标准号:ITU-T G.109-1999
中文标准名称:语音传输质量的类别定义
英文标准名称:Definition of Categories of Speech Transmission Quality - Series G: Transmission Systems and Media, Digital Systems and Networks International Telephone Connections and Circuits - General Definitions (Study Group 12; 11 pp)
标准状态:A
标准类型:国际标准