SIP 302 Moved Temporarily vs 430 Flow Failed
SIP 302 (Moved Temporarily) is a 3xx Redirection response, while 430 (Flow Failed) is a 4xx Client Failure response. 302 indicates 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. In contrast, 430 means that the specific flow to a user agent has failed but other flows may succeed. Used with SIP outbound (RFC 5626).
説明
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.
このコードが表示される場合
When a user is temporarily reachable at a different location, such as when traveling or using a different device.
解決方法
Redirect the current call to the Contact URI provided, but keep the original URI for future requests.
説明
The specific flow to a user agent has failed but other flows may succeed. Used with SIP outbound (RFC 5626).
このコードが表示される場合
When using SIP outbound connections and the specific TCP/TLS connection (flow) to the UA has been lost.
解決方法
The proxy should attempt delivery via other registered flows. The UA should re-register to establish a new flow.
主な違い
302 is a 3xx Redirection response, while 430 is a 4xx Client Failure response.
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.
SIP 430: The specific flow to a user agent has failed but other flows may succeed. Used with SIP outbound (RFC 5626).
You encounter 302 when when a user is temporarily reachable at a different location, such as when traveling or using a different device.
You encounter 430 when when using SIP outbound connections and the specific TCP/TLS connection (flow) to the UA has been lost.
どちらをいつ使うか
For 302 (Moved Temporarily): Redirect the current call to the Contact URI provided, but keep the original URI for future requests. For 430 (Flow Failed): The proxy should attempt delivery via other registered flows. The UA should re-register to establish a new flow.