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Video Conferencing

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Video Conferencing Video Conferencing Presentation Transcript

  • Videoconferencing
    • Rich Phelps
    • TSM602 Session One
  • What is Video Conferencing?
    • A videoconference is a set of interactive telecommunications technologies which allow two or more locations to interact via two way audio and video transmissions simultaneously.
    • Will also see video conferencing referred to as visual collaboration and a type of groupware.
    • Groupware – is a technology that integrates work on a single project by multiple concurrent users.
  • Benefits to Video Conferencing
    • Can improve work quality
    • Increase productivity
    • Reduce costs $$$$
    • Improves communication
    • Groups can meet more frequently
    • Critical meetings can be convened in less time
    • More faculty and staff can be involved
  • Video Conference Components
    • Camera - to capture and send video from your local endpoint.
    • Video Display - to display video received from remote endpoints.
    • Microphone - to capture and send audio from your local endpoint.
    • Speakers - to play audio received from remote endpoints.
    • Broadband Connectivity – to exchange data packets between stations.
    All Videoconferencing systems have key pieces that make up a system. The components required for a videoconference system include:
  • Primary Videoconference Equipment
    • Polycom is the market leader in endpoint video and voice communication
    • We have standardized on Polycom
    • Conference room units UK uses – ViewStation VSX 6000 and VSX 5000
    • Personnel units Deployed – Via Video, CMA Desktop, and Polycom V500 units.
  • Polycom VSX 60005000 Systems cost between $4000-$6000
  • Polycom Personnel Solutions These solutions run between $400 - $2000
  • Codec, Coder-Decoder
    • Videoconference hardware codes the outgoing video and audio signals and decodes the incoming signals.
    • Prior to transmission, the codec converts analog signals to digital signals and compresses. Incoming audio and video must be decompressed and converted from digital back to analog.
    • Makes the audio/video data “small enough” to be practical for sending real time data over a network connection.
  • Real-time Transport Protocol
    • Developed in 1996 by IETF
    • Adopted as a standard in 1998
    • Transmits packets over UDP
    • Media Stream – Separate RTP connection
    • What RTP doesn’t guarantee
  • H.323 and H.264
    • H.323 – Video Compression standard that allows a wide variety of videoconferencing systems to communicate over TCP/IP networks.
    • H.264 – A refinement of H.323 standard that allows for high quality sound and picture with less bandwidth than H.323 standard.
  • Components to support H.323 and H.264
    • Terminals
    • Gateways
    • Gatekeepers
    • MCU – Multipoint Control Units
  • QoS – Quality of Service Why do we need it?
    • QoS refers to the capability of a network to provide better service to selected network traffic.
    • Classification
    • Scheduling
    • Provisioning
    Larger Input I.E Amazon.com Fewer Outputs More Inputs