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3

Intelligent Networks

3.1 INTRODUCTION

The Intelligent Network (IN) standards are divided into the Telcordia

standardisation called Advanced Intelligent Networks (AIN) and the

International Telecommunications Union telecommunications (ITU-T)

IN standards capability sets. The Telcordia standards are used mainly

in North America, whilst the ITU-T standards are relevant in pretty

much the rest of the world. Other work has taken place notably by a

group known as TINA-C, the Telecommunications Information Network￾ing Architecture Consortium, looking at the longer term architectures for

distributed intelligence in telecommunications networks.

The early implementations of IN were based on a database performing

number translation of non-geographic numbers such as the US 800

services, and these basic services continue today. These services were

built on a network enabled by signalling system number 7 (SS#7) and

IN continues to build on SS#7. More recently IN implementations cover

a more extensive set of services from time of day routing plans, find-me

follow-me services, pre-paid mobile services (wireless intelligent

networks), calling card services, to advanced network-based call centre

agent skill routing.

The basic aim of IN is to decouple the service logic from the control of

the switch fabric, a stage further than could be achieved by the use of a

stored program controller, and to create a platform that allows new

services to be constructed from smaller building blocks. This later capabil￾ity is expressed in Q.1201 as ‘‘integrated service creation and implemen￾tation by means of the modularised reusable network functions’’. The

principle business aim of IN is the removal of a dependency on switch

manufacturers for the provision of new services. In order to achieve this

Next Generation Network Services

Neill Wilkinson

Copyright q 2002 John Wiley & Sons, Ltd

ISBNs: 0-471-48667-1 (Hardback); 0-470-84603-8 (Electronic)