This 64-bit counter tallies an SRP-specific framing anomaly seen on frames from the ring fiber: an empty packet carrying a valid Start-Of-Packet signal that still ends up producing an incorrect CRC, over the current, still-running 15-minute window. This is a fairly specific low-level ring-signaling glitch rather than a generic corruption event, so it points more toward an SRP framer/ASIC issue on this or a neighboring ring node than toward ordinary cabling noise. A steady low background rate of a handful of these per interval on an otherwise healthy ring can often be tolerated, but a sudden order-of-magnitude jump would warrant checking the ring's framer hardware on this or an adjacent node.