Thanks Dagwood! That's just the info I was hoping to get. As a matter of fact, I came accross a pinout reference for the 400EM card elsewhere and was just going to post to see if it was correct. It matches the pinout you referenced.

I think I probably have enough info now to take a stab at getting my circuit set up in the new system. I have a couple of variables yet, but I can play with that a little until I get it right.

I left the existing connector attached to the TIE trunk interface, so now that I know the card pinout, I should be able to figure out which pairs are which!

I will post again when I get the circuit running so we can all have a good excuse to have a celebratory cool one. :toast: Thanks again to all for your input!