| 10023 | The "_for-sale" Underscored and Globally Scoped DNS Node NameM. Davids | Informational | July 2026 |
| 9796 | SIP Call-Info Parameters for Rich Call DataC. Wendt, J. Peterson | Proposed Standard | July 2025 |
| 9553 | JSContact: A JSON Representation of Contact DataR. Stepanek, M. Loffredo | Proposed Standard | May 2024 |
| 9248 | Interoperability Profile for Relay User EquipmentB. Rosen | Proposed Standard | June 2022 |
| 9116 | A File Format to Aid in Security Vulnerability DisclosureE. Foudil, Y. Shafranovich | Informational | April 2022 |
| 8224 | Authenticated Identity Management in the Session Initiation Protocol (SIP)J. Peterson, C. Jennings, E. Rescorla, C. Wendt | Proposed Standard | February 2018 |
| 8197 | A SIP Response Code for Unwanted CallsH. Schulzrinne | Proposed Standard | July 2017 |
| 7991 | The "xml2rfc" Version 3 VocabularyP. Hoffman | Informational | December 2016 |
| 7986 | New Properties for iCalendarC. Daboo | Proposed Standard | October 2016 |
| 7904 | A SIP Usage for REsource LOcation And Discovery (RELOAD)C. Jennings, B. Lowekamp, E. Rescorla, S. Baset, H. Schulzrinne, T. Schmidt, Ed. | Proposed Standard | October 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 |
| 7749 | The "xml2rfc" Version 2 VocabularyJ. Reschke · obsoleted by RFC 7991 | Informational | February 2016 |
| 7701 | Multi-party Chat Using the Message Session Relay Protocol (MSRP)A. Niemi, M. Garcia-Martin, G. Sandbakken | Proposed Standard | December 2015 |
| 7643 | System for Cross-domain Identity Management: Core SchemaP. Hunt, Ed., K. Grizzle, E. Wahlstroem, C. Mortimore | Proposed Standard | September 2015 |
| 7566 | Enumservice Registration for 'acct' URIL. Goix, K. Li | Experimental | June 2015 |
| 7544 | Mapping and Interworking of Diversion Information between Diversion and History-Info Header Fields in the Session Initiation Protocol (SIP)M. Mohali | Informational | August 2015 |
| 7340 | Secure Telephone Identity Problem Statement and RequirementsJ. Peterson, H. Schulzrinne, H. Tschofenig | Informational | September 2014 |
| 7247 | Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): Architecture, Addresses, and Error HandlingP. Saint-Andre, A. Houri, J. Hildebrand | Proposed Standard | May 2014 |
| 7200 | A Session Initiation Protocol (SIP) Load-Control Event PackageC. Shen, H. Schulzrinne, A. Koike | Proposed Standard | April 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 |
| 7044 | An Extension to the Session Initiation Protocol (SIP) for Request History InformationM. Barnes, F. Audet, S. Schubert, J. van Elburg, C. Holmberg | Proposed Standard | February 2014 |
| 6881 | Best Current Practice for Communications Services in Support of Emergency CallingB. Rosen, J. Polk | Best Current Practice | March 2013 |
| 6509 | MIKEY-SAKKE: Sakai-Kasahara Key Encryption in Multimedia Internet KEYing (MIKEY)M. Groves | Informational | February 2012 |
| 6350 | vCard Format SpecificationS. Perreault | Proposed Standard | August 2011 |
| 6271 | Requirements for SIP-Based Session PeeringJ-F. Mule | Informational | June 2011 |
| 6155 | Use of Device Identity in HTTP-Enabled Location Delivery (HELD)J. Winterbottom, M. Thomson, H. Tschofenig, R. Barnes | Proposed Standard | March 2011 |
| 6140 | Registration for Multiple Phone Numbers in the Session Initiation Protocol (SIP)A.B. Roach | Proposed Standard | March 2011 |
| 6118 | Update of Legacy IANA Registrations of EnumservicesB. Hoeneisen, A. Mayrhofer | Proposed Standard | March 2011 |
| 6117 | IANA Registration of Enumservices: Guide, Template, and IANA ConsiderationsB. Hoeneisen, A. Mayrhofer, J. Livingood | Proposed Standard | March 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 |
