I would like to capture and decode the ADSL traffic going on between my modem to the CO equipment.
I am thinking of a setup similar to the one shown in this paper, but it seems the necessary hardware is totally out of my reach.
Alternatively maybe some high impedance tap to plug on some ADSL chipsets evaluation boards to do the hard job of demodulating etc ?
What would be the most cost effective option to go for ? Can someone suggest some simple schematics and low cost equipment that would do ? The capture needs not to be real time, and should be capable to see the exchange in both directions.