INT 2F - ZyXEL ZFAX v4.01 - SEND FAX WITH LOGO AND SIGNATURE                    
	AX = DB15h
	DS:SI -> source filename, including path (max 128 characters)
	DS:BX -> remote FAX number
	DS:CX -> Logo filename
	DS:DX -> Signature filename
Return: AX = status (see #03096)
SeeAlso: AX=DB00h"ZFAX",AX=DB11h