| A:Actuator 执行器A:Amplifier 放大器A:Attendance员工考勤A:Attenuation衰减AA:Antenna amplifier 开线放大器AA:Architectural Acoustics建筑声学AC:Analogue Controller 模拟控制器ACD:Automatic Call Distribution 自动自动分配ACS:Access Control System进出控制系统AD:Addressable Detector地址探测器ADM:Add/Drop Multiplexer分插复用器ADPCM:Adaptive Differential ulse Code Modulation 调制自适应差异脉冲编码AF:Acoustic Feedback 声反馈AFR:Amplitude /Frequency Response 幅频响应AGC:Automati Gain Control自动增益控制AHU:Air Handling Unit 空气处理机组A-I:Auto-iris自动光圈AIS:Alarm Indication Signal 警告指示信号AITS:Acknowledged Information Transfer Service确认操作ALC:Automati Level Control 自动平衡控制ALS:Alarm Seconds 告警秒ALU:Analogue Lines Unit 模拟用户线单元AM:Administration Module管理模块AN:Access Network 接入网ANSI:American National Standards Institute美国国家标准学会APS:Automatic Protection Switching 自动保护倒换ASC:Automati Slope Control 自动斜率控制ATH:Analogue Trunk Unit 模拟中继单元ATM：Asynchrous Transfer Mode 异步传输模式AU- PPJE:AU Pointer Positive Justification 调整管理单位正指针AU:Administration Unit 管理单元AU-AIS:Administrative Unit Alarm Indication SignalAU警告指示信号 AUG:Administration Unit Group 管理单元组AU-LOP:Loss of Administrative Unit Pointer AU指针丢失AU-NPJE:AU Pointer Negative Justification管理单位负指针调整AUP:Administration Unit Pointer管理单位指针 AVCD:Auchio &Video Control Device 视频控制装置AWG:American Wire Gauge美国电缆规格 |
| BA:Bridge Amplifier桥接放大器 BAC:Building Automation & Control net建筑自动化和控制网络BAM:Background Administration Module后管理模块BBER:Background Block Error Ratio背景块误码比BCC:B-channel Connect ControlB通路连接控制BD:Building Distributor BEF:Buiding Entrance Facilities 建筑入口设施BFOC:Bayonet Fibre Optic Connector大口光纤连接器BGN:Background Noise背景噪声BGS: Background Sound 背景音响BIP-N:Bit Interleaved Parity N code 比特间插奇偶校验NB-ISDN:Brand band ISDN 宽带综合业务数字网B-ISDN:Broad band -Integrated Services Digital Network 宽带综合业务数字网BMC:Burst Mode Controller 突发模式控制器BMS:Building Management System 智能建筑管理系统BRI:Basic Rate ISDN 综合业务数字网基本率BS:Base Station基站BSC:Base Station Controller基站控制器BUL：Back up lighting备用照明 |
| C/S: Client/Server客户机/服务器 T C:Combines 混合器C:Container 容器CA:Call Accounting电话自动计费系统CATV:Cable Television 有线电视CC:Call Control 呼叫控制CC:Coax cable 同轴电缆CCD:Charge coupled devices 电荷耦合器件CCF:Cluster Contril Function 簇控制功能CD:Campus Distributor 建筑群配线架CD:Combination detector 感温、感烟复合探测器CDCA:Continuous Dynamic Channel Assign 连续动态信道分配CDDI:Copper Distributed Data 合同缆分布式数据接口CDES:Carbon dioxide extinguisbing system 二氧化碳系统CDMA:Code Division Multiplex Access 码分多址CF:Core Function 核心功能CFM:Compounded Frequency Modulation 压扩调频繁CIS:Call Information System 呼叫信息系统CISPR:Internation Special Conmittee On Radio Interference 国际无线电干扰委员会CLNP:Connectionless Network Protocol 网络层协议无连接模式CLP:Cell Loss Priority信元失去优先权 CM:Communication Module 通信模块CM:Configuration Management 配置管理CM:Cross-connect Matrix矩阵的交叉连接CMI:Coded Mark Inversion传号反转码 CMISE:Common Management Information Service公共管理信息协议服务单位CPE:Convergence protocol entity 会议协议实体CR/E:card reader /Encoder (Ticket reader )卡读写器/编码器CRC:Cyclic Redundancy Check 循环冗佘校验CRT:Cathode Ray Tabe 显示器、监视器、阴极射线管CS: Convergence service 会聚服务CS:Cableron Spectrum 旧纳档块化技术CS:Ceiling Screen 挡烟垂壁CS:Convergence Sublayer合聚子层CSC:Combined Speaker Cabinet 组合音响CSCW:Computer suppored collaborative work 计算机支持的协同工作CSES:Continuius Severely Errored Second 连续严重误码秒CSF:Cell Site Function 单基站功能控制CTB:Composite Triple Beat 复合三价差拍CTD：Cable Thermal Detector 缆式线型感温探测器CTNR:carrier to noise ratio 载波比CW:Control Word 控制字 |
