fastStart element in all Q.931 messages up to and including Connect

Bob Gilman rrg at AVAYA.COM
Wed Nov 1 12:03:02 EST 2000


Francois and Paul -
I agree with François' change to "shall react to the first
fastStart element", but I would suggest that "ignore" be
replaced by "may ignore" for any subsequent fastStart elements.
(If a called endpoint changes fastStart elements in mid-stream,
then it's the caller's choice whether it reacts or not.)
BTW, doesn't this overlap with the redirection problem in which
we perhaps should say that the called endpoint "shall" react to
any subsequent [different] fastStart element?
-Bob
----------------------------------------------------
Bob Gilman       rrg at avaya.com      +1 303 538 3868


       ----- Original Message -----
       From: Francois Audet
       To: h323implementors
       Sent: Tuesday, October 31, 2000 1:32 PM
       Subject: RE: fastStart element in all Q.931 messages up to and including
C onnect

       Change the should to a shall then:

            The called endpoint accepts a proposed channel by returning the
corresponding
            OpenLogicalChannel structure in a Q.931 message sent in response to
Setup, up to and including Connect.
            <NEW>A called endpoint may choose to repeat the exact same fastStart
element in all subsequent message up to
            and including Connect. Calling endpoints shall react to the first
fastStart element received in a response message
            to the Setup message and ignore any eventual subsequent fastStart
elements.

       If somebody manages to get it wrong after that, they deserve to be taken
out of business.

       I completely disagree with your assertion that we must choose either one
or many. Currently some implementations send one,
       others send many, and we don't see interoperability problems.

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