Re: Need help/tips about DSL connection speed in Canadian Broadband

Re: Need help/tips about DSL connection speed in Canadian Broadband http://www.dslreports.com/forum/r20536945 en Wed, 02 Dec 2009 07:16:53 EDT Wed, 02 Dec 2009 07:16:53 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20666559 Bicephale : Hi again,

Maybe this is going to be somewhat more useful to you:

'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'.]]> http://www.dslreports.com/forum/remark,20666559 Thu, 19 Jun 2008 10:01:33 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20664997 Bicephale : Hi,

Two things:

1) You've finally earned the above...

2) Both MoDems face the IKNS Syndrome.

:p

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).

«To boldly go where no man has gone before»

]]> http://www.dslreports.com/forum/remark,20664997 Wed, 18 Jun 2008 22:42:02 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20664421 BobTheVeg : What would I do without you...

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.

OvisLink OV3···.au3.zip 1,415 bytes Autoit script for sampling the Ovislink
800kbps Upload !
5056/768 ( 32k upload above )
Still + 2 SNRM above

]]> http://www.dslreports.com/forum/remark,20664421 Wed, 18 Jun 2008 21:01:59 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20661614 Bicephale : 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?]]> http://www.dslreports.com/forum/remark,20661614 Wed, 18 Jun 2008 11:37:27 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20609989 Bicephale : 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...

:p

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...]]> http://www.dslreports.com/forum/remark,20609989 Sun, 08 Jun 2008 08:29:26 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20604345 BobTheVeg : I have been resynchronized 2 days ago. I have the feeling that the SNRM is inversely proportional to the Rate. I don't understand why they wouldn't give me Fast type nor 800 Kbps upstream. The SNRM change a lot over the day. I will need to make my own macro to record statistics out of the web interface. It seems that below ~13.4 I start getting Uncorrectable Errors.

After Synchronization

]]> http://www.dslreports.com/forum/remark,20604345 Fri, 06 Jun 2008 21:34:26 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20580996 Bicephale : Maybe you need to count two days for AEI and two more for Bell...

:uhh:]]> http://www.dslreports.com/forum/remark,20580996 Mon, 02 Jun 2008 22:44:46 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20580794 BobTheVeg : 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.]]> http://www.dslreports.com/forum/remark,20580794 Mon, 02 Jun 2008 22:12:36 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20575182 Bicephale : 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!

:)]]> http://www.dslreports.com/forum/remark,20575182 Sun, 01 Jun 2008 22:31:45 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20575143 BobTheVeg :

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. ]]> http://www.dslreports.com/forum/remark,20575143 Sun, 01 Jun 2008 22:25:15 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574856 Bicephale : 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.

:p

If you have time, a few OvisLink captures would
be great, though! You know, the tweaker type...

;)]]> http://www.dslreports.com/forum/remark,20574856 Sun, 01 Jun 2008 21:23:46 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574644 BobTheVeg :

said by Bicephale

:

Is this a house where there could be hidden taps inside the wall?

The house is not old enough for that.]]> http://www.dslreports.com/forum/remark,20574644 Sun, 01 Jun 2008 20:37:41 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574498 Bicephale : Is this a house where there could be hidden taps inside the wall?]]> http://www.dslreports.com/forum/remark,20574498 Sun, 01 Jun 2008 20:07:43 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574468 Bicephale : Euh... Your old untweaked MoDem, that is.]]> http://www.dslreports.com/forum/remark,20574468 Sun, 01 Jun 2008 20:02:04 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574455 Bicephale : Oups! I wasn't sure about the call to AEI...]]> http://www.dslreports.com/forum/remark,20574455 Sun, 01 Jun 2008 19:57:43 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574449 BobTheVeg :

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.]]> http://www.dslreports.com/forum/remark,20574449 Sun, 01 Jun 2008 19:56:44 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574448 Bicephale : 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.]]> http://www.dslreports.com/forum/remark,20574448 Sun, 01 Jun 2008 19:56:38 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574369 Bicephale : 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...]]> http://www.dslreports.com/forum/remark,20574369 Sun, 01 Jun 2008 19:40:13 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574357 nanook :

