| 2119 | Key words for use in RFCs to Indicate Requirement LevelsS. Bradner | Best Current Practice | March 1997 |
| 2198 | RTP Payload for Redundant Audio DataC. Perkins, I. Kouvelas, O. Hodson, V. Hardman, M. Handley, J.C. Bolot, A. Vega-Garcia, S. Fosse-Parisis | Proposed Standard | September 1997 |
| 2326 | Real Time Streaming Protocol (RTSP)H. Schulzrinne, A. Rao, R. Lanphier · obsoleted by RFC 7826 | Proposed Standard | April 1998 |
| 2974 | Session Announcement ProtocolM. Handley, C. Perkins, E. Whelan | Experimental | October 2000 |
| 3264 | An Offer/Answer Model with Session Description Protocol (SDP)J. Rosenberg, H. Schulzrinne | Proposed Standard | July 2002 |
| 3550 | RTP: A Transport Protocol for Real-Time ApplicationsH. Schulzrinne, S. Casner, R. Frederick, V. Jacobson | Internet Standard | July 2003 |
| 3551 | RTP Profile for Audio and Video Conferences with Minimal ControlH. Schulzrinne, S. Casner | 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 |
| 3839 | MIME Type Registrations for 3rd Generation Partnership Project (3GPP) Multimedia filesR. Castagno, D. Singer | Proposed Standard | July 2004 |
| 4288 | Media Type Specifications and Registration ProceduresN. Freed, J. Klensin · obsoleted by RFC 6838 | Best Current Practice | December 2005 |
| 4301 | Security Architecture for the Internet ProtocolS. Kent, K. Seo | Proposed Standard | December 2005 |
| 4337 | MIME Type Registration for MPEG-4Y. Lim, D. Singer | Proposed Standard | March 2006 |
| 4566 | SDP: Session Description ProtocolM. Handley, V. Jacobson, C. Perkins · obsoleted by RFC 8866 | Proposed Standard | July 2006 |
| 4855 | Media Type Registration of RTP Payload FormatsS. Casner | Proposed Standard | February 2007 |
| 5109 | RTP Payload Format for Generic Forward Error CorrectionA. Li, Ed. | Proposed Standard | December 2007 |
| 5234 | Augmented BNF for Syntax Specifications: ABNFD. Crocker, Ed., P. Overell | Internet Standard | January 2008 |
| 5246 | The Transport Layer Security (TLS) Protocol Version 1.2T. Dierks, E. Rescorla · obsoleted by RFC 8446, RFC 9846 | Proposed Standard | August 2008 |
| 5405 | Unicast UDP Usage Guidelines for Application DesignersL. Eggert, G. Fairhurst · obsoleted by RFC 8085 | Best Current Practice | November 2008 |