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Objectives Upon completion of this section you should be able to: • Explain the history and development of the 911 System • Describe how 911 works • List the benefits of 911 • Identify

Worldwide Training

911 & E911: Standard

Telephony

Introduction to 911 & E911

This document explores the development of 911, how 911 works, and the benefits of

911

Objectives

Upon completion of this section you should be able to:

• Explain the history and development of the 911 System

• Describe how 911 works

• List the benefits of 911

• Identify references to standards, current news, and glossary of terms

The Development of 911

http://www.nena9-1-1.org/History%20of%20NENA%20and%20911/history4.htm

The three-digit telephone number "9-1-1" has been designated as the

"Universal Emergency Number," for citizens throughout the United States to request emergency assistance It is intended as a nationwide telephone number and gives the public fast and easy access to a Public Safety Answering Point (PSAP)

Single Emergency Number Recommended

In the United States, the first catalyst for a nationwide emergency telephone number was in 1957, when the National Association of Fire Chiefs

recommended use of a single number for reporting fires

In 1967, the President's Commission on Law Enforcement and Administration

of Justice recommended that a "single number should be established"

nationwide for reporting emergency situations The use of different telephone numbers for each type of emergency was determined to be contrary to the purpose of a single, universal number Other Federal Government Agencies and various governmental officials also supported and encouraged the recommendation As a result of the immense interest in this issue, the President's Commission on Civil Disorders turned to the Federal Communications Commission (FCC) for a solution

9-1-1 Established by AT&T

In November 1967, the FCC met with the American Telephone and Telegraph Company (AT&T) to find a means of establishing a universal emergency number that could be implemented quickly In 1968, AT&T announced that it would establish the digits 9-1-1 (nine-one-one) as the emergency code throughout the United States

The code 9-1-1 was chosen because it best fit the needs of all parties involved First, and most important, it meets public requirements because it is brief, easily remembered, and can be dialed quickly Second, because it is a unique number, never having been authorized as an office code, area code, or service code, it best meets the long range numbering plans and switching

configurations of the telephone industry

9-1-1 Confirmed by Congress

Congress backed AT&T's proposal and passed legislation allowing use of only the numbers 9-1-1 when creating a single emergency calling service, thereby making 9-1-1 a standard emergency number nationwide A Bell System policy was established to absorb the cost of central office modifications and any additions necessary to accommodate the 9-1-1 code as part of the general rate base The Enhanced 9-1-1, or E9-1-1, subscriber is responsible for paying network trunking costs according to tariffed rates, and for purchasing answering equipment from the vendor of their choice

9-1-1 First Used

On February 16, 1968, Senator Rankin Fite completed the first 9-1-1 call made

in the United States in Haleyville, Alabama The serving telephone company was Alabama Telephone Company, which later became Contel Corp This 9-1-1 system is still in operation today On February 22, 1968, Nome, Alaska implemented 9-1-1 service

Nationwide Adoption of 9-1-1

In March 1973, the White House's Office of Telecommunications issued a national policy statement which recognized the benefits of 9-1-1, encouraged the nationwide adoption of 9-1-1, and provided for the establishment of a Federal Information Center to assist units of government in planning and implementation The intense interest in the concept of 9-1-1 can be attributed primarily to the recognition of characteristics of modern society, i.e., increased incidences of crimes, accidents, and medical emergencies, inadequacy of existing emergency reporting methods, and the continued growth and mobility

of the population

In the early 1970s, AT&T began the development of sophisticated features for the 9-1-1 with a pilot program in Alameda County, California The feature was

"selective call routing." This pilot program supported the theory behind the Executive Office of Telecommunication's Policy By the end of 1976, 9-1-1 was serving about 17% of the population of the United States In 1979, approximately 26% of the population of the United States had 9-1-1 service, and nine states had enacted 9-1-1 legislation At this time, 9-1-1 service was growing at the rate of 70 new systems per year By 1987, those figures had grown to indicate that 50% of the US population had access to 9-1-1 emergency service numbers

In addition, Canada recognized the advantages of a single emergency number and chose to adopt 9-1-1 rather than use a different means of emergency reporting service, thus unifying the concept and giving 9-1-1 international stature

