The table xdsl2LineSegmentTable contains status parameters of VDSL2/ADSL/ADSL2 and ADSL2+ subcarriers. The parameters in this table are updated when a measurement request is made using the xdsl2LineCmndConfBpsc object. Note that a bits-per-subcarrier measurement is also performed during a line diagnostic procedure. This table provides an additional mechanism to fetch the bits-per-subcarrier data. This additional mechanism is provided so that bits-per-subcarrier data may be fetched without forcing the line into no power state. This is useful because the bits-per-subcarrier allocation may be adjusted at Showtime due to rate adaption and bit swapping. The implementation of this additional mechanism for measuring bits per subcarrier is not mandatory.