data link communication
41Data service unit — A data service unit, sometimes called a digital service unit, is a piece of telecommunications circuit terminating equipment that transforms digital data between telephone company lines and local equipment. The device converts bipolar digital… …
42Communication en Iran — Le gouvernement iranien gère les moyens d émission, qui incluent trois stations de radio nationale et deux réseaux nationaux de télévision, aussi bien que des douzaines de stations locales de radio et de télévision. En 2000, il y avait 252 radios …
43data communication — The transfer of information from one computer to another over a communications link. The transfer can be occasional, continuous, or a combination of both …
44Power line communication — or power line carrier (PLC), also known as power line digital subscriber line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN), or broadband over power lines (BPL) are systems for carrying data on a conductor… …
45Aircraft Communication Addressing and Reporting System — Aircraft Communications Addressing and Reporting System (or ACARS) is a digital datalink system for transmission of small messages between aircraft and ground stations via radio or satellite. The protocol, which was designed by ARINC to replace… …
46Parallel communication — In telecommunication and computer science, parallel communication is a method of sending several data signals simultaneously over a communication link (comprising of several wired channels in parallel) at one time. It contrasts with serial… …
47Asynchronous communication — In telecommunications, Asynchronous communication is transmission of data without the use of an external clock signal. Any timing required to recover data from the communication symbols is encoded within the symbols. The most significant aspect… …
48Infrared Data Association — The Infrared Data Association (IrDA) defines physical specifications communications protocol standards for the short range exchange of data over infrared light, for uses such as personal area networks (PANs).*IrDA is a very short range example of …
49Connection-oriented communication — Connection oriented (CO mode[1]) communication is a data communication mode in telecommunications whereby the devices at the end points use a protocol to establish an end to end logical or physical connection before any data may be sent. In case… …
50Connectionless communication — In packet switching networks, CL mode[1] or connectionless communication is a data transmission method in which each data packet carries information in a header record that contains a destination address sufficient to permit the independent… …
