| 1. | Chcs channel carrier common supply 信道载波共用电源 |
| 2. | 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 |
| 3. | 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 |
| 4. | 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 |
| 5. | 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 |
| 6. | Grading standard for quality of carrier telephone equipment . open wire high band 12 channel carrier telephone equipment 载波电话设备质量分等标准.明线高12路载波电话设备 |
| 7. | Grading standard for quality of carrier telephone equipment . 24 - channel carrier telephone submarine coaxial cable equipment 载波电话设备质量分等标准. 24路海底同轴电缆载波电话设备 |
| 8. | Grading standard for quality of carrier telephone equipment . 120 - channel carrier telephone small core coaxial cable equipment 载波电话设备质量分等标准.小同轴电缆120路载波电话设备 |
| 9. | Grading standard for quality of carrier telephone equipment . 960 - channel carrier telephone small core coaxial cable equipment 载波电话设备质量分等标准.小同轴电缆960路载波电话设备 |
| 10. | Grading standard for quality of carrier telephone equipment . 300 - channel carrier telephone small core coaxial cable equipment 载波电话设备质量分等标准.小同轴电缆300路载波电话设备 |