ADM Add－Drop Multiplexer 分插复用器AI Adapted Information 适配信息AIS Alarm indication Signal 告警指示信号AP Access Point 接入点APId Access Point Identifier 接入点识别符APS Automatic Protection Switching 自动保护倒换ATM Asynchronous Transfer Mode 异步转移模式AU Asynchronous Unit 管理单元AU－n Administrative Unit , level u 管理单元，第n级AUG Administrative Unit Group 管理单元组BER Bit Error Ratio 比特误码率BBER Background Block Error Ratio 背景块误码率BIP Bit Interleaved Parity 比特间插奇偶校验C Connection function 连接功能CI Characteristic Information 特征信息CK Clock 时钟CM Connection Matrix 连接矩阵CMISE Common Management Information Service 公用管理信息服务单元CP Connection Point 连接点CSES Consecutive Severely Errored Seconds 连续严重误码秒D Data 数据DCC Data Communications Channel 数据通信通路DS Defect Second 缺陷秒DEG Degraded 劣化DEGTHR Degraded Threshold 劣化门限DXC Digital Cross Connect 数字交叉连接EI2 Electrical interface signal 2 048 kbit/s 2048kbit/s电接口信号E31 Electrical inte4ace signal 34 368 kbit/s 34368kbit/s电接口信号E4 Electrical inte4ace signal 139264kbit/s电接口信号EBC Errored Block Count 误码块计数EDC Error Detection Code 误码检测码EDCV Error Detection Code Violation 误码检测码违倒EMF Equipment Management Function 设备管理功能EQ Equipment 设备ES Electrical Section 电气段，电段ESl Electrical Section ,levell STM－1电段ES Errored Second 误码秒Eq Recommendation G.703 type G.703类型电接口，electrical signal, q表示比特率等级bit rate order q(q = 1l, 12,21,22,31,32,4) q = 1l, 12,21,22, 31,32,4ExSL Expected Signal label 期望信号标识ExTT Expected Trace Identifier 期望踪迹识别符F_B Far－end Block 远端块F_DS Far－end Defect Second 远端缺陷秒F_EBC Far－end Errored Block Count 远端误码块计数FAS Frame Alignment Signal 帧定位信号FM Fault Management 故障管理FOP Failure Of Protocol 协议失效FS Forced Switch 强制倒换FS Frame Start signal 帧起始信号HO Higher Order 高阶HOA Higher Order Assembler 高阶组装器HOI Higher Order Interface 高阶接口HOVC Higher Order Virtual Container 高阶虚容器HP Higher order Path 高阶通道HPA Higher order Path Adaptation 高阶通道适配HPC Higher order Path Connection 高阶通道连接HPOM Higher order Path Overhead Monitor 高阶通道开销监视HPP Higher order Path Protection 高阶通道保护HPT Higher order Path Termination 高阶通道终接HSUT Higher order path Supervisory 高阶通道监视未装载终接Unequipped TerminationHTCA Higher order path Tandem 高阶通道串联连接适配Connection AdaptationHTCT Higher order path Tandem 高阶通道串联连接终接Connection TerminationHTCM Higher order path Tandem 高阶通道串联连接监视Connection MonitorID Identifier 识别符IF In Flame state 输入帧状态LO Lower Order 低阶LOA Loss Of Alignment ; generic 定位丢失(一般指LOF、LOM、for LOF ,LOM ,LOP LOP)LOF Loss Of Frame 帧丢失LOI Lower Older Interface 低阶接口LOM Loss Of Multi frame 复帧丢失LOP Loss Of Pointer 指针丢失LOS Loss of Signal 信号丢失LOVC Lower Order Virtual Container 低阶虚容器LP Lower order Path 低阶通道LPA Lower order Path Adaptation 低阶通道适配LPC Lower older Path Connection 低阶通道LPOM Lower order Path Overhead Monitor 低阶通道开销监视LPP Lower order Path Protection 低阶通道保护LPT Lower order Path Termination 低阶通道终接LSUT Lower older path Supervisory 低阶通道监视未装载终接Unequipped TerminationLTCA lower order path Tandem 低阶通道串联连接适配Connection AdaptationLTCT Lower order path Tandem 低阶通道串联连接终接Connection TerminationLTCM Lower