| 9248 | Interoperability Profile for Relay User EquipmentB. Rosen | Proposed Standard | June 2022 |
| 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 |
| 8599 | Push Notification with the Session Initiation Protocol (SIP)C. Holmberg, M. Arnold | Proposed Standard | May 2019 |
| 8489 | Session Traversal Utilities for NAT (STUN)M. Petit-Huguenin, G. Salgueiro, J. Rosenberg, D. Wing, R. Mahy, P. Matthews | Proposed Standard | February 2020 |
| 8465 | Using the Mobile Equipment Identity (MEID) URN as an Instance IDR. Atarius, Ed. | Informational | September 2018 |
| 8464 | A URN Namespace for Device Identity and Mobile Equipment Identity (MEID)R. Atarius | Informational | September 2018 |
| 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 |
| 7350 | Datagram Transport Layer Security (DTLS) as Transport for Session Traversal Utilities for NAT (STUN)M. Petit-Huguenin, G. Salgueiro | Proposed Standard | August 2014 |
| 7255 | Using the International Mobile station Equipment Identity (IMEI) Uniform Resource Name (URN) as an Instance IDA. Allen, Ed. | Informational | May 2014 |
| 7254 | A Uniform Resource Name Namespace for the Global System for Mobile Communications Association (GSMA) and the International Mobile station Equipment Identity (IMEI)M. Montemurro, Ed., A. Allen, D. McDonald, P. Gosden | Informational | May 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 |
| 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 |
| 6881 | Best Current Practice for Communications Services in Support of Emergency CallingB. Rosen, J. Polk | Best Current Practice | March 2013 |
| 6809 | Mechanism to Indicate Support of Features and Capabilities in the Session Initiation Protocol (SIP)C. Holmberg, I. Sedlacek, H. Kaplan | Proposed Standard | November 2012 |
| 6751 | Native IPv6 behind IPv4-to-IPv4 NAT Customer Premises Equipment (6a44)R. Despres, Ed., B. Carpenter, D. Wing, S. Jiang | Experimental | October 2012 |
| 6443 | Framework for Emergency Calling Using Internet MultimediaB. Rosen, H. Schulzrinne, J. Polk, A. Newton | Informational | December 2011 |
| 6314 | NAT Traversal Practices for Client-Server SIPC. Boulton, J. Rosenberg, G. Camarillo, F. Audet | Informational | July 2011 |
| 6272 | Internet Protocols for the Smart GridF. Baker, D. Meyer | Informational | June 2011 |
| 6230 | Media Control Channel FrameworkC. Boulton, T. Melanchuk, S. McGlashan | Proposed Standard | May 2011 |
| 6223 | Indication of Support for Keep-AliveC. Holmberg | Proposed Standard | April 2011 |
| 6140 | Registration for Multiple Phone Numbers in the Session Initiation Protocol (SIP)A.B. Roach | Proposed Standard | March 2011 |
| 6080 | A Framework for Session Initiation Protocol User Agent Profile DeliveryD. Petrie, S. Channabasappa, Ed. | Proposed Standard | March 2011 |
| 6011 | Session Initiation Protocol (SIP) User Agent ConfigurationS. Lawrence, Ed., J. Elwell | Informational | October 2010 |
| 5947 | Requirements for Multiple Address of Record (AOR) Reachability Information in the Session Initiation Protocol (SIP)J. Elwell, H. Kaplan | Informational | September 2010 |
| 5923 | Connection Reuse in the Session Initiation Protocol (SIP)V. Gurbani, Ed., R. Mahy, B. Tate | Proposed Standard | June 2010 |
| 5780 | NAT Behavior Discovery Using Session Traversal Utilities for NAT (STUN)D. MacDonald, B. Lowekamp | Experimental | May 2010 |
| 5630 | The Use of the SIPS URI Scheme in the Session Initiation Protocol (SIP)F. Audet | Proposed Standard | October 2009 |
| 5627 | Obtaining and Using Globally Routable User Agent URIs (GRUUs) in the Session Initiation Protocol (SIP)J. Rosenberg | Proposed Standard | October 2009 |
| 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 |