Quatech Asynchronous Communications Adapter QSCLP-100 - Manual (Page 23)

The QSCLP-100 is a DTE device which connects to peripheral equipment
through a single female D-44 connector, or using the adapter cable, four male D-9
connectors. The standard serial port connections are listed in Figure 17.
5 30 5 26 5 8 5 19 GND
9 18 9 22 9 25 9 29 RI
1 33 1 37 1 41 1 44 DCD
6 16 6 20 6 23 6 27 DSR
4 17 4 21 4 24 4 28 DTR
8 32 8 36 8 40 8 43 CTS
7 3 7 7 7 11 7 14 RTS
2 31 2 35 2 39 2 42 RxD
3 2 3 6 3 10 3 13 TxD
D-9 D-44 D-9 D-44 D-9 D-44 D-9 D-44
Port 4 Port 3 Port 2 Port 1
RS-232
Signal
Figure 18 --- QSCLP-100 connector pinouts
22 QSCLP-100 User's Manual