Re: Fax processing confirmation

[Dan Wing <dwing@xxxxxxxxx>]

On Wed, 14 Feb 2001 19:26 +0900, MAEDA toru wrote:

> Hi, Folks
> 
> I want discuss about the Fax processing confirmation for
> which I asked to issue the Internet Draft in ITU-T SG16
> meeting last November.
> 
> The notification of success/failure of document
> processing and page by page status are very important
> feature for not only the classic fax but also the internet fax.

If "internet fax" is:

  1)

   scanner -> ifax ------------> ifax -> printer
                       ^
                       ^
                      SMTP

how would page-by-page confirmation be useful?  The only way a page could
fail is if the printer jammed or ran out of paper or the receiving ifax
crashed or lost power.  All of these are exceptional conditions and are
solved with buffering in the ifax, UPS (uninterruptable power supply) --
that is, they're solved today with traditional fax machines.

I don't see a need for page-by-page confirmation unless there is a
transmission over analog lines -- such as over PSTN.

If you see a need for page-by-page confirmation, please provide a scenario
where a specific intermediate page could fail when the protcols involved
are TCP and SMTP.

-Dan Wing

> My idea is to add Fax-Report field in the MDN extension
> field as follows.
>
> MDN extension field:
> Fax-Report: Fax-Results = code
>            ; Fax-Pages = received page number
>            ; Fax-Errorpage = error page number
> 
> After we agreed to add the filed, the field will be registered to
> IANA under the registration procedure written in RFC2434.
> 
> There will be another method to add the Fax processing
> confirmation in MDN.
> 
> Your comments are well come,
> 
> Toru Maeda
> 
> 
> --------------------
> MAEDA TORU
> MIE Development Div. 2
> CANON Inc.
> --------------------
>