Obiettivo The objective of the project was to develop an open services architecture, and to show its practical relevance to the evolution of services for IBC. It achieved this objective by creating a common architectural approach and a system-level, object oriented architecture for service software; included in this architectural framework were both the control and management aspects associated with telecommunications software.Technical Summary During 1989, the project demonstrated the feasibility of creating an open services architecture and its supporting infrastructure for the IBC. The ROSA architecture was defined using an object-oriented paradigm (model). An object encapsulates data, processing and communication. The behaviour and structure of an object is described by its type using a formal specification language. The boundaries of the objects are opaque and only the services provided are visible to other objects. Objects interact by synchronously exchanging messages. Distinct instances of ROSA objects operate concurrently and can be distributed. Objects were classified into three categories: the Service Specification Framework (SSF), the Object Support Environment (OSE) and the Fundamental Object Mechanics (FOM). Objects in the SSF provide a pool of generic, telecom-oriented objects such as call handling and user agents. The OSE consists of entities that provide support for computation with objects in a distributed environment. The FOM is a set of primitives that are not subject to further object- oriented decomposition within the framework of the architecture. ROSA has addressed the architectural problems associated with the management of real physical entities in an IBC telecommunications environment. This has resulted in service management being an integral part of any service specification. Outline requirements for tool support were identified, to enable the realisation of services defined using the ROSA architecture. How such services may be specified by their behavioural and constructional properties can be determined by formal models and transformed into an abstract target language suitable for multi-vendor implementation. The successful provision of open services in IBC will depend critically upon the integration of three service specification perspectives into the overall ROSA architectural framework. R1068 ROSA project generated a new project - R1093 ROSA II. Campo scientifico natural sciencescomputer and information sciencessoftwareengineering and technologyelectrical engineering, electronic engineering, information engineeringinformation engineeringtelecommunications Programma(i) FP2-RACE 1 - Community programme (EEC) in the field of telecommunications technologies (RACE), 1987-1992 Argomento(i) Data not available Invito a presentare proposte Data not available Meccanismo di finanziamento Data not available Coordinatore BRITISH TELECOM PLC (BT) Contributo UE Nessun dato Indirizzo Regno Unito Mostra sulla mappa Costo totale Nessun dato Partecipanti (13) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto CET Portogallo Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Ericsson Telecom AB Svezia Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Fondazione "Ugo Bordoni" Italia Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato France Telecom Francia Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Gesellschaft für Mathematik und Datenverarbeitung mbH Germania Contributo UE Nessun dato Indirizzo Hardenbergplatz 2 10623 Berlin Mostra sulla mappa Costo totale Nessun dato IBM France SA Francia Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato PTT Netherlands Research Paesi Bassi Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Plessey Company plc Regno Unito Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato STC plc Regno Unito Contributo UE Nessun dato Indirizzo 1b Portland Place W1N 3AA London Mostra sulla mappa Costo totale Nessun dato Sistemas Expertos Spagna Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Synergie Informatique et Développement Francia Contributo UE Nessun dato Indirizzo 12 bis rue des Pavillons 92804 Puteaux Mostra sulla mappa Costo totale Nessun dato TFL Danimarca Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato Telefonica Sistemas SA Spagna Contributo UE Nessun dato Indirizzo Mostra sulla mappa Costo totale Nessun dato