I'm going to investigate a problem with a friend's broadband connection
tonight, but thought it would be worth sounding out the collective
wisdom here on what the likely causes of the fault were.

The friends moved house recently and signed up with Sky for their broadband.
I installed the modem/router for them on the house's one phone socket and
it all worked, using the sky-supplied filter.

They really wanted the router elsewhere, as the place where the phone
socket was is somewhat inconvenient. Yesterday, they got someone to
install a telephone extension and moved the router + filters to that
extension. Their internet connection hasn't worked since. I've checked
with them that both phone sockets are working and that the router
still powers up. I'm going round there to investigate further.

Possible causes I can think of a

(1) They haven't got a filter on both the sockets, or else they've
connected the router to the filter incorrectly.

(2) The router has failed in some way after being moved

(3) There's something wrong with the way the extension has been
wired up.

(1) I can check easily. (2) I can also check, by moving it back
to the original socket, and also by connecting to its local management
interface. (3) I'm not so sure about. If I rule out the other causes,
then there must be something wrong with the way the extension has
been wired in, but it's not clear to me what to look for, nor
what to tell them needs changing.

Any thoughts ?

(3) There's something wrong with the way the extension has been
* * *wired up.

Being wired up wrong is not really likely. The phone needs both the A
& B cables to be connected correctly in order for it to work. By
working that would mean being able to dial out and being able to
receive calls, not just the dial tone.
My guess would be noise. The new extension cable is going along a
router which is long, or is being exposed to Noise from things like
TV, Motor, Lighting (CFL's), running very close to power cables.
Another possibility is that the cable being used is Flat, so therefore
is inducing more noise.
Either way, if this is a noise related issue, then even if you get the
extension to work, the chances are that it will give you a lower speed
anyway.
Of course, I could be totally wrong. And the router may have had it.
Another thing to maybe check is how tight the connections the the
joints are. If you have the proper IDC tool just give them a better
push in, where-ever the source is of the extension.

Kevin Ashley wrote:
I'm going to investigate a problem with a friend's broadband connection
tonight, but thought it would be worth sounding out the collective
wisdom here on what the likely causes of the fault were.

The friends moved house recently and signed up with Sky for their
broadband.
I installed the modem/router for them on the house's one phone socket and
it all worked, using the sky-supplied filter.

They really wanted the router elsewhere, as the place where the phone
socket was is somewhat inconvenient. Yesterday, they got someone to
install a telephone extension and moved the router + filters to that
extension. Their internet connection hasn't worked since. I've checked
with them that both phone sockets are working and that the router
still powers up. I'm going round there to investigate further.

Possible causes I can think of a

(1) They haven't got a filter on both the sockets, or else they've
connected the router to the filter incorrectly.

(2) The router has failed in some way after being moved

(3) There's something wrong with the way the extension has been
wired up.

(1) I can check easily. (2) I can also check, by moving it back
to the original socket, and also by connecting to its local management
interface. (3) I'm not so sure about. If I rule out the other causes,
then there must be something wrong with the way the extension has
been wired in, but it's not clear to me what to look for, nor
what to tell them needs changing.

Any thoughts ?

Wiring and extension is a matter of connecting three wires. That means
that there are probably about 8 ways to get it wrong..

simply try all combinations till you find the one that works, or look up
the correct way to do it online.

Sounds like the problem I asked here about with my daughter extension. It
was the type of extension cable that cured it. Round vs flat.


--
Regards,
David

Please reply to News Group

On Tue, 19 Aug 2008 12:00:10 +0100, Kevin Ashley wrote:

Possible causes I can think of a

(1) They haven't got a filter on both the sockets, or else they've
connected the router to the filter incorrectly.

(2) The router has failed in some way after being moved

(3) There's something wrong with the way the extension has been
wired up.

The most obvious thing to look for is that the extension isn't just
plugged into the telephone socket of the filter at the master socket.
That will filter out the adsl signal.

The second thing is the type of cable used. If it's standard flat
telephone cable even when you do get an adsl signal to the extension
socket the speed is likely to be lower than it was at the master
socket. It really needs unshielded twisted pair to carry the ADSL
signal and the ring wire (pin 3?) should not be connected.

I've got my computer away from the master socket but I left the
modem/router at the master socket and ran UTP cat 5e cable from the
router port to the 'office'.

--
Regards - Rodney Pont
The from address exists but is mostly dumped,
please send any emails to the address below
e-mail ngpsm4 (at) infohitsystems (dot) ltd (dot) uk

Kevin Ashley wrote:
I'm going to investigate a problem with a friend's broadband connection
tonight, but thought it would be worth sounding out the collective
wisdom here on what the likely causes of the fault were.

