| Front Port | Description | Patched to | Rear Port |
| duplex-port-1 | | B-Br-Keller/SM/A-Br-Keller / Port 1/2 | Rear / 1 |
| duplex-port-2 | | b-switch-10 / 51 | Rear / 2 |
| duplex-port-3 | | B-Br-Keller/SM/Fahrradwerkstatt-Br / duplex-port-1 | Rear / 3 |
| duplex-port-4 | | (circuit) B-Br-Keller StuWe 1 | Rear / 4 |
| duplex-port-5 | | B-Br-Keller/SM/A-Br-Keller / Port 3/4 | Rear / 5 |
| duplex-port-6 | | | Rear / 6 |
| duplex-port-7 | | | Rear / 7 |
| duplex-port-8 | | | Rear / 8 |
| duplex-port-9 | | | Rear / 9 |
| duplex-port-10 | | | Rear / 10 |
| duplex-port-11 | | | Rear / 11 |
| duplex-port-12 | Reserviert für Uplink Bergfestgelände | | Rear / 12 |