[AusNOG] ADSL2+ line sync data

[Paul Brooks]

On 17/09/2013 1:50 AM, Matthew Moyle-Croft wrote:
> Bullish about VDSL2 in Australia -
>
> http://mmc.com.au/pub/DodgyPhoneLine2.jpg
> http://mmc.com.au/pub/DodgyPhoneLine.jpg
>
> Enjoy.

...and then see "Skin Effect" (http://www.allaboutcircuits.com/vol_2/chpt_3/6.html).
At 10 MHz, the Skin Effect depth is a channel of depth 0.02mm - that is, only a ring
of the outer 10% of the copper wire actually carries any signal at 10 MHz, even
thinner for higher frequencies.
Precisely where surface corrosion first starts to pit and erode the conductor.

Enjoy.