SIP 202 Accepted vs 302 Moved Temporarily
SIP 202 (Accepted) is a 2xx Success response, while 302 (Moved Temporarily) 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, 302 means that the callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests.
Описание
The request has been accepted for processing but the processing has not been completed. Used primarily for REFER requests.
Когда вы это видите
After sending a REFER request for call transfer. The transfer target acknowledges receipt but hasn't completed the transfer yet.
Как исправить
Wait for a NOTIFY to learn the outcome of the referred action. If no NOTIFY arrives, check subscription state and network connectivity.
Описание
The callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests.
Когда вы это видите
When a user is temporarily reachable at a different location, such as when traveling or using a different device.
Как исправить
Redirect the current call to the Contact URI provided, but keep the original URI for future requests.
Ключевые различия
202 is a 2xx Success response, while 302 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 302: The callee has temporarily moved to a different address. The client should retry the request at the Contact address but continue using the original URI for future requests.
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 302 when when a user is temporarily reachable at a different location, such as when traveling or using a different device.
Когда что использовать
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 302 (Moved Temporarily): Redirect the current call to the Contact URI provided, but keep the original URI for future requests.