| D:Directional 指向性 D:Distortion 失真度D:Distributive 分布式DA:Distribution Amplifier 分配的大器DBA:Database Administrator数据库管理者DBCSN:Database Control System Nucleus数据库控制系统核心 DBOS:Database Organizing System 数据库组织系统DBSS:Database Security System 数据库安全系统DC:Door Contacts大门传感器DCC:Digital Communication Channel数字通信通路 DCN:Data Communication Network 数据通信网DCP-I:Distributed Control Panel -Intelligent智能型分散控制器DCS:Distributed Control System集散型控制系统DDN:Digital Data Network 数字数据网DDS:Direct Dignital Controller直接数字控制器DDW:Data Describing Word 数据描述字DECT:Digital Enhanced Cordless Telecommunication增强数字无绳通讯DFB:Distributed Feedback 分布反馈DID:Direct Inward Dialing 直接中继方式，呼入直拨到分机用户DLC:Data Link Control Layer 数据链路层DLI:DECT Line Interface DODI:Direct Outward Dialing One 一次拨号音DPH:DECT Phone DRC:Directional Response Cahracteristics 指向性响应DS:Direct Sound 直正声DSP:Digital signal Processing 数字信号处理DSS：Deiision Support System 决策支持系统DTMF:Dual Tone Multi-Frequency 双音多频DTS:Dual -Technology Sensor 双鉴传感器DWDM:Dense Wave-length Division Multiplexing 密集波分复用DXC:Digital Cross-Connect 数字交叉连接 |
| E:Emergency lighting照明设备 E:Equalizer 均衡器E:Expander 扩展器EA-DFB:Electricity Absorb-Distributed Feedback 电吸收分布反馈ECC:Embedded Control Channel 嵌入或控制通道EDFA:Erbium-Doped Fiber Amplifier掺饵光纤放大器EDI:Electronic Data Interexchange 电子数据交换EIC:Electrical Impedance Characteristics 电阻抗特性EMC：Electro Magnetic Compatibiloty 电磁兼容性EMI:Electro Magnetic Interference 电磁干扰EMS:Electromagnetic Sensitibility 电磁敏感性EN:Equivalent Noise 等效噪声EP:Emergency Power 应急电源ES:Emergency Sooket 应急插座ES:Evacuation Sigvial疏散照明 ESA:Error SecondA 误码秒类型ＡESB:ErrorSecondB 误码秒类型ＢESD:Electrostatic Discharge静电放电ESR:Errored Second Ratio 误码秒比率ETDM:Electrical Time Division Multiplexing电时分复用ETSI:European Telecommunication Standards Institute欧洲电信标准协会 F:Filter 滤波器 FAB:Fire Alarm Bell 火警警铃FACU:Fire Alarm Contrlol Unit 火灾自动报警控制装置FC:Failure Count 失效次数FC:Frequency Converter 频率变换器FCC:Fire Alarm System 火灾报警系统FCS:Field Control System 现场总线FCU：Favn Coil Unit风机盘管FD:Fire Door 防火门FD:Flame Detector 火焰探测器FD:Floor DistributorFD:Frequency Dirsder 分频器FDD:Frequency Division Dual 频分 双工FDDI：Fiberdistributed Data Interface光纤缆分布式数据接口。FDDIF:Fiber Distributed Data Inferface光缆分布数据接口 FDMA:Frequency Division Multiple Access频分多址FE:Fire Extirguisher 消防电梯FEBE:Far End Block Error远端块误码FEXT:Far End Crosstalk 远端串扰FFES:Foam Fire Extionuishing System泡沫灭火系统 FH:Fire hydrant 消火栓FI:Fee Indicator 费用显示器FL:Focal Length 焦距FL:Fuzzy Logic 模糊逻辑FM:Faiilt Management失效管理FPA:Fire Public Address 火灾事故广播FPD:Fire Public Derice 消防设施FR:Frequency Response 频响FRD:Fire Resis tamt Damper 防火阀FRS:fire resistant shutter 防火卷帘FSK:Frequency Shift Keying移频键控 FSU:Fixed Subscriber Unit单用户固定台FTHD:Fixed temperatute Heat Detector 定温控测器FTP:Foil Tnisted Pair金属箔双绞电缆FTTB:Fiber To The Building 光纤到大楼FTTC:Fiber To The Curb光纤到路边FTTH:Fiber To The Home 光纤到家庭FW:fire Wall 防火墙FWHM:Full Width Half Maximum 脉冲的半高宽度 |
