What does "OVER" indicate in voice communication?

The term "OVER" in voice communication indicates that a message is complete and the sender is awaiting a response from the recipient. It signifies that the speaker has finished their transmission and is expecting the other party to reply. This is particularly important in aviation communication where clarity and acknowledgment are crucial for safety and coordination.

Using "OVER" helps to eliminate any ambiguity regarding the status of communication, allowing both parties to manage their exchanges effectively. This ensures that information flows smoothly and helps maintain operational efficiency. In contrast, the other options might relate to different aspects of communication but do not define the specific function of "OVER" in this context. For example, a complete message with no response needed would typically end with "OUT," indicating that the conversation has concluded without expectation for a reply.