SIP 181 Call Is Being Forwarded vs 410 Gone
SIP 181 (Call Is Being Forwarded) is a 1xx Provisional response, while 410 (Gone) is a 4xx Client Failure response. 181 indicates that a proxy server may send this to indicate that the call is being forwarded to a different set of destinations. In contrast, 410 means that the requested resource is no longer available at the server and no forwarding address is known. This is expected to be a permanent condition.
描述
A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
何时出现
When the callee has call forwarding enabled and the request is being redirected to another number or device.
如何修复
No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings.
描述
The requested resource is no longer available at the server and no forwarding address is known. This is expected to be a permanent condition.
何时出现
When a user account has been permanently deactivated or removed from the server with no forwarding information.
如何修复
The user is permanently gone. Remove this URI from your contacts. Unlike 404, the server knows the user once existed here.
主要区别
181 is a 1xx Provisional response, while 410 is a 4xx Client Failure response.
SIP 181: A proxy server may send this to indicate that the call is being forwarded to a different set of destinations.
SIP 410: The requested resource is no longer available at the server and no forwarding address is known. This is expected to be a permanent condition.
You encounter 181 when when the callee has call forwarding enabled and the request is being redirected to another number or device.
You encounter 410 when when a user account has been permanently deactivated or removed from the server with no forwarding information.
何时使用哪个
For 181 (Call Is Being Forwarded): No action needed. The call is being redirected. If forwarding is unintended, the callee should update their forwarding settings. For 410 (Gone): The user is permanently gone. Remove this URI from your contacts. Unlike 404, the server knows the user once existed here.