IFX Mail Archive: RE: IFX> FW: [Another take on IPP Fax from

IFX Mail Archive: RE: IFX> FW: [Another take on IPP Fax from

RE: IFX> FW: [Another take on IPP Fax from Terry Brookes]

From: Zehler, Peter (PZehler@crt.xerox.com)
Date: Mon Jul 09 2001 - 11:33:15 EDT

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    Terry,

    A couple of comments on your comments:

    >IPP also requires infrastructure in the form of IPP servers, so it may not
    >meet the stated requirements of 'using existing infrastructure'.

    IPP does not require "IPP servers" IPP only has "Printers" "Clients" and
    "Jobs". The only thing that matches an "IPP server" would be an IPP
    Printer. I would not consider an IPP Printer a part of the infrastructure.
    IPP uses components such as HTTP, Security, firewalls and registered MIME
    types for content description. These I would consider infrastructure. All
    of these existing technologies are used without any IPP specific
    modifications. Any FAX exchange requires similar components at both ends
    regardless of the transport scheme.

    >Nope, think it's great and would like to see a URI on every business card,
    >but from a business standpoint it doesn't look like a very good way of
    >meeting Mr Maeda's requirements. As far as I can tell he's looking for a
    way
    >to use the popularity of e-mail as the basis for a simple low cost T30-like

    >internet fax machine to replace the 100 million or so traditional fax
    >machines in use. There are estimated to be half a billion fax users, this,
    >presumably, is the target market. I believe its a reasonable assumption
    that
    >a very large proportion of these users now have e-mail addresses; a rapidly

    >growing number use Instant Messaging ( a number which will accelerate
    >dramaticaly when Windows XP appears); but only a very small and exclusive
    >group (the IPP developers ? printer manufacturers ?) appears to have any
    >knowledge whatsoever of IPP. From a technical standpoint Dan's proposal of
    >IPP may be OK, from a marketing standpoint it doesn't look like a very good

    >idea because the user won't have anyone to send to, because, despite the
    >valiant efforts of IPP people, hardly anyone actualy uses it. IM could (not

    >would!) be a better bet on the basis that it could work very much like T30
    >AND have a large number of people already using it. Not IMPP, which the
    Blue
    >Window Software Corporation (Redmond WA) is in the process of killing, but
    >Windows IM which will probably be the de facto IM standard by the time Mr
    >Maeda's machine is ready for production.
    >My own belief is that FOIP will only be successfull if it's as easy to use
    >as a regular fax machine. POP/SMTP has proved to be much too complex to set

    >up, IPP doesn't have a user base even if it *is* imbedded in every printer,

    >so maybe IM will be the answer...who knows?

    I contend that only a small number of FAX users know anything about ITU
    specifications and many don't know the meaning of TIFF. I doubt your
    average email user is very familiar with SMTP or POP-3. Anyone sending a
    traditional FAX or email does know the phone number or email address of the
    recipient.
    I believe there is a business case for ifax and IPP FAX. Ask marketing/end
    users if they would be interested in
    1) Sending a FAX around the world through their Internet service provider
    avoiding long distance phone charges.
    2) Sending a FAX without encountering a "busy signal".
    3) Sending a FAX securely with mutual authentication and encryption.
    4) Having the capability of negotiating to a higher fidelity of output.
    5) Faxing directly from an application with the best resolution available at
    the printer.
    6) Receiving confirmation similar to or beyond traditional FAX (i.e.
    reception and printed).
    7) Having a single device that is connected to both the Internet and the
    phone line capable of sending and receiving FAXs via traditional FAX, ifax
    or IPP FAX based on availability.

    With ifax and IPP FAX we are met with the classic chicken and egg problem.
    At least one side has to be built first. Hopefully the other side will soon
    follow.

    IPP has a track record of interoperability across vendor implementations for
    clients and printers. I expect the FAX profile for IPP to meet similar
    success.

    By the way, user of Windows XP have IPP Client capability out of the box
    just as Windows 2000 users do. Why would IPP have much of a user base even
    though it is available in printers and in Windows given that most printing
    is done locally and traditional methods are the easiest to set up in
    Windows. ("where do we want you to go today?") Windows also have the
    capability of acting as IPP Printers.

