3GPP |
3rd Generation Partnership Project |
第三代合作伙伴计划 |
3PTY |
Three Party Service |
三方业务 |
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A |
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AA |
Administrative Authority |
管理机构 |
AAA |
Authority Authentication and Accounting Server |
认证、授权和计费服务器 |
AAL |
ATM Adaptation Layer |
ATM适配层 |
AAS |
Adaptive Assembly Size |
自适应组装长度 |
ABR |
Available Bit Rate |
有效比特率 |
AFI |
Authority and Format Identifier |
授权和格式标识符 |
AG |
Access Gateway |
接入网关 |
AGCH |
Access Grant Channel |
允许接入信道 |
AH |
Authentication Header |
认证报头 |
AL |
Assemble Language |
汇编语言 |
ALT |
Automatic Link Transfer |
自动链路转移 |
AN |
Access Network |
接入网 |
AON |
All Optical Network |
全光网络 |
API |
Application Programming Interface |
应用程序编程接口 |
APS |
Automatic Protection Switching |
自动保护倒换 |
ARIS |
Aggregate Route－based IP Switching |
聚类基于路由的IP交换 |
ARP |
Address Resolution Protocol |
地址解析协议 |
AS |
Access Switch |
选面级交换器 |
AS |
Autonomous System |
自治系统 |
AS |
Application Server |
应用服务器 |
ASL |
Analogue Subscriber Line |
模拟用户接口电路 |
ASON |
Automatically Switched Optical Network |
自动交换光网络 |
AT |
Analog Trunk |
模拟中继 |
ATD |
Asynchronous Time Division |
异步时分复用 |
ATM |
Asynchronous Transfer Mode |
异步转移模式 |
ATM |
Asynchronous Time Division |
异步时分复用 |
ATM-SAP |
ATM-Service Access Point |
ATM业务接入点 |
AuC |
Authentication Centre |
鉴权中心 |
AUU |
ATM-User-to-ATM-User |
ATM用户至ATM用户指示 |
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B |
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BCCH |
Broadcast Control Channel |
广播控制信道 |
BCH |
Broadcast Channel |
广播信道 |
BCP |
Burst Control Packet |
突发控制分组 |
BECN |
Backward Explicit Congestion Notification |
后向显示拥塞通知 |
BGP |
Border Gateway Protocol |
边界网关协议 |
BHCA |
Busy Hour Call Attempt |
呼叫处理能力 |
BICC |
Bearer Independent Call Control protocol |
与承载无关的呼叫控制协议 |
B-ISDN |
Broadband--Integrated Services Digital Network |
宽带综合业务数字网 |
BP |
Burst Packet |
突发分组 |
BS |
Base Station |
基站 |
BSC |
Base Station Controller |
基站控制器 |
BSI |
Base station Signaling Interface |
基站信令接口 |
BSS |
Base Station System |
基站系统 |
BT |
Burst Tolerance |
突发容限 |
BTS |
Base Transceiver Station |
基站收发信台 |
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C |
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CATV |
Cable Television |
有线电视网 |
CBR |
Constant Bit Rate |
恒定比特率 |
CC |
Congestion Control |
拥塞控制 |
CCCH |
Common Control Channel |
公共控制信道 |
CCH |
Control Channel |
控制信道 |
CCI |
Connected Control Interface |
连接控制接口 |
CD |
Collision Detection |
冲突检测 |
CDMA |
Code Division Multiple Access |
码分多址 |
CDVT |
Cell Delay Variation Tolerance |
信元时延变化容限 |
CE |
Customer Edge |
用户边缘设备 |
CES |
Circuit Emulation Service |
电路仿真业务 |
CFB |
Call Forwarding Busy |
遇忙呼叫前移 |
CFNR |
Call Forward No Reply |
无应答呼叫前移 |
CFU |
Call Forward Unconditional |
无条件呼叫前移 |
CI |
Congestion Indication |
拥塞指示 |
CID |
Channel Identifier |
通道标识 |
CIDR |
