| 缩写 | 全称 | 中文释义 |
|---|---|---|
| HN | Home Number | 家数 |
| LQR | Line Quality Report | 生产线质量报告 |
| SDCCH | Stand-alone Dedicated Control CHannel | 独立专用控制通道 |
| TEL & TEL | TELephone and TELegraph | 电话和电报 |
| SSN | Switched Service Network | 交换业务网 |
| PCIP | Provider Claims Intervention Program | 供应商索赔干预计划 |
| LUD | Look-Up Directory | 查找目录 |
| SLM | Subscriber Loop Multiplex | 用户环路复用 |
| LETS | Line Efficiency Tracking System | 线效率跟踪系统 |
| APS | Automatic Protection Switching | 自动保护开关 |