appears* to fit in with what "ex bell" said. But the article is more geared to heavy power lines.

But it should be similar, *I think*.

I never was able to find something telco-related on this.

"ex bell" should add this info to a one of the wiki sites on DSL (along with "cut-ahead").

It's something ignored a lot (both terms) and kind of hidden from the user since it's a sign on the quality, age and neglict on part of the telco's.]]> http://www.dslreports.com/forum/remark,22754700 Thu, 23 Jul 2009 14:53:35 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22754563 anon :

said by U got it :

Don't get me going now...

No, you've got some reading on the new Cogeco AUP to get done.]]> http://www.dslreports.com/forum/remark,22754563 Thu, 23 Jul 2009 14:19:48 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22754486 anon :

said by ex bell :

(well should).

Bingo again.
"should" is the operational word.

Don't get me going now...]]> http://www.dslreports.com/forum/remark,22754486 Thu, 23 Jul 2009 14:03:36 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22754465 anon :

said by ex bell :

He cut ahead, techs are instructed not to do this. After your terminal your F2 or F3 pair may travel quite a distance.
This shortens the loop, removes potential imbalances and metallic issues. Drop cuts are when crews replace drops wires.

Bingo, that's it.

ty for correcting it.

Wish I could explain it Bicephale, I look at it like a short (or stray current).

My line, on a good day, had a 14-volt voltage cross (when everything was good). 14 volts or so caused some static on the phone.

2 or 3 tech's measured the same thing and they called it a voltage cross which they say is different than a short.

On semi-good days, everything was down and non-functional (no clue what the voltage cross reading was on those days).

What you have is a little less than what I had, but no different from what I see. In my belief you will have to cause a bigger problem as stated above to get anywhere.

But I see no difference.

Must be stray current between pairs?

I couldn't tell you. I too would like to know what this mysterious voltage cross is that isn't a short.

You need a good tech (which isn't standard with bell), all I can truly say.

My fix took 6-weeks with lots of bitching and calls/emails to Crull/executive office. The first time I had this it was 2.5 to 3-month to repair.

So like I said, with you not being a Bell customer, you are going to be left to rot unless you pull some dirty tricks.]]> http://www.dslreports.com/forum/remark,22754465 Thu, 23 Jul 2009 14:00:07 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22754123 anon :

said by Bicephale

:

Now will someone care to explain the "voltage cross" concept?

Just means a there is metallic to another pair. You are getting voltage conducted from one or more conductors in a cable to your pair.

Very common. Most often in your F1 or F2 pair. Can occur in multi pair drop and bsw.

Test board will catch this right away as well as dispatched tech. on a repair ticket (well should). ]]> http://www.dslreports.com/forum/remark,22754123 Thu, 23 Jul 2009 13:08:57 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22754060 Bicephale : Thanks everybody for your insight!

Now will someone care to explain the "voltage cross" concept?

It evokes words like "crowbar", "shunt", well that sort of things
but i could be wrong...]]> http://www.dslreports.com/forum/remark,22754060 Thu, 23 Jul 2009 12:50:57 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22753963 anon :

said by damned if i know :

He also shortened my loop by removing me from the loop, I think they call it drop cutting maybe? (that alone dropped my attenuation 4 points and my SNR jumped up by 4 more points). But you don't hear of many techs doing this any more at all.

He cut ahead, techs are instructed not to do this. After your terminal your F2 or F3 pair may travel quite a distance.
This shortens the loop, removes potential imbalances and metallic issues. Drop cuts are when crews replace drops wires.

The voodoo is all in the tech you get, if you play dirty a bit like above.

Good advice with Bell, fight fire with fire.

With the high turnover at Bells contractor BTS it is only luck of the draw if you get a competent tech.

Even then he has to be willing to go the extra mile (they are unionized after all) and bend the rules. There are some out there though.]]> http://www.dslreports.com/forum/remark,22753963 Thu, 23 Jul 2009 12:40:47 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22752989 anon : Exactly.

Been there done that, have the t-shirt.

But my voltage cross was bad. I either had static on the phone or no DSL.

I had around 6 or 7 tech visits.

Finally one guy took it in his own hands and fixed it (but I had to contact kevin crull).

Bell will not do anything for a 3rd party ISP, nor will they do anything for their own customers unless they bitch to high hell.

That's why I said he will have to play some dirty games and create a short on his line killing his DSL just to get a tech out and tell his ISP/tech its intermittent (when it rains and when there is lots of wind etc).

Then cross fingers and pray.]]> http://www.dslreports.com/forum/remark,22752989 Thu, 23 Jul 2009 09:31:02 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22752626 dslrocker3 : good luck with that.... I've been trying for the past 5 years to fix a voltage cross on my line (have been told by a few different field technicians that this problem exists on my line). Short version of a long story: they won't do anything about it.]]> http://www.dslreports.com/forum/remark,22752626 Thu, 23 Jul 2009 07:10:07 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22751901 anon :

said by Bicephale

:

...
So, if i've read you correctly, according to what you
would normally expect, the DownStream Attenuation
level is higher than it's supposed to be and this could
result from leaky insulation, etc., causing a shunting
effect in the higher DSL band?... If so, now that i've
done all i could to ascertain that i have no issue with
HardWare i'm directly responsible for - even beyond,
actually! Euh... All that remains to be done is find a
way to get Bell to change their drop-line.

Easy!

But how do i do that?!?...

I didn't say the downstream attenuation is higher than its supposed to be. The attenuation could be good.

What I'm getting at is that given your speed, path and the great values on upstream (all upstream values are nice), your occupancy on the downstream is out of whack, which is indicative of a short or voltage cross.

If it was a short some place I would expect your attenuation to be higher and your SNR jumping more, so I won't say its a short, but rather a voltage cross (This is how a couple of techs explained it to me) on the outside line.

If it was anything major, during the spring or fall (or early winter) it would likely have shown more, but it didn't.

From what I make out your SNR is jump (High and low) from around 11.5 to 7.5, or about 4 points.

If it jumps 2 points at most I would say that's stable for DSL. At 4 its problems, especially since you are 1.5 points away from disconnects and other issues. Toss in that 95% occupancy and it adds up to a voltage cross.

I couldn't begin to tell you how to get someone out to fix it, unless you purposely cause a short on your line (if you have land line try and fix it so you have static when you call).

Get a ticket open and get a date.

Bell will monitor the line from the test center, so every hour or so cause a short to make everything stop working (make a load).

When the tech is there make sure the short you made is gone, show him your stats and graphs (if you get a beginner your shit out of luck) and tell him its the line pair.

A half decent tech will test the available pairs and give you the best ones. Get the stats before he leaves and tell him if its better or not and to keep changing pairs till it's better, or if it's worse have him put the old pair back.

This is the only monkey business I can think of to get a tech out to you. Otherwise both the ISP and Bell will ignore you.

If the ISP is decent they will play along with you and record Loss of sync to submit to Bell etc.

Chances are Bell will just drop your profile and you will have to argue with your ISP to bump it up again because Bell likes their short-cut band-aids to fix things.

Or offer a case of 24 to a local tech you find or a tech from the forum if you know of one near you.

This is how it appears to me, and this is how I think you will get any response at all (and it all depends of the quality of the tech you get).

Once they sent me a phone tech who didn't do DSL and he dropped my 3-meg connection to 512 and told me my phone static was fixed and he left me like that when I said no way. heh.

So make sure you get a high-speed tech and not a phone tech.

I see nothing else. We both know the ISP won't do nothing for an SNR jumping 4 points and Bell will do everything possible to ignore you if you are not their customer since you have no one to complain to like Kevin Crull.

It's market forces.

Also, it may not be the drop line itself, but rather a bad pair from where-ever the cable comes from that feeds you to the drop line.

The guy who came here to finally fix the issue had to drive like 4 blocks away to change pairs, then he would come and hook it up in the box up on the pole that my drop was connected to.

He also shortened my loop by removing me from the loop, I think they call it drop cutting maybe? (that alone dropped my attenuation 4 points and my SNR jumped up by 4 more points). But you don't hear of many techs doing this any more at all.

