Skip to Main Content
Summary form only given, as follows. Telecommunication networks are providing real-time-base services with guaranteed QoS (Quality of Services) based on the connection-oriented networks. The IP based networks are, based on connectionless networks, providing non-real-time and non-guaranteed QoS services, such as e-mail, ftp and WWW. Internet is being enhanced to support connection-oriented emulation applications such as IP telephony, IP facsimile, and IP teleconferencing, whereas the telecommunication networks are going to support multigrade of services including non-guaranteed QoS to accommodate the requirements of IP based applications. The next generation networks will provide very wide variety of secure services with wide variety QoS classes ranging from non-guaranteed QoS to high-guaranteed QoS, real-time and non-real time bases. This presentation will introduce the current status of development on the next generation networks and discuss the issues for making NGN reality.