%% You should probably cite rfc6794 instead of this I-D. @techreport{ietf-sip-session-policy-framework-10, number = {draft-ietf-sip-session-policy-framework-10}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-sip-session-policy-framework/10/}, author = {Gonzalo Camarillo and Jonathan Rosenberg and Volker Hilt}, title = {{A Framework for Session Initiation Protocol (SIP) Session Policies}}, pagetotal = 36, year = 2011, month = feb, day = 18, abstract = {Proxy servers play a central role as an intermediary in the Session Initiation Protocol (SIP) as they define and impact policies on call routing, rendezvous, and other call features. This document specifies a framework for SIP session policies that provides a standard mechanism by which a proxy can define or influence policies on sessions, such as the codecs or media types to be used. It defines a model, an overall architecture and new protocol mechanisms for session policies. {[}STANDARDS-TRACK{]}}, }