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AJAX\'s Impact on Telecom
AJAX
Impact on Telecom
By: Jose de Castro
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 quot;flickerquot;

• 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 quot;flickerquot;

• 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

               Scor   e!”
       Demo: “
10




Demo Overview
• What did we cover?
  – 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

                                                     t   to us”
                                               portan
                                     s   are im
                             r click
                 Demo : “You




       * Thanks to the ITP Program at NYU for the idea: http://itp.nyu.edu/itp/
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

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AJAX\'s Impact on Telecom

  • 2. AJAX Impact on Telecom By: Jose de Castro
  • 3. 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. 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 quot;flickerquot; • Disadvantages – Applications become more chatty – Harder to develop – Breaks the back button – Impacts “bookmarkability”
  • 5. 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 quot;flickerquot; • Disadvantages – Applications become more chatty – Harder to develop – Breaks the back button – Impacts “bookmarkability”
  • 6. 6 Are people doing this today?
  • 7. 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. 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. 9 Demo Scor e!” Demo: “
  • 10. 10 Demo Overview • What did we cover? – 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. 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. 12 Demo t to us” portan s are im r click Demo : “You * Thanks to the ITP Program at NYU for the idea: http://itp.nyu.edu/itp/
  • 13. 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. 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. 15 Social Impact of AJAX • Service Oriented Architectures (SOA) • Mass adoption Open Standards • Free services funded by advertising • Faster ECMAScript Engines!!!