VoiceXML
Dosed by Baskar P – M & E Team (from MphasiS Software Services)
What is VoiceXML?
VoiceXML, Voice Extensible Markup Language is designed for creating audio
dialogs that feature synthesized speech, digitized audio, recognition of spoken
and DTMF key input, recording of spoken input, telephony, and mixed initiative
conversations. Its major goal is to bring the advantages of Web-based
development and content delivery to interactive voice response applications.
How does it work?
Just as HTML documents are interpreted by a visual web browser, VoiceXML
documents are interpreted by a voice browser. A common architecture is to
deploy banks of voice browsers attached to the Public Switched Telephone
Network (PSTN) so that users can use a telephone to interact with voice
applications.
VoiceXML interpreter fits between document server and implementation platform.
A VoiceXML document specifies each interaction dialog to be conducted by a
VoiceXML interpreter. User input affects dialog interpretation and is collected
into requests submitted to a document server. The document server replies with
another VoiceXML document to continue the user's session with other dialogs.
Just as HTML documents are interpreted by a visual web browser, VoiceXML
documents are interpreted by a voice browser.
Following are the Goals of VoiceXML:
Minimizes client/server interactions by specifying multiple interactions per
document.
Shields application authors from low-level and platform-specific details.
Separates user interaction code (in VoiceXML) from service logic (e.g. CGI
scripts).
Promotes service portability across implementation platforms. VoiceXML is a
common language for content providers, tool providers, and platform providers.
Is easy to use for simple interactions, and yet provides language features to
support complex dialogs.
Further References
http://en.wikipedia.org/wiki/VoiceXML
http://www.w3.org/TR/voicexml20/
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