| 10008 | The HTTP QUERY MethodJ. Reschke, J.M. Snell, M. Bishop | Proposed Standard | June 2026 |
| 9970 | Connected Identity for Secure Telephone Identity Revisited (STIR)J. Peterson, C. Wendt | Proposed Standard | June 2026 |
| 9796 | SIP Call-Info Parameters for Rich Call DataC. Wendt, J. Peterson | Proposed Standard | July 2025 |
| 9795 | Personal Assertion Token (PASSporT) Extension for Rich Call DataC. Wendt, J. Peterson | Proposed Standard | July 2025 |
| 8876 | Non-interactive Emergency CallsB. Rosen, H. Schulzrinne, H. Tschofenig, R. Gellens | Proposed Standard | September 2020 |
| 8787 | Location Source Parameter for the SIP Geolocation Header FieldJ. Winterbottom, R. Jesske, B. Chatras, A. Hutton | Proposed Standard | May 2020 |
| 8591 | SIP-Based Messaging with S/MIMEB. Campbell, R. Housley | Proposed Standard | April 2019 |
| 8496 | P-Charge-Info: A Private Header Field (P-Header) Extension to the Session Initiation Protocol (SIP)D. York, T. Asveren | Informational | October 2018 |
| 8224 | Authenticated Identity Management in the Session Initiation Protocol (SIP)J. Peterson, C. Jennings, E. Rescorla, C. Wendt | Proposed Standard | February 2018 |
| 8217 | Clarifications for When to Use the name-addr Production in SIP MessagesR. Sparks | Proposed Standard | August 2017 |
| 7866 | Session Recording ProtocolL. Portman, H. Lum, Ed., C. Eckel, A. Johnston, A. Hutton | Proposed Standard | May 2016 |
| 7865 | Session Initiation Protocol (SIP) Recording MetadataR. Ravindranath, P. Ravindran, P. Kyzivat | Proposed Standard | May 2016 |
| 7852 | Additional Data Related to an Emergency CallR. Gellens, B. Rosen, H. Tschofenig, R. Marshall, J. Winterbottom | Proposed Standard | July 2016 |
| 7701 | Multi-party Chat Using the Message Session Relay Protocol (MSRP)A. Niemi, M. Garcia-Martin, G. Sandbakken | Proposed Standard | December 2015 |
| 7549 | 3GPP SIP URI Inter-Operator Traffic Leg ParameterC. Holmberg, J. Holm, R. Jesske, M. Dolly | Proposed Standard | May 2015 |
| 7433 | A Mechanism for Transporting User-to-User Call Control Information in SIPA. Johnston, J. Rafferty | Proposed Standard | January 2015 |
| 7340 | Secure Telephone Identity Problem Statement and RequirementsJ. Peterson, H. Schulzrinne, H. Tschofenig | Informational | September 2014 |
| 7315 | Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP) for the 3GPPR. Jesske, K. Drage, C. Holmberg | Informational | July 2014 |
| 7200 | A Session Initiation Protocol (SIP) Load-Control Event PackageC. Shen, H. Schulzrinne, A. Koike | Proposed Standard | April 2014 |
| 7090 | Public Safety Answering Point (PSAP) CallbackH. Schulzrinne, H. Tschofenig, C. Holmberg, M. Patel | Proposed Standard | April 2014 |
| 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 |
| 6973 | Privacy Considerations for Internet ProtocolsA. Cooper, H. Tschofenig, B. Aboba, J. Peterson, J. Morris, M. Hansen, R. Smith | Informational | July 2013 |
| 6910 | Completion of Calls for the Session Initiation Protocol (SIP)D. Worley, M. Huelsemann, R. Jesske, D. Alexeitsev | Proposed Standard | April 2013 |
| 6881 | Best Current Practice for Communications Services in Support of Emergency CallingB. Rosen, J. Polk | Best Current Practice | March 2013 |
| 6443 | Framework for Emergency Calling Using Internet MultimediaB. Rosen, H. Schulzrinne, J. Polk, A. Newton | Informational | December 2011 |
| 6404 | Session PEERing for Multimedia INTerconnect (SPEERMINT) Security Threats and Suggested CountermeasuresJ. Seedorf, S. Niccolini, E. Chen, H. Scholz | Informational | November 2011 |
| 5947 | Requirements for Multiple Address of Record (AOR) Reachability Information in the Session Initiation Protocol (SIP)J. Elwell, H. Kaplan | Informational | September 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 |
