ETSI TS 129 527-2009 数字蜂窝通信系统(第2+阶段).全球移动通信系统(UMTS).电信和互联网融合业务及高级网络协议(TISPAN).在IP多媒体(IM)核心网(CN)子系统和电路交换(CS)网络之间的SIP-ISUP互通核准本.3GPP
Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); TISPAN; Endorsement of the SIP-ISUP Interworking between the IP Multimedia (IM) Core Network (CN) subsystem and Circuit Switched (CS) networks [3GPP