NCSR Demokritos is a member of the Athens5Glink initiative which aims to act as an integrated large-scale end-to-end testbed for the experimentation on 5G and future network technologies. The testbed will be openly accessible to the 5G community for real-life demonstration, validation and assessment of cutting-edge technologies. The campus of NCSR Demokritos covered by five software-driven 5G wireless nodes and supported by an optical backbone is one of the two testbed sites of Athens5Glink.