L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. Craighill, and R. Brungardt, "Architecture for a multimedia teleconferencing system," in Proc. ACM SIGCOMM, pp. 126--136, Aug. 1986.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....concurrency. Many applications are natural candidates for using multicast, e.g. distributed databases [1] replicated file systems [2] resource allocation in distributed systems [3] distributed process management [4] distributed games [5] replicated procedure calls [6] and teleconferencing [7]. Most existing multicast services (and much of the research) has concentrated on local area networks (LANs) 1] 4] 8] 10] since these provide a broadcast medium, simplifying Manuscript received September 22, 1994; revised September 15, 1995; approved by IEEE ACM TRANSACTIONS ON NETWORKING ....

L. Aguilar, J. Garcia-Luna-Aceves, D. Moran, E. Craighill, and R. Brungardt, "Architecture of a multimedia teleconferencing system," in Proc. ACM SIGCOMM, 1986, pp. 126--135.

....the effectiveness of personto person collaborations. Lantz [5] have studied conferencing architectures for text and graphics. Dewan [4] has addressed the issue of sharing and coupling among windows displaying shared workspace. Ahuja et al. at AT T Bell Laboratories [2] and Aguilar et al. at SRI [1] propose architectures for person to person audio and or video conferencing. Connection management architectures for providing flexible control of media connections among users and or servers were addressed in [8, 10] and a preliminary framework for modeling collaborations was proposed in [9] ....

L. Aguilar, J.J. Garcia-Luna-Aceves, D. Moran, E.J. Craighill, and R. Brungardt. Architecture for A MultiMedia Tele-Conferencing System. Proceedings of the SIGCOMM'86 Symposium on Communications Architectures and Protocols, Stowe, VT, pages 126--136, August 5-7, 1986.

....elements are defined in a negotiation phase and after configuration and customization, a dedicated protocol could be used. The coordination layer as the middle part of the second tier is structured in the same way. The literature documents many architectures for the communication layer, see (Aguilar et al. 1986) (Crowley et al. 1990) 3 Outlook During the last month we began implementing parts of GOS in two research projects. The first research prototype, WebBook, provides mechanisms for document management in intranets of distributed organisations. Using WebBook, editors of intranet documents can ....

Aguilar, L., Garcia-Luna-Aceves, J.J., Moran, D., Craighill, E.J., Brungardt, E. (1986). Architecture for a Multimedia Teleconferencing System. Communications Architectures and Protocols, SIGCOMM, Symposium, pp. 126-136.

.... It will thus rapidly become a preferred paradigm for many applications [Ngo91] such as resource finding [Aha88] replicated file system [Che85] distributed games [Ber85] distributed databases [Sto79] email distribution list [Sak85] routing table dissemination [Qui80] and computer conferencing [Agu86], etc. The concept of multicast communications has received much recent attention. One can cite work carried out in standardization committees (ANSI, ISO, etc. Coh91, Coc92, Mou92, ISO93, MPC95] and projects CIO [Mat93, Mil93] Berkom [Del93] for the definition of a multicast taxonomy, service ....

Aguilar L. et. al., "Architecture of a Multimedia Teleconferencing System", Proc. of ACM SIGCOMM, pp. 126-135, 1986.

....sites in the same coherent state. That means updates have to be done on each site in the same order. Updating all copies of a passively replicated file or database also takes advantage of multicast. Teleconferencing : sending voice, video or data packets to all the members of a tele conference [Aguilar 86] These applications are today widely spread in the Internet world : IVS [Turletti 93] and NV [Frederick 92] are video conferencing softwares ; WB [Jacobson 93] is a distributed white board that allows session participants to share (and modify) the same document at the same time. They are ....

