Frame Relay - for Faster and More Efficient Data Communications ...

In Search of Managed ObjectsWalter Widl and Kidane Woldegiorgisare laid out in Recommendation M.3010.Management of the telecommunication network across standardised interfaces M.3020 identifies the management servicesthat represent the managementrequires that the necessary resources - in the form of Managed Objects - should alsobe standardised. A methodology for describing tools and processes is needed to tasks and describes the methodology to bedefine the Managed Objects that represent the manageable resources of the used in the specification of the interfaces.telecommunication network.M.3400 contains the list of TMN managementfunctions for the different TMN func­The derivation of the Managed Objects for the transport network is the main focus ofthis article.tional areas. Two recommendations thatprovide information models are in the finalprocess of approval. M.3100 provides ageneric network information model, andG.744 is the information model for SDHbasedtransport networks.telecommunication networkstelecommunication network managementstandardisationFig. 3Relations between CCITT's TMN RecommendationsIntroductionEfficient management of new and existingtelecommunication networks is one of themain concerns of administrations, manufacturersand standardisation bodies. Intensivestudies during the last few yearsseem to have finally resulted in workabletools for the description of networks andtheir management, as appears from the relationsbetween CCITT's TMN Recommendations,Fig. 3. The methodology andthe driving forces behind the definition ofthe standardised interfaces (both communicationprotocols and information model)Figs. 1 and 2 show an overview of themethodology and the processes involvedin deriving the Managed Objects. Fig. 1shows the associated tasks, which - in abroad sense - are seen as the functionaland information modelling processes.A number of TMN Management Servicesare defined by CCITT. "Management oftransport networks" is an example of sucha service. The functional modelling of thetransport network consists of a process,Fig. 2, in which - for each transport networklayer or sublayer - Trails and Con-ERICSSON REVIEW No. 1-2, 1992