    Pete

                                    Peter Zehler
                                    XEROX
                                    Xerox Architecture Center
                                    Email: PZehler@crt.xerox.com
                                    Voice: (716) 265-8755
                                    FAX: (716) 265-8792
                                    US Mail: Peter Zehler
                                                    Xerox Corp.
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                                                    Webster NY, 14580-9701

    -----Original Message-----
    From: Terry Brookes [mailto:brookes_terry@hotmail.com]
    Sent: Thursday, July 05, 2001 6:34 AM
    To: imcdonald@sharplabs.com; dwing@cisco.com
    Cc: ietf-fax@imc.org; maeda@crf.canon.fr; dcrocker@brandenburg.com
    Subject: RE: I-D ACTION:draft-ietf-fax-terminal-mode-goals-00.txt

    Hi Ira,

    >Do you just dislike IPP?
    Nope, think it's great and would like to see a URI on every business card,
    but from a business standpoint it doesn't look like a very good way of
    meeting Mr Maeda's requirements. As far as I can tell he's looking for a way

    to use the popularity of e-mail as the basis for a simple low cost T30-like
    internet fax machine to replace the 100 million or so traditional fax
    machines in use. There are estimated to be half a billion fax users, this,
    presumably, is the target market. I believe its a reasonable assumption that

    a very large proportion of these users now have e-mail addresses; a rapidly
    growing number use Instant Messaging ( a number which will accelerate
    dramaticaly when Windows XP appears); but only a very small and exclusive
    group (the IPP developers ? printer manufacturers ?) appears to have any
    knowledge whatsoever of IPP. From a technical standpoint Dan's proposal of
    IPP may be OK, from a marketing standpoint it doesn't look like a very good
    idea because the user won't have anyone to send to, because, despite the
    valiant efforts of IPP people, hardly anyone actualy uses it. IM could (not
    would!) be a better bet on the basis that it could work very much like T30
    AND have a large number of people already using it. Not IMPP, which the Blue

    Window Software Corporation (Redmond WA) is in the process of killing, but
    Windows IM which will probably be the de facto IM standard by the time Mr
    Maeda's machine is ready for production.
    My own belief is that FOIP will only be successfull if it's as easy to use
    as a regular fax machine. POP/SMTP has proved to be much too complex to set
    up, IPP doesn't have a user base even if it *is* imbedded in every printer,
    so maybe IM will be the answer...who knows?

