| HDSL | High speed DSL | 高级数字用户线 |
| HDSL | High-bit-rate Digital Subsriber Line | 高速用户数位回路 |
| HDSL | High-data-rate Digital Subscriber Line | 高数据速率数字用户线 |
| HDSL | High (Data Rate) Subscriber Line | 高（数据速率）用户线 |
| HDSL | High-bit rate Digital Subscriber Loop | 高比特率数字用户环路 |
| HDSL | High-bit-rate Digital Subscriber Line | 高比特率数字用户线 |
| HDSL | High-level Data Specification Language | 高级数据规范语言 |
| HDSL | High (bit rate) Digital Subscriber Line | 高（比特率）数字用户线 |