| 9248 | Interoperability Profile for Relay User EquipmentB. Rosen | Proposed Standard | June 2022 |
| 8553 | DNS Attrleaf Changes: Fixing Specifications That Use Underscored Node NamesD. Crocker | Best Current Practice | March 2019 |
| 8224 | Authenticated Identity Management in the Session Initiation Protocol (SIP)J. Peterson, C. Jennings, E. Rescorla, C. Wendt | Proposed Standard | February 2018 |
| 7984 | Locating Session Initiation Protocol (SIP) Servers in a Dual-Stack IP NetworkO. Johansson, G. Salgueiro, V. Gurbani, D. Worley, Ed. | Proposed Standard | September 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 |
| 7890 | Concepts and Terminology for Peer-to-Peer SIP (P2PSIP)D. Bryan, P. Matthews, E. Shim, D. Willis, S. Dawkins | Informational | June 2016 |
| 7340 | Secure Telephone Identity Problem Statement and RequirementsJ. Peterson, H. Schulzrinne, H. Tschofenig | Informational | September 2014 |
| 7339 | Session Initiation Protocol (SIP) Overload ControlV. Gurbani, Ed., V. Hilt, H. Schulzrinne | Proposed Standard | 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 |
| 7245 | An Architecture for Media Recording Using the Session Initiation ProtocolA. Hutton, Ed., L. Portman, Ed., R. Jain, K. Rehor | Informational | May 2014 |
| 7118 | The WebSocket Protocol as a Transport for the Session Initiation Protocol (SIP)I. Baz Castillo, J. Millan Villegas, V. Pascual | Proposed Standard | January 2014 |
| 6950 | Architectural Considerations on Application Features in the DNSJ. Peterson, O. Kolkman, H. Tschofenig, B. Aboba | Informational | October 2013 |
| 6881 | Best Current Practice for Communications Services in Support of Emergency CallingB. Rosen, J. Polk | Best Current Practice | March 2013 |
| 6795 | A Session Initiation Protocol (SIP) Event Package for Session-Specific PoliciesV. Hilt, G. Camarillo | Proposed Standard | December 2012 |
| 6461 | Data for Reachability of Inter-/Intra-NetworK SIP (DRINKS) Use Cases and Protocol RequirementsS. Channabasappa, Ed. | Informational | January 2012 |
| 6406 | Session PEERing for Multimedia INTerconnect (SPEERMINT) ArchitectureD. Malas, Ed., J. Livingood, Ed. | Informational | November 2011 |
| 6405 | Voice over IP (VoIP) SIP Peering Use CasesA. Uzelac, Ed., Y. Lee, Ed. | Informational | November 2011 |
| 6314 | NAT Traversal Practices for Client-Server SIPC. Boulton, J. Rosenberg, G. Camarillo, F. Audet | Informational | July 2011 |
| 6271 | Requirements for SIP-Based Session PeeringJ-F. Mule | Informational | June 2011 |
| 6230 | Media Control Channel FrameworkC. Boulton, T. Melanchuk, S. McGlashan | Proposed Standard | May 2011 |
| 6216 | Example Call Flows Using Session Initiation Protocol (SIP) Security MechanismsC. Jennings, K. Ono, R. Sparks, B. Hibbard, Ed. | Informational | April 2011 |
| 6157 | IPv6 Transition in the Session Initiation Protocol (SIP)G. Camarillo, K. El Malki, V. Gurbani | Proposed Standard | April 2011 |
| 6140 | Registration for Multiple Phone Numbers in the Session Initiation Protocol (SIP)A.B. Roach | Proposed Standard | March 2011 |
| 6116 | The E.164 to Uniform Resource Identifiers (URI) Dynamic Delegation Discovery System (DDDS) Application (ENUM)S. Bradner, L. Conroy, K. Fujiwara | Proposed Standard | March 2011 |
| 6080 | A Framework for Session Initiation Protocol User Agent Profile DeliveryD. Petrie, S. Channabasappa, Ed. | 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 |
| 5924 | Extended Key Usage (EKU) for Session Initiation Protocol (SIP) X.509 CertificatesS. Lawrence, V. Gurbani | Experimental | June 2010 |
| 5923 | Connection Reuse in the Session Initiation Protocol (SIP)V. Gurbani, Ed., R. Mahy, B. Tate | Proposed Standard | June 2010 |
