| 9071 | RTP-Mixer Formatting of Multiparty Real-Time TextG. Hellström | Proposed Standard | July 2021 |
| 8849 | Mapping RTP Streams to Controlling Multiple Streams for Telepresence (CLUE) Media CapturesR. Even, J. Lennox | Proposed Standard | January 2021 |
| 8068 | Session Initiation Protocol (SIP) Recording Call FlowsR. Ravindranath, P. Ravindran, P. Kyzivat | Informational | February 2017 |
| 7702 | Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): GroupchatP. Saint-Andre, S. Ibarra, S. Loreto | Proposed Standard | December 2015 |
| 7701 | Multi-party Chat Using the Message Session Relay Protocol (MSRP)A. Niemi, M. Garcia-Martin, G. Sandbakken | Proposed Standard | December 2015 |
| 7667 | RTP TopologiesM. Westerlund, S. Wenger | Informational | November 2015 |
| 7245 | An Architecture for Media Recording Using the Session Initiation ProtocolA. Hutton, Ed., L. Portman, Ed., R. Jain, K. Rehor | Informational | May 2014 |
| 7106 | A Group Text Chat Purpose for Conference and Service URIs in the SIP Event Package for Conference StateE. Ivov | Informational | January 2014 |
| 7082 | Indication of Conference Focus Support for the Centralized Conferencing Manipulation Protocol (CCMP)R. Shekh-Yusef, M. Barnes | Informational | December 2013 |
| 7081 | CUSAX: Combined Use of the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP)E. Ivov, P. Saint-Andre, E. Marocco | Informational | November 2013 |
| 6504 | Centralized Conferencing Manipulation Protocol (CCMP) Call Flow ExamplesM. Barnes, L. Miniero, R. Presta, S P. Romano | Informational | March 2012 |
| 6502 | Conference Event Package Data Format Extension for Centralized Conferencing (XCON)G. Camarillo, S. Srinivasan, R. Even, J. Urpalainen | Proposed Standard | March 2012 |
| 6501 | Conference Information Data Model for Centralized Conferencing (XCON)O. Novo, G. Camarillo, D. Morgan, J. Urpalainen | Proposed Standard | March 2012 |
| 6465 | A Real-time Transport Protocol (RTP) Header Extension for Mixer-to-Client Audio Level IndicationE. Ivov, Ed., E. Marocco, Ed., J. Lennox | Proposed Standard | December 2011 |
| 5850 | A Call Control and Multi-Party Usage Framework for the Session Initiation Protocol (SIP)R. Mahy, R. Sparks, J. Rosenberg, D. Petrie, A. Johnston, Ed. | Informational | May 2010 |
| 5589 | Session Initiation Protocol (SIP) Call Control - TransferR. Sparks, A. Johnston, Ed., D. Petrie | Best Current Practice | June 2009 |
| 5567 | An Architectural Framework for Media Server ControlT. Melanchuk, Ed. | Informational | June 2009 |
| 5411 | A Hitchhiker's Guide to the Session Initiation Protocol (SIP)J. Rosenberg | Informational | February 2009 |
| 5370 | The Session Initiation Protocol (SIP) Conference Bridge Transcoding ModelG. Camarillo | Proposed Standard | October 2008 |
| 5368 | Referring to Multiple Resources in the Session Initiation Protocol (SIP)G. Camarillo, A. Niemi, M. Isomaki, M. Garcia-Martin, H. Khartabil | Proposed Standard | October 2008 |
| 5366 | Conference Establishment Using Request-Contained Lists in the Session Initiation Protocol (SIP)G. Camarillo, A. Johnston | Proposed Standard | October 2008 |
| 5363 | Framework and Security Considerations for Session Initiation Protocol (SIP) URI-List ServicesG. Camarillo, A.B. Roach | Proposed Standard | October 2008 |
| 5239 | A Framework for Centralized ConferencingM. Barnes, C. Boulton, O. Levin | Proposed Standard | June 2008 |
| 5117 | RTP TopologiesM. Westerlund, S. Wenger · obsoleted by RFC 7667 | Informational | January 2008 |
| 5022 | Media Server Control Markup Language (MSCML) and ProtocolJ. Van Dyke, E. Burger, Ed., A. Spitzer | Informational | September 2007 |
| 4722 | Media Server Control Markup Language (MSCML) and ProtocolJ. Van Dyke, E. Burger, Ed., A. Spitzer · obsoleted by RFC 5022 | Informational | November 2006 |
| 4579 | Session Initiation Protocol (SIP) Call Control - Conferencing for User AgentsA. Johnston, O. Levin | Best Current Practice | August 2006 |
| 4574 | The Session Description Protocol (SDP) Label AttributeO. Levin, G. Camarillo | Proposed Standard | August 2006 |