ETSI TR 149 995-2005 数字蜂窝通信系统(第2+阶段).支持GPRS的改进版PLMN和原先的GPRS移动之间的互通3GPP TR 49.995(版本5.0.0,第5次发布)
Digital cellular telecommunications system (Phase 2+); Interworking between modified PLMN supporting GPRS and legacy GPRS mobiles 3GPP TR 49.995 Version 5.0.0 Release 5