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Index Telephone

A telephone, or phone, is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. [1]

145 relations: Advanced Mobile Phone System, Air horn, Alexander Graham Bell, Alternating current, Amplitude, Analog telephone adapter, Answering machine, Antonio Meucci, AT&T, AT&T Corporation, Bell box, Bell Memorial, Bell System, Business, Busy signal, Call waiting, Called party, Calling party, Camera phone, Candlestick telephone, Capacitor, Carbon microphone, Charles Bourseul, Communications satellite, Computer network, Consumer, Cordless telephone, Crosstalk, Dial tone, Diaphragm (acoustics), Digital Multiplex System, Direct current, Disruptive innovation, Dual-tone multi-frequency signaling, Duplex (telecommunications), E.164, Electromagnetic interference, Electronic switching system, Elisha Gray, Ericofon, Ericsson DBH 1001 telephone, Fiber-optic communication, Four-wire circuit, Frequency, Galvanic corrosion, Handset, Harvard sentences, Headphones, History of computing hardware, History of television, ..., Human voice, Hybrid coil, Impedance matching, Index of telephone-related articles, Induction coil, Innocenzo Manzetti, Internet, Invention, Invention of radio, Japan, Johann Philipp Reis, L'Illustration, Landline, Lineman's handset, List of telephone operating companies, Long-distance calling, Loudspeaker, Mains hum, Microphone, Minalin, Pampanga, Mobile browser, Mobile phone, Model 202 telephone, Model 500 telephone, New York City, Newsweek, Off-hook, Ohm, On-hook, Outside plant, Party line (telephony), Patent, Patent caveat, Philippines, Phone hacking, Plain old telephone service, Power outage, Public switched telephone network, Pulse dialing, Push-button, Push-button telephone, Reis telephone, Richard R. John, Ringer box, Ringing (telephony), Rotary dial, San Francisco, Satellite phone, Sidetone, Signage, Signal, Signaling (telecommunications), Single-wire earth return, Small appliance, Smartphone, Softphone, Sound, Sound-powered telephone, South Korea, Spamming, Speakerphone, Strowger switch, Subscription business model, Switch, Switchboard operator, Telecommunication, Telegraph key, Telegraphy, Telephone booth, Telephone exchange, Telephone keypad, Telephone magneto, Telephone number, Telephone plug, Telephone switchboard, Telephone tapping, Telephony, Text messaging, Tip and ring, Tivadar Puskás, Trunking, Turn-by-turn navigation, Twisted pair, Unicode, Uninterruptible power supply, United States Patent and Trademark Office, Video game, Videotelephony, Virtual reality, Voice coil, Voice over IP, VoIP phone, Water microphone, Western Union, Whistling. Expand index (95 more) »

Advanced Mobile Phone System

Advanced Mobile Phone System (AMPS) is an analog mobile phone system standard developed by Bell Labs, and officially introduced in the Americas on October 13, 1983,.

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Air horn

An air horn is a pneumatic device designed to create an extremely loud noise for signaling purposes.

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Alexander Graham Bell

Alexander Graham Bell (March 3, 1847 – August 2, 1922) was a Scottish-born scientist, inventor, engineer, and innovator who is credited with inventing and patenting the first practical telephone.

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Alternating current

Alternating current (AC) is an electric current which periodically reverses direction, in contrast to direct current (DC) which flows only in one direction.

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The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period).

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Analog telephone adapter

An analog telephone adapter (ATA) is a device for connecting traditional analog telephones, fax machines, and similar customer-premises devices to a digital telephone system or a voice over IP telephony network.

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Answering machine

The answering machine, answerphone or message machine, also known as telephone answering machine (or TAM) in the UK and some Commonwealth countries, ansaphone or ansafone (from a trade name), or telephone answering device (TAD), is used for answering telephones and recording callers' messages.

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Antonio Meucci

Antonio Santi Giuseppe Meucci (13 April 1808 – 18 October 1889) was an Italian inventor and an associate of Giuseppe Garibaldi (a major political figure in the history of Italy).

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AT&T Inc. is an American multinational conglomerate holding company headquartered at Whitacre Tower in Downtown Dallas, Texas.

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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 box

A bell box is an audible device, often electric, which when activated, emits a chime, bell, or buzzer sound.

