99% of the phones in use today have internal rectifiers so they work
fine with reversed polarity. Which is good, since probably 25% of the
phone jacks are wired wrong, and there's also a fairly high percentage
of people using the wrong patch cords. (Computer RJ-11 patch cords are
wired straight-thru, instead of having tip & ring reversed like a
telephone patch cord.)
> I disagree with "it doesn't matter" . One of the wires is called the 'tip'
> wire and the other is the 'ring'