Classless InterDomain Routing |
无类域间路由选择 |
CL |
Connection Less |
无连接方式 |
CLIP |
Calling Line Identification Presentation |
主叫线识别提供 |
CLIP/IPOA |
Classical IP Over ATM |
基于ATM的经典IP |
CLIR |
Calling Line Identification Restriction |
主叫线识别限制 |
CLP |
Cell Loss Priority |
信元丢失优先 |
CLR |
Cell Loss Ratio |
信元丢失率 |
CM |
Control Memory |
控制存储器 |
CMR |
Cell Misinsertion Rate |
信元误插率 |
CN |
Core Network |
核心网 |
COLP |
Calling Line Identification Presentation |
被接线识别提供业务 |
COLR |
Calling Line Identification Restriction |
被接线识别限制业务 |
COPS |
Common Open Policy Service |
公共开放策略服务 |
CoS |
Class of Service |
服务等级 |
CP |
Control Plane |
控制平面 |
CPCS |
Common Part Convergence Sublayer |
公共部分会聚子层 |
CPS |
Common Part Sublayer |
公共部分会聚子层 |
CR-LDP |
Constraint-based Routing |
LDP协议的扩展 |
CS |
Circuit Switching |
电路交换 |
CS |
Convergence Sublayer |
会聚子层 |
CS |
Carrier Sense |
载波监听 |
CSCF |
Call Session Control Function |
呼叫会话控制功能 |
CSI |
Convergence Sublayer Indicator |
会聚子层标识 |
CSMA/CD |
Carrier Sense Multiple Access/Collision Detect |
载波监听多路访问/冲突检测 |
CTD |
Cell Transfer Delay |
信元传输时延 |
CUG |
Closed User Group |
闭合用户群 |
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D |
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DARPA |
Department of Defense Advanced Research Project Agency |
美国国防部高级研究计划局 |
DBR |
Deterministic Bit Rate |
恒定比特率 |
DCC |
Data Country Code |
数据国家编码 |
DCCH |
Dedicated Control Channel |
专用控制信道 |
DCE |
Data Circuit-terminating Equipment |
数据电路终接设备 |
DDN |
Digital Data Network |
数字数据网 |
DFI |
Domain specific part Format Identifier |
域特定部分格式标识符 |
DISC |
Disconnect |
断开连接 |
DLCI |
Data link connection identifier |
数据链路连接标识符 |
DM |
Disconnect Mode |
断开模式 |
DNS |
Domain Name Systems |
域名服务系统 |
DoD |
Downstream-on-Demand |
下游按需方式 |
DOS |
Digital Optical switches |
数字光开关 |
DSE |
Digital Switching Element |
数字交换单元 |
DSL |
Digital Subscriber Line |
数字用户环路 |
DSN |
Digital Switching Network |
数字交换网络 |
DSP |
Domain Specific Part |
域特定部分 |
DSS |
Distributed Sample Scrambling |
分散抽样扰码 |
DT |
Digital Trunk |
数字中继 |
DTE |
Digital Terminal Equipment |
数据终端设备 |
DTMF |
Dual Tone Multi Frequency |
双音多频 |
DU |
Downstream Unsolicited |
下游自主方式 |
DWDM |
Dense Wavelength Division Multiplexing |
密集波分复用 |
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E |
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EBGP |
External Border Gateway Protocol |
外部边界网关协议 |
EIR |
Equipment Identity Register |
设备识别寄存器 |
E-NNI |
Exterior-Network Node Interface |
外部网络节点接口 |
ESI |
End System Identify |
端系统标识符 |
ETSI |
European Telecommunications Standard Institute |
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F |
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FACCH |
Fast Associated Control Channel |
快速随路控制信道 |
FAS |
Fixed Assembly Size |
固定组装长度 |
FAT |
Fixed Assembly Time |
固定组装时间 |
FCCH |
Frequency Correction Channel |
频率校准信道 |
FCS |
Frame Check Sequence |
帧校验序列 |
FDD |
