How does the 9-1-1 call taker know my address?

9-1-1 call taker computers are equipped with an Automatic Number Identification (ANI) / Automatic Location Identification (ALI) screen. Calls generated from a traditional landline phone will relay the callers telephone number along with the address the service is associated with. Most cell phone callers display latitude/longitude coordinates that a 9-1-1 call taker can view on a map to determine the location of the caller. The call taker will still ask you your address just to make sure it matches what is on the screen. The location of an emergency is critically important information that is used to get first responders to you quickly. The location can be a street address, cross streets, landmark, or a mile marker on a highway.

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1. What is 9-1-1?
2. When should I call 9-1-1?
3. What should I do if I call 9-1-1 by accident?
4. How does the 9-1-1 call taker know my address?
5. Why does the 9-1-1 call taker ask me all those questions?
6. How is 9-1-1 funded?
7. How do I register to receive emergency notifications from Peak Alerts?