| 1. | Coaxial cable carrier telephone 同轴电缆载波电话 |
| 2. | Measurement for 24 - channels submarine coaxial cable carrier telephone equipment 24路海底同轴电缆载波电话设备测试方法 |
| 3. | Carrier telephone terminal 载波电话终端机 |
| 4. | Carrier telephone repeater 载波电话增音机 |
| 5. | Measurement methods for 120 - channel submarine coaxial cable carrier telephone equipment 120路海底同轴电缆载波电话设备测试方法 |
| 6. | Grading standard for quality of carrier telephone equipment . power line carrier telephone equipment 载波电话设备质量分等标准.电力线载波电话设备 |
| 7. | Grading standard for quality of carrier telephone equipment . 12 - channel carrier telephone over wire equipment 载波电话设备质量分等标准明线. 12路载波电话设备 |
| 8. | Grading standard for quality of carrier telephone equipment . 3 - channel carrier telephone over cable equipment 载波电话设备质量分等标准.明线电缆3路载波电话设备 |
| 9. | Grading standard for quality of carrier telephone equipment . 12 - channel carrier telephone underground cable equipment 载波电话设备质量分等标准.地缆12路载波电话设备 |
| 10. | Grading standard for quality of carrier telephone equipment . open wire high band 3 - channel carrier telephon equipment 载波电话设备质量分等标准.明线高频3路载波电话设备 |