Distributed Resource Management Across an IP Backbone

Communications systems today are moving rapidly from a hierarchical model to a modular, standards-based distributed model in which media gateways, signaling gateways, and media servers deliver services. The "flattened" architecture of the distributed model can simplify the communications infrastructure while providing reliability and scalability, which promises to lead to lower costs and other advantages in service implementations.

This paper provides an in-depth description of a communications service delivery system design in which media gateways, signaling gateways, and media servers delivering conferencing, speech recognition, text-tospeech (TTS), and interactive voice response (IVR) services are loosely coupled through a LAN or WAN IP backbone. Feature and function distribution among service components (applications, media resources, network trunks, etc.) and the required interactions between switching, media delivery, and presentation service components will be discussed along with the specific functions and messages that can be implemented to control and manage distributed service components.

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