O.K. we'll definitely do the upgrade, but is there an order to putting the cards in? We currently have a 2 -port fiber module in the second leftmost slot and I attempted to put a 6-port combo card into the leftmost slot and when I brought the system back up it says there was a wrong conifguration. I had to remove the card to get the system back up. In the two right most full slots there are Trunk cards, and then in the other box (connected with a fiber cable) I have two more trunk models and one blank spot on the rightmost slot. If I have to move these around won't I have to rewire where my phone lines are coming in at? Also I would like to get the T1
card in and set it up before we move to the PRI, but can I do that and keep using the trunk modules until then ?