开放业务接入 Open Service Access
开放最短路径 Open Short Path First
开放式最短路径优先协议 Open Shortest Path Firest Protocol
开放系统互联 Open Systems Interconnection
开放系统互连(参考模型) OPEN SYSTEMS INTERCONNECTION (REFERENCE MODEL)
操作系统 Operating System
运行系统功能 Operating System Function
操作和维护 Operation & Maintenance
操作维护中心 Operation and Maintenance Center
操作维护中心(OMC) operation and maintenance centre
操作维护链路 Operation and Maintenance LinkCentre
操作维护台 Operation and Maintenance Station
开放最短路径 Open Short Path First
开放式最短路径优先协议 Open Shortest Path Firest Protocol
开放系统互联 Open Systems Interconnection
开放系统互连(参考模型) OPEN SYSTEMS INTERCONNECTION (REFERENCE MODEL)
操作系统 Operating System
运行系统功能 Operating System Function
操作和维护 Operation & Maintenance
操作维护中心 Operation and Maintenance Center
操作维护中心(OMC) operation and maintenance centre
操作维护链路 Operation and Maintenance LinkCentre
操作维护台 Operation and Maintenance Station
运行系统 operation system
操作系统功能 Operation System Function
运行系统功能块 operation system function block
操作、管理和维护 Operation,Administration and Maintenance
运行、管理和维护中心 operation,administration and maintenance centre
操作、维护和管理部分 Operation,Maintenance and Administration Part
操作系统功能或协调功能 Operations System Function or Mediation Function
操作系统或协调装置 Operations Systme or Mediation Device
运营者决定的闭锁业务 Operator Determined Barring
操作员确定闭锁 Operator Determined Brring
运营者特定业务 Operator Specific Service
运营者融合组 Operators Harmonization Group
驱动多接入机会 Opportunity Driven Multiple Access
光接入网 optical access network
光分插复用器 Optical Add Drop Multiplexer
光分插复用 Optical Add/Drop Multiplexer
光放段 Optical Amplifier Span
光学条码识读 optical bar recognition
条码识读 Optical Bar Recognization
光功率放大器 Optical Boosting Amplifier
光分路器 optical branching device,splitter
光通路 Optical Channel
光学字符识读 optical character recognition
光学字符识读与视频补码联机 Optical Character Recognization/Video Coding System
光交叉连接 Optical cross-Connect
光交叉 Optical Cross—connector
光解复用器 Optical Demultiplexer
光纤分配架 Optical Distribution Frame
光配线网 optical distribution network
光域业务互连 Optical Domain Service Interconnect