What is a shoutline in air traffic control communication?

In air traffic control communication, a shoutline refers to a loudspeaker paging system that is active at positions receiving the call. This allows controllers to broadcast important messages quickly and effectively to various positions within the control facility. The function is particularly useful in situations where speed and clarity are needed, such as during busy traffic periods or emergencies.

This method facilitates immediate communication without relying solely on radio transmissions, enhancing the overall response time and coordination among air traffic control personnel. It ensures that critical information is disseminated promptly to all relevant parties, which is vital for maintaining safety and efficiency in airspace management.