CTS archive files produced by the 6.7.1 release of the DSP have a CTS version number of 1.6.
CTS archive files produced by the 6.5.6 release of the DSP have a CTS version number of 1.6.
CTS archive files produced by the 6.3.1 release of the DSP have a CTS version number of 1.6.
Note, CTS version number is required to match when transporting CTS packages across instances of DSP/ADM/ISA.