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ASTN use cases examples

ASTN use cases examples. Georg Lehr, T-Systems. Purpose and scope. as a lot of work is already ongoing in ITU-T and TMF. NOBEL needs to focus information modelling work, Proposal for selection of areas for studies:

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ASTN use cases examples

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  1. ASTN use cases examples Georg Lehr, T-Systems

  2. Purpose and scope • as a lot of work is already ongoing in ITU-T and TMF. • NOBEL needs to focus information modelling work, • Proposal for selection of areas for studies: • concentrate ASTN aspects which require changes in the way how the network is managed: e.g.: • Visibility of connections (in the case of switched connections), • Maintenance philosophy in ASTNs, • Provisioning of end-to-end connections over several operator or vendor domains (E-NNI), • Neighbour and Service Discovery. • describe the use cases in simple natural language • use cases depend on migration steps (called “scenarios”). • example: visibility of switched connections • scenarios represent different distribution between management plane and control plane • this distribution has impact on information model

  3. Scenarios (Examples) • Current transport networks • ASTN switched Service; Scenario 1: visibility on switched connections as in current transport networks • ASTN switched Service; Scenario 2: visibility on switched connections as in current transport networks; but only „on demand by reference “ • ASTN switched Service; Scenario 3: visibility like for a call in the telephone network • E-NNI • intra carrier • inter-carrier

  4. Use Cases (Examples) • Scenario 1 • Use case connection setup • Use case policy • Use case charging • Use case maintenance • ....

  5. Further steps • agreement on the approach, scope, and the structure of the document • overview on the relevant scenarios and use cases • link this activity to ongoing work on centralized versus distributed implementation of control plane components [1]. • add contributions on other items (such as E-NNI, ND and SD). • agree on a terminology for the use cases that is consistent with standards (e.g. [3]). • find more scenarios and use cases • work on a deeper level of specification (e.g. using the material given in [2]). [1]Giovanni Fiaschi et al.: Considerations on Centralized versus Distributed Implementations of Control Plane Components; September 2004. [2]Alistair Cockburn: Winman Use case tutorial (Source: Abdelkader Hajjaoui). [3]TMF MTNM Control Plane Sub-team “Management of Control Plane”, September 15, 2004

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