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ITU-T E.424 Test calls
ITU-T E.426 General guide to the percentage of effective attempts which should be observed for international telephone calls
ITU-T E.428 Connection retention
ITU-T E.700 Framework of the E.700-series recommendations
ITU-T E.701 Reference connections for traffic engineering
ITU-T E.711 User demand modelling
ITU-T E.712 User plane traffic modelling
ITU-T E.810 Framework of the recommendations on the serveability performance and service integrity for telecommunication services
ITU-T E.820 Call models for serveability and service integrity performance
ITU-T E.830 Models for the specification, evaluation and allocation of serveability and service integrity
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