SIP 302 Moved Temporarily vs 501 Not Implemented
SIP 302 (Moved Temporarily) is a 3xx Redirection response, while 501 (Not Implemented) is a 5xx Server 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, 501 means that the server does not support the functionality required to fulfill the request. The method is recognized but not implemented.
描述
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.
何时出现
When a user is temporarily reachable at a different location, such as when traveling or using a different device.
如何修复
Redirect the current call to the Contact URI provided, but keep the original URI for future requests.
描述
The server does not support the functionality required to fulfill the request. The method is recognized but not implemented.
何时出现
When the SIP method is valid but the server has not implemented it (e.g., INFO, UPDATE, PRACK on a basic server).
如何修复
Use a different method that the server supports. Check the Allow header in responses to see supported methods.
主要区别
302 is a 3xx Redirection response, while 501 is a 5xx Server 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 501: The server does not support the functionality required to fulfill the request. The method is recognized but not implemented.
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 501 when when the SIP method is valid but the server has not implemented it (e.g., INFO, UPDATE, PRACK on a basic server).
何时使用哪个
For 302 (Moved Temporarily): Redirect the current call to the Contact URI provided, but keep the original URI for future requests. For 501 (Not Implemented): Use a different method that the server supports. Check the Allow header in responses to see supported methods.