Source note · Call transfer semantics REFER and Replaces
The RFC Editor's document information pages for RFC 3891 and RFC 5589 carry neither an Updated by field nor an Obsoleted by field, where the page for RFC 3515 carries an Updated by field naming 2 documents.
Checked 2026-09-16
- Vendor
- IETF
- Product
- Session Initiation Protocol
- Subsystem
- Document status
- Deployment
- not restricted
- Region
- not restricted
- Release range
- not restricted
- Checked
- 2026-09-16
Sources
- RFC 3891: The Session Initiation Protocol (SIP) "Replaces" Header — RFC Editor document information — IETF / RFC Editor · tier 1 standards and regulators · RFC Editor information pages for RFC 3891 and RFC 5589, compared with the page for RFC 3515
Cite this note
APA
WarmTransfer. (2026, September 16). Call transfer semantics REFER and Replaces: source note xfersem-replaces-and-bcp-carry-no-updates. WarmTransfer. https://warmtransfer.net/knowledge/claims/xfersem-replaces-and-bcp-carry-no-updates
BibTeX
@misc{warmtransfer-claim-xfersem-replaces-and-bcp-carry-no-updates,
title = {Call transfer semantics REFER and Replaces: source note xfersem-replaces-and-bcp-carry-no-updates},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/xfersem-replaces-and-bcp-carry-no-updates},
note = {Source note xfersem-replaces-and-bcp-carry-no-updates, checked 2026-09-16}
}