Communications System And Method

Abstract: A communication system comprises a packet data network for communicating data packets supporting a communication service to and from a communication terminal via a data path through the packet data network, a path computational element for controlling the data path, an application server for controlling the communication service and an internet multimedia sub-system for controlling the server. The application server provides the communication service to the communication terminal in response to registration request transmitted from the communication terminal to the internet protocol multimedia sub-system requesting an establishment of the communication service. When establishing the communication service, the internet protocol multimedia sub-system communicates an adaptation message to the path computational element including information indicating service quality parameters associated with the communication service. The path computational element calculates the data path in accordance with the service quality parameters and adapts the packet data network in accordance with the calculated data path.

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