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Conference media distribution in the proposed architecture.

Conference media distribution in the proposed architecture.

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Audio conferencing is an important aspect of Internet Telephony services. In this article, using a centralized conferencing architecture, we propose to employ application layer multicast for media distribution, by using "agents" responsible for the delivery of streaming media to end-clients, aiming at reducing the traffic in the network and the ser...

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Context 1
... what concerns media distribution, they act as media reflectors, since they receive media from the dummy agent and relay it to their children (agents or passive clients). Also in this respect agents act also as media proxies, as they receive media from ACs and forward it to the CS (see Fig. 1). Another agent functionality is the classification of clients as active or passive based on the media that they instantaneously produce (see Section ...
Context 2
... fact that in the streams that are sent to each AC, only N-1 (considering N the number of ACs) audio channels are mixed (its own contribution is not mixed), resulting inadequate for PCs, as in this case they would not receive all contributions. From the CS point of view, the DAG is equivalent to any SIP compliant client (e.g., a SIP softphone). In Fig. 1, are represented the media paths in the proposed architecture highlighting the use of multicast trees at the application layer for media distribution to the PCs. The construction of these trees is out of this paper scope. Protocols such as TBCP [6] could be used for this ...

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