SIP 301 Moved Permanently vs 485 Ambiguous
SIP 301 (Moved Permanently) is a 3xx Redirection response, while 485 (Ambiguous) is a 4xx Client Failure response. 301 indicates that the user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header. In contrast, 485 means that the Request-URI was ambiguous. The response body may contain a list of possible unambiguous addresses.
説明
The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
このコードが表示される場合
When a user has permanently changed their SIP address. All future calls should be directed to the new URI.
解決方法
Update your address book or routing tables to use the new Contact URI provided in the response.
説明
The Request-URI was ambiguous. The response body may contain a list of possible unambiguous addresses.
このコードが表示される場合
When the destination address matches multiple users and the server cannot determine which one is intended.
解決方法
Use a more specific SIP URI. Check the response body for a list of possible matches and select the correct one.
主な違い
301 is a 3xx Redirection response, while 485 is a 4xx Client Failure response.
SIP 301: The user can no longer be found at the address in the Request-URI. The client should direct future requests to the new address in the Contact header.
SIP 485: The Request-URI was ambiguous. The response body may contain a list of possible unambiguous addresses.
You encounter 301 when when a user has permanently changed their SIP address. All future calls should be directed to the new URI.
You encounter 485 when when the destination address matches multiple users and the server cannot determine which one is intended.
どちらをいつ使うか
For 301 (Moved Permanently): Update your address book or routing tables to use the new Contact URI provided in the response. For 485 (Ambiguous): Use a more specific SIP URI. Check the response body for a list of possible matches and select the correct one.