|
Go: |
 Visual Taxonomy |
Links | Hide/Show: |
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)
`Σ
► 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
Economics of transport and utility industries