Title: Caller Preferences for the Session Initiation Protocol (SIP)
Author(s): J. Rosenberg, H. Schulzrinne, P. Kyzivat.
Status: PROPOSED STANDARD
Date: Aug 2004
Length: 61382
This document describes a set of extensions to the Session Initiation Protocol (SIP) which allow a caller to express preferences about request handling in servers. These preferences include the ability to select which Uniform Resource Identifiers (URI) a request gets routed to, and to specify certain request handling directives in proxies and redirect servers. It does so by defining three new request header fields, Accept-Contact, Reject-Contact, and Request- Disposition, which specify the caller's preferences.
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