An ITU-T physical interface standard for serial data communications equipment, formally titled "Electrical Characteristics for Unbalanced Double-Current Interchange Circuits". The combination of V.28 and V.24 is equivalent to the EIA's RS-232 and uses the same 25-pin connectors.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
V.28An ITU standard (1972) that defines the functions of all circuits for the RS-232 interface. In the U.S., EIA-232 incorporates the electrical signal definitions of V.28, the control signals of V.25 and the connector and pin assignments defined in ISO 2110.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.