NDLI: Software for interactive on-line conferences

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Software for interactive on-line conferences

Content Provider	ACM Digital Library
Author	Greif, Irene Sarin, Sunil K.
Abstract	A layered architecture for the implementation of real-time conferences is presented. In a real-time conference a group of users each at his or her own workstation, share identical views of on-line application information. The users cooperate in a problem solving task by interactively modifying or editing the shared view or the underlying information, and can use a voice communication channel for discussion and negotiation. The lower layer in this architecture, named Ensemble, supports the sharing of arbitrary application-defined objects among the participants of a conference, and the manipulation of these objects via one or more application-defined groups of commands called activities. Ensemble provides generic facilities for sharing objects and activities, and for dynamically adding and removing participants in a conference; these can be used in constructing real-time conferencing systems for many different applications. An example is presented of how the Ensemble functions can be used to implement a shared bitmap with independent participant cursors. The relation between this layered architecture and the ISO Open Systems Interconnection reference model is discussed. In particular, it is argued that Ensemble represents a plausible first step toward a Session-layer protocol for “multi-endpoint connections”, a neglected area of communication protocol development.
Starting Page	46
Ending Page	58
Page Count	13
File Format	PDF
ISBN	0897911407
DOI	10.1145/800023.808333
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1984-01-01
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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