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Stream synchronization for voice over IP conference bridges

McGill University
Publication Date
  • Engineering
  • Electronics And Electrical.
  • Design


Potentially large network delay variability experienced by voice packets when travelling over IP networks complicates the design of a robust voice conference bridge. Intrastream synchronization is required at the conference bridge to smooth out network delay jitter on a given stream and provide a continuous stream of voice packets to the conference bridge core. Interstream synchronization is needed to provide time synchronization between packets in different streams, allowing for a mapping of selected voice streams to the conference bridge output and the creation of a periodic and synchronized output from the conference bridge.

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