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
  Worlds Fair -- ATTs 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 Conferencing Unit
Roll-about Telemedicine 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