A few weeks ago I posted a message regarding some problems with my ADSL line. Following the intervention of the AT&T technician, the line is now OK. In an effort to understand the original problem (a mismatch between the Ring and Tip impedance) I measured again such impedances. Now that everything seems to be operating properly, I measured approx. 2,200 ohm (DC) on the Tip and on the Ring line. I know that at the central office (CO) there is a 200 ohm resistance, so each wire resistance should be 2,000 ohm. AT&T told me that they cannot upgrade the speed to my location because I am too far from the CO. I learned that this distance is 18,000 feet.
Armed with these numbers, I tried to calculate how far I am from the CO. And this is what is puzzling. Assuming that I am at 18,000 feet away, the AWG that would give a reading of 2,000 ohm at 18,000 feet is pegged at around
30-31 AWG and that is impossible, because this kind of gauge is far too thin for a phone line. As a matter of fact, I read that the smallest AWG used in the phone line is 24 AWG.Has anybody an idea of what is going on?
TIA
Gene