In ordinary RFC 8224 operation the originating identity signed is taken from the addr-spec of the From header, and the destination from the addr-spec of the To header.
Checked 2026-10-02
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- Identity header
- Deployment
- multi-tenant, on-premises
- Region
- not restricted
- Release range
- RFC 8224
- Checked
- 2026-10-02
Sources
- RFC 8224: Authenticated Identity Management in the Session Initiation Protocol (SIP) — IETF / RFC Editor · tier 1 standards and regulators · Sections 4 and 8 (identity extraction; PASSporT orig and dest)
Cite this note
APA
WarmTransfer. (2026, October 2). SIP identity headers: P-Asserted-Identity and Diversion and History-Info: source note sip-identity-headers-stir-from-addr-spec. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-identity-headers-stir-from-addr-spec
BibTeX
@misc{warmtransfer-claim-sip-identity-headers-stir-from-addr-spec,
title = {SIP identity headers: P-Asserted-Identity and Diversion and History-Info: source note sip-identity-headers-stir-from-addr-spec},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-identity-headers-stir-from-addr-spec},
note = {Source note sip-identity-headers-stir-from-addr-spec, checked 2026-10-02}
}