A system and method for managing mobile communications is disclosed. The system and method can determine which of several systems associated with a motor vehicle is permitted to communicate with a user interface in the motor vehicle. The user interface is used to assist in facilitating communications between a user and one of the communications systems. The user interface can include a display and be connected to at least one loudspeaker. The various systems associated with the vehicle communicate with one another and determine which system can communicate with the user interface.