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Indiana Enhanced 911

911 Coverage > Phase 1 & 2 Phase 1 & 2

What is Phase 1 coverage?

Wireless Phase I coverage is available to cell phone users in areas where wireless carriers and local 911 centers have invested in technology enhancements to protect wireless callers in emergencies. Where Phase I coverage is available, the 911 dispatcher will see the wireless telephone’s call back number and the location of the cell tower that is closest to the caller.

While this enhanced technology makes it possible for dispatchers to return the call if the wireless signal is lost or interrupted, it provides almost no information about the caller’s location. A single cell tower, particularly in a rural area, may serve more than 100 square miles of a carrier’s service area, doing little to help locate a caller in an emergency.

 

What is Phase 2 coverage?

Wireless Phase II coverage is available to cell phone users in areas where wireless carriers and local 911 centers have invested in technology enhancements to protect wireless callers in emergencies. Where Phase II coverage is available, the 911 dispatcher will see the wireless telephone’s call back number and the location of the caller by latitude and longitude within a few hundred feet. This enhanced location technology is mandated by the Federal Communications Commission, and wireless companies are working to implement Phase II coverage gradually.