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- 1876
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- Alexander Graham Bell invents the telephone,
for which he receives two patents. With two financial backers founds the
company that becomes AT&T.
- 1877
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- The Bell Telephone Company, the first predecessor company to AT&T, is
formed and issues stock to the seven original shareowners.
- 1878
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- The first telephone exchange in the United States opens in New Haven, CT
under license from Bell Telephone. Within a few years, licensed telephone
exchanges open in every major city in the country. These franchises, together
with the parent company, eventually become known as the Bell System.
- 1882
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- The American Bell Telephone Company acquires a majority interest in the
Western Electric Company, securing a supplier for telephone equipment.
- 1885
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- The American Telephone and Telegraph Company is formed as a subsidiary of
then-parent American Bell Telephone Company, with a charter to build and
operate the original long distance network. By the end of the year, AT&T
completes its first line, between New York and Philadelphia. The initial
capacity of the line was one call.
- 1892
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- AT&T reaches its initial goal, opening a long distance line connecting
New York and Chicago. The circuit could handle only one call at a time. The
price was $9 for the first five minutes.
- 1894
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- Alexander Graham Bell's second telephone patent expires, opening the
telephone industry to competition. Within a decade, over 6,000 companies went
into the telephone business in localities across the country.
- 1899
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- Michael Pupin of Columbia University and George Campbell of AT&T
independently develop the theory of loading coils. With loading coils, which
reduce the rate at which a traveling telephone signal weakens, it becomes
possible to build longer telephone lines.
-
- In a corporate reorganization, American Telephone and Telegraph acquires
the assets of its parent, American Bell Telephone, and becomes the parent of
the Bell System.
- 1907
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- Theodore Vail begins his second term as President of AT&T (he had been
president in 1885-1887) He develops the philosophy, strategy, and structure
that guides AT&T and the Bell System for the next seventy years.
- 1908
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- Vail begins national advertising, and introduces the slogan "One
System, One Policy, Universal Service."
- 1913
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- AT&T settles its first federal anti-trust suit with a document known as
the Kingsbury Commitment. It establishes AT&T as a government sanctioned
monopoly. In return, AT&T agrees to divest the controlling interest it had
acquired in the Western Union telegraph company, and to allow non-competing
independent telephone companies to interconnect with the AT&T long distance
network.
- 1915
-
- Using the first practical electrical amplifiers, developed by AT&T's
Harold Arnold, AT&T opens the first transcontinental telephone line. The
new line connects the network that AT&T had been building out in every
direction from New York since 1885 with a separate network that had been
constructed by AT&T's Pacific Telephone subsidiary on the West Coast. In
effect, it connects telephones throughout the continental United States. The
ceremonial first call on Jan. 25 has four locations: New York City, San
Francisco, the White House in Washington, D.C., and Jekyll Island, Ga., where
AT&T President Theodore Vail is at the time. Service is available to all
telephone customers, but at an initial price of $20.70 for the first three
minutes between New York and San Francisco, volume is low.
- 1919
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- AT&T installs the first dial telephones in the Bell System, in Norfolk
VA. The last manual telephones in the system were not converted to dial until
1978.
- 1922
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- AT&T opens WEAF, the first commercial radio station in New York.
AT&T left radio broadcasting in 1926, retaining the networking facilities
used to send programs to stations across the country.
- 1925
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- AT&T establishes Bell Telephone Laboratories Inc. as its research and
development subsidiary.
- 1927
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- AT&T begins transatlantic telephone service, initially between the US
and London. The conversations crossed the Atlantic via radio. The initial
capacity is 1 call at a time, at a cost of $75 for the first three
minutes.
-
- AT&T presents the first demonstration of television in the United
States. Secretary of Commerce Herbert Hoover's live moving image was
transmitted over cable to New York, where it was seen by AT&T President
Walter Gifford, and a large audience.
- 1934
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- AT&T inaugurates transpacific telephone service, initially between the
US and Japan. Calls travel across the Pacific via radio. The initial capacity
is one call at a time at a cost of $39 for the first three minutes.
- 1937
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- Clinton Davisson of Bell Telephone Laboratories wins the Nobel Prize in
Physics for experimental confirmation of the wave nature of the electron. He
becomes the first of seven Nobel Prize winners produced by AT&T.
