Bicephale
join:2005-09-24
 ·TekSavvy Solutions..
| reply to BobTheVeg
Re: Need help/tips about DSL connection speed
Hi again,
Maybe this is going to be somewhat more useful to you:
%20.GIF)
'Thomson SpeedTouch 24 h Template .ZIP'
This is just simple HTTP code meant to display statistics
which i once was planning to collect using 'Super Macro'. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
2 edits | reply to BobTheVeg
«To boldly go where no man has gone before» |
Two things:
1) You've finally earned the above...
2) Both MoDems face the IKNS Syndrome.
I'd like to see how tweaks work on the OvisLink but
your phone line does look like it will support 5056
Kbps on the DownStream side, after all. Both units
display very similar power levels and SNR Margins
and i no longer believe you can affect the UpStream
SNR Margin (my advise is to ignore this parameter). |
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BobTheVeg
join:2004-09-05
Montreal, QC
| reply to Bicephale
 OvisLink OV3···.au3.zip 1,415 bytes
Autoit script for sampling the Ovislink | | | 
800kbps Upload ! | 
5056/768 ( 32k upload above ) | 
Still + 2 SNRM above |
I tried my old Gnet to have an idea of how bad it would be and I got surprised of the result.
I have been able to achieve a better sync with the Gnet than the Ovislink. The SNRM value is as low as I expected, only -2.
I am spending more time on ideas for the most simple and efficient way to re-wire the house:
- I was thinking about puting a NID box into the demarcation box and use the outer pair of the single wire. I would use the outer pair for the DSL and inner pair for the normal phone with no need of any filter in the house because it is filtered at the source. I also can choose which wires in the house use which pairs.
- Next thing is to place the DSL modem the closest I can. And to link to my network I could use the TV cable with 2 old combo rj45/coax network card. coax is about 10M/bits max but I guess I could get wireless connection later.
I was also curious to know when in the day my SNRM gets the most affected. I wanted the same kind of picture DMT offers. So I made a script in autoit.
From what I can see so far, there is some kind of trigger which my connection from 11.5-12.9 to 14.1-16.5 and vis versa. I have been mainly looking for when this exactly happen to figure out what it is. |
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Bicephale
join:2005-09-24 | reply to BobTheVeg
Hi, long time no see...
Somehow i was hoping you wouldn't give up
like most of the other GNet owners before...
Any chance to see any captures to comparre? |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| reply to BobTheVeg
Hi,
I can't comment much at this stage other than to point
out your DownStream/Local Attenuation is rock steady
at 35 dB and so is your UpStream/Remote SNR Margin as
it stays at 6 dB. When i line up the numbers it's not too
clear if the SNR Margin would be proportional to speed
as there are only three samples for your OvisLink device
and i find these rather inconclusive in this respect...
Instead of a linear relationship expect a bell-shaped curve
where extremes don't pay. The trick here is to find out
which limits are not extreme, in my opinion. Anyway...
What i do know is that if i were to try to beg for some
profile raise then i'd just refer my ISP representative(s)
to this ancient post of mine where i demontrated quite
clearly how i could force the MoDem to negociate for a
stable set of DownStream/UpStream speeds between
5056-1440/800-256 Kbps (e.g. until access feels solid):
»GNet Tweaking
In other words, that i can manage it all by myself once
i've obtained reasonable upper limits to work with... |
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BobTheVeg
join:2004-09-05
Montreal, QC
| reply to Bicephale
After Synchronization |
|
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Bicephale
join:2005-09-24 | reply to BobTheVeg
Maybe you need to count two days for AEI and two more for Bell...
 |
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BobTheVeg
join:2004-09-05
Montreal, QC | reply to Bicephale
I am still not re-synchronized. I was told that it takes 2 days last Friday and it is now Monday. I even asked them to confirm that the 2 days included the week-end. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
1 edit | reply to BobTheVeg
I started at 3008/800 FastPath as well, i didn't expect
the following years to be made of so much reading and
trouble-shooting, whatever... We just need to wait for
your next posts, starting from there it may be possible
to make resonable suggestions. Fingers crossed!
