RS232 vs ITU V24 Signal Names » History » Revision 3
Revision 2 (laforge, 11/22/2022 12:50 PM) → Revision 3/5 (laforge, 11/23/2022 07:25 PM)
h1. RS232 vs ITU-T V.24 Signal Names There are unfortunately a lot of different terms/names used for serial interfaces, depending on which context/spec you are looking at. This table provides a mapping of the most common signals between different specs: |_.Common Name|_.RS232|_.ITU-T V.24|_.Direction|_.Description| V.24|_.Description| |GND|AB|102|-|Signal/System |GND|AB|102|Signal/System Ground| |TXD|BA|103|DTE->DCE|Transmitted |TXD|BA|103|Received data| |RXD|BB|104|DTE<-DCE|Received |RXD|BB|104|Transmitted data| |RTS|CA|105|DTE->DCE|Request |RTS|CA|105|Request to Send| |CTS|CB|106|DTE<-DCE|Clear |CTS|CB|106|Claer to Send| |DSR|CC|107|DTE<-DCE|Data |DSR|CC|107|Data Set Ready| |DTR|CD|108/2|DTE->DCE|Data |DTR|CD|108/2|Data Terminal Ready| |DCD|CF|109|DTE<-DCE|Data Carrier |CD|CF|109|Carrier detect| |-|-|113|DTE->DCE|Transmitter |-|-|113|Transmitter signal element timing (DTE source)| |-|-|114|DTE<-DCE|Transmitter |-|-|114|Transmitter signal element timing (DCE source)| |-|-|115|DTE<-DCE|Receiver |-|-|115|Receiver signal element timing (DCE source)| |RI|CE|125|DTE<-DCE|Ring |RI|CE|125|Ring Indicator| |-|-|133||Ready |-|-|133|Ready for receiving| h2. Full ITU V.24 table !v24.png!
