Which En Route Sector team position may not accept handoffs via landline communications?

The Flight Data position typically involves responsibilities related to collecting, processing, and disseminating flight data information rather than handling live air traffic. This position primarily focuses on the planning aspect, such as filing flight plans and ensuring that all necessary information is available for the controllers who are managing aircraft in the airspace. Since Flight Data is not directly involved in real-time traffic control or managing aircraft movements, it does not accept handoffs via landline communications. This task is largely handled by positions that are actively controlling air traffic, such as Radar Controller or Local Control, both of which engage in direct communication with pilots and other controllers using landlines. Ground Control is also actively managing aircraft movements on the ground, allowing for multiple forms of communication, including landlines. Thus, it is clear that the nature of the Flight Data position excludes it from receiving handoffs using this type of communication method.