Last one I worked with was "pre-n". Supposedly basically "n" without the almighty official blessing (which process apparently takes about 12 years, IIRC).
I finally gave up, called our local provider (also local phone co. here, so we get additional units for free) and had them hardwire a line for Mrs. Pacman's computer.
Of course, she used it like crazy...for about a week. I don't think she has touched that computer in about a year since.