Microfilter / Splitter

As I understand it a microfilter / splitter has two sockets. A standard BT
output for the telephone and an RJ11 socket for the broadband modemor
router.

I would like to use some existing BT extension telephone cable - not
currently used by a telephone extension.

Firstly, am I right in thinking that the RJ11 plug is the same plug that is
normally on the end of a standard modem cable - and also sometimes used to
connect a telephone to a BT wall socket?

If so then would there be any problems if I were to plug into the
microfilter RJ11 socket an RJ11 converter to BT socket and connect to that
the existing telephone extension lead, with a converter back (BT>RJ11) at
the other end for the ADSL modem to plug into?

Would that work ok?

K

In article <(E-Mail Removed)>, Kathy Burke wrote:
> As I understand it a microfilter / splitter has two sockets. A standard BT
> output for the telephone and an RJ11 socket for the broadband modemor
> router.
>
> I would like to use some existing BT extension telephone cable - not
> currently used by a telephone extension.
>
> Firstly, am I right in thinking that the RJ11 plug is the same plug that is
> normally on the end of a standard modem cable - and also sometimes used to
> connect a telephone to a BT wall socket?
>
> If so then would there be any problems if I were to plug into the
> microfilter RJ11 socket an RJ11 converter to BT socket and connect to that
> the existing telephone extension lead, with a converter back (BT>RJ11) at
> the other end for the ADSL modem to plug into?
>
> Would that work ok?

Yes it would work. You could make an ADSL-only extension cable with RJ11
connectors both ends, but I would expect standard telephone extension kits to
be more readily available. If all you want to do is put your ADSL modem at the
end of an extension cable, why don't you just plug a standard extension cable
with a splitter plug into the wall socket *before* the filter? You won't need
to make any special cables, you'll be using standard kit, and everything will
be correctly labelled.

Rod.

Many thanks,


>>If all you want to do is put your ADSL modem at the
> end of an extension cable, why don't you just plug a standard extension
cable
> with a splitter plug into the wall socket *before* the filter? You won't
need
> to make any special cables, you'll be using standard kit, and everything
will
> be correctly labelled. <<

........... because the telephone is by the BT wall socket and the PC,
router, fax ups etc and all other equipment is in a special "machine room"
under the stairs some 20 feet away from the BT socket next to the fax
machine. I'm losing the fax line and having fax2email - and using the fax
line's cable for the run from the BT box to the PC. From what you've said
this should work. Could I substiitute a free RJ45 cable or will the
standard BT extension line do just as well?

K





"Roderick Stewart" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> In article <(E-Mail Removed)>, Kathy Burke wrote:
> > As I understand it a microfilter / splitter has two sockets. A standard
BT
> > output for the telephone and an RJ11 socket for the broadband modemor
> > router.
> >
> > I would like to use some existing BT extension telephone cable - not
> > currently used by a telephone extension.
> >
> > Firstly, am I right in thinking that the RJ11 plug is the same plug that
is
> > normally on the end of a standard modem cable - and also sometimes used
to
> > connect a telephone to a BT wall socket?
> >
> > If so then would there be any problems if I were to plug into the
> > microfilter RJ11 socket an RJ11 converter to BT socket and connect to
that
> > the existing telephone extension lead, with a converter back (BT>RJ11)
at
> > the other end for the ADSL modem to plug into?
> >
> > Would that work ok?
>
> Yes it would work. You could make an ADSL-only extension cable with RJ11
> connectors both ends, but I would expect standard telephone extension kits
to
> be more readily available. If all you want to do is put your ADSL modem at
the
> end of an extension cable, why don't you just plug a standard extension
cable
> with a splitter plug into the wall socket *before* the filter? You won't
need
> to make any special cables, you'll be using standard kit, and everything
will
> be correctly labelled.
>
> Rod.
>

On Tue, 6 Jan 2004 09:47:12 -0000, "Kathy Burke" <leavemealone> wrote:

> From what you've said
>this should work. Could I substiitute a free RJ45 cable or will the
>standard BT extension line do just as well?

RJ45 plug won't fit into an RJ11 socket. BT extension lead should be
OK but be aware that the RJ11 usually carries signal on the middle 2
contacts whereas BT use the next pair out. This need not be an issue
but if you find a phone plugged into the extension off the ADSL socket
doesn't work then that might be your problem.

This would arise if you used a BT plug to RJ11 socket adapter that did
the pin conversion when the conversion had already been done at the
microfilter end.

Phil