(This document requires the use of Adobe Acrobat Reader). Organisation for Economic Co-operation and Development, Directorate for Science, Technology and Industry, Committee for Information, Computer and Communications Policy, DSTI/ICCP/CISP(2007)2/FINAL, 2008. "... This paper focuses on the area where the most significant changes are taking place in the communications sector, rather than providing an overview of all communication platforms, nor is it aimed to assess the relative extent to which different platforms complement or compete with each other. As such, this paper is limited to examining developments in what is commonly referred to as next generation access networks and next generation core networks and their role in convergence. The focus on next generation access and core networks is because they are changing the public switched telecommunication networks (PSTN)..."