%% You should probably cite rfc4575 instead of this I-D. @techreport{ietf-sipping-conference-package-12, number = {draft-ietf-sipping-conference-package-12}, 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-sipping-conference-package/12/}, author = {Henning Schulzrinne and Jonathan Rosenberg and Orit Levin}, title = {{A Session Initiation Protocol (SIP) Event Package for Conference State}}, pagetotal = 48, year = 2005, month = jul, day = 5, abstract = {This document defines a conference event package for tightly coupled conferences using the Session Initiation Protocol (SIP) events framework, along with a data format used in notifications for this package. The conference package allows users to subscribe to a conference Uniform Resource Identifier (URI). Notifications are sent about changes in the membership of this conference and optionally about changes in the state of additional conference components. {[}STANDARDS-TRACK{]}}, }