An Architectural Description of Intelligent Network Features and Their Interactions

A brief explanation is given of the language ANISE (Architectural Notions In Service Engineering) that can be used to describe generic services as well as telecommunications services. The ANISE approach embodies a feature calculus that can be used to structure and analyse services. A description is given of the Plain Old Telephone Service using ANISE. This is extended for a number of typical features drawn from the Intelligent Network. It is shown how the description of features permits static and dynamic analysis of interactions. A partial semantics is given for ANISE using LOTOS (Language of Temporal Ordering Specification). This allows feature descriptions to be translated into LOTOS and analysed formally.