ETSI TR 123 910-2000 数字蜂窝通信系统(第2+阶段).全球移动通信系统(UMTS).电路交换数据承载业务3GPP TR 23.910(版本3.2.0,1999年发布)
Digital Cellular Telecommunications System (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Circuit Switched Data Bearer Services 3GPP TR 23.910 Version 3.2.0 Release 1999