Bicephale
join:2005-09-24
 ·TekSavvy Solutions..
3 edits | reply to TSI Steve
Re: A wire is a wire is a wire
And...
Lets not forget an old customisation idea of mine:
«Just thoughts: if my Twin PPP configuration could
be adapted to switch ISPs automatically in case of
a disconnection then a customer who needs to reach
his home PC(s) remotely would have a better chance
to do so.»
Also (while i'm at it)... What about adding value
to our STs by making them even more customisable?:
Thomson SpeedTouch 5x6 & 585 EJTAG "De-Brick" Access, Bicephale, 2007-07-02
Addendum
It seems my thread was interrupted at this point:
A wire is a wire is a wire, Bicephale, 2007-Oct-11
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| reply to Bicephale
 .JPG/thumb.jpg "200448 bytes")
The Last Straw - Outdoors Shielding |  .GIF/thumb.jpg "42336 bytes")
The Last Straw - Before vs After |
Looking at the amplitude of yesterday's peaks from
12 h to 18 h i notice that those of today, between
7 h and 11 h, were fainter except the last sample. |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| Note.:
I've concatenated the present thread as a one-time
post which became my conclusion for this other one
because together they cover the wiring part fully:
The customer's own wiring, Bicephale, 2007-Oct-30
I also addressed configuration aspects thru a link
to my "tweaks" thread, which completes the picture
as far as an average customer will be concerned... |
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| reply to Bicephale
Bonjour Old Computer,
I want you to see this, the ferrite trick works so
well i find it hard to believe. See for yourself:
Tweaks, Bicephale, 2008-Jan-14
It seems i'm accumulating paradoxal static records
here! Sometimes what your see isn't what you get:
%20.PNG)
SpeedTouch 516 Tweaking :), Bicephale, 2007-Dec-11
J'ai beau informer les gens de cette situation, il
semble que même les usagers réguliers du forums ne
remarquent pas les avis en grosses lettres rouges:
SpeedTouch 516 Tweaking :), Bicephale, 2008-Jan-11
Peut-être aurez vous des arguments convainquants à
formuler, moi j'ai eu beau essayer on m'ignore!...
Perhaps you have better teaching skills than i do,
your input on these contradictory readings is more
than welcome. Your experience with radio HardWare
might be usefull, can you shead some light for us?
For example, how come do i worsen attenuation just
by removing toroidal chokes on the DSL phone input
considering we could expect the signal to be a bit
stronger once it's been taken off? Is it possible
that what i've got here is acting like a "loading"
coil but for DSL frequencies? Lets not forget the
SNR Margin numbers and Spectral Response curves...
Am i right to think it's ironic to obtain mediocre
noise performance with an SNR Margin of almost ten
more dB, not to mention the nicer spectral curve?!
I thought this was an interesting riddle you might
want to know of. What's on your tongue? Tell me!
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Old Computer
Premium
join:2002-04-12
Europe
| Hi Bicephale,
I can't reproduce such graphs with my ST546 V6 but I have changed the house internal wiring completely last week end.
I have now a direct twisted pair 0.8mm wire from the outside connector witch belong to FT. I have installed the master filter you have the diagram (nice filter) just close but inside the house.
I have gain around 300 kbp/s all day with the same SNR due to the auto-adaptive DSLAM keeping 7db SNR. On 24h I got around 60 to 80 CRC errors only with the latest 7xx Firmware.
Also I have put some more "ferrites / Core " on each switching power supply in my room.
So, I am happy with that results. (53 db attn - 4200m from RCO)
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Bicephale
join:2005-09-24
·TekSavvy Solutions..
| Bonjour Old Computer,
I wish Bell (our phone company like France Telecom
is yours) were offering such quality DSL filters!:
%20.PNG)
High Quality European ADSL Low-Pass Filter (60 dB rejection @ 40 KHz)
Hummm... But i guess FT doesn't carry it neither;
you had to build it yourself, as i recall! Right?
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Old Computer
Premium
join:2002-04-12
Europe
| Hi Bicephale
Sorry to disappoint you, but the filter is not mine. 
I don't have enough good equipment to achieve so good results, and maybe not the intellectual capacities.. lol
You need at least a spectrum analyser, oscilloscope (I have one) and a good BF / HF generator. (And all characteristics of the tores used for).
I got it 1 year ago. It is from Alcatel but not sold public. Was installed by FT some years ago on request.
A nice one is the LEA Filter PCE2B0P-20, but I never could get the diagram.
»www.leacom.fr/page.php?rubrique=···c76e6b88
You can grab the specs in .pdf format.
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Bicephale
join:2005-09-24 | Hi,
At least, some effort is being made to characterize the Lea filters...
My only disapointment is that it may be pointless to ask Bell for this!
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Old Computer
Premium
join:2002-04-12
Europe
1 edit | I already opened the Alcatel filter.
BTW you can't see the cores or capacitors. The box is filled with a sort of hf brown glue.
Edit : How it looks .. and if you want to buy one ...
»speedtouchdsl.de/shop/product_in···uage=en& |
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Old Computer
Premium
join:2002-04-12
Europe
| I got this about Specs of LEA filters:
Have a look on the attachment.
With one standardized pinning it is possible to place xDSL filters like the ITU-T
G992.1 Annex A (POTS +E1) 600 Ohm and ETSI ATA TS 101 952 -1-1 option
(A) and ETSI ATA TS 101 952 -1-1 option (B) on one PCB layout. |
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