[IPP] Impressions vs. images for IPP FaxOut service

[IPP] Impressions vs. images for IPP FaxOut service

[IPP] Impressions vs. images for IPP FaxOut service

Ira McDonald blueroofmusic at gmail.com
Wed Nov 2 00:56:40 UTC 2011

Hi Mike,

My two cents:

Define new job-images[-completed] attributes, to align
w/ SM.

Also, Copy Service (and possibly other future services)
have both images (input) and impressions (output) work

Of course, Scan/FaxIn/etc. need images work counters.

- Ira,

Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
Secretary - IEEE-ISTO Printer Working Group
Chair - TCG Embedded Systems Hardcopy SG
IETF Designated Expert - IPP & Printer MIB
Blue Roof Music/High North Inc
mailto:blueroofmusic at gmail.com
Winter  579 Park Place  Saline, MI  48176  734-944-0094
Summer  PO Box 221  Grand Marais, MI 49839  906-494-2434

On Tue, Nov 1, 2011 at 8:20 PM, Michael Sweet <msweet at apple.com> wrote:

> All,
> As I continue to sift through the minutes from the October 2011 F2F, I saw
> that we decided to normatively reference the 5106.1 definition of
> impressions for IPP and the Semantic Model going forward.
> However, for FaxOut (and potentially other IPP service bindings, should we
> do them) the existing job-impressions/-completed attributes would not
> apply.  Section 7.1 of 5106.1 has the following to say about impressions:
> The relationships in this section are common to all services that contain
> the associated counters. For example the relationship for Impression
> applies to Copy, EmailIn, FaxIn, NetworkFaxIn, Print and SystemTotals
> because “impressions” is applicable to these services The relationship for
> Impression does not apply to EmailOut, FaxOut, NetworkFaxOut, Scan or
> Transform because “impressions” is not applicable to these services.
> Presumably we should report and count images instead, however IPP has
> never defined image counter attributes (e.g. there are no
> job-images/-completed attributes).
> Should I:
> 1. Add new job-images and job-images-completed Job Description attributes
> for FaxOut. This would preserve a closer 1-to-1 mapping with the Semantic
> Model.
> or:
> 2. Redefine job-impressions and job-impressions-completed to be images for
> FaxOut and other image-based services. This would make FaxOut closer to
> Print from a Client perspective, and existing code to report progress or do
> accounting would work without changes.
> Thoughts?
> _________________________________________________________
> Michael Sweet, Senior Printing System Engineer, PWG Chair
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