Ambient Networks (AN) project focuses on the convergence of heterogeneous networks over different domains. The aim (among others) is to facilitate co-operation, mobility support and multi-access between networks and terminals. One of the most important goals is to integrate the different AN-concepts together for validation. This paper presents an integrated prototype as proof-of-concepts, which can be used for demonstration purposes. In particular the prototype has integrated Host Identity Protocol (HIP)-based mobility, HIP network mobility, Simultaneous Multi-Access (SIMA) policies, Generic Link Layer (GLL), mobility triggering (TRG) and basic composition concepts within the Ambient Control Space framework.