Topic outline of telecommunication

:"For a more comprehensive list, see the ."

Telecommunication is the transmission of signals over a distance for the purpose of communication. In modern times, this process almost always involves the sending of electromagnetic waves by electronic transmitters but in earlier years it may have involved the use of smoke signals, drums or semaphore lines.

The following outline is provided as an overview of and introduction to telecommunication:

Essence of telecommunication

: "Main article: Telecommunication"

Types of telecommunication networks

* Computer networks
* Public telephone networks
* Radio networks
* Television networks
* Internet

Aspects of telecommunication transmission

* Analog
* Digital
* Optical

Telecommunication technology

* Modulation
** Amplitude modulation
** Frequency modulation
** Quadrature amplitude modulation
* Nyquist rate
* Nyquist ISI criterion
* Pulse shaping
* Intersymbol interference

Media Types

* Physical media for Telecommunication
** Twisted pair
** Coaxial cable
** Optical fiber
* Telecommunication through Free Space
** Broadcast radio frequency including television and radio
** Line-of-sight
*** Communications satellite
*** Terrestrial Microwave
*** Wireless local area network (WLAN) repeaters

Relationship between Media and Transmitters

* Physical access to media
** Simplex
** Half-duplex
** Full-duplex
* Logical relationships
** One-way
** Two-way alternating
** Two-way simultaneous

Multiple Access to Media

* Multiplexing
** Analog
** Digital
*** Time-division multiplexing
*** Statistical multiplexing and Packet-switching
** Media Access Control
*** Contention
*** Token-based
**** Centralized token control
**** Distributed token control

History of telecommunication

: "Main article: History of telecommunication"

* History of the telephone, Timeline of the telephone
* History of radio
* History of telegraphy
* History of television
* History of mobile phones
* History of computing hardware
* History of the Internet

Basic telecommunication concepts

* E-mail
* Instant messaging
* Radio
* Telephone
* Television

Telecommunication scholars

Leaders in telecommunication

AT&T, BT Group plc, Verizon, Alcatel-Lucent, AVAYA, Aricent, CISCO, NEC, NORTEL and Many others.

Telecommunication lists

: "Main article: and its sub-categories"

See also

* laser space communications

External links