Additional Data

Data that further describe the nature of how the call was placed, the person(s) associated with the device placing the call, or the location the call was placed from. There are three types of Additional Data: Additional Data for the Call, Additional Data for the Caller and Additional Data for the Location.

NENA/APCO-INF-005.1
EIDD Information Document

NENA Standard for NG9-1-1 Additional Data