| PACR：Attonuation to Crosstalk Ratio 衰减与串扰比 GAP:Gaussian (filtered)Frequency Shift Keying 高斯滤波频移键控 GBS:Glass Break Sensors 玻璃破碎传感器 GC:Generic Cabling 综合布线GIB:Generic Information Block 通用信息模块GNE:Gateway Network Element网关GSM:Global System for Mobile communications全球移动通信系统H:Hybrid 混合式 HCBS:High C Bus Servers Unit 高速C总线服务单元HCS:Higher order Connection Supervision高阶连接监视HD：Heat Detecter 感温探测器HDB3:High Density Bipolar of order 3code 高密度双极性码HDLC:High Data Link Control 高级数据链路控制HDLC:High Digital Link Control 高级数据链路控制HDSL:High-bit -rate Digital Subscriber Link 高比特数字用户链路HDTV:High Definition Television 高清淅度电视HEC:Header Ervor Control:信头差错控制域HEMS:High -level Entity Management system高级实体管理系统 HFC:Hybrid fiber coax 光纤-同轴电缆混合系统HGRP:Home Optical Network 华为公司专用协议HIFI:High Fidelity 高保真度HIPPI:High Performance Parrallel Interface高性能并行接口HMP:Host monitoring protocol 宿主机监视协议HOA:High Order Assembler高阶组装器HOAPID:High Order Path Access Point Identifier高阶通道接入不敷出点标识符HOI:High Order Interface高阶接口HONET:Home Optical Network 华为综合业务接入网商标HO-TCM:High Order Tandem Connection Monitor高阶通道串联连接监控HOVC:High Order Virtual Container 虚容器HPA:High order path Adaptation高阶适配HPC:High order path Connection高阶通道连接HPOM:High -order Path Overhead Monitor高阶通道开销监视器HPP:High -order path Protection高阶通道保护HP-RDI:Higher order path -Remote Defect Indication高阶通道接收缺陷指示HP-REI:Higher order Path-Remote ErrorIndication高阶通道远端错误指示HPT:High order path Termination高阶通道终端HRDS:Hypothetical Reference Digital Section假设参考数字段HSUT:High -order path Supervision Unequipped Termination高阶通道监控未装装载终HVAC:Heating Ventilation Air Conditioning暖通空调 HWS:Hot Water Supply热水供应系统 |
| I:Interference 串扰 IA:Intruder Alarm防盗报警ICMP:Internet Control Message Protocol控制信息协议IDC:Insucation Displacement Connection绝缘层信移连接件IDS:Industrial Distribution System 工业布线系统IFC:Intelligent Fire Controller 照明智能控制器ILD:Inject Light Diode 注入式激光二极管IM:Impedance Matching 阻抗匹配IMA:Interactive Multimedia Association交互式多媒体协议IM-DM:Intensity Modulation-Direction Modulation直接强度调制IN:Information Network 信息网IO：Information Outlet信息插座IOS:Intelligent Out Station 智能外围站IPEI:International Portable国际移动设备标识号IPTU:Indoor Pan &Tilt Unit 室内水平俯仰云台IPUI:International Portable User Identity国际移动用户标识号ISD:Ionization Smoke Detector 离子感烟探测器IT:Information Technology 信息技术ITU:International Telecommunications Union 国际电信联盟ITU-T:原名CCITT，是国际电信联盟的一个委员会ITV:Interactive Tevevision 交互式电视JIT-Discussion conference system 即席发言系统L:Lens摄像机镜头 LAN:Local Area Network 局域网LAPB：Link Access Procedure-Balanced 链路接入规程----平衡LAPD:Link Access Procedure D-channel D信道链路访问协议LCD:Liquid Crystal Display 液晶显示屏LCL:Longituchinal Conrorsion