ETSI TS 132 240-2017 数字蜂窝通信系统(第2+阶段)(GSM全球通信系统);通用移动通信系统(UMTS);长期演进技术(LTE);通信管理;计费管理;计费架构和原理(V14.3.0;3GPP TS 32.240版本14.3.0 发行版本14)
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Telecommunication management; Charging management; Charging architecture and principles (V14.4.0; 3GPP TS 32.240 version 14.4.0 Release 14