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.]]> http://www.dslreports.com/forum/remark,20574357 Sun, 01 Jun 2008 19:38:01 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574334 Bicephale : Hi Nanook,

According to this, i'd say he's on a 2496/640 Kbps
Interleaved maintenance profile but i can be wrong...]]> http://www.dslreports.com/forum/remark,20574334 Sun, 01 Jun 2008 19:33:16 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574317 Bicephale : Hi BobTheVeg,

No black wire is going anywhere in the thread you
refer to: the last time i saw one of those doing
something, i were twenty years younger and my aunt
was making me take a look at a 'Princess' phone.

While reading "A wire is a wire is a wire", you'd
notice a flat two-conductors cable, this cable is
unusually sturdy and comes directly from the pole
located on the other side of the street. No other
wire than this pair is provided by Bell, a third
one has their label on it but it just connects to
the house's ground, actually. One photograph is
showing how the black wire wraps around the ends:

As you can see, i have no use of the black wire,
this photograph also shows Bell's main on the left.

The tones ("bins" on a GNet unit) which i believe
to be of most interest are those around the middle
ends: below 31 for the UpStream upper edge and
above 32 for the DownStream lower edge. I advise
you to make tests with as much room between those
two edges as possible. Tones going from 0 to 5
are not used as this is the voice band and bin 31
is supposed to be reserved for a marker. You can
play with the rest but Bell still hasn't upgraded
your profile just yet and the most important item
you need to know right now is the RCO numbers if
you intend to measure your progress! In fact, be
prepared to ask AEI to read the RCOs from Bell's
Line Test portal a few more times because i don't
see how you're going to determine the sweet spot
otherwise: allow me to remind you that on this
piece of HardWare you've got no Spectral Response
curve, no 24 h CRC Error rate curves and no RCO
figures... SNR Margins can be helpful but i've
shown that this sort of data can be misleading...

Relatively to RFI control, speaker magnets ain't
suitable for this task, i'm afraid. If you have
a very old A.M. radio which you can detroy then
there's a ferrite rod inside. A rod is't quite
as efficient as a toroid core but it might give
you a hint as to wether or not it's worth trying
to find ferrite toroidal cores for future tests.

Beware, ferrite rods are made of compressed powder
so these little gremlins must be handled cautiously!

Spectral Shaping

]]> http://www.dslreports.com/forum/remark,20574317 Sun, 01 Jun 2008 19:30:53 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20574211 nanook :

said by BobTheVeg

:

I was wondering if having the 4 wires on the telephone cable is important for the DSL modem. I am 95% sure that my current installation only has 2.

You only need 2 wires (1 pair) for DSL. Most home phone wiring has 4 wires, 2 twisted pairs, in order to support 2 phone lines.

The "Attainable Rate (Kbps)" also increased above 7000 Kbps.

Based on the stats that I have highlighted it looks like Bell has put you on a 3Mb/s profile. Your SNR and Attenuation both look fine. They should support at least a 5Mb/s profile. The Attainable Rate of 7.5Mb/s also confirms this.

Call aei on Monday, ask them to look at your line stats again and ask them to get Bell to increase your profile.

]]> http://www.dslreports.com/forum/remark,20574211 Sun, 01 Jun 2008 19:08:33 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20573584 BobTheVeg : I got a question. I read your post »The customer's own wiring and I was wondering if having the 4 wires on the telephone cable is important for the DSL modem. I am 95% sure that my current installation only has 2.

I am still not re-synchronized but I took off some upstream tones (0 to 4 obviously used by the regular telephone) and I received an instant boost in the downstream SNRM (21 to 23). The "Attainable Rate (Kbps)" also increased above 7000 Kbps. This confirms your post of "Spectral Shaping".

I tried other tone removal at the edge or randomly inside but no meaningful difference. I currently have no way to see which tone has the best SNRM value.

