Error on the reconstituted frequencyĪpplication rules for Automatic Level Control Devices Characteristics of national circuits on carrier systems The content of this Recommendation is now covered by ITU-T G.120 Influence of national systems on stability and talker echo in international connections Loudness ratings (LRs) of national systems ![]() Transmission characteristics of national networks Transmission aspects of unbalance about earth Transmission performance objectives applicable to end-to-end international connections Mean active speech level for announcement and speech synthesis systems Transmission impairments due to speech processing Loudness ratings (LRs) in an international connection Transmission planning aspects of echo cancellersĭefinition of categories of speech transmission quality Guidance for assessing conversational speech transmission quality effects not covered by the E-model The E-model: a computational model for use in transmission planningĪpplication of the E-model: A planning guide Hypothetical reference connection for crosstalk studies Transmission performance objectives and Recommendations The use of the decibel and of relative levels in speechband telecommunications ![]() Definitions used in Recommendations on general characteristics of international telephone connections and circuits Transmission systems and media, digital systems and networks
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