ETSI TS 128 062-2017 数字蜂窝通信系统(第2+阶段)(GSM 全球通用系统);通用移动通信系统(UMTS);语音编解码器的带内级联式自由操作(TFO);服务描述;第3阶段(V14.0.0;3GPP TS 28.062版本14.0 发行版本14;包括软盘)
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Inband Tandem Free Operation (TFO) of speech codecs; Service description; Stage 3 (V14.0.0; 3GPP TS 28.062 version 14.0.0 Release 14; Includes