high-level data-link control

high-level data-link control

[′hī ‚lev·əl ′dad·ə ‚liŋk kən‚trōl] Abbreviated HDLC. (communications) A bit-oriented protocol for managing information flow in a data communications channel that supports both full-duplex and half-duplex transmission, and both point-to-point and multipoint communications using synchronous data transmission. (computer science) A communications protocol that allows devices from different manufacturers to interface with each other and standardizes the transmission of packets of information between them.