order path Tandem 低阶通道串联连接监视Connection MonitorLTI Loss of all incoming Timing references 输入定时基准全丢失MC Matrix Connection 矩阵连接MCF Message Communications Function 消息通信功能MI Management Information 管理信息MP Management Point 管理点MRITE Maximum Relative Time Interval Error 最大相对时间间隔误差MS Manual Switch 人工倒换MS Multiplex Section 复用段MSA Multiplex Section Adaptation 复用段适配MSn Multiplex Section layer , STM－N复用段层，n=1,4,16sublayer ,level level n ( n = l 、4、16)MSnP Multiplex Section protection STM－N复用段保护子层，n( n= l、4、16) n( n= l、4、16)MSOH Multiplex Section Overhead 复用段开销MSP Multiplex Section protection 复用段保护MST Multiplex Section Terminatio 复用段终接MTIE Maximum Time Interval Error 最大时间间隔误差N_B Near－end Block 近端块N_BBE Near－end Background Block Error 近端背景块误码N_DS Near－end Defect Second 近端缺陷秒N_EBC Near－end Errored Block Count 近端误码块计数NC Network Connection 网络连接NDF New Data Flag 新数据标识NE Network Element 网络单元，网元NEF Network Element Function 网元功能NNI Network Node Interface 网络节点接口NU National Use 国内使用OAM Operation , Administration 操作、管理与维护and MaintenanceODI Outgoing Defect Indication 输出缺陷指示OEI Outgoing Error Indication 输出误码指示OFS Out－of－Flame Second 帧失步秒OHA OverHead Access 开销接入OOF Out Of Frame 帧失步OS Optical Section 光段OSn Optical Section layer，STM－N光段层，n = l,4, 16 level n (n = l,4, 16)OW Order Wire 公务PI2s 2048kbit/s PDH path layer 具有G.704的125μs同步帧with synchronous 125μs 结构的2048kbit/s PDH通道层frame structure according to G.704PI2x 2048kbit/s layer (transparent) 2048kbit/s(透明)层P31e 34368kbit/s PDH path layer 带有4个准同步8448kbit/s with 4 plesiochronous 8448kbit/s 的34368kbit/sPDH通道层P31s 34368kbit/s PDH path layer 具有G.832的125μs同步帧with synch ronous 125μs 结构的34368kbit/s PDH通道frame structure according to G.832 层P31x 34368kbit/s layer (transparent ) 34368kbit/s(透明)层with 3 plesiochronous 44736kbit/sP4e 139 264 kbit/s POH path layer 带有4个准同步34368kbit/s with 4 plesiochronous 34 368kbit/s 的139264kbit/sPDH通道层P4s 139264kbit/s PDH path layer 具有G.832的125μs同步帧with plesiochronous 125μs 结构的139264kbit/s PDHframe structure according to G.832 通道层P4x 139264kbit/s layer (transparent) 139264kbit/s(透明)层PDH Plesiochronous Digital Hierarchy 准同步数字体系PLM Payload Mismatch 净荷失配PPI PDH Physical Interface PDH物理接口PJC Pointer Justification Count 指针调整计数PJE Pointer Justification Event 指针调整事件PM Performance Monitoring 性能监视POH Path Over Head 通道开销Pq PDH path layer, PDH通道层，比特率等级为bit late order q(q = 1l、12、21、q q = 1l、12、21、22、31、32、4) 22、31、32、4 PRC Primary Reference Clock 主基准时钟PS Protection Switching 保护倒换PSC protection Switch Clock 保护倒换计数PSD Protection Switch Duration 保护倒换时间PSE Protection Switch Event 保护倒换事件PSS Protection Switch Second 保护倒换秒PTR Pointer 指针RDI Remote Defect Indication 远端缺陷指示REI Remote Error Indication 远端误码指示RI Remote Information 远端信息RP Remote Point 远端点RS Regenerator Section 再生段RSn Regenerator Section STM－N再生段，layer ,level n ( n = I、4、16) n = I、4、16RSOH Regenerator Section OverHead 再生段开销RST Regenerator Section Termination 再生段终接RxSL Received Signal Label 接收信号标识RxTI Received Trace