Check the TDM flex cable. If it is connected A-B then the last card in the system would appear as the first.Check the direction of the flex cable. It should be B-A.NOTE: To test individual process cards, Pull all the cards out of the system except the core and connect the interface. See if the interface is seen and works correctly. Then reinstall each HD process card one at a time. This makes sure to eliminate the possibility of a Bad Flex cable.