| 缩写 | 全称 | 中文释义 |
|---|---|---|
| WACP | Wide Area Calling Plan | 广域呼叫计划 |
| 3GSM | Third-generation Global System for Mobile (communications) | 第三代全球移动通信系统 |
| PLT | Power Line Telecommunications | 电力线通信 |
| LVM | Line Verification Module | 线路验证模块 |
| ASU | Arbitrary Strength Unit | 任意强度单位 |
| DCH | Discrete CHannel | 离散信道 |
| SS5 | Signalling System 5 (2400/2600 Hz tones) | 信号系统5(2400/2600赫兹音调) |
| EUCL | End User Common Line | 终端用户公用线 |
| ISBX | Internet Satellite Broadcast Exchange | 互联网卫星广播交换 |
| SLC | Subscriber Line Concentrator | 用户线路集中器 |