[Gllug] ADSL on BT phone wires

[Andy Farnsworth]

Russell Howe wrote:
> On Wed, Aug 16, 2006 at 05:44:34AM +0100, Christopher Hunter wrote:
>   
>> On Tuesday 15 Aug 2006 17:05, Russell Howe wrote:
>>
>>     
>>> Does that mean it matters not whether the A wire from the exchange is
>>> wired to terminal 2 or 5, and similarly for the B wire?
>>>       
>> The polarity of the incoming pair (from the street) doesn't matter at all.  
>> There is supposed to be a "right" way 'round, but if you examine 20 BT 
>> installations, you'll find roughly 10 one way, and 10 the other!
>>     
>
> Glad to hear it (no need to bother pulling those master sockets apart
> which I wired up :)
>
>   
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?

Andy
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