58 relations: Acknowledgement (data networks), Advanced Data Communication Control Procedures, American National Standards Institute, Asynchronous serial communication, Bit error rate, Bit stuffing, Bit-oriented protocol, Circuit switching, Cisco HDLC, Communication protocol, Connection-oriented communication, Connectionless communication, Consistent Overhead Byte Stuffing, Cyclic redundancy check, Data circuit-terminating equipment, Data link layer, Data structure alignment, Data terminal equipment, Duplex (telecommunications), E-carrier, Endianness, Escape character, Forward error correction, Frame (networking), Frame check sequence, Frame Relay, Hexadecimal, IBM, IBM Systems Network Architecture, IEEE 802.2, Integrated Services Digital Network, International Organization for Standardization, International Telecommunication Union, Internet, LAPB, Link Access Procedure for Frame Relay, Link Access Procedure for Modems, Link Access Procedures, D channel, List of ITU-T V-series recommendations, Logical link control, Modem, Phase-locked loop, Ping (networking utility), Point-to-multipoint communication, Point-to-point (telecommunications), Point-to-Point Protocol, Radiotelephony procedure, Resource contention, RS-232, Serial Line Internet Protocol, ..., Serial port, Software flow control, Synchronous Data Link Control, Synchronous optical networking, Synchronous serial communication, Token passing, Wide area network, X.25. Expand index (8 more) » « Shrink index
In data networking, telecommunications, and computer buses, an acknowledgement (ACK) is a signal passed between communicating processes, computers, or devices to signify acknowledgement, or receipt of message, as part of a communications protocol.
In telecommunication, Advanced Data Communication Control Procedures (or Protocol) (ADCCP) is a bit-oriented data link layer protocol used to provide point-to-point and point-to-multipoint transmission of data frames that contain error control information.
The American National Standards Institute (ANSI) is a private non-profit organization that oversees the development of voluntary consensus standards for products, services, processes, systems, and personnel in the United States.
Asynchronous serial communication is a form of serial communication in which the communicating endpoints' interfaces are not continuously synchronized by a common clock signal.
In digital transmission, the number of bit errors is the number of received bits of a data stream over a communication channel that have been altered due to noise, interference, distortion or bit synchronization errors.
In data transmission and telecommunication, bit stuffing (also known—uncommonly—as positive justification) is the insertion of non information bits into data.
A bit-oriented protocol is a communications protocol that sees the transmitted data as an opaque stream of bits with no semantics, or meaning.
Circuit switching is a method of implementing a telecommunications network in which two network nodes establish a dedicated communications channel (circuit) through the network before the nodes may communicate.
Cisco HDLC (also known as cHDLC) is an extension to the High-Level Data Link Control network protocol created by Cisco Systems, Inc.
In telecommunication, a communication protocol is a system of rules that allow two or more entities of a communications system to transmit information via any kind of variation of a physical quantity.
Connection-oriented communication is a network communication mode in telecommunications and computer networking, where a communication session or a semi-permanent connection is established before any useful data can be transferred, and where a stream of data is delivered in the same order as it was sent.
Connectionless communication, often referred to as CL-mode communication,Information Processing Systems - Open Systems Interconnection, "Transport Service Definition - Addendum 1: Connectionless-mode Transmission", International Organization for Standardization, International Standard 8072/AD 1, December 1986.
Consistent Overhead Byte Stuffing (COBS) is an algorithm for encoding data bytes that results in efficient, reliable, unambiguous packet framing regardless of packet content, thus making it easy for receiving applications to recover from malformed packets.
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to raw data.
A data circuit-terminating equipment (DCE) is a device that sits between the data terminal equipment (DTE) and a data transmission circuit.
The data link layer, or layer 2, is the second layer of the seven-layer OSI model of computer networking.
Data structure alignment refers to the way data is arranged and accessed in computer memory.
Data terminal equipment (DTE) is an end instrument that converts user information into signals or reconverts received signals.
A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions.
The E-carrier is a member of the series of carrier systems developed for digital transmission of many simultaneous telephone calls by time-division multiplexing.
Endianness refers to the sequential order in which bytes are arranged into larger numerical values when stored in memory or when transmitted over digital links.
In computing and telecommunication, an escape character is a character which invokes an alternative interpretation on subsequent characters in a character sequence.
In telecommunication, information theory, and coding theory, forward error correction (FEC) or channel coding is a technique used for controlling errors in data transmission over unreliable or noisy communication channels.
A frame is a digital data transmission unit in computer networking and telecommunication.
