The VoiceXML Gateway
The VoiceXML gateway, or voice portal, serves as the heart of any VoiceXML-enabling network. Figure 1 illustrates its component architecture. Through the portal, VoiceXML applications gain access to the users of telephony devices while providing users with text-to-speech, speech recognition, media resources, and, often, access to the Internet. Further information on the telephony aspects of the VoiceXML portal will be provided in the discussion on telephony resources. For now, we'll discuss the speech-processing features of a portal, which help to truly define a user's experience when interacting with the portal.
Figure 1 The voice portal component architecture.