SIP 300 Multiple Choices vs 301 Moved Permanently
Both SIP 300 (Multiple Choices) and 301 (Moved Permanently) belong to the 3xx Redirection category. 300 indicates that the address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint. Meanwhile, 301 means 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.
설명
The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
이 코드를 보게 되는 경우
When a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
해결 방법
Select one of the provided Contact addresses and resend the request to that specific URI.
설명
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.
이 코드를 보게 되는 경우
When a user has permanently changed their SIP address. All future calls should be directed to the new URI.
해결 방법
Update your address book or routing tables to use the new Contact URI provided in the response.
주요 차이점
SIP 300: The address in the request resolved to several choices, each with its own location. The user or UA can select a preferred communication endpoint.
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.
You encounter 300 when when a user has multiple registered devices or contact addresses and the server cannot determine which one to use.
You encounter 301 when when a user has permanently changed their SIP address. All future calls should be directed to the new URI.
언제 어떤 것을 사용할지
For 300 (Multiple Choices): Select one of the provided Contact addresses and resend the request to that specific URI. For 301 (Moved Permanently): Update your address book or routing tables to use the new Contact URI provided in the response.