NGN and internet: From coexistence to integration

NGN has been on the implementation phase, primarily focused on the replacement of PSTN. NGN carriers try to differentiate NGN from the current Internet for the service quality and reliability. Users of the current Internet, however, expect the early integration of NGN and the Internet, as Internet services have already been deployed into the society and daily life. In this paper, we address the interoperability, management, and security issues for the future integration of NGN and Internet, such as the usage of IPv4 and IPv6 (IPv6 migration), DNS operation, updating end-user equipments and Internet connectivity over NGN. We also propose and evaluate a future model of multi-network connection of NGN networks and the Internet.