its spooky, but we just had this today....first time for me. Did a reboot, no difference....put tester on prot and it came up the same, layer 1 OK but no layer 2...Put tester onto NTE and that worked fine in and out...Mitel tech support says probably faulty card...just for a laugh we reseated the card and bosh, it came back up perfect...so long story short; try reseating the card.