
  CONST
    nac$gt_user_disconnect = 128,
    nac$gt_layer_disconnect = 0;

  TYPE
    nat$gt_connection_id = integer,

    nat$gt_disconnect_reason = 0 .. 0ff(16),

    nat$gt_connection_status = record
      unacknowledged_data_outstanding: boolean,
      window_open: boolean,
      round_trip_delay: integer {TBD} ,
    recend;
