Source note · Hold resume and conference signaling

RFC 3261 says a UAC MUST NOT start a new INVITE (such as a hold or resume re-INVITE) while another INVITE transaction is in progress in the same dialog.

Checked 2026-09-24

Vendor: IETF
Product: SIP
Subsystem: re-INVITE
Deployment: any
Region: not restricted
Release range: RFC 3261 as published
Checked: 2026-09-24

Sources

RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · Section 14.1 UAC Behavior

Cite this note

APA

WarmTransfer. (2026, September 24). Hold resume and conference signaling: source note hold-resume-conference-3261-no-overlapping-invite. WarmTransfer. https://warmtransfer.net/knowledge/claims/hold-resume-conference-3261-no-overlapping-invite

BibTeX

@misc{warmtransfer-claim-hold-resume-conference-3261-no-overlapping-invite,
  title  = {Hold resume and conference signaling: source note hold-resume-conference-3261-no-overlapping-invite},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/hold-resume-conference-3261-no-overlapping-invite},
  note   = {Source note hold-resume-conference-3261-no-overlapping-invite, checked 2026-09-24}
}

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