| 1. | Technical condition for pdh optical line terminals used in access neteork
接人网用pdh光端机技术条件 |
| 2. | Pdh pseudo - synchronous digital hierarchy
准同步数字系列 |
| 3. | Pdh pseudo synchronous digital hierarchy
准同步数字序列 |
| 4. | Code for construction of railway optical fiber cable pdh communication project
铁路光缆pdh通信工程施工规范 |
| 5. | Pdh microwave point - to - point communication
B模拟微波 |
| 6. | Pdh plesiochronous digital hierarchy
准同步数字体系 |
| 7. | Pdh : plesiochronous digital hierarchy
准同步数字系列 |
| 8. | Electric tributary pdh etp1s
电支路插槽 |
| 9. | Pdh pulse code modulation
脉码调制 |
| 10. | Some clock synchronizing resource of scc used in sdh and pdh is researched
3 、研究了scc在pdh和sdh中使用的多种时钟同步策略。 |
