SIP 301 Moved Permanently vs 403 Forbidden
SIP 301 (Moved Permanently) is a 3xx Redirection response, while 403 (Forbidden) 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, 403 means that the server understood the request but is refusing to fulfill it. Authorization will not help. The request should not be repeated.
Mô tả
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.
Khi bạn thấy mã này
When a user has permanently changed their SIP address. All future calls should be directed to the new URI.
Cách khắc phục
Update your address book or routing tables to use the new Contact URI provided in the response.
Mô tả
The server understood the request but is refusing to fulfill it. Authorization will not help. The request should not be repeated.
Khi bạn thấy mã này
When the server policy denies the request regardless of credentials. Common for blocked numbers, restricted routes, or ACL violations.
Cách khắc phục
Check server ACLs and routing policies. Verify the caller is permitted to make this type of call. Contact the server administrator if the block is unexpected.
Sự khác biệt chính
301 is a 3xx Redirection response, while 403 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 403: The server understood the request but is refusing to fulfill it. Authorization will not help. The request should not be repeated.
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 403 when when the server policy denies the request regardless of credentials. Common for blocked numbers, restricted routes, or ACL violations.
Khi nào dùng cái nào
For 301 (Moved Permanently): Update your address book or routing tables to use the new Contact URI provided in the response. For 403 (Forbidden): Check server ACLs and routing policies. Verify the caller is permitted to make this type of call. Contact the server administrator if the block is unexpected.