[1] Voice Browser Call Control: CCXML Version 1.0 ( ( 版)) <http://www.w3.org/TR/ccxml/>
[2] Multimodal Architecture and Interfaces () <https://www.w3.org/TR/2012/REC-mmi-arch-20121025/>
[3] Authoring Applications for the Multimodal Architecture () <https://www.w3.org/TR/2008/NOTE-mmi-auth-20080702/>