[punjabimundanz]

hi guys
i have blackberry 8310. everything works fine in it except i am not able to make any call to anyone. whenever ikn tried calling its comes with call failed on screen. i can call by voice dialing only. i know i have done something wrong with the options but don't know where. i havce changed sim cards and carrier too but still the same problem , i can receive call but cant make any call. please help me!!!