RFC 5688

"A Session Initiation Protocol (SIP) Media Feature Tag for MIME Application Subtypes", January 2010

Canonical URL:

http://www.rfc-editor.org/rfc/rfc5688.txt
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Status:

PROPOSED STANDARD

Author:

J. Rosenberg

Stream:

IETF

Source:

NON WORKING GROUP

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Abstract

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 it provides insufficient granularity as a capability. This specification allows a UA to indicate which application subtypes the agent supports. [STANDARDS-TRACK]

For the definition of Stream, see RFC 4844.