SIP 301 Moved Permanently vs 505 Version Not Supported
SIP 301 (Moved Permanently) is a 3xx Redirection response, while 505 (Version Not Supported) is a 5xx Server 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, 505 means that the server does not support the SIP protocol version that was used in the request. Currently only SIP/2.0 is standardized.
Описание
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.
Когда вы это видите
When a user has permanently changed their SIP address. All future calls should be directed to the new URI.
Как исправить
Update your address book or routing tables to use the new Contact URI provided in the response.
Описание
The server does not support the SIP protocol version that was used in the request. Currently only SIP/2.0 is standardized.
Когда вы это видите
Extremely rare. Would occur if a client sends a request with a SIP version other than 2.0.
Как исправить
Ensure your UA uses SIP/2.0 in the request line. This is the only standardized version.
Ключевые различия
301 is a 3xx Redirection response, while 505 is a 5xx Server 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 505: The server does not support the SIP protocol version that was used in the request. Currently only SIP/2.0 is standardized.
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 505 when extremely rare. Would occur if a client sends a request with a SIP version other than 2.0.
Когда что использовать
For 301 (Moved Permanently): Update your address book or routing tables to use the new Contact URI provided in the response. For 505 (Version Not Supported): Ensure your UA uses SIP/2.0 in the request line. This is the only standardized version.