Beyond VoiceXML 2.0

By Dr. James A. Larson and Scott McGlashan
Reprinted by permission from VoiceXML Review

The W3C Voice Browser Working Group reviewed more than 700 requests for change to VoiceXML 1.0. After careful deliberation, many of these were adopted, resulting in VoiceXML 2.0 which became a recommendation in March 2004. The VBWG is now working on two efforts to make VoiceXML even better.

VoiceXML 2.1 contains features already implemented by speech platform vendors. These include (a) dynamic reference of grammars and scripts, (b) a element to fetch XML data structures and (c) facilities to record utterances during recognition. VoiceXML 2.1 is completely backward compatible with VoiceXML 2.0: all VoiceXML 2.0 applications will run without modification under VoiceXML 2.1. For more details, see

"V3" is the code name for the follow-on to VoiceXML 2.0. Requirements for V3 are derived from deferred VoiceXML 2.0 change requests, the SALT 1.0 and XHTML + Voice 1.0 (X+V) contributions to W3C, as well as the Multimodal Interaction and other W3C Working Groups. V3 will support:

The VBWG will continue to coordinate with the Multimodal Interaction Working Group to guarantee the compatibility of V3 with the multimodal languages