Hi there,

Am upgrading to BroadBand shortly and have a question about the
installation of microfilters.

BT master socket upstairs. Dect phone base station plugged into that.

2 extension sockets run downstairs. 1 to study and 1 to lounge.
Using the study socket for dial up access to be replaced by ASDL.
Lounge socket is currently unused.

Id like to keep dial up for occasional use from the study.

So am I right in assuming I need just 1 microfilter in the study to
split the ASDL router and modem? None upstairs or the unused socket?

TIA

Jeff

On Wed, 12 Jan 2005 10:46:58 -0000, "Jeff W" <Jeff@nospam.com> wrote:


You'll need two - one for the modem and one for the DECT phone.
Remember that you need a filter where *any* device would normally plug
directly into the socket e.g. analogue modem, Sky box etc. Extensions
where there is no device does not need a filter.

Before I begin,
Please select Plain Text from the "Format" menu.

Now on with the point.
If you have a burglar alarm that's connected to the telephone line then that
can cause problems, especially if it's "hardwired" rather than plugged into
a socket.

"Richard Sobey" <spam@rasobey.co.uk> wrote in message
newsp2au0hm9si5rufbc0tohbvv7384f40o5u@4ax.com...
[..]
decided
I no longer need the modem access?

Jeff W wrote:
The official line is yes, but there are some people who insist you don't.
Personally I would, if for nothing else I have known ringing current to
knock a modem out of synch.....

fishman wrote:
You can get around that by using a SSFP & wiring on the back of that,
onlproblem then is that you won't be ablt to use ADSL from any other
socket...

In an earlier contribution to this discussion,
Jeff W <Jeff@nospam.com> wrote:

Yes, but you'd still probably need a BT to RJ11 adapter - 'cos most ADSL
router cables have an RJ11 plug on the end which won't plug straight into a
BT socket. The ADSL (unfiltered) outlet on a plug-in micro-filter is RJ11 -
so this is often a convenient (but not the only) way of getting an adapter -
even if you don't need the filtered outlet for any analog equipment.
--
Cheers,
Tim
______
Please reply to newsgroup. Reply address is invalid.

On 12 Jan 2005 in uk.telecom.broadband, "Tiscali Tim" wrote:

The last few DabsValue 4-port routers bought by a client of mine
have had two cords, one with a BT plug, the other RJ11 - RJ11



--
PlusNet <http://tinyurl.com/24ymz> - I recommend them and save some cash.

My other ISP : UK Free Software Network <http://www.ukfsn.org>
UKFSN passes all profits to Free Software projects in the UK.

In an earlier contribution to this discussion,
Peter M <us-mail@rocketmail.com> wrote:

That would be useful for some people.

Some fool is sure to use the BT variety and plug it into the *filtered*
outlet of a micro-filter - and then wonder why it didn't work!
--
Cheers,
Tim
______
Please reply to newsgroup. Reply address is invalid.

"kraftee" <kraftee@spamoff& die.com> wrote in message
news:41e51c68$0$54815$ed2619ec@ptn-nntp-reader02.plus.net...
" I have known ringing current to knock a modem out of synch..... "

Man, how strange. How would a filter stop this then? Does the bell wire have
it's continuity broken by a filter?

Since you have a DECT phone, maybe with caller ID??, make sure you don't
skimp on your filters and get decent quality ones. Those from ADSL Nation
come highly recommended by various posters to this NG, including myself.



"Jeff W" <Jeff@nospam.com> wrote in message
news:1105526819.681174@ernani.logica.co.uk...
Hi there,

Am upgrading to BroadBand shortly and have a question about the
installation of microfilters.

BT master socket upstairs. Dect phone base station plugged into that.

2 extension sockets run downstairs. 1 to study and 1 to lounge.
Using the study socket for dial up access to be replaced by ASDL.
Lounge socket is currently unused.

Id like to keep dial up for occasional use from the study.

