Ethereal-dev: Re: [Ethereal-dev] Questions about Connection Oriented SCCP

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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Wed, 8 Oct 2003 00:11:16 -0700
On Tue, Oct 07, 2003 at 01:37:41PM -0700, Michael Lum wrote:
> OK, a given MTP3 point code pair, SSN=142 (RANAP), and the associated
> SLR/DLR defines a conversation.  We can associate a dissector with that
> conversation.

Why would the SSN be needed to define the conversation? Can there be
more than one SSN used in a connection? If so, how do you know how to
dissect the payload of packets lacking an SSN?

> SCCP Release Complete MTP3 [OPC=X, DPC=Y, SLR=A, DLR=B] or [OPC=Y, DPC=X,
> SLR=B, DLR=A]
> 	end of conversation

Note that, currently, conversations have no notion of a beginning or
end; we could add one, along the lines of what we do for "circuits".