[Gllug] ADSL on BT phone wires

[Christopher Hunter]

On Wednesday 16 Aug 2006 13:34, Andy Farnsworth wrote:

> Interestingly enough, I was having telephone problems last month (i.e.
> PSTN line didn't work and Internet Connection didn't work) however, my
> DSL modem was telling me that it had successfully Synced with the DSL
> signal on the line.  If I unhooked the line, it told me no signal and
> when I reconnnected it, it indicated that the signal was back.  When BT
> finally fixed it, they indicated that one wire of my pair had broken,
> but the other wire was intact.  The tech then indicated that since the
> DSL modem has it's own ground, one wire is all that was necessary for
> the DSL rather than two.  Anyone know if this is just some tech making
> it up as he went along or what?

The answer is (alas) "it depends".  You might be close enough to the exchange 
so that the loss via the ground is low enough to provide one half of the 
circuit.  It would be high resistance, but transmission might be possible.

Chris 

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