Hi again,

in normal connection;
* RC6/TX -> T2IN AND T2OUT -> PIN2 RXD
* RC7/RX -> R2OUT AND R2IN -> PIN3 TXD

i tried also cross-over connection, but no success ;
* RC6/TX -> T2IN AND T2OUT -> PIN3 TXD
* RC7/RX -> R2OUT AND R2IN -> PIN2 RXD

i tried both connections again but still no success

any idea or suggestion is really appreciated , thanks...