I have a customer w/an old Legend system (rel. 2 processor) that is having a problem with their analog ports. Just about every other time you go off hook and try to dial you can't break dial tone. They have 3 12port cards in the system and all of them are doing it, every port. Was thinking of just going into maintenance and resetting/busy-out/restore each card. Other option obviously is to just cold start the whole switch, but I absolutely hate doing that on such an old system. Any thoughts?