I use 4MHz resonator. i did use the same type of resonator before when i did a serial comm project between 2 remote PIC 16F84 at 1200baud.

In Hyperterminal, i tried 300 baud, 1200 baud and 2400 baud. All working fine. The only difference i noticed with this baud rates is the speed and it is obvious when i type AT&V.
A modem should detect the baud rate automatical isn't ?

mychangl