Piedinature - Pinouts
Nullmodem 25 to 25 Pin Cable

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

25 PIN D-SUB FEMALE (To Computer 1).

(To Computer 2).

25 PIN D-SUB FEMALE to Computer 1.
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.

Piedinature - PinoutsNullmodem 25 to 25 Pin Cable