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EIA-232D (RS232-D), ITU-TSS (CCITT) V.24/V.28, ISO 2110
coté DTE
coté DCE


N° broche Nom RS232 V.24 Direction Description
1 GND n/a 101
Shield Ground
2 TXD BA 103
-->
Transmit Data
3 RXD BB 104
<--
Receive Data
4 RTS CA 105
-->
Request to Send
5 CTS CB 106
<--
Clear to Send
6 DSR CC 107
<--
Data Set Ready
7 GND AB 102
System Ground
8 CD CF 109
<--
Carrier Detect
9 -    
-
RESERVED
10 -    
-
RESERVED
11 STF   126
-->
Select Transmit Channel
12 S.CD SCF 122
<--
Secondary Carrier Detect
13 S.CTS SCB 121
<--
Secondary Clear to Send
14 S.TXD SBA 118
-->
Secondary Transmit Data
15 TCK DB 114
<--
Transmission Signal Element Timing
16 S.RXD SBB 119
<--
Secondary Receive Data
17 RCK DD 115
<--
Receiver Signal Element Timing
18 LL LL 141
-->
Local Loop Control
19 S.RTS SCA 120
-->
Secondary Request to Send
20 DTR CD 108.2
-->
Data Terminal Ready
21 RL RL 140
-->
Remote Loop Control
22 RI CE 125
<--
Ring Indicator
23 DSR CH 111
-->
Data Signal Rate Selector
24 XCK DA 113
-->
Transmit Signal Element Timing
25 TI TM 142
<--
Test Indicator