2B1Q 2Binary，1Quaternary 兩個(gè)二進(jìn)位的，一個(gè)四進(jìn)位的
AAL ATM Adaptation Layer ATM適應(yīng)層
ADSL Asymmetric Digital Subscriber Line 非對稱數(shù)字用戶線路
CDV Cell Delay Variation 信元延遲變更
CLR Cell Loss Ratio 信元丟失比率
IDLC Integrated Digital Loop Carrier 綜合數(shù)字環(huán)路載波
AD-PCM Adaptive Differential Pulse Code Modulation 適應(yīng)微分-脈沖碼調(diào)制
AM Amplitude Modulation 幅度調(diào)制
AMI Alternate Mark Inversion 交替標(biāo)記倒置
AN Access Node 訪問節(jié)點(diǎn)
ANSI American National Standards Institute 美國國家標(biāo)準(zhǔn)協(xié)會(huì)
APS Automatic Protection Switching 自動(dòng)保護(hù)開關(guān)
ARQ Automatic Repeat reQuest 自動(dòng)重復(fù)請求
AT&T American Telephone & Telegraph 美國電話/電報(bào)
ATM Asynchronous Transfer Mode 異步傳輸模式
ATU ADSL Termination Unit ADSL終端單元
AWG American Wire Gauge 美國線規(guī)
BECN Backward Explicit Congestion Notification 反向顯示擁塞通知
BER Bit-Error Rate 位誤碼率
BH Busy Hour 高峰時(shí)
BISDN Broadband Integrated Services Digital Network 寬帶綜合業(yè)務(wù)數(shù)字網(wǎng)
BOM Beginning Of Message 報(bào)頭
BRI Basic Rate Interface 基速接口
CAC Connection Admission Control 連接容許控制
CAD Computer-aided Design 計(jì)算機(jī)輔助設(shè)計(jì)
CAE Computer-aided Engineering 計(jì)算機(jī)輔助工程
CAM Computer-aided Manufacturing 計(jì)算機(jī)輔助制造
CAP Carrierless Amplitude Modulation 無載波幅度調(diào)制
CATV Cable Television or Community Antenna Television有線電視或公用天線電視
CBDS Constant Bit Rate Data Service 不變比特率數(shù)據(jù)服務(wù)
CBR Continuous Bit Rate，or Constant Bit Rate 連續(xù)的比特率或不變的比特率
CCITT Consultative Committee on International Telegraph and Telephone 國際電話和電報(bào)咨詢委員會(huì)
CFM Configuration Management 配置管理
CIR Committed Information Rate
CLEC Competitive Local Exchange Carrier 競爭的本地交換載波
CLLM Consolidated Link-Layer Management 統(tǒng)一鏈路層管理
CLP Cell Loss Priority 單元丟失優(yōu)先權(quán)
CMT Connection Management 連接管理
CO Central Office 中心局
COI Community of Interest 公共的影響（利益）
COM Continuation of Message 報(bào)文附加
COMSAT Communications Satellite Corporation 通信衛(wèi)星公司
CPE Customer Premise Equipment 客戶前提設(shè)備
CPN Customer Premises Node 客戶前提節(jié)點(diǎn)
CRC Cyclic Redundancy Check 循環(huán)冗余校驗(yàn)
CS convergence Sublayer 收斂子層
CSU Channel Service Unit 信道服務(wù)單元
DAS Dual Attachment Stations 雙附加配置工作站
DBS Direct Broadcast Satellite 直播衛(wèi)星
DCC Data Communications Channels 數(shù)據(jù)通信信道
DCE Data Communications Equipment 數(shù)據(jù)通信設(shè)備
DE Discard Eligibility 丟棄合格
DLC Digital Loop Carrier 數(shù)字環(huán)路載波
DLCI Data-Link Connection Identifier 數(shù)據(jù)鏈路連接鑒定
DMT Discrete Multitone 離散的多頻聲
DOJ Department Of Justice 司法部
DSLAM DSL Access Multiplexer DSL訪問多路復(fù)用器
DSP Digital Signal Processor 數(shù)字信令處理器
DSU Data Service Unit 數(shù)據(jù)服務(wù)單元
DTE Data Terminal Equipment 數(shù)據(jù)終端設(shè)備
DTP Data Transport Protocol 數(shù)據(jù)傳輸協(xié)議
DTPM Data Transport Protocol Machine 數(shù)據(jù)傳輸協(xié)議器
EA Extended Address 擴(kuò)展地址
ECM Coordination Management 調(diào)和管理
ECN Explicit Congestion Notification 顯示擁塞通告
