Sorry not a bike question - RS232 lead

[Bluecray]

Quick question I'm making up a unique 9 pin to RS232 25 pin lead for our laptop - CNC lathe /mill at work.

For a 25 pin RS232 to 25 pin RS232 moulded lead how is it wired up?  Are all 25 pins wired as 1 to 1,  2 to 2, 3 to 3 etc???


Thanks