As we approach the end of the 20th century, some type of 9-1-1 service covers nearly 93% of the population of the United States Ninety-five percent of that coverage is Enhanced 9-1-1 Approximately 50% of the geographic US is covered by some type

of 9-1-1

How 9-1-1 Works

http://www.nena9-1-1.org/History%20of%20NENA%20and%20911/history4 htm

Although every system is unique, a 9-1-1 system works primarily in the following way:

1 The three digit emergency number 9-1-1 is dialed

2 The call is answered at a Public Safety Answering Point (PSAP)

3 The trained telecommunicator at the PSAP receives the emergency information from the caller

4 The telecommunicator dispatches the appropriate agency (police, fire, EMS) to the emergency

If people dial 9-1-1 in an area not served with a 9-1-1 system, they should receive a telephone intercept that will notify them that they do not have 9-1-1 service and that they should hang up and dial the appropriate seven-digit emergency number, or dial

"0" for the operator There are urban/rural areas that use a fast busy signal instead of the intercept Some territories are 9-1-1 capable, but are not served by a 9-1-1 PSAP This is usually due to an emergency agency not wanting to participate in the system Instead, they use their own seven digit emergency number The PSAP, upon receipt of the call, will notify the appropriate agency of the call, even though they do not serve that emergency agency

The Benefits of 9-1-1

The major benefits of 9-1-1 to citizens and public safety agencies should be understood by those involved in the planning and implementation of 9-1-1 systems The means by which 9-1-1 provides this benefit is primarily by saving time in the overall response of a public safety agency

The total time required in response to a perceived emergency is the sum of:

• Time from citizen perception of an emergency situation to the time he or she reaches the correct public safety agency

• Time from receipt of a call by the agency to the time an emergency service vehicle is dispatched to the scene of the emergency

and

• Time from the dispatch of the vehicle to the time it arrives at the scene of the emergency

A 9-1-1 system can save valuable minutes in that initial period of time when reaching the appropriate emergency agency can mean life or death

A number of surveys have been conducted on the problems citizens have in reaching their public safety agencies These surveys showed that fewer than 50% of the citizens knew the telephone numbers of their own public safety agencies, and when citizens are traveling, very few would know the appropriate agencies, much less the

emergency telephone numbers of those agencies Citizens who did not know the correct emergency telephone number relied on telephone books or direct calls (dial

"0") to telephone company operators

Telephone operators have historically provided citizens with assistance through dial

"0" service However, these operators are not highly trained in emergency service requirements and they must search the telephone directories for the number to the correct agency An additional complication with the use of the telephone operator for emergencies is the gradual reduction of the number of operator centers, which has been caused by the automation of telephone switching centers An operator reached through dialing "0" in an emergency could be located more than 200 miles from the caller, and would therefore be ill-equipped to assist the citizen in selecting the correct agency

Average call delays for citizens not knowing the correct number ranged from 1.0 to 3.5 minutes, depending upon the agency type and the number of agencies contacted before the correct agency was reached A full 20% of the citizens surveyed had an average delay of 3.5 minutes because of failure to reach the correct agency on the first contact Additionally, 10% of these citizens needed assistance from more than one type of agency

These long delays in citizen access to public safety agencies are caused by citizen confusion about agency identification and the lack of easily located emergency number By using 9-1-1 as a universal emergency number, both of these problem areas will be eliminated The three-digit number is easily remembered, and trained answering personnel can quickly identify the correct agency and provide for the transfer of the emergency information to that agency

The benefits of reduced response times by emergency service agencies are quite clear

A study of the President's Commission on Law Enforcement showed a direct relationship between apprehension of criminals and low response time A reduction of

an average of only one-minute in fire response time could probably save millions of dollars annually in any state Finally, a reduction in response time for ambulance and rescue units will reduce the death rate in heart attack, injury accident, and other life and death medical emergencies An important but somewhat less visible benefit of 9-1-1 is the more efficient, more cost-effective use of scarce emergency service resources for the public benefit

References

q NEMA’s Telecom Standard & Training for your State

Go to http://www.nena9-1-1.org/nrc/telecomstd/newnrc.htm and click on your state

q Wireless E9-1-1, Current NEMA News Releases

Go to http://www.nena9-1-1.org/legislation/wireless_e911.htm

q Glossary of Terms [E911 & 911]

Go to http://www.telident.com/Glossary.html#Enhanced_911