| 9970 | Connected Identity for Secure Telephone Identity Revisited (STIR)J. Peterson, C. Wendt | Proposed Standard | June 2026 |
| 8844 | Unknown Key-Share Attacks on Uses of TLS with the Session Description Protocol (SDP)M. Thomson, E. Rescorla | Proposed Standard | January 2021 |
| 8839 | Session Description Protocol (SDP) Offer/Answer Procedures for Interactive Connectivity Establishment (ICE)M. Petit-Huguenin, S. Nandakumar, C. Holmberg, A. Keränen, R. Shpount | Proposed Standard | January 2021 |
| 8506 | Diameter Credit-Control ApplicationL. Bertz, Ed., D. Dolson, Ed., Y. Lifshitz, Ed. | Proposed Standard | March 2019 |
| 8445 | Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) TraversalA. Keranen, C. Holmberg, J. Rosenberg | Proposed Standard | July 2018 |
| 8197 | A SIP Response Code for Unwanted CallsH. Schulzrinne | Proposed Standard | July 2017 |
| 7989 | End-to-End Session Identification in IP-Based Multimedia Communication NetworksP. Jones, G. Salgueiro, C. Pearce, P. Giralt | Proposed Standard | October 2016 |
| 7206 | Requirements for an End-to-End Session Identification in IP-Based Multimedia Communication NetworksP. Jones, G. Salgueiro, J. Polk, L. Liess, H. Kaplan | Informational | May 2014 |
| 7195 | Session Description Protocol (SDP) Extension for Setting Audio and Video Media Streams over Circuit-Switched Bearers in the Public Switched Telephone Network (PSTN)M. Garcia-Martin, S. Veikkolainen | Proposed Standard | May 2014 |
| 7058 | Media Control Channel Framework (CFW) Call Flow ExamplesA. Amirante, T. Castaldi, L. Miniero, S P. Romano | Informational | November 2013 |
| 6910 | Completion of Calls for the Session Initiation Protocol (SIP)D. Worley, M. Huelsemann, R. Jesske, D. Alexeitsev | Proposed Standard | April 2013 |
| 6794 | A Framework for Session Initiation Protocol (SIP) Session PoliciesV. Hilt, G. Camarillo, J. Rosenberg | Proposed Standard | December 2012 |
| 6337 | Session Initiation Protocol (SIP) Usage of the Offer/Answer ModelS. Okumura, T. Sawada, P. Kyzivat | Informational | August 2011 |
| 6230 | Media Control Channel FrameworkC. Boulton, T. Melanchuk, S. McGlashan | Proposed Standard | May 2011 |
| 6157 | IPv6 Transition in the Session Initiation Protocol (SIP)G. Camarillo, K. El Malki, V. Gurbani | Proposed Standard | April 2011 |
| 5923 | Connection Reuse in the Session Initiation Protocol (SIP)V. Gurbani, Ed., R. Mahy, B. Tate | Proposed Standard | June 2010 |
| 5876 | Updates to Asserted Identity in the Session Initiation Protocol (SIP)J. Elwell | Informational | April 2010 |
| 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 |
| 5768 | Indicating Support for Interactive Connectivity Establishment (ICE) in the Session Initiation Protocol (SIP)J. Rosenberg | Proposed Standard | April 2010 |
| 5707 | Media Server Markup Language (MSML)A. Saleem, Y. Xin, G. Sharratt | Informational | February 2010 |
| 5631 | Session Initiation Protocol (SIP) Session MobilityR. Shacham, H. Schulzrinne, S. Thakolsri, W. Kellerer | Informational | October 2009 |
| 5630 | The Use of the SIPS URI Scheme in the Session Initiation Protocol (SIP)F. Audet | Proposed Standard | October 2009 |
| 5567 | An Architectural Framework for Media Server ControlT. Melanchuk, Ed. | Informational | June 2009 |
| 5552 | SIP Interface to VoiceXML Media ServicesD. Burke, M. Scott | Proposed Standard | May 2009 |
| 5411 | A Hitchhiker's Guide to the Session Initiation Protocol (SIP)J. Rosenberg | Informational | February 2009 |
| 5369 | Framework for Transcoding with the Session Initiation Protocol (SIP)G. Camarillo | Informational | October 2008 |
| 5359 | Session Initiation Protocol Service ExamplesA. Johnston, Ed., R. Sparks, C. Cunningham, S. Donovan, K. Summers | Best Current Practice | October 2008 |
| 5245 | Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) Traversal for Offer/Answer ProtocolsJ. Rosenberg · obsoleted by RFC 8445, RFC 8839 | Proposed Standard | April 2010 |
| 4975 | The Message Session Relay Protocol (MSRP)B. Campbell, Ed., R. Mahy, Ed., C. Jennings, Ed. | Proposed Standard | September 2007 |
| 4916 | Connected Identity in the Session Initiation Protocol (SIP)J. Elwell | Proposed Standard | June 2007 |
| 4596 | Guidelines for Usage of the Session Initiation Protocol (SIP) Caller Preferences ExtensionJ. Rosenberg, P. Kyzivat | Informational | July 2006 |
| 4504 | SIP Telephony Device Requirements and ConfigurationH. Sinnreich, Ed., S. Lass, C. Stredicke | Informational | May 2006 |
| 4353 | A Framework for Conferencing with the Session Initiation Protocol (SIP)J. Rosenberg | Informational | February 2006 |
| 4317 | Session Description Protocol (SDP) Offer/Answer ExamplesA. Johnston, R. Sparks | Informational | December 2005 |
| 4235 | An INVITE-Initiated Dialog Event Package for the Session Initiation Protocol (SIP)J. Rosenberg, H. Schulzrinne, R. Mahy, Ed. | Proposed Standard | November 2005 |
| 4145 | TCP-Based Media Transport in the Session Description Protocol (SDP)D. Yon, G. Camarillo | Proposed Standard | September 2005 |
| 4117 | Transcoding Services Invocation in the Session Initiation Protocol (SIP) Using Third Party Call Control (3pcc)G. Camarillo, E. Burger, H. Schulzrinne, A. van Wijk | Informational | June 2005 |
| 4032 | Update to the Session Initiation Protocol (SIP) Preconditions FrameworkG. Camarillo, P. Kyzivat | Proposed Standard | March 2005 |
| 4006 | Diameter Credit-Control ApplicationH. Hakala, L. Mattila, J-P. Koskinen, M. Stura, J. Loughney · obsoleted by RFC 8506 | Proposed Standard | August 2005 |
| 3911 | The Session Initiation Protocol (SIP) "Join" HeaderR. Mahy, D. Petrie | Proposed Standard | October 2004 |
| 3893 | Session Initiation Protocol (SIP) Authenticated Identity Body (AIB) FormatJ. Peterson | Proposed Standard | September 2004 |
| 3891 | The Session Initiation Protocol (SIP) "Replaces" HeaderR. Mahy, B. Biggs, R. Dean | Proposed Standard | September 2004 |