| Front Port | Description | Patched to | Rear Port |
|---|---|---|---|
| Port 01/02 | Patchpanel B-Br-Keller/MM/?? / Port 01/02 | Rear / 1 | |
| Port 03/04 | Rear / 2 | ||
| Port 05/06 | Patchpanel B-Br-Keller/MM/A-Br-Keller / Port 03/04 | Rear / 3 | |
| Port 07/08 | Rear / 4 | ||
| Port 09/10 | (circuit) Termination A: Block B | Rear / 5 | |
| Port 11/12 | Patchpanel B-Br-Keller/MM/A-Br-Keller / Port 01/02 | Rear / 6 | |
| Port 13/14 | Rear / 7 | ||
| Port 15/16 | Rear / 8 | ||
| Port 17/18 | Rear / 9 | ||
| Port 19/20 | Rear / 10 | ||
| Port 21/22 | Rear / 11 | ||
| Port 23/24 | Rear / 12 |
| Rear Port | Description | Patched to |
|---|---|---|
| Rear |