ETSI EG 202 057-3-2005 语音处理,传输和质量方面(STQ).和用户相关的QoS参数的定义和测量.第3部分:公共陆地移动网(PLMN)的QoS参数(版本1.1.1)
Speech Processing, Transmission and Quality Aspects (STQ); User related QoS parameter definitions and measurements; Part 3: QoS parameters specific to Public Land Mobile Networks (PLMN) (V1.1.1)