....With particular thanks to: Sbastien BOUAT and Patrick SCABELLO, students at the ENSIMAG. This paper relates their work on Multicast. Larry GREEN (XTP Forum) and Christian HUITEMA (INRIA) who introduced valuable ideas in the discussion, and in the elaboration, of this paper. 6 REFERENCES [Aguilar 86] L. Aguilar, J. Garcia Luna Aceves, D. Moran, E. Craighill, R. Brungardt, Archi tecture for a Multimedia Teleconferencing System, ACM 1986 Symposium on Communications Architectures and Protocols, Stowe,Vermont,pp 126 135, Aug. 1986. Ahamad 85] M. Ahamad, A. Bernstein, Multicast Communication ....

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L. Aguilar, J. Garcia-Luna-Aceves, D. Moran, E. Craighill, R. Brungardt, Archi- tecture for a Multimedia Teleconferencing System, ACM 1986 Symposium on Communications Architectures and Protocols, Stowe,Vermont,pp 126-135, Aug. 1986.

....this paper we assume the use of a besteffort operating system and network; in other words, no time related guarantees are provided. A number of systems and techniques have appeared in the literature, addressing various aspects of multimedia systems. Early efforts provided audio communication only [4]. Some systems use analog video and audio communication [5] with the corresponding selfevident limitations in terms of media integration in user applications. A significant volume of work has been reported at the system architecture level [8; 16; 18] describing the interface between applications ....

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. J. Craighill, and R. Brungardt. Architecture for a Multimedia Teleconferencing System. In Proceedings of the ACM SIGCOMM '86 Symposium, pages 126--136, August 1986.

....this paper we assume the use of a besteffort operating system and network; in other words, no time related guarantees are provided. A number of systems and techniques have appeared in the literature, addressing various aspects of multimedia systems. Early efforts provided audio communication only [4]. Some systems use analog video and audio communication [5] with the corresponding selfevident limitations in terms of media integration in user applications. A significant volume of work has been reported at the system architecture level [9; 17; 19] describing the interface between applications ....

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. J. Craighill, and R. Brungardt. Architecture for a Multimedia Teleconferencing System. In Proceedings of the ACM SIGCOMM '86 Symposium, pages 126--136, August 1986.

....manner for the execution of services and management. Interoperability implies, for example, that users using a specific MMC service (e.g. JVTOS [3] would like to work together with users using another MMC implementation (e.g. BERKOM MMC [4] The diversity of emerging MMC services (e.g. 3] 4] [5], 6] 7] 8] requires homogenisation in order to make a chance in the commercial market. Standardisation In the proceedings of the 2nd IEEE International Workshop on Advanced teleservices and High Speed Communication Architectures, Heidelberg, 26 28 September of MMC services will be necessary ....

L. Aguilar et al., 'Architecture for a multimedia Teleconferencing system'. ACM, 1986

....IBM Corporation, Xerox Corporation, UVC Corporation, and the University of California MICRO program. 4 Chapter 14. Multimedia Conferencing as a Universal Paradigm for Collaboration at BBN [6] Ludwig et al. at Bellcore [9] Ahuja et al. at Bell Laboratories [2] and Aguilar et al. at SRI [1], Casner et al. at ISI [4] and the PX system [8] have proposed architectures for multimedia conferencing. Sophisticated connection management facilities, which can lead to the use of conferencing as a general paradigm for interaction and collaboration among any set of participants, are not fully ....

L. Aguilar, J.J. Garcia-Luna-Aceves, D. Moran, E.J. Craighill, and R. Brungardt. Architecture for A Multi-Media Tele-Conferencing System. Proceedings of the SIGCOMM '86 Symposium on Communications Architectures and Protocols, Stowe, VT, pages 126--136, August 5-7, 1986.

....that meeting rooms better accommodate groups of more than three conferees and that they typically provide higher audio quality. 3.7 Other Systems Numerous other multimedia conferencing systems have been developed in the last few years. Noteworthy conferencing implementations include work at SRI [1], the Rapport system at Bell Labs [2] several MCC efforts [10] the Olivetti sponsored research of Lantz and Lauwers [25] as well as the Pandora project [19] and Sakata s work at NEC [32] 4 Observations A myriad of factors have given rise to the diversity in conferencing systems. Yet, certain ....

