HDLC - meaning and definition. What is HDLC
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What (who) is HDLC - definition

BIT-ORIENTED CODE-TRANSPARENT SYNCHRONOUS DATA LINK LAYER PROTOCOL
Asynchronous Balanced Mode; Asynchronous balanced mode; ISO 13239; Iso 13239; ISO13239; HDLC; ISO/IEC 13239

HDLC         
HDLC         
High-level Data Link Control (Reference: ISO)
High-level Data Link Control         
<networking> (HDLC) A general-purpose data link control protocol defined by ISO for use on both point-to-point and multipoint (multidrop) data links. It supports full-duplex, transparent-mode operation. It is used extensively in both multipoint and computer networks. Some manufacturers and other standards bodies still use their own acronyms, e.g. IBM's SDLC ({Synchronous Data Link Control}), the forerunner of HDLC and ANSI's ADCCP (Advanced Data Communications Control Procedure). [Fred Halsall, "Data Communications, Computer Networks and Open Systems" 4th edition, 1996, p.237, Addison-Wesley Publishing Co. Reading, Mass., USA]. (1997-11-09)

Wikipedia

High-Level Data Link Control

High-Level Data Link Control (HDLC) is a bit-oriented code-transparent synchronous data link layer protocol developed by the International Organization for Standardization (ISO). The standard for HDLC is ISO/IEC 13239:2002.

HDLC provides both connection-oriented and connectionless service.

HDLC can be used for point-to-multipoint connections via the original master-slave modes Normal Response Mode (NRM) and Asynchronous Response Mode (ARM), but they are now rarely used; it is now used almost exclusively to connect one device to another, using Asynchronous Balanced Mode (ABM).