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Within the ITU-T next generation network (NGN) architecture, the resource admission control function (RACF) has been designated to perform the application-driven QoS control across both access and core networks. However, an actual RACF implementation acting on MPLS metro-core networks does not exist since RACF lacks of the capability to configure QoS policies on MPLS network nodes. This prevents an...
Signaling flow transmission is of the most importance in the discussion of the Quality of Service (QoS) problem of the Next Generation Network (NGN). For implementing service reachability, the signaling flow of the NGN services should be transmitted reliably and with the highest priority. Because the signaling flows and the media flows of the NGN service are mixed while being transmitted, the present...
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