This paper belongs to a series of research documents describing the progress in the specification and development of the EMYNOS framework offering an IP based platform for emergency services. EMYNOS is an international research project funded by the European Commission. Although migrating to Next Generation 112 and 911 is not new as a topic, no real testbed that can be used for evaluating the relevant standards exists so far. In this paper we discuss the EMYNOS approach and in particular some mechanisms that have been developed in this context. Special attention is paid to the EMYNOS testbed that was assessed during the ETSI NG112 plugtests in 2016 and 2017. Some experiments and test results are provided as well.