Rio Grande Valley 9-1-1
9-1-1 Terminology
Commonly used terms and acronyms in the emergency communications industry.
PSAP
Public Safety Answering Point
The physical location where 9-1-1 calls are answered and dispatched.
CAD
Computer-Aided Dispatch
The software system used by dispatchers to manage emergency calls and tracking field units.
ANI/ALI
Automatic Number Identification / Automatic Location Identification
The caller's phone number and location information displayed to the call-taker.
NG9-1-1
Next Generation 9-1-1
A secure, IP-based system that allows for data-rich 9-1-1 communications.
MSAG
Master Street Address Guide
A database of street names and address ranges used to route 9-1-1 calls correctly.
ESN
Emergency Service Number
A code that identifies the specific police, fire, and EMS agencies responsible for an area.