I tested for fun the impact of placing my speaker on the wire of the phone line alone the wire of the speaker and saw an instant drop in the SNRM value ( drop of 0.6 db ). Removing the speaker re-increased the SNRM value back to what it was.

Knowing this, I started trying other phone location and I achieved the following result in the screen shot.

Edit: the software seems almost identical to BEETEL 220BX ADSL2+ MODEM »www.techenclave.com/guides-and-t···916.html

Best I've got so far

]]> http://www.dslreports.com/forum/remark,20573584 Sun, 01 Jun 2008 16:47:40 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20571256 Bicephale : Oh wow!

Spectral Shaping done like this is going to be a lot easier:

3Com USR-910x, D-Link DSL2320B, etc. - Tone-per-Tone GUI setup!

I'm dribbling with apprehension, i can't wait for your next post!

:o]]> http://www.dslreports.com/forum/remark,20571256 Sun, 01 Jun 2008 00:13:40 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20571178 BobTheVeg : I have not been re-synchronized yet. Of course I plan to compare this new modem against my old one. If I ain't getting any meaningful progress, this new modem ain't solving the real problem.

Toward my course of action, they kinda pushed me in a hurry to buy this modem in order to prevent sending someone to my home which would cost me 100+$ if the problem was the modem. To be honest, I don't mind paying for another modem after 5 years.

I also tried all version of DMT and none works with the OV303R2 :( . There is a several configuration page in the web interface which has similar features. Like choosing each bins 1 by 1 (255 check box).

The inner web page content is HIGHLY similar to : »www.support.dlink.com/emulators/···lcfg.htm
Only the skin is different.]]> http://www.dslreports.com/forum/remark,20571178 Sat, 31 May 2008 23:42:53 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20569922 Bicephale : Hummm...

Marvelous! So, you don't have to make trade-offs
between having INet connectivity and statistics.

:D

Just great. Now that i got the good news i'm only
more curious than i was before. Your course of
action has changed slightly since AEI decided to
provide a brand new DSL device for you to try. My
question is, how does it compare? Is it worth the
expen$e? ...and hence, can we see the figures?...]]> http://www.dslreports.com/forum/remark,20569922 Sat, 31 May 2008 17:21:25 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20569817 BobTheVeg : Yes exactly.

The networking gets confusing as the PPPoE dial can be on the same network as the LAN. In other word the modem, the router WAN&LAN and other PCs can all be on the same switch. and it allow you to get access to the internet via the router and still have access to the web interface of the modem.]]> http://www.dslreports.com/forum/remark,20569817 Sat, 31 May 2008 16:57:34 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20568828 Bicephale : Hi,

I don't use a router so it's not possible for me
to make a statement with certainty but a Windows
'Miniport WAN' session using my GNet BB0060B or
my GNet GBB2060-Xi appears to indicate that they
switch modes automatically just like my ST546v6.

You probably mean that your OvisLink OV303R2 has
it's management servers available no matter what
mode you put it into but i could be mistaking...

Would this make any sense? You tell me!]]> http://www.dslreports.com/forum/remark,20568828 Sat, 31 May 2008 12:51:37 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20568460 BobTheVeg : The OV303R2 can operate in both MoDem/Router and Bridge mode simultaniously.]]> http://www.dslreports.com/forum/remark,20568460 Sat, 31 May 2008 11:23:18 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20565809 Bicephale : Hi,

I insisted a few times that you should get the RCO
numbers and then proceed further but i can see that
those OvisLink OV303R2 statistics suggest you can
be put on a 5056/640 Kbps Interleaved profile right
away! I'd still like to know how both devices will
compare once you're upgraded, 'DMT v8.07' supports
the BroadCom based MoDems so let us know if this
'DMT' build works for you, in any case! Good luck,
i noticed your UpStream SNR Margin is still 6 dB...

;)]]> http://www.dslreports.com/forum/remark,20565809 Fri, 30 May 2008 19:25:57 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20565735 BobTheVeg : After reading alot about BB0060, aei.ca proposed me to try ( as long as I pay first and refund if it fail ) a new DSL.

