| 1. | Sdsl single - line digital subscriber line , single - line dsl
单绞线数字用户系统,对称数字用户回路 |
| 2. | Atu - c adsl transceiver unit central
非对称数位用户回路局端终止单元 |
| 3. | Atu - r adsl transceiver unit remote
非对称数位用户回路远端终止单元 |
| 4. | Optical communication system , subscriber loop
用户回路光通讯系统 |
| 5. | Optical communication system subscriber loop
用户回路光通讯系统 |
| 6. | Asymmetric digital subscriber line adsl asymmetrical digital subscriber line
非对称数位用户回路 |
| 7. | High data rate digital subscriber line hdsl
高速数字用户回路 |
| 8. | Asymmetric digital subscriber line
非对称式数字用户回路 |
| 9. | High - bit - rate digital subscriber line
高速数字用户回路 |
| 10. | Asymmetric digital subscriber line
非对称数字用户回路 |