Loss纵模变换损耗LCN:Local Communication Network 本地通信网LCS:Lower order Connection Supervision低阶连接监视LD:Laser Diode激发二极管LE:Local Exchange本地交换网LED:Light Emittirng Diode发光二极管LIU：Lightguide Interconnection Unit光纤互连装置LLC:Logic Link Control Layer逻辑链路控制层 LLME:Low Layer Management Entity低层管理实体LM:Lerel Modulation电平调节LNA:Low Noise Amplifier低噪音放大器LOF:Loss Of Frame 帧丢失LOI:Low Order Interface低阶接口LOP:Loss Of Pointer 指针丢失LOS:Loss Of Signal 信号丢失LO-TCM:Low Order Tandem Connection Monitor低阶通道串联连接监视器LOVC:Low Order Virtual Container 低阶虚容器LPA:Lower order qath Adaptation低阶通道适配LPC:Lower order Path Connection低阶通道连接LPOM:Low-order Path Overhead Monitor低阶通道开销监视器LPP:Low-order Path Protection 低阶通道保护LPT:Lower order Path Termination低阶通道终端LSBCM:Laser Base Current Monitor激光器偏流监视LSUT:Low -order path Supervision Unequipped 低阶通道监控未装载终端LTC:Londline Trunk Coutroller有线线路分配器 LU:Line Unit 线路单元 |
| MAC:Medium Access Control Layer 介质访问控制层 MBMC:Multiple Burst Mode Controller 多突发模式控制器MCF:Message Communication Function消息通信功能MD:Mediation Device中介设备MFPB:Multi-Frequency Press Button多频按键MIB:Management Information Base 管理信息库MIC：Mediu Interface Connector 介质接口连接器MIO:Multiuser Information Outlet 多用户信息插座MLM：Multi-Longitudinal Mode 多纵模MM:Mobile Management 移动管理MMDS:Maltichanned Microware Distribution System多路微波分配系统 MMO:Multionedia Outlet 多媒体插座MN-NES:MN-Network Element System 网元管理系统MN-RMS:MN-Region Management System 网络管理系统MO:Managed Object 管理目标MSA:Multiplex Section Adaptation复用段适配MS-AIS:Mutiplex Section-Alarm Indication Signal 复用段告警指示信号MSOH:Multiplex Section Overhead 复用段开销MSP:Multiplex Section Protection复用段保护MS-RDI:Multiplex Section-Remote Defect Indication复用段远端缺陷指示MST:Multiplex Section Termination复用段终端MSU:Multi-Subscriber Unit 多用户单元MTIE:Maximum Time Interval Error最大时间间隔误差MUX:Multiplexer 灵活复接器NDF:New DataFlag 新数据标识NDFA:Niobium-Doped Fiber Amplifier 掺铌光纤放大器NE:Network Element 网元NEXT：Near End Crosstalk 近端串扰NMS:Network Management System网络管理系统 NNE:Non-SDH Network Element 非SDH网元NNI:Network Node Interface网络节点接口NPI:Null Pointer Indication无效指针指示NWK:Network Layer 网络层 NZ-DSF:Non Zero-Dispersion Shift Fiber 非零散位移光纤 |
| OAM&P:Operation Administration, Maintenance and Provisioning运行、管理、维护和预置OAM:Operation, Administration and Maintenance操作、管理和维护OBFD：Optical Beam Flame Detector 线型光速火焰探测器OC-N:Optical carrier level-N光载波级NOCR:Optical Character Recogmition光学字符识别 OEIC:Optoelectronic Integrated Circuit光电集成电路 OFA:Optical Fiber Amplifier 光纤放大器OHP:Overhead Processing开销处理 OLT:Optical Line Terminal光纤线路终端ON:Orerall Noise 总噪声ONU:Optical Network Unit 光纤网络单元OOF:Out Of Frame 帧失步OOP:Object Oriental Programming面向对象程序设计OS:Operating System 操作系统OSC:Oscillator 振荡器OSI:Open Systems Interconnection开放系统互连OTDK：Optical Time Doman Reflectometer 光时域反射线OTDM:Optical Time Division Multiplexing 光时分复用PA:Power Amphfier 功率放大器 PA:Power Amplifier 功率放大器PABX:Private Auntomatic Branch Exchange 程控数字自动交换机Paging :无线呼叫系统PAL:Pinhole Alc Lons 针孔型自动亮度控制镜头PARK:Portable Access Rights Key 移动用户接入权限识别码PAS:Public