Claim record · SIP transactions dialogs and call setup
A request repeated with the same branch identifier and the same sequence number is the same transaction retransmitting rather than a new request except in the 2 cases where the protocol reuses both by design.
inference · verified 2026-09-15
- Vendor
- IETF
- Product
- Session Initiation Protocol
- Subsystem
- transactions
- Deployment
- not restricted
- Region
- not restricted
- Release range
- current as of 2026-09-15
- Status
- inference
- Confidence
- 0.60
- Verified
- 2026-09-15
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · RFC 3261 sections 8.1.1.5 8.1.1.7 and 17.1.1.2
Cite this claim
APA
WarmTransfer. (2026, September 15). SIP transactions dialogs and call setup: claim siptx-repeat-on-the-same-branch-is-a-retransmission. WarmTransfer. https://warmtransfer.net/knowledge/claims/siptx-repeat-on-the-same-branch-is-a-retransmission
BibTeX
@misc{warmtransfer-claim-siptx-repeat-on-the-same-branch-is-a-retransmission,
title = {SIP transactions dialogs and call setup: claim siptx-repeat-on-the-same-branch-is-a-retransmission},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/siptx-repeat-on-the-same-branch-is-a-retransmission},
note = {Claim siptx-repeat-on-the-same-branch-is-a-retransmission, verified 2026-09-15}
}