The document discusses open source, multi-modal applications using voice. It introduces Adhearsion, an open source telephony framework built on Asterisk that allows building voice applications using Ruby. Adhearsion provides a high level of flexibility and supports building applications that integrate voice, web, and mobile capabilities through various APIs. Examples of applications built with Adhearsion include TwitterVoteReport, which integrates voice, SMS, and the web.

1. Open Source, Multi-Modal Applications with Voice
May 2009

2. Jason Goecke
• Adhearsion core team member
• Email: jason@adhearsion.com
• Twitter: jsgoecke
• Blog: http://blog.goecke.net
• Github: jsgoecke

3. Telephony
• Make and receive phone calls
• Ubiquitous
• Development dominated by enterprise
software vendors

4. Enterprisey
• ‘Standards’
• VXML / CCXML /
XHTML+Voice
• Traditionally expensive

5. Open source enables the Long
Tail
Popularity
Applications

6. TwitterVoteReport
http://twittervotereport.com

7. TwitterVoteReport -
Multimodal Application
#votereport SMS: 66937 1.567.258.VOTE

8. Asterisk
• Open Source Telephony Engine
• Multi-protocol support
• TDM/SIP/IAX2/H323/Jingle/Skype
• Exceptionally Flexible
http://asterisk.org

9. Asterisk

10. Adhearsion ’s Ruby

11. Adhearsion Architecture

12. How Adhearsion Works

13. Adhearsion Dialplan.rb

14. Adhearsion Events.rb

15. Adhearsion Components
APIs
- REST/JSON
- DRb
- STOMP

16. Rhomobile - Write once, deploy
everywhere
 Develop in Ruby & HTML - Native Apps
 http://rhomobile.com
Windows
iPhone BlackBerry Symbian Android
Mobile

17. Tropo - Cloud Telephony
API instead of VXML/CCXML
• Javascript, Groovy, PHP, Python, Ruby
• Working on ProtoTropo for Adhearsion Support...

18. Adhearsion Sandbox
http://adhearsion.com/getting_started

19. Finding more on
Adhearsion...
• Website
• http://adhearsion.com
• Wiki
• http://docs.adhearsion.com
• API Docs
• http://api.adhearsion.com