| 序号 | 中 文 | 英 文 | 术语解释 | 缩写 | 来源 |
| 161 | 光配线网 | Optical Distribution Network | ODN | YD/T 1250-2003 | |
| 162 | 光线路终端 | Optical Line Termination | OLT | YD/T 1250-2003 | |
| 163 | 光网络单元 | Optical Network Unit | ONU | YD/T 1250-2003 | |
| 164 | 发端CAMEL签约信息 | Originating CAMEL Subscripting Information | O－CSI | YD/T 1252-2003 | |
| 165 | 单向功能算法 | One-way function ALGorithm | O-ALG | YD/T 1261-2003 | |
| 166 | 发端BCSM | Originating BCSM | O-BCSM | YD/T 1261-2003 | |
| 167 | 始发CAMEL签约信息 | Originating CAMEL Subscription Information | O-CSI | YD/T 1261-2003 | |
| 168 | 开放业务接入 | Open Service Access | OSA | YD/T 1262-2003 | |
| 169 | 光放大发射机 | Optical Amplified Transmitter | OAT | YD/T 1259-2003 | |
| 170 | 光复用段 | Optical Multiplex Section | OMS | YD/T 1259-2003 | |
| 171 | 光监控信道 | Optical Supervisory Channel | OSC | YD/T 1259-2003 | |
| 172 | 光传送网络 | Optical Transport Network | OTN | YD/T 1259-2003 | |
| 173 | 光传送段 | Optical Transmission Section | OTS | YD/T 1259-2003 | |
| 174 | 起始信令点编码 | Original Point Code | OPC | YD/T 1263-2003 | |
| 175 | 打开逻辑通道 | Open Logical Channel | OLC | YD/T 1264-2003 | |
| 176 | 打开逻辑通道确认 | Open Logical Channel Acknowledge | OLCA | YD/T 1264-2003 | |
| 177 | 打开逻辑通道拒绝 | Open Logical Channel Reject | OLCR | YD/T 1264-2003 | |
| 178 | 开放式最短路径优先协议 | Open Shortest Path Firest Protocol | OSPF | YD/T 1265-2003 | |
| 179 | Operations Administration Maintenance & Provisioning | OAM&P | YD/T 1266-2003 | ||
| 180 | 光放大器 | Optical Amplifier | OA | YD/T 1273-2003 |