ETSI TS 124 072-2002 数字蜂窝通信系统(第2+阶段).全球移动通信系统(UMTS).呼叫改发补充业务.第3阶段.3GPP TS 24.072(版本4.0.1,第4次发布)
Digital Cellular Telecommunications System (Phase 2+); Universal Mobile Telecommunications System (UMTS); Call Deflection Supplementary Service; Stage 3 3GPP TS 24.072 Version 4.0.1 Release 4