Address System 公共广播音响系统PBX:Private Brancn exchange 程控用户交换机PC:Pan unit&control 云台及云台控制器PC:Proximinty Card 接近卡PCM:Pulse Code Modulation 脉冲编码调制PCS:Personal Communication Service个人通讯服务PDFA:Praseodymium-Doped Fiber Amplifier 掺镨光纤放大器PDH:Plesiochronous digital Hierarchy 准同步数字系列PDN:Public data network 公用数据网PDS:Premises Distribution Systemn建筑物结构化综合布线系统 PF:Pressurization Fan 加压风机PG:Pressure Gradient 压差式PID:Passire Infrared Detector 被动式红外传感器PJE:Pointer Justification Event 指针调整事件PLC:Programmerable Logic Controller 可编程控制器PM:Power Matching 功率匹配PMS:Prooerty Management system 资源管理系统PO:Pressure Operated 压强式POH:Path Overhead 通道开销PPI:PDH Physical InterfacePDH物理接口Preamplification :前置放大PRI:Primany Rate Interface 基群速率接口PRM:Patter Recogniton Method模式识别法PSC:Protection Switching Count 保护倒换计数PSD:Photoelectric Smoke Detector 光电感烟探测器PSD:Protection Switching Duration保护倒换持续时间PSK:Phase Shift Keying 移相键控PSNT：Ponver Sum Next 综合近端串扰PSPDN:Packet switched Public Data Network 公众分组交换网PSTN:Public Switch Telephone Network 公用交换电话网 PU:Pick Up 拾音器PVC:Polyvingl chloride 聚氯乙烯PVCS:Public video conferring system 公用型会议电视系统PWS:Power system 电源系统 |
| ITU-T:International Telecommunication Union-Telecommunication Sector国际电信联盟-电信标准部 R:Receiver 终端解码器 R:Reverberator 混响器RC:Radio Communication移动通信RC:Room's Coefficient 房间系数RCU:Remote Control Units 终端控制器RDI:Remote Defect Indication 远端失效指示REG:Regenerator 再生器Resolution:清晰度RF:Radio Frequency 射频RHE:Romote Head End 远地前端RMC:Repeater Management Controller天线信道控制器 RMS:Root Mean Square 均方根值RMU:Redundancy Memory Unit 冗佘存贮器RORTD:Rate Of Rise Thermal Detector 差温探测器RR:Reverberation Radius 混响半径RS:Reflected sound 反射场RSOH:Regenerator Section Ouerhead 再生段开销RSSI:Radio Signal Strength Indicator RST:Regenerator Section Termination 再生段终端RSU:Remote Subscriber Unit 远端用户单元RT:Real Time 实时RT:Reverberation Time 混响时间RWS:Remote Workstation 远端工作站S:Sprinkler 分配器 S:Stereo 双声道S:Strike 电子门锁SAA:Sound Absorption Ability 吸声能力SAR:Segmetation and reassembly sublayer 拆装子层SATV:Sate Llite 卫星电视SBS:Synchronous Backbone System 同步信息骨干系统SBSMN:SBS SBS Management Network 系列传输设备网管系统 SC:Smart Card 智能卡SC:Subscriber Connector (Optial Fiber Connector)用户连接器（光纤连接器）SC:Supervisong Center 中央站监控中心管理中心SCADA:监控和数据采集软件SCB:System Control Board 系统控制板SCC:System Control&Communication系统通信控制SC-D:Saplex sc commector 双ISC连接器SCD:Sound Console Desk 调度台SCPC:Single Chnanel Per Carrier 卫星回程线路SCS:Stractured Cabling System 结构化布线系统SD:Signal Degraded 信号劣化SD:Smoke damper 排烟阀SD:Smoke Detector 感烟探测器SD:System Distortion 系统失真SDCA:Synchronization DCA同步数据通讯适配器SDMA:Spaee Division Multiplex Access容分 SDXC:Synchronous Digital Cross Connect 同少数字交叉连接SE:Sound Energy 声能SEC:SDH Equipment Clock SDH 设备时钟SED:Sound Energy Density 声能密度SEEF:Smoke Extractor Exhaust Fan 排烟风机SEMF:Synchronous Equipment Management Function同步设备管理功能SES:Severely Errored Second 严重误码秒SESR:Severely Errlred Second Ratio严重误码秒比率 SETPI:Synchronous Equipment Timing Physical Interface同步设备定时物理接口SETS:Synchronous