9 PIN D-SUB FEMALE to the Computer
25 PIN D-SUB MALE to the Modem
Female Male Dir
Shield 1
Transmit Data 3 2
Receive Data 2 3
Request to Send 7 4
Clear to Send 8 5
Data Set Ready 6 6
System Ground 5 7
Carrier Detect 1 8
Data Terminal Ready 4 20
Ring Indicator 9 22