Center for Collaborative Technologies at the University of Washington

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Center for Collaborative Technologies at the
University of Washington
Highlights of Conference XP 5.0
Release Candidate is available now from
http//cct.cs.washington.edu/

• ConferenceXP Overview
• Platform for Real-time collaboration
• High-quality multipoint conferencing
• Full-screen, real-time video at 30 fps
• Built-in presentation capability, whiteboard
  screen sharing
• ConferenceXP is a shared source platform
• ConferenceXP Source is available from
  http//codeplex.com/ConferenceXP

• Diagnostics
• Problem Understanding network failures is very
  difficult
• Approach Aggregate connectivity information at
  a diagnostic service
• Details (similar to multicast beacon)
• Leverage the diagnostic info in RTCP Receiver
  reports Sender reports
• Each RTCP packet is copied over unicast to the
  diagnostic service

• Client UI Changes
• Tool tips show throughput warnings
• Missing participant Ghost Icon
• Detail view via Web Service

• Security
• ConferenceXP 5.0 provides two kinds of
  password-protected venues
• Weak Password required to access the mapping
  from venue name to multicast IP. Protects
  against accidental access.
• Strong Password is hashed into a symmetric
  encryption key. All stream data is encrypted
  with the key.

Security User View

• Reflector Enhancements
• Enhancements for NAT environments
• ConferenceXP 5 allows multiple clients to run
  behind a single NAT device
• JOIN protocol removes assumptions about which
  ports will be used.
• Multi-Reflector
• Multiple reflectors can be configured to
  communicate between themselves.
• Improves scalability for cases where there are
  many unicast clients.

• High Quality Audio
• Changes to DirectShow buffering enable
  high-quality uncompressed audio
• Higher quality compressed formats added
• User control via advanced audio configuration UI
• (Credit José Feghali TCU)

Center for Collaborative Technologies at
University of Washington http//cct.cs.washing
ton.edu/ ConferenceXP is free for educational
and non-commercial uses. It is available from
http//cct.cs.washington.edu/ For more
information contact cct_at_cs.washington.edu