Nullmodem (25-25) cable
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Nullmodem (25-25) cable

pinout

Use this cable between two DTE devices (for instance two computers)

25 pin D-SUB female
25 pin D-SUB female connector  to the Computer 1
D-Sub 1 D-Sub 2
Receive Data32Transmit Data
Transmit Data23Receive Data
Data Terminal Ready206+8Data Set Ready + Carrier Detect
System Ground77System Ground
Data Set Ready + Carrier Detect6+820Data Terminal Ready
Request to Send45Clear to Send
Clear to Send54Request to Send

Note: DSR & CD are jumpered to fool the programs to think that they are online.

25 pin D-SUB female
25 pin D-SUB female connector  to the Computer 2

Source:www.pinouts.ru


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