Page 561 - Handbook of Modern Telecommunications
P. 561

4-92                    CRC Handbook of Modern Telecommunications, Second Edition


                                       Definition of QoS Metric


                                     Determination of Data Sources

                                                               Technical
                                     Selection of Measurement Tools  Preparation

                                       Evaluation of Test Results



                                       Contract Negotiation and  Legal
                                         Signing the Contract  Preparation

                                          Measurement and
                                             Reporting
                                                               Operations

                                             Violation  No
                                           of SLA Metrics
                                                ?

                                             Yes
                                                              Executing
                                            Corrections  Yes  One-time
                                             Required        Corrections
                                                ?

                                             No


                                            Reimburse-  Yes  Decision on
                                              ment           Measurement
                                                ?

                                              No


                                     Yes    Are Changes
                                             Required          Operations
                                                ?
                                                 No

            FIGu RE 4.5.11  Detailed display of the service-level management process.
              Contract negotiation and signing the contract: All items in Section 4.5 apply.
              Measurements and reporting: The detailed process description includes the measurement data sources,
            the periodicity of measurements, data processing, combining different databases, and finally reporting.
            Feedback from this activity decides whether service-level agreements have been met or violated.
              Corrections in SLAs: If corrections and rectification are required, they should be executed in quasi–
            real time. Measures include:
              •   Completing missing measurement data
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