ETSI TR 102 430-2005 语音的处理,传输与质量方面(STQ).分组技术(包括互联网和下一代网络)中有关语音质量方面的基本问题(版本1.1.1)
Speech Processing, Transmission and Quality Aspects (STQ); Basic Issues concerning the Quality of Speech over Packet Technology (both Internet and Next Generation Networks) (V1.1.1)