The voodoo is all in the tech you get, if you play dirty a bit like above.]]> http://www.dslreports.com/forum/remark,22751901 Wed, 22 Jul 2009 23:45:21 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22751388 Bicephale : Hi,

Well, i should confess that i did become suspicous of
my drop-line somewhat when i catched these events:

From the ground up!, Bicephale, 2009-Jun-22

From the ground up!, Bicephale, 2009-Jun-28

So, if i've read you correctly, according to what you
would normally expect, the DownStream Attenuation
level is higher than it's supposed to be and this could
result from leaky insulation, etc., causing a shunting
effect in the higher DSL band?... If so, now that i've
done all i could to ascertain that i have no issue with
HardWare i'm directly responsible for - even beyond,
actually! Euh... All that remains to be done is find a
way to get Bell to change their drop-line.

Easy!

But how do i do that?!?...

]]> http://www.dslreports.com/forum/remark,22751388 Wed, 22 Jul 2009 21:46:52 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22751133 anon :

said by Bicephale

:

See the difference!?... Where's the noise from?!!

The outside line itself probably has a minor voltage cross.

Why are you busting your butt when Bell should change the line or pair for you (good luck fighting with your ISP to get that type of service).

The occupancy is also very high.

What is strange is the very low attenuation on your upstream. I would expect it to be much higher if it was all a distance issue. Very clean upstream channel it seems (without looking at all your graphs)

I bet on a clean line (or pair change) your SNR would not go up by much more than 5-7 points points given the speed, attenuation, occupancy and path.

I claim it is a minor voltage cross on the line and you need a pair change. Once changed the occupancy will drop to high 80`s to low 90`s.

All fits the symptom of a defective outside line to me since you put so much work on the inside.]]> http://www.dslreports.com/forum/remark,22751133 Wed, 22 Jul 2009 21:01:49 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22750924 Bicephale : One year later (or so)...

I moved my DSL device to a shelf located right
behind the NID and installed a POTS Splitter...

I used Stand-Off Cable Supports to move Bell's
drop-line away from the house's PVC electrical
power conduits.

I "tweaked" and added RF Chokes but, no matter
what i done, it seems Bell keeps reclaiming every
parcel of room i manage to free for myself when
i look back at my 1st days here:

From the ground up!, Bicephale, 2008-Jul-31

See the difference!?... Where's the noise from?!!

VelCom - Limoilou - The Next Summer

]]> http://www.dslreports.com/forum/remark,22750924 Wed, 22 Jul 2009 20:17:18 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22730320 Bicephale : These later results inspired a separate thread:

»RF Choking (on the WAN side)

]]> http://www.dslreports.com/forum/remark,22730320 Sat, 18 Jul 2009 17:58:04 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22722945 Bicephale : Here's an averaged curve made of the 6T/15T consecutive periods...

Siemens SS4200 - 12 Days Avg Curves (2009, Jun, Jul)

]]> http://www.dslreports.com/forum/remark,22722945 Fri, 17 Jul 2009 10:35:05 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22721451 Bicephale : Call me lunatic!

Here's what this required:

• Lots of patience
• Some work
• No fancy formulas

Only common sense...

Siemens SS4200 - DS SNR - (2009-Jul, 7-12)
Siemens SS4200 - Rx CRC - (2009-Jul, 7-12)
Siemens SS42···12) .ZIP 720,532 bytes
RF Choking Comparisons (2009, Jun 30, Jul 1-5 & 7-12)
Siemens SS4200 - RF Choking (2009, Jun-30, Jul 1-5 & 7-12)

]]> http://www.dslreports.com/forum/remark,22721451 Fri, 17 Jul 2009 00:15:39 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22699477 Bicephale :
I just can't match a pair of daily stories among any of those, it must be a summer thing!...

Siemens SS4200 - DS SNR (2009, Jun-30, Jul 1 to 5)
Siemens SS4200 - Rx CRC (2009, Jun-30, Jul 1 to 5)

]]> http://www.dslreports.com/forum/remark,22699477 Mon, 13 Jul 2009 12:08:38 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22635235 Bicephale : Now lets try the SpeedStream...

Noise daily records varied considerably.

Downward variations in my 4 days SNR Margin averaged curve remind me of this somewhat:

Click here to soom in!

Siemens SS4200 vs DMT - Avg DS SNR (2009-Jun, 21-24)
Siemens SS42···24) .ZIP 477,392 bytes
Siemens SS4200 vs DMT - Analysis with filtering (2009-Jun, 21-24)

]]> http://www.dslreports.com/forum/remark,22635235 Tue, 30 Jun 2009 15:06:40 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22625978 Bicephale :
Even more highlight...

TP-Link TD-8841 vs RouterStats - SNR Event (2009-Jun-13)

]]> http://www.dslreports.com/forum/remark,22625978 Sun, 28 Jun 2009 22:19:59 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22623053 Bicephale :

Just a complement to highlight a feature which catched my eye previously...

TP-Link TD-8841 vs RouterStats Log (2009-Jun, 9, 13)

]]> http://www.dslreports.com/forum/remark,22623053 Sun, 28 Jun 2009 07:45:29 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22591933 Bicephale : Now i'm puzzled!

Is my drop-line sane?...

TP-Link TD-8841 vs RouterStats Log (2009-Jun, 11, 14-15)
TP-Link TD-8···15) .ZIP 908,724 bytes
TP-Link TD-8841 (A) vs RouterStats (2009-Jun, 9, 13)

]]> http://www.dslreports.com/forum/remark,22591933 Mon, 22 Jun 2009 15:17:12 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22580745 Bicephale :
I wish i had been made aware of it years ago:

Trev's SNMP Utility v0.1.0.9 (2007-Apr-8) for the Siemens SpeedStream 4200

Finally, 'DMT v9.01' can have two of its empty fields filled!...

DMT v9.01 vs Siemens SS4200 SNMP Utility v0.1.0.9

]]> http://www.dslreports.com/forum/remark,22580745 Fri, 19 Jun 2009 21:26:25 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22579613 Bicephale :
I always wondered what's inside a POTS Splitter so here it is,
while the Fun-Jin ADS302G ADSL Filter which came with my
TP-Link MoDem is in place...

I almost forgot that one, looks like Europeans get better deals:

Click here to zoom in!

WilCom PS-15-01 i3S xDSL POTS Splitter Schematic

]]> http://www.dslreports.com/forum/remark,22579613 Fri, 19 Jun 2009 17:13:34 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22565490 Bicephale : It was nice while it lasted!

VelCom - TP-Link TD-8841 vs RouterStats (2009-Jun-16)

]]> http://www.dslreports.com/forum/remark,22565490 Wed, 17 Jun 2009 11:18:07 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22552491 Bicephale :

No SpreadSheet number crunching, just some relatively simple/lazy graphic editing...

VelCom - June's Enigma (New MoDem Site, 2009)

]]> http://www.dslreports.com/forum/remark,22552491 Mon, 15 Jun 2009 04:34:26 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22544461 Bicephale : Now, the new stuff...

Here's what i've done to my phone-line wiring lately:

I didn't want to use iron tubes for shielding because of the heavy
crasftsmanship this requires so i chose an easier alternative: air!

Then i drilled a hole into the brick-wall, right behind the NID, and
i installed shelves on the ofther side, below an RJ-11 connector
box, in order to benefit from my new WilCom POTS splitter to its
full potential by locating the DSL unit as close as possible to the
NID...

No need to mention that CAT-5 wiring would be pointless here!!!

I've been considering many experiments (like RF Choking, etc.) so
the WAN-side setup went through a few changes but the "SNR"
curves collected by 'RouterStats' so far appear to confirm that it
was a rather good move to get closer, finally...

Telephone Wiring - The Final Touch (2009-Jun-12)
Old vs New DSL Device Location SNR Figures

]]> http://www.dslreports.com/forum/remark,22544461 Sat, 13 Jun 2009 03:05:17 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22544325 Bicephale : Hi everyone,

The testing configuration which i've used since last fall has
changed significantly on June 8, 2009. Briefly put, all of my
future "noise" curves won't compare readily with old ones...

