What does "10-7" signify in radio communication?

In radio communication, the term "10-7" signifies that the unit or individual is "Out of service." This phrase is part of a coded language known as ten-codes or ten signals, which are used to convey specific messages concisely and quickly over the radio, reducing misunderstandings and saving time. When an operator indicates "10-7," they are notifying others that they are unavailable for communication or operational duties at that moment. This is crucial for managing communication within a team, ensuring others understand that they should not expect further involvement from that unit until they are available again.

Understanding such codes improves clarity and facilitates efficient communication in various operational contexts, particularly in emergency services or any scenario where clear and rapid exchanges of information are essential.