ETSI TS 122 072-2017 数字蜂窝通信系统(第2+阶段)(GSM全球移动通信系统);通用移动通信系统(UMTS);呼叫转移(CD)业务描述;第1阶段(V14.0.0;3GPP TS 22.072,版本14.0.0 发行版本14)
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Call Deflection (CD) service description; Stage 1 (V14.0.0; 3GPP TS 22.072 version 14.0.0 Release 14)