The OptiX OSN 7500 equipment consists of the cabinet, cabinet doors, DC power distribution unit (PDU), subracks, orderwire phone fixing frame, boards and cables. The OptiX OSN 7500 subrack can be installed in a 300 mm or 600 mm ETSI cabinet.

| 1. DC PDU | 2. Side panel | 3. Cable distribution plate | 4. Orderwire phone fixing frame |
| 5. Subrack | 6. Fiber management tray | 7. Front door | - |

| 1. Upper processing board area | 2. Lower processing board area | 3. Interface board area |
| 4. Fan area | 5. Cable routing area |

| 1. Upper processing board area | 2. Lower processing board area | 3. Interface board area |
| 4. Fan area | 5. Cable routing area | - |