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Multimedia Conferencing in the Etherphone Environment
October 1991 (vol. 24 no. 10)
pp. 69-79

The latest extension of the Etherphone project is described. It creates a powerful conferencing system that lets users control their participation in multiple conferences across multimedia networks. The emphasis is on the software mechanisms that support its new features: first, a Sparcstation facility called Phoenix that extends the Etherphone software architecture to permit more flexible conferencing and to control Sparcstation-based Ethernet audio transmission, and, second, the integration of the Phoenix capabilities with Macaw, the earlier video extensions. Also described is a multicast packet protocol for audio transmission, which reimplements and extends the earlier special-purpose protocols, adding per-channel volume control and full support for the extended conferencing modes.

Citation:
Herrick M. Vin, Polle T. Zellwegger, Daniel C. Swinehart, P. Venkat Rangan, "Multimedia Conferencing in the Etherphone Environment," Computer, vol. 24, no. 10, pp. 69-79, Oct. 1991, doi:10.1109/2.97253
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