RFC 8197 defines SIP 607 (Unwanted) as a response from the called party's user agent indicating that the offered communication is unwanted because of the caller's identity.

Checked 2026-09-24

Vendor
IETF
Product
SIP
Subsystem
response-codes
Deployment
any
Region
not restricted
Release range
RFC 8197
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Call blocking and analytics labeling remediation: source note call-blocking-labeling-rfc8197-607. WarmTransfer. https://warmtransfer.net/knowledge/claims/call-blocking-labeling-rfc8197-607

BibTeX

@misc{warmtransfer-claim-call-blocking-labeling-rfc8197-607,
  title  = {Call blocking and analytics labeling remediation: source note call-blocking-labeling-rfc8197-607},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/call-blocking-labeling-rfc8197-607},
  note   = {Source note call-blocking-labeling-rfc8197-607, checked 2026-09-24}
}

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