Identl8er 接收踪迹识别符S12 VC－12 path layer VC－12通道层S12D VC－12 tandem protection sublayer VC－12串联连接子层S12P VC－12 path protection sublayer VC－12通道保护子层S3 VC－3 path layer VC－3通道层S3D VC－3 tandem connection sublayer 使用G.707附录D(选项2)定using TCM definition according annex 义的TCM的VC－3串联连接D/G.707 (option 2) 子层S3P VC－3 path protection sublayer VC－3通道保护子层S3T VC－3 tandem connection sublayer 使用G.707附录C(选项1) using TCM definition according annex 定义的TCM的VC－3串联连C/G. 707 (option l) 接子层S4 VC－4 path layer VC－4通道层S4D VC－4 tandem connection sublayer 使用G.707附录C(选项2)using TCM definition according annex 定义的TCM的VC－4串联连D/G. 7G7 (option 2) 接子层S4P VC－4 path protection sublayer VC－4通道保护子层S4T VC－4 tandem connection sublayer 使用G.707附录C(选项1) using TCM de8nition according annex 定义的TCM的VC－4串联连C/G.707 (option l) 接子层SD Signal 信号劣化SDH Synchronous Digital Hierarchy 同步数字体系SDXC Synchronous Digital 同步数字体系交叉连接hierarchy Cross－ConnectSEC SDH Equipment Clock SDH设备时钟SEMF Synchronous Equipment 同步设备管理功能SES Severely Errored Second 严重误码秒SETG Synchronous Equipment Timing Generator 同步设备定时发生器Timing Physical InterfaceSEIPI Synchronous Equipment 同步设备定时物理接口SETS Synchronous Equipment Timing Source 同步设备定时源SF Signal Fail 信号失效Sk Sink (信息、信号)宿Sm lower order VC－m layer 低阶VC－m层(m = 11, 12,2,3)(m = 11, 12,2,3)SmD D VC－m (m=11,12,2,3)tandem connection VC－m串联连接子层Sublayer (m = 11, 12,2,3)SmDm Lower Older Tandem Connection 低阶串联连接非插入监视Non－Intrusive MonitorSmm VC－m (m=11,12,2,3)path layer VC－m通道层非插入监视non－intrusive monitor (m =11, 12,2,3)SmP VC－m (m=11,12,2,3)path VC－m通道保护子层protection sublayer (m = 11, 12,2,3)Sms VC－m(m=11,12,2,3)path layer VC－m通道层监视未装载supervisory－unequipped (m = 11, 12,2,3)Sn higher order VC－n layer (n=3,4) 高阶VC－n(n=3,4)SnD VC－n(n=3,4) tandem connection 使用G.707附录D(选项2)定sublayer using TCM de8nition 义的TCM的VC－n(n=3,4)串according annex D/G. 707(option 2) 联连接子层SnDm Higher Older Tandem Connection 高阶串联连接非插入监视Non－Intrusive MonitorSnm VC－n(n=3,4)path layer VC－n(n=3,4)通道层非插入监视non－intrusive monitorSnP VC－n(n=3,4) path protection sublayer VC－n(n=3,4)通道保护子层Sns VC－n (n=3,4) path layer VC－n(n=3,4)通道层监视未装载supervisory－unequippedSnT VC－n (n=3,4) tandem connection 使用G.707附录C(选项1)定sublayer using TCM definition 义的TCM的VC－n(n=3,4)串according annex C/G. 707(option l) 联连接子层SnTm Higher Order Tandem Connection 高阶串联连接非插入监视Non－Intrusive MonitorSNC Sub－Network Connection 子网连接SNC/I inherently monitored Sub－Network 固有监视子网连接保护Connection protectionSNC/N Non－intrusively monitored Sub－Network 非插入监视子网连接保护Connection protectionSNC/S Sublayer (tandem connection ) monitored 子层(串联连接)监视子Sub－Network Connection protection 网连接保护So Source (信息、信号)源SOH Section Overhead 段开销SPI SDH Physical Interface SDH物理接口SPRING Shared Protection Ring 共享保护环SSD Sewer Signal Degrade 严重信号劣化SSF Server Signal Fail 严重信号失效SSM Synchronization Status Message 同步状态消息SSU Synchronization Supply Unit 同步供给单元STM Synchronous Transport Module 同步传送模块TCM Tandem Connection Monitor 串联连接监视TCP Termination Connection Point 终接连接点TD Transmit Degrade 