SIP 200 OK vs 406 Not Acceptable
SIP 200 (OK) is a 2xx Success response, while 406 (Not Acceptable) is a 4xx Client Failure response. 200 indicates that the request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully. In contrast, 406 means that the resource identified by the request is only capable of generating responses with content characteristics not acceptable according to the Accept header.
描述
The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
何时出现
When a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
如何修复
No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions.
描述
The resource identified by the request is only capable of generating responses with content characteristics not acceptable according to the Accept header.
何时出现
When content negotiation fails — the server cannot produce a response matching the Accept header fields in the request.
如何修复
Review the Accept headers in your request and broaden the acceptable content types.
主要区别
200 is a 2xx Success response, while 406 is a 4xx Client Failure response.
SIP 200: The request has succeeded. For INVITE, the call has been answered. For other methods, the action has been completed successfully.
SIP 406: The resource identified by the request is only capable of generating responses with content characteristics not acceptable according to the Accept header.
You encounter 200 when when a call is answered (INVITE 200 OK), a registration succeeds (REGISTER 200 OK), or a subscription is accepted (SUBSCRIBE 200 OK).
You encounter 406 when when content negotiation fails — the server cannot produce a response matching the Accept header fields in the request.
何时使用哪个
For 200 (OK): No fix needed — this is a success response. The caller should send an ACK to complete the three-way handshake for INVITE transactions. For 406 (Not Acceptable): Review the Accept headers in your request and broaden the acceptable content types.