A frame check sequence (FCS) refers to the extra error-detecting code added to a frame in a communications protocol.
Frame Relay is a standardized wide area network technology that specifies the physical and data link layers of digital telecommunications channels using a packet switching methodology.
In mathematics and computing, hexadecimal (also base, or hex) is a positional numeral system with a radix, or base, of 16.
The International Business Machines Corporation (IBM) is an American multinational technology company headquartered in Armonk, New York, United States, with operations in over 170 countries.
Systems Network Architecture (SNA) is IBM's proprietary networking architecture, created in 1974.
IEEE 802.2 is the original name of the ISO/IEC 8802-2 standard which defines logical link control (LLC) as the upper portion of the data link layer of the OSI Model.
Integrated Services Digital Network (ISDN) is a set of communication standards for simultaneous digital transmission of voice, video, data, and other network services over the traditional circuits of the public switched telephone network.
The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from various national standards organizations.
The International Telecommunication Union (ITU; Union Internationale des Télécommunications (UIT)), originally the International Telegraph Union (Union Télégraphique Internationale), is a specialized agency of the United Nations (UN) that is responsible for issues that concern information and communication technologies.
The Internet is the global system of interconnected computer networks that use the Internet protocol suite (TCP/IP) to link devices worldwide.
Link Access Procedure, Balanced (LAPB) implements the data link layer as defined in the X.25 protocol suite.
In wide area network computing, Link Access Procedure for Frame Relay (or LAPF) is part of the network's communications protocol which ensures that frames are error free and executed in the right sequence.
Link Access Procedure for Modems (LAPM) is part of the V.42 error correction protocol for modems.
In Integrated Services Digital Network (ISDN) telecommunications, Link Access Procedures, D channel is part of the network's communications protocol which ensures that messages are error free and executed in the right sequence.
The ITU-T V-Series Recommendations on Data communication over the telephone network specify the protocols that govern approved modem communication standards and interfaces.
In the IEEE 802 reference model of computer networking, the logical link control (LLC) data communication protocol layer is the upper sublayer of the data link layer (layer 2) of the seven-layer OSI model.
A modem (modulator–demodulator) is a network hardware device that modulates one or more carrier wave signals to encode digital information for transmission and demodulates signals to decode the transmitted information.
A phase-locked loop or phase lock loop abbreviated as PLL is a control system that generates an output signal whose phase is related to the phase of an input signal.
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network.
In telecommunications, point-to-multipoint communication (P2MP, PTMP or PMP) is communication which is accomplished via a distinct type of one-to-many connection, providing multiple paths from a single location to multiple locations.
In telecommunications, a point-to-point connection refers to a communications connection between two Communication endpoints or nodes.
In computer networking, Point-to-Point Protocol (PPP) is a data link layer (layer 2) communications protocol used to establish a direct connection between two nodes.
Radiotelephony procedure (also on-air protocol and voice procedure) includes various techniques used to clarify, simplify and standardize spoken communications over two-way radios, in use by the armed forces, in civil aviation, police and fire dispatching systems, citizens' band radio (CB), and Amateur radio.
In computer science, resource contention is a conflict over access to a shared resource such as random access memory, disk storage, cache memory, internal buses or external network devices.
In telecommunications, RS-232, Recommended Standard 232 is a standard introduced in 1960 for serial communication transmission of data.
The Serial Line Internet Protocol (also SLIP) is an encapsulation of the Internet Protocol designed to work over serial ports and router connections.
In computing, a serial port is a serial communication interface through which information transfers in or out one bit at a time (in contrast to a parallel port).
Software flow control is a method of flow control used in computer data links, especially RS-232 serial.
Synchronous Data Link Control (SDLC) is a computer communications protocol.
Synchronous optical networking (SONET) and synchronous digital hierarchy (SDH) are standardized protocols that transfer multiple digital bit streams synchronously over optical fiber using lasers or highly coherent light from light-emitting diodes (LEDs).
Synchronous serial communication describes a serial communication protocol in which "data is sent in a continuous stream at constant rate." Synchronous communication requires that the clocks in the transmitting and receiving devices are synchronized – running at the same rate – so the receiver can sample the signal at the same time intervals used by the transmitter.
On a local area network, token passing is a channel access method where a signal called a token is passed between nodes to authorize that node to communicate.
A wide area network (WAN) is a telecommunications network or computer network that extends over a large geographical distance/place.
X.25 is an ITU-T standard protocol suite for packet switched wide area network (WAN) communication.