Tandem-free VoIP conferencing: a bridge to next-generation networks

  title={Tandem-free VoIP conferencing: a bridge to next-generation networks},
  author={Paxton J. Smith and Peter Kabal and Maier Blostein and Rafi Rabipour},
  journal={IEEE Communications Magazine},
This article surveys approaches to teleconferencing in voice over IP networks. The considerations for conferencing include perceived quality, scalability, control, and compatibility. Architectures used for conferencing range from centralized bridges to full mesh. Centralized conference bridges used with compressed speech degrade speech quality when multiple talkers are mixed and subjected to tandem coding operations. Full mesh and multicast solutions (mixing at the endpoints) are inappropriate… CONTINUE READING

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