Frequency Division Double |
频分复用法 |
FDDI |
Fiber Distributed-Data Interface |
光纤分布式数据接口 |
FDL |
Fiber Delay Line |
光纤延迟线 |
FEC |
Forwarding Equivalence Class |
转发等价类 |
FECN |
Forward Explicit Congestion Notification |
前向显示拥塞通知 |
FMC |
Fixed-Mobile Convergence |
固网移动融合 |
FPS |
Fast Packet Switch |
快速分组交换 |
FR |
Frame Reject |
帧拒绝 |
FR |
Frame Relay |
帧中继 |
FSC |
Fiber Switch Capable |
光纤交换接口 |
FTN |
FEC TO NHLFE MAP |
FEC到NHLFE的映射 |
FTP |
File Transfer Protocol |
文件传输协议 |
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G |
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GBSC |
General Broadcast Signaling Cell |
通用广播信令信元 |
GFC |
General Fluid Control |
基本流量控制 |
GFI |
General Format Identifier |
通用格式标识符 |
GFR |
Guaranteed Frame Rate |
保证帧速率 |
GGSN |
Gateway GPRS Support Node |
GPRS网关支持节点 |
GMPLS |
Generalized Multi Protocol Label Switching |
通用多协议标记交换 |
GMSC |
Gateway MSC |
网关移动交换中心 |
GS |
Group Switch |
选组级交换器 |
GSM |
Global System for Mobile communication |
全球通 |
GSMP |
General Switch Management Protocol |
通用交换机管理协议 |
GSTN |
General Switch Telephone Network |
电话交换网 |
GUI |
Graphics User Interface |
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H |
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HDLC |
High-Level Data Link Control |
高级数据链路控制规程 |
HEC |
Header Error Control |
信头差错控制 |
HLL |
High Level Language |
高级语言 |
HLR |
Home Location Register |
归属位置寄存器 |
HMSC |
Home MSC |
归属移动交换中心 |
HSDPA |
High Speed Downlink Packages Access |
高速下行分组接入 |
HSS |
Home Subscriber Server |
归属用户服务器 |
HSUPA |
High Speed Uplink Packet Access |
高速上行分组接入 |
HTTP |
Hyper-Text Transport Protocol |
超文本传输协议 |
HW |
HighWay |
高速母线 |
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I |
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IAD |
Integrated Access Device |
综合接入设备 |
IBT |
Intrinsic Burst Tolerance |
固有突发容限 |
IC |
Idle Cell |
空闲信元 |
ICD |
International Code Designator |
国际代码指示 |
ICMP |
Internet Control Message Protocol |
Internet控制消息协议 |
IDI |
Initial Domain Identifier |
起始域标识符 |
IDU |
Interface Data Unit |
接口数据单元 |
IETF |
The Internet Engineering Task Force |
因特网工程任务组 |
IFMP |
Ipsilon Flow Management Protocol |
Iplison流管理协议 |
IKE |
Internet Key Exchange |
密钥交换 |
ILM |
Incoming Label Map |
输入标记映射 |
IMEI |
International Mobile Equipment Identity |
国际移动设备标识 |
IMS |
IP Multimedia System |
IP 多媒体域 |
IMSI/NMSI |
International Mobile Subscriber Identity/ National Mobile Station Identification |
国际/国内移动用户标识 |
IN |
Intelligent Network |
智能网 |
INAP |
Intelligent Network Application Protocol |
智能网应用协议 |
I-NNI |
Interior-Network Node Interface |
内部网络节点接口 |
ION |
Intelligence Optical Networks |
智能光网络 |
IP |
Internet Protocol |
互连网协议(国际协议) |
IPDC |
Internet Protocol Device Control |
IP设备控制协议 |
IPX/SPX |
Internetwork Packet Exchange/Sequences Packet Exchange |
Internet分组交换/顺序分组交换 |
ISC |
International Softswitch Consortium |
国际软交换协会 |
ITU-T |