    Terry

    >From: "McDonald, Ira" <imcdonald@sharplabs.com>
    >To: "'Terry Brookes'" <brookes_terry@hotmail.com>, dwing@cisco.com
    >CC: ietf-fax@imc.org, maeda@crf.canon.fr, dcrocker@brandenburg.com
    >Subject: RE: I-D ACTION:draft-ietf-fax-terminal-mode-goals-00.txt
    >Date: Tue, 3 Jul 2001 10:27:47 -0700
    >
    >
    >Hi Terry,
    >
    >Do you just dislike IPP?
    >
    >For IPP Fax to work, IPP does NOT need to be ubiquitous. It just
    >needs to be ubiquitous in deployed PRINTERS. Very few printers
    >shipped in calendar 2001 that did not have IPP protocol support.
    >Probably NONE will ship in calendar 2002 without IPP protocol
    >support.
    >
    >I agree that SMTP is ubiquitous, but it doesn't (and can't ever)
    >do realtime capabilities negotiation, by its very nature.
    >
    >Certainly such protocols as IMPP (your suggestion) are utterly
    >inappropriate for sending large documents by VALUE (like IPP)
    >and not by REFERENCE.
    >
    >Could you explain your implacable opposition to IPP Fax, please?
    >
    >Cheers,
    >- Ira McDonald, consulting architect at Sharp and Xerox
    > High North Inc
    >
    >
    >-----Original Message-----
    >From: Terry Brookes [mailto:brookes_terry@hotmail.com]
    >Sent: Tuesday, July 03, 2001 8:30 AM
    >To: dwing@cisco.com
    >Cc: ietf-fax@imc.org; maeda@crf.canon.fr; dcrocker@brandenburg.com
    >Subject: RE: I-D ACTION:draft-ietf-fax-terminal-mode-goals-00.txt
    >
    >
    >
    >Hi
    >I'd re-phrase the following-
    > >IPP exists. <
    >
    >This would be more accurate-
    > >IPP barely exists<
    >
    >Also 'IPP FAX' certainly does NOT exist...yet.
    >
    >IPP also requires infrastrucure in the form of IPP servers, so it may not
    >meet the stated requirements of 'using existing infrastructure'.
    >
    >If SMTP really doesn't work for fax terminal mode then strategicaly the new
    >Windows Instant Messenger could be a much better bet. It's likely to become
    >a de facto standard for the non-AOL IM's, and with IM you get an instant
    >response that should allow replication of T30 with great simplicity. You
    >also get SIP with Windows IM, which could allow discovery of the
    >capabilities of the receiving fax terminal, probably even give you the
    >color
    >
    >of the operator's hair.
    >
    >Terry Brookes
    >www.polyteq.com
    >
    >
    >
    > >From: "Dan Wing" <dwing@cisco.com>
    > >To: "Dave Crocker" <dcrocker@brandenburg.com>
    > >CC: "MAEDA Toru" <maeda@crf.canon.fr>, <ietf-fax@imc.org>
    > >Subject: RE: I-D ACTION:draft-ietf-fax-terminal-mode-goals-00.txt
    > >Date: Sat, 30 Jun 2001 17:42:39 -0700
    > >
    > >
    > >Yes, shared code is good.
    > >
    > >"Fax terminal mode" is an end-to-end service which has much more in
    >common
    > >with PSTN fax and T.38 fax than the SMTP model of multiple hops, storing
    > >mail,
    > >mailing lists, etc.
    > >
    > >IPP has more in common with transmitting documents than SMTP, and I still
    > >say
    > >that IPP can provide something more closer approaching the goals of "fax
    > >terminal mode" than SMTP.
    > >
    > >For universal messaging, T.37/RFC2305 is the way to go. For duplication
    >of
    > >exact fax functionality on an IP network, T.38 is the way to go. While
    > >T.38
    > >is more difficult than an IETF text-based protocol, forcing SMTP to
    > >essentially do 'SAML' (everyone by Dave, see RFC821 for a description of
    > >SAML)
    > >across multiple hops is hard.
    > >
    > >If you want something easier than T.38, IPP exists. IPP can be enhanced
    >as
    > >needed to support the features necessary to replicate fax.
    > >
    > >-d
    > >
    > > > -----Original Message-----
    > > > From: Dave Crocker [mailto:dcrocker@brandenburg.com]
    > > > Sent: Saturday, June 30, 2001 7:55 AM
    > > > To: Dan Wing
    > > > Cc: MAEDA Toru; ietf-fax@imc.org
    > > > Subject: RE: I-D ACTION:draft-ietf-fax-terminal-mode-goals-00.txt
    > > >
    > > >
    > > > At 01:39 PM 6/28/2001, Dan Wing wrote:
    > > > >I'm unclear on why the ability to fallback requires the original
    > > > attempt be in
    > > > >SMTP.
    > > >
    > > >
    > > > The more the modes have in common, the more code they share. That
    >means
    > > > that the different modes have less to implement.
    > > >
    > > > There also might be operational impact, such as retaining an SMTP
    > > > connection.
    > > >
    > > > Retaining interworking with email continues to be a nice ability, too.
    > > >
    > > > It also makes it easier to evaluate the efficacy of each, different
    > > > mode. The fewer modes the better/simpler.
    > > >
    > > > d/
    > > >
    > > > ----------
    > > > Dave Crocker <mailto:dcrocker@brandenburg.com>
    > > > Brandenburg InternetWorking <http://www.brandenburg.com>
    > > > tel +1.408.246.8253; fax +1.408.273.6464
    > > >
    > >
    >
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