Now, about the present post, wild temperature & humidity
variations have returned with the last few weeks and i find
that it shows as it was difficult to decide which samples i'd
be able to average together. In the end, i created a set of
three categories. These are corresponding to:

• Green - Quiet
• Yellow - Normal
• Purple - Noisy

As for my 2nd graphic, it simply averages them all together.

VelCom - TP-Link TD-8841 (2009, May-28 to Jun-5)
TP-Link vs R···-5) .ZIP 236,861 bytes
VelCom - TP-Link TD-8841 (Total, 2009, May-28 to Jun-5)

]]> http://www.dslreports.com/forum/remark,22544325 Sat, 13 Jun 2009 01:47:37 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22447816 Bicephale :

Both 'DMT v8.07' and 'RouterStats v5.2d' were being run
simultaneously on a dedicated machine... Disconnections
occured if starting 'DMT' or accessing the device's HTTP
GUI from the main PC.

'RouterStats' using TP-Link TD-8841 HTTP GUI

]]> http://www.dslreports.com/forum/remark,22447816 Tue, 26 May 2009 18:03:45 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22440947 Bicephale : Oh! "A dip on the SNR" curve!... I rarely pay attention
to SNR Margin curves so i thought in terms of noise...]]> http://www.dslreports.com/forum/remark,22440947 Mon, 25 May 2009 14:39:20 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22440870 Bicephale : Hi DabberDan,

I tought a dip is where a curve drops but yes, it's visible
indeed and i can even see another of those emerging at
diner time so it's quite likely i still observe what i tagged
the "Cooking Hour Syndrome"... For one who did read my
thread from the begining it may seem like "The Monster"
keeps wandering around as well, actually.

My testing conditions didn't change since last fall but i'm
now ready to move the DSL unit to a shelf installed right
behind my NID, about ten inches from it, on the opposite
side of the wall: a ¼" hole is waiting for a short length of
telephone cable to bridge that gap but i wish to collect a
better defined curve 1st so i probably won't proceed with
that displacement before next week. Once i'm done, that
damn ugly mess which remained in a corner of my kitchen
for months will be history, at last!

My only fear is that while the MoDem moves further from
"The Monster" it will also get closer to the electric power
panel so my fingers are crossed...

]]> http://www.dslreports.com/forum/remark,22440870 Mon, 25 May 2009 14:15:57 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22440521 DabberDan : You get a dip on the SNR around 6pm too :)]]> http://www.dslreports.com/forum/remark,22440521 Mon, 25 May 2009 12:39:03 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22436534 Bicephale : Well,

Here's my 1st long-term "noise" curve. It was intended to
last for a whole week but the application couldn't connect
with the unit any longer past some time early this morning
so i had to reboot it in order to make it work again - which
is why i'm only publishing a two days record, unfortunately.

TP-Link TD-8841 Analysis (2009-May, 22-23)
VelCom - TP-···23) .ZIP 133,768 bytes

]]> http://www.dslreports.com/forum/remark,22436534 Sun, 24 May 2009 12:15:59 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22432673 Bicephale : Hi everyone,

With these images i personally confirm features which
justified my purchase in the 1st place. If we can trust
sources like some old D-Link DSL-2320B thread where
it was shown that 'RouterStats' was compatible with a
very similar GUI outline then it becomes reasonable to
expect the same level of compatibility with the TP-Link
TD-8841 HTTP GUI - although this would be of limited
use considering that 'DMT' and 'OrbMT' work just fine.

I've played with Spectral Shaping on the UpStream side
and the altered spectral response is clearly displayed in
my 'DMT v8.07' capture, future experiments will have to
include the DownStream side in presence of disrupting
noise: i must verify the usefulness of Spectral Shaping
in the TP-Link TD-8841, eventually!...

TP-Link TD-8841 GUI (2009-May-20, 9h00)
TP-Link TD-8841 (A, FW v2.2) vs 'OrbMT v3.38'
TP-Link TD-8841 - ADSL Cfg Tone Tweak (GUI)
TP-Link TD-8841 - ADSL Cfg Tone Tweak ('DMT')

]]> http://www.dslreports.com/forum/remark,22432673 Sat, 23 May 2009 10:16:17 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22429503 Bicephale : Hear the news: it's here!

I sent a 57.37 $ postal money order via eXpressPost
to Premier Computer Canada on May 15 at 12:33 and
my brand new TP-Link TD-8841 (A) v2.2 arrived thru
UPS "domestic" (19.65 $) on May 20 at 8:35 (Monday
was Victoria Day). I paid 34.99 $ (no taxes included)
for the item itself, the grand total cost was 73.03 $...

Here are my 1st tweak evaluations using 'DMT v8.07':

»/testhistory/1267354/b1adc

VelCom - TP-Link TD-8841, 'DMT v8.07' Tweaks1 (2009-May-20)
VelCom - TP-Link TD-8841, 'DMT v8.07' Tweaks2 (2009-May-20)

]]> http://www.dslreports.com/forum/remark,22429503 Fri, 22 May 2009 15:31:36 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22360862 Bicephale : Now lets put some curves on top of each other to ease comparisons...

]]> http://www.dslreports.com/forum/remark,22360862 Fri, 08 May 2009 18:41:42 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22360794 Bicephale : Hi statistic lovers,

I had one large capture gathered this winter which
remained to be parsed... It's an interesting sample
for me because i've noticed a "bias" effect after my
record was separated into two sets: one which has
nicely aligned time-stamps and another where those
hour marks reveal some "jitter". See what happened
when i decided to superpose the curves instead of
averaging them as usual!... In my opinion, it's partly
due to the rejection of marginal "sparkle" events: it
defines/flattens a curve when those aren't allowed
to contaminate it. As a consequence, this suggests
i'll need to pay more attention to the duration of my
future tests (if i decide to go on) in order to make
sure that each curve undergoes a same amount of
filtering, hence removing the same amount of bias...

GNet GBB2060-Xi - Superposed vs Averaged Noise Curves
GNet GBB2060···-2) .ZIP 638,724 bytes GNet GBB2060-Xi Analysis (2009, Feb-16 to Mar-2)

]]> http://www.dslreports.com/forum/remark,22360794 Fri, 08 May 2009 18:23:49 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22221502 Bicephale : Finally...

I wondered about this one for a long time. Something
told me my GNet could compare with my SpeedStream
in terms of noise but it's DownStream SNR Margin was
not expected to beat those of my Siemens SS4200 &
of my Thomson ST546 altogether. The mix of optimum
SNR Margin and of Noise performance may result from
lower Attenuation levels - which could relate with the
input stage design. Should it be true, the Attenuation
levels observed while evaluating different DSL MoDems
may happen to be an important parameter for persons
trying to decide which product to buy! There are other
criterias to consider than noise performance alone but
it seems possible Attenuation level variations between
products might be more significative than i suspected.

GNet vs Siemens vs Thomson - DownStream SNR Margin & Rx CRC

]]> http://www.dslreports.com/forum/remark,22221502 Sat, 11 Apr 2009 17:12:46 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,22182129 Bicephale : Hi everybody,

I wanted to publish this one for quite a while but that's
a set of fifteen days averaged curves so the time never
seemed right. Finally, here it is and not too soon!... This
will be followed by some commented comparisons later.

:D

GNet BB0060B Averaged Noise Curves (2009-Jan, 10, 12 & 14 to 26)
GNet BB0060B···26) .ZIP 332,378 bytes GNet BB0060B .CSV Record (2009-Jan, 10, 12 & 14 to 26)

]]> http://www.dslreports.com/forum/remark,22182129 Sat, 04 Apr 2009 09:51:35 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21958490 Bicephale : Hi everyone,

I revisited 'RouterStats' lately, it's most regrettable
we don't see it being more popular and especially in
the cases where the MoDem seems to be orphaned
by all of the other 3rd-party trouble-shooting tools!

Isn't it?!...

'RouterStats v4.8' Setup for GNet GBB2060-Xi (real-life tutorial example)

]]> http://www.dslreports.com/forum/remark,21958490 Sun, 22 Feb 2009 17:30:04 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21705497 Bicephale : Have a nice 2009 year everyone...

