SIP 300 Multiple Choices vs 607 Unwanted
SIP 300 (Multiple Choices) is a 3xx Redirection response, while 607 (Unwanted) is a 6xx Global Failure response. 300 indicates that the address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint. In contrast, 607 means that the called party did not want this call from the calling party. This response is used for robocall and spam call blocking.
Description
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
Quand vous le voyez
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Comment résoudre
Select one of the provided Contact addresses and resend the request to that specific URI.
Description
The called party did not want this call from the calling party. This response is used for robocall and spam call blocking.
Quand vous le voyez
When the callee's system identifies the call as spam or unwanted. Used in STIR/SHAKEN call verification frameworks.
Comment résoudre
If you are a legitimate caller being blocked as spam, ensure your STIR/SHAKEN attestation level is 'A' (full attestation). Contact the callee through alternative means.
Différences clés
300 is a 3xx Redirection response, while 607 is a 6xx Global Failure response.
SIP 300: The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
SIP 607: The called party did not want this call from the calling party. This response is used for robocall and spam call blocking.
You encounter 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
You encounter 607 when when the callee's system identifies the call as spam or unwanted. Used in STIR/SHAKEN call verification frameworks.
Quand utiliser lequel
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 607 (Unwanted): If you are a legitimate caller being blocked as spam, ensure your STIR/SHAKEN attestation level is 'A' (full attestation). Contact the callee through alternative means.