- 1941
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- The first non-experimental installation of coaxial cable in the network is
placed in service between Minneapolis, Minn., and Stevens Point, Wis. The type
of coaxial cable installed was invented at AT&T in 1929 and is the first
broadband transmission medium.
- 1946
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- AT&T begins offering mobile telephone service. With a single antenna
serving a region, no more than 12 to 20 simultaneous calls could be made in an
entire metropolitan area.
- 1947
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- AT&T develops the concept of cellular telephony. The technology to
realize the concept did not yet exist.
-
- AT&T Bell Telephone Laboratories scientists John Bardeen, Walter
Brattain, and William Shockley invent the
transistor, the first solid state amplifier or switch, and lay the
foundation for modern electronics. The three shared the Nobel Prize in Physics
in 1956 for the achievement.
- 1948
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- AT&T begins offering networking services for television on facilities
connecting major cities in the northeast and midwest. The service reaches the
west coast in 1951. Television networks use this service to transmit
programming to their affiliated stations around the country.
- 1951
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- AT&T introduces customer-dialing of long distance calls, initially in
Englewood, NJ. The national rollout takes place over the second half of the
1950s. Until this innovation, all long distance calls required operator
assistance.
- 1956
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- AT&T and the US Justice department agree on a consent decree to end an
antitrust suit brought against AT&T in 1949. AT&T restricts its
activities to those related to running the national telephone system, and
special projects for the federal government.
-
- AT&T opens for service TAT-1, the first trans-Atlantic telephone cable.
The initial capacity is 36 calls at a time at a price per call of $12 for the
first three minutes. Since trans-Atlantic service opened in 1927, calls had
traveled across the ocean via radio waves. But cables provide much higher
signal quality, avoid atmospheric interference and offer greater capacity and
security.
- 1958
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- AT&T introduces the first commercial modem.
- 1962
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- AT&T launches Telstar I, the first
active communications satellite. Telstar transmits the first live television
across the Atlantic.
- 1963
-
- AT&T introduces touchtone service, with a
keypad replacing the familiar telephone dial, initially in Greensburg and
Carnegie, Pennsylvania.
- 1964
-
- AT&T opens TPC-1, the first submarine telephone cable across the
Pacific. It went from Japan to Hawaii, where it connected to two cables linking
Hawaii with the mainland. This brought the same improvements to trans-Pacific
service that TAT-1 had brought to trans-Atlantic service in 1956.
- 1965
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- AT&T installs the world's first electronic telephone switch (special
purpose computer) in a local telephone exchange, Succasunna, NJ.
- 1968
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- AT&T introduces 911 as a nationwide emergency number.
- 1970
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- AT&T introduces customer dialing of international long distance calls,
initially between Manhattan and London.
- 1971
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- Researchers at Bell Telephone Laboratories create the Unix computer
operating system, which is designed to be hardware independent. It eventually
becomes the underlying language of the Internet.
- 1975-1976
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- Computerization of the network begins as AT&T installs the world's
first digital electronic toll switch, the 4ESS®, in Chicago. This switch could
handle a much higher volume of calls (initially 350,000 per hour) with greater
flexibility and speed than the electromechanical switch it replaced.
- 1977
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- AT&T opens its first Network Operations Center in Bedminster, New
Jersey. With this center AT&T achieves real-time active management of its
entire long distance network from a single location.
-
- In Chicago, AT&T installs the first fiber optic cable in a commercial
communications system.
- 1982
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- AT&T and the Justice Department agree on tentative terms for settlement
of anti-trust suit filed against AT&T in 1974. AT&T agrees to divest
itself of its local telephone operations. In return, the Justice department
agrees to lift the restrictions on AT&T activities contained in the 1956
Consent Decree. The agreement, once accepted by the court, becomes known as the
Modification of Final Judgement or MFJ.
- 1983
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- In conjunction with the soon-to-be-divested Ameritech, AT&T opens the
first commercial cellular telephone system in the United States in Chicago. The
cellular franchises pass to the divested local companies in January.
- 1984
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- On January 1 the Bell System ceases to exist. In its place are seven
Regional Bell Operating Companies and a new AT&T that retains its long
distance telephone, manufacturing, and research and development
operations.
-
- Equal Access carrier selection begins, first in Charleston WV. The Federal
Communications Commission had mandated that all telephone subscribers choose
which long distance company they would reach on dialing 1+ the number. This
would level the playing field and bring full competition to the long distance
telephone market.
