Automatic Number Identification (ANI) is the telephone number information of a 911 caller.

Automatic Number Identification (ANI) is the telephone number information of a 911 caller.

• A. A mapping system.
• B. A dial tone service.
• C. Location information of a 911 caller.
• D. Telephone number information of a 911 caller.

Answer: (D)

ANI is the telephone number information of the 911 caller—the number from which the call originates. This number is automatically transmitted by the phone network to the PSAP, allowing responders to identify who is calling, perform call-back if needed, and link the call to the right records. It’s separate from location data, which is about where the caller is (that’s ALI). It isn’t a mapping system and it isn’t a dial tone service. So the description that matches ANI is that it is the telephone number information of a 911 caller.

ANI is the telephone number information of the 911 caller—the number from which the call originates. This number is automatically transmitted by the phone network to the PSAP, allowing responders to identify who is calling, perform call-back if needed, and link the call to the right records. It’s separate from location data, which is about where the caller is (that’s ALI). It isn’t a mapping system and it isn’t a dial tone service. So the description that matches ANI is that it is the telephone number information of a 911 caller.