Source note · SIP early offer and delayed offer
A UAS that receives an INVITE without an offer must generate an offer in a reliable response.
Checked 2026-09-25
- Vendor
- IETF
- Product
- SIP
- Subsystem
- offer-answer
- Deployment
- any
- Region
- not restricted
- Release range
- RFC 3261
- Checked
- 2026-09-25
Sources
- RFC 3261 — SIP: Session Initiation Protocol — IETF / RFC Editor · tier 1 standards and regulators · Section 13.3.1 Processing of the INVITE
Cite this note
APA
WarmTransfer. (2026, September 25). SIP early offer and delayed offer: source note sip-early-delayed-offer-rfc3261-uas-must-offer. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-early-delayed-offer-rfc3261-uas-must-offer
BibTeX
@misc{warmtransfer-claim-sip-early-delayed-offer-rfc3261-uas-must-offer,
title = {SIP early offer and delayed offer: source note sip-early-delayed-offer-rfc3261-uas-must-offer},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-early-delayed-offer-rfc3261-uas-must-offer},
note = {Source note sip-early-delayed-offer-rfc3261-uas-must-offer, checked 2026-09-25}
}