ITU-T for ITU Telecommunication Standardization Sector |
国际电信联盟电信标准部 |
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L |
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L2SC |
Layer2 Switch Capable |
第二层交换接口 |
LAN |
Local Area Network |
局域网 |
LANE |
LAN Emluation |
局域网仿真 |
LAPB |
Link Access Procedure Balanced for x.25 |
平衡链路访问规程 |
LAPD |
ISDN Link Access Protocol Channel D |
D信道链路访问规程 |
LAPF |
Link Access Procedures to Frame Mode Bearer Services |
帧方式承载业务链路接入规程 |
LC-ATM |
Label Control-ATM |
标记控制ATM接口 |
LCGN |
Logical Channel Group Number |
逻辑信道组号 |
LCN |
Logical Channel Number |
逻辑信道号 |
LDP |
Label Distribution Protocol |
标记分发协议 |
LER |
Label Edge Router |
边缘交换路由器 |
LFIB |
Label Forward Information Base |
标记转发表 |
LI |
Length Indication |
长度指示 |
LLC |
Logic Link Control |
逻辑链路控制 |
LM |
Layer Management |
层管理实体 |
LMP |
Link Manage Protocol |
链路管理协议 |
LMSC |
LAN /MAN Standards Committee |
局域网/城域网标准委员会 |
LSA |
LinkState Advertisement |
链路状态通告 |
LSC |
Lambda Switch Capable |
波长交换接口 |
LSDB |
LinkState Data Base |
链路状态数据库 |
LSP |
Label Switched Path |
标记交换路径 |
LSR |
Label Switch Router |
标记交换路由器 |
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M |
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M2PA |
MTP2 Peer-to-Peer Adaptation layer |
MTP2用户对等适配层协议 |
M2UA |
MTP2 User Adaptation Layer |
MTP2用户适配层协议 |
M3UA |
MTP3 User Adaptation Layer |
MTP3用户适配层协议 |
MA |
Multiple Access |
多路访问或接入 |
MAC |
Media Access Control |
媒体访问控制 |
MAN |
Metropolitan Area Network |
城域网 |
MAU |
Multiple Access Unit |
环形局域网设备 |
MBS |
Maximum Burst Size |
最大突发长度 |
MC |
MultipointController |
多点控制器 |
MCR |
Minimum Cell Rate |
最小信元速率 |
MCU |
MultipointControl Unit |
多点控制单元 |
MD5 |
Message-Digest Algorithm version.5 |
消息摘要算法 |
ME |
Mobile Equipment |
移动式设备 |
Megaco |
Media Gateway Control protocol |
媒体网关控制协议 |
MEMS |
Micro Electro Mechanical systems |
微电子机械系统 |
MFC |
Multi Frequency Compelled Signal |
多频互控 |
MFS |
Maximum Frame Size |
最小帧长度 |
MG |
Media Gateway |
媒体网关 |
MGC |
Media Gateway Controller |
媒体网关控制器 |
MGCF |
Media Gateway Control Function |
媒体网关控制功能 |
MGCP |
Media Gateway Control Protocol |
媒体网关控制协议 |
MIB |
Management Information Base |
管理信息库 |
MIMO |
Multiple-Input Multiple-Out-put |
多输入多输出 |
MM |
Message Mode |
消息模式 |
MML |
Man-Machine Language |
人机语言 |
MONET |
Multidimensional Optical Network |
多维光网络 |
MP |
MultipointProcessor |
多点处理器 |
MP |
Management Plane |
管理平面 |
MPLS |
Multi-Protocol Label Switching |
多协议标记交换 |
MPOA |
Multiplex Protocol Over ATM |
基于ATM的多协议 |
MPλS |
Multiprotocol Label Switching |
多协议波长交换 |
MRF |
Multimedia Resources Function |
多媒体资源功能 |
MRS |
Media Resource Server |
媒体资源服务器 |
MS |
Mobile Station |
移动台 |
MSC |
Meta Signaling Cell |
元信令信元 |
MSC |
Mobile Switching Centre |
移动交换中心 |
MSDN |
Mobile Station Directory Number |
移动台目录号码 |
MSMAT |
Max burst-Size Max Assembly Time |
最大突发长度最大组装时间 |
MSRN |
Mobile Station Roaming Number |
移动台漫游号码 |
MTBF |
