Here's the update so if anyone has any input feel free.

Monday: I arrived onsite at 7:45 am with the DCS compact programmed up and cabled for a quick swap out. AT&T wasn't onsite.

The 7100 was quiet as a mouse, I punched 701-704 for DT all good and clean, I sat there from 7:45am until 9:00am watching all the incoming and outgoing calls, since everything was working perfect I decided not to move anything over to the Compact, half thinking that AT&T worked the trouble out over the weekend.

I told the customer that they were still on the Original "New" system and since everything was working that I would go do another job and to call me if it flips out again.

11:50am: I get the call that the lines are going crazy etc so I head back to the customer site.

12:30PM: I walk into the building and asked if the phones were still going nuts and they reply Yep.

it took me less than 10 minutes to move everything over to the compact, all the lines are up and working normal and I wait to see if they flip out...nothing

I sat there from 12:45pm until 3:30pm and the 6 year old compact system worked perfect so while I waited, I blasted the 7100 with 4 analog ports from the compact and it seemed to be working fine too, I also copied the alarm report from the 7100, here's a portion:

MNF06 11/14/2008 14:24:27 Trunk Disconnect C1-S02-P03
MNF07 11/14/2008 14:33:09 Trunk Connect C1-S02-P04
MNF07 11/14/2008 15:08:59 Trunk Connect C1-S02-P03
MNF06 11/14/2008 15:27:40 Trunk Disconnect C1-S02-P03
MNF06 11/14/2008 15:27:54 Trunk Disconnect C1-S02-P03
MNF07 11/14/2008 15:29:55 Trunk Connect C1-S02-P03
MNF06 11/17/2008 08:02:56 Trunk Disconnect C1-S02-P02
MNF06 11/17/2008 08:03:00 Trunk Disconnect C1-S02-P02
MNF07 11/17/2008 08:03:24 Trunk Connect C1-S02-P02
MNF06 11/17/2008 12:58:06 Trunk Disconnect C1-S02-P01
MNF07 11/17/2008 12:59:57 Trunk Connect C1-S02-P01
Could these alarms just be me unplugging DT etc.?

If you notice that there is nothing happening at all on the 15th SAT or the 16th SUN when they are closed.

Also while I waited I had a new 4trm overnighted
and cleared the media card, defaulted the 7100 and uploaded the programming back in.

As it stands now the compact is still the working system, but I'm a little less than confident at this point that the new 4TRM will solve the problem.

any ideas?