I looked in Compatibility Matrix for Unity Express and found that Unity Express 7.4.1 and Callmanager 8.5.1 wll work together.
Now I upgraded Unity Express to version 7.4.1. I read the CTI-ports via Unity Web GUI from CUCM and it found right the ports.
But in CUCM the ports doesnt register with unity express.
What could I do to register the ports? The jtapi user already associated with the ports and I also reset the password t both systems.
Is there a trace I could switch on for port registration?