The values are promising, I hope I'll reach a good profile with this.

New DSL OvisLink OV303R2

]]> http://www.dslreports.com/forum/remark,20565735 Fri, 30 May 2008 19:11:26 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20556062 Bicephale : Hummm...

More comments!

Your present operating rangess are:

DownStream/Remote Power = 7.63 to 8.63 dBm UpStream/Local Power = 10.12 to 12.48 dBm UpStream/Local SNR Margin = 15.5 to 18.5 dB

-=*=-

2008-Jun-1:

Perhaps "UpStream/Local SNR Margin" should read
"DownStream/Local SNR Margin", it's a bit confusing
if one compares the Web GUI and 'DMT' outputs!...

-=*=-

As you can see, the SNR Margin gain, even if it
is improved relatively to the very 1st post, now
doesn't make much progress since 0.5 dB can't be
considered to be signidicant due to fluctuations.

I'll know you've started to implement a form of
Spectral Shaping once the numbers moved below
the Power ranges shown above. By the way, more
Power means more heat so i suggest you find a
way to keep your GNet relatively cold if the work-
load makes it necessary... Now, in reality it's not
what i would call an overwhelming task to tweak a
GNet: it can be slow but right now i see only three
fields which need to find their "sweet spot"...

;)

The "max. Bits/Bin" box might make the DSL signal
paradoxically stronger when its values decreases
but even if it's made a bit more immune to noise
you may actually observe a lower SNR Margin past
the sweet spot. If you don't wish to evaluate the
whole sequence from 6 to 13 then i'd suggest you
try to proceed by halves. Determine what's the
limit, find the value halway and test this one. If it
works better, use that value as one of the new
limits and proceed in the same manner by finding
another half-value again. It's not garanteed to
work in a predictable way but you can try to save
some time and effort in that manner. Once your
trade-off via the "max. Bits/Bin" field is done,
you can work on the "Upstream frequency bands".

This one is trickier but a thinner/lower range
should translate as less local interference...

Lets say the upper limit is set to 32, that's as
close to your DownStream bandwidth as you should
get and you just want to do the opposite. Go way
down until it breaks and back off a bit to get a
working signal again. The bets are open, it may
be something like "8 - 14", "12 - 18", 6 - 14" or
whatever. Watch the transmission power level and
when you're satified that it's been decreased a
bit try a new "Bin Weight" ("max. Bits/Bin"), etc.]]> http://www.dslreports.com/forum/remark,20556062 Thu, 29 May 2008 03:34:54 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20555973 Bicephale : Oups!

I forgot to mention the Maximum Theoretical
Speed is supposed to be a multiple of 32...]]> http://www.dslreports.com/forum/remark,20555973 Thu, 29 May 2008 02:42:07 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20555948 Bicephale : Hi,

There's still a problem with the UpStream SNR Margin
so it would be hard to convince your ISP to ask Bell
for a profile raise, in my own opinion! If the decision
were mine, i know i'd have a hard time trying to put
in the balance the fact that you're on "Interleaved"
mode vs your relatively stronger DownStream signal.

:huh:

The areas coloured in purple are those you must focus
for the time being, while the ones in red shall guide
you toward the goal to attain... 1st of all, call the
ISP and request that they capture the statistics from
Bell's "Line Test" portal in order to know what your
RCO numbers are with and without tweaks, additionally
to the attenuation levels. The other numbers coming
from the ISP's end would be nice to see as well. As
for the tweaking itself, once you have done this you
will find that there's no easy way to accomplish this:
it's a slow process during which you must try to learn
what value ranges are acceptable. Ideally, this must
be done one parameter at a time and then you can try
combinations later... For example, it's probable the
MoDem won't connect if you change all the numbers at
once using extreme values; lower 1 parameter slightly
(in steps) each time until you reach a limit beyond
which issues occur. Keep in mind that this limit may
very well move while other parameters are optimized,
meaning you better revisit previous limits when some
progress is made and then back off a bit to remain in
the stable operating range. The objective is to give
away some transmission power and hence related noise:
watch the UpStream "Tx Pwr" (Transmition Power) level
in hope that a few less dBm will translate as a few
more dB, with the UpStream SNR Margin but possibly
also the DownStream SNR Margin since less local noise
should leave more room for the DownStream signal too.

