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From: harald.alvestrand@elab-runit.sintef.no
Newsgroups: comp.protocols.iso
Subject: Re: X.224 (Transport) state table question
Keywords: TP0
Message-ID: <1990Aug7.073250.24459@idt.unit.no>
Date: 7 Aug 90 07:32:50 GMT
References: <1990Aug6.111420.13755@idt.unit.no> <1990Aug6.235903.23530@mel.dit.csiro.au>
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Reply-To: harald.alvestrand@elab-runit.sintef.no
Organization: ELAB-RUNIT, SINTEF, Norway
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In article <1990Aug6.235903.23530@mel.dit.csiro.au>, 
ajw@mel.dit.csiro.au (Andrew Waugh) writes:

> Class 0 Transport only uses the implicit variant of normal release
> (see 6.7.1).

Sorry, but no. This bit me too, once.
DRs ARE used in class zero, but ONLY to refuse incoming CRs.
This is done so you can pass the disconnect code, I think.
The procedure in ISO 8073-1986 (I think this has the same numbering as
X.224) is
in chapter 6.6 (connection refusal), not 6.7 (normal release).

So my question, rephrased, is:
After completing the refusal procedure in 6.6.3, when, if ever, should
the responder
disconnect the network connection?

                      Harald Tveit Alvestrand
                      ISO hacker