What tone is used when a dispatcher needs to communicate critical safety information?

When a dispatcher needs to communicate critical safety information, the appropriate tone is the Alert Tone. This tone is specifically designed to grab the attention of the personnel receiving the message, signaling that the information being conveyed is urgent and requires immediate attention.

The Alert Tone serves as an auditory cue that indicates the seriousness of the situation and prompts the receiver to prepare for essential instructions or actions. By utilizing a distinct tone that stands out from regular communications, the dispatcher ensures that vital safety information is not overlooked or misinterpreted. In emergency situations, clarity and urgency in messaging are crucial for maintaining safety and facilitating quick responses.

The other tones listed do not serve this specific purpose; they may be used for different types of communications but lack the urgency that accompanies the Alert Tone when critical safety information is involved.