ExteNet Systems Inc., a wireless business, has sued the New York Department of Transportation and a Crown Castle subsidiary in Manhattan federal court, claiming the state agency discriminated by dragging its feet on approving rights of way for new wireless antennas. ExteNet Systems Inc. wants an "expedited review" of its application for use of public land for the mobile infrastructure, contending last Monday that NYSDOT has sat on its requests for roughly five months. Crown New York was also named because it has a state contract to manage telecom facilities on public rights of way, according to the suit.