发送劣化TF Transmit Fall 发送失效TFAS trail Trace identifier 路径踪迹识别符帧定位信号Frame Alignment SignalTI Timing Information 定时信息TTM Trace Identi8er Mismatch 踪迹识别符失配IMN Telecommunications Management Network 电信管理网IP Timing Point 定时点TF Transmit Termination Point mode 终接点模式IS Time Slot 时隙TSD Trail Signal Degrade 路径信号劣化TSF Trail Signal Fail 路径信号失效TSL Trail Signal label 路径信号标识TT Trail Termination function 路径终接功能TTF Transport Termination Function 传送终接功能TTs Trail Termination supervisory function 路径终接监视功能TTI Trail Trace Identifier 路径踪迹识别符TTP Trail Termination Point 路径终接点TU Tributary Unit 支路单元TU－m Tributary Unit , level m 支路单元，m等级TUG Tributary Unit Group 支路单元组TUG－m Tributary Unit Group , level m 支路单元组，m等级TxSL Transmitted Signal Label 发送信号标识TxTI Transmitted Trace Identifier 发送踪迹识别符UNEQ UNE quipped 未装载UNI User Network Interface 用户网络接口USR User channels 用户通路VC Virtual Container 虚容器VC－n Virtual Container , level n 虚容器，n等级VP Virtual Path 虚通道W Working 主用，工作A2 原子功能符号缩略语EI2_TT 2048kbit/s Electrical hlte4ace 电接口信号终接2048kbit/s Signal Trail TerminationE12/P12x_A 2048 kbit/s Electrical Interface 2048kbit/s电接口信号/ Signal to 2048 kbit/s Adaptation 2048kbit/s适配E31_TT 34 368 kbit/s Electrical 34 368 kbit/s 电接口Interface Signal Trail Termination 信号终接E31/P31x_A 34368 kbit/s Electrical 34 368 kbit/s 电接口interface Signal to 34 368 信号/34368kbit/s适配kbit/a AdaptationE4_TT 139 264 kbit/s Electrical 139 264 kbit/s电接口信号终Interface Signal Trail Termination 接E4/P4x_A 139 264 kbit/s Electrical 139 264 kbit/s电接口信号终Inte4ace Signal to 139 接/139264kbit/s适配264kbit/s AdaptationES1/RS1_A STM－l Electrical Section to STM－l电段/STM－1再生Regeneratoe Section Adaptation 段适配ES1_TT STM－1Electrical Section Trail Termination STM－l电段终接MS1_TT STM－l Multiplex Section Trail Termination STM－l复用段终接MS1/S4_A STM－1 Multiplex Section to VC－4 higher STM－l复用段/VC－4通order path Adaptation 道适配MS1/SD_A STM－1 Multiplex Section to Signal STM－l复用段/信号劣Degrade Adaptation 化适配MSI/OW_A STM－1 Multiplex Section to STM－l复用段/公务通信适配Older－wire AdaptationMS1/DCC_A STM－1 Multiplex Section to Data STM－l复用段/DCC通道适配Communications Channel AdaptationMSn_TT STM－N Multiplex Section STM－N复用段终接Trail TerminationMSn/MSnP_A Multiplex Section to Multiplex STM－N复用段/STM－N复用Section Protection Adaptation 段保护适配MSnP_C STM－N Multiplex Section STM－N复用段保护连接Protection ConnectionMSnP－TT STM－N Multiplex Section Protection STM－N复用段保护终接Trail TerminationMSn/S4_A STM－N Multiplex Section to VC－4 STM－N复用段/VC－4通道适higher order path Adaptation 配MSn/SD_A STM－N Multiplex Section to STM－N复用段/信号劣化适配Signal Degrade AdaptationMSn/OW_A STM－N Multiplex Section to STM－N复用段/公务通信适配Order－wire AdaptationMSn/DCC_A STM－N Multiplex Section to Data STM－N复用段/DCC通道适配Communications Channel AdaptationOSn_TT STM－N( Optical Section Trail Termination STM－N光段终接OSn/RSn_A Optical Section to Regenerator STM－N光段/STM－N再Adaptation 生段适配P4x－n 139 264 kbit/s Signal Trail Termination 139 264 kbit/s 终接P4x/P12x_A 139 264 kbit/s Signal to 139 264 kbit/s2 048 kbit/s Signal Adaptation /2048kbit/s适配RS1_TT STM_1 Regeneration Section Termination STM－1再生段终接RSn_TT STM－N Regeneration Section Termination STM－N再生段终接RSn/MSn_A Regeneration Section to STM－N再生段/STM－N复Multiplex Section Adaptation 用段适配BSn/User_A Regeneration Section to User STM－N再生段/用户Channel Adaptation 通道适配RSn/OW_A Regeneration Section to STM－N再生段/公务通信适配Order－wile AdaptationRSn/DCC_A Regeneration Section to Data STM－N再生段/DCC通道Communications Channel Adaptation 适配SI2_ TT VC－12 lower order path Trail Termination VC－12通道终接SI2/PI2x_A VC－12 lower order path to VC－12通道/2048kbit/s2 048 kbit/s signal Adaptation 信号适配SI2/S 12P_A VC－12 lower order path to VC－12通道/VC－12VC－12 path Protection Adaptation 通道保护适配SI2P－C VC－12 path Protection Connection VC－12通道保护连接SI2P_TT VC－12 path Protection Trail Termination VC－12通道保护终接S3_TT VC－3 path Trail Termination VC－3通道终接S3/S3P_A VC－3 path to VC－3 path . VC－3通道/VC－3Protection Adaptation 通道保护适配S3/P3Ix_A VC－3 path to 34 368kbit/s VC－3通道/34368signal Adaptation kbit/s适配S3P_C VC－3 path Protection Connection VC－3通道保护连接S3P_TT VC－3 path Protection Trail Termination VC－3通道保护终接S4_C VC－4 path connection VC－4通道连接S4_TT VC－4 path Trail Termination VC－4通道终接S4P_TT VC－4 path Protection Trail Termination VC－4通道保护终接S4/S12_A VC－4 path to VC－4 path Adaptation VC－4通道/VC－12通道适配S4/S3_A VC－4 path to VC－3 path Adaptation VC－4通道/VC－3通道适配S4/S4P_A VC－4 path to VC－4 path VC－4通道/VC4protection Adaptation 通道保护适配S4P_C VC－4 path Protection Connection VC－4通道保护连接S4D_TT VC－4 path Tandem Connection VC－4串联连接终接Trail TerminationS4Dm_TT VC－4 path Tandem Connection VC－4串联连接非插入监视Non－Intrusive MonitorS4D/S4_A VC－4 path Tandem Connection VC－4串联连接/VC－4 Adaptation 通道适配S4m_T VC－A path Non－Intrusive Monitor VC－4通道非插入监视S4s_TT VC－4 path Supervisory－Unequipped VC－4通道监视未装载终接TerminationS4Tm_TT VC－4 path Tandem Connection VC－4串联连接非插入监视Non－Intrusive MonitorS4T_TT VC－4 path Tandem Connection VC－4串联连接监视终接Trail TerminationS4T/S4_A VC－4 path Tandem Connection VC－4串联连接适配AdaptationS4/User_A VC－4 path to User path Adaptation VC－4通道/用户通道适配Sm_C VC－m lower order path Connection 低阶通道连接SmD_TT VC－m low order path Tandem Connection 低阶通道串联连接终接Trail TerminationSmD/Sm_A VC－m lower order path Tandem Connection 低阶通道串联连接/ Adaptation 低阶通道适配SmDm_TT VC－m lower order path Tandem Connection 低阶通道串联连接Non－Intrusive Monitor 非插入监视Smm_TT VC－m lower older path Non－低阶通道非插入监视Intrusive MonitorSms_TT VC－m lower order path Supervisory－低阶通道监视未装载终接 Unequipped Termination交叉连接Cross connect终端复用器TM Terminal multiplexer分插复用器ADM Add & drop multiplexer再生器REG Regenerator时钟板STG unit (synchronous timing generator)主控板SCC unit (system control and communication)公务板Order wire unit点到点Point-to-point光接口Optical interface电接口Electrical interface环回、穿通或交叉Loopback, feed-through or cross connection串并/并串转换Serial-parallel/parallel-serial conversion 开销提取/合成Overhead extraction/synthesis虚容器Virtual container映射/解映射Mapping/demapping空分Space division线路单元与支路单元Line unit and tributary unit锁相Phase-lock定时基准Timing reference带电插拔Hot