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| Anyone had their Line Problems escalated to BT? |
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| message from Dee on 24 Jun 2005 |
We're getting something like 18db Downstream SNR at the Master Socket
with the entire home phoneline system disconnected, no filters, no
phone, etc just an ADSL modem - tested it now on 3 different modems and
all give at best 15db to 21db at the master socket with 18db seeming to
be the norm.
by the time we add in the phone system and put the ADSL modem in my
bedroom the signal is pretty poor and dips under 6db before
disconnecting, so plusnet have escalated the problem to BT and says it
may take upto 21 days to be sorted out
Anyone know what is likely to happen next? I'm going away for 8 days and
the family at home have to live with going downstairs to the master
socket to answer calls now for that time.
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| Phil Thompson replied to Dee on 24 Jun 2005 |
if the BT engineer gets a good signal in the test socket but a crap
one with your wiring reconnected he should install a faceplate filter
unless there's a more obvious fix.
you can simulate a faceplate filter yourself - plug a microfilter into
the test socket behind the NTE5
as shown at http://www.clarity.it/telecoms/adsl_faceplate.htm#part3
plug your modem RJ11 into that, then plug the current faceplate front
into the BT socket on the microfilter. Might be a bit of a tight fit
in which case use a short extension loop.
This gives you an unfiltered modem feed and everything else the other
side of the filter. Should fix it.
Phil
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| kraftee replied to Phil Thompson on 24 Jun 2005 |
No he doesn't, not any more, & fitting the SSFP at the master socket ties
the DSL service to the same place anyway
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| Phil Thompson replied to kraftee on 24 Jun 2005 |
what, given up fitting SSFPs if the modem will sync in the test socket
but not on the front ? What's the new regime ?
no big deal in this case, the OP currently has the modem *and* the
phone tied to the master socket
Phil
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| kraftee replied to Phil Thompson on 25 Jun 2005 |
Yes but he wants it to be in his bedroom (check the original post).
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| Phil Thompson replied to kraftee on 25 Jun 2005 |
that can be inferred, true.
So if the signal is OK in the test socket but not the front plate of
the master you walk away now, unless the customer wants to pay for a
rewire ?
Phil
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| Dee replied to Phil Thompson on 26 Jun 2005 |
Just to clarify the signal at the master socket with nothing else
plugged in (no line filters, telephones or other internal wiring) is
18db - plusnet say that BT's remote testing says I should be having
around 49db at the master socket
Internal wiring has been check by my Father who was a telecoms engineer
for over 27 years, now retired.
As far as we are aware 18db at the master socket which can drop to as
low as 12db and probabaly lower when we're not watching is too low.
would be nice if there was a program to plot a graph of the SNR download
Db figure over time to see how it varies during the day and over a week.
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| kraftee replied to Dee on 26 Jun 2005 |
The remote tester can't/doesn't test SNR it only test loop attenuation, so
what they're saying could be true & what you're saying could be true at the
same time, seeing as you are quoting SNR whilst your ISP is quoting Loop
attenuation...
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| Phil Thompson replied to Dee on 26 Jun 2005 |
you're confusing two things there - 18 dB is the noise margin and is
perfectly sound. 49 dB is the attenuation between you and the exchange
not really, its a margin over that necessary so it only fails if it
drops to zero. 6 is the target for "normal" use or 10 for more
demanding applications like video streaming.
I have seen these, in fact a movie "waterfall plot" of the
channel-wise SNR. I think it needs SNMP or a command line access to
tthe router stats, or someone clever to extract values out of the web
interface and store them up in a spreadsheet.
Phil
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| kraftee replied to Phil Thompson on 26 Jun 2005 |
Yep because everything from the master socket is customers wiring & so is
the customers responsability. There's not a lot of people out there paying
rental for extension & all that are installed nowadays are bought.
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| Phil Thompson replied to kraftee on 26 Jun 2005 |
thanks for the clarification. I thought if you got sync in the test
socket and not on the faceplate you fitted the SSFP (with its
limitation of localising the ADSL) for "free" but it sounds like one
would have to ask for that and pay for it now ?
Phil
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| kraftee replied to Phil Thompson on 27 Jun 2005 |
Depends on which brand of 'best efforts' the engineer is working with, it
can range from SSFP & digi extension fitted, to SSFP, to sweet fanny adams &
even when queried you just don't get any form of workable reply from the
powers that be. Personally I normally fit an SSFP but only if the PC is
within range of the digi extension, unfortunately this is not always true &
it then all becomes a bit of a compromise.
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| kraftee replied to Dee on 24 Jun 2005 |
Not a lot unless you want to pay to have _your_ internal wiring checked & if
you want it changed you'll have to pay again. BT's responsibility stops at
the NTE5 master socket, everything after that is all your responsibility.
All you can hope for is the BT engineer is in a good mood & looks outside
for way to increase your signal (& in doing so improve your SNR), if not
they'll test at your NTE say everything is ok & leave..
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| Peter M replied to Dee on 24 Jun 2005 |
Buy a DECT phone off Ebay for perhaps 20 quid (one with a couple of
handsets) so as to save their legs and reduce their tempers! Peter
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| Ian Stirling replied to Peter M on 24 Jun 2005 |
If you've got a house of modern construction, with no foil backed
plasterboard.
I get a very, very spotty signal in my bedroom from the DECT basestation
5m away in the lounge, through 1 60cm stone wall.
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Archived message: Anyone had their Line Problems escalated to BT? (Broadband - Cable, Internet, Routers etc.)
