Interesting (again) , I've never seen the line that says 'Press any key to continue...' , when using telnet command. After issuing the command, it's either connect or throwing the error message that it can't connect. I guess we can skip this part for now as it seems Ensight can reach server via port 2325.
For the "ensight_enterprise" license feature, this could be an 'add-on' license. Basically, all ANSYS evaluation/temp licenses are 'add-on' type. You can install one on top of another to add them up.