If the Java and VoiceXML environment routes a call (as specified by the NumToApp mapping) to a Java or VoiceXML application, the Java and VoiceXML environment will automatically answer the call before handing it on to the application.
If you intend to run state table applications as well as VoiceXML, Java, or CCXML applications, you need to consider how these state tables and Java applications operate before changing the way in which incoming calls are handled. Your existing state table applications probably expect to receive calls in the ANSWERED state. If you modify the Incoming_Call state table to accommodate CCXML, you must also modify the state table applications that expect to receive calls in the ANSWERED state so that they now answer calls themselves.