3 ms·
As far as I know, anyone could do busy line interruption in the U.S. with the help of the telephone operator: https://en.wikipedia.org/wiki/Busy_line_interrupt
by michaelhoffman 5y ago
As far as I know, anyone could do busy line interruption in the U.S. with the help of the telephone operator:
https://en.wikipedia.org/wiki/Busy_line_interrupt https://en.wikipedia.org/wiki/Busy_line_interrupt