Subject: Basic Conversation and OSI TP

From: [email-masked]
Date: Thu, 10 Mar 94 08:30:50 +0100

John,

Thanks for your answer to my problem.

>      The answer is that the implementation sends the contents of the
> user buffer using as many UD-TRANSFER-requests as it needs. To the lower
> layers the LLs are just part of the user's data and no special
> significance can be assigned to them. However, being as this whole
> process is not seen by the CPI-C user, I'm not sure that any change is
> needed to the CPI-C document.

The main point is, that the LLs are just part of the user's data. I always
had an other understanding of basic conversation with OSI TP: I thought
that the CRM has to delete the LLs from the user's data.
(This was the background for the X/Open CR SNI-12).

Of course this whole process is not seen by the CPI-C user. But the
CPI-C document (especially the appendix D) is also a document for
implementers.

May be that the CPI-C document is clear in this point and it was only my
misunderstanding, but it may be that someone other has the same
misunderstanding. Therefore I suggest to add the following note to
the end of table D-14:

The buffer specified by the buffer and send_length parameters of the
CMSEND call maps exactly to the User-Data of the UD-TRANSFER request,
independent of the value of conversation_type.

Regards
Peter

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Peter Binninger                         Voice: (+49) 7531-87-4758
Computer Gesellschaft Konstanz mbH      Fax:   (+49) 7531-87-4888
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