Hello LF Group,

it is interesting, that if you search an Internet search machine for
"telephone ringing voltage" you might end up at another ham radio operator.
For those of you who would like to know more about the (analog) world of
the telephone network, there is an article unter
http://www.egyed.com/phonework.html, written by Julian Macassey, N6ARE.

Best 73

Geri, DK8KW (W1KW)