AACN (Advanced Automatic Collision Notification)
An emergency call placed by a vehicle, initiated either automatically or manually, conveying telematics data. "Advanced” indicates that the call carries advanced telematics data such as information about a crash, rollover, fire, or other incident, the vehicle description and location, etc.
Also known as:
ACN (Automatic Collision Notification)
The same as AACN but without the advanced aspects.
NG-AACN (Next-Generation AACN)
An AACN call using NG9-1-1 and conveying the data in the call set-up, so the call can be identified as an AACN during routing and call handling, and the data may be available to call handling equipment and a call taker immediately.
Relevant NENA Documents