 |
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BobTheVeg
join:2004-09-05
Montreal, QC
1 edit | reply to Bicephale
said by Bicephale  :I don't forget that you were on a 3488/768 Kbps Interleaved profile before this thread started. I remember being on a 3008/800 Fast when I first joined aei and stayed on the profile for a long time. I never looked back at those value ( because I use a router ) until I had problem with the connection. And I believe it is a recent change as the line quality test ping has increased by 30ms because of the interleave. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| reply to BobTheVeg
Hi,
I would have liked it much better if you could
have identified a faulty wiring section. Well, with
centralized filtering implemented right at the
demarcation point, there's nothing more to be
done unless you have many power lines around.
Additionally, i'm having a second thought about
using some refurbished A.M. ferrite rod: it were
used as an antenna and certainly doesn't behave
like a toroidal core at all... Maybe it can work as
a "loading coil", i wonder, but i wouldn't bet too
much on it. I guess it will be necessary to wait
until you get something new to report on monday!
I don't forget that you were on a 3488/768 Kbps
Interleaved profile before this thread started.
If you have time, a few OvisLink captures would
be great, though! You know, the tweaker type...
 |
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BobTheVeg
join:2004-09-05
Montreal, QC
| reply to Bicephale
said by Bicephale :Is this a house where there could be hidden taps inside the wall? The house is not old enough for that. |
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Bicephale
join:2005-09-24 | reply to BobTheVeg
Is this a house where there could be hidden taps inside the wall? |
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Bicephale
join:2005-09-24 | reply to BobTheVeg
Euh... Your old untweaked MoDem, that is. |
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Bicephale
join:2005-09-24 | reply to BobTheVeg
Oups! I wasn't sure about the call to AEI... |
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BobTheVeg
join:2004-09-05
Montreal, QC
| reply to nanook
said by nanook :Call aei on Monday, ask them to look at your line stats again and ask them to get Bell to increase your profile. I called them Friday and still waiting. I received the 2496/640 profile because it is what my old modem could handle without getting disconnected.
I managed to decrease the Output Power (dBm) by 0.1 for both up/down stream. I am almost connected at the demarcation box now. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
3 edits | reply to BobTheVeg
Hi again,
Nanook has a very good point here: call AEI to get
your profile upgrade if you haven't done so! I must
confess i'm not the best teacher around, it's easy
for me to overlook the fact that maybe you didn't
because that's the very 1st thing i'd do, naturally:
you can only use Spectral Shaping to optimize a few
parameters within the limits previously negociated
between your DSL unit and its peer DSLAM (e.g., you
cannot set the speed higher than what the profile is
set to and in your case it's 2496/640 Interleaved).
5056/800 Kbps FastPath would be nice for starters,
Spectral Shaping should allow you to find optimized
UpStream/DownStream speeds to suggest to AEI later.
Being on FastPath instead of Interleaved mode should
let you decide if the noise level is too high for you;
there again, Spectral Shaping will probably make it
possible for you to find a stable trade-off between
speeds and RCOs/CRC Error rates, etc. |
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Bicephale
join:2005-09-24 | reply to nanook
Of course it can go faster, this is why i find it so puzzling:
i've got worst atenutation than he actually does, after all... |
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nanook
Premium,MVM
join:2007-12-02
·Bell Sympatico
·TekSavvy Solutions..
| reply to Bicephale
said by Bicephale :According to this, i'd say he's on a 2496/640 Kbps Interleaved maintenance profile You are right.
In my haste to reply I forgot that the 2496 reported by the modem is not his actual speed but rather the profile setting.
In any case, his line can go a lot faster. |
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Bicephale
join:2005-09-24 | reply to nanook
Hi Nanook,
According to this, i'd say he's on a 2496/640 Kbps
Interleaved maintenance profile but i can be wrong... |
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