;)

Euh... I made an error about the RCO in this graphic:
you should read "Enter Maximum Theoretical Speed based
on RCO"!... It may equally tell us what's a viable target.

:p

]]> http://www.dslreports.com/forum/remark,20555948 Thu, 29 May 2008 02:30:22 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20554867 BobTheVeg : I used the settings you gave me. Reduced the upstream bins/speed.
I enabled the log each 10min and noticed that the Downstream SNRM has hit 20.0 over the day which I never seen before. As opposed to 11.5 from my first screen shot.

Reduced speed

]]> http://www.dslreports.com/forum/remark,20554867 Wed, 28 May 2008 22:02:08 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20544447 Bicephale : Hi again,

I revisited your inital post, i woke up and
thought maybe i could get thru once more...

:p

When i align the numbers on a paper sheet,
these conclusions emerge: the attenuation
levels are both steady and so is the Remote/
UpStream SNR Margin which is a mere 6 dB. I
can observe both power levels fluctuate: on
the Local/UpStream side from 10.12 to 12.48
dBm, on the Remote/DownStream side from 7.63
to 8.63 dBm. Finally, the Local/DownStream
SNR Margin varies from 15.5 to 18 dB but we
see this happen quite often on DSL Reports.

Now, the "noise" curve says that your line
is suitably quiet except on some occasions.
The level of CRC Errors you're experiencing
is of no concern and it is normal to have so
few on an interleaved profile such as yours.

Well, there can be noise bursts but at the
moment this is what the curve leads to...

;)

The UpStream SNR Margin, on the other hand,
is a major problem since there's no safety
margin left. I was hoping "Spectral Shaping"
would help here by allowing you to lower the
UpStream speed to something like 512, 384,
288 or even 256 Kbps - whatever it takes...

Unfortunately, the late 'DMT' capture appears
to indicate that your GNet BB0060B device is
not responding to tweaking the way mine does;
it's so puzzling i wonder if you saved this
configuration and rebooted (a cold power-up
boot, for example)... In any case, the final
objective is to make trade-offs relatively
to your UpStream signal as i just explained.

Lets suppose you managed to force this GNet
unit and its peer to negociate 2496/288 Kbps,
that doesn't mean you won't be able to find
a "sweet spot" where the UpStream SNR Margin
will be adequate/tolerable. Using "InterLeaved"
mode already, tweaking might buy you a raise
of profile but there's something wrong with
your attenuation levels: they tell me your
estimated "GNet distance" is shorter than my
own by five hundred meters and yet i'm on a
6016/512 Kbps Interleaving profile! So, it
seems to me it's likely because of a wiring
problem which Bell "fixed" by lowering your
profile instead of actually going after the
source of failure... I've thought of urban
cross-talk as the explanation but it would
not resurface like this just because one more
DSL neighbour arrived or switched to "Total"!

:hmm:

There are limits to what MoDem tweaking can
accomplish and trade-offs have to be made,
it's not going to resolve any phone line issues
magically but good trouble-shooting can help
you to understand the situation and then you
will be more persuasive when the time comes.]]> http://www.dslreports.com/forum/remark,20544447 Tue, 27 May 2008 04:43:04 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20544006 Bicephale : Hi,

I looked at your 1st tweak attempt and marked
the elements which you may want to modify, my
suggestion is to proceed in three steps. 1st,
emulate previous tweak samples and yet try to
use realistic values when necessary (clearly,
"DownStream" and "Tx Power Atten.", considering
that an SNR Margin of 6 dB doesn't leave room
for "Tx Power Atten." adjustments). I'm not
sure the "DownStream" field can really affect
the final results but i'd give the ISP a phone
call and ask what the RCO numbers are in order
to have a clue what number to enter there...

