Can asterisk say money amounts

I see that asterisk has saynumber and saydigit, but how can we have asterisk say money like if i want asterisk to speak $500.50, it would say Five Hundred Dollars and Fifty cents. Is there any add-on to this? Is it supported?

I’m looking for this too. Does anyone know of a solution for this? The best I know so far is using the festival text to speech and inserting variables, but it sounds pretty choppy.