Code 70
Medical assistance is required.
Code 80
Fire brigade required.
Code 90
The suspect is in custody.
Affirmative
Yes or message understood.
Negative
No or unable to comply.
ETA
Estimated time of arrival.
Unit responding
Officers are on their way to the scene.
Backup requested
Additional assistance is needed at the scene.
All units
Alerting all available officers to a situation.
Priority call
An emergency situation requiring immediate response.