Тетрадка.бгNEXT GENERATION NETWORKS (NGN).

The term "next" generation networks (NGN) refers to the future competitive marketplace for communications and information services. It is generally accepted that Next Generation Networks do not represent specific technologies but rather s vision and a market concept enabled by different types of technologies. NGN are implemented in such a way that the functions performed by the network are separated into different functional planes. The functional planes are separated by open interfaces in order to facilitate the interconnections to other operators' networks and the integration of third-parties' services and applications. NGN are multi-service networks that can be used to provide multiple services as opposed to legacy networks that are only used for specific services. These all make the NGN very friendly for operator interconnection and technology convergence that will enable the emergence of the seamless service concepts, where users can access their "home" services from any type of access networks. 1.1.1. Market drivers The world is becoming more and more personalized and information-centric with an always-anywhere-on-demand character. • Deregulation is opening up the f