Oinktastic
join:2005-08-24
Scarborough
 ·TekSavvy Solutions..
 ·3 Web
1 edit | reply to Bicephale
Re: Help/Advice with my Line Statistics please
said by Bicephale  :Speaking of waiting how are your RF Choking experiments going?... I didn't notice much of a difference between 0 and 5 turns. I'll see what happens if I leave 8 turns around the choke tonight. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| No, i meant Mauricio as he now has the tools to measure the difference.
In your case the remote must have made your DSL signal stong enough
to consider using even more turns, especially if no effect is noticed... I
recall you wrote about noise on the "voice" part so here's at least one
section where i wouldn't hesitate to use a fair amount of RF Choking.
What's puzzling about your case isn't the presence of noise but the fact
that the UpStream band ("TxFecErr") gets hit by noise in such manner:
%20.GIF)
Just signed up for DSL. Hello fellow Teksavvy users!, Bicephale, 2009-Nov-3
%20.GIF)
Just signed up for DSL. Hello fellow Teksavvy users!, Bicephale, 2009-Nov-9
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Bicephale
join:2005-09-24 | reply to Mauricio
Mauricio?
»In-depth analysis of line stats
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Mauricio
aka CigaR
Premium
join:2008-12-06
| Yeah, had a problem with my flickr account. Will try to post them back eventually.
Concerning the RF chokes experiments, I had to call it off due to a busy schedule at school. I will get back to it eventually, unless my line gets upgraded...  |
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Bicephale
join:2005-09-24 | Thanks for keeping us informed, good luck with your schedule!
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dslrocker3
join:2002-05-26
Toronto
1 edit | reply to dslrocker3
before w |
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dslrocker3
join:2002-05-26
Toronto
4 edits | reply to dslrocker3
Here are 4 DMT screenshots. They show how using a centralized filter actually makes my signal to noise ratio go down! "Blue wire" refers to the wiring that I was using to feed my DSL jack previously and "white wire" refers to the one that I am now using to feed my modem. When the centralized filtering was removed, all house wiring was left connnected but phones were obviously disconnected. The results go completely against what I would expect. I do not believe that it is actually the centalized filter that is causing the drop in signal to noise ratio margin but I do suspect that the extra attenuation added to the loop when the filter is removed helps the connection. It's a shame that my strange extension cord is no longer able to boost my signal.
This information appears to be telling me to go back to attaching a filter to each phone device. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| Before i make any further comments please allow to bring to
your attention the fact that those snapshots show up times
which are insufficient, especially if one considers that you'd
need to let it settle for hours given the very low error rate...
It's even more delicate when the level changes are so small.
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dslrocker3
join:2002-05-26
Toronto
1 edit | That's a true point that the differences are small and that the screenshots only show a connection in action for a split second. I did repeat the process for a few times and each time, the connection was better in signal to noise ratio margin when not filtering the house's wiring. Time will tell and maybe after a few days, I'll try going back to connecting a filter directly to each phone. On another note, since the extension cord no longer helps, I have to say goodbye to "strange wiring". I went and switched the "strange wiring" to the filtered side and the 100ft cat5e direct to the basement to the unfiltered, dsl side of my wiring. |
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wayjac
Premium,MVM
join:2001-12-22
Indy | Are you going to fit a filter at each phone and also filter in the basement |
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dslrocker3
join:2002-05-26
Toronto
| said by wayjac :Are you going to fit a filter at each phone and also filter in the basement nope, I would remove the filter in the basement becaause preliminary results show that my connection is slightly better without one there. I would just attach a filter to each phone directly. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
1 edit | With a "Bridge Tap" and an IKNS remote only making echoes
worst my bet is you're condemned to proceed through trial
and error, you can't just trust normal rules anymore. Enjoy,
these could happen to be quite stimulating times!...
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dslrocker3
join:2002-05-26
Toronto
| said by Bicephale :With a "Bridge Tap" and an IKNS remote only making echoes worst my bet is you're condemned to proceed through trial and error, you can't just trust normal rules anymore. Enjoy, these could happen to be quite stimulating times!... I just realized that if there is indeed a bridge tap on my line like the Bell technicians have said before, it must be very nearby because my loop to the remote is already very short. This just means even more craziness with my line! |
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Bicephale
join:2005-09-24 | Most unfortunately it's not close enough to open a ticket...
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dslrocker3
join:2002-05-26
Toronto
| said by Bicephale :Most unfortunately it's not close enough to open a ticket... Yeah sure, I should open a ticket. I just can't wait to see what will happen to my 6016/800 Kbps fast path profile if I do that! Maybe I'll get the famous 64/64 Kbps profile just for being a smart ass with Bell! |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| Nah! Not that bad, maybe something like this:
»Re: new customer need help interpreting line stats
...but to a lesser degree, hopefully!!!
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dslrocker3
join:2002-05-26
Toronto
3 edits | reply to dslrocker3
I have what sounds like a ground hum on one particular phone and it only happens on one of my jacks (others phones don't have the humming sound on this jack). it gets worse if i put the phone on top of my laptop. I wonder if the interference my laptop provides could also affect DSL. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| The humming frequency itself being 60 Hz i doubt it has a
significant effect even if present at the unit's WAN input,
but if it comes from a noise injection site coupled to aerial
power wiring picking up airborne noise on top of the street
then it could be of concern, although unlikely in a case as
yours because the DSL signal happens to be too strong!...
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dslrocker3
join:2002-05-26
Toronto
2 edits | reply to dslrocker3
Unfotunately, no matter what I do, I cannot get that magical extension cord to do anything positve any more....
These screenshots would appear to confirm what I was seeing yesterday. I get slightly higher attainable rates and lower RCO's when I do not use a centralized filter in the basement. I went and tried my modem in the basement and you will see that the best results happen even there when I reconnect all of the house's wiring (not filtered). So the question is this: do I go for slightly lower RCO's and slightly higher attainable rates but not using a filter in the basement or do I lose 1% to 2% in RCO (worse) and take what is probably the "safer" route? |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| I'd sugest you go for the lower RCO: it's convenient as it
will allow you to move the MoDem around and this is what
Bell opted for when they 1st launched their deployment...
You signal is strong enough to sustain a fair amount of RF
Choking, even if i doubt it would have noticeable effects.
Why not optimize that RCO and RF Choke simultaneously?
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