ECSA Exchange Carriers Standards Association 交換信號標(biāo)準(zhǔn)協(xié)會(huì)
EO End Office 分局
EOM End of Message 報(bào)尾
ETSI European Telecommunications Standards Institute 歐洲電訊標(biāo)準(zhǔn)協(xié)會(huì)
FCC Federal Communications Commission 聯(lián)邦通信委員會(huì)
FCS Frame Check Sequence 幀校驗(yàn)序列
FDM Frequency Division Multiplexing 頻分復(fù)用
FEC Forward Error Control 轉(zhuǎn)發(fā)誤碼控制
FECN Forward Explicit Congestion Notification 轉(zhuǎn)發(fā)顯示擁塞通告
FEP Front-end Processor 前端處理機(jī)
FM Frequency Modulation 頻率調(diào)制（調(diào)頻）
FR Frame Relay 幀中繼
FRI Frame Relay Interface 幀中繼接口
FSK Frequency Shift Keying 移頻鍵控（調(diào)制），頻移鍵控（法）
FSN Full Service Network 全服務(wù)網(wǎng)絡(luò)
FTAM File Transfer Access and Management 文件傳輸訪問和管理
FTTC Fiber to the Curb 光纖到路邊
FTTN Fiber to the Node 光纖到節(jié)點(diǎn)
FTTH Fiber to the Home 光纖到家
GAN Global Area Network 全局網(wǎng)
GEOS Geo-Synchronous Satellites 地球同步衛(wèi)星
GFC Generic Flow Control 一般溢出控制
HDLC Hign-Level Data Link Control 高級數(shù)據(jù)鏈路控制
HDSL High-Speed Digital Subscriber Line 高速數(shù)字用戶線路
HDT Host Digital Terminal 主機(jī)數(shù)字終端
HDTV High-Definition Television 高清晰度電視
HE Header Extension 報(bào)頭擴(kuò)展
HEC header Error Control 報(bào)頭誤碼控制
HFC Hybrid Fiber/Coax 混合光纖/同軸
HIPPI High-Performance Parallel Interface 高性能并行接口
HOB Head of Bus 總線頭
HPNA Home Phoneline Networking Alliance 家庭電話線網(wǎng)絡(luò)聯(lián)盟
HRC Hybrid Ring Control 混合環(huán)控制
HSSI High-Speed Serial Interface 高速串行接口
HTU-C HDSL Termination Unit-Central HDSL終端單元-局端
HTU-R HDSL Termination Unit-Remote HDSL終端單元-客戶端
AAL ATM Adaptation Layer ATM適應(yīng)層
ADSL Asymmetric Digital Subscriber Line 非對稱數(shù)字用戶線路
CDV Cell Delay Variation 信元延遲變更
CLR Cell Loss Ratio 信元丟失比率
IDLC Integrated Digital Loop Carrier 綜合數(shù)字環(huán)路載波
AD-PCM Adaptive Differential Pulse Code Modulation 適應(yīng)微分-脈沖碼調(diào)制
AM Amplitude Modulation 幅度調(diào)制
AMI Alternate Mark Inversion 交替標(biāo)記倒置
AN Access Node 訪問節(jié)點(diǎn)
ANSI American National Standards Institute 美國國家標(biāo)準(zhǔn)協(xié)會(huì)
APS Automatic Protection Switching 自動(dòng)保護(hù)開關(guān)
ARQ Automatic Repeat reQuest 自動(dòng)重復(fù)請求
AT&T American Telephone & Telegraph 美國電話/電報(bào)
ATM Asynchronous Transfer Mode 異步傳輸模式
ATU ADSL Termination Unit ADSL終端單元
AWG American Wire Gauge 美國線規(guī)
BECN Backward Explicit Congestion Notification 反向顯示擁塞通知
BER Bit-Error Rate 位誤碼率
BH Busy Hour 高峰時(shí)
BISDN Broadband Integrated Services Digital Network 寬帶綜合業(yè)務(wù)數(shù)字網(wǎng)
BOM Beginning Of Message 報(bào)頭
BRI Basic Rate Interface 基速接口
CAC Connection Admission Control 連接容許控制
CAD Computer-aided Design 計(jì)算機(jī)輔助設(shè)計(jì)
CAE Computer-aided Engineering 計(jì)算機(jī)輔助工程
CAM Computer-aided Manufacturing 計(jì)算機(jī)輔助制造
CAP Carrierless Amplitude Modulation 無載波幅度調(diào)制
CATV Cable Television or Community Antenna Television有線電視或公用天線電視
CBDS Constant Bit Rate Data Service 不變比特率數(shù)據(jù)服務(wù)
CBR Continuous Bit Rate，or Constant Bit Rate 連續(xù)的比特率或不變的比特率
