IETF Publishes Multimodal Synchronization Internet Draft

IBM and Motorola recently submitted an Internet Draft to the IETF defining a protocol called "Distributed Multimodal Synchronization Protocol" (DMSP). This is something folks interested in multimodal interfaces are going to want to take a look at:

http://www.ietf.org/internet-drafts/draft-engelsma-dmsp-00.txt

In a nutshell, the protocol enables multimodal interactions on a mobile device by synchronizing a GUI application running on the mobile device with a remote VoiceXML interpreter. The protocol seems to assume the GUI application is an XHTML browser and the presentation markup being rendered is XHTML+Voice (a multimodal markup proposed by IBM/Motorola/Opera) but that doesn't appear to be a requirement.