So am I right in assuming I need just 1 microfilter in the study to
split the ASDL router and modem? None upstairs or the unused socket?

TIA

Jeff

Ed Start wrote:
Well considering most filters are only 2 wire connections, what do you
think, seeing you think yourself so clever???

If you don't believe me, unplug on & count the termination strips in the
plug.....

"kraftee" <kraftee@spamoff& die.com> wrote in message
news:41e56c4d$0$96065$ed2619ec@ptn-nntp-reader02.plus.net...
"Well considering most filters are only 2 wire connections, what do you
think, seeing you think yourself so clever???"

Don't be an arse man, if the filter did NOT put the connection through on
terminal 3 the bell would not ring in some phones and I doubt that it would
meet BT type approval. Remember what a filter is for, the benefit of the
TELEPHONE, you know, the thing with a bell in it that rings......

You just playing at being dumb or do BT really employ people like you for
real????

Ed Start wrote:
You obviously haven't checked have you, be brave, go on check, even the
plugin microfilters supplied by BT have only 2 contacts in the plug.

You obviously aren't also aware that many phones nowadays don't require a
bell wire anyway, yes they work on a 2 wire circuit & they ring (& notice I
said many not all before you misquote me again)..

Keep digging, eventually you won't be able to reach the keyboard as the hole
will be that deep....

On Wed, 12 Jan 2005 12:47:57 -0000, "kraftee" <kraftee@spamoff&
die.com> strung together this:

panel, or by it.
--

SJW
Please reply to group or use 'usenet' in email subject

On Wed, 12 Jan 2005 20:51:06 -0000, "kraftee" <kraftee@spamoff&
die.com> wrote:

You two will never agree on this. Just for Kraftee attention, my BT
supplied filters (two off) have four contacts IN THE PLUG. That
doesn't mean they are all connected, but contradicts your assertion
above. So why do not the pair of you go read SIN 346, issue 2.5 dated
August 2004, section 7 and there you will find in a note to para (j)
the following:-

"Note that the standard BT PSTN CPE interface is a 3 wire circuit
whereby the bell wire is AC-coupled from line B This bell wire must
EITHER (my emphasis) be filtered by the filter OR (my emphasis again)
left open circuit at the Line Port and recreated at the Telephony Port
of the filter. This may be achieved using a 1.8uf capacitor between
line B (pin 5) and the bell wire (pin 4) at the Telephony Port."

HTH

--
Astro

http://www.rocketcar.net/art/arguing.jpg

astro@wolke7.net wrote:
Which is what happens in the SSFP

OR (my emphasis again)
Which is why the bell wire is not required when using plugin filters (in the
main)..........

"kraftee" <kraftee@spamoff& die.com> wrote in message
news:41e66de9$0$47473$ed2619ec@ptn-nntp-reader02.plus.net...

Lets clarify this. You are saying that on the PSTN side of a microfilter the
bell wire is cut, and that only 2 & 5 are put through - that is have
continiuity between the input of the filter unit and the output. YES OR NO

All the filters I have have all 4 pins through. Even the BT NTE2000's, so
christ knows what you are using. You clearly don't understand something very
basic here. If the telephone on the output side of the filter requires the
bell wire to ring (and many still do) and your imaginary filter did not
provide this the bell would not ring in the phone and the filter would not
comply with basic BT type approval.

Please explain what you don't understand here as you seem to have epic
problems understanding the bell circuit (and for that matter tuned
circuits).

Like I said, If you represent the cream of BT engineers and don't even
understand the f**king basics it's unbelievable.

Ed Start wrote:
On the majority of plug in filters, from the plug to the filter
YES!!!!!!!!!!!!!!!

It is only the few higher quality filters such as the SSFP which BT fit
where there is continuity but with that it is filtered, hence blocking any
RF pickup from the bell circuit.

It is you who has very little grasp of what is actually going on outside
your bubble, not me....