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Bell Memorial

The Bell Memorial, also known as the Bell Monument and Telephone Monument, is a memorial designed by Walter Seymour Allward to commemorate the invention of the telephone by Alexander Graham Bell at the Bell Homestead National Historic Site, in Brantford, Ontario, Canada.

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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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Business is the activity of making one's living or making money by producing or buying and selling products (goods and services).

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Busy signal

A busy signal (or busy tone or engaged tone) in telephony is an audible or visual signal to the calling party that indicates failure to complete the requested connection of that particular telephone call.

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Call waiting

Call waiting is a telecommunication service offered by a telephone service provider to a subscriber by which the subscriber may suspend a telephone call already in progress to accept a second call.

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Called party

The called party (in some contexts called the "B-Number") is a person who (or device that) answers a telephone call.

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Calling party

The calling party (in some contexts called the "A-Number") is a person who (or device that) initiates a telephone call.

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Camera phone

A camera phone is a mobile phone which is able to capture photographs and often record video using one or more built-in digital cameras.

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Candlestick telephone

The candlestick telephone is a style of telephone that was common from the late 1890s to the 1940s.

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A capacitor is a passive two-terminal electrical component that stores potential energy in an electric field.

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Carbon microphone

The carbon microphone, also known as carbon button microphone, button microphone, or carbon transmitter, is a type of microphone, a transducer that converts sound to an electrical audio signal.

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Charles Bourseul

Charles Bourseul (28 April 1829 – 23 November 1912) was a pioneer in development of the "make and break" telephone about 20 years before Bell made a practical telephone.

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Communications satellite

A communications satellite is an artificial satellite that relays and amplifies radio telecommunications signals via a transponder; it creates a communication channel between a source transmitter and a receiver at different locations on Earth.

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Computer network

A computer network, or data network, is a digital telecommunications network which allows nodes to share resources.

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A consumer is a person or organization that use economic services or commodities.

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Cordless telephone

A cordless telephone or portable telephone is a telephone in which the handset is portable and communicates with the body of the phone by radio, instead of being attached by a cord.

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In electronics, crosstalk is any phenomenon by which a signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel.

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Dial tone

A dial tone is a telephony signal sent by a telephone exchange or private branch exchange (PBX) to a terminating device, such as a telephone, when an off-hook condition is detected.

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Diaphragm (acoustics)

In the field of acoustics, a diaphragm is a transducer intended to inter-convert mechanical vibrations to sounds, or vice versa.

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Digital Multiplex System

Digital Multiplex System (DMS) is the name shared among several different telephony product lines from Nortel Networks for wireline and wireless operators.

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Direct current

Direct current (DC) is the unidirectional flow of electric charge.

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Disruptive innovation

In business, a Disruptive innovation is an innovation that creates a new market and value network and eventually disrupts an existing market and value network, displacing established market-leading firms, products, and alliances.

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Dual-tone multi-frequency signaling

Dual-tone multi-frequency signaling (DTMF) is an in-band telecommunication signaling system using the voice-frequency band over telephone lines between telephone equipment and other communications devices and switching centers.

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Duplex (telecommunications)

A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions.

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E.164 is an ITU-T recommendation, titled The international public telecommunication numbering plan, that defines a numbering plan for the worldwide public switched telephone network (PSTN) and some other data networks.

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Electromagnetic interference

Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction.

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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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Elisha Gray

Elisha Gray (August 2, 1835 – January 21, 1901) was an American electrical engineer who co-founded the Western Electric Manufacturing Company.

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The Ericofon is a one-piece plastic telephone created by the Ericsson Company of Sweden and marketed through the second half of the 20th century.

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Ericsson DBH 1001 telephone

The Bakelite phone (bakelittelefon) officially known as Ericsson DBH 1001, and later as M33, N1020, and ED 702, was a Swedish line of telephones made from the polymer Bakelite and produced for over thirty years between 1931 and 1962.

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Fiber-optic communication

Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber.

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Four-wire circuit

In telecommunication, a four-wire circuit is a two-way circuit using two paths so arranged that the respective signals are transmitted in one direction only by one path and in the other direction by the other path.

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Frequency is the number of occurrences of a repeating event per unit of time.

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Galvanic corrosion

Galvanic corrosion (also called bimetallic corrosion) is an electrochemical process in which one metal corrodes preferentially when it is in electrical contact with another, in the presence of an electrolyte.

