Source note · Branded calling and CNAM delivery
Under RFC 9795 the authentication service takes nam from the SIP From display-name by default; if the nam it generates differs from that display-name it must use the full PASSporT form rather than the compact form.
Checked 2026-09-24
- Vendor
- IETF
- Product
- STIR PASSporT
- Subsystem
- authentication-service
- Deployment
- carrier-network
- Region
- not restricted
- Release range
- RFC 9795
- Checked
- 2026-09-24
Sources
- RFC 9795: Personal Assertion Token (PASSporT) Extension for Rich Call Data — IETF / RFC Editor · tier 1 standards and regulators · Section 12.1 (authentication service behaviour)
Cite this note
APA
WarmTransfer. (2026, September 24). Branded calling and CNAM delivery: source note branded-calling-cnam-nam-from-display-name. WarmTransfer. https://warmtransfer.net/knowledge/claims/branded-calling-cnam-nam-from-display-name
BibTeX
@misc{warmtransfer-claim-branded-calling-cnam-nam-from-display-name,
title = {Branded calling and CNAM delivery: source note branded-calling-cnam-nam-from-display-name},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/branded-calling-cnam-nam-from-display-name},
note = {Source note branded-calling-cnam-nam-from-display-name, checked 2026-09-24}
}