911 is a three-digit telephone number that you can call 24 hours a day for police, fire or emergency medical services. 911 saves valuable time in an emergency because you only have to remember three digits (9-1-1).
The 911 emergency telephone system was developed for the United States in 1967 as a way for the public to quickly communicate a call for emergency assistance. The system has been upgraded many times over the years.
Enhanced 911 (E-911) systems automatically forward emergency calls made to the telephone number 911 to a communications center that will dispatch help. E-911 computer software and special telephone lines link the telephone company to the communications center. The telephone company maintains a database of information with the name, address and special notations about the people registered as the residents at each phone number location. This information is automatically displayed to the personnel at the communications center on a computer monitor when a 911 call comes in. The names of the appropriate emergency response agencies (law enforcement, fire, and emergency medical services) are also shown.
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