This read-write value bulk-deletes all entries in the Cross Connect table when set to clear(3); it reads back inprogress(2) while the deletion is underway and idle(1) once complete or when no operation is running, and it can only be set to clear (never directly to idle or inprogress). Admins use it to wipe the entire cross-connect configuration at once rather than deleting entries individually, useful when reconfiguring a device from scratch. An admin decommissioning all existing DS0 cross-connects before a fresh provisioning pass would set this to clear(3), then poll it until it returns to idle(1) to confirm the bulk deletion finished.