The Session Initiation Protocol (SIP) "Join" Header

Publisher

IETF / RFC Editor

URL

https://www.rfc-editor.org/rfc/rfc3911.html

Published

2004-10-01

Updated

unknown

Accessed

2026-09-24

HTTP status

200

License

IETF Trust Legal Provisions (BCP 78); RFC text may be reproduced under IETF Trust terms; excerpts and locators only in corpus

Source notes citing this source

• RFC 3911 says a UAS that finds no dialog matching the Join header rejects the INVITE with 481 Call/Transaction Does Not Exist. in context
• RFC 3911 defines the option tag join and says UAs that support the Join header MUST include it in a Supported header field. in context
• RFC 3911 says a request carrying both Join and a header with contradictory semantics such as Replaces MUST be rejected with 400 Bad Request. in context
• RFC 3911 says a UAS with enough resources to handle a Join request locally SHOULD accept it and perform the media mixing or combining. in context

Cite this source record

APA

WarmTransfer. (2004, October 1). The Session Initiation Protocol (SIP) "Join" Header. WarmTransfer. https://warmtransfer.net/knowledge/sources/rfc-3911-join

BibTeX

@misc{warmtransfer-rfc-3911-join,
  title  = {The Session Initiation Protocol (SIP) "Join" Header},
  author = {{WarmTransfer}},
  year   = {2004},
  url    = {https://warmtransfer.net/knowledge/sources/rfc-3911-join},
  note   = {IETF / RFC Editor, accessed 2026-09-24}
}