The Fault Tolerant ATM Port Statistics object is a child of the Fault Tolerant ATM Port object. There is an instance of the Fault Tolerant ATM Port Statistics object below each Fault Tolerant ATM Port object. The Fault Tolerant ATM Port Statistics object does not have any fields or pushbuttons, and you cannot configure or manage it. It exists simply as a way of grouping its 'Summary period' child objects.