:)

Looking at this old post i just noticed how the "Sweet Spots" differ:

From the ground up!, Bicephale, 2008-Aug-26

Tones: Register '00' = #40)h DownStream Bitrate & RCO: Register '00' = #80)h DownStream SNRM: Register '00' = #C0)h

Of course, the absolute values for Register '00' depend on local conditions...

;)]]> http://www.dslreports.com/forum/remark,21705497 Thu, 08 Jan 2009 18:54:24 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21579726 Bicephale :

Here's the original 'DSL_StatScope' data with a graphic capture:

Click here to enlarge!

The picture is from this thread:

TekSavvy Forum, Yet Another Modem Statistics tool, Bicephale, 2008-Dec-14

'DSL_StatSco···-GE .ZIP 645,643 bytes
'DSL_StatScope v1.0' - Thomson ST516v6 FW 6.2.29.2-GE .ZIP

]]> http://www.dslreports.com/forum/remark,21579726 Sun, 14 Dec 2008 11:07:51 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21578089 Bicephale : More long-term averaged samples...

VelCom - Thomson ST516v6-2 (2008, Nov-30 to Dec-10)
VelCom - Thomson ST516v6-2 vs SS4200

]]> http://www.dslreports.com/forum/remark,21578089 Sat, 13 Dec 2008 21:39:16 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21557406 Bicephale : N.B.:

The 'PureOS-Light' Live CD with 'GNUmeric'
installed on it is available as an English CD:

'PureOSlight 0.3 beta 1 EN' (Torrent)]]> http://www.dslreports.com/forum/remark,21557406 Wed, 10 Dec 2008 08:38:50 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21554465 Bicephale : Hi TerTech,

Oh... I didn't think of the MidNight MadNess Syndrome
but most people would use batteries for that, after all!

:o

Well, i do remember that your error rate was significant
(if not severe) so maybe when you observe instabilities
it just might be the case, actually. I wouldn't pretend i
follow laboratory-grade methodology here but i feel that
averaging fifty-thousand-six-hundred samples (one per
fifteen seconds for ten days) as i've done lately should
help to reject marginal events... The most potent ones
can still be equivalent to millions of CRC errors per day
so a few of these will contaminate a curve all right but
they tend to be quite brief and they're easy enough to
recognize anyway. The animated .GIF shown above was
made after marginal events were removed as 'GNUmeric'
won't display the curve's most significant part otherwise:
large numbers completely upset its auto-scale feature as
i explained in a previous post. The rest was done using a
graphic editor (no fancy trick)... My 2nd illustration isn't
well detailed but we can see the counter values may fall
in the four digits range if a MoDem Reset event occurs...

:uhh:

There must be a way to filter out contaminating events
in a spreadsheet but i don't know how to do that. What
we have here is a simple approximation, some educated
guess one might say. The 'DMT' capture was suggesting
an error rate of about 1978 CRC Errors per Day, which is
37 % higher than my estimated 1238 CRC Errors per day,
possibly because of contamination. This pleads in favour
of long-term averaging curves instead of static numbers
once again, in my opinion.

:p

VelCom - SS4200 Long-Term Analysis (2008-Nov, 19-28)
VelCom - Siemens SpeedStream 4200 MoDem Reset
VelCom - 'DMT v9.01' Capture (End of Test)

]]> http://www.dslreports.com/forum/remark,21554465 Tue, 09 Dec 2008 17:21:49 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21544240 tertech :

said by Bicephale

:

I conclude that the best method to compare
DSL devices is through curve supperposition
considering that static numbers alone might
prove to be relatively useless. A set of 'DMT'
captures is provided to the attention of any
reader who's curious enough to attempt his
own separate analysis.

I've found it difficult to use any captured statistics to compare two modems or even to compare different firmware versions on the same modem. Noise tends to be random for me. Sure, there's the predictable 'cooking hour' noise surge; but I've also seen the 'morning shower hour' noise surge and even the 'midnight madness' noise surge. Some weeks the stats are worse than average, some weeks they are better. I believe that even the weather plays a part in the performance of the modem. Unless there were a way to hook up two modems to the same line at the same time - how can we be sure that the statistics we collect for each unit under test were taken under the exact same conditions? ]]> http://www.dslreports.com/forum/remark,21544240 Sun, 07 Dec 2008 21:18:35 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21542534 Bicephale : Hi everyone,

I'm posting a revised version of a previous
graphic to account for its error rate scale;
resolution being fifteen seconds it means a
level equal to 15 is equivalent to one error
per second... The three other illustrations
are resulting from an analysis of my lastest
'DMT' "Diagnosis" log file with the Siemens
SpeedStream 4200 on-line. The 3rd set of
curves is particularily interesting because
it compares it with my SpeedTouch 546v6.

The 4th picture is to shead light on what i
call the "Cooking Hour Syndrome", i've used
graphic editing tricks to bring focus on the
most significant part of the curves, mainly
the Rx (middle) section. I would have liked
to include daily error rates on the graphics
but it appears static numbers are misleading
at best: MoDems react differently to resets
and the false error counter readings upset
the daily error rates quite unpredictably...

I conclude that the best method to compare
DSL devices is through curve supperposition
considering that static numbers alone might
prove to be relatively useless. A set of 'DMT'
captures is provided to the attention of any
reader who's curious enough to attempt his
own separate analysis.

VelCom - Thomson ST5x6 9 Days Average Curve (2008-Nov, 9-17)
VelCom - Siemens SS4200 10 Days Averaged Curves
VelCom - Thomson ST546 vs Siemens SS4200 (2008-Nov)
VelCom - SS4200 Cooking Hour Syndrome (2008-Nov, 19-28)
Siemens vs T···ov) .ZIP 485,882 bytes Siemens vs Thomson (2008-Nov)

]]> http://www.dslreports.com/forum/remark,21542534 Sun, 07 Dec 2008 15:11:38 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21457733 Bicephale : Three points today:

1) SNR Margin is still relatively clueless
2) Noise Induction Path now confirmed
3) Cooking Hour Syndrome is revealed!

The Noise Induction Path was ten feet
long and it's now practically reduced to
zero by moving the line away from that
nasty PVC power conduit. The old wire
with paint on it is mine, at least i didn't
get the one with a loop... Oh lucky me!

:p

If one must trouble-shoot i recommend
using long-term noise curve averaging.

:D

VelCom - Cooking Hour Syndrome 2 (2008-Nov, 9-17)
VelCom - Noise Induction Path

]]> http://www.dslreports.com/forum/remark,21457733 Thu, 20 Nov 2008 13:21:00 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21435604 Bicephale : Hi everyone,

This six days .GIF animation shows how clueless SNR Margin curves
can be. It's also demonstrating the power of long-term averaging...

;)

Click here to zoom in!

]]> http://www.dslreports.com/forum/remark,21435604 Sun, 16 Nov 2008 10:30:06 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21226920 Bicephale : It seems 'GNUmeric' works too.

Linux solutions: 'OpenOffice Calc' vs 'GNUmeric'

]]> http://www.dslreports.com/forum/remark,21226920 Tue, 07 Oct 2008 01:39:44 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21224923 Bicephale : Well...

'OpenOffice Calc v2.3.0' from 'Scientific Linux Live DVD v5.2'
didn't display the same bug as that which i observed using its
late Windows version: i can add/fill the required columns and
produce a suitable graphic representation under this Live DVD,
including the DSsnr column which was being corrupted before.

'Scientific Linux DVD v5.2' vs SS4200+'DMT v9.01'

]]> http://www.dslreports.com/forum/remark,21224923 Mon, 06 Oct 2008 18:38:33 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21218183 Bicephale : Hi Corkyy,

I've tried 'KSpread' (the 'KOffice' SpreadSheet application) on
three different Linux Live CDs including 'KOffice v1.6 Live CD'
and it's consistently slow: each column filling would make it
too busy to respond for the next twenty minutes or so at max.
resolution (a fifteen seconds interval means over five thousand
samples per day)! The Linux flavours were KUbuntu, Fedora and
SlackWare so the environment isn't really a determining factor.

I found 'GNUmeric' installed on the 'PureOS-Light' Live CD but
this one got a French-European keyboard layout which was a
pure nightmare... I'd hate having to install MicroSoft's 'Excel'!