| 5806 | Diversion Indication in SIPS. Levy, M. Mohali, Ed. | Historic | March 2010 |
| 5767 | User-Agent-Driven Privacy Mechanism for SIPM. Munakata, S. Schubert, T. Ohba | Informational | April 2010 |
| 5763 | Framework for Establishing a Secure Real-time Transport Protocol (SRTP) Security Context Using Datagram Transport Layer Security (DTLS)J. Fischl, H. Tschofenig, E. Rescorla | Proposed Standard | May 2010 |
| 5727 | Change Process for the Session Initiation Protocol (SIP) and the Real-time Applications and Infrastructure AreaJ. Peterson, C. Jennings, R. Sparks | Best Current Practice | March 2010 |
| 5629 | A Framework for Application Interaction in the Session Initiation Protocol (SIP)J. Rosenberg | Proposed Standard | October 2009 |
| 5503 | Private Session Initiation Protocol (SIP) Proxy-to-Proxy Extensions for Supporting the PacketCable Distributed Call Signaling ArchitectureF. Andreasen, B. McKibben, B. Marshall | Informational | March 2009 |
| 5502 | The SIP P-Served-User Private-Header (P-Header) for the 3GPP IP Multimedia (IM) Core Network (CN) SubsystemJ. van Elburg | Informational | April 2009 |
| 5411 | A Hitchhiker's Guide to the Session Initiation Protocol (SIP)J. Rosenberg | Informational | February 2009 |
| 5379 | Guidelines for Using the Privacy Mechanism for SIPM. Munakata, S. Schubert, T. Ohba | Informational | February 2010 |
| 5373 | Requesting Answering Modes for the Session Initiation Protocol (SIP)D. Willis, Ed., A. Allen | Proposed Standard | November 2008 |
| 5370 | The Session Initiation Protocol (SIP) Conference Bridge Transcoding ModelG. Camarillo | Proposed Standard | October 2008 |
| 5365 | Multiple-Recipient MESSAGE Requests in the Session Initiation Protocol (SIP)M. Garcia-Martin, G. Camarillo | Proposed Standard | October 2008 |
| 5361 | A Document Format for Requesting ConsentG. Camarillo | Proposed Standard | October 2008 |
| 5360 | A Framework for Consent-Based Communications in the Session Initiation Protocol (SIP)J. Rosenberg, G. Camarillo, Ed., D. Willis | Proposed Standard | October 2008 |
| 5079 | Rejecting Anonymous Requests in the Session Initiation Protocol (SIP)J. Rosenberg | Proposed Standard | December 2007 |
| 5039 | The Session Initiation Protocol (SIP) and SpamJ. Rosenberg, C. Jennings | Informational | January 2008 |
| 5025 | Presence Authorization RulesJ. Rosenberg | Proposed Standard | December 2007 |
| 5009 | Private Header (P-Header) Extension to the Session Initiation Protocol (SIP) for Authorization of Early MediaR. Ejzak | Informational | September 2007 |
| 4504 | SIP Telephony Device Requirements and ConfigurationH. Sinnreich, Ed., S. Lass, C. Stredicke | Informational | May 2006 |
| 4497 | Interworking between the Session Initiation Protocol (SIP) and QSIGJ. Elwell, F. Derks, P. Mourot, O. Rousseau | Best Current Practice | May 2006 |
| 4474 | Enhancements for Authenticated Identity Management in the Session Initiation Protocol (SIP)J. Peterson, C. Jennings · obsoleted by RFC 8224 | Proposed Standard | August 2006 |
| 4412 | Communications Resource Priority for the Session Initiation Protocol (SIP)H. Schulzrinne, J. Polk | Proposed Standard | February 2006 |
| 4083 | Input 3rd-Generation Partnership Project (3GPP) Release 5 Requirements on the Session Initiation Protocol (SIP)M. Garcia-Martin | Informational | May 2005 |
| 3603 | Private Session Initiation Protocol (SIP) Proxy-to-Proxy Extensions for Supporting the PacketCable Distributed Call Signaling ArchitectureW. Marshall, Ed., F. Andreasen, Ed. · obsoleted by RFC 5503 | Informational | October 2003 |