[Gllug] ADSL on BT phone wires

[Chris Bell]

On Wed 09 Aug, charles wrote:
> 
> Chris,
> 
> You do have a definite answer from someone who knows.
> 
> Charles :-)
> An ex bt engineer
> 
> ----- Original Message ----- 
> From: "Chris Bell" <chrisbell at overview.demon.co.uk>
> To: "Greater London Linux User Group" <gllug at gllug.org.uk>
> Sent: Wednesday, August 09, 2006 12:14 PM
> Subject: Re: [Gllug] ADSL on BT phone wires
> 
> 
> > On Wed 09 Aug, charles wrote:
> > >
> > > If adsl is working at one end of the extension and not the other end( do
> you
> > > mean another extension?) then the fault is internal.
> > >
> > > Forget the exchange and check the wiring at the other end.
> > >
> > > Charles :-)
> > >
> > >
> >    I was not involved, the person who fixed the fault claimed that it was
> > done by reversing the connections at one end of the extension, I think it
> > was just a faulty connection that he made the week before, but it did
> raise
> > the possibility that ADSL might be polarity sensitive. I have not seen any
> > mention of this possibility before, but would like to get a definitive
> > answer from someone who knows.
> >
> > -- 

   Agreed there was a fault in the local wiring, but the fact that it was
cured by a reluctant (off-duty current) engineer re-making the connections
on a call-back did not totally convince me that the ADSL is polarity
sensitive, especially when it worked at the incoming termination but not 2
metres away on the other end of his extension patch cable via a multi-pair.
It could either have been an original misplaced wire or a faulty IDC.


-- 
Chris Bell

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