| 缩写 | 全称 | 中文释义 |
|---|---|---|
| SWF-DS1 | SWitched Fractional Digital Signal 1 line | 切换分数数字信号1线 |
| GS | Ground Start | 地面起动 |
| AAL | ATM (Asynchronous Transmission Mode) Adaptive Layer | ATM（异步传输模式）自适应层 |
| ZBTSI | Zero Byte Time Slot Interchange | 零字节时隙交换 |
| SMDF | Subscriber Maintenance Distributing Frame | 用户维护配线架 |
| AFSK | Audio Frequency Shift Keying | 音频频移键控 |
| AFPS | Automatic Facility Protection Switching | 自动设施保护切换 |
| MAPDU | Management Application Protocol Data Unit | 管理应用协议数据单元 |
| INA | Information Network Architecture | 信息网络体系结构 |
| EMS | Element Management System | 要素管理系统 |