开始IMS学习-相关名词和术语（持续更新）

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.

相关资源

移动通信网络结构简介
UMTS移动核心网结构与演进