Indicates the granularity (minimum slice size multiple) of the card Wavelength Selective Switch(es). If tnFlexgridOtsInfoLineWssIsFlexgrid is true, the upper frequency edge of a slice aligns with reference 193.1 THz for n=0 (ITU G.694.1). If tnFlexgridOtsInfoLineWssIsFlexgrid is false, the granularity is the channel slot width centered on the regular ITU grid implied by the granularity. Values in MHz. Should be displayed in user interfaces in GHz. Defval: CWR8 = 100000 CWR8-88 = 50000 WR2-88 = 50000 WR8-88A = 50000 WR8-88AF = 12500 WR20-TF = 6250 WR20-TFM = 6250 WR20TFML = 6250 IROADM = 50000