Aguilar, L., Garcia Luna Aceves, J., Moran, D., Craighill, E., Grungardt, R., "Architecture for a Multimedia Teleconferencing System", ACM Proceedings SIGCOMM '86 Symposium on Communications Architectures and Protocols, Stowe, VT, pp.126-136 (Aug 1986).

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L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. Craighill, and R. Brungardt, "Architecture for a multimedia teleconferencing system," in Proc. ACM SIGCOMM, pp. 126--136, Aug. 1986.

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L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E.J. Craighill, and R. Brungardt. Architecture for a multimedia teleconferencing system. In Proc. ACM SIGCOMM, pg. 126--136, Aug. 1986.

No context found.

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. J. Craighill, and R. Brungardt. Architecture for a multimedia teleconferencing system. In Proc. ACM SIGCOMM, pages 126-136, Aug. 1986.

No context found.

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E.J. Craighill, and R. Brungardt. Architecture for a multimedia teleconferencing system. In Proc. ACM SIGCOMM, pages 126--136, Aug. 1986.

....a polymorphic or multimodal mix of resources being shared across networks. A resource can be an application, host object, or network entity shared in collaboration at various levels of granularity. Four primary classes of multimedia traffic with different Quality of Service characteristics exist [1]: control packets for coordination information are mostly of low volume, but need reliable transmission; real time media transport time critical information and tolerate some loss; elastic media are apt for discrete information with relaxed timing constraints, but tolerate no loss; and bulky ....

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. J. Craighill, and R. Brungardt. Architecture for a multimedia teleconferencing system. In Proc. ACM SIGCOMM, pages 126--136, Aug. 1986.

....may be costly, and both implementation and run time monitoring of a floor control system can become very complex. Distributed floor control has been proposed for the MERMAID system [40] and in the form of a distributed voice activated collisionsensing algorithm in the EMCE teleconferencing system [2]. EMCE supports a free for all floor policy in a local area network with ample bandwidth and low delay, allowing users to give brief feedback to a speaker without the need to take the floor. Based on this design, Craighill et al. 7] implemented the task activated COMet al..gorithm for a ....

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E.J. Craighill, and R. Brungardt. Architecture for a multimedia teleconferencing system. In Proc. ACM SIGCOMM, pg. 126--136, Aug. 1986.

....control. The usage of tools is often interdependent a video channel may assist in conveying nonverbal information, but its usability for most information relies also upon accompaniment with audio and proper temporal synchronization. Four primary classes of multimedia traffic can be identified [2], all of which impose different QoS requirements on the collaborative environment: control packets for floor and session control information, which are mostly of low volume, but need reliable transmission; real time packets for time critical media which can possibly incur some loss; non real time ....

....such data is not present anymore in a session. Floor proxies can be granted to users or sites as place holders for withdrawing session participants or vanished sites to allow for session continuation. 7 Related Work Floor control for multimedia architectures has first been addressed a decade ago [2]. Its roots can be traced back to psycholinguistic studies on turn taking in conversations [66] Work in conversation analysis [45] suggests that turn taking relevance points (TRPs) indicate possible hand over times for floors. Similar issues have been researched in the context of Computer ....

Aguilar L, Garcia-Luna-Aceves JJ, Moran D, Craighill EJ, Brungardt R (1986) Architecture for a multimedia teleconferencing system. Proc. SIGCOMM, 126-36, Stowe, VT, Aug

No context found.

L. Aguilar, J.J. Garcia-Luna-Aceves, D. Moran, E.J. Craighill, and R. Brungardt. Architecture for a multimedia teleconferencing system. In Proc. Sigcomm'86, pages 126--136. ACM, August 1986.