:p

Maybe i need to reduce the file size by cutting a few columns.]]> http://www.dslreports.com/forum/remark,21218183 Sun, 05 Oct 2008 11:04:51 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21212870 Bicephale : Hi Corkyy,

Thanks! It must be possible to find a 'KOffice' module
for the Slax Linux Live CD so i'll check with that one.

:)]]> http://www.dslreports.com/forum/remark,21212870 Fri, 03 Oct 2008 21:16:19 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21211905 corkyy : »www.koffice.org/releases/2.0beta···ease.php

Maybe koffice, but I never done the setup in windows...

»www.gnome.org/projects/gnumeric/···ds.shtml

Same for this one]]> http://www.dslreports.com/forum/remark,21211905 Fri, 03 Oct 2008 17:42:17 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21211311 Bicephale : Bug exposed in 'OpenOffice v2.4.1' and more!

My partial representation of a recent 'DMT' capture reveals
some flawed logic in 'OpenOffice Calc': quite clearly, there
are errors in the "DSsnr" column which seem to affect the
"txHEC" column as well. This doesn't explain the odd value
found in the "txHEC" column (time index 1222864053): the
counter went backwards, which points either at a problem
in the Siemens SS4200 MoDem/Router, 'DMT v9.01' itself
or a combination of both (corrupted exchange via TelNet).

In one case the errors are generated in 'OO Calc' alone but
in the other its originating from the "Diagnosis" capture file.

:uhh:

Can anyone suggest alternative FreeWare SpreadSheets!?

:o

'OpenOffice v2.4.1' Glitches (2008-Oct-1)
VelCom - SS4···-1) .ZIP 25,949 bytes

]]> http://www.dslreports.com/forum/remark,21211311 Fri, 03 Oct 2008 15:50:09 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21178986 Bicephale : Hi again,

These additions end what i consider to be the
preliminary phase of this thread, which was to
establish an acceptable test-bench for future
evaluations... The present set is particularily
puzzling because of the paradoxal relationship
between the connection's rate and the browser
(final) speed, not to mention the way a lower
CRC Error rate fits into the overall picture.

Here's a perfect opportunity to refer to this:

Speed slower than expected (Elite), d_l, 2007-Sep-16

I'm confident this graphic is right on topic here.

;-)

As a conclusion about the "rescue" tweaks, i'm
tempted to declare that the Thomson SpeedTouch
5x6v6 device displayed a superior potential if
compared to GNet's BB0060B/GBB2060-Xi units.

Most unfortunately, i was forced to DownGrade
my ST's FirmWare for a total of eleven levels just
to find one which is 'DMT'-friendly enough to
support the required MoDemOption feature! No
MoDem including my Siemens SpeedStream 4200
has been able to fall-back gracefully down to the
required connection speed; it appears all of those
products are targeting an SNR Margin level instead
of some tolerable amount of noise. I guess that
this could be corrected but lets not count on it...

In any case, the ST5x6v6 owners in a similar
situation should consider these few options:

1) Fix the noise problem at the source

2) Move the DSL device away from noise

2) Simply switch to an inferior profile

4) Tweak using 'DMT' + FW v6.1.0.5-AA

:p

Finally, trouble-shooting being essential for
people experiencing hard-to-solve issues such
as this one, i wish to point at a useful link:

Use DMT Tool to log your Line Stats

This fine article describes how to unleash the
professional-grade trouble-shooting power
which happens to be hidden within 'DMT'...

Enjoy your reading!

:D

VelCom - DSL Reports Test Results (2008-Sep-23)
VelCom - Bell's portal (ST546, 2008-Sep-18 20h33)
VelCom - Latency & Speed (FW v6.1.0.5-AA, #C0h)
VelCom - Bell's portal (ST546, 2008-Sep-18 21h54)
VelCom - Latency & Speed (FW v6.1.0.5-AA, #C8h)
VelCom - Bell's portal (ST546, 2008-Sep-18 23h45)
VelCom - Latency & Speed (FW v6.1.0.5-AA, #40h)

]]> http://www.dslreports.com/forum/remark,21178986 Sat, 27 Sep 2008 17:33:49 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21177328 Bicephale : What else to do on a rainy week-end?...

Well, here are three easy to compare blocs
of concatenated statistics, the tests were
conducted on September 16 during one of
many crisis periods where noise was severe
enough to totally disrupt my DSL connection
unless i used some tweak trick. This noise
issue was finally solved when i understood
the true nature of the noise source, after
two months of trouble-shooting: i live on
the 2nd floor and i had installed the MoDem
on the kitchen countertop, most likely just
a few feet right above a dimmer-controlled
lamp in my neighbour's kitchen, downstairs.

I figure this light bulb was turned on when
dawn arrived (apparently once a TV program
started) and it usually went off before 0 h
but not always. With this in mind, i moved
my DSL unit to a higher location which is a
few feet away from the previous point and
this reduced noise to a manageable level...

:D

In any case, my three samples are far from
sufficient to draw definitive conclusions
but they point at some interesting problem:
what influence does noise have over final
"browser" speed? Hummm... My middle tweak
was the worst in terms of CRC Errors and it
only displayed a marginal advantage over my
lowest JAVA speed test so i'd say this must
confirm there are two elements to trade-off
(read optimize). A higher connection rate
may compensate for noise up to a point, it
must be a bell-shaped relation and i wonder
which tweak corresponds to the sweet-spot.

Lets not forget that noise may vary through
time. Perhaps dimmed-lamp originated noise
is roughly constant but not necessarily the
other sources... The dimmer noise probably
raised the noise floor every single evening
and yet this middle sample may have simply
happened to record a noise burst of different
origin. In short, multiple samples should be
used to null-out marginal events, ideally...

Plenty of fun to have on rainy evenings!

:p

VelCom - Hybrid Stats (FW v6.1.0.5-AA, #D8h)
VelCom - Hybrid Stats (FW v6.1.0.5-AA, #C8h)
VelCom - Hybrid Stats (FW v6.1.0.5-AA, #B8h)

]]> http://www.dslreports.com/forum/remark,21177328 Sat, 27 Sep 2008 09:58:08 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21158494 Bicephale : Displacing the MoDem made a significant difference in this case, shall i say!

:o

More details available here:

»/testhistory/1267354/b1adc

VelCom - Thomson ST546v6 (RSL v3.6, 2008-Sep-23)
VelCom - ST546v6 (DMT & OpenOffice Calc, 2008-Sep-23)
VelCom - Test Results (Thomson ST546v6 FW v6.1.0.5-AA)
VelCom - Bell's portal (ST546, 2008-Sep-23 20h59)

]]> http://www.dslreports.com/forum/remark,21158494 Tue, 23 Sep 2008 22:57:11 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21155017 Bicephale : More additions...

These two graphics should provide a more complete
perspective about some variations i observed during
the normal vs tweaked periods. For example, there's
been a lot of noise past midnight on September 2 (a
previous post) and 3 when compared to September
5; as for the tweaks, maybe that's pure coincidence
but i've recorded an average error rate of 67756 CRC
Errors/Day for the later tweak while i had 308324 (a
variation which is over 400 %) three days before! It
could result from the connection speed - or possibly
different Bits/Bin settings. I'm forced to wonder!...

In any case, my impression is that this corresponds
to human activity and that some person's activities
happen to be strongly influenced by T.V. schedules!

:p

VelCom - GNet GBB2060-Xi (Major Failure, 2008-Sep-3)
VelCom - GNet GBB2060-Xi (Rescue Tweak, 2008-Sep-5)

]]> http://www.dslreports.com/forum/remark,21155017 Tue, 23 Sep 2008 12:22:48 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21144484 Bicephale : This one sorts of validates my post of September 20th,
especially the tweak part...

Addendum

Information added: Tweak Settings & Error Rate

VelCom - GNet GBB2060-Xi (DMT Tweak, 2008-Sep-2)

]]> http://www.dslreports.com/forum/remark,21144484 Sun, 21 Sep 2008 08:19:45 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21144252 Bicephale : Oups!

I almost forgot the version for people with a hearing disability!

