Hi all!
Sorry my english!
I need a circuit to monitoring the use of the phone: in use (off-hook), not use (on-hook). Only this 2 state. And, the circuit need to send a sinal like "1" or "0" to PC's serial.
Do I need use the MAX232 to make a interface with PC's serial? How?
Thx!!
Sorry my english!
I need a circuit to monitoring the use of the phone: in use (off-hook), not use (on-hook). Only this 2 state. And, the circuit need to send a sinal like "1" or "0" to PC's serial.
Do I need use the MAX232 to make a interface with PC's serial? How?
Thx!!