Wire pair indication: is it visible to ISPs

[pctech]

Still wondering about my sudden jump in attenuation.

On the 2700 it could apparently detect what pair it was connected to, is this info available to ISPs?

[Rik]

Are you talking about the 'Line 1 inner pair' report, Mitch. AFAIK, that just applied to the RJ11 cable.

[pctech]

That is correct.

I thought it was some info passed back froim the DSLAM.

[Polchraine]

Are you talking about the 'Line 1 inner pair' report, Mitch. AFAIK, that just applied to the RJ11 cable.

Correct ... but an RJ11 only has an inner pair and nothing else.

It could also say "Line 2 Middle Pair" or if the capability is there "Line 3 Outer Pair".     Those would not be found using an RJ11 cable but with RJ14 and RJ25 cables - all use the same physical connector but have 2, 4 or 6 contacts fitted.   An RJ11 is 6P(osition)2C(ontact),  RJ14 6P4C and RJ25 6P6C - if you look at what is sold as an RJ11 it is very, very often an RJ14.

Unlikely to have two lines on one socket in the UK but it is common in other countries to have two lines at a socket and dual line phones so it could extend back a long way although DSL would only (normally) be on one.

[Technical Ben]

You reminded me about the "Rj11" etc wiki page. It basically says "all naming schemes went out the window".

[pctech]

Correct ... but an RJ11 only has an inner pair and nothing else.

It could also say "Line 2 Middle Pair" or if the capability is there "Line 3 Outer Pair".     Those would not be found using an RJ11 cable but with RJ14 and RJ25 cables - all use the same physical connector but have 2, 4 or 6 contacts fitted.   An RJ11 is 6P(osition)2C(ontact),  RJ14 6P4C and RJ25 6P6C - if you look at what is sold as an RJ11 it is very, very often an RJ14.

Unlikely to have two lines on one socket in the UK but it is common in other countries to have two lines at a socket and dual line phones so it could extend back a long way although DSL would only (normally) be on one.

Thanks for that explanation Polchraine