INT 2F - ZyXEL ZFAX v3+ - SEND VOICE AX = DB21h DS:SI -> filename including path (max 128 characters) DS:BX -> remote phone number Return: AX = status (see #03096) SeeAlso: AX=DB11h,AX=DB20h,AX=DB22h,AX=DB23h,AX=DB24h