In the OpenScape 4000 CSTA Administration you can configure an appropriate license option for this application. The Application-ID can be configured in the ECSTA connection options. The Application (ECSTA) identifies itself using an Application-ID.
For connecting a OpenScape 4000 V5 or lower the middleware will be installed (stand alone) on a PC. The middleware is integrated into the OpenScape 4000 V6 (Scenario 1) and does not require a PC installation. The OpenScape 4000 CSTA is the successor of the HiPath CAP Inside V1. The OpenScape 4000 CSTA is a Unify product that allows to connect the ECSTA to the OpenScape 4000.