Related terms:
public safety answering point
ali database
emergency responders
rules require
interconnected voip
voip service providers
voip service
wireless carriers
emergency telephone number
psap
location information
emergency telephone
esn
telephone operator
calling party
emergency number
local telephone
case of emergency
emergency calls
private branch exchange
emergency service
local exchange carrier
answering
rotary dial
geolocation
telephone system
cellular phone
wireline
national emergency
Wikipedia sources:
9-1-1
Enhanced 9-1-1
Context for words:
national
emergency
number
association
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