double-channel simplex

double-channel simplex

[¦dəb·əl ¦chan·əl ′sim‚pleks]
(communications)
A method that provides for nonsimultaneous communication between two stations through use of two radio-frequency channels, one in each direction.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.