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The IST European project EuQoS ("end-to-end QoS over heterogeneous networks ") has defined a NGN architecture that builds, uses and manages the end-to-end QoS path across different administrative domains and heterogeneous networks (UMTS, xDSL, Ethernet, WiFi and satellite access networks and IP/MPLS domains). The architecture follows a model more similar to Internet open architecture than to IMS: it provides to the end user a clear interface that allows it to request (without changing its application signaling protocol) which kind of service is required, regardless of the service provider particular policies (meeting regulators' and Internet users' net neutrality requirement). This allows the network operator to take advantage of the new Internet Services as the driver for a new commercial offer based on advanced connectivity to the end user. In this article we present the defined QoS framework, which has been developed and validated by the Project.