Mean Time Between Failure |
平均故障间隔时间 |
MTU |
Maximum Transmission Unit |
最大传输单元 |
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N |
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NACK |
Negative Acknowledge |
“不证实”信息 |
NE |
Network Element |
传送网网元 |
NetBEUI |
NetBIOS Extended User Interface |
NetBIOS用户扩展接口 |
NetBIOS |
Network Basic Input/Output System |
网络基本输入输出系统 |
NGN |
Nest Generation Network |
下一代网络 |
NHLFE |
Next Hop Label Forwarding Entry |
下一跳标记转发入口 |
NHRP |
Next Hop Resolution Protocol |
下一跳解析协议 |
N-ISDN |
Narrowband-Integrated Services Digital Network |
窄带综合业务数字网 |
NMC |
NetworkManagementCenter |
网络管理中心 |
NNI |
Network Node Interface |
网络节点接口 |
NSAP |
Network Service Access Point |
网络服务访问点 |
NSI |
Network Signaling Interface |
网络信令接口 |
NUI |
Network User Identity |
网络用户标志 |
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O |
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OAM |
Operation And Maintenance |
操作维护信元 |
OBS |
Optical Burst Switching |
光突发交换 |
OC |
Oriented Connection |
面向连接方式 |
OCS |
Optical Circuit Switching |
光电路交换 |
OMPLS |
Optical Multi Protocol Label Switching |
光标记分组交换 |
OPS |
Optical Packet Switching |
光分组交换 |
OS |
Optical Switching |
光交换 |
OSI/RM |
Open System Interconnect/ Reference Model |
开放系统互连参考模型 |
OSPF |
Open Shortest Path First |
开放最短路径优先 |
OTN |
Optical Transport Network |
光传输网络 |
OVPN |
Optical Virtual Private Network |
光虚拟专用网 |
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P |
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PABX |
Private Automatic Branch Exchange |
专用用户交换机 |
PAD |
Packet Assembler/Disassembler |
分组装拆设备 |
PC |
Permanent Connection |
硬永久性连接 |
PCH |
Paging Channel |
寻呼信道 |
PCM |
Pulse Code Modulation |
脉码调制 |
PCR |
Peak Cell Rate |
峰值信元速率 |
PDU |
Protocol Data Unit |
协议数据单元 |
PE |
Provider Edge |
服务提供商边缘设备 |
PHP |
Penultimate Hop Popping |
倒数第二跳弹出 |
PHS |
Personal Handyphone System |
小灵通 |
PINT |
PSTN/Internet Interworking |
语音和数据相结合的业务 |
PLL |
Phase Lock Loop |
锁相环 |
PLMN |
PublicLandMobile Network |
公用陆地移动通信网 |
PM |
Physical Media dependent |
物理媒体相关子层 |
PRM |
Protocol Reference Model |
协议参考模型 |
PS |
Packet Switching |
分组交换 |
PSC |
Packet Switch Capable |
分组交换接口 |
PSTN |
Public Switched Telephone Network |
公共交换电话网络 |
PSTN |
Public Switching Telephone Network |
公用电话交换网 |
PSTN/ISDN |
Public Switched Telephone Network/Integrated Service Digital Network |
公共交换电话网络/综合业务数字网 |
PT/NPT |
Packet Terminal/Not Packet Terminal |
分组终端/非分组终端 |
PTI |
Packet Type Identifier |
分组类型标识符 |
PVC |
Permanent Virtual Circuit |
永久虚电路 |
PVC |
Permanent Virtual Connection |
永久虚连接 |
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Q |
|
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QoS |
Quality of Service |
服务质量 |
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R |
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RACH |
Random Access Channel |
随机接入信道 |
RADIUS |
