1. A method for modeling and analyzing additional services incorporated into a Voice-over-IP (VoIP) configuration composed of a plurality of components, said method comprising the steps of: representing selected ones of the plurality of components and relationships among the selected components of the VoIP configuration in a model on one or more computers, wherein said component representations are selected from the group of configuration non-specific representations consisting of: VoIP VoiceMailService, VoIPVoiceConferenceService, ITServices, ERPServices, CRMServices, WebServices and SupportServices, and wherein the representations of relationships are selected from the group of configuration non-specific representations consisting of: HostedBy/HostsServices and Integrates/IntegratedIn; providing a mapping between a plurality of first causing events and a plurality of second symptom events occurring in the selected components in the VoIP configuration, said mapping representing the relationships along which the first events propagate among the selected components in the VoIP configuration; and determining at least one first causing event based on at least one of the plurality of second symptom events by determining a measure between each of a plurality of relationship values associated with the plurality of first causing events and the plurality of second symptom events to analyze the VoIP configuration.