A framework of software-based PBX services over Internet

Rong-Tsung Sheu, J.-L.C. Wu
Proceedings of the 1999 ICPP Workshops on Collaboration and Mobile Computing (CMC'99). Group Communications (IWGC). Internet '99 (IWI'99). Industrial Applications on Network Computing (INDAP). Multimedia Network Systems (MMNS). Security (IWSEC). Parall  
Although Internet is a powerful and economical communication vehicle, its poor quality-of-service (QoS) is still the major obstacle for multimedia transport over Internet. Basically, both the high-speed broadband network platform and the effective multimedia application platform are needed to gain and promote the benefit of multimedia services to end-users. The ATM-based broadband network would be an adequate inter-network platform for multimedia communication. In general, different application
more » ... fferent application platforms will be needed for different traffic requirements. In multimedia applications, a hybrid service is essential for supporting real-time traffic and non-real-time traffic simultaneously, for example in a conference call, data and voice have to be transferred at the same time. The goal of this paper is to design a framework which can support PBX services with multicasting capability for TCP/IP running over Internet and provide portability to the upper-layer distributed applications. A model of the hierarchical service architecture is proposed to solve the problem of QoS for end-users. Finally, we build an agent-oriented framework for distributed switching Agent with object caching mechanism to provide the capability of having a better deployment to clients. ASx(Ei): Address server x dominates an Endpoint(Ei) MSu(Ei): Multicast server u dominates an Endpoint(Ei) ASy(Ej): Address server y dominates an Endpoint(Ej) MSv(Ej): Multicast server v dominates an Endpoint(Ej) Figure 5. Session control protocol
doi:10.1109/icppw.1999.800109 dblp:conf/icppw/SheuW99 fatcat:hssqx3xd2vb3fami6tq7g3p7h4