TMN describes some standards through the Worldwide Telecommunications Union (ITU-T) for that specs of the Telecommunications Management Network (hence, the acronym TMN). TMN covers an array of topics associated with the concepts for the way to handle telecommunication systems. The themes are formally described in standards that vendors should stick to.
The commercial need for TMN is restricted and it is, actually, decreasing. Nonetheless, TMN is broadly established like a reference framework that gives a obvious and broadly recognized terminology for management related topics.
The TMN hierarchy, is really a reference model that specifies some management layers that build on the top of one another and address different abstractions from the management space. Used, individuals layers aren’t always clearly separated within the systems that implement the related functionality. However, like a reference, the layer concept is invaluable.
Based on the TMN reference model, management systems are classified towards the following layers that perform specific functions and also have a specific scope:
Business Management: An administration layer accountable for the entire enterprise and never susceptible to standardization.
Service Management: An administration layer that’s worried about, and accountable for, the contractual aspects, including service order handling, complaint handling and invoicing, of services which are being presented to customers or open to potential new clients.
Network Management: An administration layer accountable for the management, including coordination of activity, of the network view.
Element Management: An administration layer which accounts for control over network elements with an individual or collective basis
Network Elements: An architectural indisputable fact that represents telecommunication equipment (or groups/areas of telecommunication equipment) and supports equipment or anything or categories of products considered of the telecommunications atmosphere that performs network element functions (NEFs).
It’s apparent that TMN focus isn’t business management. TMN rather concentrates on defining technically and conceptually the function from the devices, their configuration and monitoring, the configuration and monitoring from the network in general and lastly the configuration and monitoring of services. But exactly how are these characteristics mapped around the above layers? Most beginners get confused, here really are a couple of words which are more important layers that can help clarify things for that beginners:.
Element Management is worried with handling the individual devices within the network and keeping them running. Including functions to see and alter a network element’s configuration, to watch alarms and occasions send from elements, and instructing network elements to operate self-tests. Note, the element management layer doesn’t cover functions that cope with making certain overall network integrity.
Network Management involves managing relationships and dependencies between network elements, generally needed to keep finish-to-finish connectivity from the network. This layer is worried with maintaining your network running in general.
For instance, we could have a network with individual element configurations which are perfectly valid but that don’t complement correctly. As a result, the network won’t act as intended. Such these include static pathways over the network, timer values that should be tuned to prevent excessive timeouts and re-transmissions, etc. Within this cases, network management involves making certain that data flows over the network and reaches its destination with acceptable throughput and delay. Another illustration of a network management task is the treating of a network connection in general-for example, configuring it and monitoring it.
Finally, Service Management is worried with handling the services the network provides and making certain that individuals services are running and functioning as intended.
For instance, whenever a customer orders a telephone service, the service must be activated and become managed. For activating a telephone service, this might require numerous operations that should be transported out over the network so the services are activated: A telephone number should be allotted. The organization directory should be updated etc. Later, the consumer might call the service help-desk and complain the services are no longer working correctly. Troubleshooting the service will be needed to recognize the main reason for the issue and solve it. These service-related tasks develop the functionality that’s supplied by the network management layer.