DECT:Digital Enhanced Cordless Telecommunication增強(qiáng)數(shù)字無(wú)繩通訊
DFB:Distributed Feedback 分布反饋
DID:Direct Inward Dialing 直接中繼方式，呼入直撥到分機(jī)用戶(hù)
DLC:Data Link Control Layer 數(shù)據(jù)鏈路層
DLI:DECT Line Interface
DODI:Direct Outward Dialing One 一次撥號(hào)音
DPH:DECT Phone
DRC:Directional Response Cahracteristics 指向性響應(yīng)
DS:Direct Sound 直正聲
DSP:Digital signal Processing 數(shù)字信號(hào)處理
DSS：Deiision Support System 決策支持系統(tǒng)
DTMF:Dual Tone Multi-Frequency 雙音多頻
DTS:Dual -Technology Sensor 雙鑒傳感器
DWDM:Dense Wave-length Division Multiplexing 密集波分復(fù)用
DXC:Digital Cross-Connect 數(shù)字交叉連接
E:Emergency lighting照明設(shè)備
E:Equalizer 均衡器
E:Expander 擴(kuò)展器
EA-DFB:Electricity Absorb-Distributed Feedback 電吸收分布反饋
ECC:Embedded Control Channel 嵌入或控制通道
EDFA:Erbium-Doped Fiber Amplifier摻餌光纖放大器
EDI:Electronic Data Interexchange 電子數(shù)據(jù)交換
EIC:Electrical Impedance Characteristics 電阻抗特性
EMC：Electro Magnetic Compatibiloty 電磁兼容性
EMI:Electro Magnetic Interference 電磁干擾
EMS:Electromagnetic Sensitibility 電磁敏感性
EN:Equivalent Noise 等效噪聲
EP:Emergency Power 應(yīng)急電源
ES:Emergency Sooket 應(yīng)急插座
ES:Evacuation Sigvial疏散照明
ESA:Error SecondA 誤碼秒類(lèi)型Ａ
ESB:ErrorSecondB 誤碼秒類(lèi)型Ｂ
ESD:Electrostatic Discharge靜電放電
ESR:Errored Second Ratio 誤碼秒比率
ETDM:Electrical Time Division Multiplexing電時(shí)分復(fù)用
ETSI:European Telecommunication Standards Institute歐洲電信標(biāo)準(zhǔn)協(xié)會(huì)
F:Filter 濾波器
FAB:Fire Alarm Bell 火警警鈴
FACU:Fire Alarm Contrlol Unit 火災(zāi)自動(dòng)報(bào)警控制裝置
FC:Failure Count 失效次數(shù)
FC:Frequency Converter 頻率變換器
FCC:Fire Alarm System 火災(zāi)報(bào)警系統(tǒng)
FCS:Field Control System 現(xiàn)場(chǎng)總線(xiàn)
FCU：Favn Coil Unit風(fēng)機(jī)盤(pán)管
FD:Fire Door 防火門(mén)
FD:Flame Detector 火焰探測(cè)器
FD:Floor Distributor
FD:Frequency Dirsder 分頻器
FDD:Frequency Division Dual 頻分 雙工
FDDI：Fiberdistributed Data Interface光纖纜分布式數(shù)據(jù)接口。
FDDIF:Fiber Distributed Data Inferface光纜分布數(shù)據(jù)接口
FDMA:Frequency Division Multiple Access頻分多址
FE:Fire Extirguisher 消防電梯
FEBE:Far End Block Error遠(yuǎn)端塊誤碼
FEXT:Far End Crosstalk 遠(yuǎn)端串?dāng)_
FFES:Foam Fire Extionuishing System泡沫滅火系統(tǒng)
FH:Fire hydrant 消火栓
FI:Fee Indicator 費(fèi)用顯示器
FL:Focal Length 焦距
FL:Fuzzy Logic 模糊邏輯
FM:Faiilt Management失效管理
FPA:Fire Public Address 火災(zāi)事故廣播
FPD:Fire Public Derice 消防設(shè)施
FR:Frequency Response 頻響
