In the process of upgrading, the Computer Telephony Integration (CTI) point becomes disconnected and does not connect.
Application plug-ins extend the functionality of Cisco CallManager. In particular, the Java Telephony Application Programming Interface (JTAPI) plug-in allows a computer to host applications that access Cisco CallManager through JTAPI.
To resolve this issue, perform these steps:
If you have upgraded to Cisco CallManager 3.3, you must upgrade the JTAPI client software on any application server or client workstation on which JTAPI applications are installed.
If you do not upgrade the JTAPI client, your application fails to initialize.