This Recommendation describes methods and procedures for conducting subjective evaluations of transmission quality. The main revision encompassed by this version of this Recommendation is the addition of an annex describing the Comparison Category Rating (CCR) procedure. Other modifications have been made to align this Recommendation with recent revision of Recommendation P.830.
ITU-T P.800 SPANISH-1996 Referenced Document
ITU Data architecture of one software system Study Group 17*， 2007-02-01 Update
ITU-T G.113-1996 Transmission Impairments - Transmission Systems and Media General Characteristics of International Telephone Connections and International Telephone Circuits (Study Group 12) 33 pp
ITU-T G.722-1988 7 kHz Audio-Coding within 64 kBit/s - General Aspects of Digital Transmission Systems; Terminal Equipments Study Group XV and XVIII; Covering Note May 30, 2003
ITU-T G.728-1992 Coding of Speech at 16 kBit/s Using Low-Delay Code Excited Linear Prediction General Aspects of Digital Transmission Systems; Terminal Equipments Study Group XV; 65 pp
ITU-T G.729-1996 Coding of Speech at 8 kbit/s Using Conjugate-Structure Algebraic-Code-Excited Linear-Prediction (CS-ACELP) - General Aspects of Digital Transmission Systems Study Group 15; 39 pp
ITU-T P.10-1993 Vocabulary of Terms on Telephone Transmission Quality and Telephone Sets - Telephone Transmission Quality Vocabulary and Effects of Transmission Parameters on Customer Opinion of Transmission Quality and Their Assessment (Study Group XII; 18 pp)
ITU-T P.11-1993 Effect of Transmission Impairments - Telephone Transmission Quality - Vocabulary and Effects of Transmission Parameters on Customer Opinion of Transmission Quality and Their Assessment (Study Group XII) 35 pp
ITU-T P.48-1988 SPECIFICATION FOR AN INTERMEDIATE REFERENCE SYSTEM
ITU-T P.56-1993 Objective Measurement of Active Speech Level - Telephone Transmission Quality Objective Measuring Apparatus (Study Group XII) 15 pp
ITU-T P.78-1993 Subjective Testing Method for Determination of Loudness Ratings in Accordance with Recommendation P.76 - Telephone Transmission Quality Measurements Related to Speech Loudness (Study Group XII) 19 pp