Dictionary - Definition of HALF-DUPLEX

Domain	Definition
Computing	Half-duplex (hdx, from telegraphy) 1. A type of communication channel using a single circuit which can carry data in either direction but not both directions at once. Compare: simplex, full-duplex. 2. An obsolete term for local echo. (2001-07-21) Source: The Free On-line Dictionary of Computing.
Electrical Engineering	A method of communication between two points in which signals may be transmitted and received but in only one direction at a time, with or without an interrupt feature enabling the receiving station to interrupt the sending station. Source: European Union. (references)
Post & Telecom	Operation of a circuit designed for duplex operation but which, on account of the nature of the terminal equipment, can be operated in one direction only at a time. Source: European Union. (references)
Technology	See: duplex. (references)
Source: compiled by the editor from various references; see credits.		Top

Specialty Expressions: HALF-DUPLEX

Expressions	Domain	Definition
Half-duplex (HDX) operation	Business	Operation in which communication between two terminals occurs in either direction, but in only one direction at a time. Note: Half-duplex operation may occur on a half-duplex circuit or on a duplex circuit, but it may not occur on a simplex circuit. Synonyms one-way reversible operation, two-way alternate operation. (references)
Half-duplex circuit	Post & Telecom	Operation of a circuit designed for duplex operation but which, on account of the nature of the terminal equipment, can be operated in one direction only at a time. Source: European Union. (references)
Source: compiled by the editor from various references; see credits.			Top