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Title:

Virtual Briefings Technical Update

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Provide a testbed for using and debugging new collaboration technologies ... Metronome (A/V sync) Challenges. Last mile connectivity (overprovision or QOS) ... – PowerPoint PPT presentation

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Learn more at: http://www.internet2.org
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Title: Virtual Briefings Technical Update


1
Virtual Briefings Technical Update
  • Jon Zeeff, JT July 2002 V1.1
  • jzeeff_at_internet2.edu
  • Slides with notes
  • http//www.internet2.edu/jzeeff/presentations/

2
Monthly updates on Internet2 related activities
  • Provide a testbed for using and debugging new
    collaboration technologies
  • Demonstrate and promote the widespread use of new
    collaboration technologies
  • Provide a platform to deliver interactive
    briefings of Internet2-related activities

3
Equipment
  • Accord and Radvision MCUs at OSU
  • Polycoms
  • H.323 at 768K bps, H.263
  • Real and Windows streaming (unicast)
  • MPEG 1 and 2 (multicast)
  • DVTS (30 Mbits)
  • Audio/Video switcher for wiring flexibility and
    repeatability

4
(No Transcript)
5
Procedures
  • End point testing
  • PowerPoint on web site
  • Watch for open mics mute with MCU
  • MCU control directly
  • Video lighting
  • Close mic-ing

6
Accord MCU Control Software
7
Lighting
8
Test Tools
  • Color bars
  • Vectorscope
  • True RTA (freq and latency)
  • Audio and video level meters
  • Metronome (A/V sync)

9
Challenges
  • Last mile connectivity (overprovision or QOS)
  • Better quality video
  • Production control
  • Titling
  • Reliable H.323 equipment
  • Redundancy (eg, telco backup for audio)

10
Future
  • Multi-protocol MCU
  • Video switching and mix minus audio
  • Titler
  • Video answering machine
  • A/V sync measurement delay

11
More Future
  • Automated system for conferencing and netcasting
  • Packet doubler
  • Security
  • Scheduling Queueing
  • Apps sharing (Powerpoint)

12
Misc
  • Thanks to OSU staff and end point testers
  • Problems http//www.internet2.edu/
  • activities/html/lessonslearned.html
  • Presentation http//www.internet2.edu/
  • jzeeff/presentations/
  • Email jzeeff_at_internet2.edu
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