Voice Browser: Status
  - Describe potential dialogue with system: VoiceXML
- Control speech generation: Speech Synthesis Markup Language
    
      - text2speech
- recorded audio
 
- Describe legal user responses: Speech Grammar
- Process user input: Semantic Interpretation
- Call control: Markup for call screening, call waiting, call transfer,
    ...
- More info: Max Froumentin, Dave Raggett