:o

VelCom - Beast Away! @ 23 h (Voice Print, 2008-Sep-20)

]]> http://www.dslreports.com/forum/remark,21144252 Sun, 21 Sep 2008 03:25:58 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21144228 Bicephale : Hi,

Here's a story, it's about "The Beast"!

Once uppon a time a beast lived in the
neighbourhood of a town called DSL and
every single evening after 18 h or so
the beast turned DSL into a ghost town.

:huh:

Its population just didn't know what to
do until some day it became clear that
the beast had very regular habits... In
fact, the population knew the beast was
on its way even before it got there: a
simple A.M. radio tuned to 610 KHz let
anyone hear the loud barks of the beast
which were so strong they travelled up
thru the airwaves! No one knew where
the beast came from exactly but maybe
some major step had been made towards
a solution: the beast might be chased
and found using only a radio receiver...

:D

My little story isn't finished yet: this is
work on progress so i won't be able to
bring it to its conclusion - well, at least
not yet. In the meantime, i've joined a
picture of the beast with a sample of its
frightening voice!

:p

VelCom - The Beast Going Away at 23 h (2008-Sep-20)
VelCom - The···20) .MP3 28,488 bytes VelCom - The Beast Going Away at 23 h (2008-Sep-20)

]]> http://www.dslreports.com/forum/remark,21144228 Sun, 21 Sep 2008 03:06:29 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21141807 Bicephale : Hi everyone,

Time for an update... Admire the face of the beast!

Obviously, there's been serious degradation lately:

From the ground up!, Bicephale, 2008-Aug-6

Hopefully, i'll probably manage to post a capture of
its voice in the next few days or so. Stay tuned!...

VelCom - GNet GBB2060-Xi Rescue Tweak (2008-Sep-1)

]]> http://www.dslreports.com/forum/remark,21141807 Sat, 20 Sep 2008 13:54:51 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21032103 Bicephale : Here's my very 1st post of an ST tweak which works for me!

:D

VelCom - Thomson ST546v6 Rescue Tweak (2008-Jul-29 21h)
VelCom - Bell's portal (ST546v6, 2008-Jul-29 21h05)
VelCom - Thomson ST546v6 Static Numbers (2008-Jul-29 21h)

]]> http://www.dslreports.com/forum/remark,21032103 Sat, 30 Aug 2008 14:37:16 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21028225 Bicephale : Phone line quality is degrading indeed in terms of static numbers:

7920 CRC Errors/day (averaged) and rising...

VelCom - Bell's portal (Siemens SS4200, 2008-Aug-29 18h09)

]]> http://www.dslreports.com/forum/remark,21028225 Fri, 29 Aug 2008 18:39:45 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21027451 Bicephale : Using my Siemens SpeedStream 4200 i observed a CRC Error
Rate of 4095 per day at 15 h this afternoon comparatively
to over 4840 an hour later. Perhaps the phone-line quality is
starting to degrade earlier than what i suspected previously.

VelCom - Bell's portal (Siemens SS4200, 2008-Aug-29 15h06)

]]> http://www.dslreports.com/forum/remark,21027451 Fri, 29 Aug 2008 16:05:49 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21023281 Bicephale : No graphics for today, lets just mention that my ST516
loaded with FirmWare v6.2.29.2-GE is unable to provide
a connection around 21 h each day while my ST546 with
FirmWare v6.1.4.6 (UK) works reasonably well for tasks
such as browsing and even listening to pseudo-streamed
radio (Pandora)... All of this being made accessible and
easy for anyone to try, thanks to 'DMT v7.35'! In my own
case, MoDemOption register 0 is set to #A8h, this lowers
the speed to 3072/800 Kbps FastPath and the transfers
are reduced but i still obtain a connection, at least!...]]> http://www.dslreports.com/forum/remark,21023281 Thu, 28 Aug 2008 21:35:59 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21010647 Bicephale : Playing with MoDemOptions late at night...

:p

N.B.:

The 'STMT' curves are not available when using FirmWare 6.1.4.6!

ST546v6 FW v···ion .ZIP 205,520 bytes
'ST546v6 FW v6.1.4.6 (UK) Gif Animation .ZIP'

]]> http://www.dslreports.com/forum/remark,21010647 Tue, 26 Aug 2008 17:07:08 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21002197 Bicephale : Euh...

By "PPP event" i mean major disruption...

;)]]> http://www.dslreports.com/forum/remark,21002197 Mon, 25 Aug 2008 03:21:08 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21002183 Bicephale : Connection successful using Spectral Shaping on an old GNet BB0060B...

System Log:

19:50:55 EST Sun Aug 24 2008STATUS ALARM : PPP Interface Up : Interface - ppp-1   19:50:55 EST Sun Aug 24 2008STATUS ALARM : IPCP Successful : Interface - ppp-1, Local IP Address - 10.8.xxx.xxx, Gateway IP Address - 10.8.xxx.xxx  19:50:53 EST Sun Aug 24 2008STATUS ALARM : PPP Interface Up : Interface - ppp-0   19:50:53 EST Sun Aug 24 2008STATUS ALARM : IPCP Successful : Interface - ppp-0, Local IP Address - 98.124.xxx.xxx, Gateway IP Address - 64.213.xxx.xxx   19:50:53 EST Sun Aug 24 2008STATUS ALARM: PPP Authorization Successful : Interface - ppp-0 19:50:52 EST Sun Aug 24 2008STATUS ALARM: PPP Authorization Successful : Interface - ppp-1 19:50:52 EST Sun Aug 24 2008STATUS ALARM : PPPoE Up : Interface - ppp-1   19:50:52 EST Sun Aug 24 2008STATUS ALARM : PPPoE Up : Interface - ppp-0   19:50:42 EST Sun Aug 24 2008ADET: Auto Detection Failed19:50:41 EST Sun Aug 24 2008ADET: User created VC with VPI/VCI 0/35, no detection on this VC   19:50:41 EST Sun Aug 24 2008ADET: Reading VPI/VCI entries from autocfg.txt 19:50:39 EST Sun Aug 24 2008ADET: Verification failed, starting detection again19:50:39 EST Sun Aug 24 2008ADET: Last detected VPI/VCI 0/35 protocol  LLC MUX 19:50:39 EST Sun Aug 24 2008ADET: Auto Detection Started on boot-up in bridge-router mode

Alarm:

Not one single PPP event for the duration of that connection,
browsing almost seemed to be normal but for complex pages.

Try this on other brands/models (if that's supported at all)!...

VelCom - GNet BB0060B (2008-Aug-24 past 19h50)
VelCom - Bell's portal (GNet BB0060B, 2008-Aug-24 23h10)

]]> http://www.dslreports.com/forum/remark,21002183 Mon, 25 Aug 2008 03:12:11 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,21000362 Bicephale : What was it like before something got screwed-up?

Here are captures which i didn't retain for publication
(due to frequent rain/storms events, i guess). There
were no noticeable disruptions back then, as i recall.

Apparently, a major change occured between August
2nd and August 5 and i have no idea what caused it.

VelCom - ST546v6 (2008-Jul-31 22 h)
VelCom - ST546v6 (2008-Aug-1st 11 h)
VelCom - GNet BB0060B (2008-Aug-2 9h01)

]]> http://www.dslreports.com/forum/remark,21000362 Sun, 24 Aug 2008 18:22:20 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20999496 Bicephale : Lets try a 24 h sample...

This set of captures was taken during a moist day
(with the RH index beyond 65 %), that's radically
different from the previous two which felt quite
comfortable (and really dry at last!)... The noise
bursts which occured a couple minutes before 20 h
affected scale magnitudes so much i had to include
alternate curves with moderate scales again: the
details showing a possible "Cooking Hour Syndrome"
would just have disapeared behind the floor level,
otherwise. The evening curves are suggesting that
my connection was severely disrupted in that time
period - which is now customary but wasn't at all
the case, initially, when i got my profile switched
to 5056/800 Kbps FastPath (as a consequence of
past observations). It's not likely i can do anything
about it and i wouldn't bet on the phone company
neither unless the cause which triggered this radical
change is identified someday. I'm considering having
the profile modified to allow me to finish my project,
then the only reasonable option would be cable...

