| 缩写 | 全称 | 中文释义 |
|---|---|---|
| VG | Voice Grade | 话音级 |
| LAW | Local Area Wireless | 局域网无线 |
| AAR | Automatic Alternate Routing | 自动备用路由 |
| VDT | Video Dial Tone | 视频拨号音 |
| EPSCS | Enhanced Private Switch Controlled System | 增强型专用交换机控制系统 |
| COMPANDER | COMpressor/exPANDER | 压缩机/膨胀机 |
| SYN | Synchronization Character | 同步字符 |
| SSP | Service Switching Point | 业务切换点 |
| OOF | Out Of Frame | 帧外 |
| SVC | Switched Virtual Circuit | 交换虚拟电路 |