In the context of voice signalling, how should a higher priority message be communicated?

Using "EMERGENCY" or "CONTROL" to interrupt a conversation is the standard method for communicating a higher priority message in voice signalling. This approach is crucial in aviation and other fields where timely and clear communication can have significant implications for safety and coordination. When a situation is urgent or requires immediate attention, designating the message as "EMERGENCY" or "CONTROL" effectively communicates the level of urgency to all parties involved.

This method not only garners immediate attention but also helps ensure that other communications are briefly paused to prioritize the critical needs of the situation. In fast-paced environments, such as aviation communication, this kind of clarity and authority is essential for effective decision-making and response.