其他 -一些缩略语 [4]
| L2F | 第二层转发 | |
| L2TP | 第二层隧道协议 | |
| LAN | 局域网 | Local Area Network |
| LANE | 局域网仿真 | LAN Emulation |
| LAP | 链路访问过程 | Link Access Procedure |
| LCP | 链路控制协议 | Link Control Protocol |
| LE_ARP | LAN仿真地址转换协议 | |
| LEC | 局域网仿真客户端 | LAN Emulation Client |
| LECS | 局域网仿真配置服务 | LAN Emulation Configure Service |
| LED | 发光二极管 | |
| LES | 局域网仿真服务器 | LAN Emulation Server |
| LF | Line Feed | |
| LI | 长度指示 | |
| LIM | 插件板 | |
| LLC | 逻辑链路控制 | Logical Link Control |
| MAC | 介质访问控制 | Media Access Control |
| MAN | 城域网 | Metropolitan Area Network |
| MACA | 避免冲突的多路访问(协议) (IEEE802.11无线局域网标准的基础) |
Multiple Access with Access Avoidance |
| MAU | Medium Access Unit | |
| MIB | 管理信息库 | Management Information Base |
| MIC | Media interface connector | |
| Modem | 调制解调器 | |
| MOTD | 当日消息 | Message Of The Day |
| MPC | MPOA Client | |
| MPEG | 活动图像专家组 | Motion Picture Experts Group |
| MRFCS | 多速率快速电路交换 | Multirate Fast Circuit Switching |
| MPOA | Multi-Protocol Over ATM | |
| MPS | MPOA Server | |
| MRCS | 多速率电路交换 | Multirate Circuit Switching |
| MSC | 移动交换中心 | Mobile Switching Center |
| MTBF | 两次故障间的平均时间 | Media Time Between Faults |
| MTOR | 故障修复所需平均时间 | Media Time of Repair |
| MTP | 邮件传输协议 | Mail Transfer Protocol |
| MTSO | 移动电话交换站 | Mobile Telephone Switching Office |
| MTTD | 故障诊断所需平均时间 | Media Time to Diagnose |
| MTU | 最大传输单元 | Maximum Transfer Unit |