Source note · Troubleshooting SIP 403 Forbidden from a carrier
RFC 8197 defines 607 Unwanted so that a called party can indicate that a call or message was unwanted, signalling that the caller's identity rather than the callee's availability caused the rejection.
Checked 2026-09-30
- Vendor
- IETF
- Product
- SIP
- Subsystem
- response codes
- Deployment
- any
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- RFC 8197: A SIP Response Code for Unwanted Calls — IETF / RFC Editor · tier 1 standards and regulators · abstract; section 3; section 4
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-rfc8197-607. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-rfc8197-607
BibTeX
@misc{warmtransfer-claim-sip-403-forbidden-troubleshooting-rfc8197-607,
title = {Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-rfc8197-607},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-rfc8197-607},
note = {Source note sip-403-forbidden-troubleshooting-rfc8197-607, checked 2026-09-30}
}