(1) A form of communications line control that uses commands to control the transfer of data over a communications line. (2) A communications discipline conforming to subsets of the Advanced Data Communication Control Procedures (ADCCP) of the American National Standards Institute (ANSI) and High-Level Data Link Control (HDLC) of the International Organization for Standardization (ISO), for transferring synchronous, code-transparent, serial-by-bit information over a communications line. Transmission exchanges may be duplex or half-duplex over switched or nonswitched lines. The configuration of the connection may be point-to-point, multipoint, or loop.
The data link level communications protocol used in SNA.
Software protocol for Layer 2 of the seven-layer OSI communications model. This is based on an HDLC Frame with an eight bit address. As the name implies, it is a synchronous protocol and involves transmission of a clock signal along with the data.
The SNA data link protocol equivalent to the IEEE 802.2 Logical Link Control (LLC) sublayer protocol.
A discipline for managing synchronous, code-transparent, serial-by-bit, information transfer over a link connection. Transmission exchanges may be full-duplex or half-duplex over switched or nonswitched links. The configuration of the link connection may be point-to-point, multipoint, or loop. SDLC conforms to subsets of the Advanced Data Communication Control Procedures (ADDCP) of the American National Standards Institute (ANSI) and High-level Data Link Control (HDLC) of the International Standards Organization (ISO).
(SDLC) an IBM standard protocol, superseding bisynchronous (BSC)
Synchronous Data Link Control (SDLC) is a computer communications protocol. It is the layer 2 protocol for IBM's Systems Network Architecture (SNA).
