ABSTRACT
The business model of an Next Generation Network Service Provider (NGNSP), using standards, will be very different. The distribution of basic Next Generation Network (NGN) service could thus become a thin, subtle process. A similar commercial distribution model is to be expected for basic NGN service; perhaps the distinction between retail and wholesale will disappear. Conveying Outbound communications over Internet Protocol (IP), using an NGN infrastructure and possibly an advertising overlay to improve the quality and availability, may sound as a good plan toward countries well-connected to the Internet. The Session Border Controller (SBC) is the element that allows an NGNSP to securely interconnect their core network to access networks, IP-enabled enterprises and peer NGNSP. SBC’s are also the ideal place to limit the total number of sessions being admitted from a given source domain, in order to protect the NGN core network from overflow.
