Hardware pinouts information and cables schemes

Two-Wire modem (9-25) cable pinout

serial interface cable

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This cable should be used for DTE to DCE (for instance computer to modem) connections without hardware handshaking.

9 pin D-SUB female connector layout

9 pin D-SUB female connector
to the Computer



Female Male Dir
Shield Ground 1 
Transmit Data32-->
Receive Data23<--
System Ground57 
    
Jumper these:   
Request to Send7 -->
Clear to Send8 <--
    
Data Set Ready6 <--
Carrier Detect1 <--
Data Terminal Ready4 -->
    
Request to Send 4-->
Clear to Send 5<--
    
Data Set Ready 6<--
Carrier Detect 8<--
Data Terminal Ready 20-->


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25 pin D-SUB male connector diagram

25 pin D-SUB male connector
to the Modem

Pinouts.ru > Serial interfaces cables and converters schemes listing >  Pinout of Two-Wire modem (9-25) cable and layout of 9 pin D-SUB female connector and 25 pin D-SUB male connector
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