App Interaction Framework Jonathan Rosenberg dynamicsoft

Main Issue: How to Deliver DTMF Current draft makes a new proposal Two separate UI types are recognized –Presentation Capable HTML, WML, VoiceXML –Presentation Free KPML Presentation Capable –Application sends REFER to UA –Refer-To has HTTP URI –URI references the markup Presentation Free –Application sends a SUBSCRIBE to UA –Subscribe body has KPML –NOTIFY contains DTMF

Example KPML Flow

Example HTML Flow

Implications App-Info Header Not Used –No ability to push updated scripts for presentation capable case GRUU is needed in both cases –Needs to be unique for each dialog –Applications authorize any REFER/SUB made to GRUU Applications can establish app sessions at any time Application authentication to client done using normal SIP means App sessions terminate with dialog –For presentation-free, can terminate earlier Solves the forking problem Much simpler overall

Next Steps Consensus on this approach? If so, one more rev and we should be done –KPML needs a rev for alignment as well