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Developing with VoiceXML Building a Video Conference Application
Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VoiceXML – What is it? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Developing an Application with VoiceXML ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Video Conferencing Application ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Video Conference Application - Goals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Video Conference – System Architecture Video Conference Application Video-Enabled Media Server SIP SIP SIP SIP, NETANN, VoiceXML RTP RTP RTP
Major Component Responsibilities ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Basic Call Flow – SIP & VoiceXML 1. SIP INVITE validate.cgi?phone=5551212&pin=1234 Video Conference Application Refer-To: sip:conf-1@MS 11. SIP 200 OK 3. HTTP GET 4. SIP 200 OK 5. SIP 200 OK 2. SIP INVITE voicexml=http://as/askpin.vxml 6. HTTP POST 10. SIP reINVITE 7. SIP REFER 8. SIP INVITE sip:conf-1@MS 9. SIP 200 OK
Video Conference Application Software ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Video-enabled Media Server ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Mobicents – a Telecom Framework ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Mobicents - Internals
Video Conference Application –  Software Components
IVR Service ,[object Object],[object Object],[object Object],[object Object],[object Object]
IVR Service - API ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VoiceXML – Using video extensions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Muting a participant using RFC3264 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Manual Control of the Video Feed ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Putting it all Together ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Developing with VoiceXML Building a Video Conference Application

  • 1.  
  • 2. Developing with VoiceXML Building a Video Conference Application
  • 3.
  • 4.
  • 5.
  • 6.
  • 7.
  • 8. Video Conference – System Architecture Video Conference Application Video-Enabled Media Server SIP SIP SIP SIP, NETANN, VoiceXML RTP RTP RTP
  • 9.
  • 10. Basic Call Flow – SIP & VoiceXML 1. SIP INVITE validate.cgi?phone=5551212&pin=1234 Video Conference Application Refer-To: sip:conf-1@MS 11. SIP 200 OK 3. HTTP GET 4. SIP 200 OK 5. SIP 200 OK 2. SIP INVITE voicexml=http://as/askpin.vxml 6. HTTP POST 10. SIP reINVITE 7. SIP REFER 8. SIP INVITE sip:conf-1@MS 9. SIP 200 OK
  • 11.
  • 12.
  • 13.
  • 15. Video Conference Application – Software Components
  • 16.
  • 17.
  • 18.
  • 19.
  • 20.
  • 21.

Notas do Editor

  1. Discuss role of each component: Video Conference Application implements the business logic: PIN number validation, control of the conference mode Video phone, mobile phone, PC: establish call with conference application, transmit and receive audio/video to/from media server Media server: performs audio mixing, muting participants, video switching or mixing Discuss protocols: SIP for signalling RTP for media. There are two separate RTP streams per video phone: one for audio and one for video
  2. Note that sending an SDP with “a=recvonly” to the participant device is not secure: there is no way to know if the participant device will comply.