| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3264 | An Offer/Answer Model with Session Description Protocol (SDP)J. Rosenberg, H. Schulzrinne | Proposed Standard | July 2002 |
| 3323 | A Privacy Mechanism for the Session Initiation Protocol (SIP)J. Peterson | Proposed Standard | December 2002 |
| 3550 | RTP: A Transport Protocol for Real-Time ApplicationsH. Schulzrinne, S. Casner, R. Frederick, V. Jacobson | Internet Standard | July 2003 |
| 3711 | The Secure Real-time Transport Protocol (SRTP)M. Baugher, D. McGrew, M. Naslund, E. Carrara, K. Norrman | Proposed Standard | March 2004 |
| 4474 | Enhancements for Authenticated Identity Management in the Session Initiation Protocol (SIP)J. Peterson, C. Jennings · obsoleted by RFC 8224 | Proposed Standard | August 2006 |
| 4566 | SDP: Session Description ProtocolM. Handley, V. Jacobson, C. Perkins · obsoleted by RFC 8866 | Proposed Standard | July 2006 |
| 4568 | Session Description Protocol (SDP) Security Descriptions for Media StreamsF. Andreasen, M. Baugher, D. Wing | Proposed Standard | July 2006 |
| 4916 | Connected Identity in the Session Initiation Protocol (SIP)J. Elwell | Proposed Standard | June 2007 |
| 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 |
| 6189 | ZRTP: Media Path Key Agreement for Unicast Secure RTPP. Zimmermann, A. Johnston, Ed., J. Callas | Informational | April 2011 |
| 6962 | Certificate TransparencyB. Laurie, A. Langley, E. Kasper · obsoleted by RFC 9162 | Experimental | June 2013 |
| 7245 | An Architecture for Media Recording Using the Session Initiation ProtocolA. Hutton, Ed., L. Portman, Ed., R. Jain, K. Rehor | Informational | May 2014 |
| 7258 | Pervasive Monitoring Is an AttackS. Farrell, H. Tschofenig | Best Current Practice | May 2014 |
| 7435 | Opportunistic Security: Some Protection Most of the TimeV. Dukhovni | Informational | December 2014 |
| 7616 | HTTP Digest Access AuthenticationR. Shekh-Yusef, Ed., D. Ahrens, S. Bremer | Proposed Standard | September 2015 |
| 7675 | Session Traversal Utilities for NAT (STUN) Usage for Consent FreshnessM. Perumal, D. Wing, R. Ravindranath, T. Reddy, M. Thomson | Proposed Standard | October 2015 |
| 7841 | RFC Streams, Headers, and BoilerplatesJ. Halpern, Ed., L. Daigle, Ed., O. Kolkman, Ed. | Informational | May 2016 |
| 7879 | DTLS-SRTP Handling in SIP Back-to-Back User AgentsR. Ravindranath, T. Reddy, G. Salgueiro, V. Pascual, P. Ravindran | Proposed Standard | May 2016 |
| 8174 | Ambiguity of Uppercase vs Lowercase in RFC 2119 Key WordsB. Leiba | Best Current Practice | May 2017 |
| 8224 | Authenticated Identity Management in the Session Initiation Protocol (SIP)J. Peterson, C. Jennings, E. Rescorla, C. Wendt | Proposed Standard | February 2018 |
| 8225 | PASSporT: Personal Assertion TokenC. Wendt, J. Peterson | Proposed Standard | February 2018 |
| 8226 | Secure Telephone Identity Credentials: CertificatesJ. Peterson, S. Turner | Proposed Standard | February 2018 |
| 8445 | Interactive Connectivity Establishment (ICE): A Protocol for Network Address Translator (NAT) TraversalA. Keranen, C. Holmberg, J. Rosenberg | Proposed Standard | July 2018 |
| 8446 | The Transport Layer Security (TLS) Protocol Version 1.3E. Rescorla · obsoleted by RFC 9846 | Proposed Standard | August 2018 |
| 8551 | Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Message SpecificationJ. Schaad, B. Ramsdell, S. Turner | Proposed Standard | April 2019 |
| 8643 | An Opportunistic Approach for Secure Real-time Transport Protocol (OSRTP)A. Johnston, B. Aboba, A. Hutton, R. Jesske, T. Stach | Informational | August 2019 |
| 8838 | Trickle ICE: Incremental Provisioning of Candidates for the Interactive Connectivity Establishment (ICE) ProtocolE. Ivov, J. Uberti, P. Saint-Andre | 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 |
| 8840 | A Session Initiation Protocol (SIP) Usage for Incremental Provisioning of Candidates for the Interactive Connectivity Establishment (Trickle ICE)E. Ivov, T. Stach, E. Marocco, C. Holmberg | Proposed Standard | January 2021 |