:uhh:

VelCom - ST516v6-2 (2008-Aug-23)

]]> http://www.dslreports.com/forum/remark,20999496 Sun, 24 Aug 2008 14:26:58 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20995712 Bicephale : Hummm...

Interesting: i recorded jumpy SNR Margin curves
when i lived in the country-side and had a 6016/
800 Kbps FastPath profile. There was more noise
on the evenings too but nothing severe enough to
cause major disruptions. My present location is
about 170 Kilo-meters away from the previous one
and yet i find the similitudes puzzling, not to
mention that now i reside in a city with at least
ten times the population compared to Louiseville.

Here are SNRM transitions from my old rural area:

Tweaks, Bicephale, 2008-Jul-18

Tweaks, Bicephale, 2008-Jul-18

This sample shows a raise of noise in the evening:

Tweaks, Bicephale, 2008-Jul-18]]> http://www.dslreports.com/forum/remark,20995712 Sat, 23 Aug 2008 14:57:25 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20994087 Bicephale : Today's samples: like flipping a switch (red arrow) again!

VelCom - ST516v6-2 (2008-Aug-22 17 h)
VelCom - ST516v6-2 (2008-Aug-22 19 h)
VelCom - ST516v6-2 (2008-Aug-22 21 h)
VelCom - ST516v6-2 (2008-Aug-22 23 h)

]]> http://www.dslreports.com/forum/remark,20994087 Sat, 23 Aug 2008 02:11:22 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20991421 Bicephale : About the SNR Margin...

This set of curves demonstrates how misleading it
might be to trust the SNRM curve alone - imagine if
using "static" numbers only!... I don't recall what's
the exact timing but i sure remember that i turned
on the 3 fans (Intec's XBox 360 'Air Cooler', item#
G8648C) late after midnight. That's a "green" device
(environmentally friendly) using a small switching-
mode power supply and it was found at Zellers, it's
installed right below my MoDem (or in front of it for
the old GNet) since i arrived here in Quebec city. I
suspect there's noise comming from the fans, their
PSU or both so it's something i must investigate!...

:o

But right now, my point is this: the SNR Margin data
which was captured at 20 h simply didn't allow me to
foresee what would happen in the next few minutes:
SNRM was 5 dB for the most part of the day and it
was even lower during the period between midnight
and 5h30, actually. Yet, a major disruption occured
after 20 h which even twenty hours worth of curves
couldn't help to predict, nonetheless! Put shortly, a
24 h set of curves is nice to have but it's even nicer
to collect many of those so that a pattern emerges.

;)

Back to the SNR Margins, we'd find it most impractical
to watch the numbers every fifteen minutes so that's
why i prefer 'STMT' over 'DMT' if using a SpeedTouch:
the curves are much more informative than a pair of
numbers which may be great for a SpeedStream 4200
while the very same figures appear to be dangerously
marginal (at best!) for a typical SpeedTouch 5x6v6...

:p

By the way, looking at SNR Margins one can't tell when
i turned off my fans but it seems the CRC curve helps.

So, i invite the readers to draw their own conclusions!

:D

VelCom - Siemens SS4200 (2008-Aug-20 20h)

]]> http://www.dslreports.com/forum/remark,20991421 Fri, 22 Aug 2008 15:49:44 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20969733 Bicephale : Additionally,

This is to confirm with numbers that the 1st two hours (and a half) were noisier...

That's also a reminder: it's OKay to click the [Modem Statistic] button (top left)!

;)

VelCom - ST546v6 Static Numbers (2008-Aug-17)

]]> http://www.dslreports.com/forum/remark,20969733 Mon, 18 Aug 2008 16:06:28 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20969513 Bicephale : Same time-frame, another day...

I used a different MoDem with a variant of the
FirmWare installed on my newer ST516. Sunday
has been dry (which was a rare event lately) so
maybe it may explain the lower peek magnitudes.

Hummm... I guess i should keep track of the RH
factor too! Humidity would hardly account for
the steep noise burst transitions, nonetheless.

:p

Today's 1st sample shows that it was taken only
23 minutes after rebooting the DSL unit and the
2nd one is a reminder that it's not possible to
refresh 'STMT' until the testing is complete (yet
is IS possible to generate multiple captures)...

If i had refreshed 'STMT' before creating those
captures then the "DSL-Link Utime" fields would
read as "2:23:36" and "4:24:17", respectively.

This ambiguity is avoided by taking screenshots
before the test cycle is over since the [Refresh
Data] button happens to be greyed-out then.

VelCom - Thomson ST546v6 (2008-Aug-17 19h)
VelCom - Thomson ST546v6 (2008-Aug-17 21h)

]]> http://www.dslreports.com/forum/remark,20969513 Mon, 18 Aug 2008 15:30:46 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20962887 Bicephale : Well,

I thought that the 1st set of samples was bad
news enough but i find the 2nd one devastating.

Take note that the vetical scale numbers must
be multiplied by ten. Also, the 2nd capture has
two scale versions included in order to make the
transitions more obvious: it's just like flipping a
switch, actually!... In my opinion, this is noise
of industrial origin and Bell would never manage
to clean my phone line even if they wanted to!

I really doubt my little tricks will work this time.

:huh:

VelCom - Thomson ST516v6-2 (2008-Aug-16 19h)
VelCom - Thomson ST516v6-2 (2008-Aug-16 21h)

]]> http://www.dslreports.com/forum/remark,20962887 Sun, 17 Aug 2008 02:29:50 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20946600 Bicephale : Time for an update...

Here is an approximation of the phone line's spectral response
while it's still not completely optimized... Areas where colours
are fully saturated represent high probability levels. Take note
that my samples were taken at random intervals between July
31, August 1st, August 2, August 11, August 12 and August
13 via either a Thomson SpeedTouch 546v6 (FW v7.4.3.2-AA)
or my newer Thomson SpeedTouch 516v6 (FW v6.2.29.2-GE).

]]> http://www.dslreports.com/forum/remark,20946600 Wed, 13 Aug 2008 18:58:47 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20907749 Bicephale : The wiring still isn't fully optimized (nothing has
changed). The tweak was to raise SNR Margins
but i'm not sure it helped my error rate (noise).

At least it was a full day without rain/lightnings!

:uhh:

Addendum:

Speed Tests

VelCom - GNet BB0060B (Tweak, 2008-Aug-5)
VelCom - Bell's portal (GNet BB0060B, 2008-Aug-5 16h26)
VelCom - Test Results (GNet BB0060B, Twin PPP & Tweak)

]]> http://www.dslreports.com/forum/remark,20907749 Wed, 06 Aug 2008 11:32:50 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20896829 Bicephale : Not much to post today: marginal contaminating events
such as rain and lightnings have become the norm here!

Perhaps i'll be able to publish one 24 h curve tomorrow...

VelCom - GNet GBB2060-Xi (Tweak, 2008-Aug-3 11h53)

]]> http://www.dslreports.com/forum/remark,20896829 Mon, 04 Aug 2008 10:50:54 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20881694 Bicephale : Well, after an intervention from DeadPool, i'm releaved
to observe that everything seems to be OKay by now!

Settle time for this capture was only about two hours,
(it's just for preliminaries), i'll post more details later...

VelCom - ST546v6 FW v7.4.4.7-iA (2008-Jul-31 23h26)

]]> http://www.dslreports.com/forum/remark,20881694 Fri, 01 Aug 2008 01:42:59 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20877704 Bicephale : Lets now experiment a bit!

This 'DMT' capture was taken after the MoDem
settled for one hour, notice the discrepancy in
terms of UpStream Attenuation (caused by my
tweaking, most likely)... This sort of Spectral
Shaping implementation appears to allow a gain
of one (maybe two) dB on the DownStream SNR
Margin side and this tends to confirm an issue
with some UpStream bottleneck, IMHO... Can a
power transformer at the top of Hydro's pole
cause such a problem? I'm afraid it just might.