plug铃流Ringing current外同步模式External synchronization mode同步保持模式Synchronous holdover mode内部自由振荡模式Internal free-run mode指针调整Pointer justification抖动Jitter(抑制)漂移(suppress) wonder公务电话Order wire telephone以太网接口Ethernet interface二纤自愈环Two-fiber self-healing ring网元Network element (NE)同轴转接盒Coaxial transit box壁挂Wall-mounted插板Plugboard板位Board position背面板Back panel接线区Wiring area引线Leading wire跳线Jumper平衡接口Balanced interface非平衡接口Non-balanced interface双绞线Twisted pair line卡板槽Card trough平放式安装Horizontal installation前面板Front panel保险管Protective tube指示灯Indicating lamp恢复式通道倒换Revertive path switching非恢复式通道倒换Non-revertive path switching未开工Not in service开工In service一次保安单元Primary protective unit满配置Full configuration单向Unidirectional双向Bi-directional通道保护和复用段保护Path protection and multiplex section protection倒换Switching开销单元（OHP）Overhead processing unit输出阻抗Output impedance信号标记Signal label开销字节Overhead byte同步源Synchronous source时钟源Clock source正向Positive时隙源Timeslot source时隙宿Timeslot sink反向Negative双向Both-way故障定位Fault localization功能块Functional block危急告警Critical主要告警Major次要告警Minor提示告警Warning15分钟周期15-minute period复选框Check box对象集Object set非零Non-zero不可用时间Unavailable time (UAT)越限Threshold-crossing信号丢失Loss of signal劣化Deterioration光路Optical path对端Opposite terminal帧丢失Loss of frame高阶通道Higher-order path管理单元Administrative unit (AU)误码Bit error连接器Connector衰减Attenuation指针调整记数Pointer justification count (PJC)PJCHIGH（指针正调整）和PJCLOW（指针负调整）Pointer justification high and p ointer justification low光时域反射计OTDR Optical time domain reflectometer尾纤Tail fiber远端自环Remote self-loop配线架MDF (main distribution frame)管理域Management domain光纤连接器Optical connector保护倒换Protection switching双纤单向通道保护环Two-fiber unidirectional path protection ring报表Report网管图标NM icon子网Sub-network子架Sub-rack在线帮助On-line help串口线Serial port line波特率Baud rate常亮Normally on结果码Object code复用段适配Multiplex section adaptation接触不良Poor contact用户手册1跟踪模式、自由振荡和保持模式Locked mode, free-run mode and hold-over mode 沟槽Trough静电吸附Electrostatic adherence粒径Particle size一次电源Primary power supply尖峰电压Peak voltage防静电手腕Anti-electrostatic wrist瞬变过程Transient process低通滤波器Low-pass filter滤波电容Filtering capacitance防雷Lightening-protection避雷针Lightening arrestor光衰耗器Optical attenuator光功率计Optical power meter接插件Plug-in unitOOF接收帧失步Out of frame碰线Swinging crossTU指针丢失TU loss of pointer导航树Navigation tree网元图标NE iconLOC收时钟丢失告警Loss of clock未装载Unequipped溢出Overflow失配Mismatch再生段Regenerator section未扰码字节Unscrambled bytesSDH Synchronous Digital Hierarchy 同步数字系列PDH Plesiochrous Digital Hierarachy 准同步数字系列SBS Synchronous information Bone System 同步信息骨干系统STM` Synchronous Transport Module 同步传输模块STG Synchronous Timing Generator 同步定时发生器SCC System Control &Communication 系统通信控制ECC Embedded Control Channel 嵌入控制通道SL1 Synchronous Line STM-1 155520kbit/s同步线路光接口板SL2 2 x Synchronous Line STM-1 155520kbit/s同步线路双光接口板SL4 Synchronous Line STM-4 622080kbit/s同步线路光接口板SLE Synchronous Line STM-1 Electrical 155520kbit/s同步线路电接口板SE2 2 x Synchronous Line STM-1 Electrical 155520kbit/s同步线路双电接口板PL1 