* 310: 959-1122 San Pedro / Wilmington, CA ( AT & T )

* 478: 990 Dublin, GA. ( BELLSOUTH & AT & T )

* 682: 959-1122 Ft. Worth, TX ( AT & T / SBC )

* 682: 970-1234 Ft. Worth, TX ( AT & T / SBC )

* 760: 959-1122 Oceanside / Escondido / Fallbrook, CA ( Current for all AT & T / PB switches )

* 817: 970-1234 Ft. Worth, TX ( AT & T / SBC )

* 817: 959-1122 Ft. Worth, TX ( AT & T / SBC )

* 912: 940 Vidalia, GA. ( BELLSOUTH & AT & T )

* 972: 959-1122 Plano, TX ( AT & T / SBC )

* 972: 970-1234 Plano, TX ( AT & T / SBC )

* 270: 559 AT & T, Fishskill NY.

AIX / 370 was IBM's third attempt to offer Unix-like functionality for their mainframe line, specifically the System / 370 ( the prior versions were a TSS / 370 based Unix system developed jointly with AT & T c. 1980, and VM / IX a VM / 370 based system developed jointly with Interactive Systems Corporation c. 1984 ).

# REDIRECT AT & T

As of February 18, 2008, carriers in the United States were no longer required to support AMPS and companies such as AT & T and Verizon have discontinued this service permanently.

D-AMPS was a digital, 2G standard used mainly by AT & T Mobility and U. S. Cellular in the United States, Rogers Wireless in Canada, Telcel in Mexico, Telecom Italia Mobile ( TIM ) in Brazil, VimpelCom in Russia, Movilnet in Venezuela, and Cellcom in Israel.

* AT & T Mobility-In areas where AT & T Mobility previously had D-AMPS operating on 1900 MHz frequencies, no analog AMPS network existed, and the D-AMPS network on the 1900 MHz frequency was shut down in mid-2007.

# REDIRECT AT & T Corporation

However, FuturePhone ( as well as other similar services ) ceased operations upon legal challenges from AT & T and other service providers.

In the early 1960s, AT & T introduced digital telephony first on long-distance trunk lines.

* Michigan Bell, the subsidiary of AT & T serving the state of Michigan

It was AT & T's registered trademark from September 4, 1962 to March 13, 1984, and is standardized by ITU-T Recommendation Q. 23.

The teleostereograph machine, a forerunner to the modern electronic fax, was developed by AT & T's Bell Labs in the 1920s ; however, the first commercial use of image facsimile telegraph devices dates back to the time of Samuel F. B. Morse's invention in the 1800s.

From November 17, 1947 to December 23, 1947, John Bardeen and Walter Brattain at AT & T's Bell Labs in the United States, performed experiments and observed that when two gold point contacts were applied to a crystal of germanium, a signal was produced with the output power greater than the input.

Up to version 3. 7 of vi, created in October, 1981, UC Berkeley was the development home for vi, but with Bill Joy's departure in early 1982, to join Sun Microsystems, and AT & T's UNIX System V ( January, 1983 ) adopting vi, changes to the vi codebase happened more slowly and in a more dispersed and mutually incompatible ways.

* February 13 – TAT-2, AT & T's second Trans-Atlantic telephone cable, goes into operation.

A loss of battery power in several of AT & T's switching stations is at fault.

* July 10 – AT & T's Telstar, the world's first commercial communications satellite, is launched into orbit and activated the next day.

These stations were linked together via AT & T's coaxial cable feed, allowing the network to broadcast live television programming to all the stations at the same time.

AT & T's strategies prompted complaints and attracted the attention of the Justice Department.

It was not until a landmark court ruling regarding the Hush-A-Phone in 1956 that the use of a phone attachment ( by a third party vendor ) was allowed for the first time ; though AT & T's right to regulate any device connected to the telephone system was upheld by the courts, they were instructed to cease interference towards Hush-A-Phone users.

The Telecommunications Act of 1996 made extensive revisions to the " Title II " provisions regarding common carriers and repealed the judicial 1982 AT & T consent decree ( often referred to as the " modification of final judgment " or " MFJ ") that effectuated the breakup of AT & T's Bell System.

As a result of AT & T's merger with SBC, and Verizon's merger with MCI, those telephone companies have an obligation to offer naked DSL to consumers.

TAT-3 was AT & T's third transatlantic telephone cable.

TAT-4 was AT & T's fourth transatlantic telephone cable.

TAT-5 was AT & T's 5th transatlantic telephone cable,

TAT-6 was AT & T's sixth transatlantic telephone cable.

TAT-7 was AT & T's 7th transatlantic telephone cable,

TAT-9 was AT & T's 9th transatlantic telephone cable system, in operation from 1992 to 2004, initially carrying 80, 000 telephone circuits between North America and Europe.

TAT-10 was AT & T's 10th transatlantic telephone cable, in operation from 1992 to 2003, initially carrying 2 x 565 Mbit / s between USA and Norden in Germany.

TAT-11 was AT & T's 11th transatlantic telephone cable, in operation from 1993, initially carrying 2 x 565 Mbit / s between USA and France.

The system design used in AT & T's 1XB crossbar exchanges, which entered revenue service from 1938, developed by Bell Telephone Labs, was inspired by the Swedish design but was based on the rediscovered link principle.

Later, Sun and AT & T announced that the two firms would jointly develop AT & T's next version of UNIX: System V Release 4.

This caused many of AT & T's other licensees of UNIX System V to become concerned that this would put Sun in an advantaged position, and it ultimately led to Digital Equipment, HP, IBM, and others forming the Open Software Foundation ( OSF ) in 1988.