Remote Authentication Dial In User Service |
远程认证拨号用户服务协议 |
RAS |
Registration Admission and Status |
接纳和状态协议 |
RCU |
Remote Centralization Unit |
远程集中器 |
RD |
Routing Domain |
路由选择域 |
RD |
Route Distinguisher |
路由区分标识符 |
RFC |
请求注解 |
|
RFD |
Reserve-a-Fixed-Duration |
预留固定周期 |
RIP |
Routing Information Protocol |
路由选择信息协议 |
RIP |
Real Time Transport Protocol |
实时传输协议 |
RM |
Resource Management Cell |
资源管理信元 |
RNC |
Radio Network Controller |
无线网络控制器 |
R-SGW |
Roaming Signaling Gateway |
漫游信令网关 |
RSM |
Remote Switching Module |
远端交换模块 |
RSU |
Remote Subscriber Unit |
远端用户单元 |
RSVP-TE |
Resource ReSerVation Protocol-Traffic Engineering |
扩展的资源预留协议 |
RT |
Route Target |
路由目标 |
RTCP |
Realtime Transport Control Protocol |
实时传输控制协议 |
RTP |
Real Time Transport Control Protocol |
实时传输协议 |
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S |
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SABM |
Set Asynchronous Balanced Mode |
异步平衡模式 |
SACCH |
Slow Associated Control Channel |
慢速随路控制信道 |
SAR |
Segmentation And Reassembly |
分段和重装子层 |
SBR |
Statistical Bit Rate |
可变比特率（ITU-T 的称谓） |
SC |
Sequence Counter |
序列计数 |
SC |
Switched Connection |
交换连接 |
SCCP |
Signaling Connection Control Part |
信令连接控制部分 |
SCF |
Service Control Function |
业务控制功能 |
SCH |
Synchronization Channel |
同步信道 |
SCP |
Service Control Point |
业务控制点 |
SCR |
Sustainable Cell Rate |
可维持信元速率 |
SCTP |
Stream Control Transmission Protocol |
流控制传输协议 |
SDCCH |
Stand-alone Dedicated Control Channel |
独立专用控制信道 |
SDL |
Specification and Description Language |
规范说明语言 |
SDL/GR |
SDL/Graphic Representation |
SDL/图形表示 |
SDL/PR |
SDL/Textual Phrase Representation |
SDL/文字描述 |
SDP |
Session Description Protocol |
会话描述协议 |
SDT |
Structure Data Transfer |
结构化数据传输 |
SDU |
Server Data Unit |
服务数据单元 |
SG |
Signaling Gateway |
信令网关 |
SGCP |
Simple Gateway Control Protocol |
简单网关控制协议 |
SGSN |
Serving GPRS Support Node |
GPRS服务支持节点 |
SGW |
Signaling Gateway |
信令网关 |
SIGTRAN |
Signaling Transport |
信令传输协议 |
SIM |
Subscriber Identity Module |
用户识别模块 |
SIP |
Session Initiation Protocol |
会话初始协议 |
SIP-T |
Session Initiation Protocol for Telephones |
电话会话初始协议 |
SIP-I |
SIP with Encapsulated ISUP |
ISUP 封装会话初始协议 |
SLP |
Submitted Loss Priority |
提交的丢弃优先级 |
SM |
Speech Memory |
语音存储器 |
SM |
Streaming Mode |
流模式 |
SMDS |
Switched Multi-megabit Data Service |
可交换的多兆比特数据业务 |
SMI |
Structure of Management Information |
管理信息结构 |
SMP |
Service Manage Point |
业务管理点 |
SMTP |
Simple Mail Transfer Protocol |
简单邮件传输协议 |
SN |
Sequence Number |
序号字段 |
SNMP |
Simple Network Management Protocol |
简单网络管理协议 |
SNP |
Sequence Number Protection |
序号保护字段 |
SP |
Structure Pointer |
结构指针 |
SPC |
Stored Program Control |
存储程序控制 |
SPC |
Soft Permanent Connection |
软永久性连 |
SRTS |
Synchronous Residual Time Stamp |
同步剩余时间标签 |
SS |
Soft Switch |
软交换机 |
SSADT |
Service Specific Assure Data Transfer |
业务特定确保数据传输子层 |
SSCF |
Service Specific Coordination Function |