VelCom - DMT Tweak (2008-Jul-31 11h00)
VelCom - Bell's Portal (GNet GBB2060-Xi, 2008-Jul-31 11h07)

]]> http://www.dslreports.com/forum/remark,20877704 Thu, 31 Jul 2008 12:25:34 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20876871 Bicephale : For the purpose of making comparisons:

Tweaks, Bicephale, 2007-Nov-30

Tweaks, Bicephale, 2008-Mar-6

Tweaks, Bicephale, 2008-Jul-7

In my present situation the DownStream RCO number
appears to be too high and the rate of "Far CRC" errors
(presently in Interleaved mode) tells me there could be
something wrong. In any case, my previous phone line
generated millions of "Near FEC" errors before and yet
both my GNet MoDems easily handled it so that's why i
think this profile setting is exageratly "conservative"...

Unfortunately, the only way to find out for sure may be
to evaluate multiple profiles until satisfaction is reached.]]> http://www.dslreports.com/forum/remark,20876871 Thu, 31 Jul 2008 09:38:14 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20876030 Bicephale : The RCO's are from Bell's Line-Test portal and were captured at 18h45.

VelCom - DMT (GNet GBB2060-Xi, 2008-Jul-30)

]]> http://www.dslreports.com/forum/remark,20876030 Thu, 31 Jul 2008 02:20:46 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20864686 Bicephale : I guess i can make two preliminary observations at this point:

1) My electrical distance is about 3.9 Kilo-meters 2) The best CRC Error immunity is probably achieved at the expense of Relative Capacity Occupancy...

Addendum:

...and maybe even one more...

3) I may be ready to call my ISP for a profile raise!

]]> http://www.dslreports.com/forum/remark,20864686 Tue, 29 Jul 2008 06:10:47 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20864045 Bicephale : Today we had more rain but i decided to put
one of my Thomson SpeedTouch 516v6 on-line
anyway, it's the version which i believe to
sell with a switching-mode power supply and
a newer FirmWare (v6.2.29.2 vs v6.2.16.3).

There are two Bell Line-Test portal captures
included, one is only thirty minutes old and
the numbers added to the "ADSL-Info" section
(in light grey) reflect an 'STMT' capture i
made right after booting the MoDem. We can
see there's little variation compared to the
2nd set of records which is three hours old.

Also joined to this post you'll find one 6 h
old record to account for more variations...

Addendum:

Plus speed tests...

VelCom - ST516v6-2 (2008-Jul-28, 20h00)
VelCom - Thomson ST516v6-2 (2008-Jul-28 00h36)
VelCom - Thomson ST516v6-2 (2008-Jul-28 20h06)
6 h 'DMT' Capture - Left Part
6 h 'DMT' Capture - Right Part
VelCom - Test Results (ST516v6-2, FW v6.2.29.2-GE)

]]> http://www.dslreports.com/forum/remark,20864045 Mon, 28 Jul 2008 23:59:07 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20855638 Bicephale : Hi everyone,

Now some Siemens SpeedStream 4200 stuff, at last!

:p

Mother nature has been less than cooperative lately
so this reconstructed 'DMT' capture shows numbers
which only cover the first seventeen hours, e.g. until
what started as a nice sunny day gave way to high
humidity, dark clouds, rain and the risk of lightnings.

All curves past 5 h PM aren't being accounted for by
the numbers but they are included anyway. The RCOs
were obtained at 15 h instead of 17 h, this parameter
does vary throughout the day but it still seems OKay.

Addendum:

Speed Tests...

Other details here: »/testhistory/1267354/b1adc

VelCom - Siemens 4200 (2008-Jul-26, RCOs @ 15 h)
VelCom - Bell's Portal (Siemens 4200, 2008-Jul-26 15h09)
VelCom - Test Results (Siemens SS4200, 2008-Jul-27)

]]> http://www.dslreports.com/forum/remark,20855638 Sun, 27 Jul 2008 07:36:09 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20832727 Bicephale : Am i the only guy around to think this FirmWare was made 'DMT'-hostile!

Well, lets post whatever i was able to catch: a fraction of half a two hours record...

UpStream SNR Margin & RCO seemed improved using this MoDem/FirmWare, though.

ST5x6v6/FW v7.4.3.2: Random Resets launching 'DMT v7.35'
'STMT' right before my old SpeedTouch was rebooted by launching 'DMT'...

]]> http://www.dslreports.com/forum/remark,20832727 Tue, 22 Jul 2008 18:27:56 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20829252 Bicephale : This post is to account for my Thomson SpeedTouch 546v6 (with
FirmWare v7.4.3.2) and there's also a map, for future reference...

Addendum:

Plus some speed tests.

VelCom - DMT Part-1 (2008-Jul-21)
VelCom - DMT Part-2 (2008-Jul-21)
VelCom - Bell's Portal (Thomson ST546v6, 2008-Jul-22 0h07)
Distance between VelCom and my location
VelCom - Test Results (ST546v6/FW v7.4.3.2, 2008-Jul-22)

]]> http://www.dslreports.com/forum/remark,20829252 Tue, 22 Jul 2008 02:12:07 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20827494 Bicephale : Time for an update...

I decided to replace the D-Link HPNA modules with plain
old CAT-5 NetWork cabling for a while, it blows off the
esthetics but the whole appartment is a mess anyway...

The connection to my demarcation point isn't optimized
neither: i presently use thirty feet of twisted pairs and
then i split the signal between voice and DSL with a pair
of filters (i put no RF chokes on those). Light RF choking
is implemented on the WAN input, contrary to PSU leads
which are submitted to a generous amount of it.

There's been no cooking done here yet so it's no surprize
for me not to see any sign of a "cooking hour syndrome"
so far.

I forgot to mention that the static numbers are quite a bit stable...

Attenuation: 46.5 dB/26 dB
SNR Margins: 17 to 18.5 dB/10 dB
Power Levels: 18 dBm/11.9 dBm

VelCom - GNet GBB2060-Xi Noise Curve (Limoilou)
VelCom - Bell's Portal (GNet GBB2060-Xi, 2008-Jul-21 12h09)

]]> http://www.dslreports.com/forum/remark,20827494 Mon, 21 Jul 2008 19:51:13 EDT Re: From the ground up! http://www.dslreports.com/forum/remark,20802336 Bicephale : Hi everybody,

The transition is over: i'm now residing in Limoilou.

Consequently, i'll post my last Louiseville figures in
the next day or so (i didn't have time to sort it out),
in the appropriate old thread, of course...

N.B.:

All connections presently done via HPNA due to wiring constraints...

VelCom - Bell's Portal (GNet GBB2060-Xi, 2008-Jul-16)
Moved to Limoilou (Quebec City) - Speed Test Results
Moved to Limoilou (Quebec City) - More Details

]]> http://www.dslreports.com/forum/remark,20802336 Wed, 16 Jul 2008 19:12:58 EDT From the ground up! http://www.dslreports.com/forum/remark,20764263 Bicephale : Hi everyone,

I'll cease updating my "Tweaks" thread next week
after moving to Quebec city (Limoilou), the phone
line conditions will change and this means that
future MoDem comparisons will need to be based on
new grounds as a consequence. Further confusion
can be avoided, hopefully, by launching a separate
thread where my future findings can be posted so
here it is: those are my very 1st static numbers
and they're so fresh i can't actually join speed/
latency tests because PPoE authentification works
but there's no real connectivity yet... Perhaps
i must explain... Well, VelCom was very kind to
me as they agreed to activate the DSLAM a few days
before i'm finished moving to my new appartment!

In other words, the DSLAM card is ready and VelCom
is able to access Bell's Line-Test portal for that
phone line but my DSL access still isn't providing
browsing capability - and that's totally normal or
i'd have to pay for two DSL accounts, obviously...

;)

Honestly, i value this level of cooperation shown
by the VelCom guys as their solution garantees my
access is ready (and maybe even optimized) by the
time i'm done moving (e.g. no delays whatsoever)!

:D

Warm salutations to Matthew and his co-workers!!!

:)

VelCom - Thomson ST546v6, FW v7.4.3.2 (Limoilou, 2008-Jul-8)
VelCom - GNet GBB2060-Xi (Limoilou, 2008-Jul-8)

]]> http://www.dslreports.com/forum/remark,20764263 Wed, 09 Jul 2008 12:52:39 EDT