Claim record · SIP transactions dialogs and call setup
The acknowledgement of a 2xx response to an INVITE is a separate transaction from the INVITE it acknowledges.
fact · verified 2026-09-15
ACK for a 2xx response to an INVITE request is a separate transaction.
- Vendor
- IETF
- Product
- Session Initiation Protocol
- Subsystem
- transactions
- Deployment
- not restricted
- Region
- not restricted
- Release range
- current as of 2026-09-15
- Status
- fact
- Confidence
- 0.90
- Verified
- 2026-09-15
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · RFC 3261 section 6 terminology and section 13
Cite this claim
APA
WarmTransfer. (2026, September 15). SIP transactions dialogs and call setup: claim siptx-ack-for-2xx-is-its-own-transaction. WarmTransfer. https://warmtransfer.net/knowledge/claims/siptx-ack-for-2xx-is-its-own-transaction
BibTeX
@misc{warmtransfer-claim-siptx-ack-for-2xx-is-its-own-transaction,
title = {SIP transactions dialogs and call setup: claim siptx-ack-for-2xx-is-its-own-transaction},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/siptx-ack-for-2xx-is-its-own-transaction},
note = {Claim siptx-ack-for-2xx-is-its-own-transaction, verified 2026-09-15}
}