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Dynamic configuration of conferencing applications using pattern-matching multicast

1995; Springer Science+Business Media; Linguagem: Inglês

10.1007/bfb0019273

1611-3349

Henning Schulzrinne,

Service-Oriented Architecture and Web Services

Multimedia conferencing systems are usually large, complex software systems. We describe a local control architecture and communication protocols that allow to tie together media agents, controllers and auxiliary applications such as media recorders and management proxies into a single conference application. Unlike other systems, control of a single conference can be shared between several controllers. Each media can be handled by one or more independent media agents. Parts of the system have been implemented using an IP-multicast-based audio conferencing tool (NeVoT). The communicating applications disseminate state and control information through a replicator. The replicator mainly limits distribution of messages based on expressed interest of other applications, thus implementing an application-level, receiver-driven local multicast. It also automatically starts applications as needed. The same functionality was also implemented IP multicast restricted to the local host.