Table 2 DIN-8 pin assignments DIN-8 Corresponding Pin DB-25 Pin Signal Function ----------------------------------------------- 3 2 TD Transmitted data 5 3 RD Received data 6 4 RTS Request to send 2 5 CTS Clear to send 4,8 7 SG Signal ground 7 8 DCD Data carrier detect 1 20 DTR Data terminal ready