Elucidation of an ISDN performance management model

A model for ISDN (integrated services digital network) performance management is discussed. According to this model, the three most important elements of performance management, in order of their importance, are autonomous receipt of failure and service degradation reports by the automated performance management environment (APME); development of tools to sectionalize problems in different layers of protocols; and incorporating correlation, analysis, and action functions, usually performed manually by technicians, into the APME. ISDN performance management tools can be organized into a hierarchy based on the open systems interconnection (OSI) layer model. The digital technology of the ISDN allows many of these tools to be designed in such a way that the service degradations are detected and reported to enable a pro-active approach, which maintains the service quality and isolated for repair the sections or elements causing the degradation in a way that is nondisruptive to service