| 1. | Frame structure for synchronous digital hierarchy signal
同步数字体系信号的帧结构 |
| 2. | Synchronous digital hierarchy bit rates
同步数字体系的比特率 |
| 3. | Basic multiplexing structure for synchronous digital hierarchy signals
同步数字体系信号的基本复用结构 |
| 4. | Specifications for synchronous digital hierarchy multiplex equipment
同步数字体系sdh复用设备技术要求 |
| 5. | Pdh plesiochronous digital hierarchy
准同步数字体系 |
| 6. | Sdh management sub - network
同步数字体系管理子网 |
| 7. | Synchronous digital hierarchy
同步数字体系 |
| 8. | Sdh management network
同步数字体系管理网 |
| 9. | Methods of measurement for synchronous digital hierarchy optical fiber cable line systems
同步数字体系sdh光缆线路系统测试方法 |
| 10. | Sdh technical specifications of sdh transmission interface for broadcasting and television optical backbone network
广播电视光缆干线同步数字体系 |
