RFC3262: Reliability of Provisional Responses in Session Initiation Protocol (SIP)
Network Working Group J. Rosenberg Request for Comments: 3262 dynamicsoft Category: Standards Track H. Schulzrinne Columbia U. ...
RFC2774: An HTTP Extension Framework
Network Working Group H. Nielsen Request for Comments: 2774 P. Leach Category: Experimental Microsoft S. Lawrenc...
RFC3515: The Session Initiation Protocol (SIP) Refer Method
Network Working Group R. Sparks Request for Comments: 3515 dynamicsoft Category: Standards Track April 2003 The Session Initiation Protocol (SIP) Refer Method Status of ...
RFC4229: HTTP Header Field Registrations
Network Working Group M. Nottingham Request for Comments: 4229 J. Mogul Category: Informational HP Labs December 2005 ...
RFC3865: A No Soliciting Simple Mail Transfer Protocol (SMTP) Service Extension
Network Working Group C. Malamud Request for Comments: 3865 Memory Palace Press Category: Standards Track September 2004 A No Soliciting Simple Mail Transfer Protocol (SMTP) ...
RFC3968: The Internet Assigned Number Authority (IANA) Header Field Parameter Registry for the Session Initiation Protocol (SIP)
Network Working Group G. Camarillo Request for Comments: 3968 Ericsson Updates: 3427 December 2004 BCP: 98 Category: Best Current Practice The Internet Assigne...
RFC3886: An Extensible Message Format for Message Tracking Responses
Network Working Group E. Allman Request for Comments: 3886 Sendmail, Inc. Updates: 3463 September 2004 Category: Standards Track An Extensible Message Format for Message ...
RFC4021: Registration of Mail and MIME Header Fields
Network Working Group G. Klyne Request for Comments: 4021 University of Oxford Category: Standards Track J. Palme Stockholm University/KT ...
RFC4028: Session Timers in the Session Initiation Protocol (SIP)
Network Working Group S. Donovan Request for Comments: 4028 J. Rosenberg Category: Standards Track Cisco Systems April 2005 ...
RFC4249: Implementer-Friendly Specification of Message and MIME-Part Header Fields and Field Components
Network Working Group B. Lilly Request for Comments: 4249 January 2006 Category: Informational Implementer-Friendly Specification of Message and MIME-Part Header Fields and Field Components S...
RFC4412: Communications Resource Priority for the Session Initiation Protocol (SIP)
Network Working Group H. Schulzrinne Request for Comments: 4412 Columbia U. Category: Standards Track J. Polk Cisco Systems ...
RFC4457: The Session Initiation Protocol (SIP) P-User-Database Private-Header (P-Header)
Network Working Group G. Camarillo Request for Comments: 4457 G. Blanco Category: Informational Ericsson April 2006 ...
RFC5064: The Archived-At Message Header Field
Network Working Group M. Duerst Request for Comments: 5064 Aoyama Gakuin University Category: Standards Track December 2007 The Archived-At Message Header Field Status of This Me...
RFC5504: Downgrading Mechanism for Email Address Internationalization
Network Working Group K. Fujiwara, Ed. Request for Comments: 5504 Y. Yoneya, Ed. Category: Experimental JPRS March 2009 ...
RFC5536: Netnews Article Format
Network Working Group K. Murchison, Ed. Request for Comments: 5536 Carnegie Mellon University Obsoletes: 1036 C. Lindsey Category: Standards Track University of Manchester ...
RFC5651: Layered Coding Transport (LCT) Building Block
Network Working Group M. Luby Request for Comments: 5651 M. Watson Obsoletes: 3451 L. Vicisano Category: Standards Track Qualcomm, Inc. ...
RFC0680: Message Transmission Protocol
Network Working Group T. Myer Request for Comment: 680 D. Henderson NIC: 32116 BBN-TENEX April 30, 1975 ...
RFC5825: Displaying Downgraded Messages for Email Address Internationalization
Internet Engineering Task Force (IETF) K. Fujiwara Request for Comments: 5825 JPRS Category: Experimental B. Leiba ISSN: 2070-1721 Huawei Technologies ...
RFC6477: Registration of Military Message Handling System (MMHS) Header Fields for Use in Internet Mail
Internet Engineering Task Force (IETF) A. Melnikov Request for Comments: 6477 Isode Ltd Category: Informational G. Lunt ISSN: 2070-1721 SMHS Ltd ...
RFC6857: Post-Delivery Message Downgrading for Internationalized Email Messages
Internet Engineering Task Force (IETF) K. Fujiwara Request for Comments: 6857 JPRS Category: Standards Track March 2013 ISSN: 2070-1721 Post-Delivery Message Downgrading for Internationalized ...