Two-Wire 9 to 25 Pin

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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 9 PIN D-SUB FEMALE to the Computer

25 PIN D-SUB MALE 25 PIN D-SUB MALE to the Modem

Female Male Dir
Shield Ground 1
Transmit Data 3 2 OUT
Receive Data 2 3 IN
System Ground 5 7
Jumper these:
Request to Send 7 OUT
Clear to Send 8 IN
Data Set Ready 6 IN
Carrier Detect 1 IN
Data Terminal Ready 4 OUT
Request to Send 4 OUT
Clear to Send 5 IN
Data Set Ready 6 IN
Carrier Detect 8 IN
Data Terminal Ready 20 OUT

References

Category:Modem Cables

 

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