Selecting an Interface Cable 102
The V.24 InterfaceThe V.24 interface pin-out diagram and signal definitions and names are shown below.
Pin # Signal Name Direction CCITT #
1 PGND Protective Ground Common 101
2 TXD Transmit Data Output 103
3 RXD Receive Data Input 104
4 RTS Request to Send Output 105
5 CTS Clear to Send Input 106
6 DSR Data Set Ready Input 107
7 SGND Signal Ground Common 102
8 DCD Data Carrier Detect Input 109
15 TCLK Transmit Clock (DCE) Input 114
17 RCLK Receive Clock Input 115
18 TEST Local Loopback Activation Output 141
20 DTR Data Terminal Ready Output 108
21 RLB Remote Loopback Output 140
22 RI Ring Indicator Input 125
24 DTECLK Transmit Clock (DTE) Output 113
25 TI Test Indicator Input 142