13 Scope/Responsibility Management systems consists of the fol-lowing components (system responsibility)Operations System (OS)Operations Support System (OSS)Data Communication Network (DCN)Workstation (WS)Network Elements (NE)Management functionality
14 Operations SystemOperations System (OS) or more recently referred to as Operations Support System (OSS). Is IT-systems which allow operators (either human or external programs) to perform management operations on the managet telecommunication network.
15 Data Communication Network Data Communication Network (DCN), which is a data communication network used to establish communcation between the operations support system and the managed equipment in the telecommun-ications network, and also between the attached workstations or external man-agement systems and the operations support system
16 WorkstationWorkstation (WS). Recent management systems are typically using a graphical user interface, where information is presented as icons and colours are used to indicate status. Commands are often performed using a mouse with point-and click. The workstation is partly within the otted linie, it will typically be based on com-mercial of the shelf product with only a minor part being network management specific.
17 Network ElementsNetwork Elements (NE) is the common name for pieces of equipment constituting the telecom-munications network controlled and monitored. On the figure such units are exemplified by Exchange and Transmission systems. Many other types of equipment can occur as network elements, multiplexers, IP-routers, ADSL DSLAMs, ATM switches etc. They are all partly included in management, as they are offering management facilities, which can be accessed remotely.
18 Management Break Down Management is frequently divided in two ways: functional areas: functionality providedTMN logical layers: levels of abstraction
19 Management Functional Areas Fault ManagementConfiguration ManagementAccounting ManagementPerformance ManagementSecurity Management
20 Functional Model OSI Functional Model Fault Management Configuration ManagementAccounting ManagementPerformance ManagementSecurity Management
24 Organizational Model Manager Agent Managed object Sends requests to agentsMonitors alarmsHouses applicationsProvides user interfaceAgentGathers information from objectsConfigures parameters of objectsResponds to managers’ requestsGenerates alarms and sends them to mangersManaged objectNetwork element that is managedHouses management agentAll objects are not managed / manageable
25 Systems Management Model Managed open systemManaging open system(manager role)MIS-userManagedobjectsNotificationsemittedmanagementoperationsPerforming(agent role)CommunicatingManagement operations