ETSI TS 133 203-2003 数字蜂窝通信系统(第2+阶段).全球移动通信系统(UMTS).3G安全性.基于IP业务的接入安全.3GPP TS 33.203(版本5.7.0,第5次发布)
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); 3G security; Access security for IP-based services 3GPP TS 33.203 Version 5.7.0 Release 5