PDH Line E1 16x 2048kbit/s电接口支路板PD1 PDH Double 16-line E1 32x 2048kbit/s电接口支路板PL3 PDH Line E3/DS3 3x34368kbit/s、3x44736kbit/s 电接口支路板PL4 PDH Line E4 139264kbit/s电接口支路板TXC Tributary Cross-connection for STM-16 2.5G低阶交叉连接板X16 High-order Cross-connection for STM-16 2.5G高阶交叉连接板GTC General Timeslot Cross-connection 通用时隙交叉连接板R16 Receiver of STM-16 2488320kbit/s同步线路光接收板T16 Transmitter of STM-16 2488320kbit/s同步线路光发送板ASP Administrative Unit Signal Processing 同步线路管理单元信号处理板PWS Power Supply 二次电源板BA2 2 x Booster Amplifier 双路光功率放大器板TDA Tone&Data Access 音频数据接口板OAM Operation Administration and Maintenance 运行、管理、维护OHP Overhead Processor 开销处理板SBSMN SBS Management Network SBS网管系统RMS Religion Management System 区域管理系统AIS Alarm Indication Signal告警显示信号ALS Automatic Laser Shutdown自动激光关断APS Automatic Protection Switching自动保护倒换AU Administrative Unit 管理单元AUG Administrative Unit Group 管理单元组BER Bit Error Ratio 误码率BIP Bit Interleaved Parity 比特间插奇偶校验CM Connection Matrix 连接矩阵CMISE Common Management Information Service Element 公共管理信息业务单元DCC Data Communications Channel 数据通信通路EOW Engineering Order-Wire 工程联络线（公务）ES Errored Second 误码秒FAL Frame Alignment Loss 帧同步丢失FEBE Far End Block Error 远端成块误码FERF Far End Receive Failure 远端接收故障HCS Higher order Connection Supervision 高阶连接监督HOA Higher Order Assembler 高阶组装HOI Higher Order Interface 高阶接口HP Higher order Path 高阶通路HPA Higher order Path Adaptation 高阶适配HPC Higher order Path Connection 高阶通路连接HPOM Higher order Path Overhead Monitor 高阶通路开销监视HPT Higher order Path Termination 高阶通路终结LOF Loss Of Frame 帧失步LOI Lower Order Interface 低阶接口LOM Loss Of Multiframe 复帧丢失LOP Loss Of Pointer 指针丢失LOS Loss Of Signal 信号丢失LP Lower order Path 低阶通路LPA Lower order Path Adaptation 低阶通路适配LPC Lower order Path Connection 低阶通路连接LPOM Lower order Path Overhead Monitor 低阶开销监视LPT Lower order Path Termination 低阶通路终结LTI Loss of all Incoming Timing referencesLUG Lower order path Unequipped GeneratorMCF Message Communications Function 消息通信功能MRTIE Maximum Relative Time Interval ErrorMS Multiplex Section 复用段MSA Multiplex Section Adaptation 复用段适配MSOH Multiplex Section OverHead 复用段开销MSP Multiplex Section Protection 复用段保护MST Multiplex Section Termination 复用段终结MTIE Maximum Time Interval ErrorNDF New Data FlagNE Network Element 网元NEF Network Element Function 网元功能NNI Network Node Interface 网络节点接口OOF Out Of Frame 帧失步PDH Plesiochronous Digital Hierarchy 准同步数字系列PPI PDH Physical Interface PDH物理接口PJE Pointer Justification Event 指针调整事件POH Path OverHead 通路开销PSE Protection Switch Event 保护倒换事件RS Regenerator Section 再生段RSOH Regenerator Section OverHead 再生段开销RST Regenerator Section Termination 再生段终结SD Signal Degrade 信号劣化SDH Synchronous Digital Hierarchy 同步数字系列SDXC Synchronous Digital hierarchy Cross-Connect 同步数字系列交叉SEMF Synchronous Equipment Management Function 同步设备管理功能SES Severely Errored Second 严重误码秒SETG Synchronous Equipment Timing Generator 同步设备定时发生器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SLM Signal Label Mismatch 信号失配SPI SDH Physical