Re: ADSL Filters why are they neccessary?



sibell73@xxxxxxxxxxx wrote:
Kraftee

Sorry to ***-in with another broadband question but you do seem to
know the answers as obviously on it (DSL) every day.

Got a friend who has just recently signed up for BT Broadband Opt2.
Couple of days late going live due to capacity problems (GU), BT
supplied Voyager 205 (mains powered), connected to PC on USB, with
BT
supplied filters (everything is made in China).

SInce install, they have had constant problems, when phone goes
off-hook to make/receive a call - disconnects broadband (DSL light
flashes away, takes around 5 mins to come back to life), this
sometimes also goes down on its own without phone off-hook.
Also there is noise on the line intermittently, which was not there
before.

That could be the modem synching up & is a known phenomena..

After several reports to BT, indian women called back to say line
test
done ok, no fault found. BT broadband helpdesk have not been a lot
of
help either.

First mistake, luckily you've got away with it this time, you don't
report DSL problems to BT (ie 151) you have to report them to the ISP,
in this case being BT Broadband. I'm saying you are lucky for if the
front desk person had taken the fault you could have landed your
friend with a visit charge & still be no further along on the problem.

So I have tried a number of things with them:

Checked, they have no extension wiring - just an NTE5a.
Checked all standard telephony kit working through filters.
Removed BT DECT phone, replaced it with standard POTS.
Removed Sky box (which was filtered).
Tried 2 different filters than the BT supplied ones including a
known
working one of my own.

Hang on you stated that there was no extensions & then go on to say
you have at least 1 (sky digi box)..

Step back & take a long hard look at this insatllation, as a quick
aside, has it got any flat extension wiring if so that could be the
cause of your problem.

Go back to the NTE5a, remove the bottom faceplate, if you are feeling
really brave take out the 2 screws of the backing plate to ensure that
there is only one pair of wires attached to the screw terminals. If
this is so replace these 2 screws & leaving the faceplate off plug in
a filter & then the voyager 205, connecting that to the mains off
course. Leave it for at least 10 minutes ,yes I know, it'll seem like
for ever but remember I have to go through this at least 3 times a
day, if not more. If the DSL light comes on then you problems lay
firmly in the internal wiring if it doesn't it'll be outside & could
be any number of things & you will have to report the matter to
_BT_Broadband_ not 151. If it doesn't 'come alive' with one filter
try another until you've tried all that you have on site (I'm sure
that if I can get boxes of 20 faulty SSFP's you could get 2 in with
the modem). Then plug in the Dect phone & see if that causes any
problems, it shouldn't but you never know


None of this has had any affect.
I was planning to go round this weekend with a spare speedtouch
modem
I have to try that for a while and fit a faceplate filter to the
NTE5a. Do you think any of this is worth doing or should the fault
just be pushed with BT to a certain phone number etc ?
If you have any good guesses to the cause of the fault, this would
be
appreciated.

Do as I've said above, remember if you get synch at the test socket of
the NTE it's your problem (or should I say your friends problem) & if
you do call out an Openreach engineer that is where he will test to.
If you want anything extra it costs £45 for the first 45 minutes &
then £15 for any extra 15minutes or part off (plus VAT of course).

75% (or near enough) of all the DSL faults raised on lines which have
been recently activated are normally down to either customers error or
wiring, it's only the odd 25% which prove to be something more
interesting (non chargable as well)

HTH


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