This read-only PerfTotalCount reports the count of aborted frames received on the DSL port, scoped to the running total for the current calendar day so far. Operationally, aborted frames indicate the far end deliberately or accidentally cut a frame short mid-transmission, a sign of link instability. For example, watching today's running aborted-frame count climb over the course of the day helps an admin judge whether a morning fix attempt actually stopped the problem.