* 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

* Regional Bell Operating Company, any of the phone companies spun-off from AT & T in 1984

* Bell Labs, a research & development organization founded by AT & T

Assistive technology or adaptive technology ( AT ) is an umbrella term that includes assistive, adaptive, and rehabilitative devices for people with disabilities and also includes the process used in selecting, locating, and using them.

This term was first used by AT & T in commerce on July 5, 1960 and then was introduced to the public on November 18, 1963, when the first push-button telephone was made available to the public.

( The Industry Standard Architecture, or " ISA ", name replaced the " AT " name commonly used for the 16-bit bus.

A derivative of the AT bus structure is still used in the PC / 104 bus, and internally within Super I / O chips.

IBM designed the 8-bit version as a buffered interface to the external bus of the Intel 8088 ( 16 / 8 bit ) CPU used in the original IBM PC and PC / XT, and the 16-bit version as an upgrade for the external bus of the Intel 80286 CPU used in the IBM AT.

It was employed for the IBM PC / AT, introduced in 1984, and then widely used in most PC / AT compatible computers until the early 1990s.

However, because its integrated hardware was incompatible with the hardware used in the original IBM PC, the 80286 was used as the successor instead in the IBM PC / AT.

This chipset was used in the AT & T 3B2 series of minicomputers.

Gender changers are used for RS-232C ports in either the original DB-25 or the IBM AT DE-9 format.

T-4 and T-5 used coaxial cables, similar to the old L-carriers used by AT & T Long Lines.

In Mobile networks, the terminal adapter is used by the Terminal equipment to access the Mobile termination, using AT commands ( see Hayes command set ).

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.

Many early IBM PC compatibles used the same computer bus as the original PC and AT models.

IBM did introduce an upgraded bus in the IBM PS / 2 computer that overcame many of the technical limits of the XT / AT bus, but this was rarely used as the basis for IBM compatible computers since it required licence payments to IBM both for the PS / 2 bus and any prior AT-bus designs produced by the company seeking a license.

A < tt > chmod </ tt > command first appeared in AT & T Unix version 1, and is still used today on Unix-like machines.

For example, the 9 pin DE-9 connector was used by most IBM-compatible PCs since the IBM PC AT, and has been standardized as TIA-574.

When IBM used the 80286 in their IBM Personal Computer AT, they solved this problem by including a software-settable gate to enable or disable ( force to zero ) the A20 address line, between the A20 pin on the 80286 and the system bus ; this is known as Gate-A20 ( the A20 gate ), and it is still implemented in PC chipsets to this day.

In early 1971, a former Air Force electronics technician named John Draper ( later self-nicknamed Captain Crunch, Crunch, Crunchman, or Mr. Crunchtastic ) was informed by his phone phreak friend Joe Engressia that a toy whistle that was, at the time, packaged in boxes of the cereal could be easily modified to emit a tone at precisely 2600 Hertz, the same frequency that was used by AT & T long lines to indicate that a trunk line was ready to route a new call.

Both used the Sceptre NAPLPS terminal from AT & T.