ODU status. The bit positions are: 0 - this interface is in fault 1 - at least one superordinate interface or equipment is in fault 2 - at least one subordinate interface is in fault 3 - superordinate interface or equipment is unassigned 4 - at least one subordinate interface is Inservice or Maintenance 5 - protected - This interface is part of a protection group 6 - at least one superordinate interface is part of a protection group 7 - at least one subordinate interface is part of a protection group 8 - mapped - This interface is part of at least one mapping 9 - at least one superordinate interface is mapped 10 - at least one subordinate interface is mapped 11 - cross-connected - This interface is part of at least one cross-connect 12 - at least one superordinate interface is cross-connected 13 - at least one subordinate interface is cross-connected