2. AJAX Impact on Telecom
It’s not just for web sites anymore

3. So what is AJAX? Asynchronous JavaScript and XML
Refers to a programming model in which the user Interface is driven by data instead of “pages”
DOM manipulation is used to update UI components
Sites and applications are more responsive

4. Technical Impact of AJAX on the Web
Advantages
Application skeleton only downloaded once
Can result in significant reduction in bandwidth
Asynchronous requests allow browser to be more responsive
Page transitions are eliminated resulting in less "flicker"
Disadvantages
Applications become more chatty
Harder to develop
Breaks the back button
Impacts “bookmarkability”

5. Technical Impact of AJAX on Telecom
Advantages
Application skeleton only downloaded once
Can result in significant reduction in bandwidth
Asynchronous requests allow browser to be more responsive
Page transitions are eliminated resulting in less "flicker"
Disadvantages
Applications become more chatty
Harder to develop
Breaks the back button
Impacts “bookmarkability”

6. Are people doing this today?

7. Sure, Voice Browsers have needs too!
VoiceXML and CCXML engines are browsers
Governed by the W3C
Based on proven web standards/techniques
Open protocols (HTTP, SSL)
Request-response model
HTTP 1.1 Caching
Intelligent resource pre-fetching

8. VoiceXML Used to create interactive Voice Dialogs
VoiceXML : Speech :: HTML : Web
AJAX-style development via the <data> element
Uses ECMAScript as it's primary scripting language

9. Demo
Demo: “Score!”

10. Demo Overview What did we cover? Wait, but was that asynchronous?
VUI downloaded once per call instead of once per lookup
Scores loaded “on-the-fly” using a custom Web Service
Audio files are cached via standard HTTP caching headers
Wait, but was that asynchronous?
No, VoiceXML is effectively a procedural language
To do true AJAX we need an event/callback model

11. Enter CCXML... A complementary standard to VoiceXML
Completely asynchronous!
Allows interaction with low level signaling (i.e. SIP)
A container for VoiceXML Dialogs
Loves ECMAScript!

12. Demo: “Your clicks are important to us”
* Thanks to the ITP Program at NYU for the idea:

13. Demo Overview What did we cover? Asynchronous event processing
CCXML was able to send and receive messages from an external source
We leveraged several open source JavaScript libraries in a way it’s authors may have never imagined!

14. But don’t stop there! AJAX is not just about performance!
The emergence of AJAX brought on a landslide of innovation that has fundamentally changed the way we approach software delivery (e.g. Software as a Service)
AJAX requires that developers separate their UI from the underlying data; maximizing code reuse
Massive online social networks and countless Internet superstars owe their beginnings to this new development paradigm

15. Social Impact of AJAX Service Oriented Architectures (SOA)
Mass adoption Open Standards
Free services funded by advertising
Faster ECMAScript Engines!!!

16. Q&A