Shielded BNC cables are routed through a filter box/transformer. The supplied BNC connectors will need to be mounted within your penetration panel, this will require two 11mm holes for this purpose, the supplied RF filters will be connected on the MR side with 9 meters of cabling to connect to the headphones. Typically cables run from the penetration panel located between the control room and scan room, however extending the BNC cabling may also be possible to route it from the equipment room.