SIP 301 Moved Permanently vs 493 Undecipherable
SIP 301 (Moved Permanently) is a 3xx Redirection response, while 493 (Undecipherable) 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, 493 means that the request body was encrypted with S/MIME but the server cannot decrypt it. The server may lack the necessary key or certificate.
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 body was encrypted with S/MIME but the server cannot decrypt it. The server may lack the necessary key or certificate.
このコードが表示される場合
When using S/MIME encryption for SIP message bodies and the recipient does not have the corresponding decryption key.
解決方法
Ensure the recipient has the correct S/MIME certificate and private key. Consider using TLS for transport-layer encryption instead.
主な違い
301 is a 3xx Redirection response, while 493 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 493: The request body was encrypted with S/MIME but the server cannot decrypt it. The server may lack the necessary key or certificate.
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 493 when when using S/MIME encryption for SIP message bodies and the recipient does not have the corresponding decryption key.
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 493 (Undecipherable): Ensure the recipient has the correct S/MIME certificate and private key. Consider using TLS for transport-layer encryption instead.