My family's first telephone. A magneto crank type.
My Dad took me to our town's telephone exchange, to watch, the two operators operate the telephone exchange. my aunt, Dad's sister, was one of the operators.
there were no private lines at that time, and the numbers were three digits. ours was W-97.
My Dad operated his own electrical contracting business, out of our home. Our party line, was shared with a family that had several girls that, gossiped for long periods of time. I remember Dad's first, few, polite, requests, for the use of the line, to make a business call, was totally ignored by those gossiping girls, My Dad used a unique method to acquire the line. He put the opening of the receiver unit, of our phone over the mouthpiece of our phone, which caused a deafening shriek, in the earpiece of the gossiping girl's phone. As I remember, it only took a few of those treatments to alleviate the problem.
Pardon my long winded story, of long ago.