I normally start the conversation with the "talent agent" or "technical recruiting specialist" with some pleasantries and then: "Before we get to deep into this and I waste your time, my expected minimum salary is $X. Is that inline with what you are willing to offer your ideal candidate?"

That way I am being the magnanimous one in not wasting THEIR time, and they can't come back with well our salary ranges are based on experience blah blah blah.

Do I leave money on the table by showing my number first? Possibly, but I know what I need to live my semi-extravagant, travel-filled life, and still save.