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Current Diameter QoS Application Focus on QoS authorization triggered by path-coupled signaling (e.g. RSVP/NSIS) from endpoints, assuming The endpoints are always able to understand network QoS requirements and initiate the QoS request through network layer signaling The QoS authorization results are pulled by the network elements (named as Pull mode) Integrated models imply The Authorizing server and application server are collocated within the same operator domain The existing mechanisms and parameters concerns about the QoS as the only resource to be controlled |