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Telecom ecosystems are composed by a set of heterogeneous wireless and cellular networks as well as multi-interface user terminals capable to connect and communicate with many types of networks. The design of products or services for such heterogeneous environments requires the seamless integration of different network architectures which are ultimately implementing many communication mechanisms. Enabling user terminals to select the most suitable access network according to various access network characteristics (mobile, cellular, sensor, fiber, etc.) remains a challenging endeavor. The business perspectives of successfully achieving such a convergence are only matched by the complexity of the resulting solutions.