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No. 4 Electronic Switching System

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The No. [1]

32 relations: Advanced Telecommunications Computing Architecture, Alcatel-Lucent, AT&T Corporation, Atlanta, Bell System Practices, Bell System Technical Journal, Breakup of the Bell System, Central processing unit, Chicago, Class-4 telephone switch, Class-5 telephone switch, Common-channel signaling, Common-network interface ring, Crossbar switch, Disk storage, Electronic switching system, Henry Earle Vaughan, Lisle, Illinois, Multi-Environment Real-Time, Naperville, Illinois, Nokia, Nortel, Number One Electronic Switching System, Oklahoma City, Regional Bell Operating Company, SBC Long Distance, Telephone exchange, Time-slot interchange, Western Electric, YouTube, 3B series computers, 5ESS Switching System.

Advanced Telecommunications Computing Architecture

Advanced Telecommunications Computing Architecture (ATCA or AdvancedTCA) is the largest specification effort in the history of the PCI Industrial Computer Manufacturers Group (PICMG), with more than 100 companies participating.

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Alcatel-Lucent

Alcatel-Lucent S.A. was a French global telecommunications equipment company, headquartered in Boulogne-Billancourt, France.

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AT&T Corporation

AT&T Corp., originally the American Telephone and Telegraph Company, is the subsidiary of AT&T that provides voice, video, data, and Internet telecommunications and professional services to businesses, consumers, and government agencies.

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Atlanta

Atlanta is the capital city and most populous municipality of the state of Georgia in the United States.

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Bell System Practices

The Bell System Practices is a compilation of technical publications which describes the best methods of engineering, constructing, installing, and maintaining the telephone plant of the Bell System under direction of AT&T and Bell Telephone Laboratories.

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Bell System Technical Journal

The Bell System Technical Journal was a periodical publication by the American Telephone and Telegraph Company (AT&T) in New York devoted to the scientific and engineering aspects of electrical communication.

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Breakup of the Bell System

The breakup of the Bell System was mandated on January 8, 1982, by an agreed consent decree providing that AT&T Corporation would, as had been initially proposed by AT&T, relinquish control of the Bell Operating Companies that had provided local telephone service in the United States and Canada up until that point.

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Central processing unit

A central processing unit (CPU) is the electronic circuitry within a computer that carries out the instructions of a computer program by performing the basic arithmetic, logical, control and input/output (I/O) operations specified by the instructions.

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Chicago

Chicago, officially the City of Chicago, is the third most populous city in the United States, after New York City and Los Angeles.

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Class-4 telephone switch

A class-4, or tandem, telephone switch is a U.S. telephone company central office telephone exchange used to interconnect local exchange carrier offices for long distance communications in the public switched telephone network.

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Class-5 telephone switch

A Class-5 telephone switch is a telephone switch or telephone exchange in the public switched telephone network located at the local telephone company's central office, directly serving subscribers.

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Common-channel signaling

In telephony, common-channel signaling (CCS), in the US also common-channel interoffice signaling (CCIS), is the transmission of signaling information (control information) on a separate channel than the data, and, more specifically, where that signaling channel controls multiple data channels.

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Common-network interface ring

The common-network interface ring (CNI ring) provides common-channel signaling (CCS) functionality on several Alcatel-Lucent SS7 products.

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Crossbar switch

In electronics, a crossbar switch (cross-point switch, matrix switch) is a collection of switches arranged in a matrix configuration.

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Disk storage

Disk storage (also sometimes called drive storage) is a general category of storage mechanisms where data is recorded by various electronic, magnetic, optical, or mechanical changes to a surface layer of one or more rotating disks.

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Electronic switching system

In telecommunications, an electronic switching system (ESS) is a telephone switch that uses digital electronics and computerized control to interconnect telephone circuits for the purpose of establishing telephone calls.

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Henry Earle Vaughan

Henry Earle Vaughan, better known as H. Earle Vaughan, (February 3, 1912 – March 9, 1978) was an American telephony engineer, responsible for system and software design for Bell Laboratories' Electronic Switching System No. 1 ESS, and for planning and development of No. 4 Electronic Switching System for long distance telephony.

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Lisle, Illinois

Lisle is a village in DuPage County, Illinois, United States.

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Multi-Environment Real-Time

Multi-Environment Real-Time (MERT) was a hybrid time-sharing/real-time operating system developed in the 1970s at Bell Labs for use in embedded minicomputers (in particular PDP-11s).

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Naperville, Illinois

Naperville is a city in DuPage and Will counties in the U.S. state of Illinois, and a suburb of Chicago.

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Nokia

Nokia is a Finnish multinational telecommunications, information technology, and consumer electronics company, founded in 1865.

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Nortel

Nortel Networks Corporation, formerly known as Northern Telecom Limited, Northern Electric and sometimes known simply as Nortel, was a multinational telecommunications and data networking equipment manufacturer headquartered in Mississauga, Ontario, Canada.

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Number One Electronic Switching System

The Number One Electronic Switching System (1ESS) was the first large-scale stored program control (SPC) telephone exchange or electronic switching system in the Bell System.

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Oklahoma City

Oklahoma City, often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma.

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Regional Bell Operating Company

The Regional Bell Operating Companies (RBOC) are the result of United States v. AT&T, the U.S. Department of Justice antitrust suit against the former American Telephone & Telegraph Company (later known as AT&T Corp.). On January 8, 1982, AT&T Corp.

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SBC Long Distance

SBC Long Distance LLC is a long distance telephone company owned by AT&T that does business as AT&T Long Distance.

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Telephone exchange

A telephone exchange is a telecommunications system used in the public switched telephone network or in large enterprises.

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Time-slot interchange

A time-slot interchange (TSI) switch is a network switch that stores data in RAM in one sequence, and reads it out in a different sequence.

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Western Electric

Western Electric Company (WE, WECo) was an American electrical engineering and manufacturing company that served as the primary supplier to AT&T from 1881 to 1996.

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YouTube

YouTube is an American video-sharing website headquartered in San Bruno, California.

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3B series computers

The 3B series computers were a line of micro-programmable minicomputers produced by AT&T Computer Systems' Western Electric subsidiary.

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5ESS Switching System

The 5ESS Switching System is a Class 5 telephone electronic switching system developed by Western Electric for the American Telephone and Telegraph Company (AT&T) and the Bell System in the United States.

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Redirects here:

4ESS, 4ESS Switch, 4ESS switch, 4ess, 4ess switch.

References

[1] https://en.wikipedia.org/wiki/No._4_Electronic_Switching_System

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