Two-Wire Modem (9-25)

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

 (la Computer).
 (la Modem).

9 PIN D-SUB FEMALE de la Computer
25 PIN D-SUB MALE de la Modem

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