| 1. | Data terminal equipment data circuit terminating equipment 数据终端设备数据电路终端设备 |
| 2. | Data circuit - terminating equipment dce 数据电路终接设备 |
| 3. | Data circuit - terminating equipment 数据电路终接设备 |
| 4. | Data circuit transparency 数据电路透明性 |
| 5. | Data circuit equipment dce 数据电路设备 |
| 6. | Transmitted - data circuit 传输数据线路 |
| 7. | Data circuit equipment 数据电路设备 |
| 8. | Tandem data circuit 汇接数据电路 |
| 9. | Dce data transmission ; interface between data circuit - terminating equipment and data terminal equipment 数据传输.数据电路端接设备 |
| 10. | Medium speed interface for data terminal equipment and data circuit terminating equipment 数据终端设备和数据电路终接设备的中速接口 |