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pinout (распиновка)

Two-Wire Modem (25-25) Cable

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


25 pin D-SUB FEMALE connector  to the Computer
Female Male Dir
Shield Ground 1 1 
Transmit Data 2 2 -->
Receive Data 3 3 <--
System Ground 7 7 
    
Jumper these:   
Request to Send 4  -->
Clear to Send 5  <--
    
Data Set Ready 6  <--
Carrier Detect 8  <--
Data Terminal Ready 20   -->
    
Request to Send   4 -->
Clear to Send   5 <--
    
Data Set Ready   6 <--
Carrier Detect   8 <--
Data Terminal Ready   20 -->

25 pin D-SUB MALE connector  to the Modem

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