add port to switch on the roof

config/switch.nix

@@ -307,8 +307,8 @@
         up3.ports = [ "3" ];
         # unifiac-mesh
         ap57.ports = [ "10" ];
-        # dump-dvb traffic-stop-box
-        c3d2.ports = [ "20" ];
+        # TLMS tetra and traffic-stop-box
+        c3d2.ports = [ "19,20" ];
       };
     };