< draft-ietf-cuss-sip-uui-13.txt		draft-ietf-cuss-sip-uui-14.txt >
	Network Working Group A. Johnston		Network Working Group A. Johnston
	Internet-Draft Avaya		Internet-Draft Avaya
	Intended status: Standards Track J. Rafferty		Intended status: Standards Track J. Rafferty
	Expires: September 4, 2014 Human Communications		Expires: September 7, 2014 Human Communications
	March 3, 2014		March 6, 2014
	A Mechanism for Transporting User to User Call Control Information in		A Mechanism for Transporting User to User Call Control Information in
	SIP		SIP
	draft-ietf-cuss-sip-uui-13		draft-ietf-cuss-sip-uui-14
	Abstract		Abstract
	There is a class of applications which benefit from using SIP to		There is a class of applications which benefit from using SIP to
	exchange User to User Information (UUI) data during session		exchange User to User Information (UUI) data during session
	establishment. This information, known as call control UUI data, is		establishment. This information, known as call control UUI data, is
	a small piece of data inserted by an application initiating the		a small piece of data inserted by an application initiating the
	session, and utilized by an application accepting the session. The		session, and utilized by an application accepting the session. The
	rules which apply for a specific application are defined by a UUI		rules which apply for a specific application are defined by a UUI
	package. This UUI data is opaque to SIP and its function is		package. This UUI data is opaque to SIP and its function is
	skipping to change at page 1, line 41 ¶		skipping to change at page 1, line 41 ¶
	Internet-Drafts are working documents of the Internet Engineering		Internet-Drafts are working documents of the Internet Engineering
	Task Force (IETF). Note that other groups may also distribute		Task Force (IETF). Note that other groups may also distribute
	working documents as Internet-Drafts. The list of current Internet-		working documents as Internet-Drafts. The list of current Internet-
	Drafts is at http://datatracker.ietf.org/drafts/current/.		Drafts is at http://datatracker.ietf.org/drafts/current/.
	Internet-Drafts are draft documents valid for a maximum of six months		Internet-Drafts are draft documents valid for a maximum of six months
	and may be updated, replaced, or obsoleted by other documents at any		and may be updated, replaced, or obsoleted by other documents at any
	time. It is inappropriate to use Internet-Drafts as reference		time. It is inappropriate to use Internet-Drafts as reference
	material or to cite them other than as "work in progress."		material or to cite them other than as "work in progress."
	This Internet-Draft will expire on September 4, 2014.		This Internet-Draft will expire on September 7, 2014.
	Copyright Notice		Copyright Notice
	Copyright (c) 2014 IETF Trust and the persons identified as the		Copyright (c) 2014 IETF Trust and the persons identified as the
	document authors. All rights reserved.		document authors. All rights reserved.
	This document is subject to BCP 78 and the IETF Trust's Legal		This document is subject to BCP 78 and the IETF Trust's Legal
	Provisions Relating to IETF Documents		Provisions Relating to IETF Documents
	(http://trustee.ietf.org/license-info) in effect on the date of		(http://trustee.ietf.org/license-info) in effect on the date of
	publication of this document. Please review these documents		publication of this document. Please review these documents
	skipping to change at page 6, line 24 ¶		skipping to change at page 6, line 24 ¶
	and quoted-string are defined).		and quoted-string are defined).
	UUI = "User-to-User" HCOLON uui-value *(COMMA uui-value)		UUI = "User-to-User" HCOLON uui-value *(COMMA uui-value)
	uui-value = uui-data *(SEMI uui-param)		uui-value = uui-data *(SEMI uui-param)
	uui-data = token / quoted-string		uui-data = token / quoted-string
	uui-param = pkg-param / cont-param / enc-param / generic-param		uui-param = pkg-param / cont-param / enc-param / generic-param
	pkg-param = "purpose" EQUAL pkg-param-value		pkg-param = "purpose" EQUAL pkg-param-value
	pkg-param-value = token		pkg-param-value = token
	cont-param = "content" EQUAL cont-param-value		cont-param = "content" EQUAL cont-param-value
	cont-param-value = token		cont-param-value = token
	enc-param = "content" EQUAL enc-param-value		enc-param = "encoding" EQUAL enc-param-value
	enc-param-value = token / "hex"		enc-param-value = token / "hex"
	The rules for how many User-to-User header fields of each package may		The rules for how many User-to-User header fields of each package may
	be present in a request or a response are defined for each package.		be present in a request or a response are defined for each package.
	Multiple User-to-User header fields MAY be present in a request or		Multiple User-to-User header fields MAY be present in a request or
	response. Consistent with the rules of SIP syntax, the syntax		response. Consistent with the rules of SIP syntax, the syntax
	defined in this document allows any combination of individual User-		defined in this document allows any combination of individual User-
	to-User header fields or User-to-User header fields with multiple		to-User header fields or User-to-User header fields with multiple
	comma separated UUI data elements. Any size limitations on the UUI		comma separated UUI data elements. Any size limitations on the UUI
	data for a particular purpose must be defined by the related UUI		data for a particular purpose must be defined by the related UUI
End of changes. 4 change blocks.
	5 lines changed or deleted		5 lines changed or added
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