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            | 信号 | ピン |  | ピン | 信号 |  
            | GND | 1 |  | 20 | Receiver TP Common |  
            | Signal Rate Indicator | 2 | 21 | GND |  
            |  | 3 | 22 | Send Data TP Return |  
            | SD | 4 | 23 | GND |  
            | Send Timing | 5 | 24 | GND |  
            | RD | 6 | 25 | RTS TP Return |  
            | RTS | 7 | 26 | Recive Timing TP Return |  
            | Reciver Ready | 8 | 27 | CTS TP Return |  
            | CTS | 9 | 28 | Terminal In Service |  
            | Local Loopback | 10 | 29 | Data Mode TP Return |  
            | Data Modem | 11 | 30 | Termina Ready TP Return |  
            | Terminal Ready | 12 | 31 | Reciver Ready TP Return |  
            | Reciver Ready | 13 | 32 | Select Standby |  
            | Remote Loopback | 14 | 33 | Signal Quality |  
            | Incomming Call | 15 | 34 | New Signal |  
            | Select Freq/Select Rate | 16 | 35 | Terminal Timing TP Return |  
            | Terminal Timing | 17 | 36 | Standby Indicator |  
            | Test Mode | 18 | 37 | Send TP Common |  
            | GND | 19 |  |  
            | DSUB37ピン |  |