Technical Research Of NGN Load-carrying Net

NGN is the abbreviation of"Next Generation Network"or"New Generation Network". By adopting the exoteric and standard system structure, NGN is a complex operation which provides tone, video, data, and next generation network as well Softswitch is the core of it.NGN is the network which involves practical and comprehensive amalgamation. It consists of tele-networks, such as PSTN, ISDN, H.323, and data-networks, for example, ATM, IP, etc. So the communication of multifold networks is the essential condition of the succession of NGN. As the most successful Internet technology, IP technology, whose capacity is improved at its utmost. So in the future NGN network, IP network must be the most widespread Load-carrying net.There is no doubt that, no matter the flux model or the quality of service, there are great distinction between the traditional INTERNET Service and NGN. All of the traditional Internet service model are not symmetrical, and have no specific orders to quality of service (such as Time-delay.Dithering etc.). While the service model of NGN is symmetrical, even if the different coding methods have different demands to the broad band. Every specific application has its own invariable demands to the broad band. Besides that, the implement of NGN service is also quite strict to quality of service.At the same time, the present IP network also has a lot of problems such as network safety, QoS protection, etc. If the problems cann't be solved, it must effect the whole implement of NGN technology and development of service. In order to make the development of NGN service successfully, the Load-carrying net must be elaborately designed. Quality of service, network safety and so on must be considered.Therefore, NGN Load-carrying net must be a complex network, and it...