开始IMS学习-相关名词和术语（持续更新）
2011-08-18 18:41 shaobin0604 阅读(329) 评论(0) 编辑 收藏 举报一些名词和术语的翻译
- IMS(IP Multimedia Subsystem) IP 多媒体子系统 http://en.wikipedia.org/wiki/IP_Multimedia_Subsystem
- PSTN(Public Switched Telephone Network) 公共交换电话网 http://en.wikipedia.org/wiki/Public_switched_telephone_network
- ISDN(Integrated Services Digital Network) 综合业务数字网 http://en.wikipedia.org/wiki/Integrated_Services_Digital_Network
- VoIP(Voice over IP) 基于IP的话音 http://en.wikipedia.org/wiki/Voice_over_Internet_Protocol
- POTS(Plain Old Telephone Service) 老式电话业务 http://en.wikipedia.org/wiki/Plain_old_telephone_service
- SIP(Session Initiation Protocol) 会话初始化协议 http://en.wikipedia.org/wiki/Session_Initiation_Protocol
- GSM(Global System For Mobile Communication) 全球移动通信 http://en.wikipedia.org/wiki/Global_System_for_Mobile_Communications
- GPRS(General Packet Radio Service) 通用分组无线业务 http://en.wikipedia.org/wiki/General_Packet_Radio_Service
- UTMS(Universal Mobile Telecommunication System) 通用移动通信系统 http://en.wikipedia.org/wiki/Universal_Mobile_Telecommunications_System
- RAN(Radio Access Network) 无线接入网 http://en.wikipedia.org/wiki/Radio_access_network
- CN(Core Network) 核心网 http://en.wikipedia.org/wiki/Core_network
- CSCF(Call Session Control Function) 呼叫会话控制功能 http://www.hudong.com/wiki/cscf
- HLR(Home Location Register) http://en.wikipedia.org/wiki/Network_switching_subsystem#Home_location_register_.28HLR.29
- HSS(Home Subscriber Server) http://en.wikipedia.org/wiki/IP_Multimedia_Subsystem#HSS_-_Home_Subscriber_Server
- SLF(Subscriber Location Function) http://en.wikipedia.org/wiki/Subscriber_Location_Function
- MRFC(Media Resource Function Controller)
- MRFP(Media Resource Function Processor)
- CS(Circuit Switched)
- PS(Packet Switched)
- PDF(Policy Decision Function) – authorizes media plane resource e.g. quality of service(QoS) over the media plane. It is used for policy control, bindwith management
- THIG(Topology Hiding Inter-network Gateway)
- BGCF(Breakout Gateway Control Function) - a SIP proxy which processes requests for routing from an S-CSCF when the S-CSCF has determined that the session cannot be routed using DNS or ENUM/DNS. It includes routing functionality based on telephone numbers.
- MGCF(Media Gateway Controller Function) - SIP endpoint that does call control protocol conversion between SIP and ISUP/BICC and interfaces with the SGW over SCTP. It also controls the resources in a Media Gateway (MGW) across an H.248 interface.
- MGW(Media Gateway) - A Media Gateway (MGW) interfaces with the media plane of the CS network, by converting between RTP and PCM. It can also transcode when the codecs don't match (e.g. IMS might use AMR, PSTN might use G.711).
- Signalling Gateway (SGW) interfaces with the signalling plane of the CS. It transforms lower layer protocols as Stream Control Transmission Protocol (SCTP, an Internet Protocol (IP) protocol) into Message Transfer Part (MTP, an Signalling System 7 (SS7) protocol), to pass ISDN User Part (ISUP) from the MGCF to the CS network.
