Yes, I was wrong about the state. 2 were available and 2 were Defined.
What I did is delete all ttys, and then add one by one.
Because Im new in AIX, I used SMIT utility.
Now I have this partially resolved, I have one last question.
The connection is as follows:
GPS sends info from a serial port to a serial port from Server with AIX.
We connect a laptop using hyperterminal to the serial port from the GPS and confirm that the GPS sends information.
It is possible to see if the serial port from the server are receiving the same info from the GPS ?
Thanks again