SIP 202 Accepted vs 607 Unwanted
SIP 202 (Accepted) is a 2xx Success response, while 607 (Unwanted) is a 6xx Global Failure response. 202 indicates that the request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests. 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.
Descripción
The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
Cuándo lo verás
After sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
Cómo solucionarlo
Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.
Descripción
The called party did not want this call from the calling party. This response is used for robocall and spam call blocking.
Cuándo lo verás
When the callee's system identifies the call as spam or unwanted. Used in STIR/SHAKEN call verification frameworks.
Cómo solucionarlo
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.
Diferencias clave
202 is a 2xx Success response, while 607 is a 6xx Global Failure response.
SIP 202: The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
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 202 when after sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
You encounter 607 when when the callee's system identifies the call as spam or unwanted. Used in STIR/SHAKEN call verification frameworks.
Cuándo usar cada uno
For 202 (Accepted): Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity. 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.