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Video Conferencing. An Introduction to the Technology. Carl A. Zaner September 2000. Video Conferencing. Introduction What is Video Conferencing? How is Video Conferencing Used? Where is the Technology Going? Summary What Have We Learned?. Video Conferencing.

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Video Conferencing

An Introduction to the Technology

Carl A. Zaner

September 2000


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Video Conferencing

  • Introduction

  • What is Video Conferencing?

  • How is Video Conferencing Used?

  • Where is the Technology Going?

  • Summary

  • What Have We Learned?


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Video Conferencing

  • What is Video Conferencing?

    • Brief History

      • First Public Introduction at 1964 New York World’s Fair -- AT&T’s VideoPhone® -- “Gee Wiz” Factor – Very Costly

      • Very Little Development Outside the Laboratory for 25 Years -- No Practical Application Foreseen in the Market

      • Widespread Development Ramped-up During Late ‘80s -- Especially within Military Market -- Big Ticket Item

      • Drive to Establish International Interoperability and Standards Forced Market / Vendor Expansion in Late ‘80s

      • Television Studio Production Values Pushed Transmission Clarity and Usability Features


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Video Conferencing

  • What is Video Conferencing?

    • Types of Technologies -- How Does it Work?

      • Analog TV Broadcast Teleconferencing Network Feeds and Radio Frequency Transmission

      • Compressed Digital Teleconferencing Digitized (Coded / Decoded) Circuit-Switched Transmission via Public Switched or Private Telecommunications Networks

      • Broadband Satellite Teleconferencing Wideband Transmission via Transponder Space

      • Internet-based Teleconferencing ‘IP’ Packet-Switched Routing via Switched Networks


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Video Conferencing

  • What is Video Conferencing?

    • ITU's Video Conferencing (Umbrella “H.320”) Standards:

      • H.320 -- Enables Desktop Audio and Video Components to be Shared in Multiple Locations Over ISDN Circuits

      • H.323 -- Allows for Video Conference Transmissions Over LANs (i.e., Ethernet)

      • H.324 -- Provides Ability to Video Conference Over Analog Phone Lines, via 28.8 kbps Modems

      • T.120 -- Provides Desktop Video Conference Collaboration and Document Sharing, via File Transfer Protocol (FTP)


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Video Conferencing

  • How is Video Conferencing Being Used?

    • Traditional Face-to-Face Meetings

      • Point-to-Point

      • Multipoint (Bridging)

    • Workgroup Collaboration

    • Distance Learning

    • Video-on-Demand

    • Telemedicine

    • Telediagnosis

    • Teleconsulting

    • Teletherapy


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Video Conferencing

Applications

Typical Workgroup Conference

Typical Executive Conference


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Video Conferencing

Applications

Typical Workgroup Conference

Typical Desktop Conference


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Video Conferencing

Applications

Roll-about Telemedicine Unit

Roll-about Conferencing Unit


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Video Conferencing

  • Where is Video Conferencing Technology Going?

    • Evolving Applications

    • Maturing of Standards and Quality Fosters Usability

    • Corporate / Public Acceptance

    • Increased Usability Promotes Greater Use

    • Impact on Local Area / Wide Area Networks

    • Increased Use Forces Continuing Network Deployment and Development

    • Growth Forecasts

    • Increased Network Capabilities Encourage Future Enhancements, Features and Functions, which Contribute to Continuing Acceptance and Demand


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Video Conferencing

  • Where is Video Conferencing Technology Going?

  • Growth -- Desktop Conferencing Alone, is Expected to Double Each Year through 2001

* Source: InfoWorld - December 1996


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Video Conferencing

  • Summary

    • What Have We Learned?

    • Video Conferencing has Evolved over 35 Years, from a Technology-Driven "Gee Wiz" Toy to a User-Driven Tool, Facilitating Today's Business, Education and Medical Sectors with New Global Communications Capabilities


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