FRD:Fire Resis tamt Damper 防火閥
FRS:fire resistant shutter 防火卷簾
FSK:Frequency Shift Keying移頻鍵控
FSU:Fixed Subscriber Unit單用戶(hù)固定臺(tái)
FTHD:Fixed temperatute Heat Detector 定溫控測(cè)器
FTP:Foil Tnisted Pair金屬箔雙絞電纜
FTTB:Fiber To The Building 光纖到大樓
FTTC:Fiber To The Curb光纖到路邊
FTTH:Fiber To The Home 光纖到家庭
FW:fire Wall 防火墻
FWHM:Full Width Half Maximum 脈沖的半高寬度
PACR：Attonuation to Crosstalk Ratio 衰減與串?dāng)_比　
GAP:Gaussian (filtered)Frequency Shift Keying 高斯濾波頻移鍵控
GBS:Glass Break Sensors 玻璃破碎傳感器
GC:Generic Cabling 綜合布線(xiàn)
GIB:Generic Information Block 通用信息模塊
GNE:Gateway Network Element網(wǎng)關(guān)
GSM:Global System for Mobile communications全球移動(dòng)通信系統(tǒng)
H:Hybrid 混合式
HCBS:High C Bus Servers Unit 高速C總線(xiàn)服務(wù)單元
HCS:Higher order Connection Supervision高階連接監(jiān)視
HD：Heat Detecter 感溫探測(cè)器
HDB3:High Density Bipolar of order 3code 高密度雙極性碼
HDLC:High Data Link Control 高級(jí)數(shù)據(jù)鏈路控制
HDLC:High Digital Link Control 高級(jí)數(shù)據(jù)鏈路控制
HDSL:High-bit -rate Digital Subscriber Link 高比特?cái)?shù)字用戶(hù)鏈路
HDTV:High Definition Television 高清淅度電視
HEC:Header Ervor Control:信頭差錯(cuò)控制域
HEMS:High -level Entity Management system高級(jí)實(shí)體管理系統(tǒng)
HFC:Hybrid fiber coax 光纖-同軸電纜混合系統(tǒng)
HGRP:Home Optical Network 華為公司專(zhuān)用協(xié)議
HIFI:High Fidelity 高保真度
HIPPI:High Performance Parrallel Interface高性能并行接口
HMP:Host monitoring protocol 宿主機(jī)監(jiān)視協(xié)議
HOA:High Order Assembler高階組裝器
HOAPID:High Order Path Access Point Identifier高階通道接入不敷出點(diǎn)標(biāo)識(shí)符
HOI:High Order Interface高階接口
HONET:Home Optical Network 華為綜合業(yè)務(wù)接入網(wǎng)商標(biāo)
HO-TCM:High Order Tandem Connection Monitor高階通道串聯(lián)連接監(jiān)控
HOVC:High Order Virtual Container 虛容器
HPA:High order path Adaptation高階適配
HPC:High order path Connection高階通道連接
HPOM:High -order Path Overhead Monitor高階通道開(kāi)銷(xiāo)監(jiān)視器
HPP:High -order path Protection高階通道保護(hù)
HP-RDI:Higher order path -Remote Defect Indication高階通道接收缺陷指示
HP-REI:Higher order Path-Remote ErrorIndication高階通道遠(yuǎn)端錯(cuò)誤指示
HPT:High order path Termination高階通道終端
HRDS:Hypothetical Reference Digital Section假設(shè)參考數(shù)字段
HSUT:High -order path Supervision Unequipped Termination高階通道監(jiān)控未裝裝載終
HVAC:Heating Ventilation Air Conditioning暖通空調(diào)
HWS:Hot Water Supply熱水供應(yīng)系統(tǒng)
I:Interference 串?dāng)_
IA:Intruder Alarm防盜報(bào)警
