Can someone please clarify the position with regard to the bell wire
in domestic telephone cabling.

Some web sources imply that it is no longer necessary with modern
phones. Other web sites show each extension connected with three wires
- the third being the bell wire.

I am about to install additional extension sockets - primarily to
allow connections for a Sky digibox and I want to get by on one pair,
if that will work.

Some sites suggest that getting rid of all the bell wires helps
improve one's broadband speed.

Just what is the truth?

Yvonne

In an earlier contribution to this discussion,
Yvonne wrote:

Can someone please clarify the position with regard to the bell wire
in domestic telephone cabling.

Some web sources imply that it is no longer necessary with modern
phones. Other web sites show each extension connected with three wires
- the third being the bell wire.

I am about to install additional extension sockets - primarily to
allow connections for a Sky digibox and I want to get by on one pair,
if that will work.

Some sites suggest that getting rid of all the bell wires helps
improve one's broadband speed.

Just what is the truth?

Yvonne

The truth is that some phones will not ring unless provided with a ring
signal on Pin 3. Some phones (probably most modern ones) have their own ring
capacitor, and will ring quite happily on a 2-wire circuit - with only 2 and
5 connected.

All is not lost though because you can get away with only using 2 wires as
long as you provide a ring capacitor at the point where the phone plugs in.
The easiest way to do this is to use a plug-in ADSL filter, all of which
have ring capacitors on their phone socket. If you're using broadband over
the telephone wire without a faceplate filter on the master socket, you'll
need a plug-in filter on each extension socket anyway. Even if you *are*
using a faceplate filter, it will do no harm to use an additional plug-in
filter for any phones which refuse to ring without one.

And yes, getting rid of the unbalanced bell wire may well improve broadband
speed by reducing noise pick-up.
--
Cheers,
Roger
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On Aug 11, 3:51*pm, Yvonne wrote:
Can someone please clarify the position with regard to the bell wire
in domestic telephone cabling.

Some web sources imply that it is no longer necessary with modern
phones. Other web sites show each extension connected with three wires
- the third being the bell wire.

I am about *to install additional extension sockets - primarily to
allow *connections for a Sky digibox and I want to get by on one pair,
if that will work.

Some sites suggest that getting rid of all the bell wires helps
improve one's broadband speed.

Just what is the truth?

Yvonne

Some extensions are wired in 2 core, some in 3.
3 core extensions will work all phones, but can indeed affect
broadband data.
2 core extensions with no added ring capacitor will work some phones,
not all.
2 core extensions with an added ring capacitor at the end effectievly
recreate the 3rd wire, and work perfectly with all phones, and don't
affect broadband.


NT

"Yvonne" wrote in message
...
Can someone please clarify the position with regard to the bell wire
in domestic telephone cabling.

Some web sources imply that it is no longer necessary with modern
phones. Other web sites show each extension connected with three wires
- the third being the bell wire.

I am about to install additional extension sockets - primarily to
allow connections for a Sky digibox and I want to get by on one pair,
if that will work.

Some sites suggest that getting rid of all the bell wires helps
improve one's broadband speed.

Just what is the truth?

Yvonne

Two wires will be fine in 99.99% of cases - occasionally you will find a
phone that requires a bell wire - however inserting an ADSL filter in the
phone cord will usually solve this. However when you do install your wiring
ensure that you use the correct telephone specification cable (twisted
pair); some people will suggest using CAT5 instead of telephone cable,
that's also fine, - but personally I've always found CAT5 to be a bit
obtrusive in a domestic environment if you can only put it around the
skirting. Some extension kits from the likes of Been & Queued provide a
flat cable that isn't twisted and that can/may play havoc with your
broadband.

The bottom line is that a properly installed phone line and extensions
should not cause problems - but in the case of all deregulated services
there are now lots and lots of bits and pieces for the consumer to use and
they may not all be compatible or of equal quality. Long gone are the days
when the Post Office would test anything new for so long that it was
obsolete by the time it came out to the customer :-)

Peter

Yvonne wrote:

Can someone please

.... dispense with Drivel using bell wire, cheese wire, hatchets or
falling pianos as necessary.

Two wires will be fine in 99.99% of cases - occasionally you will find a
phone that requires a bell wire - however inserting an ADSL filter in the
phone cord will usually solve this. *

In that case would I be safe to assume that if I have an ADSL filter
at the NTE5 master socket ( eg I-plate) it will be OK in 100% of
cases?
Yvonne

In article cff06953-a5f1-4a92-adad-b05431d76834
@r38g2000yqn.googlegroups.com, "Yvonne" wrote:


Two wires will be fine in 99.99% of cases - occasionally you will find a
phone that requires a bell wire - however inserting an ADSL filter in the
phone cord will usually solve this. *

In that case would I be safe to assume that if I have an ADSL filter
at the NTE5 master socket ( eg I-plate) it will be OK in 100% of
cases?
Yvonne

An IPlate is NOT an ADSL filter!. It is designed only to reduce the
level of any interference signal picked up on the "pin-3" ring wire.
Hence, when this is coupled, via the ring capacitor, to one of the
signal pairs, the interference signal will, hopefully, be low enough not
to cause a problem for the ADSL modem.

If you install and ADSL filter in place of the removable faceplate of
the NTE5 master socket, e.g. www.adslnation.com/products/xte2005.php
then installing the pin-3 ring wire in the phone extension cables (and
never in an ADSL carrying extension cable) from the connectors on the
back of the faceplate will be OK in 99.999% of cases.

Even better, If you decide not to install the pin-3 ring wire in the
phone extension cables, then a UK sourced plug-in ADSL filter inserted
into the slave socket used by a non-ringing telephone should restore the
ringing. In this case, this filter isn't doing its normal job of
removing the ADSL signal from getting into the telephones. All it does
is restore the ringing signal on pin-3 of its output socket for the
local telephone.

--
John W
I you really want to mail me, replace the obvious with co.uk twice

In an earlier contribution to this discussion,
Yvonne wrote:

Two wires will be fine in 99.99% of cases - occasionally you will
find a phone that requires a bell wire - however inserting an ADSL
filter in the phone cord will usually solve this.

In that case would I be safe to assume that if I have an ADSL filter
at the NTE5 master socket ( eg I-plate) it will be OK in 100% of
cases?
Yvonne

Not necessarily - and certainly not for the reasons which you assume.

Firstly, an I-Plate *isn't* an ADSL filter per-se - it simply filters the
bell wire. If you're only using 2-conductor extension wiring - with no bell
wire - an I-Plate is pretty much a waste of space. However, because an
I-Plate isn't an ADSL filter, you *still* need plug-in filters at each
extension socket. So *they* will provide you with a ring signal on Pin 3
regardless of whether you have 2-wire or 3-wire extensions.

Now, if you have a *proper* filter at the NTE5 - i.e. a filtered faceplate
which splits the analog and digital signals at the point of entry - you
still have the choice of 2-wire or 3-wire analog extension wiring. You no
longer need plug-in filters to make ADSL work *but*, if using only using 2
wires, you may *still* need one or two plug-in filters to make your
extension phones ring, if you have any without their own ring capacitors.

Sorry that was a bit longer than "yes" or "no"!
--
Cheers,
Roger
______
Email address maintained for newsgroup use only, and not regularly
monitored.. Messages sent to it may not be read for several weeks.
PLEASE REPLY TO NEWSGROUP!