ETSI TS 129 204-2017 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);7号信令系统(SS7)安全网关;体系结构、功能描述和协议细节(V14.0.0;3GPP TS 29.204 版本14.0.0 发行版本14)
Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Signalling System No. 7 (SS7) security gateway; Architecture@ functional description and protocol details (V14.0.0; 3GPP TS 29.204 version 14.0