ETSI TS 132 272-2009 数字蜂窝通信系统(第2+阶段).全球移动通信系统(UMTS).长期演进技术.通信管理.计费管理.手机即按即说(PoC)的计费(版本7.5.0).3GPP TS 32.272(版本7.5.0,第7次发布)
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Telecommunication management; Charging management; Push-to-talk over Cellular (PoC) charging V7.5.0; 3GPP TS 32.272 version 7.5.0 Release 7