ok so ran into a situation where we had to run a serial printer from a good 40 feet so we layed down a cat 5 wire and decided to map the pinouts of the factory cable to see if we could get it to run on the cat 5. we succeeded and the pinouts are below:

DB25     Signal Name     DB9     Signal Name

12          CD                    4          DTR

3            RD                   3           TD

2            TD                    2           RD

20          DTR                 6            DSR

7            Ground            5            Ground

this works when hardware handshakes are set to DSR only

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