| 5724 | URI Scheme for Global System for Mobile Communications (GSM) Short Message Service (SMS)E. Wilde, A. Vaha-Sipila | Proposed Standard | January 2010 |
| 5627 | Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP)J. Rosenberg | Proposed Standard | October 2009 |
| 5483 | ENUM Implementation Issues and ExperiencesL. Conroy, K. Fujiwara | Informational | March 2009 |
| 5435 | Sieve Email Filtering: Extension for NotificationsA. Melnikov, Ed., B. Leiba, Ed., W. Segmuller, T. Martin | Proposed Standard | January 2009 |
| 5361 | A Document Format for Requesting ConsentG. Camarillo | Proposed Standard | October 2008 |
| 5341 | The Internet Assigned Number Authority (IANA) tel Uniform Resource Identifier (URI) Parameter RegistryC. Jennings, V. Gurbani | Proposed Standard | September 2008 |
| 5278 | IANA Registration of Enumservices for Voice and Video MessagingJ. Livingood, D. Troshynski | Proposed Standard | July 2008 |
| 5222 | LoST: A Location-to-Service Translation ProtocolT. Hardie, A. Newton, H. Schulzrinne, H. Tschofenig | Proposed Standard | August 2008 |
| 5090 | RADIUS Extension for Digest AuthenticationB. Sterman, D. Sadolevsky, D. Schwartz, D. Williams, W. Beck | Proposed Standard | February 2008 |
| 5031 | A Uniform Resource Name (URN) for Emergency and Other Well-Known ServicesH. Schulzrinne | Proposed Standard | January 2008 |
| 5025 | Presence Authorization RulesJ. Rosenberg | Proposed Standard | December 2007 |
| 5012 | Requirements for Emergency Context Resolution with Internet TechnologiesH. Schulzrinne, R. Marshall, Ed. | Informational | January 2008 |
| 4967 | Dial String Parameter for the Session Initiation Protocol Uniform Resource IdentifierB. Rosen | Proposed Standard | July 2007 |
| 4904 | Representing Trunk Groups in tel/sip Uniform Resource Identifiers (URIs)V. Gurbani, C. Jennings | Proposed Standard | June 2007 |
| 4793 | The EAP Protected One-Time Password Protocol (EAP-POTP)M. Nystroem | Informational | February 2007 |
| 4769 | IANA Registration for an Enumservice Containing Public Switched Telephone Network (PSTN) Signaling InformationJ. Livingood, R. Shockey | Proposed Standard | November 2006 |
| 4759 | The ENUM Dip Indicator Parameter for the "tel" URIR. Stastny, R. Shockey, L. Conroy | Proposed Standard | December 2006 |
| 4715 | The Integrated Services Digital Network (ISDN) Subaddress Encoding Type for tel URIM. Munakata, S. Schubert, T. Ohba | Informational | November 2006 |
| 4694 | Number Portability Parameters for the "tel" URIJ. Yu | Proposed Standard | October 2006 |
| 4590 | RADIUS Extension for Digest AuthenticationB. Sterman, D. Sadolevsky, D. Schwartz, D. Williams, W. Beck · obsoleted by RFC 5090 | Proposed Standard | July 2006 |
| 4575 | A Session Initiation Protocol (SIP) Event Package for Conference StateJ. Rosenberg, H. Schulzrinne, O. Levin, Ed. | Proposed Standard | August 2006 |
| 4504 | SIP Telephony Device Requirements and ConfigurationH. Sinnreich, Ed., S. Lass, C. Stredicke | Informational | May 2006 |
| 4479 | A Data Model for PresenceJ. Rosenberg | Proposed Standard | July 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 |
| 4415 | IANA Registration for Enumservice VoiceR. Brandner, L. Conroy, R. Stastny | Proposed Standard | February 2006 |
| 4355 | IANA Registration for Enumservices email, fax, mms, ems, and smsR. Brandner, L. Conroy, R. Stastny | Proposed Standard | January 2006 |
| 4083 | Input 3rd-Generation Partnership Project (3GPP) Release 5 Requirements on the Session Initiation Protocol (SIP)M. Garcia-Martin | Informational | May 2005 |