INT 2F - Communicating Applications SpecificationDCA and Intel's standard programmatic interface for sending and receiving FAXes via any of a number of internal FAX boards. - GET/SET AUTORECEIVE
	AX = CB0Fh
	DL = subfunction
	    00h get current autoreceive state
	    01h set autoreceive state
		DH = number of rings before answer, 00h = never
Return: AX = 0000h autoreceive disabled
	AX = N	   number of rings before answer
	AX < 0	   error code (see #03048)