| Front Port | Description | Patched to | Rear Port |
|---|---|---|---|
| Port 1/2 | B-Br-Keller/SM/M-Br / duplex-port-1 | Rear / 1 | |
| Port 3/4 | B-Br-Keller/SM/M-Br / duplex-port-5 | Rear / 2 | |
| Port 5/6 | Rear / 3 | ||
| Port 7/8 | Rear / 4 | ||
| Port 9/10 | Rear / 5 | ||
| Port 11/12 | Rear / 6 |
| Rear Port | Description | Patched to |
|---|---|---|
| Rear | A-Br-Keller/SM/B-Br-Keller / Rear |