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Telecommunications

Page history last edited by Dmitry Sokolov 1 year, 11 months ago

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https://en.wikipedia.org/wiki/Telecommunication

Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or intelligence of any nature by wire, radio, optical or other electromagnetic systems.[1][2] Telecommunication occurs when the exchange of information between communication participants includes the use of technology. It is transmitted either electrically over physical media, such as cables, or via electromagnetic radiation.[3][4][5][6][7][8] Such transmission paths are often divided into communication channels which afford the advantages of multiplexing. The term is often used in its plural form, telecommunications, because it involves many different technologies.[citation needed]

Early means of communicating over a distance included visual signals, such as beacons, smoke signals, semaphore telegraphs, signal flags, and optical heliographs.[9] Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, and loud whistles. 20th and 21st century technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraph, telephone, and teleprinter, networks, radio, microwave transmission, fiber optics, and communications satellites.

A revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications by Guglielmo Marconi, who won the Nobel Prize in Physics in 1909. Other notable pioneering inventors and developers in the field of electrical and electronic telecommunications include Charles Wheatstone and Samuel Morse (inventors of the telegraph), Alexander Graham Bell (inventor of the telephone), Edwin Armstrong and Lee de Forest (inventors of radio), as well as Vladimir K. Zworykin, John Logie Baird and Philo Farnsworth (some of the inventors of television).


Links  

https://en.wikipedia.org/wiki/Category:Telecommunications

http://www.dmoz.org/Business/Telecommunications/

Subcategories

    ► Telecommunications by continent (8 C)

    ► Telecommunications by country (161 C, 201 P)

``A

    ► Aviation communications (1 C, 16 P)

`B

    ► Telecommunications buildings (5 C, 2 P)

    ► Businesspeople in telecommunications (6 C, 68 P)

`C

    ► Communication towers (2 C, 24 P)

    ► Communications technology (2 C, 10 P)

    ► Telecommunications companies (23 C, 69 P)

    ► Computer networking (25 C, 247 P)

    ► Telecommunication conferences (1 C, 16 P)

`D

`E

    ► Telecommunications economics (54 P)

    ► Telecommunications educators (2 P)

    ► Telecommunications engineering (14 C, 124 P)

    ► Telecommunications engineers (5 C, 1 P)

    ► Telecommunications equipment (17 C, 178 P)

`H

    ► History of telecommunications (16 C, 64 P)

`I

    ► Telecommunications images (1 C, 22 F)

    ► Telecommunications infrastructure (11 C, 89 P)

    ► Integrated Services Digital Network (41 P)

    ► Interference (1 C, 32 P)

    ► Interstellar communication (1 C, 3 P)

`L

    ► Telecommunications lists (3 C, 38 P)

`M

    ► Mesh networking (25 P)

    ► Military communications (18 C, 115 P)

    ► Mobile telecommunications (7 C, 154 P)

    ► Mobile telecommunications networks (2 C, 6 P)

`N

    ► Network access (5 C, 43 P)

Call Centers

Carriers

Colocation

Construction, Installation, and Maintenance

Cost Management

Customer Management

Equipment

Location and Tracking

Regulation

Safety

Services

Two-Way Radio

Associations

Conferences

Consulting

Directories

Education and Training

Employment

Marketing and Advertising

Marketplaces

News and Media

Resources

Software

By Region

`O

    ► Optical communications (3 C, 38 P)

    ► Telecommunications organizations (1 C, 71 P, 1 F)

`P

    ► Telecommunications policy (2 C, 8 P)

    ► Privacy of telecommunications (5 C, 84 P)

`S

    ► Telecommunications systems (48 P)

`T

    ► Telecommunications techniques (33 P)

    ► Telecommunications for development (7 P)

    ► Telemetry (1 C, 35 P)

    ► Teletraffic (1 C, 63 P)

    ► Telecommunications stubs (8 C, 769 P)

Pages

`    Digital signal

    Telecommunication

    Wisecomm

    Outline of telecommunication

    Portal:Telecommunication

`A

`    Access-independent services

    User:Aeitl-ihd/sandbox

    Application-oriented networking

    Aviation communication

`B

`    Bandwidth allocation

    Bandwidth pooling

    Broadcast and Multicast Service

`C

`    Call-second

    Cisco Express Forwarding

    Cloud9 (service provider)

    Common-mode signal

    Communications system

    Contact Center Telephony

`D

`    Issam Darwish

    Data transmission

`E

`    E-UTRA

    Telecommunications engineering

    EnodeB

    European Information Technology Observatory

`F

`    False Answer Supervision

    First office application

    Foreground detection

    FreePBX Distro

    FS-FHSS

`G

`    Greedy embedding

    Grid network

`H

`    History of telecommunication

`I

`    Inteliquent

    Interference (communication)

    Interstellar communication

    IP Multimedia Subsystem

    ISO/IEC JTC 1/SC 6

    ITAD Subscriber Numbers

`L

`    List of countries by telecommunications equipment exports

    LTE (telecommunication)

    LTE Advanced

    LTE frequency bands

    LTE in unlicensed spectrum

    LTE-WLAN Aggregation

 M

`    Magnetoquasistatic field

    Mesh networking

    Military communications

    Mobile soft device

    Modulation error ratio

    Multimedia Broadcast Multicast Service

`N

`    NarrowBand IOT

    Net operation

    Network transparency

    Network Unaffiliated Virtual Operator

    Node (networking)

`O

`    Optical communication

    OSS/BSS

`P

`    Path protection

    Phone Bundle

    User:Phonoscope LIGHTWAVE/sandbox

    Prodapt Solutions

    Public data network

`Q

`    QoS Class Identifier

`R

`    Red Compartida

`S

`    SD-WAN

    Telecommunications service

    Signal-to-crosstalk ratio

    Signal-to-interference-plus-noise ratio

    Software-defined mobile network

    SRVCC

    System Architecture Evolution

`T

`    Telecommunications device for the deaf

    Telecommunications lease

    Telecommunications link

    Teleconference

    Telemetry

    Telephony

    Teletraffic engineering

    Terminal (telecommunication)

    TL 9000

    Traffic analysis

    Turing switch

`U

`    Unger model

    User-in-the-loop

`V

`    Video over LTE

    Visible light communication

    Visual MIMO

    Voice over LTE

`W

`    Water-pouring algorithm

    Wide area network

    Wireless failover

Pages in Other Languages

Categories:

ITU Radio Regulations

History of telecommunications

History of radio

History of television

Economics of transport and utility industries

Electronics

Technology by type

 

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