| 1. | Distributed frame alignment signal 分散式帧定位信号 |
| 2. | Bunched frame alignment signal 集中式帧定位信号 |
| 3. | Frame alignment recovery time 帧定位恢复时间 |
| 4. | Out - of - frame alignment time 帧失位时间 |
| 5. | Frame alignment time slot 帧定位时隙 |
| 6. | Frame alignment signal 帧定位信号 |
| 7. | A set of consecutive digit time slots in which the position of each digit time slot can be identified by reference to a frame alignment signal 一组连续的数字时间片段,每一数字时间片段在组内的位置可参考帧同步信号来标识。 |