I-D ACTION:draft-rosenberg-sip-app-media-tag-01.txt

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	Title		: A Session Initiation Protocol (SIP) Media Feature Tag for MIME Application Sub-Types
	Author(s)	: J. Rosenberg
	Filename	: draft-rosenberg-sip-app-media-tag-01.txt
	Pages		: 8
	Date		: 2007-7-12
	
The caller preferences specification for the Session Initiation
   Protocol (SIP) allows a caller to express preferences that the call
   be routed to a User Agent (UA) with particular capabilities.
   Similarly, a specification exists to allow a UA to indicate its
   capabilities in a registration.  Amongst those capabilities are the
   type of media streams the agent supports, described as top-level MIME
   types.  The 'application' MIME type is used to describe a broad range
   of stream types, and provides insufficient granularity as a
   capability.  This specification allows a UA to indicate which
   application sub-types the agent supports.

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