What it means
The recipient has indicated they do not want this call, typically flagging it as spam or unwanted. Defined so networks can signal unwanted calls in a standard way.
SIP/2.0 607 Unwanted
Common causes
- The call was flagged or reported as spam or unwanted
- The recipient or their carrier marked calls from this number unwanted
- A poor number reputation or a low STIR/SHAKEN attestation
How to fix it
- Check the reputation of the calling number with analytics providers
- Confirm you are signing calls with a strong STIR/SHAKEN attestation
- Register the number with calling analytics and remediate any spam label
- Review whether the calling pattern looks like a robocall
See it in your own trace
Paste a full SIP or Asterisk log into the decoder and ladder tools to see exactly where this response appears in the call and what led to it. Everything runs in your browser, so your logs never leave your device.
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