业务特定协调功能 |
SSCOP |
Service Specific Connection Oriented Protocol |
业务特定面向连接协议 |
SSCS |
Service Specific Convergence Sublayer |
业务特定会聚子层 |
SSS |
Synchronized Sample Scrambling |
自同步扰码 |
SSSAR |
Service Specific Segmentation And Reassembly |
业务特定拆装子层 |
SSTED |
Service Specific Transfer Error Detection |
业务特定传输差错检测子层 |
STDM |
Statistic Time Division Multiplexing |
统计时分复用 |
STM |
Synchronous Time-division Multiplexing |
同步时分复用 |
SUA |
SCCP User Adaptation |
SCCP用户适配层协议 |
SVC |
Switched Virtual Connection |
交换虚连接 |
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T |
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TC |
Traffic Control |
流量控制 |
TC |
Transmission Convergence |
传输汇聚子层 |
TCAP |
Transaction Capability Application Part |
事务处理能力应用部分 |
TCH |
Traffic Channel |
业务信道 |
TCP/IP |
Transmission Control Protocol/Internet Protocol |
传输控制协议/Internet控制 |
TDD |
Time Division Double |
时间压缩复用法 |
TDM |
Time Division Multiplex |
时分复用 |
TDMC |
Time Division Multiplexing Capable |
时隙交换接口 |
TG |
Trunk Gateway |
中继网关 |
TLV |
Type-Length-Value |
类型-长度-值 |
TMSI |
Temporary Mobile Subscriber Identity |
临时移动用户标识 |
ToS |
Type of Service |
服务类型 |
TP |
Transport Plane |
传送平面 |
T-SGW |
Transport Signaling Gateway |
传输信令网关 |
TTL |
Time to Live |
存活时间域 |
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U |
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UA |
Unnumbered Acknowledgement |
无编号确认 |
UA |
User Agent |
用户代理 |
UAC |
User Agent Client |
用户代理客户机 |
UAS |
User Agent Server |
用户代理服务器 |
UBR |
Unspecified Bit Rate |
未指定比特率 |
UC |
Unassigned Cell |
未指定信元 |
UDP |
User Datagram Protocol |
用户数据报协议 |
UE |
User Equipment |
用户设备 |
UIM |
User Identity Module |
身份识别模块 |
UMTS |
Universal Mobile Telecommunications System |
通用移动通信系统 |
UNI |
User Network Interface |
用户与网间接口 |
UPT |
Universal Personal Telecommunication |
通用个人通信业务 |
URI |
Uniform Resource Identifier |
通用资源标识 |
USIM |
UMTS Subscriber Module |
UMTS用户模块 |
UTRAN |
Universal Terrestrial Radio Access Network |
陆地无线接入网 |
UUI |
User-to-User Indication |
用户间指示 |
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V |
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VBR |
Variable Bit Rate |
可变比特率（ATM论坛的称谓） |
VC |
Virtual Circuit |
虚电路 |
VCI |
Virtual Channel Identifier |
虚通路(信道)标识符 |
VLAN |
Virtual LAN |
虚拟局域网 |
VLR |
Visitor Location Register |
访问位置寄存器 |
VLSM |
Variable Length Subnet Mask |
可变长度子网掩码 |
VOIP |
Voice over Internet Protocol |
基于IP的话音 |
VPI |
Virtual Path Identifier |
虚通道标识符 |
VPN |
Virtual Private Network |
虚拟专用网 |
VRF |
VPN Routing & Forwarding |
VPN路由转发表 |
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W |
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WAG |
Wireless Access Gateway |
无线接入网关 |
WAN |
Wide Area Network |
广域网 |
WDM |
Wavelength Division Multiplexing |
多信道的波分复用 |
WG |
Wireless Gateway |
无线网关 |
WLAN |
Wireless LAN |
无线局域网 |
WLC |
Wired Logic Control |
布线逻辑控制 |