Equipment Timing Source同步设备定时源 SF:Spur Feeder 分支线SF:Subscribers Feeder 用户线SFN:Sound Field Nonunifornity 声场不均匀度SFP:Sound Field Processor 声场处进器SI:Sound Installation 音响设备SI:Sound Insulation隔音SICS:Simultaneous Interpretation Conference system同声传译系统 SIPP:Service Interface and protocol processing unit业务接口和协议处理单元SLC:Sate llite Commumication 卫星通信SLI:Synchronous Line Optical Interface同步线路光口板SLIC:Subscriber Line Interface Controller用户线接口控制器SLM:Signal Label Mismatch 信号标记失配SM:Synchronous Multiplexer同步复用器SMF:System management function系统管理功能SMS:SDH Management Sub -Network SDH管理子网SNA:System Network Architecture 系统网络建筑SNI:Service Node Interface业务节点接口SNK:Sighal To Noise Ratio 信噪比SOA:Semiconductor Optical Amplifier半导体光放大器 SOH:Section Overhead 段开销SONET:Synchronous Optical Network同步光网络 SPF:Service Port Function业务口功能SPI:SDH Physical InterfaceSDH物理接口SPL:Sound Pressure Level 声压级SRL:Stractural Return Loss 结构器波损耗SS:Shock sensors 震动传感器SS:Sound Source 音源SS:Sprinkler System 自动喷水灭火系统SSB:Single Side Band 单边带调制SSM:Synchronous Status Message 同步状态信息SSU:Scan and Signal Unit 扫描及信号单元ST:Straight Tip 直通式光纤连接器ST:Subscribers Tap 用户分支器STB:Set -Top -Box 机项盒STC:Short -Term Card 计时票STE:Signaling Transfer Equipment 信令转换设备STG:Synchronous Timing Generator同步定时发生器STI:Surface fransfer Inpedane 表面传输阻扰STI:Surface Tranfer Inpedance 表面传输阻抗STM-N:Synchronous Transport Module level-N同步传送模块等级NSU:Subscriber Unit用户单元SV:Smoke Vent 排烟器SVCS:Sound Veinforcement System扩声系统 |
| T:Teletext 可视图文 T:Terminal 终端机TA:Trunk Amplifier 干线放大器TC:Telecommunication Closet 通信插座TC:Transient Characteristic瞬间特性TCI:Trunk cabling interface 星形连接 TCP/P:Transmission Control Protocol Inter-network Protocol传输控制协议/网间协议TCS:Tele Communication System 通信系统TCS:Telecommunication System 通讯系统TD:Ticket Dispemser 发卡机TDD:Time Division Dual 时分双工TDEV:Time Deviation时间偏差TDM:Time Division Multiplexing时分复用TDMA:Time Division Multiple Address时分 多址TDS:Time division switching 时分交换结构TELEX:用户电报电传TEP:时间/事件软件TF:Transfer Function传送功能TFCC:Transmission frequenay Characteristic传输频率特性 TGNP:The Greatest Noise Power 最大噪声功率TIM:Trace Identifier Mismatch追踪识别符失配TM:Termination Multiplexer 终端复用器TMN:Telecommunication Management Network 电信管理网TMN:Telecommunication Management Network电信管理网 TNL:Total Noise Level 总噪声级TO:Telecommunications Outlet通信插座TP：Tunst Pair 对绞线TR:Token Ring 令牌网TSI:Timeslot Interxhange时隙交换TSU:Time Switching Unit 时隙交换单元TTF:Transport Terminal function 传送终端功能TTS:Tri Technology Sensor三鉴传感器 TU:Tributary Unit 支路单元TUG:Tributary Unit Group 支路单元组TU-LOM:TU-Loss Of Multi-frame 支路单元复帧丢失TUP:Tributary Unit Pointer 支路单元指针TUPP:Tributary Unit Payload Process支路净荷处理UAT:Ultra Aperture Terminal 超小口径卫星地面接收站UL：Underwriters Laboratory 担保实验室 UM:Unidirectional Microphines 单指向性传声器 VA:Vacant auditoria 空场VCI:Virtual chammel identifier 虚信道标识VCS:vIdeo conferphone system 会议电视系统VI:Video interphone 可视对讲门铃Video switchers 图象切换控制器Videotext :可视图文VOD:Video on demand 视频点播VSAT:Very Small Aperture Terminal 甚小口径天线地球站 |