| 822 | STANDARD FOR THE FORMAT OF ARPA INTERNET TEXT MESSAGESD. Crocker · obsoleted by RFC 2822 | Internet Standard | August 1982 |
| 1633 | Integrated Services in the Internet Architecture: an OverviewR. Braden, D. Clark, S. Shenker | Informational | June 1994 |
| 2156 | MIXER (Mime Internet X.400 Enhanced Relay): Mapping between X.400 and RFC 822/MIMES. Kille | Proposed Standard | January 1998 |
| 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 |
| 2205 | Resource ReSerVation Protocol (RSVP) -- Version 1 Functional SpecificationR. Braden, Ed., L. Zhang, S. Berson, S. Herzog, S. Jamin | Proposed Standard | September 1997 |
| 2211 | Specification of the Controlled-Load Network Element ServiceJ. Wroclawski | Proposed Standard | September 1997 |
| 2212 | Specification of Guaranteed Quality of ServiceS. Shenker, C. Partridge, R. Guerin | Proposed Standard | September 1997 |
| 2474 | Definition of the Differentiated Services Field (DS Field) in the IPv4 and IPv6 HeadersK. Nichols, S. Blake, F. Baker, D. Black | Proposed Standard | December 1998 |
| 2475 | An Architecture for Differentiated ServicesS. Blake, D. Black, M. Carlson, E. Davies, Z. Wang, W. Weiss | Informational | December 1998 |
| 2597 | Assured Forwarding PHB GroupJ. Heinanen, F. Baker, W. Weiss, J. Wroclawski | Proposed Standard | June 1999 |
| 2733 | An RTP Payload Format for Generic Forward Error CorrectionJ. Rosenberg, H. Schulzrinne · obsoleted by RFC 5109 | Proposed Standard | December 1999 |
| 2871 | A Framework for Telephony Routing over IPJ. Rosenberg, H. Schulzrinne | Informational | June 2000 |
| 2885 | Megaco Protocol version 0.8F. Cuervo, N. Greene, C. Huitema, A. Rayhan, B. Rosen, J. Segers · obsoleted by RFC 3015 | Historic | August 2000 |
| 2886 | Megaco ErrataT. Taylor · obsoleted by RFC 3015 | Historic | August 2000 |
| 3175 | Aggregation of RSVP for IPv4 and IPv6 ReservationsF. Baker, C. Iturralde, F. Le Faucheur, B. Davie | Proposed Standard | September 2001 |
| 3219 | Telephony Routing over IP (TRIP)J. Rosenberg, H. Salama, M. Squire | Proposed Standard | January 2002 |
| 3221 | Commentary on Inter-Domain Routing in the InternetG. Huston | Informational | December 2001 |
| 3246 | An Expedited Forwarding PHB (Per-Hop Behavior)B. Davie, A. Charny, J.C.R. Bennet, K. Benson, J.Y. Le Boudec, W. Courtney, S. Davari, V. Firoiu, D. Stiliadis | Proposed Standard | March 2002 |
| 3261 | SIP: Session Initiation ProtocolJ. Rosenberg, H. Schulzrinne, G. Camarillo, A. Johnston, J. Peterson, R. Sparks, M. Handley, E. Schooler | Proposed Standard | July 2002 |
| 3270 | Multi-Protocol Label Switching (MPLS) Support of Differentiated ServicesF. Le Faucheur, Ed., L. Wu, B. Davie, S. Davari, P. Vaananen, R. Krishnan, P. Cheval, J. Heinanen | Proposed Standard | May 2002 |
| 3469 | Framework for Multi-Protocol Label Switching (MPLS)-based RecoveryV. Sharma, Ed., F. Hellstrand, Ed. | Informational | February 2003 |
| 3487 | Requirements for Resource Priority Mechanisms for the Session Initiation Protocol (SIP)H. Schulzrinne | Informational | March 2003 |
| 3523 | Internet Emergency Preparedness (IEPREP) Telephony Topology TerminologyJ. Polk | Informational | April 2003 |
| 3525 | Gateway Control Protocol Version 1C. Groves, Ed., M. Pantaleo, Ed., T. Anderson, Ed., T. Taylor, Ed. · obsoleted by RFC 5125 | Historic | June 2003 |
| 3689 | General Requirements for Emergency Telecommunication Service (ETS)K. Carlberg, R. Atkinson | Informational | February 2004 |
| 3690 | IP Telephony Requirements for Emergency Telecommunication Service (ETS)K. Carlberg, R. Atkinson | Informational | February 2004 |