| Type of transition | coupler |
| Structure | both sides |
| Symbol | Manufacturer | Structure | Type | Pin configuration | Connector |
|---|---|---|---|---|---|
| TEL-0008-6/6 | NINIGI | RJ12 socket | - | 6p6c | - |
| AT-A8/8 | DIGITUS | RJ45 socket | unshielded | 8p8c | coupler |
| AT-AG8/8 | DIGITUS | RJ45 socket | shielded | 8p8c | coupler |