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A handset is a component of a telephone that a user holds to the ear and mouth to receive audio through the receiver and speak to the remote party via the built-in transmitter.

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Harvard sentences

The Harvard sentences are a collection of sample phrases that are used for standardized testing of Voice over IP, cellular, and other telephone systems.

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Headphones (or head-phones in the early days of telephony and radio) are a pair of small loudspeaker drivers worn on or around the head over a user's ears.

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History of computing hardware

The history of computing hardware covers the developments from early simple devices to aid calculation to modern day computers.

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History of television

The invention of the television was the work of many individuals in the late 19th century and early 20th century.

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Human voice

The human voice consists of sound made by a human being using the vocal tract, such as talking, singing, laughing, crying, screaming, etc.

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Hybrid coil

A hybrid coil (or bridge transformer, or sometimes hybrid) is a transformer that has three windings, and which is designed to be configured as a circuit having four ports that are conjugate in pairs.

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Impedance matching

In electronics, impedance matching is the practice of designing the input impedance of an electrical load or the output impedance of its corresponding signal source to maximize the power transfer or minimize signal reflection from the load.

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Index of telephone-related articles

These are some of the links to articles that are telephone related.

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Induction coil

An induction coil or "spark coil" (archaically known as an inductorium or Ruhmkorff coil after Heinrich Ruhmkorff) is a type of electrical transformer used to produce high-voltage pulses from a low-voltage direct current (DC) supply.

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Innocenzo Manzetti

Innocenzo Vincenzo Bartolomeo Luigi Carlo Manzetti (17 March 1826 – 15 March 1877) was an Italian inventor born in Aosta.

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The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.

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An invention is a unique or novel device, method, composition or process.

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Invention of radio

Many people were involved in the invention of radio as we know it today.

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Japan (日本; Nippon or Nihon; formally 日本国 or Nihon-koku, lit. "State of Japan") is a sovereign island country in East Asia.

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Johann Philipp Reis

Johann Philipp Reis (January 7, 1834 – January 14, 1874) was a self-taught German scientist and inventor.

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L'Illustration was a weekly French newspaper published in Paris from 1843 to 1944.

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A landline telephone (also known as land line, land-line, main line, home phone, landline, fixed-line, and wireline) is a phone that uses a metal wire or optical fiber telephone line for transmission as distinguished from a mobile cellular line, which uses radio waves for transmission.

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Lineman's handset

A lineman's handset is a special type of telephone used by technicians for installing and testing local loop telephone lines.

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List of telephone operating companies

This is a list of the world's largest telecommunications companies measured by total revenues.

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Long-distance calling

In telecommunications, a long-distance call or trunk call is a telephone call made to a location outside a defined local calling area.

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A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound.

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Mains hum

Mains hum, electric hum, or power line hum is a sound associated with alternating current at the frequency of the mains electricity.

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A microphone, colloquially nicknamed mic or mike, is a transducer that converts sound into an electrical signal.

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Minalin, Pampanga

, officially the, is a settlement_text in the province of,. According to the, it has a population of people.

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Mobile browser

A mobile browser is a web browser designed for use on a mobile device such as a mobile phone or PDA.

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Mobile phone

A mobile phone, known as a cell phone in North America, is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area.

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Model 202 telephone

The model 202 telephone was a desktop telephone produced by Western Electric from 1930 to 1939, as well as by Northern Electric in Canada.

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Model 500 telephone

The Western Electric model 500 telephone series was the standard domestic desk telephone set issued by the Bell System in North America from 1950 through the 1984 Bell System divestiture.

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New York City

The City of New York, often called New York City (NYC) or simply New York, is the most populous city in the United States.

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Newsweek is an American weekly magazine founded in 1933.

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In telephony, the term off-hook has the following meanings.

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The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Simon Ohm.

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In telephony, the term on-hook has the following meanings.

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Outside plant

In telecommunication, the term outside plant has the following meanings.

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Party line (telephony)

A party line (multiparty line, shared service line, party wire) is a local loop telephone circuit that is shared by multiple telephone service subscribers.

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A patent is a set of exclusive rights granted by a sovereign state or intergovernmental organization to an inventor or assignee for a limited period of time in exchange for detailed public disclosure of an invention.

