The ICAO has standardized the ringtone used in ATC communication, ensuring that it is consistent across different countries and regions. The standard ringtone is a repeating pattern of two tones, with a frequency of 2280 Hz and 2600 Hz. This standardized ringtone is used globally, allowing pilots to recognize incoming messages from ATC regardless of their location.
The ICAO has standardized the ringtone used in ATC communication, ensuring that it is consistent across different countries and regions. The standard ringtone is a repeating pattern of two tones, with a frequency of 2280 Hz and 2600 Hz. This standardized ringtone is used globally, allowing pilots to recognize incoming messages from ATC regardless of their location.