The friends moved house recently and signed up with Sky for their
broadband.
I installed the modem/router for them on the house's one phone socket and
it all worked, using the sky-supplied filter.

They really wanted the router elsewhere, as the place where the phone
socket was is somewhat inconvenient. Yesterday, they got someone to
install a telephone extension and moved the router + filters to that
extension. Their internet connection hasn't worked since. I've checked
with them that both phone sockets are working and that the router
still powers up. I'm going round there to investigate further.

Possible causes I can think of a

(1) They haven't got a filter on both the sockets, or else they've
connected the router to the filter incorrectly.

(2) The router has failed in some way after being moved

(3) There's something wrong with the way the extension has been
wired up.

(1) I can check easily. (2) I can also check, by moving it back
to the original socket, and also by connecting to its local management
interface. (3) I'm not so sure about. If I rule out the other causes,
then there must be something wrong with the way the extension has
been wired in, but it's not clear to me what to look for, nor
what to tell them needs changing.

Any thoughts ?

For what they cost (just about anywhere - pound shops etc) - just take
another extension with you ... should prove the point. Its not
ridiculously long is it ? Never had trouble with cheapo ones of about 5
or 10m ...

Kevin Ashley wrote:

Any thoughts ?

Oh yeah - and check that they haven't used a 2-1 BT splitter, then
connected a handset/something into the other bit of the splitter without
a filter ....

Rodney Pont wrote:
On Tue, 19 Aug 2008 12:00:10 +0100, Kevin Ashley wrote:


Possible causes I can think of a

(1) They haven't got a filter on both the sockets, or else they've
connected the router to the filter incorrectly.

(2) The router has failed in some way after being moved

(3) There's something wrong with the way the extension has been
wired up.


The most obvious thing to look for is that the extension isn't just
plugged into the telephone socket of the filter at the master socket.
That will filter out the adsl signal.

The second thing is the type of cable used. If it's standard flat
telephone cable even when you do get an adsl signal to the extension
socket the speed is likely to be lower than it was at the master
socket. It really needs unshielded twisted pair to carry the ADSL
signal and the ring wire (pin 3?) should not be connected.

I've got my computer away from the master socket but I left the
modem/router at the master socket and ran UTP cat 5e cable from the
router port to the 'office'.


Thanks for this and all the other replies so far. Some I've already
thought of (such as the connection being made on the wrong side
of the filter) but others, such as the cable type, I haven't.

The extension runs from a socket on the ground floor to a room
on the first floor, via a circuitous route probably, so it will be
a fair number of meters and therefore more prone to picking up
noise. The guy who installed it is reportedly knowledgeable, and
knew that the extension was going to have an ADSL modem attached,
so he *should* have used twisted-pair cable. But we'll see.

I'll investigate further and report back tomorrow. Thanks
again for the suggestions so far.

On Tue, 19 Aug 2008 12:00:10 +0100, Kevin Ashley
wrote:

I'm going to investigate a problem with a friend's broadband connection
tonight, but thought it would be worth sounding out the collective
wisdom here on what the likely causes of the fault were.

The friends moved house recently and signed up with Sky for their broadband.
I installed the modem/router for them on the house's one phone socket and
it all worked, using the sky-supplied filter.

They really wanted the router elsewhere, as the place where the phone
socket was is somewhat inconvenient. Yesterday, they got someone to
install a telephone extension and moved the router + filters to that
extension. Their internet connection hasn't worked since. I've checked
with them that both phone sockets are working and that the router
still powers up. I'm going round there to investigate further.

Possible causes I can think of a

(1) They haven't got a filter on both the sockets, or else they've
connected the router to the filter incorrectly.

(2) The router has failed in some way after being moved

(3) There's something wrong with the way the extension has been
wired up.

(1) I can check easily. (2) I can also check, by moving it back
to the original socket, and also by connecting to its local management
interface. (3) I'm not so sure about. If I rule out the other causes,
then there must be something wrong with the way the extension has
been wired in, but it's not clear to me what to look for, nor
what to tell them needs changing.

Any thoughts ?

How about putting the router back to where it was when it worked and
get your friend a wireless card for his PC?

--
Cheers

Peter

"Petert" wrote in message
...
On Tue, 19 Aug 2008 12:00:10 +0100, Kevin Ashley
wrote:

How about putting the router back to where it was when it worked and
get your friend a wireless card for his PC?

Or a pair of Homehub mains-wiring devices if wireless reception isn't good
enough.