E911

E911 is “a more advanced version of the traditional 911 system, which merely routes an emergency call to the local PSAP, because it provides additional information about the caller: E911 systems route 911 calls through the use of a Selective Router to a geographically appropriate PSAP based on the caller's location. E911 also provides the call taker with the caller's call back number, referred to as Automatic Numbering Information (ANI), and, in many cases, location information &mdash; a capability referred to as Automatic Location Identification (ALI).”