| Subject | English | Japanese |
| comp. | n cell loopback test | セルループバック試験 |
| comp., MS | loopback address | ループバック アドレス (The address of the local computer used for routing outgoing packets back to the source computer. This address is used primarily for testing) |
| comp. | n loopback point | 折り返しポイント |
| comp. | n loopback test | 折返しテスト |
| comp. | n loopback test | 折返し試験 |
| comp. | n loopback test | ループバック試験 |