A seminar by Ramesh Kumar Raju S CSSE 07121A1547

Contents 1. Introduction 2. Voice Portal Technology 3. Voice XML 4. Voice Portal services 5. Advantages 6. Disadvantages 7. Conclusion 8. References

Introduction Definition: Speech enabled access to Web based information A natural language interface to access and retrieve Web content through telephone

Why Voice? Natural speech Medium in communication Hands-free and eyes-free use Easy to remember

What is Portal? A site that functions as a point of access to information on the Internet Many to many in an effective manner

Voice Portal Technology Interaction between Human voice and system Important technology is VUI (Voice User Interface) Evolution of VUI

IVR Interactive Voice Response – Touch tone interface – Mostly uses DTMF(Dual Tone Multi Frequency) – Less effective – Menu barrier

ASR Automatic Speech Recognition – Engine that drives today’s VUI systems – More complex transactions done over phone – No menu barrier – Voice Authentication (no PINs and Passwords)

NGN Next Generation Network World communication traditionally enabled by PSTN network wireless network Data network NGNs interface all three into a common packet infrastructure

NGN services Three types of NGN services 1. Real time and non real-time communication services 2. Content services 3. Transaction services Provides greater control, reliability, security One key NGN service is Voice Portal

The Voice Portal Concept Customer/EmployeeService Provider IBM 201/5.ORCL 33 ABC123 SMITH 4th Road ContentConsumer Accessing your contact list... Stock quotes brought to you by … Your bookmarks are ABC bank …. Welcome to XYZ voice site …. Online address book Bill Andrews Home: Work: Cell: Bill Andrews Home: Work: Cell: Stock quote service Bank call center XYZ web site

Voice XML Voice Extensible Markup Language Began in 1985 Designed for creating audio dialogs Voice web browser attached to PSTN

Evolution of Voice XML

Voice XML Architectural Model

HTML Vs Voice XML

A Voice XML Example Would you like coffee, tea, milk, or nothing? C (computer): Would you like coffee, tea, milk, or nothing? H (human): Orange juice. C: I did not understand what you said. C: Would you like coffee, tea, milk, or nothing? H: Tea C: (continues in document drink2.asp)

Voice Portal Providers

Voice Portal Services News Stocks Weather Driving directions Traffic info Horoscopes Movie reviews Restaurants Travel info Soap opera info Lottery results Currency info Music Sports results Business finder -to-voice Below are some content services typically provided by voice portals.

Advantages: Independent on access device Talk to users in local language Easy to learn and remember Quick, easy and effective

Disadvantages: Information provided is limited compared to visual media Still not popular

Conclusion: Becoming hottest trend in E-Commerce It is the next frontier in convergence Put all kinds of data at customer’s finger tips at any time and any place Combining the power of server technology with telephony interface boards

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