CCITT Consultative Committee on International Telegraph and Telephone 國際電話和電報(bào)咨詢委員會(huì)
CFM Configuration Management 配置管理
CIR Committed Information Rate
CLEC Competitive Local Exchange Carrier 競爭的本地交換載波
CLLM Consolidated Link-Layer Management 統(tǒng)一鏈路層管理
CLP Cell Loss Priority 單元丟失優(yōu)先權(quán)
CMT Connection Management 連接管理
CO Central Office 中心局
COI Community of Interest 公共的影響（利益）
COM Continuation of Message 報(bào)文附加
COMSAT Communications Satellite Corporation 通信衛(wèi)星公司
CPE Customer Premise Equipment 客戶前提設(shè)備
CPN Customer Premises Node 客戶前提節(jié)點(diǎn)
CRC Cyclic Redundancy Check 循環(huán)冗余校驗(yàn)
CS convergence Sublayer 收斂子層
CSU Channel Service Unit 信道服務(wù)單元
DAS Dual Attachment Stations 雙附加配置工作站
DBS Direct Broadcast Satellite 直播衛(wèi)星
DCC Data Communications Channels 數(shù)據(jù)通信信道
DCE Data Communications Equipment 數(shù)據(jù)通信設(shè)備
DE Discard Eligibility 丟棄合格
DLC Digital Loop Carrier 數(shù)字環(huán)路載波
DLCI Data-Link Connection Identifier 數(shù)據(jù)鏈路連接鑒定
DMT Discrete Multitone 離散的多頻聲
DOJ Department Of Justice 司法部
DSLAM DSL Access Multiplexer DSL訪問多路復(fù)用器
DSP Digital Signal Processor 數(shù)字信令處理器
DSU Data Service Unit 數(shù)據(jù)服務(wù)單元
DTE Data Terminal Equipment 數(shù)據(jù)終端設(shè)備
DTP Data Transport Protocol 數(shù)據(jù)傳輸協(xié)議
DTPM Data Transport Protocol Machine 數(shù)據(jù)傳輸協(xié)議器
EA Extended Address 擴(kuò)展地址
ECM Coordination Management 調(diào)和管理
ECN Explicit Congestion Notification 顯示擁塞通告
ECSA Exchange Carriers Standards Association 交換信號標(biāo)準(zhǔn)協(xié)會(huì)
EO End Office 分局
EOM End of Message 報(bào)尾
ETSI European Telecommunications Standards Institute 歐洲電訊標(biāo)準(zhǔn)協(xié)會(huì)
FCC Federal Communications Commission 聯(lián)邦通信委員會(huì)
FCS Frame Check Sequence 幀校驗(yàn)序列
FDM Frequency Division Multiplexing 頻分復(fù)用
FEC Forward Error Control 轉(zhuǎn)發(fā)誤碼控制
FECN Forward Explicit Congestion Notification 轉(zhuǎn)發(fā)顯示擁塞通告
FEP Front-end Processor 前端處理機(jī)
FM Frequency Modulation 頻率調(diào)制（調(diào)頻）
FR Frame Relay 幀中繼
FRI Frame Relay Interface 幀中繼接口
FSK Frequency Shift Keying 移頻鍵控（調(diào)制），頻移鍵控（法）
FSN Full Service Network 全服務(wù)網(wǎng)絡(luò)
FTAM File Transfer Access and Management 文件傳輸訪問和管理
FTTC Fiber to the Curb 光纖到路邊
FTTN Fiber to the Node 光纖到節(jié)點(diǎn)
FTTH Fiber to the Home 光纖到家
GAN Global Area Network 全局網(wǎng)
GEOS Geo-Synchronous Satellites 地球同步衛(wèi)星
GFC Generic Flow Control 一般溢出控制
HDLC Hign-Level Data Link Control 高級數(shù)據(jù)鏈路控制
HDSL High-Speed Digital Subscriber Line 高速數(shù)字用戶線路
HDT Host Digital Terminal 主機(jī)數(shù)字終端
HDTV High-Definition Television 高清晰度電視
HE Header Extension 報(bào)頭擴(kuò)展
HEC header Error Control 報(bào)頭誤碼控制
HFC Hybrid Fiber/Coax 混合光纖/同軸
HIPPI High-Performance Parallel Interface 高性能并行接口
HOB Head of Bus 總線頭
HPNA Home Phoneline Networking Alliance 家庭電話線網(wǎng)絡(luò)聯(lián)盟
HRC Hybrid Ring Control 混合環(huán)控制
HSSI High-Speed Serial Interface 高速串行接口
HTU-C HDSL Termination Unit-Central HDSL終端單元-局端
HTU-R HDSL Termination Unit-Remote HDSL終端單元-客戶端