Hi everybody
I'm just trying to make an "Answering Machine" that works on telephone line. but i have a problom. I can't detect that the caller is disconnected or is still online. when the caller is disconnected, the answering machine should disconnect from line too and make the line "idle". i don't know how can I do this
can anyboddy help me?
I'll be very thankful
I do agree with FvM. The busy tone detection is easiest option. Polarity reversal and the 16Khz tone are sent from the exchange only when a call is matured or in progress. When the called person disconnect the call, a busy tone is heard and it shud be detected.