The Underscore Archives

On 28 May 2008, at 16:08, Amias Channer wrote:

> On Wed, 2008-05-28 at 15:22 +0100, Matt Hamilton wrote:
>> Hi All,
>>    I'm helping my father-in-law wire up an extension for ADSL at
>> home.  He has 'helpfully' already run a cable under the carpet from
>> one end of the bedroom where the master socket is to the extension
>> next door... maybe about 10 metres.  However the cable he has used is
>> not twisted pair, but just the 4-wires-side-by-side telephone wiring
>> that you often get between the phone and the wall.  Anyone know if in
>> practise this will make a difference vs. using cat5?  I mean I'm sure
>> the wires out in the street are probably just bits of old wet string
>> anyways, so shouldn't make much different, but wasn't sure if a 10m
>> run of non-twisted pair cable between the master socket and ADSL
>> modem would be an issue?
>
> It should be easy to tell , just plug the router into the shortest  
> cable
> you have and into the filtered side of the filter then into the master
> socket.
>
> Then power up and read the signal level from the diagnostics page
> then compare with it to the same with the extension cable.

That's the problem, he doesn't have the service yet, so I'm kinda  
second guessing.  I just don't want to go down there and terminate  
the existing cable he put in if there is no chance of it working.

> It shouldn't make much difference if you are near the exchange and
> other conditions are ok but cheap cables that get trodden on can
> break ADSL2 and 2+ connections which are more sensitive. Stay close
> to the master socket. Most problems are caused by old devices that
> seemed ok with adsl 1 but interfere with the version 2 gnomes , use
> filters. filters can die.

Also, I think it is stranded cable, which of course you can't punch  
down properly.  Depending on how much hassle it will be to lay a new  
cable, I might do it anyways, but I think that might mean removing  
all the furniture and pulling a kind sized bed out the room :(

> ADSL2+ uses gnomes (slightly fatter than pixies) to move the data so
> the cable needs to be a little bit chubbier than the old ones . On the
> upside their beards need less cleaning and they are better behaved at
> meal times.

Yeah, but a Daemon could have them anyday ;)
-Matt

-- 
Matt Hamilton                                       matth at netsight.co.uk
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