ADSL Connection Problem

Morning all

A bit of a problem with a Sky connection - a fair way from the exchange
(Line attenuation is about 50 and S/N is about 14)

Tried to connect - no luck just shows synching but no connection. Router
is plugged into what passes as the BT Master socket.

Unplugged all telephones (3) and sky box
Result - connects at 2048 which is what is expected.

Started plugging equipment back into the sockets (note that upstairs
socket is hard wired to BT Master which is not a NTE5? and there is a
further daisy chain on to the sky box)

All went well until a particular phone was plugged in at which point the
ADSL connection dropped. Phone is unpowered ie only plug from/to it is
the one to the socket.

Caused the same problem irrespective of which socket it is plugged -
upstairs or downstairs. All works okay with everything else plugged back in.

Any ideas (apart from the obvious of junking phone!)

TIA

Alan


AlanF

"AlanF" <(E-Mail Removed)> wrote in message
newssaBi.4563$(E-Mail Removed) k...
> Morning all
>
> A bit of a problem with a Sky connection - a fair way from the exchange
> (Line attenuation is about 50 and S/N is about 14)
>
> Tried to connect - no luck just shows synching but no connection. Router
> is plugged into what passes as the BT Master socket.
>
> Unplugged all telephones (3) and sky box
> Result - connects at 2048 which is what is expected.
>
> Started plugging equipment back into the sockets (note that upstairs
> socket is hard wired to BT Master which is not a NTE5? and there is a
> further daisy chain on to the sky box)
>
> All went well until a particular phone was plugged in at which point the
> ADSL connection dropped. Phone is unpowered ie only plug from/to it is the
> one to the socket.
>
> Caused the same problem irrespective of which socket it is plugged -
> upstairs or downstairs. All works okay with everything else plugged back
> in.
>
> Any ideas (apart from the obvious of junking phone!)

You are using one of the supplied filters on the phone?

On Wed, 29 Aug 2007 08:51:47 GMT, AlanF <(E-Mail Removed)> mused:

>Morning all
>
>A bit of a problem with a Sky connection - a fair way from the exchange
>(Line attenuation is about 50 and S/N is about 14)
>
>Tried to connect - no luck just shows synching but no connection. Router
>is plugged into what passes as the BT Master socket.
>
>Unplugged all telephones (3) and sky box
>Result - connects at 2048 which is what is expected.
>
>Started plugging equipment back into the sockets (note that upstairs
>socket is hard wired to BT Master which is not a NTE5? and there is a
>further daisy chain on to the sky box)
>
>All went well until a particular phone was plugged in at which point the
> ADSL connection dropped. Phone is unpowered ie only plug from/to it is
>the one to the socket.
>
>Caused the same problem irrespective of which socket it is plugged -
>upstairs or downstairs. All works okay with everything else plugged back in.
>
>Any ideas (apart from the obvious of junking phone!)
>
Buy 4 filters?
--
Regards,
Stuart.

Lurch wrote:
> On Wed, 29 Aug 2007 08:51:47 GMT, AlanF <(E-Mail Removed)> mused:
>
>> Morning all
>>
>> A bit of a problem with a Sky connection - a fair way from the exchange
>> (Line attenuation is about 50 and S/N is about 14)
>>
>> Tried to connect - no luck just shows synching but no connection. Router
>> is plugged into what passes as the BT Master socket.
>>
>> Unplugged all telephones (3) and sky box
>> Result - connects at 2048 which is what is expected.
>>
>> Started plugging equipment back into the sockets (note that upstairs
>> socket is hard wired to BT Master which is not a NTE5? and there is a
>> further daisy chain on to the sky box)
>>
>> All went well until a particular phone was plugged in at which point the
>> ADSL connection dropped. Phone is unpowered ie only plug from/to it is
>> the one to the socket.
>>
>> Caused the same problem irrespective of which socket it is plugged -
>> upstairs or downstairs. All works okay with everything else plugged back in.
>>
>> Any ideas (apart from the obvious of junking phone!)
>>
> Buy 4 filters?

It is no doubt ignorance on my part but I thought the purpose of the
ADSL filters was to remove the ADSL signal from the telephone output (ie
to prevent distortion in the sound etc on the telephone line).

