Quote Originally Posted by Rufinus
RS232 output of max i do connect to the pic, but through 22k resistor.
A simple NPN Transistor and two resistors would do here.
(Invert the logic and shift the level to 5V)

Regarding modes - tried both true and inverted, tried different baud rates.
I still think it is the problem of levels.
Find out what level the Phones TX Pin has in Idle state, and what it is in active state.



If you have a good link in mind about serial communication, i would appreciate. Otherwise, gonna google.
Sorry, I don't have any link, but there are some good books, i.e.
"Serial Port Complete" by: Jan Axelson