TS : Network architecture 3GPP [4] TS : Signalling flows for the IP multimedia call control based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 3GPP [5]
TS : IP Multimedia Call Control Protocol based on SIP and SDP 3GPP [6] TS : 3G security; Access security for IP-based services 3GPP [7] TS : Coexistence between TISPAN and 3GPP authentication schemes 3GPP [8] RFC 3261: SIP: Session Initiation Protocol IETF [9] 《统一IMS的功能体系架构(第一阶段)》 CCSA 术语、定义和缩略语 下列术语、定义和缩略语适用于本标准: 缩略语 英文 中文 AS Application Server 应用服务器 BGCF Breakout Ga