....control. The usage of tools is often interdependent a video channel may assist in conveying nonverbal information, but its usability for most information relies also upon accompaniment with audio and proper temporal synchronization. Four primary classes of multimedia traffic can be identified [2], all of which impose different QOS requirements on the collaborative environment. Control packets are needed for floor and session control information, which are mostly of low volume, but require reliable transmission. Real time packets are needed for time critical media that can possibly incur ....

....of such data is no longer present in a session. Floor proxies can be granted to users or sites as place holders for withdrawing session participants or vanished sites to allow the session to continue. 7 Related work Floor control for multimedia architectures was first addressed a decade ago [2]. Its roots can be traced back to psycholinguistic studies on turn taking in conversations [65] Work in conversation analysis [45] suggests that turn taking relevance points (TRPs) indicate possible hand over times for floors. Similar issues have been researched in the context of ....

Aguilar L, Garcia-Luna-Aceves JJ, Moran D, Craighill EJ, Brungardt R (1986) Architecture for a multimedia teleconferencing system. Proceedings of SIGCOMM, Stowe, Vt., ACM Press, New York, NY, pp 126--136

....existing systems for online collaboration are proprietary, sparsely documented, and limited to local area networks, or sessions with few users. Abdel Wahab discussed an early prototype of a token based control mechanism for a shared workspace. An alternative approach was proposed by Aguilar et al. [1], in which distributed, task activated floor control serves as a high level analogy to collision sensing in channel access. Ziegler et al. 17] researched packet switched voice conferencing in a broadcast and unicast setting. ITU standards 120 [14] and 320 for video conferencing are ....

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E.J. Craighill, and R. Brungardt. Architecture for a multimedia teleconferencing system. In Computer Communication Review, Proc. ACM SIGCOMM, 16(3):126--136, Stowe, VT, Aug. 1986.

....control. The usage of tools is often interdependent a video channel may assist in conveying nonverbal information, but its usability for most information relies also upon accompaniment with audio and proper temporal synchronization. Four primary classes of multimedia traffic can be identified [2], all of which impose different QoS requirements on the collaborative environment: control packets for floor and session control information, which are mostly of low volume, but need reliable transmission; real time packets for time critical media which can possibly incur some loss; ....

....such data is not present anymore in a session. Floor proxies can be granted to users or sites as place holders for withdrawing session participants or vanished sites to allow for session continuation. 7 Related Work Floor control for multimedia architectures has first been addressed a decade ago [2]. Its roots can be traced back to psycholinguistic studies on turn taking in conversations [66] Work in conversation analysis [46] suggests that turn taking relevance points (TRPs) indicate possible hand over times for floors. Similar issues have been researched in the context of Computer ....

Aguilar L, Garcia-Luna-Aceves JJ, Moran D, Craighill EJ, Brungardt R (1986) Architecture for a multimedia teleconferencing system. Proc. SIGCOMM, Stowe, VT, Aug, pp 126-36 ACM Press, New York, NY

No context found.

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. Craighill, and R. Brungardt, "Architecture for a multimedia teleconferencing system," in Proc. ACM SIGCOMM, pp. 126--136, Aug. 1986.

No context found.

Aguilar L., J. J. Garcia-Luna-Aceves, et al., "An architecture for a multimedia teleconferencing system", in Proceedings of the ACM SIGCOMM Conference on Communications Architectures & Protocols, Stowe, Vermont, United States, ACM Press, p. 126--136, 1986.

No context found.

L. Aguilar, J. Garcia-Luna-Aceves, D. Moran, E. Graighill, R. Brungardt, Architecture for a multimedia teleconferencing system, in: Proceedings of the ACM SIGCOMM, Association for Computing Machinery, Baltimore, Maryland, 1986, pp. 126--136.

No context found.

L. Aguilar, J. J. Garcia-Luna-Aceves, D. Moran, E. J. Craighill & R. Brungardt (1986). Architecture for a Multimedia Teleconferencing System. Proceedings of the SIGCOMM'86 Symposium on Communications Architectures and Protocols, 126-136.

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