Interface SDH物理接口TMN Telecommunications Management Network 电信管理网TU Tributary Unit 支路单元Terminologies used to specify topology in theSDH/SONET worldPTE:P ath T erminating E quipmentAll interfaces where the SDH/SONET Path Overhead [POH] is terminated qualify as Path Terminating Equipments. For example: a POS interface on a routerTrailA trail defines a section inside a transmission network between two elements (at the same layer) where any kind of overhead information is generated and analyzedPathA path is a specific trail in the path layer of a transmission network - for example, inside an SDH network between two elements that generate the Path Overhead (POH) of a Virtual Container.TrunkA Trunk is a transmission line between two SDH/SONET switches (GEANT2 definition, may not be standardized)Multiplex SectionA Multiplex Section is a section between two SDH/SONET Cross-connects. Multiplex section overheads in SDH/SONET frames are analyzed and changed at every multiplex section hop. In SONET, this is referred to as a line section.Regenerator SectionA Regenerator Section is a section between two equipments where regeneration of the electrical signal takes place.The diagram below might help in better understanding of the above topology terms[edit]Terminologies used for MonitoringES: E rrored S econdA one-second period with one or more errored blocks or at least one defectSES: S everely E rrored S econdsA one-second period which contains ≥ 30% errored blocks, or at least one defect.UAS: U n A vailable S econdsA one-second period belonging to the Unavailable Time (UAT). A period of UAT begins at the onset of 10 consecutive SES events (which are considered to be part of the UAT). A new period of available time begins at the onset of 10 consecutive non-SES events (which are considered to be part of the available time)[edit]Terminologies specific to certain equipment (Alcatel at least)NMS: N etwork M anagement S ystemAlcatel's Network Management System (NMS) provides the capability to manage SDH (Synchronous Digital Hierarchy) and WDM (Wavelength Division Multiplexing) network infrastructure by providing the functionality of configuring, visualizing and monitoring the status of Network Elements and Performance Measurement Points.NM: N etwork Element M anagerManagement system closest to a network element which knows stores configuration and status information only about the network element that it is associated with.RM: R esource M anagerManagement system which co-ordinates with all Network Elements via the NM to configure and get status information of the whole network. The RM has a network wide view (status, topology and configuration) with the help of which it correlates the information provided by different network elements and presents it to the user.PMP: P erformance M easurement P ointA point configured on the NMS where (at least) SDH/SONET metrics will be collected and available for viewing/retrieval.。