Step 2 represents the major part of the work
to be done, you're on your own on this one as
it is not an exact "science"!... I recall that it
was necessary for me to acquire some "feeling"
relatively to how the US/DS tweaks worked, the
numbers i gave you are only for starters, it
was in hope to provide a setup that connects.

Step 3 is optional, once you got acquainted
with it much better it's permissible to explore a
tighter form of control, namely the bin weight.

I'm sorry that's all i can do, the DSL Reports
site doesn't work well for me tonight... I think
i'll be lucky if i can post at all!

]]> http://www.dslreports.com/forum/remark,20544006 Tue, 27 May 2008 00:11:19 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20543448 BobTheVeg : Here is the result after 24 hours with the settings you suggested me.

I just noticed that we have a different software version. I assume upgrading this is the danger of flashing you warned me about.

24h with config

]]> http://www.dslreports.com/forum/remark,20543448 Mon, 26 May 2008 21:52:42 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20543421 BobTheVeg : Here is 2 pictures of the custom build RS-232c cable

I took an old "D-sub" of the remaining parts of an old computer. »en.wikipedia.org/wiki/Image:Dsubs.png

And an old COM1 mouse. I had to cut into the connector in order to see which color is which pin number.

I also pulled out the IDE pins of an old ISA sound card (CD-rom was connected on the sound card at that time). I used the pins to connect each wire together.

]]> http://www.dslreports.com/forum/remark,20543421 Mon, 26 May 2008 21:46:13 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20539040 BobTheVeg : Here is some test I ran before and after. My connection was "fixed" during the 2008-05-22nd.

»/testhistory/1071579/5940e

I can clearly see that I received a 30ms ping increase.]]> http://www.dslreports.com/forum/remark,20539040 Sun, 25 May 2008 21:44:37 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20538806 Bicephale : Wow! That's a 1st all right, especially with a GNet!!!

Now there's a very good reason to like console ports!

Handy, insn't it?!... Sincere congratulations, really!

:D]]> http://www.dslreports.com/forum/remark,20538806 Sun, 25 May 2008 20:48:46 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20538647 BobTheVeg : I guess I am now part of the pioneer club ;-) !

I managed to build my own rs-232c cable and I can connect with DMT/change settings while using my ipCop router for PPPoE dial.

I'll have results in 24h.]]> http://www.dslreports.com/forum/remark,20538647 Sun, 25 May 2008 20:03:28 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20538186 Bicephale : Oh, and don't forget to try the [Refresh] button when
the 'DMT v2.20' readings don't seem to make sense!...]]> http://www.dslreports.com/forum/remark,20538186 Sun, 25 May 2008 17:37:20 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20538182 Bicephale : Hi again,

It isn't clear if you have an NID outside, if so then
i doubt you'll be able to fit the "Wilcom PS-15 ADSL2+
Wall-mount POTS Splitter" inside of it. On the other
hand, installation of a POTS Splitter inside some NID
should be done by the phone company's own people.

;)

The tweaks i suggested won't work unless you click on the
[Apply] button and then the [DSL Resync], or preferably,
the [Reboot + DSL Resync] button - which implies that
the GNet BB0060B would be working as a MoDem/Router (in
stand-alone mode)... It's quite possible you'd be able to
use 'DMT v2.20' in combination with this DSL device set
to "Bridge" (aka "Dumb MoDem") mode via a custom RJ-45
to DB-9 serial RS-232 adaptor cable but i never bothered
to try so you'll be the 1st. Welcome to the pioneer club!

:p

As you may have noticed, 'DMT' does also support COM1'.

If this fails, the only alternative would be to remove the
router and to switch the BB0060B to MoDem/Router mode.]]> http://www.dslreports.com/forum/remark,20538182 Sun, 25 May 2008 17:36:02 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20538129 BobTheVeg : I was looking for something like this: »www.wilcominc.net/Item.cfm?ProdID=35

To centralize my home wiring. Is there a good online shop where I can find comparable product in Canada.

