I'm curious if 1A2 was used in countries that had different ring cadences, like the double-ring popular in Europe and such, and if so, were there special interrupters in the KSUs to regenerate that same cadence?
Since 1a2 regenerates central office ringing with the interrupter's gears+micro switches, just wondering if there were special variants of the interrupters for Europe. Or perhaps one could change out a few gears in the stock interrupters for doing special ringing, like the double-ring thing (400 ms on, 200 ms off, 400 ms on, 2000 ms off).
One of the folks who purchased a few of my "single board KSU"s is located in a country where the CO supplies the double-ring. I was going to supply a software mod that handles fixed ringing, but was going to use the north american single ring cadence (2/4, or I actually found 1/3 to be more to my taste), but wasn't sure if 1A2 supported other kinds of rings.
