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)