CELTIC is a EUREKA cluster programme, which initiates and runs privately and publicly funded R&D projects in the field of telecommunications. The cluster, which runs until 2011, is supported by most of the major European players in communication technologies. CELTIC projects are focusing on telecommunication networks, applications and services, looking with a complete system approach. The size of the CELTIC budget is in the range of 1 billion euro. CELTIC is open to any kind of project participants from all EUREKA countries.