I look around on the net but still a concrete info on voltages on telephone line is not clearly given. is the following correct?
on-hook: 48V DC(or higher)
on-hook is understood,
what about the following?
ringing: 20Hz AC signal riding on 48V???
off-hook: speech signal 20-30mV on 48V???
on-hook: 48V DC(or higher)
on-hook is understood,
what about the following?
ringing: 20Hz AC signal riding on 48V???
off-hook: speech signal 20-30mV on 48V???