You can ruminate all you want on how you know everything about 1A2 home systems, but I worked on older stuff than that before you were out of diapers.
I have the original Cambell Soup tin cans that I modified to use with metalicized 10 lb. fishing wire and a 1/8 inch reel to reel tape recorder for voice mail. The rotary dial pad was so old it was in Roman numerals. I bet you can't even remember the polarity on that system.
<GRIN> Bunnie