Multimedia conferencing in the Etherphone environment
- 1 October 1991
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Computer
- Vol. 24 (10), 69-79
- https://doi.org/10.1109/2.97253
Abstract
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.Keywords
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