-
- AT&T reduces long distance rates by 6.4 percent, as non-traffic
sensitive costs begin moving from rates to local-company administered access
charges. This was the first in a series of rate reductions over the next six
years that totaled approximately forty percent.
- 1988
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- AT&T lays and opens TAT-8, the first fiber optic submarine telephone
cable across the Atlantic. It has a capacity equivalent to 40,000 calls, ten
times that of the last copper cable. (Today's cables have capacities equivalent
to over 1,000,000 calls).
- 1991
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- AT&T acquires computer maker NCR Corporation in an attempt to realize
the synergies it believed inherent in the coming integration of computing and
communications. The acquisition is announced in May and closes in
September.
- 1993
-
- AT&T announces a definitive merger agreement with McCaw Cellular
Communications Inc, the largest provider of cellular service in the United
States. The acquisition is later renamed AT&T Wireless. AT&T completes
the transaction in 1994.
- 1994
-
-
Stockholders at AT&T's annual meeting approve changing the legal name of
the company from American Telephone and Telegraph Corporation to AT&T
Corp.
AT&T completes its merger with McCaw Cellular. The newly acquired
wireless systems gradually adopt the AT&T Wireless name.
- 1995
-
- On September 20, AT&T announces that it is restructuring into three
separate companies: a services company, retaining the AT&T name; a products
and systems company (later named Lucent Technologies) and a computer company
(which reassumed the NCR name). Lucent is spun off in October 1996, and NCR in
December, 1996.
- 1996
-
-
President Bill Clinton signs the Telecommunications Act of 1996 into law. It
is the first rewriting of the nation's communications laws since 1934. The
bill's purpose is to promote competition between local telephone companies,
long distance telephone companies and cable companies by establishing
procedures for the elimination of legal and regulatory barriers between these
industries.
Lucent Technologies, AT&T's products and systems business, becomes an
independent company.
- 1997
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- NCR, AT&T's computer business, becomes an independent company.
- 1998
-
- AT&T signs a definitive merger agreement with TCI, the second largest
cable company in the United States.
- 1999
-
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AT&T announces general availability of its local residential telephone
service in New York with a bundled plan called "AT&T Local One Rate New
York." This is AT&T's first general reentry into the consumer local
telephone business since the break up of the Bell System. It occurs under the
provisions of the Telecommunications Act of 1996.
AT&T completes its merger with TCI.
AT&T makes an unsolicited offer to acquire cable company MediaOne, which
MediaOne accepts.
- 2000
-
-
AT&T completes it acquisition of MediaOne, and becomes the largest cable
company in the United States. The combined cable systems operate as AT&T
Broadband.
AT&T announces that it will reorganize into a family of companies -
AT&T (including AT&T Business and AT&T Consumer), AT&T Wireless
and AT&T Broadband.
For the first time, the volume of data traffic on the AT&T network
exceeds the volume of voice traffic.
- 2001
-
-
AT&T completes its spin-off of AT&T Wireless, which becomes an
independent company.
The Comcast corporation makes an unsolicited offer to acquire AT&T
Broadband. AT&T accepts a revised and improved offer later in the year.
- 2002
-
-
AT&T deploys a new nationwide intelligent optical network which restores
service faster in the event of a failure or disaster. This new network also
provides the capability to dramatically shorten provisioning time for new
high-speed circuits for business customers who have direct access to the
network.
The Comcast Corporation completes its acquisition of AT&T Broadband.
- 2003
-
-
AT&T introduces AT&T
VoiceTone®, the first end-to-end automation solution that integrates
conversational speech technology with a full suite of contact center networking
services. The service makes it possible for customers to hold natural
conversations with computer-based systems that understand what they say and
mean, and that respond to them to fulfill their requests.
- 2004
-
-
AT&T introduces Voice over Internet
Protocol (VoIP) services for consumers, a breakthrough alternative to
traditional voice services. The company
already serves hundreds of businesses with its managed VoIP services.
AT&T introduces AT&T Internet
ProtectSM
, a revolutionary service that can detect and help
stop network-based worms and viruses before they infect and wreak havoc on
corporate and government networks. Thanks to AT&T's groundbreaking
technology, businesses can protect themselves from network-based worms and
viruses without having to deploy firewalls at each location.
- 2005
-
-
AT&T and SBC Communications announce an
agreement whereby SBC will acquire AT&T in a $16 billion transaction
and create the industry's premier communications and networking company.