Session Initiation Protocol (SIP) Call Control - Conferencing for User Agents

Publisher

IETF / RFC Editor

URL

https://www.rfc-editor.org/rfc/rfc4579.html

Published

2006-08-01

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 4579 was published August 2006 as Best Current Practice BCP 119. in context
• RFC 4579 defines a conference factory URI such that a successful call to it automatically creates a new conference and its focus. in context
• RFC 4579 says a conference focus MUST include the isfocus feature parameter in its Contact header unless it wishes to hide that it is a focus. in context
• RFC 4579 moves a point-to-point call into a conference by putting an escaped Replaces header in the Refer-To URI so that the focus's INVITE replaces the original dialog at the other party. in context
• RFC 4579 removes a participant by sending the conference URI a REFER whose Refer-To names the participant with method set to BYE. in context
• RFC 4579 says a focus that receives a REFER whose Refer-To is a SIP URI SHOULD send an INVITE to that new participant. in context
• RFC 4579 says a UA wishing to add a participant SHOULD send that participant a REFER whose Refer-To contains the conference URI. in context
• RFC 4579 says a conference-aware UA SHOULD subscribe to the conference event package when the remote target URI of its dialog carries isfocus. in context

Cite this source record

APA

WarmTransfer. (2006, August 1). Session Initiation Protocol (SIP) Call Control - Conferencing for User Agents. WarmTransfer. https://warmtransfer.net/knowledge/sources/rfc-4579-conferencing-for-uas

BibTeX

@misc{warmtransfer-rfc-4579-conferencing-for-uas,
  title  = {Session Initiation Protocol (SIP) Call Control - Conferencing for User Agents},
  author = {{WarmTransfer}},
  year   = {2006},
  url    = {https://warmtransfer.net/knowledge/sources/rfc-4579-conferencing-for-uas},
  note   = {IETF / RFC Editor, accessed 2026-09-24}
}