I can change spline with points seted to bezier or smooth to spline with just straight segments based on bezier angle? Hope you can understand me.

I'm not quite sure what you mean, but give the convert or resample tools a go.

To get the set of connected control points for a nurbs or bezier curve, use a convert with “convert to” polys, and “Interpolate through Hulls” enabled.

If you want the points to lie on the curve, either use the resample sop to generate evenly spaced points, or the convert sop (“Interpolate through Hulls” disabled) to space them out based on the curve divisions.