Your suggestion helped but did not solve the problem. Went from 3 hellos plus pauses to being heard on the 2nd hello.
Ring, ring, see the call pop up on screen, slide to answer, slight pause to verify the phone answered, hold to ear, hello, nothing hello? and I was heard.
Better, but not perfect. I could live with it if I have to.
Think I may flash through a few roms this weekend and then return to this one. See if it solves itself the rest of the way with another rom.