The future advanced public communications network will be built on three pillars bandwidth, high-speed switching and routing and network intelligence. The first of these pillars is provided by fiber optics and a plethora of high-speed transmission schemes; the second increasingly provided by ATM (Asynchronous Transfer Mode) and the new generation of routers. The third pillar will be the Advanced Intelligent Network (AIN), a concept that is leading to new market opportunities as technological development and deregulation progress and as customs demands become more sophisticated.
The AIN is more than just network architecture - It is a complete framework for the creation, provisioning and management of advanced communications services.
This seminar discusses how the network has evolved from one in which switch-based service logic provided services to one in which service-independent advanced intelligent (AIN) capabilities allow for service creation and deployment.
As the AIN evolves, service providers will be faced with many opportunities and challenges. While the IN provides a network capability to meet the ever-changing needs of customers, network intelligence is becoming increasingly distributed and complicated. For example, third-party service providers will be interconnecting with traditional operating company networks. Local number portability (LNP) presents many issues that can only be resolved in an AIN environment to meet government mandates. Also, as competition grows with companies offering telephone services previously denied to them, the AIN provides a solution to meet challenge.
INTRODUCTION
A network that allows functionality to be distributed flexibly at a variety of nodes on and off the network and allows the architecture to be modified to control the services.
Making modifications to large telephone switches is prohibitively expensive it usually costs too much and takes too long. Morever some niche services do not generate, the kind of revenues that would justify a costly and complex addition to the switch software. Advanced Intelligence Network (AIN) alleviates this problem by distributing call-processing task to other network platforms than switching systems.
Advanced Intelligence Network is an extension of the intelligent network (IN) technology and enables launching new services by the operating phone companies. AIN involves efforts by Bellcore to move call-processing-related intelligence from the switching point (SP) to another platform called the Service Control Point (SCP). The SCP includes the routing and service database for services that are more advanced than those performed by the SP. The SP is provisioned with certain types of triggers such as Off-Hook Delay (OHD), Off-Hook Immediate (OHI) which will cause the telephone call to be routed according to the special routing instructions as determined by the SCP. The SCP and SP communicate with each other using a protocol called Transaction Capabilities Application Part (TCAP) layer of the protocol suite Signaling System No.7 (SS7).
Because the SCP is connected to the SCP via a data communications link, if additional input is needed for the SCP to make a routing decision, it must have an interface with the customer. An Intelligent Peripheral (IP) provides a direct interface between the SCP and the customer. The SCP and the IP communicate with each other using a protocol, called 1129+, which was designed and developed by Bellcore. Additionally, the Intelligent Peripheral can communicate with the switching network via the ISDN User Part (ISDN-UP or ISUP), which is the international standard for out-of-band signaling method.
Another network element, the Service Management System (SMS) functions as an administrative entity to manage the SCP. Information from the SMS can also be used to provision the switches for the new services.
New services can be defined on a, platform called the Service Creation Environment (SCE). The SCE provides a graphical user interface. In some architecture, the SCE and the SMS as well as the service provisioning features are combined in one workstation.
In simple words, we can say that an intelligent network (IN) is a service-independent telecommunications network. That is, intelligence is taken out of the switch and placed in computer nodes that are distributed throughout the network. This provides the network operator with the means to develop and control services more efficiently. New capabilities can be rapidly introduced into the network. Once introduced, services are easily customized to meet individual customer's needs.
Next :Advanced Intelligence Network (AIN) ARCHITECTURE
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