| 5922 | Domain Certificates in the Session Initiation Protocol (SIP)V. Gurbani, S. Lawrence, A. Jeffrey | Proposed Standard | June 2010 |
| 5658 | Addressing Record-Route Issues in the Session Initiation Protocol (SIP)T. Froment, C. Lebel, B. Bonnaerens | Proposed Standard | October 2009 |
| 5638 | Simple SIP Usage Scenario for Applications in the EndpointsH. Sinnreich, Ed., A. Johnston, E. Shim, K. Singh | Informational | September 2009 |
| 5627 | Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP)J. Rosenberg | Proposed Standard | October 2009 |
| 5626 | Managing Client-Initiated Connections in the Session Initiation Protocol (SIP)C. Jennings, Ed., R. Mahy, Ed., F. Audet, Ed. | Proposed Standard | October 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 |
| 5346 | Operational Requirements for ENUM-Based Softswitch UseJ. Lim, W. Kim, C. Park, L. Conroy | Informational | October 2008 |
| 5057 | Multiple Dialog Usages in the Session Initiation ProtocolR. Sparks | Informational | November 2007 |
| 4740 | Diameter Session Initiation Protocol (SIP) ApplicationM. Garcia-Martin, Ed., M. Belinchon, M. Pallares-Lopez, C. Canales-Valenzuela, K. Tammi | Proposed Standard | November 2006 |
| 4504 | SIP Telephony Device Requirements and ConfigurationH. Sinnreich, Ed., S. Lass, C. Stredicke | Informational | 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 |
| 4453 | Requirements for Consent-Based Communications in the Session Initiation Protocol (SIP)J. Rosenberg, G. Camarillo, Ed., D. Willis | Informational | April 2006 |
| 4321 | Problems Identified Associated with the Session Initiation Protocol's (SIP) Non-INVITE TransactionR. Sparks | Informational | January 2006 |
| 4320 | Actions Addressing Identified Issues with the Session Initiation Protocol's (SIP) Non-INVITE TransactionR. Sparks | Proposed Standard | January 2006 |
| 4168 | The Stream Control Transmission Protocol (SCTP) as a Transport for the Session Initiation Protocol (SIP)J. Rosenberg, H. Schulzrinne, G. Camarillo | Proposed Standard | October 2005 |
| 4123 | Session Initiation Protocol (SIP)-H.323 Interworking RequirementsH. Schulzrinne, C. Agboh | Informational | July 2005 |
| 4083 | Input 3rd-Generation Partnership Project (3GPP) Release 5 Requirements on the Session Initiation Protocol (SIP)M. Garcia-Martin | Informational | May 2005 |
| 3944 | H.350 Directory ServicesT. Johnson, S. Okubo, S. Campos | Informational | December 2004 |
| 3910 | The SPIRITS (Services in PSTN requesting Internet Services) ProtocolV. Gurbani, Ed., A. Brusilovsky, I. Faynberg, J. Gato, H. Lu, M. Unmehopa | Proposed Standard | October 2004 |
| 3824 | Using E.164 numbers with the Session Initiation Protocol (SIP)J. Peterson, H. Liu, J. Yu, B. Campbell | Informational | June 2004 |
| 3794 | Survey of IPv4 Addresses in Currently Deployed IETF Transport Area Standards Track and Experimental DocumentsP. Nesser, II, A. Bergstrom, Ed. | Informational | June 2004 |
| 3764 | enumservice registration for Session Initiation Protocol (SIP) Addresses-of-RecordJ. Peterson | Proposed Standard | April 2004 |
| 3361 | Dynamic Host Configuration Protocol (DHCP-for-IPv4) Option for Session Initiation Protocol (SIP) ServersH. Schulzrinne | Proposed Standard | August 2002 |
| 3329 | Security Mechanism Agreement for the Session Initiation Protocol (SIP)J. Arkko, V. Torvinen, G. Camarillo, A. Niemi, T. Haukka | Proposed Standard | January 2003 |
| 3319 | Dynamic Host Configuration Protocol (DHCPv6) Options for Session Initiation Protocol (SIP) ServersH. Schulzrinne, B. Volz | Proposed Standard | July 2003 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |