ETSI TS 122 066-2001 数字蜂窝通信系统(第2+阶段)(GSM).全球移动通信系统(UMTS).支持手机带号转网(MNP).业务描述.第1阶段.3GPP TS 22.066(版本4.0.0,第4次发布)
Digital Cellular Telecommunications System (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Support of Mobile Number Portability (MNP); Service Description; Stage 1 3GPP TS 22.066 Version 4.0.0 Release 4