Source note · Troubleshooting SIP 403 Forbidden from a carrier
RFC 8588 describes the attest and origid claims as carrying additional information from the signer to the consumer of the PASSporT, and it specifies no SIP response code or call rejection behaviour tied to attestation level.
Checked 2026-09-30
- Vendor
- IETF
- Product
- SHAKEN PASSporT
- Subsystem
- PASSporT shaken extension
- Deployment
- any
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- RFC 8588: Personal Assertion Token (PaSSporT) Extension for Signature-based Handling of Asserted information using toKENs (SHAKEN) — IETF / RFC Editor · tier 1 standards and regulators · section 9
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-rfc8588-info-only. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-rfc8588-info-only
BibTeX
@misc{warmtransfer-claim-sip-403-forbidden-troubleshooting-rfc8588-info-only,
title = {Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-rfc8588-info-only},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-rfc8588-info-only},
note = {Source note sip-403-forbidden-troubleshooting-rfc8588-info-only, checked 2026-09-30}
}