Nullmodem (25-25)

From HwB

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

Pinout

Dsub25f.png

25 PIN D-SUB FEMALE to Computer 1.

Dsub25f.png

25 PIN D-SUB FEMALE to Computer 2.

D-Sub 1 D-Sub 2
Receive Data 3 2 Transmit Data
Transmit Data 2 3 Receive Data
Data Terminal Ready 20 6+8 Data Set Ready + Carrier Detect
System Ground 7 7 System Ground
Data Set Ready + Carrier Detect 6+8 20 Data Terminal Ready
Request to Send 4 5 Clear to Send
Clear to Send 5 4 Request to Send

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

Contributions

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