Data link

datalinklinkdata-linkcommunication linklinkscommunications linkdatalinkspathchannelcom-link
In telecommunication a data link is the means of connecting one location to another for the purpose of transmitting and receiving digital information.wikipedia
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Telecommunications link

uplinkdownlinkforward link
In telecommunication a data link is the means of connecting one location to another for the purpose of transmitting and receiving digital information.
When the link is a logical link the type of physical link should always be specified (e.g., data link, uplink, downlink, fiber optic link, point-to-point link, etc.)

Controller–pilot data link communications

CPDLCController Pilot Data LinkController Pilot Data Link Communications (CPDLC)
In civil aviation, a data-link system (known as Controller Pilot Data Link Communications) is used to send information between aircraft and air traffic controllers when an aircraft is too far from the ATC to make voice radio communication and radar observations possible.
Controller–pilot data link communications (CPDLC), also referred to as controller pilot data link (CPDL), is a method by which air traffic controllers can communicate with pilots over a datalink system.

ACARS

ACARS protocolAircraft Communications Addressing and Reporting SystemACARS messaging system
ACARS
In aviation, ACARS (an acronym for aircraft communications addressing and reporting system) is a digital datalink system for transmission of short messages between aircraft and ground stations via airband radio or satellite.

Tactical data link

automated data link (ADL)data link TDL
Tactical Data Links
A tactical data link (TDL) uses a data link standard in order to provide communication via radio waves or cable used by the U.S. armed forces and NATO nations.

Timex Datalink

Timex Datalink USBTimex Data LinkTimex Ironman Datalink
Timex Datalink
Timex Datalink or Timex Data Link is a line of early smartwatches manufactured by Timex and is considered a wristwatch computer.

Unmanned aerial vehicle

droneUAVdrones
In unmanned aircraft, land vehicles, boats, and spacecraft, a two-way (full-duplex or half-duplex) data-link is used to send control signals, and to receive telemetry.
Most UAVs use a radio for remote control and exchange of video and other data.

Telecommunication

telecommunicationscommunicationstelecom
In telecommunication a data link is the means of connecting one location to another for the purpose of transmitting and receiving digital information.

Data terminal equipment

DTEData Terminal Equipment (DTE)DTEs
It can also refer to a set of electronics assemblies, consisting of a transmitter and a receiver (two pieces of data terminal equipment) and the interconnecting data telecommunication circuit.

Telecommunication circuit

circuitcircuitsconnection
It can also refer to a set of electronics assemblies, consisting of a transmitter and a receiver (two pieces of data terminal equipment) and the interconnecting data telecommunication circuit.

Link layer

link protocolLinknetwork interface layer
These are governed by a link protocol enabling digital data to be transferred from a data source to a data sink.

Sink (computing)

sinkdata sinksinks
These are governed by a link protocol enabling digital data to be transferred from a data source to a data sink.

Aviation

air transportairflying
In civil aviation, a data-link system (known as Controller Pilot Data Link Communications) is used to send information between aircraft and air traffic controllers when an aircraft is too far from the ATC to make voice radio communication and radar observations possible.

Air traffic control

control towerATCair traffic control tower
In civil aviation, a data-link system (known as Controller Pilot Data Link Communications) is used to send information between aircraft and air traffic controllers when an aircraft is too far from the ATC to make voice radio communication and radar observations possible.

Radar

radar stationradarsradar system
In civil aviation, a data-link system (known as Controller Pilot Data Link Communications) is used to send information between aircraft and air traffic controllers when an aircraft is too far from the ATC to make voice radio communication and radar observations possible.

Atlantic Ocean

AtlanticNorth AtlanticAtlantic coast
Such systems are used for aircraft crossing the Atlantic and Pacific oceans.

Pacific Ocean

PacificWestern PacificSouth Pacific
Such systems are used for aircraft crossing the Atlantic and Pacific oceans.

Nav Canada

NavCanada
One such system, used by Nav Canada and NATS over the North Atlantic, uses a five-digit data link sequence number confirmed between air traffic control and the pilots of the aircraft before the aircraft proceeds to cross the ocean.

NATS Holdings

NATSNational Air Traffic ServicesFerronats
One such system, used by Nav Canada and NATS over the North Atlantic, uses a five-digit data link sequence number confirmed between air traffic control and the pilots of the aircraft before the aircraft proceeds to cross the ocean.

Flight management system

FMSflight management computerControl Display Unit
This system uses the aircraft's flight management computer to send location, speed and altitude information about the aircraft to the ATC.

Control system

control systemscontrolControls
In unmanned aircraft, land vehicles, boats, and spacecraft, a two-way (full-duplex or half-duplex) data-link is used to send control signals, and to receive telemetry.

Telemetry

radio telemetrytelemetricradio-collared
In unmanned aircraft, land vehicles, boats, and spacecraft, a two-way (full-duplex or half-duplex) data-link is used to send control signals, and to receive telemetry.

Simplex communication

simplexunidirectionalCDS-link receiver
Simplex communications, most commonly meaning all communications in one direction only.

Duplex (telecommunications)

half-duplexfull-duplexduplex
In unmanned aircraft, land vehicles, boats, and spacecraft, a two-way (full-duplex or half-duplex) data-link is used to send control signals, and to receive telemetry. Half-duplex communications, meaning communications in both directions, but not both ways simultaneously.