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Patent caveat

A patent caveat, often shortened to caveat, was a legal document filed with the United States Patent Office.

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The Philippines (Pilipinas or Filipinas), officially the Republic of the Philippines (Republika ng Pilipinas), is a unitary sovereign and archipelagic country in Southeast Asia.

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Phone hacking

Phone hacking is the practice of manipulating or gaining unauthorized access to mobile phones, such as by intercepting telephone calls or accessing voicemail messages.

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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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Power outage

A power outage (also called a power cut, a power out, a power blackout, power failure or a blackout) is a short-term or a long-term loss of the electric power to a particular area.

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Public switched telephone network

The public switched telephone network (PSTN) is the aggregate of the world's circuit-switched telephone networks that are operated by national, regional, or local telephony operators, providing infrastructure and services for public telecommunication.

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Pulse dialing

Pulse dialing is a signaling technology in telecommunications in which a direct current local loop circuit is interrupted according to a defined coding system for each signal transmitted, usually a digit.

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A push-button (also spelled pushbutton) or simply button is a simple switch mechanism for controlling some aspect of a machine or a process.

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Push-button telephone

The push-button telephone is a telephone that has buttons or keys for dialing a telephone number, in contrast to having a rotary dial as in earlier telephone instruments.

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Reis telephone

The Reis telephone was an invention named after Philipp Reis of a telephonelike device he constructed.

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Richard R. John

Richard R. John, Jr. (born 1959) is an American historian who specializes in the history of business, technology, communications, and the state.

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Ringer box

A ringer box is a telephone signaling device, similar to a bell box.

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Ringing (telephony)

Ringing is a telecommunication signal that causes a bell or other device to alert a telephone subscriber to an incoming telephone call.

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Rotary dial

A rotary dial is a component of a telephone or a telephone switchboard that implements a signaling technology in telecommunications known as pulse dialing.

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San Francisco

San Francisco (initials SF;, Spanish for 'Saint Francis'), officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California.

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Satellite phone

A satellite telephone, satellite phone, or satphone is a type of mobile phone that connects to orbiting satellites instead of terrestrial cell sites.

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Sidetone is audible feedback to someone speaking when using a handset or headset as an indication of an active transmission.

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Signage is the design or use of signs and symbols to communicate a message to a specific group, usually for the purpose of marketing or a kind of advocacy.

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A signal as referred to in communication systems, signal processing, and electrical engineering is a function that "conveys information about the behavior or attributes of some phenomenon".

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Signaling (telecommunications)

In telecommunication, signaling has the following meanings.

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Single-wire earth return

Single-wire earth return (SWER) or single-wire ground return is a single-wire transmission line which supplies single-phase electric power from an electrical grid to remote areas at low cost.

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Small appliance

A small appliance or small domestic appliance are portable or semi-portable machines, generally used on table-tops, counter-tops, or other platforms, to accomplish a household task.

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A smartphone is a handheld personal computer with a mobile operating system and an integrated mobile broadband cellular network connection for voice, SMS, and Internet data communication; most, if not all, smartphones also support Wi-Fi.

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A softphone is a software program for making telephone calls over the Internet using a general purpose computer rather than dedicated hardware.

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In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid.

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Sound-powered telephone

A sound-powered telephone is a communication device that allows users to talk to each other with the use of a handset, similar to a conventional telephone, but without the use of external power.

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South Korea

South Korea, officially the Republic of Korea (대한민국; Hanja: 大韓民國; Daehan Minguk,; lit. "The Great Country of the Han People"), is a country in East Asia, constituting the southern part of the Korean Peninsula and lying east to the Asian mainland.

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Electronic spamming is the use of electronic messaging systems to send an unsolicited message (spam), especially advertising, as well as sending messages repeatedly on the same site.

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A speakerphone is a telephone with a microphone and loudspeaker provided separately from those in the handset.

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Strowger switch

The Strowger switch is the first commercially successful electromechanical stepping switch telephone exchange system.

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Subscription business model

The subscription business model is a business model where a customer must pay a subscription price to have access to a product or service.

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In electrical engineering, a switch is an electrical component that can "make" or "break" an electrical circuit, interrupting the current or diverting it from one conductor to another.

