Abstract
This article summarizes the work carried out within the ACTS project INSIGNIA, which is targeted at the provision of interactive multimedia services through IN and B-ISDN integration. The basic concepts regarding the integrated approach are discussed with emphasis on the functional architecture. This discussion is followed by a presentation of IN multimedia services which were created based on these principles. An overview of the real-life trials which were conducted on a pan-European basis in order to evaluate the INSIGNIA services is also given. The results of this evaluation are examined from a variety of viewpoints, including functional architecture, user and network equipment, service logic programs and applications, as well as user acceptance and network performance.
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