SIP 202 Accepted vs 300 Multiple Choices
SIP 202 (Accepted) is a 2xx Success response, while 300 (Multiple Choices) is a 3xx Redirection 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, 300 means 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.
Description
The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
Quand vous le voyez
After sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
Comment résoudre
Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.
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.
Différences clés
202 is a 2xx Success response, while 300 is a 3xx Redirection response.
SIP 202: The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
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.
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 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
Quand utiliser lequel
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 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI.