What communication does "10-21" signify?

The communication code "10-21" signifies a request for a phone call or to provide a phone number. This code is part of the ten-codes or ten signals used in law enforcement communications to facilitate clear and concise exchanges between officers and dispatchers. This shorthand can enhance efficiency and ensure that vital information is relayed quickly without miscommunication.

The use of specific code numbers, such as "10-21," allows for standardized communication that is understood by all personnel in the field, streamlining operations, especially during high-pressure situations. Knowing these codes is essential for any officer as they navigate their daily responsibilities, ensuring they can promptly relay or respond to inquiries regarding phone communications.