Reference document

Org
EIA
Pubnum
TIA-232
Date
2012-07-12
Version
Title
Interface Between Data Terminal Equipment and Data Communications Equipment Employing Serial Binary Data Interchange (identical with ITU-T V.24/V.28:1991)

Applicability

RS-232 has been around as a standard for decades is an electrical interface between Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE) such as modems or DSUs. It appears under different incarnations such as RS-232C, RS-232D, V.24, V.28 or V.10 but essentially all these interfaces are interoperable. RS-232 is used for asynchronous data transfer as well as synchronous links such as SDLC, HDLC, Frame Relay and X.25. In its simplest form, the RS-232-C interface consist of only two wires-one to carry data, plus a circuit common. The circuit common is the absolute voltage reference for all the interface circuitry, the point in the circuit from which all voltages are measured.

A typical DTE device is an ordinary video terminal with a keyboard and a video display. Data on pin 2 of the DTE is transmitted, while the same data on pin 2 of a DCE (modem) is received data.

Responsible Party

Name
NCIA/NSII

Status

URI
http://www.itu.int/rec/T-REC-V.24-200002-I/en

History

Flag Date RFC Version
added 2001-11-20 0.3
changed 2005-09-23 0.7
changed 2010-08-09 5.0
changed 2013-08-12 8.0
changed 2017-01-14 9-19 10.0
UUID
5c34f01d-85f3-41be-82a3-0cc969307b0a