ICMP:Internet Control Message Protocol控制信息協(xié)議
IDC:Insucation Displacement Connection絕緣層信移連接件
IDS:Industrial Distribution System 工業(yè)布線(xiàn)系統(tǒng)
IFC:Intelligent Fire Controller 照明智能控制器
ILD:Inject Light Diode 注入式激光二極管
IM:Impedance Matching 阻抗匹配
IMA:Interactive Multimedia Association交互式多媒體協(xié)議
IM-DM:Intensity Modulation-Direction Modulation直接強(qiáng)度調(diào)制
IN:Information Network 信息網(wǎng)
IO：Information Outlet信息插座
IOS:Intelligent Out Station 智能外圍站
IPEI:International Portable國(guó)際移動(dòng)設(shè)備標(biāo)識(shí)號(hào)
IPTU:Indoor Pan &Tilt Unit 室內(nèi)水平俯仰云臺(tái)
IPUI:International Portable User Identity國(guó)際移動(dòng)用戶(hù)標(biāo)識(shí)號(hào)
ISD:Ionization Smoke Detector 離子感煙探測(cè)器
IT:Information Technology 信息技術(shù)
ITU:International Telecommunications Union 國(guó)際電信聯(lián)盟
ITU-T:原名CCITT，是國(guó)際電信聯(lián)盟的一個(gè)委員會(huì)
ITV:Interactive Tevevision 交互式電視
JIT-Discussion conference system 即席發(fā)言系統(tǒng)
L:Lens攝像機(jī)鏡頭 　
LAN:Local Area Network 局域網(wǎng)
LAPB：Link Access Procedure-Balanced 鏈路接入規(guī)程----平衡
LAPD:Link Access Procedure D-channel D信道鏈路訪(fǎng)問(wèn)協(xié)議
LCD:Liquid Crystal Display 液晶顯示屏
LCL:Longituchinal Conrorsion Loss縱模變換損耗
LCN:Local Communication Network 本地通信網(wǎng)
LCS:Lower order Connection Supervision低階連接監(jiān)視
LD:Laser Diode激發(fā)二極管
LE:Local Exchange本地交換網(wǎng)
LED:Light Emittirng Diode發(fā)光二極管
LIU：Lightguide Interconnection Unit光纖互連裝置
LLC:Logic Link Control Layer邏輯鏈路控制層
LLME:Low Layer Management Entity低層管理實(shí)體
LM:Lerel Modulation電平調(diào)節(jié)
LNA:Low Noise Amplifier低噪音放大器
LOF:Loss Of Frame 幀丟失
LOI:Low Order Interface低階接口
LOP:Loss Of Pointer 指針丟失
LOS:Loss Of Signal 信號(hào)丟失
LO-TCM:Low Order Tandem Connection Monitor低階通道串聯(lián)連接監(jiān)視器
LOVC:Low Order Virtual Container 低階虛容器
LPA:Lower order qath Adaptation低階通道適配
LPC:Lower order Path Connection低階通道連接
LPOM:Low-order Path Overhead Monitor低階通道開(kāi)銷(xiāo)監(jiān)視器
LPP:Low-order Path Protection 低階通道保護(hù)
LPT:Lower order Path Termination低階通道終端
LSBCM:Laser Base Current Monitor激光器偏流監(jiān)視
LSUT:Low -order path Supervision Unequipped 低階通道監(jiān)控未裝載終端
LTC:Londline Trunk Coutroller有線(xiàn)線(xiàn)路分配器
LU:Line Unit 線(xiàn)路單元
MAC:Medium Access Control Layer 介質(zhì)訪(fǎng)問(wèn)控制層
MBMC:Multiple Burst Mode Controller 多突發(fā)模式控制器
MCF:Message Communication Function消息通信功能
MD:Mediation Device中介設(shè)備