Data 數(shù)據(jù) 
    DAVIC(Digital Audio Video Council) 數(shù)字音視頻理事會 
    DB(Data Broadcasting) 數(shù)據(jù)廣播 
    DB(deciBel) 分貝 
    DBS(Direct Broadcast Satellite) 直播衛(wèi)星 
    DC(Direct Current) 直流 
    DCF(Dispersion Compensation Fiber) 色散補償光纖，也叫色散位移光纖 
    DC-SMF(Dispersion Compensation Single Mode Fiber) 色散補償單模光纖 
    DCT(Discrete Cosine Transform) 離散余弦變換 
    DFB(Distributed FeedBack) 分布反饋(激光器) 
    DFB-LD(Distributed FeedBack－LD) 分布反饋型－激光二極管 
    DFT(Eiscrete Fourier Transformation) 離散傅里葉變換 
    DHCP(Dynamic Host Configuration Protocol) 動態(tài)主機配置協(xié)議 
    DIB(Digital Integrated Broadcasting) 數(shù)字綜合廣播 
    Digital 數(shù)字的 
    Distribution Point 分配點 
    DLL(Data Link Layer) 數(shù)據(jù)鏈路層 
    DLS(Dynamic Label Segment) 動態(tài)標記段 
    DMB(Digital Multimedia Broadcasting)數(shù)字多媒體廣播 
    DOCSIS(Data Over Cable Service Interface Specification) 有線電視網(wǎng)絡(luò)上的數(shù)據(jù)接口規(guī)格 
    Downstream 下行 
    DQDB(Distributed Queue Double Bus) 分布隊列雙總線 
    DRC(Dynamic Range Control) 動態(tài)范圍控制 
    DSCTy(Data Service Component Type) 數(shù)據(jù)業(yè)務(wù)成分類型 
    DSF(Dispersion Shift Fiber) 色散位移光纖 
    DSL(Digital Subscriber Line) 數(shù)字用戶線路 
    DSM(Digital Storage Media) 數(shù)字的存儲或傳輸器件 
    DSP(Digital Signal Processor) 數(shù)字信號處理器 
    DTV(Digital TV) 數(shù)字電視 
    DVB(Digital Video Broadcasting) 數(shù)字視頻廣播 
    DVB-C(Digital Video Broadcasting－Cable) 用于電纜的數(shù)字視頻廣播 
    DWDM(Denseness Wavelength Division Multiplexing) 密集波分復(fù)用 
    DXC(Digital Cross Connection) 數(shù)字交叉連接(設(shè)備) 
    EBU(European Broadcasting Union) 歐洲廣播聯(lián)盟 
    Echo Rating 回波值 
    ECM(Entitlement Checking Message) 授權(quán)校驗信息 
    EDFA(Erbium-Doped Fiber Amplifier) 摻餌光纖放大器 
    EDTV(Enhanced definition Television) 增強清晰度電視 
    EIA(Electronic Industries Association) 電子工業(yè)協(xié)會 
    EIRP(Equivalent Isotropic Radiated Power) 等效全向輻射功率 
    Eld(Ensemble Identifier) 信號群(組)標志 
    EMM(Entitlement Management Message)授權(quán)管理信息 
    EPG(Electronic Program Guides) 電子節(jié)目指南 
    Equalization 均衡 
    ERP(Equivalent Radiated Power) 等效輻射功率 
    ESR(Error block Second Ratio) 誤塊秒率 
    Ethernet 以太(網(wǎng)) 
    ETI(Ensemble Transport Interface) 信號群(組)傳輸接口 
    ETI(NA)｛Ensemble Transport Interface(Network-Adapted)｝ 網(wǎng)絡(luò)適應(yīng)的信號群(組)傳輸接口 
    ETN(Ensemble-Transport-Network) 信號群(組)傳輸網(wǎng)絡(luò) 
    ETS(European Telecommunications Standard) 歐洲通信標準 
    ETSI(European Telecommunications Standards Institute) 歐洲通信標準學(xué)會 
    FCC(Federal Communications Commission) 聯(lián)邦通信委員會 
    FDDI(Fiber Distributing Data Interface) 光纖分布式數(shù)據(jù)接口 
    FDM(Frequency Division Multiplexing) 頻分復(fù)用 
    FDMA(Frequency Division Multiple Access) 頻分多址 
    FEC(Forword Error Correction) 前向糾錯 
    Feed 饋送 
    Feedback Error Correction 反饋糾錯 
    FF(Feed Forword) 前饋(放大器) 
    FFT(Fast Fourier Transformation) 快速傅里葉變換 
    FI(Frequency Information) 頻率信息 
    FIB(Fast Information Block) 快速信息塊 
    FIC(Fast Information Channel) 快速信息信道 
    FIDC(Fast Information Data Channel) 快速信息數(shù)據(jù)通道 
    FIDCId(Fast Information Data Channel Identifier) 快速信息數(shù)據(jù)通道標志 
    FIG(Fast Information Group) 快速信息組 
    FM(Frequency Modulation):頻率調(diào)制(調(diào)頻) 
    FML(Frequency modulated Microwave Link) 調(diào)頻微波鏈路 
    FP-LD(Fabry-Perot Laser Diode) 法布里－珀羅激光二極管 
    Frequency 頻率 
    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) 光纖到戶
    FTTSA(Fiber To The Service Area) 光纖到服務(wù)區(qū)