Pál Varga, István Moldován, Gergely Molnár
Complex Fault Management Solution for VoIP Services
The more widespread the quality VoIP solutions are getting, the more users utilize these services – without even noticing it. High QoS requirements necessitate adequate Operations and Maintenance (OAM) support, as well as a fault management system specialized for VoIP services. Our current study describes a complex fault management system customized for VoIP service providers. This system covers the functions of detecting and processing of alarms, moreover, it features a unique root cause analysis subsystem, also. The solution integrates the classic passive, rule based event processing approach with a method operating by active, fault localizing checks. The appropriate elementary checks are scheduled by an approach novel in the Fault Management field: Petri nets. On one hand the eye-catching nature of this solution makes root cause analysis steps easy to understand, and on the other hand it is fast, due to the simultaneous submission of active checks.