Is VoiceXML powerful enough to write full-fledged voice applications?
Yes, absolutely! Every one of the applications running on 1-800-555-TELL was written on the Tellme Platform using nothing but VoiceXML and JavaScript. They represent the most extensive set of voice applications ever built. Another way to think about it is to consider that a voice application is nothing but a Web application with a speech-driven interface. Just like Web applications, voice applications can perform hard-core data processing, integration of disparate data sources and legacy systems, and complex user interactions.