Our problem appears to be the reverse in that plugging in a phone kills
the ADSL!

Cheers

A

"AlanF" <(E-Mail Removed)> wrote in message
news:UctBi.5135$(E-Mail Removed) k...
> Lurch wrote:
>> On Wed, 29 Aug 2007 08:51:47 GMT, AlanF <(E-Mail Removed)> mused:
>>
>>> Morning all
>>>
>>> A bit of a problem with a Sky connection - a fair way from the exchange
>>> (Line attenuation is about 50 and S/N is about 14)
>>>
>>> Tried to connect - no luck just shows synching but no connection. Router
>>> is plugged into what passes as the BT Master socket.
>>>
>>> Unplugged all telephones (3) and sky box
>>> Result - connects at 2048 which is what is expected.
>>>
>>> Started plugging equipment back into the sockets (note that upstairs
>>> socket is hard wired to BT Master which is not a NTE5? and there is a
>>> further daisy chain on to the sky box)
>>>
>>> All went well until a particular phone was plugged in at which point the
>>> ADSL connection dropped. Phone is unpowered ie only plug from/to it is
>>> the one to the socket.
>>>
>>> Caused the same problem irrespective of which socket it is plugged -
>>> upstairs or downstairs. All works okay with everything else plugged back
>>> in.
>>>
>>> Any ideas (apart from the obvious of junking phone!)
>>>
>> Buy 4 filters?
>
> It is no doubt ignorance on my part but I thought the purpose of the ADSL
> filters was to remove the ADSL signal from the telephone output (ie to
> prevent distortion in the sound etc on the telephone line).

That is a popular but wrong view.
The ADSL signal is radio frequency and your phones already have to reject it
as it can be picked up on the lines from radio broadcast stations.

The filters are there to stop the phones loading the line and changing its
characteristics.. this causes disruption to the ADSL signal and you lose
connectivity while it retrains.

>
> Our problem appears to be the reverse in that plugging in a phone kills
> the ADSL!

Which is what is expected if it doesn't have a filter, in fact it may happen
with a filter but it should only be the once when you plug it in (or unplug
it) without the filter it can happen every time the phone rings or you make
a call.

> That is a popular but wrong view.
> The ADSL signal is radio frequency and your phones already have to
> reject it as it can be picked up on the lines from radio broadcast
> stations.
>
> The filters are there to stop the phones loading the line and changing
> its characteristics.. this causes disruption to the ADSL signal and you
> lose connectivity while it retrains.
>
>>
>> Our problem appears to be the reverse in that plugging in a phone
>> kills the ADSL!
>
> Which is what is expected if it doesn't have a filter, in fact it may
> happen with a filter but it should only be the once when you plug it in
> (or unplug it) without the filter it can happen every time the phone
> rings or you make a call.

Thanks for this - shall give that a whirl

A

AlanF, in article <CvGBi.5603$c_1.3882
@text.news.blueyonder.co.uk>, says...

>>
>>>
>>> Our problem appears to be the reverse in that plugging in a phone
>>> kills the ADSL!
>>
>> Which is what is expected if it doesn't have a filter, in fact it may
>> happen with a filter but it should only be the once when you plug it in
>> (or unplug it) without the filter it can happen every time the phone
>> rings or you make a call.
>
>Thanks for this - shall give that a whirl

Yes - NEVER plug a telephone or any other voice equipment
(Sky, FAX, analog modem, etc.) into a plain, unfiltered BT
socket. The purpose of the filter is to hide the telephone
equipment and phone-carrying wires from the ADSL-carrying
wires.

And don't forget that if you are using more than, say, 3
filters to provide this isolation, then their combined load
can impact the ADSL performance. If you need more filters,
you should look at using a single master socket faceplate
filter to remove all the phone-only wiring from the combined
ADSL-plus-phone wiring at the earliest point. You should
ensure the unfiltered home wiring is as short as possible and
*only* going to your ADSL modem/router, with nothing else
(e.g. the pin-3 ring wire) in the cable.

--
JohnW.
Replace the obvious with co.uk in 2 places to mail me.