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Switchboard operator

In the early days of telephony, through roughly the 1960s, companies used manual telephone switchboards, and switchboard operators connected calls by inserting a pair of phone plugs into the appropriate jacks.

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Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wire, radio, optical or other electromagnetic systems.

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Telegraph key

A telegraph key is a switching device used primarily to send Morse code.

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Telegraphy (from Greek: τῆλε têle, "at a distance" and γράφειν gráphein, "to write") is the long-distance transmission of textual or symbolic (as opposed to verbal or audio) messages without the physical exchange of an object bearing the message.

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Telephone booth

A telephone booth, telephone kiosk, telephone call box, telephone box or public call box is a small structure furnished with a payphone and designed for a telephone user's convenience.

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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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Telephone keypad

A telephone keypad is the keypad installed on a push-button telephone or similar telecommunication device for dialing a telephone number.

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Telephone magneto

A telephone magneto is a hand-cranked electrical generator that uses permanent magnets to produce alternating current from the rotating armature.

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Telephone number

A telephone number is a sequence of digits assigned to a fixed-line telephone subscriber station connected to a telephone line or to a wireless electronic telephony device, such as a radio telephone or a mobile telephone, or to other devices for data transmission via the public switched telephone network (PSTN) or other private networks.

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Telephone plug

A telephone plug is a type of connector used to connect a telephone set to the telephone wiring inside a building, establishing a connection to a telephone network.

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Telephone switchboard

A telephone switchboard is a telecommunications system used in the public switched telephone network or in enterprises to interconnect circuits of telephones to establish telephone calls between the subscribers or users, or between other exchanges.

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Telephone tapping

Telephone tapping (also wire tapping or wiretapping in American English) is the monitoring of telephone and Internet conversations by a third party, often by covert means.

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Telephony is the field of technology involving the development, application, and deployment of telecommunication services for the purpose of electronic transmission of voice, fax, or data, between distant parties.

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Text messaging

Text messaging, or texting, is the act of composing and sending electronic messages, typically consisting of alphabetic and numeric characters, between two or more users of mobile phones, tablets, desktops/laptops, or other devices.

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Tip and ring

Tip and ring are the names of the two conductors or sides of a telephone line.

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Tivadar Puskás

Tivadar Puskás de Ditró (English: Theodore Puskás b. 17 September 1844, Pest – d. 16 March 1893, Budapest) was a Hungarian inventor, telephone pioneer, and inventor of the telephone exchange.

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In telecommunications, trunking is a method for a system to provide network access to many clients by sharing a set of lines or frequencies instead of providing them individually.

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Turn-by-turn navigation

Turn-by-turn Navigation is a feature of some GPS navigation devices where directions for a selected route are continually presented to the user in the form of spoken or visual instructions.

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Twisted pair

Twisted pair cabling is a type of wiring in which two conductors of a single circuit are twisted together for the purposes of improving electromagnetic compatibility.

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Unicode is a computing industry standard for the consistent encoding, representation, and handling of text expressed in most of the world's writing systems.

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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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United States Patent and Trademark Office

The United States Patent and Trademark Office (USPTO) is an agency in the U.S. Department of Commerce that issues patents to inventors and businesses for their inventions, and trademark registration for product and intellectual property identification.

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Video game

A video game is an electronic game that involves interaction with a user interface to generate visual feedback on a video device such as a TV screen or computer monitor.

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Videotelephony comprises the technologies for the reception and transmission of audio-video signals by users at different locations, for communication between people in real-time.

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Virtual reality

Virtual reality (VR) is an interactive computer-generated experience taking place within a simulated environment, that incorporates mainly auditory and visual, but also other types of sensory feedback like haptic.

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Voice coil

A voice coil (consisting of a former, collar, and winding) is the coil of wire attached to the apex of a loudspeaker cone.

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Voice over IP

Voice over Internet Protocol (also voice over IP, VoIP or IP telephony) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet.

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VoIP phone

A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet, instead of the traditional public switched telephone network (PSTN).

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Water microphone

A water microphone or water transmitter is based on Ohm's law that current in a wire varies inversely with the resistance of the circuit.

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Western Union

The Western Union Company is an American financial services and communications company.

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Whistling without the use of an artificial whistle is achieved by creating a small opening with one's lips and then blowing or sucking air through the hole.

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[1] https://en.wikipedia.org/wiki/Telephone

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