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G.109 : Definition of categories of speech transmission quality

Recommendation G.109

In force components
Title Status
G.109 (09/99)
Definition of categories of speech transmission quality   In force
G.109 (1999) Amendment 1 (01/07)
New Appendix I – The E-model-based quality contours for predicting speech transmission quality and user satisfaction from time-varying transmission impairments   In force


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Updated : 2011.03.14