I just found this video on how to make an RJ45 to DB9 adapter which makes more sense as my Panasonic Toughbook has a DB9 Serial port.

How to Make a 355A AT&T Avaya Lucent Programming Adapter. Merlin Magix / Legend (and ACS)
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Last edited by DonaldR; 07/29/20 12:13 PM.
"Most people don't have a sense of humor. They think they do, but they don't." --Jonathan Winters