[Sipping] I-D ACTION:draft-ietf-sipping-dialogusage-06.txt

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This draft is a work item of the Session Initiation Proposal Investigation Working Group of the IETF.

	Title		: Multiple Dialog Usages in the Session Initiation Protocol
	Author(s)	: R. Sparks
	Filename	: draft-ietf-sipping-dialogusage-06.txt
	Pages		: 29
	Date		: 2007-2-20

Several methods in the Session Initiation Protocol can create an
   association between endpoints known as a dialog.  Some of these
   methods can also create a different, but related, association within
   an existing dialog.  These multiple associations, or dialog usages,
   require carefully coordinated processing as they have independent
   life-cycles, but share common dialog state.  Processing multiple
   dialog usages correctly is not completely understood.  What is
   understood is difficult to implement.
   This memo argues that multiple dialog usages should be avoided.  It
   discusses alternatives to their use and clarifies essential behavior
   for elements that cannot currently avoid them.

   This is an informative document and makes no normative statements of
   any kind.

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