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- Path: sparky!uunet!usc!news.service.uci.edu!ucivax!gateway
- From: jpalme@dsv.su.se (Jacob Palme DSV)
- Subject: How to map conference name in IPM-like headings
- Message-ID: <223795*jpalme@su-kom.dsv.su.se>
- Newsgroups: comp.protocols.iso.x400
- X400-Received: by /PRMD=SUNET/ADMD=_/C=SE/;
- Relayed; 27 Dec 92 12:11:02+0100
- Approved: usenet@q2.ics.uci.edu
- Lines: 76
- Date: 27 Dec 92 11:11:00 GMT
-
- During my work of revision of the ISO/CCITT Group Communication working
- papers, I have come to one very important issue.
-
- Group Communication Contributions are sent to computer conferences,
- just like IPM Messages are sent to users or distribution lists.
-
- How should one then represent the names of the computer conferences
- when transporting a contribution through the MTS.
-
- Alternative 1: Use the existing primary-recipients, copy-recipients
- and blind-copy-recipients heading fields.
-
- Alternative 2: Use a new heading field.
-
- Advantage with alternative 1:
-
- (a) An ordinary MHS UA can input messages to computer conferences.
- The conferences may look like distribution lists to such a user.
-
- (b) An ordinary MHS UA can receive messages coming from computer
- conferences. The conferences may look like distribution lists.
-
- However, (a) and (b) are strictly only necessary conditions for
- the information in the MTS envelope. The content heading might
- use alternative 2, a new heading field when delivering a contribution
- to an MHS UA, but then, of course, the MHS UA will not be able
- to understand this heading field.
-
- (c) An originator might not even have to know whether the ORName
- he is sending a message to is actually an individual, a distribution
- list or a computer conference. And sometimes this would be natural.
- It is not necessary for someone who sends a message to for example
- "The boss of company XYZ" to know whether this company has chosen to
- distribute such incoming messages to a single individual, to a
- distribution list, to a computer conference or to some other kind of
- distribution tool used within that company.
-
- (d) This is more close to IPMmessaging than alternative 2.
-
- Advantage with alternative 2:
-
- (a) It might be neater not to reuse existing fields for not quite the
- same purpose.
-
- (b) A problem with alternative 1 is how to distinguish between
- submissions and accepted contributions to pre-moderated conferences.
- The same message can at some stage of its processing be a submission
- in one of the conferences it is sent to, and be an accepted contri-
- bution in another, so it is necessary to indicate whether the
- contribution is accepted or not on a per-recipient basis. This is
- not easily done using the existing IPM heading syntax.
-
- If alternative 1 is chosen, acceptance information will have to
- be given somewhere else. For example, the DL history in the envelope
- will indicate whether the message arrived from something which in
- MHS terminology looks like a distribution list, but which for group
- communication may represent a group activity to which the contribution
- has been submitted and is resent from.
-
- Another possible solution to the handling of pre-moderated conferences
- is to use IPM forwarding. If this is done, then accepted entries
- in pre-moderaded conferences will have an outer heading, with the
- moderator as originator, and a body part, with the original submission
- as its content. The advantage with doin this is
-
- (a) The problem discussed above disappears
-
- (b) There is no need to modify the original heading of the incoming
- submission, it can be redistributed exactly as it is.
-
- A disadvantage might be that messages coming from computer conferences
- will look less like messages coming from distribution lists to
- ordinary IPM UA-s receiving them.
-
- If anyone has any comments on this, please send them to me!
-
-