SIP 202 Accepted vs 407 Proxy Authentication Required
SIP 202 (Accepted) is a 2xx Success response, while 407 (Proxy Authentication Required) is a 4xx Client 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, 407 means that the client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
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 client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
Quand vous le voyez
When a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
Comment résoudre
Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.
Différences clés
202 is a 2xx Success response, while 407 is a 4xx Client Failure response.
SIP 202: The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
SIP 407: The client must first authenticate with the proxy. The proxy returns a Proxy-Authenticate header with a challenge.
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 407 when when a SIP proxy requires authentication before forwarding the request. Similar to 401 but for proxy servers.
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 407 (Proxy Authentication Required): Resend the request with a Proxy-Authorization header containing valid credentials for the proxy.