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66 relations: Alcatel-Lucent, Analogue electronics, AT&T Corporation, Bell System, Bit, Business telephone system, Central processing unit, Class-4 telephone switch, Class-5 telephone switch, Codec, Command-line interface, Common-network interface ring, Community dial office, Computer memory, Digital Audio Tape, Digital cross connect system, Digital Signal 0, Digital Signal 1, Digital Signal 3, Distributed computing, Distributed switching, DMS-100, Electronic switching system, Emulator, GTD-5 EAX, Integrated Services Digital Network, Intel 8086, Limited availability, Line card, Magnetic tape data storage, Mainframe computer, Makefile, Microprocessor, Motorola 68000, Multi-Environment Real-Time, Multi-mode optical fiber, No. 4 Electronic Switching System, Nokia, Nortel, Number One Electronic Switching System, Operating system, Packet switching, Plain old telephone service, Provisioning, PRX (telephony), Recent change memory administration center, SCSI, Seneca, Illinois, Signaling (telecommunications), Solaris (operating system), ..., SPARC, Storage Module Device, Subscriber loop carrier, Sun Microsystems, Switching Control Center System, Synchronous optical networking, System console, T-carrier, Telephone exchange, Teleprinter, Time-slot interchange, Uninterruptible power supply, Unix, Western Electric, Workstation, 3B series computers. Expand index (16 more) »
Alcatel-Lucent
Alcatel-Lucent S.A. was a French global telecommunications equipment company, headquartered in Boulogne-Billancourt, France.
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Analogue electronics
Analogue electronics (also spelled analog electronics) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two levels.
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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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Bell System
The Bell System was the system of companies, led by the Bell Telephone Company and later by AT&T, which provided telephone services to much of the United States and Canada from 1877 to 1984, at various times as a monopoly.
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Bit
The bit (a portmanteau of binary digit) is a basic unit of information used in computing and digital communications.
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Business telephone system
A business telephone system is a multiline telephone system typically used in business environments, encompassing systems ranging from small key telephone systems to large-scale private branch exchanges.
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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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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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Codec
A codec is a device or computer program for encoding or decoding a digital data stream or signal.
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Command-line interface
A command-line interface or command language interpreter (CLI), also known as command-line user interface, console user interface and character user interface (CUI), is a means of interacting with a computer program where the user (or client) issues commands to the program in the form of successive lines of text (command lines).
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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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Community dial office
A "Community Dial Office" (CDO) was a small Class 5 telephone exchange in a rural area.
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Computer memory
In computing, memory refers to the computer hardware integrated circuits that store information for immediate use in a computer; it is synonymous with the term "primary storage".
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Digital Audio Tape
Digital Audio Tape (DAT or R-DAT) is a signal recording and playback medium developed by Sony and introduced in 1987.
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Digital cross connect system
A digital cross-connect system (DCS or DXC) is a piece of circuit-switched network equipment, used in telecommunications networks, that allows lower-level TDM bit streams, such as DS0 bit streams,to be rearranged and interconnected among higher-level TDM signals, such as DS1 bit streams.
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Digital Signal 0
Digital Signal 0 (DS0) is a basic digital signaling rate of 64 kilobits per second (kbit/s), corresponding to the capacity of one analog voice-frequency-equivalent communication channel.
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Digital Signal 1
Digital Signal 1 (DS1, sometimes DS-1) is a T-carrier signaling scheme devised by Bell Labs.
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Digital Signal 3
A Digital Signal 3 (DS3) is a digital signal level 3 T-carrier.
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Distributed computing
Distributed computing is a field of computer science that studies distributed systems.
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Distributed switching
Distributed switching is an architecture in which multiple processor-controlled switching units are distributed.
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DMS-100
The DMS-100 Switch Digital Multiplex System (DMS) was a line of telephone exchange switches manufactured by Northern Telecom.
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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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Emulator
In computing, an emulator is hardware or software that enables one computer system (called the host) to behave like another computer system (called the guest).
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GTD-5 EAX
The GTD-5 EAX (General Telephone Digital Number 5 Electronic Automatic Exchange) is the Class 5 telephone switch developed by GTE Automatic Electric Laboratories.
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Integrated Services Digital Network
Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.
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Intel 8086
The 8086 (also called iAPX 86) is a 16-bit microprocessor chip designed by Intel between early 1976 and mid-1978, when it was released.
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Limited availability
When customers of a public switched telephone network make telephone calls, they utilize a telecommunications network called a switched-circuit network.
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Line card
A line card or digital line card is a modular electronic circuit designed to fit on a separate printed circuit board (PCB) and interface with a telecommunications access network.
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Magnetic tape data storage
Magnetic tape data storage is a system for storing digital information on magnetic tape using digital recording.
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Mainframe computer
Mainframe computers (colloquially referred to as "big iron") are computers used primarily by large organizations for critical applications; bulk data processing, such as census, industry and consumer statistics, enterprise resource planning; and transaction processing.
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Makefile
A makefile is a file (by default named "Makefile") containing a set of directives used by a make build automation tool to generate a target/goal.
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Microprocessor
A microprocessor is a computer processor that incorporates the functions of a central processing unit on a single integrated circuit (IC), or at most a few integrated circuits.
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Motorola 68000
The Motorola 68000 ("'sixty-eight-thousand'"; also called the m68k or Motorola 68k, "sixty-eight-kay") is a 16/32-bit CISC microprocessor, which implements a 32-bit instruction set, with 32-bit registers and 32-bit internal data bus, but with a 16-bit data ALU and two 16-bit arithmetic ALUs and a 16-bit external data bus, designed and marketed by Motorola Semiconductor Products Sector.
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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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Multi-mode optical fiber
Multi-mode optical fiber is a type of optical fiber mostly used for communication over short distances, such as within a building or on a campus.
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No. 4 Electronic Switching System
The No.
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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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Operating system
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs.
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Packet switching
Packet switching is a method of grouping data which is transmitted over a digital network into packets which are made of a header and a payload.
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Plain old telephone service
Plain old telephone service or plain ordinary telephone service (POTS) is a retronym for voice-grade telephone service employing analog signal transmission over copper loops.
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Provisioning
In telecommunication, provisioning involves the process of preparing and equipping a network to allow it to provide new services to its users.
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PRX (telephony)
The PRX205 (PRX/A) is a processor controlled reed relay telephone exchange developed by Philips Telecommunicatie Industrie BV (PTI) in Hilversum during the late 1960s and early 1970s.
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Recent change memory administration center
RCMAC stands for recent change memory administration center, sometimes mistakenly called recent change message accounting center, in late 20th century Bell System parlance, or recent change memory administration group (RCMAG).
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SCSI
Small Computer System Interface (SCSI) is a set of standards for physically connecting and transferring data between computers and peripheral devices.
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Seneca, Illinois
Seneca is a village in LaSalle and Grundy counties in the U.S. state of Illinois.
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Signaling (telecommunications)
In telecommunication, signaling has the following meanings.
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Solaris (operating system)
Solaris is a Unix operating system originally developed by Sun Microsystems.
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SPARC
SPARC, for Scalable Processor Architecture, is a reduced instruction set computing (RISC) instruction set architecture (ISA) originally developed by Sun Microsystems.
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Storage Module Device
Storage Module Drive (SMD) is a family of storage devices (hard disk drives) that were first shipped by Control Data Corporation in December 1973 as the CDC 9760 40 MB (unformatted) storage module disk drive.
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Subscriber loop carrier
A subscriber loop carrier or subscriber line carrier (SLC) provides telephone exchange-like telephone interface functionality.
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Sun Microsystems
Sun Microsystems, Inc. was an American company that sold computers, computer components, software, and information technology services and created the Java programming language, the Solaris operating system, ZFS, the Network File System (NFS), and SPARC.
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Switching Control Center System
The Switching Control Center System was an operations support system developed by Bell Laboratories and deployed during the early 1970s.
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Synchronous optical networking
Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs).
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System console
The system console, computer console, root console, operator's console, or simply console is the text entry and display device for system administration messages, particularly those from the BIOS or boot loader, the kernel, from the init system and from the system logger.
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T-carrier
The T-carrier is a member of the series of carrier systems developed by AT&T Bell Laboratories for digital transmission of multiplexed telephone calls.
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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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Teleprinter
A teleprinter (teletypewriter, Teletype or TTY) is an electromechanical typewriter that can be used to send and receive typed messages through various communications channels, in both point-to-point and point-to-multipoint configurations.
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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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Uninterruptible power supply
An uninterruptible power supply or uninterruptible power source (UPS) is an electrical apparatus that provides emergency power to a load when the input power source or mains power fails.
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Unix
Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.
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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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Workstation
A workstation is a special computer designed for technical or scientific applications.
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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, 5ESS Switch, 5ESS switch, 5ess switch.
References
[1] https://en.wikipedia.org/wiki/5ESS_Switching_System
