The public address system is an important passenger service system at the airport. It operates automatically under the background of unified dynamic flight information, and real-timely responds to dynamic information and broadcast it to passengers and staff, thus offering an automated tool for safe and efficient operation of the airport, and raising the quality of passenger service.

　　The public address system can achieve full-automatic flight announcement and man-controlled half-automatic announcement. Besides, it can broadcast flight information with various languages.

　　Broadcasting software broadcasts flight information according to flight status trigger and allows operators to type in necessary information like flight number and time. It can integrate the broadcast content and broadcast it in an orderly manner, thus achieving automatic broadcasting.