ETSI EG 202 086-2008 语音处理,传输及质量方面,旨在提供"传统质量"通话服务的多个互联网络传输性能测试的目标和原则(2.0.0版本)
Speech Processing, Transmission and Quality Aspects (STQ); Objectives and principles for the transmission performance of multiple interconnected networks that aim to provide "traditional quality" telephony services