A data communications system is disclosed for a vehicle having an exterior surface and an interior space, the data communications system including a support frame positionable within the interior space of the vehicle. A case is movable between an open and a closed position and includes a mounting system, the case mountable to the exterior surface of the vehicle via the mounting system. The system includes a power supply and a router device communicated with the power supply, one or more of the power supply and the router device mounted to the support frame. An antenna array is mounted within the case, the antenna array communicated with the router device, the antenna array including at least two cellular antennas.