Per its DESCRIPTION, this Counter64 counts P-bit parity errors in the DS3 M-frame overhead, which reflect framing-bit mismatches typically attributable to the far-end signal. Because this row is the short interval still actively filling right now, a reading here means P-bit parity mismatches from the far end have accumulated on this DS3 circuit, and because the interval has not closed yet, the count will keep climbing until it does and rolls into the history table. For example, a reading of 11 events in this bin on this DS3 circuit with the corresponding line-side Cvl staying flat would point the fault toward the far-end equipment rather than this local circuit.