I also tryed to set my GNet BB0060B to:
"max. Bits/Bin" = 14
"UpStream (Tx) Bins" = 8 (Start), 24 (End)
"DownStream (Rx) Bins" = 36 (Start), 192 (End)
"Coding Gain" = 7

But I am facing the problem that in order to be able to make my router connect with a PPPoE connection I must reboot the DSL with default configuration otherwise my router will never connect. Doing so, I lose the configuration.

I assume that I must have a COM1 cable to use the console in order to apply configurations.]]> http://www.dslreports.com/forum/remark,20538129 Sun, 25 May 2008 17:16:56 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20537790 Bicephale : Hi,

I use a GNet BB0060B as well so i wrote this for the GNet owners:

GNet Tweaking, Bicephale, 2008-Feb-18

Considering you're now on a 2496/640 Kbps profile, try:

"max. Bits/Bin" = 14
"UpStream (Tx) Bins" = 8 (Start), 24 (End)
"DownStream (Rx) Bins" = 36 (Start), 192 (End)
"Coding Gain" = 7

Once this is done you'll need to capture 24 h CRC Error
rate curves in order to see if it's reasonable to ask AEI
for a better profile... By the way, Bell didn't "fix" much
that i could see! Your "Remote SNR Margin" remains too
close to 6 dB and that's the problem they had to fix...

Oh, one other thing: DON'T FLASH YOUR GNET BB0060B
OR YOU MIGHT END UP READING THIS SORT OF THREAD:

Now you've been warned!

;)

Finally, i suspect you may have a wiring issue so i'd
like to know if you can deal with it: house wiring...

I also wrote something in order to help a bit with that:

The customer's own wiring, Bicephale, 2007-Jun-13

The objective is to turn as much red/purple into green as you can,
so that in return your CRC Error rate and RCO figures improve - the
later being available only through your ISP using Bell's resources...]]> http://www.dslreports.com/forum/remark,20537790 Sun, 25 May 2008 15:32:06 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20536945 sashwa : Let's get you moved over to our Canadian Broadband Forum for some help.

Good luck.]]> http://www.dslreports.com/forum/remark,20536945 Sun, 25 May 2008 10:55:46 EDT Re: Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20536913 McSummation : It looks like they "fixed" your problem by dropping your sync speed. You might want to start by calling them and asking why they did that instead of fixing what ever it was that was wrong.]]> http://www.dslreports.com/forum/remark,20536913 Sun, 25 May 2008 10:44:57 EDT Need help/tips about DSL connection speed http://www.dslreports.com/forum/remark,20535666 BobTheVeg : Hi,

I recently had trouble with my connection ( getting disconnected very frequently ). I called my ISP ( aei.ca ) and they told me that Bell would handle it and verify my line. A day after I got a call from both Bell and aei. Bell said that there was indeed a problem and that it was fixed. Aei called and asked if the problem was solved and they did fix the connection problem.

This problem never happened to me in the last 4 years I have been with aei.

Now I am facing a new problem and it is my connection speed.

I am using a GNet BB0060B.
Model: Viking
H/W Version: 810012
S/W Version: VIK-1.38.030917a

My connection profile seems to have changed. I am wondering if I can tweak it back as it was before or there is nothing I can do.

I could not find any information on those:
RValue, SValue, DValue

I would like to know if this information is good and if I can improve it:
Local Tx Power: 12.13 dB
Remote Tx Power: 8.11 dB
Local Line Atten.: 35.0 dB
Remote Line Atten.: 16.0 dB
Local SNR Margin: 17.5 dB
Remote SNR Margin: 6.0 dB

The DMT screen shows that I could change:
- lower the Tx Attun
- the bits per bin
- the coding gain
- ec fdm mode
- up/down bin allocation

I have no idea what to adjust.

Before They Fixed the Problem
After They Fixed the Problem
DMT Tweaks

]]> http://www.dslreports.com/forum/remark,20535666 Sat, 24 May 2008 23:05:17 EDT